CN103396776B - A kind of oil and water well self-generating foam unblocking agent and de-plugging process - Google Patents
A kind of oil and water well self-generating foam unblocking agent and de-plugging process Download PDFInfo
- Publication number
- CN103396776B CN103396776B CN201310294715.8A CN201310294715A CN103396776B CN 103396776 B CN103396776 B CN 103396776B CN 201310294715 A CN201310294715 A CN 201310294715A CN 103396776 B CN103396776 B CN 103396776B
- Authority
- CN
- China
- Prior art keywords
- agent
- mixture
- acid
- salt
- ratio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Cosmetics (AREA)
- Medicinal Preparation (AREA)
Abstract
A kind of oil and water well self-generating foam unblocking agent and de-plugging process, foam unblocking agent is made up of A agent prescription, B agent prescription, and wherein A agent prescription is made up of mineral acid, organic acid, quinoline quaternary ammonium salt, alkynol, salt compounded of iodine, tetrahydroglyoxaline acetate, polyoxyethylene ether sulfonic acid, trimethyl quaternary ammonium salt, clear water; Wherein B agent prescription is made up of carbonate, superoxide, fluorine surfactant, salt-free tetrahydroglyoxaline, Fe stabilizer, suds-stabilizing agent, clear water; De-plugging process is: first inject a certain amount of spearhead with cementing truck, then injects A agent with a cementing truck, and a cementing truck injects B agent, after A agent and B agent are injected and are terminated, inject displacing liquid, and then injected clear water, then closing well carries out the row of returning or directly proceeds to production; The present invention utilizes the synergy between tensio-active agent, has transfer drive and displacement of reservoir oil effect, have the effect that foam is handled up for oil well while having de-plugging effect while making the unblocking agent of injection not only have de-plugging effect to water injection well.
Description
Technical field
The present invention relates to de-plugging process, in particular to a kind of oil and water well self-generating foam unblocking agent and de-plugging process, for removing a kind of efficient blockage removing agent and de-plugging process that oilfield oil reservoir and water injection well water filling layer result in blockage because of settling, foulant, bacterial reproduction in drilling process, fracturing process, operation process, production process fluid.
Background technology
Oilfield oil reservoir and water injection well water filling layer in the process of drilling well, in the process of pressure break, the process of operation, production process in can because settling and blocking in fluid, fluid fouling and blocking, bacterial reproduction and blocking.Blocking causes the flow conductivity of oil well oil reservoir and water injection well water filling layer to decline, and causes field produces production declining, and economic benefit declines, and has a strong impact on normally carrying out of field produces.Therefore, need to inject unblocking agent to remove the blocking of settling, foulant, bacterium to oil well oil reservoir and water injection well water filling layer, recover or improve the pore throat radius of rock, the flow conductivity of oil reservoir or water filling layer is strengthened, output and water injection rate are restored or improve, thus the benefit of whole field produces is improved.
Unblocking agent conventional at present has the acid of hydrochloric acid, mud acid, micella, emulsified acid, foamed acid etc., when wherein hydrochloric acid, mud acid unblocking agent contact with oil reservoir or water filling layer stratum, speed of response is fast, the blocking that earth formation deep removes earth formation deep can not be goed deep into, and due to unblocking agent additive single, to the releasing less effective of tamper; Although wherein micella acid, emulsified acid reduce the time that acid contacts with stratum, reduce the speed of response of acid, because injected slurry volume is limited, spread area is also limited, plug removal radius does not reach requirement, although foamed acid volume increases, acid also reduces with the speed of response on stratum, but what foamed acid was all taked is on-the-spot to oil well or water injection well injection high pressure nitrogen, the supply of source of the gas has difficulties, and injection pressure is also restricted, and operating procedure is complicated, plant factor is low, and cost is high.
Summary of the invention
In order to overcome the defect of above-mentioned prior art, the object of the present invention is to provide a kind of oil and water well self-generating foam unblocking agent and de-plugging process, the deficiency of conventional unblocking agent at present can be overcome, be mainly manifested in injection pressure unrestricted, unblocking agent injected slurry volume increases considerably, the solution removing solid capacity of tamper is strengthened, the blocking of multiple tamper can be removed, plug removal radius obviously increases, plugging removal effect obviously strengthens, the foaming agent injected has certain transfer drive effect and oil displacement efficiency, and cost is low, and construction technology is simple, convenient.
For achieving the above object, technical scheme of the present invention is:
A kind of oil and water well self-generating foam unblocking agent, presses (1 ~ 2) by A agent prescription and B agent prescription: the volume ratio of (1 ~ 2) is formed,
Wherein the mass percent of A agent prescription consists of: mineral acid 0 ~ 25%, organic acid 0 ~ 10%, quinoline quaternary ammonium salt 0.1 ~ 0.5%, alkynol 0.01 ~ 0.5%, salt compounded of iodine 0.001 ~ 0.05%, tetrahydroglyoxaline acetate 0.01 ~ 0.3%, polyoxyethylene ether sulfonic acid 0.01 ~ 1.5%, alkyl methyl quaternary ammonium salt 0.01 ~ 0.5%, surplus are clear water composition;
Wherein the mass percent of B agent prescription consists of: carbonate 0.5 ~ 30%, superoxide 0.5 ~ 5%, and fluorine surfactant 0 ~ 15mg/L, salt-free tetrahydroglyoxaline 0.01 ~ 0.5%, Fe stabilizer 0.01 ~ 0.1%, suds-stabilizing agent 0.05 ~ 1%, surplus are clear water composition.
Described mineral acid comprises in mass ratio: HCL:HF: nitric acid: thionamic acid=1 ~ 25:0.5 ~ 20:0 ~ 20:0 ~ 20
Described organic acid comprises in mass ratio: formic acid: acetic acid: citric acid: succinic acid=0 ~ 10:0 ~ 10:0 ~ 10:0 ~ 10.
Described quinoline quaternary ammonium salt is one or more the mixture in the quaternary ammonium salt that synthesizes of the quaternary ammonium salt that synthesizes of the quaternary ammonium salt that synthesizes of quinoline and Benzyl Chloride or quinoline and benzyl dichloride or quinoline and dichlorobutane, and the ratio of mixture is arbitrary.
Described alkynol is one or more the mixture in propiolic alcohol or butynediol or methylbutynol or eneyne alcohol, and the ratio of mixture is arbitrary.
Described salt compounded of iodine is one or more the mixture in potassiumiodide, sodium iodide, tributyl methyl phosphonium iodide ammonium, Tetramethylammonium iodide, and the ratio of mixture is arbitrary.
Described tetrahydroglyoxaline acetate is one or more the mixture in oleic imidazolinone acetate, lauric acid imidazoline acetate, naphthenic acid imidazoline acetate, and the ratio of mixture is arbitrary.
Described polyoxyethylene ether sulfonic acid is one or more the mixture in fatty alcohol-polyoxyethylene ether sulfonic acid, alkylphenol polyoxyethylene sulfonic acid, aliphatic acid polyethenoxy ether, aliphatic amine polyoxyethylene ether, and the ratio of mixture is arbitrary.
Described alkyl methyl quaternary ammonium salt is one or more the mixture in Dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, and the ratio of mixture is arbitrary.
Described carbonate is one or more the mixture in sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, bicarbonate of ammonia, and the ratio of mixture is arbitrary.
Described superoxide is hydrogen peroxide, Sodium Persulfate, one or more the mixture in ammonium persulphate, SPC-D, and the ratio of mixture is arbitrary.
Described fluorine surfactant is N-ethyl, and one or more the mixture in N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, perfluoro octyl sulfonic acid ammonium, perfluoro octyl sulfonic acid, perfluorooctyl sulfonyl quaternary amine oxide compound, the ratio of mixture is arbitrary.
Described salt-free tetrahydroglyoxaline is one or more the mixture in salt-free oleic imidazolinone, salt-free lauric acid imidazoline, salt-free stearic acid tetrahydroglyoxaline, salt-free Viscotrol C tetrahydroglyoxaline, and the ratio of mixture is arbitrary.
Described Fe stabilizer is one or more the mixture in sodium chloroacetate, edetate, diethylenetriamine carboxylate salt, triethylene tetramine carboxylate salt, and the ratio of mixture is arbitrary.
Described suds-stabilizing agent is hydroxypropyl guar gum, Natvosol, hydroxypropylcellulose, biological polymer one or more the mixture also in virgin rubber, two octadecyl trimethyl quaternary ammonium salt, and the ratio of mixture is arbitrary.
Based on a de-plugging process for above-mentioned oil and water well self-generating foam unblocking agent, step is: be connected with a threeway mixing tank respectively by 2 cementing trucks, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first injects spearhead with cementing truck, injection rate Q
before=wellbore volume+5m
3spearhead consist of 0.1% ~ 1% OP-9, the quinoline Benzyl Chloride of 50 ~ 100mg/L, the naphthenic acid imidazoline acetate of 100 ~ 50mg/L, the propiolic alcohol of 10 ~ 30mg/L, then A agent is injected with a cementing truck, a cementing truck injects B agent, the injection of A agent and B agent must be carried out simultaneously, and the two injection discharge capacity proportional range is (1 ~ 2): (1 ~ 2), after A agent and B agent are injected and terminated, inject displacing liquid, injection rate Q
top=wellbore volume+2m
3, the glycerol consisting of 1%-5% of displacing liquid, the OP-10 of 200 ~ 500mg/L, fluorine surfactant 2 ~ 10mg/L, and then injected clear water, injection rate Q
clearlythe wellbore volume of=80%, closing well more than 4 hours, carries out the row of returning or directly proceeds to production.
Principle of the present invention is: on-the-spot by A agent prescription and B agent prescription by 2 pumps respectively according to (1 ~ 2): the volume ratio of (1 ~ 2) pumps into, mixed by threeway mixing tank, react in oil pipe, produce a large amount of bubbles, these bubbles, under the effect of tensio-active agent and suds-stabilizing agent, define stable microbubble and inject stratum.When considering to produce stable microbubble foam owing to removing when selection function treatment agent, put forth effort the oil displacement efficiency to treatment agent, corrosion mitigating effect has carried out Evaluating and screening, have selected and can form stable microbubble foam and the erosion rate that effectively can also reduce unblocking agent, there is the treatment agent system of good oil displacement efficiency.Make injection liquid volume ratio A, B agent volume increase more than 5-20 times on the one hand, expand the swept volume of unblocking agent; The microbubble produced on the other hand enters stratum, due to the capillary effect of microbubble, inhibit the speed of response of mineral acid in unblocking agent, organic acid and rock surface, make the unblocking agent entering earth formation deep still have the ability of reacting with rock surface tamper, reach the object of removing clog in deep reservoir; Simultaneously for water injection well, the stability of microbubble can play the effect of transfer drive, and the collaborative of mixed surfactant wherein makes it also have certain displacement of reservoir oil effect; The effect of handling up can be played for oil well microbubble.This unblocking agent is less than the 6g/m of standard-required to corrosion of metal speed
2h.
The invention provides a kind of slow with formation rock speed of response, can earth formation deep be goed deep into, remove unblocking agent and the de-plugging process of oilfield oil reservoir and the various tamper of water injection well water filling layer; When simultaneously by the Composition and function that considers various tensio-active agent, utilize the synergy between tensio-active agent, while making the unblocking agent of injection not only have de-plugging effect to water injection well, there is transfer drive and displacement of reservoir oil effect, there is while there is de-plugging effect for oil well the effect that foam is handled up.
Accompanying drawing explanation
De-plugging process schema when Fig. 1 is oil and water well self-generating foam unblocking agent site operation of the present invention.
Embodiment
The present invention is further illustrated below by specific embodiment.
Example 1
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 10%HCL, 2%HF, 1% acetic acid, 1% citric acid, 0.3% quinoline Benzyl Chloride quaternary ammonium salt, 0.01% potassiumiodide, 0.2% propiolic alcohol, and 0.1% naphthenic acid imidazoline acetate, 0.5% fatty alcohol-polyoxyethylene ether sulfonic acid, 0.05% Dodecyl trimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 5% bicarbonate of ammonia, 1% salt of wormwood, 1.3% hydrogen peroxide, 0.02% Sodium Persulfate, 0.05% salt-free oleic imidazolinone, 5mg/L perfluoro octyl sulfonic acid, 0.05% Mono Chloro Acetic Acid, 0.02% hydroxypropylcellulose, all the other are clear water.
A and B mixes according to 1:1, and reference standard SY/T5405 measures its erosion rate, is all less than 4.12g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,50mg/L of 0.1% of spearhead, the naphthenic acid imidazoline acetate of 50mg/L, the propiolic alcohol of 10mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are respectively injected 7.5m3 according to the ratio of 1:1 respectively, and then inject displacing liquid, displacing liquid consist of 1% glycerol, the OP-10 of 200mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well directly proceeded to production after 6 hours.
Field conduct effect: compare with before measure, injection pressure decline 1.4 ~ 3.1MPa.
Embodiment two
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1:1.3 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 12%HCL, 2%HF, 3% thionamic acid, 2% formic acid, 2% acetic acid, 2% succinic acid, 0.1% quinoline Benzyl Chloride quaternary ammonium salt, 0.5% quinoline dichlorobutane quaternary ammonium salt, 0.4% tributyl methyl phosphonium iodide ammonium, 0.7% butynediol, and 0.1% oleic imidazolinone acetate, 0.2% naphthenic acid imidazoline acetate, 0.6% alkylphenol polyoxyethylene sulfonic acid, 0.5% aliphatic amine polyoxyethylene ether sulfonic acid, 0.05% octadecyl trimethyl ammonium chloride, 0.2% dodecyl benzyl dimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 2% sodium carbonate, 0.5% salt of wormwood, 4% bicarbonate of ammonia, 1% hydrogen peroxide, 1.5% ammonium persulphate, 3mg/LN-ethyl, and N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, 1mg/L perfluorooctyl sulfonyl quaternary amine oxide compound, 0.03% salt-free lauric acid imidazoline, 0.02% salt-free Viscotrol C tetrahydroglyoxaline, 0.01% sodium chloroacetate, 0.02% diethylenetriamine carboxylate salt, the Natvosol of 0.01%, the 0.01% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1:1.3, and reference standard SY/T5405 measures its erosion rate, is all less than 4.5g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,60mg/L of 0.15% of spearhead, the naphthenic acid imidazoline acetate of 60mg/L, the propiolic alcohol of 15mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1:1.3 respectively, A agent prescription injects 6m
3, B agent prescription injects 7.8m
3, and then inject displacing liquid, displacing liquid consist of 2% glycerol, the OP-10 of 200mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well directly proceeded to production after 4 hours.
Field conduct effect: compare with before measure, injection pressure decline 2.2 ~ 3.5MPa.
Embodiment three
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1.2:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 10%HCL, 1%HF, 2% nitric acid, 2% formic acid, 4% succinic acid, 0.6% quinoline benzyl dichloride quaternary ammonium salt, 0.5% Tetramethylammonium iodide, 0.3% propiolic alcohol, and 0.4% naphthenic acid imidazoline acetate, 0.3% fatty alcohol-polyoxyethylene ether sulfonic acid, 0.8% aliphatic amine polyoxyethylene ether sulfonic acid, 0.1% dodecyl benzyl dimethyl ammonium chloride, 0.2% Dodecyl trimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 2% saleratus, 6% bicarbonate of ammonia, 3% hydrogen peroxide, 2% ammonium persulphate, 2mg/LN-ethyl, and N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, 2mg/L perfluorooctyl sulfonyl quaternary amine oxide compound, 0.1% salt-free oleic imidazolinone, 0.05% salt-free Viscotrol C tetrahydroglyoxaline, 0.02% sodium chloroacetate, 0.01% triethylene tetramine carboxylate salt, 0.01% hydroxypropylcellulose, the 0.05% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1.2:1, and reference standard SY/T5405 measures its erosion rate, is all less than 5.4g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,70mg/L of 0.2% of spearhead, the naphthenic acid imidazoline acetate of 50mg/L, the propiolic alcohol of 15mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1.2:1 respectively, A agent prescription injects 9m
3, B agent prescription injects 7.5m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 1.5%, the fluorine surfactant of OP-10,3mg/L of 300mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well directly proceeded to production after 8 hours.
Field conduct effect: compare with before measure, injection pressure decline 1.7 ~ 4.1MPa.
Embodiment four
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 6%HCL, 7% thionamic acid, 3% formic acid, 2% citric acid, 0.5% quinoline Benzyl Chloride quaternary ammonium salt, 0.01% potassiumiodide, 0.01% tributyl methyl phosphonium iodide ammonium, 0.4% propiolic alcohol, and 0.2% oleic imidazolinone acetate, 0.3% lauric acid imidazoline acetate, 0.6% fatty alcohol-polyoxyethylene ether sulfonic acid, 1.0% alkylphenol polyoxyethylene sulfonic acid 0.3% aliphatic amine polyoxyethylene ether sulfonic acid, 0.02% dodecyl benzyl dimethyl ammonium chloride, 0.01% tetradecyl trimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 6% bicarbonate of ammonia, 4% saleratus, 2% hydrogen peroxide, 2% ammonium persulphate, 2mg/L perfluoro octyl sulfonic acid, 3mg/L perfluorooctyl sulfonyl quaternary amine oxide compound, 0.2% salt-free oleic imidazolinone, 0.4% salt-free Viscotrol C tetrahydroglyoxaline, 0.3% ethylenediamine tetraacetic acid (EDTA), 0.02% triethylene tetramine carboxylate salt, 0.01% hydroxypropyl guar gum, 0.03% Natvosol, 0.02% hydroxypropylcellulose, all the other are clear water.
A and B mixes according to 1:1, and reference standard SY/T5405 measures its erosion rate, is all less than 4.6g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,80mg/L of 0.15% of spearhead, the naphthenic acid imidazoline acetate of 50mg/L, the propiolic alcohol of 20mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1:1 respectively, respectively inject 12m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 1.5%, the fluorine surfactant of OP-10,3mg/L of 300mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well is the row of returning after 4 hours, and the row of returning terminates directly to proceed to production afterwards.
Field conduct effect: compare with before measure, injection pressure decline 2.3 ~ 4.5MPa.
Embodiment five
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1.4:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 5%HCL, 2% nitric acid, 10% thionamic acid, 2% formic acid, 1% citric acid, 2% succinic acid, 0.3% quinoline Benzyl Chloride quaternary ammonium salt, 0.3% quinoline dichlorobutane quaternary ammonium salt, 0.01% potassiumiodide, 0.005% Tetramethylammonium iodide, 0.3% butynediol, 0.1% eneyne alcohol, 0.1% oleic imidazolinone acetate, 0.2% lauric acid imidazoline acetate, 0.1% naphthenic acid imidazoline acetate, 0.2% aliphatic acid polyethenoxy ether sulfonic acid, 0.4% alkylphenol polyoxyethylene sulfonic acid 0.5% aliphatic amine polyoxyethylene ether sulfonic acid, 0.01% octadecyl trimethyl ammonium chloride, 0.02% dodecyl benzyl dimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 4% sodium carbonate, 1% salt of wormwood, 3% saleratus, 3% hydrogen peroxide, 3% SPC-D, 1.5mg/LN-ethyl, and N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, 3mg/L perfluoro octyl sulfonic acid ammonium, 0.3% salt-free lauric acid imidazoline, 0.02% diethylenetriamine carboxylate salt, the Natvosol of 0.01%, the 0.03% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1.4:1, and reference standard SY/T5405 measures its erosion rate, is all less than 5.2g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,80mg/L of 0.25% of spearhead, the naphthenic acid imidazoline acetate of 30mg/L, the propiolic alcohol of 25mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1:1 respectively, A agent prescription injects 14m
3, B agent prescription injects 10m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 1.5%, the fluorine surfactant of OP-10,3mg/L of 300mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well is the row of returning after 6 hours, and the row of returning terminates directly to proceed to production afterwards.
Field conduct effect: compare with before measure, injection pressure decline 2.7 ~ 5.3MPa.
Embodiment six
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1:1.5 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 15%HCL, 2%HF, 2% formic acid, 5% citric acid, 0.4% quinoline benzyl dichloride quaternary ammonium salt, 0.3% quinoline dichlorobutane quaternary ammonium salt, 0.005% sodium iodide, 0.02% tributyl methyl phosphonium iodide ammonium, 0.2% propiolic alcohol, 0.5% first butyl alkynol, 0.3% lauric acid imidazoline acetate, 0.2% naphthenic acid imidazoline acetate, 0.7% fatty alcohol-polyoxyethylene ether sulfonic acid, 0.6% alkylphenol polyoxyethylene sulfonic acid 0.3% aliphatic amine polyoxyethylene ether sulfonic acid, 0.02% Dodecyl trimethyl ammonium chloride, 0.03% octadecyl trimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 3% sodium carbonate, 2% salt of wormwood, 2% Sodium Persulfate, 3% SPC-D, 1.5mg/LN-ethyl, N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, 3mg/L perfluoro octyl sulfonic acid, 0.2% salt-free stearic acid tetrahydroglyoxaline, 0.3% salt-free lauric acid imidazoline, 0.4% ethylenediamine tetraacetic acid (EDTA), 0.01% diethylenetriamine carboxylate salt, 0.02% hydroxypropylcellulose, 0.01% biological polymer XC, the 0.02% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1:1.5, and reference standard SY/T5405 measures its erosion rate, is all less than 4.0g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,60mg/L of 0.25% of spearhead, the naphthenic acid imidazoline acetate of 90mg/L, the propiolic alcohol of 20mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1:1.5 respectively, A agent prescription injects 9.5m
3, B agent prescription injects 14.25m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 2%, the fluorine surfactant of OP-10,3.5mg/L of 400mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well directly proceeded to production after 4 hours.
Field conduct effect: compare with before measure, injection pressure decline 3.2 ~ 4.8MPa.
Embodiment seven
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1.5:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 10%HCL, 2%HF, 3% thionamic acid, 3% acetic acid, 2% succinic acid, 0.4% quinoline Benzyl Chloride quaternary ammonium salt, 0.1% quinoline dichlorobutane quaternary ammonium salt, 0.002% sodium iodide, 0.01% tributyl methyl phosphonium iodide ammonium, 0.01% Tetramethylammonium iodide, 0.7% propiolic alcohol, 0.3% butynediol, 0.1% lauric acid imidazoline acetate, 0.3% naphthenic acid imidazoline acetate, 0.2% fatty alcohol-polyoxyethylene ether sulfonic acid, 0.5% alkylphenol polyoxyethylene sulfonic acid 0.5% aliphatic amine polyoxyethylene ether sulfonic acid, 0.1% tetradecyl trimethyl ammonium chloride, 0.5% dodecyl benzyl dimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 6% sodium carbonate, 2% sodium bicarbonate, 4% ammonium persulphate, 2% SPC-D, 2mg/LN-ethyl, and N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, 2mg/L perfluoro octyl sulfonic acid ammonium, 0.2% salt-free oleic imidazolinone, 0.4% salt-free Viscotrol C tetrahydroglyoxaline, 0.05% sodium chloroacetate, 0.01% diethylenetriamine carboxylate salt, 0.02% Natvosol, 0.01% hydroxypropylcellulose, the 0.02% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1.5:1, and reference standard SY/T5405 measures its erosion rate, is all less than 5.3g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,60mg/L of 0.2% of spearhead, the naphthenic acid imidazoline acetate of 90mg/L, the propiolic alcohol of 15mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1.5:1 respectively, A agent prescription injects 15m
3, B agent prescription injects 10m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 2.5%, the fluorine surfactant of OP-10,2.5mg/L of 300mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well is the row of returning after 4 hours, and the row of returning terminates directly to proceed to production afterwards.
Field conduct effect: compare with before measure, injection pressure decline 1.8 ~ 4.1MPa.
Embodiment eight
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1.2:1 A agent prescription and B agent prescription.
Wherein the mass percent of A agent prescription consists of: 5%HCL, 2% nitric acid, 10% acetic acid, 2% succinic acid, 0.4% quinoline Benzyl Chloride quaternary ammonium salt, 0.2% quinoline dichlorobutane quaternary ammonium salt, 0.02% Tetramethylammonium iodide, 0.003% potassiumiodide, 0.1% propiolic alcohol, 0.2% eneyne alcohol, 0.2% oleic imidazolinone acetate, 0.3% naphthenic acid imidazoline acetate, 0.7% fatty alcohol-polyoxyethylene ether sulfonic acid, 1.2% alkylphenol polyoxyethylene sulfonic acid, 0.02% octadecyl trimethyl ammonium chloride, 0.01% dodecyl benzyl dimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of: 3% bicarbonate of ammonia, 6% volatile salt, 2% hydrogen peroxide, 3% ammonium persulphate, 3mg/L perfluoro octyl sulfonic acid, 2mg/L perfluorooctyl sulfonyl quaternary amine oxide compound, 0.2% salt-free oleic imidazolinone, 0.3% salt-free Viscotrol C tetrahydroglyoxaline, 0.01% diethylenetriamine carboxylate salt, 0.02% triethylene tetramine carboxylate salt, 0.01% Natvosol, 0.01% biological polymer XC, the 0.03% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1.2:1, and reference standard SY/T5405 measures its erosion rate, is all less than 3.8g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,70mg/L of 0.25% of spearhead, the naphthenic acid imidazoline acetate of 60mg/L, the propiolic alcohol of 15mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1.2:1 respectively, A agent prescription injects 13m
3, B agent prescription injects 11m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 3%, the fluorine surfactant of OP-10,3.5mg/L of 500mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well directly proceeded to production after 6 hours.
Field conduct effect: compare with before measure, injection pressure decline 2.7 ~ 3.5MPa.
Embodiment nine
The unblocking agent of the present embodiment, is made up of by the volume ratio of 1.4:1 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: 5%HCL, 1%HF, 2% thionamic acid, 5% formic acid, 3% citric acid, 2% succinic acid, 0.4% quinoline Benzyl Chloride quaternary ammonium salt, 0.3% quinoline dichlorobutane quaternary ammonium salt, 0.1% propiolic alcohol, 0.3% methylbutynol, 0.1% eneyne alcohol 0.005% potassiumiodide, 0.02% tributyl methyl phosphonium iodide ammonium, 0.2% oleic imidazolinone acetate 0.01% lauric acid imidazoline acetate 0.3% naphthenic acid imidazoline acetate, 0.7% fatty alcohol-polyoxyethylene ether sulfonic acid, 1.1% alkylphenol polyoxyethylene sulfonic acid, 0.02% tetradecyl trimethyl ammonium chloride, 0.05% dodecyl benzyl dimethyl ammonium chloride, all the other are clear water.
Wherein the mass percent of B agent prescription consists of:, 5% sodium carbonate, 4% bicarbonate of ammonia, 2% hydrogen peroxide, 2.5% SPC-D, the perfluoro octyl sulfonic acid of 3mg/L, 2mg/L perfluorooctyl sulfonyl quaternary amine oxide compound, 0.2% salt-free stearic acid tetrahydroglyoxaline, 0.1% salt-free lauric acid imidazoline, 0.1% salt-free Viscotrol C tetrahydroglyoxaline, the sodium chloroacetate of 0.05%, 0.02% triethylene tetramine carboxylate salt, 0.02% hydroxypropylcellulose, 0.01% hydroxypropyl guar gum, 0.03% pair of octadecyl trimethyl quaternary ammonium salt, all the other are clear water.
A and B mixes according to 1.4:1, and reference standard SY/T5405 measures its erosion rate, is all less than 4.5g/m
2h.
The de-plugging process of the present embodiment, step is: with reference to Fig. 1, two cementing trucks are connected with a threeway mixing tank respectively, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead, the quinoline Benzyl Chloride consisting of OP-9,60mg/L of 0.3% of spearhead, the naphthenic acid imidazoline acetate of 40mg/L, the propiolic alcohol of 20mg/L, all the other water, injection rate is according to formula Q
beforecalculate, then above-mentioned A agent prescription and B agent prescription are injected according to the ratio of 1.4:1 respectively, A agent prescription injects 16m
3, B agent prescription injects 11.5m
3, and then inject displacing liquid, displacing liquid consist of the glycerol of 2%, the fluorine surfactant of OP-10,4.5mg/L of 300mg/L, all the other water, injection rate is according to formula Q
topcalculate, injected clear water, injection rate is according to formula Q
clearlycalculate, closing well is the row of returning after 6 hours, and the row of returning terminates directly to proceed to production afterwards.
Field conduct effect: compare with before measure, injection pressure decline 2.3 ~ 4.6MPa.
Due to different oil field, its oil reservoir of the oil and water well of different blocks is different from water filling layer geologic feature, blocking composition is different from situation, also different to the requirement of each component in unblocking agent formula, right to include but not limited to described in article component and the content of each formula, and any one comprises A, B agent prescription that different components described in right and different content form and all belongs within the scope of claim.
Claims (2)
1. an oil and water well self-generating foam unblocking agent, is characterized in that, is made up of by the volume ratio of 1 ~ 2:1 ~ 2 A agent prescription and B agent prescription,
Wherein the mass percent of A agent prescription consists of: mineral acid 0 ~ 25%, organic acid 0 ~ 10%, quinoline quaternary ammonium salt 0.1 ~ 0.5%, alkynol 0.01 ~ 0.5%, salt compounded of iodine 0.001 ~ 0.05%, tetrahydroglyoxaline acetate 0.01 ~ 0.3%, polyoxyethylene ether sulfonic acid 0.01 ~ 1.5%, alkyl methyl quaternary ammonium salt 0.01 ~ 0.5%, surplus are clear water composition;
Wherein the mass percent of B agent prescription consists of: carbonate 0.5 ~ 30%, superoxide 0.5 ~ 5%, and fluorine surfactant 0 ~ 15mg/L, salt-free tetrahydroglyoxaline 0.01 ~ 0.5%, Fe stabilizer 0.01 ~ 0.1%, suds-stabilizing agent 0.05 ~ 1%, surplus are clear water composition;
In A agent prescription:
Be the mixture of HCl, HF, nitric acid and thionamic acid in described mineral acid, mass ratio is followed successively by: HCl:HF: nitric acid: thionamic acid=1 ~ 25:0.5 ~ 20:0 ~ 20:0 ~ 20;
Described organic acid is in mass ratio: formic acid: acetic acid: citric acid: succinic acid=0 ~ 10:0 ~ 10:0 ~ 10:0 ~ 10;
Described quinoline quaternary ammonium salt is one or more the mixture in the quaternary ammonium salt that synthesizes of the quaternary ammonium salt that synthesizes of the quaternary ammonium salt that synthesizes of quinoline and Benzyl Chloride or quinoline and benzyl dichloride or quinoline and dichlorobutane, and the ratio of mixture is arbitrary;
Described alkynol is one or more the mixture in propiolic alcohol or butynediol or methylbutynol or eneyne alcohol, and the ratio of mixture is arbitrary;
Described salt compounded of iodine is one or more the mixture in potassiumiodide, sodium iodide, tributyl methyl phosphonium iodide ammonium, Tetramethylammonium iodide, and the ratio of mixture is arbitrary;
Described tetrahydroglyoxaline acetate is one or more the mixture in oleic imidazolinone acetate, lauric acid imidazoline acetate, naphthenic acid imidazoline acetate, and the ratio of mixture is arbitrary;
Described polyoxyethylene ether sulfonic acid is one or more the mixture in fatty alcohol-polyoxyethylene ether sulfonic acid, alkylphenol polyoxyethylene sulfonic acid, aliphatic acid polyethenoxy ether, aliphatic amine polyoxyethylene ether, and the ratio of mixture is arbitrary;
Described alkyl methyl quaternary ammonium salt is one or more the mixture in Dodecyl trimethyl ammonium chloride, tetradecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, and the ratio of mixture is arbitrary;
In B agent prescription:
Described carbonate is one or more the mixture in sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, bicarbonate of ammonia, and the ratio of mixture is arbitrary;
Described superoxide is hydrogen peroxide, Sodium Persulfate, one or more the mixture in ammonium persulphate, SPC-D, and the ratio of mixture is arbitrary;
Described fluorine surfactant is N-ethyl, one or more the mixture in N-hydroxyethyl perfluorooctyl sulfonyl ammonium phosphate, perfluoro octyl sulfonic acid ammonium, perfluoro octyl sulfonic acid, perfluorooctyl sulfonyl quaternary amine oxide compound, and the ratio of mixture is arbitrary;
Described salt-free tetrahydroglyoxaline is one or more the mixture in salt-free oleic imidazolinone, salt-free lauric acid imidazoline, salt-free stearic acid tetrahydroglyoxaline, salt-free Viscotrol C tetrahydroglyoxaline, and the ratio of mixture is arbitrary;
Described Fe stabilizer is one or more the mixture in sodium chloroacetate, edetate, diethylenetriamine carboxylate salt, triethylene tetramine carboxylate salt, and the ratio of mixture is arbitrary;
Described suds-stabilizing agent is hydroxypropyl guar gum, Natvosol, hydroxypropylcellulose, biological polymer one or more the mixture also in virgin rubber, two octadecyl trimethyl quaternary ammonium salt, and the ratio of mixture is arbitrary;
Described value does not all comprise 0.
2. based on the de-plugging process of a kind of oil and water well self-generating foam unblocking agent according to claim 1, it is characterized in that, step is: be connected with a threeway mixing tank respectively by 2 cementing trucks, threeway mixing tank is connected with the tubing valve of oil well or water injection well again, first inject spearhead with cementing truck, injection rate Q
before=wellbore volume+5m
3spearhead consist of 0.1% ~ 1% OP-9, the quinoline Benzyl Chloride of 50 ~ 100mg/L, the naphthenic acid imidazoline acetate of 100 ~ 50mg/L, the propiolic alcohol of 10 ~ 30mg/L, then A agent is injected with a cementing truck, a cementing truck injects B agent, the injection of A agent and B agent must be carried out simultaneously, and the two injection discharge capacity proportional range is 1 ~ 2:1 ~ 2, after A agent and B agent are injected and terminated, inject displacing liquid, injection rate Q
top=wellbore volume+2m
3, the glycerol consisting of 1%-5% of displacing liquid, the OP-10 of 200 ~ 500mg/L, fluorine surfactant 2 ~ 10mg/L, and then injected clear water, injection rate Q
clearlythe wellbore volume of=80%, closing well more than 4 hours, carries out the row of returning or directly proceeds to production.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294715.8A CN103396776B (en) | 2013-07-12 | 2013-07-12 | A kind of oil and water well self-generating foam unblocking agent and de-plugging process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310294715.8A CN103396776B (en) | 2013-07-12 | 2013-07-12 | A kind of oil and water well self-generating foam unblocking agent and de-plugging process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103396776A CN103396776A (en) | 2013-11-20 |
| CN103396776B true CN103396776B (en) | 2016-01-06 |
Family
ID=49560507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310294715.8A Active CN103396776B (en) | 2013-07-12 | 2013-07-12 | A kind of oil and water well self-generating foam unblocking agent and de-plugging process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103396776B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103642478B (en) * | 2013-11-27 | 2016-03-09 | 中国石油天然气股份有限公司 | A kind of unblocking agent for removing polymer contaminants |
| CN103711467A (en) * | 2013-12-25 | 2014-04-09 | 东营盛世石油科技有限责任公司 | Formula for improving recovery ratio of authigenic CO2 |
| CN103821486B (en) * | 2014-03-11 | 2016-04-20 | 中国石油化工股份有限公司 | A kind of new chemical is handled up method for increasing |
| CN103937475B (en) * | 2014-04-22 | 2017-01-25 | 大庆中油泰克石油技术服务有限公司 | Carbon dioxide acidification blocking remover and process of not reversely discharging raffinate after acidification |
| CN104031626B (en) * | 2014-06-25 | 2017-05-17 | 西安石油大学 | Water injection corrosion inhibitor for sewage corrosion control of oilfield production water injection system |
| CN104087280B (en) * | 2014-07-10 | 2016-09-28 | 中国石油大学(华东) | A kind of low-permeability oil deposit carbon dioxide non-phase-mixing driving presses down alters closure system and method for blocking |
| CN104650839B (en) * | 2015-02-03 | 2017-09-26 | 中国海洋石油总公司 | A kind of oil field corrosion-retarding germicide and preparation method thereof |
| CN105131926B (en) * | 2015-10-09 | 2017-12-12 | 西安石油大学 | A kind of preparation method of foaming water discharge corrosion inhibiter |
| CN106634922A (en) * | 2016-09-13 | 2017-05-10 | 中国海洋石油总公司 | Self generated gas foam oil-displacing agent liquid and application and injection increase and yield increase method thereof |
| CN106566504B (en) * | 2016-10-12 | 2018-04-17 | 延安市永科石油工程技术服务有限公司 | In a kind of fanout free region and acid oil, well de-plugging agent and its use technique |
| CN106978155B (en) * | 2017-03-19 | 2019-08-27 | 西南石油大学 | A kind of disturbance capsule shape solid foam discharging agent certainly |
| CN109681176B (en) * | 2017-10-18 | 2021-08-03 | 中国石油化工股份有限公司 | Method for liquid drainage and gas production by adopting oil-resistant foam drainage agent composition |
| CN108676551A (en) * | 2018-05-18 | 2018-10-19 | 淄博清泉生态科技有限公司 | foam displacing agent |
| CN109251742B (en) * | 2018-09-29 | 2022-03-01 | 中国石油天然气集团有限公司 | Corrosion inhibitor for clean diverting acid and preparation method thereof |
| CN110564395A (en) * | 2019-09-30 | 2019-12-13 | 新疆准东准盈技术有限责任公司 | preparation method of blocking remover for oil extraction |
| CN112627774A (en) * | 2019-10-08 | 2021-04-09 | 中国石油天然气股份有限公司 | Foam acid ground injection system and use method thereof |
| CN111394078A (en) * | 2020-04-29 | 2020-07-10 | 西安长泽石化科技有限公司 | Foam uniform acid and preparation method and use method thereof |
| CN114316929B (en) * | 2020-10-10 | 2023-03-28 | 中石化南京化工研究院有限公司 | Microbubble foaming system for foam drilling |
| CN112877046B (en) * | 2021-01-18 | 2024-01-05 | 中国石油化工股份有限公司 | Deep thickened oil blocking remover for oil well and preparation method and application method thereof |
| CN113136184B (en) * | 2021-04-16 | 2022-12-09 | 河北科技大学 | Composite gel breaker, temporary plugging agent for oil field well, preparation method and application |
| CN115785930A (en) * | 2022-11-10 | 2023-03-14 | 长江大学 | Self-generated foam wellbore cleaning agent and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4681164A (en) * | 1986-05-30 | 1987-07-21 | Stacks Ronald R | Method of treating wells with aqueous foam |
| US4737296A (en) * | 1984-10-26 | 1988-04-12 | Union Oil Company Of California | Foaming acid-containing fluids |
| CN101196109A (en) * | 2007-12-27 | 2008-06-11 | 大庆石油学院 | Three-segment type block releasing technique for oil layer |
| US7514390B2 (en) * | 2004-12-28 | 2009-04-07 | Conocophillips Company | Method for removing filter cake from a horizontal wellbore using acid foam |
| CN101747881A (en) * | 2010-01-14 | 2010-06-23 | 胜利油田胜海节能设备有限公司 | Descaling and blockage relieving agent for oil-water well |
| CN102373036A (en) * | 2010-08-16 | 2012-03-14 | 安东石油技术（集团）有限公司 | Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells |
-
2013
- 2013-07-12 CN CN201310294715.8A patent/CN103396776B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4737296A (en) * | 1984-10-26 | 1988-04-12 | Union Oil Company Of California | Foaming acid-containing fluids |
| US4681164A (en) * | 1986-05-30 | 1987-07-21 | Stacks Ronald R | Method of treating wells with aqueous foam |
| US7514390B2 (en) * | 2004-12-28 | 2009-04-07 | Conocophillips Company | Method for removing filter cake from a horizontal wellbore using acid foam |
| CN101196109A (en) * | 2007-12-27 | 2008-06-11 | 大庆石油学院 | Three-segment type block releasing technique for oil layer |
| CN101747881A (en) * | 2010-01-14 | 2010-06-23 | 胜利油田胜海节能设备有限公司 | Descaling and blockage relieving agent for oil-water well |
| CN102373036A (en) * | 2010-08-16 | 2012-03-14 | 安东石油技术（集团）有限公司 | Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells |
Non-Patent Citations (3)
| Title |
|---|
| 利用自生气的油气田开发开采工艺技术概况;张光焰等;《油田化学》;20070925;第24卷(第03期);272-276 * |
| 注水井泡沫酸解堵研究;田乃林等;《承德石油高等专科学校学报》;20060625;第8卷(第02期);1-4 * |
| 酸化解堵体系研究及应用现状;陈平中等;《内蒙古石油化工》;20060728(第07期);76-79 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103396776A (en) | 2013-11-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103396776B (en) | A kind of oil and water well self-generating foam unblocking agent and de-plugging process | |
| WO2019223346A1 (en) | Nitrogen composite huff-puff method for closed fault block oil reservoir | |
| CN101196109B (en) | Three-segment type block releasing technique for oil layer | |
| CN103965844B (en) | Low-density microvesicle workover fluid | |
| US20140338903A1 (en) | Method for enhanced oil recovery by in situ carbon dioxide generation | |
| US6966379B2 (en) | Methods of fracturing a subterranean formation using a pH dependent foamed fracturing fluid | |
| CN105086989A (en) | Shale gas reservoir pre-fracture composite acid solution, preparation method and application thereof | |
| CN105441060A (en) | Antiswelling discharge-aiding agent and preparation method thereof | |
| CN1329474C (en) | Alcohol-base fracturing fluid | |
| CN101182409A (en) | Anti-collapse circulative micro-foam drilling fluid or well completion fluid | |
| CN111622709B (en) | Water plugging method for lower layer water of thin-interlayer heavy oil reservoir and water plugging agent system used in same | |
| CN103509540A (en) | Gradual injection oil layer deep part blocking remover and injection technology thereof | |
| CN110540833A (en) | stable carbon dioxide water-based foam fracturing fluid, preparation method thereof and application of fracturing fluid in improvement of shale gas recovery ratio | |
| CN107165612B (en) | A kind of method for removing blockage for oil/gas well | |
| CN108456511B (en) | In-layer generation of CO2System and use thereof | |
| CN103821486B (en) | A kind of new chemical is handled up method for increasing | |
| CN102373036A (en) | Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells | |
| CN114085662A (en) | Preparation method and application of chemical self-heating energizing fracturing fluid suitable for low-pressure low-permeability oil and gas reservoir | |
| CN104481475A (en) | Oil well carbon dioxide carbonated water throughput production increasing method | |
| CN103678920B (en) | It is applicable to the computational methods of extra-low-permeability reservoir granule plug agent amount | |
| EP0186663B1 (en) | Gel and process for retarding fluid flow | |
| CN109505570A (en) | Spontaneous CO in sublevel is taken turns in a kind of improvement more2The method of profile modification | |
| CN108913115B (en) | Low-damage composite fracturing fluid and application method thereof | |
| CN105542732A (en) | Autogenetic foam micelle acid liquid for water injection well | |
| CN113105880B (en) | Blockage removal system and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200114 Address after: Room 1102, building C, northwest Guojin center, Wenjing Road, fengchengba Road, Weiyang District, Xi'an City, Shaanxi Province Patentee after: Shaanxi Yinuo Petroleum Engineering Technology Service Co., Ltd. Address before: Two East Road 710065 Shaanxi electronic city of Xi'an province No. 18 Patentee before: Xian Petroleum Univ. |
|
| TR01 | Transfer of patent right |