CN104293330B - A kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent - Google Patents
A kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent Download PDFInfo
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- CN104293330B CN104293330B CN201310297000.8A CN201310297000A CN104293330B CN 104293330 B CN104293330 B CN 104293330B CN 201310297000 A CN201310297000 A CN 201310297000A CN 104293330 B CN104293330 B CN 104293330B
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/44—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing organic binders only
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
- C09K8/493—Additives for reducing or preventing gas migration
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
Abstract
The present invention relates to a kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent, belongs to petroleum drilling engineering chemical agent applied technical field, it is characterised in that consisting of：Acrylamide, modifying agent, emulsifying agent, initiator, N, N methylene-bisacrylamides, formaldehyde, retarder and water；The percentage by weight of wherein each component is：Acrylamide：4.5～7.5%；Modifying agent：0.2～0.5%；Emulsifying agent：0.05～0.1%；Initiator:0.02～0.05%；N, N methylene-bisacrylamide：0.3～1%；Formaldehyde：0.1～0.5%；Retarder:0.5～4.5%；Water:Surplus.It is low that the envelope of the present invention alters viscosity of the agent under the non-Gelation Conditions of normal temperature, easily pumps into stratum, waits intensity height after the glue that congeals into, and with antiacid, high temperature resistance, antiscour, stable performance, gelation time are controllable, the characteristics of sealing ratiod is high.
Description
Technical field：
The present invention relates to a kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent, belongs to petroleum drilling engineering chemical agent application technology
Field.
Background technology：
, based on continental deposit, the rhythm is complicated, and main force oil field is currently in High water cut or ultra-high water-containing for China's majority oil reservoir
Productive life, reservoir heterogeneity aggravate, and macropore phenomenon is serious, remaining oil distribution scatteredization, conventional water drive, chemical flooding with micro-
Biological oil recovery technique can not meet the Production requirement of old filed, increase substantially oil recovery factor become one highly important
Task.Statistics shows that, in the application technology that old filed improves recovery ratio, gas-injection oil-production is worldwide predominantly
Position.In recent years, gas injection is driven and is become in world today's oil exploitation and had a high potential with the situation and the significant effect that increase year by year
EOR technology.
The oil reservoir of China belongs to continental deposit mostly, and serious heterogeneity, in CO2During the gas displacement of reservoir oil, by the cunning of gas
The impact of the factors such as de- effect, viscous fingering and Reservoir Heterogeneity, it is easy to has channeling occurs and has channeling situation differs greatly,
Macropore channelling is generally there are, the problems such as high permeability zone is advanced by leaps and bounds.Injection CO2Early breakthrough by the most of reservoir for causing oil reservoir not
Involved, made oil reservoir injection CO2Exploitation is difficult to reach expected development effectiveness.Therefore in CO2Before gas drive work, effectively seal
Stifled high permeability zone, to preventing in CO2Occur during gas drive most important along the has channeling of high permeability zone.
For high temperature LOW PERMEABILITY RESERVOIR CO2Problem present in gas drive process, develops the temperature resistance of function admirable, resists
Salt, easily injection envelope alter agent, are to improve to improve CO2Flooding Efficiency in the urgent need to.
Content of the invention：
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive is sealed
Alter agent, the viscosity under the non-Gelation Conditions of normal temperature is low, easily pump into stratum, intensity is high after waiting the glue that congeals into, with antiacid, high temperature resistance,
Antiscour, stable performance, gelation time are controllable, the characteristics of sealing ratiod is high.
The present invention is by following technical solution realizing above-mentioned purpose.
A kind of high temperature LOW PERMEABILITY RESERVOIR CO provided by the present invention2Gas drive envelope alters agent, consisting of：Acrylamide, modifying agent,
Emulsifying agent, initiator, N,N methylene bis acrylamide, formaldehyde, retarder and water；
The percentage by weight of wherein each component is：
Acrylamide：4.5～7.5%；
Modifying agent：0.2～0.5%；
Emulsifying agent：0.05～0.1%；
Initiator:0.02～0.05%；
N,N methylene bis acrylamide：0.3～1%；
Formaldehyde：0.1～0.5%；
Retarder:0.5～4.5%；
Water:Surplus；
Described modifying agent is：Solution property, acrylyl oxy-ethyl-trimethyl salmiac, first
One kind in base acrylyl oxy-ethyl-trimethyl salmiac, dimethyl diallyl ammonium chloride；
Described emulsifying agent is：Lauryl sodium sulfate salt, calcium salt of dodecylbenzene sulfonate, OP-10, OP-15, T-60,
One kind in T-80, S-80, S-85；
Described initiator is：Potassium peroxydisulfate, benzoyl peroxide, di-t-butyl peroxide, dilauroyl peroxide, azo
One kind in bis-isobutyronitrile, the peroxidating trimethylacetic acid tert-butyl ester, isopropyl benzene hydroperoxide；
Described retarder is：Hydroquinones, 1,4-benzoquinone, phenothiazine, p-tert-Butylcatechol, methylene blue, chlorination
One kind in cuprous, ferric trichloride；
Described water is simulated formation water, and its salinity is：57728.92mg.L-1.
A kind of high temperature LOW PERMEABILITY RESERVOIR CO provided by the present invention2Gas drive envelope alters the preparation method of agent：
In proportion by acrylamide, modifying agent, emulsifying agent, initiator, N,N methylene bis acrylamide, formaldehyde, slow poly-
Agent is added in the beaker of 250mL, is subsequently adding salinity for 57728.92mg.L-1Simulated formation water, constant volume to 100mL,
Stir, the envelope for obtaining final product the present invention alters agent solution.
The present invention is had the advantages that compared with prior art：
1st, to alter viscosity of the agent under the non-Gelation Conditions of normal temperature relatively low for envelope of the invention, easily pumps into stratum, and it is very low to inject pressure,
It is particularly well-suited to the closure of LOW PERMEABILITY RESERVOIR.
2nd, envelope of the invention alters that agent gelation time is controllable, and the gelation time at 126 DEG C can be controlled in 2-30 hours,
Completely after plastic, intensity is high, and viscosity is 106More than mPa.s.
3rd, envelope of the invention alters that agent is antiacid, high temperature resistance, and the gel after plastic, under the conditions of pH=3,126 DEG C, is placed 3 months
Viscosity stablization.
4th, envelope of the invention alters agent energy antiscour, and the sealing ratiod after waterflood flush 40PV is still greater than 90%.
Description of the drawings：
Fig. 1 is the graph of relation that envelope alters agent injection rate and sealing ratiod.
Fig. 2 is the graph of relation that water drive fill out sand tube blocks logistics organizations.
Fig. 3 is CO2Drive the graph of relation that fill out sand tube blocks logistics organizations.
Specific embodiment：
With reference to specific embodiment, the invention will be further described：
Embodiment 1：
By 4.5g acrylamides, 0.2g modifying agent, 0.03g initiators, 0.05g emulsifying agents, 0.5gN, N- di-2-ethylhexylphosphine oxides third
Acrylamide, 0.25g formaldehyde, 0.5g retarders are added in 250mL beakers, are subsequently adding simulated formation water, constant volume to 100mL,
Stir, obtain final product L-1 envelopes and alter agent solution.
The envelope is altered agent solution to be placed under conditions of 126 DEG C, sealing is placed time and congealed into glue；Gelation time is about 10h, plastic
Viscosity is 241 × 104mPa.s.
Embodiment 2：
By 4.5g acrylamides, 0.3g modifying agent, 0.04g initiators, 0.05g emulsifying agents, 0.5g N, N- di-2-ethylhexylphosphine oxides third
Acrylamide, 0.25g formaldehyde, 1g retarders are added in 250mL beakers, are subsequently adding simulated formation water, and constant volume is stirred to 100mL
Mix uniformly, obtain final product L-2 envelopes and alter agent solution.
The envelope is altered agent solution to be placed under conditions of 126 DEG C, sealing is placed time and congealed into glue；Gelation time is about 11.5h, into
Gumminess is 150 × 104mPa.s.
Embodiment 3：
By 5g acrylamides, 0.4g modifying agent, 0.05g initiators, 0.1g emulsifying agents, 0.5g N, N- methylene bisacrylamides
Acid amides, 0.25g formaldehyde, 5g retarders are added in 250mL beakers, are subsequently adding simulated formation water, constant volume to 100mL, stirring
Uniformly, L-3 envelopes are obtained final product and alters agent solution.
The envelope is altered agent solution to be placed under conditions of 126 DEG C, sealing is placed time and congealed into glue；Gelation time is about 18h, plastic
Viscosity is 128 × 104mPa.s.
Embodiment 4：
Rock core erosion resistibility is determined：
L-1 envelopes in embodiment 1 are altered agent solution and are injected in natural core, under conditions of 126 DEG C, wait solidifying 48h into
Glue, then lasting water drive, determines the sealing ratiod of rock core.As a result as shown in table 1, table 2.
1 rock core basic parameter of table
As a result show：The flushing resistance that the envelope alters agent gel is good.Reservoir core plugging rate is slow with the increase of injected water volume
Slow decline, still greater than 90%, sealing characteristics is good for sealing ratiod after waterflood flush 40PV.
Embodiment 5：
Injection rate is determined with the relation of sealing ratiod：
In order to select the injection rate of economical rationality, 8 kinds of different injection rates are devised, the L-1 envelopes in embodiment 1 are altered agent
After solution is injected in fill out sand tube, under conditions of 126 DEG C, place 48h and wait the glue that congeals into, then carry out water drive, determine fill out sand tube
Sealing ratiod.As a result show, as envelope alters the increase of agent solution injection rate, fill out sand tube sealing ratiod is improved constantly, when injection rate reaches
During to 0.6PV, sealing ratiod can reach more than 90%, it can be seen that, it is relatively good to the sealing characteristics of rock core that this envelope alters agent.Experiment
As a result as shown in Figure 1.
Embodiment 6：
Water drive fill out sand tube blocks logistics organizations：
After L-1 envelopes in embodiment 1 are altered agent solution injection fill out sand tube, the gelling temperature of fill out sand tube is set as 126
DEG C, 48h determines its plugging effect after treating plastic.When envelope alters agent solution in fill out sand tube after plastic, follow-up water-flooding pressure
Compared with the water-flooding pressure before closure, dramatically increase.Thus experiment understands that the envelope is altered agent system and can play good closure
Effect.Experimental result is as shown in Figure 2.
Embodiment 7：
CO2Drive fill out sand tube closure logistics organizations：
After L-1 envelopes in embodiment 1 are altered agent solution injection fill out sand tube, the gelling temperature of fill out sand tube is set as 126
DEG C, 48h determines its plugging effect after treating plastic.In experiment water drive and injection envelope alter agent solution pressure all very low, only about
Have 0.08MPa or so, illustrate seal alter agent solution injection good.CO is used after closure again2Displacement, measuring its breakthrough pressure is
2.2MPa, illustrates that the envelope alters agent gel to CO2There is extraordinary plugging action.Experimental result is as shown in Figure 3.
Claims (5)
1. a kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent, it is characterised in that consisting of：Acrylamide, modifying agent, emulsifying agent,
Initiator, N,N methylene bis acrylamide, formaldehyde, retarder and water；The percentage by weight of wherein each component is：
Described modifying agent is：Solution property, acrylyl oxy-ethyl-trimethyl salmiac, methyl
One kind in acrylyl oxy-ethyl-trimethyl salmiac, dimethyl diallyl ammonium chloride.
2. a kind of high temperature LOW PERMEABILITY RESERVOIR CO according to claim 12Gas drive envelope alters agent, it is characterised in that described emulsifying agent
For：Lauryl sodium sulfate salt, calcium salt of dodecylbenzene sulfonate, in OP-10, OP-15, T-60, T-80, S-80, S-85 one
Kind.
3. a kind of high temperature LOW PERMEABILITY RESERVOIR CO according to claim 12Gas drive envelope alters agent, it is characterised in that described initiator
For：Potassium peroxydisulfate, benzoyl peroxide, di-t-butyl peroxide, dilauroyl peroxide, azodiisobutyronitrile, peroxidating uncle penta
One kind in tert-butyl acrylate, isopropyl benzene hydroperoxide.
4. a kind of high temperature LOW PERMEABILITY RESERVOIR CO according to claim 12Gas drive envelope alters agent, it is characterised in that described retarder
For：In hydroquinones, 1,4-benzoquinone, phenothiazine, p-tert-Butylcatechol, methylene blue, stannous chloride, ferric trichloride one
Kind.
5. a kind of high temperature LOW PERMEABILITY RESERVOIR CO according to claim 12Gas drive envelope alters agent, it is characterised in that described water is mould
Intend stratum water, its salinity is：57728.92mg.L-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310297000.8A CN104293330B (en) | 2013-07-16 | 2013-07-16 | A kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310297000.8A CN104293330B (en) | 2013-07-16 | 2013-07-16 | A kind of high temperature LOW PERMEABILITY RESERVOIR CO2Gas drive envelope alters agent |
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| CN104293330A CN104293330A (en) | 2015-01-21 |
| CN104293330B true CN104293330B (en) | 2017-03-15 |
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| CN107882531B (en) * | 2017-12-01 | 2020-10-09 | 中国石油天然气股份有限公司 | Selective water control channeling sealing method for flooding production well of water-flooded oil reservoir |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358051A (en) * | 1993-10-22 | 1994-10-25 | Halliburton Company | Method of water control with hydroxy unsaturated carbonyls |
| US6012524A (en) * | 1998-04-14 | 2000-01-11 | Halliburton Energy Services, Inc. | Remedial well bore sealing methods and compositions |
| US6187839B1 (en) * | 1999-03-03 | 2001-02-13 | Halliburton Energy Services, Inc. | Methods of sealing compositions and methods |
| CN101016452A (en) * | 2007-02-28 | 2007-08-15 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparation of composite cation blocking agent and use method of blocking and polymerizing |
| CN101906292A (en) * | 2009-06-05 | 2010-12-08 | 中国石油天然气股份有限公司 | High-strength temporary blocking agent and preparation method thereof |
| CN102191023A (en) * | 2010-03-19 | 2011-09-21 | 中国石油天然气股份有限公司 | Temporary plugging agent for medium/high-temperature oil-gas reservoir |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8343896B2 (en) * | 2005-01-24 | 2013-01-01 | Halliburton Energy Services, Inc. | Sealant compositions comprising diutan and associated methods |
-
2013
- 2013-07-16 CN CN201310297000.8A patent/CN104293330B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5358051A (en) * | 1993-10-22 | 1994-10-25 | Halliburton Company | Method of water control with hydroxy unsaturated carbonyls |
| US6012524A (en) * | 1998-04-14 | 2000-01-11 | Halliburton Energy Services, Inc. | Remedial well bore sealing methods and compositions |
| US6187839B1 (en) * | 1999-03-03 | 2001-02-13 | Halliburton Energy Services, Inc. | Methods of sealing compositions and methods |
| CN101016452A (en) * | 2007-02-28 | 2007-08-15 | 中国石化股份胜利油田分公司孤岛采油厂 | Preparation of composite cation blocking agent and use method of blocking and polymerizing |
| CN101906292A (en) * | 2009-06-05 | 2010-12-08 | 中国石油天然气股份有限公司 | High-strength temporary blocking agent and preparation method thereof |
| CN102191023A (en) * | 2010-03-19 | 2011-09-21 | 中国石油天然气股份有限公司 | Temporary plugging agent for medium/high-temperature oil-gas reservoir |
Non-Patent Citations (3)
| Title |
|---|
| 一种新型改性淀粉凝胶的研制及其性能评价;梁淑芹等;《长江大学学报（自然科学版）》;20130531;第10卷(第13期);27-32 * |
| 丙烯酰胺单体的缓聚合研究;黄志宇等;《西南石油学院学报》;20000930;第22卷(第03期);82-84 * |
| 地下成胶的淀粉-聚丙烯酰胺水基凝胶调堵剂性能研究;李宏岭等;《油田化学》;20051225;第22卷(第04期);358-361 * |
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