CN102399545B - Sand-flushing well-cleaning agent for oil well - Google Patents
Sand-flushing well-cleaning agent for oil well Download PDFInfo
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Abstract
The invention relates to a sand-flushing well-cleaning agent for an oil well applied to an oil field, which comprises the following components in percentage by weight: 12.5-13.5% of nonyl phenol polyoxyethylene ether sodium sulfate, 6.5-7.0% of fatty acid single glycollic amide polyoxyethylene ether sulfate, 10.5-11.0% of alkyl phenol polyoxyethylene ether (10) sodium sulfate, 5.5-6.0% of alkyl phenol polyoxyethylene ether carboxylate, 4.5-5.0% of ammonium bicarbonate and the rest of water. The sand-flushing well-cleaning agent disclosed by the invention has the effects that 0.5-1.0% of sand-flushing well-cleaning agent for the oil well is added in the water to obtain sand-flushing well-cleaning agent for an oil well liquid; and after the sand-flushing well-cleaning agent is utilized for sand-flushing well-cleaning construction, the sand flushing efficiency can be improved by 50-73%.
Description
Technical field
The present invention relates to the oil extraction in oil field technical field, particularly a kind of sand-flushing well-cleaning agent for oil well and preparation method thereof.
Background technology
Along with going deep into of oil-field development, the part sand production in oil is serious, and the interval certain hour just need to carry out the sand washing operation.Oil field, on the well-flushing sand washing process, all adopted sewage to carry out in the past, the problem that oil reservoir, sand washing are thorough but the flushing fluid existed in the sand washing process bleeds, sand setting returns to oil reservoir.
Japanese plum is attained oil well Study on sand cleaning out device by negative pressure one literary composition that is published on 03 phase in 2004 " oil field equipment " and is returned to the problem of oil reservoir for bleed oil reservoir and sand setting of the flushing fluid existed in normal sand washing process; designed a kind of sand cleaning out device by negative pressure; use this device original sand washing can be become and take out sand; make bottomhole wellbore pressure be less than all the time sand pressure, reach the purpose of protection oil reservoir in the sand washing process.Article has carried out theoretical analysis to this device, has provided basic method of calculation.
Li Shengbiao be published in the research of heavy oil wells lost circulation prevention sand-flushing pipe column on the 01st phase in 2004 " petroleum geology and engineering " and application one literary composition introduce Heavy Oil in Henan Oilfield have bury shallow, the reservoir loose cementation, poor diagenetic grade, the characteristics that the shale index ratio is large, in the injection of steam stimulation, adopt by force under condition, the mutual variation of near wellbore formation experience High Temperature High Pressure stimulates, and adds that viscosity of thickened oil is large, kick and prop-carrying capacity are strong, cause oil well to shake out in various degree.Thick oil thermal extraction enters the high cycle and handles up after the production phase in addition, the reservoir pressure fall is large, producing energy can not be supplemented, cause stratum in debt serious, reservoir pressure is lower than the well liquid column pressure, during sand washing, liquid can not return pit shaft and maybe sand can't be gone out to ground, causes oil well normally to produce, and therefore solving heavy crude heat extraction absorption well sand flushing problem has arrived instant stage.
Shao Guolin is published in aerated fluid sand-flushing technique on the 1st phase in 2008 " oil and gas journal " the geologic development characteristics of a literary composition for Gudong field of applying at Gudong field, by the characteristic research to aerated fluid, explored aerated fluid sand-flushing technique; By the design to oil producing operation construction middle part division technique and perfect, make this technique obtain effect preferably.The aerated fluid technology can solve many produce difficult points that oil reservoir is produced the later stage better, and can create sizable economic benefit.
Summary of the invention
The objective of the invention is: a kind of sand-flushing well-cleaning agent for oil well is provided, can realizes the oil well sand washing well-flushing, utilize stratum air pressure and well-flushing to inject the equal fine foam that pressure reduction produces, fluid density is reduced, liquid level rises, and increases discharge opeing ability and carrying capacity, the low oil well sand washing for pressure factor.
The technical solution used in the present invention is: sand-flushing well-cleaning agent for oil well, and each component of employing comprises:
1, nonylphenol polyoxyethylene ether sulfate, another name: tensio-active agent NPES; Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, the 173rd page, Chemical Industry Press;
Character: amber transparent liquid, water-soluble, foam is abundant, and the good decontamination performance of deoiling is arranged, little to skin irritation.Purposes: as detergent and emulsifying agent, be widely used in liquid washing agent, hard surface detergent.Industrial for textile auxiliary agent, the aspects such as letex polymerization.Production unit: Beijing Daily-use Chenmical Inst., Liaoning Prov. Chemical Industry Inst..
2, fatty monoethanol amide polyoxyethylene ether sulfate, another name, amide ether sulfate; The 173rd page of Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, Chemical Industry Press;
Character: product toxicity is low, readily biodegradable, and foam stabilization and abundant, dispersion of calcium soap is strong.Purposes: wash and multiple household chemicals for shampoo, meal, particularly be used in " two-in-one " articles for washing performance better.Because this product can directly and positively charged ion is composite produce salt, and synergistic effect is arranged, can improve foaming power, hair is had to opsonization.Can be used as additive and emulsifying agent etc. in industrial circle.Production unit: China Daily Chemical Industry Research Institute.
3, alkylphenol-polyethenoxy (10) ether sodium sulfate; The 174th page of Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, Chemical Industry Press;
Character: amber transparent liquid, good stability, foam is abundant, and good washing, decontamination and degreasing performance are arranged.Low toxicity is little to skin irritation.Purposes: can make washing composition, emulsifying agent etc., for hard surface cleaner, liquid washing agent and textile auxiliary agent etc.
4, alkylphenol polyoxyethylene carboxylate salt, name: APEC; The 181st page of Huang Hongzhou chief editor's Chinese tensio-active agent overview one book, Chemical Industry Press;
Character: light yellow transparent liquid, there is lower surface tension, higher foam power, seepage force and detersive power, be good tensio-active agent, also can with cats product or polymkeric substance compatibility.There is good anti-hard water and dispersiveness.Purposes: good permeate agent and detergent raw material.
5, bicarbonate of ammonia.
6, water.
Each weight percentages of components of sand-flushing well-cleaning agent for oil well is:
1, nonylphenol polyoxyethylene ether sulfate, another name: tensio-active agent NPES:12.5～13.5%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.5～7.0%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.5～11.0%;
4, alkylphenol polyoxyethylene carboxylate salt, another name: APEC:5.5～6.0%;
5, bicarbonate of ammonia: 4.5～5.0%;
6, all the other are water.
The production method of sand-flushing well-cleaning agent for oil well
Major equipment: the enamel reaction still with 2000L of stirring, heating, refrigerating function.
Production method: at first, nonylphenol polyoxyethylene ether sulfate, fatty monoethanol amide polyoxyethylene ether sulfate, base phenol polyethenoxy (10) ether sodium sulfate, alkylphenol polyoxyethylene carboxylate salt, etc. four kinds of raw materials add by weight enamel reaction still.Slowly be warmed up to 65～75 ℃.Secondly, under constantly stirring, first add and should add 10% of the water yield, continue stirring and within 60 minutes, stop heating, stir on cooling limit, limit, cooling and be stirred to normal temperature, then add bicarbonate of ammonia, the limit edged stirs, then add remaining water, stir 30 minutes, obtain sand-flushing well-cleaning agent for oil well.
The using method of summary sand-flushing well-cleaning agent for oil well during the sand washing construction, adds 0.5～1.0% sand-flushing well-cleaning agent for oil well in water, obtains sand-flushing liquid, then utilizes sand-flushing liquid to carry out normal sand washing construction.Field technician and operator are familiar with this work.
Beneficial effect of the present invention: add sand-flushing well-cleaning agent for oil well of the present invention in water, obtain sand-flushing liquid, the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 0.5～1.0%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 50～73%.
Embodiment
Embodiment 1: sand-flushing well-cleaning agent for oil well, and each weight percentages of components is:
1, nonylphenol polyoxyethylene ether sulfate: 12.5%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.5%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 11.0%;
4, alkylphenol polyoxyethylene carboxylate salt: 6.0%;
5, bicarbonate of ammonia: 4.5%;
6, water is 59.5%.
The production method of sand-flushing well-cleaning agent for oil well: major equipment: the enamel reaction still with 2000L of stirring, heating, refrigerating function.
At first, nonylphenol polyoxyethylene ether sulfate, fatty monoethanol amide polyoxyethylene ether sulfate, base phenol polyethenoxy (10) ether sodium sulfate, alkylphenol polyoxyethylene carboxylate salt, etc. four kinds of raw materials add by weight enamel reaction still.Slowly be warmed up to 70 ℃.Secondly, under constantly stirring, first add and should add 10% of the water yield, continue stirring and within 60 minutes, stop heating, stir on cooling limit, limit, cooling and be stirred to normal temperature, then add bicarbonate of ammonia, the limit edged stirs, then add remaining water, stir 30 minutes, obtain sand-flushing well-cleaning agent for oil well.Result of use: in the water in well site, add embodiment 1 sand-flushing well-cleaning agent for oil well to obtain sand-flushing liquid, the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 0.6%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 52%.
Embodiment 2: sand-flushing well-cleaning agent for oil well, and each weight percentages of components is:
1, nonylphenol polyoxyethylene ether sulfate: 12.7%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.6%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.8%;
4, alkylphenol polyoxyethylene carboxylate salt: 5.9%;
5, bicarbonate of ammonia: 4.6%;
6, water is 59.4%.
The sand-flushing well-cleaning agent for oil well production method of embodiment 2 is identical with embodiment 1.Result of use: in the water of sending here at water tanker, add sand-flushing well-cleaning agent for oil well to obtain sand-flushing liquid, the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 0.8%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 70%.
Embodiment 3: sand-flushing well-cleaning agent for oil well, and each weight percentages of components is:
1, nonylphenol polyoxyethylene ether sulfate: 12.9%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.7%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.7%;
4, alkylphenol polyoxyethylene carboxylate salt: 5.8%;
5, bicarbonate of ammonia: 4.7%;
6, water is 59.2%.
The sand-flushing well-cleaning agent for oil well production method of embodiment 3 is identical with embodiment 1.Result of use: the well around well site is stamped in next water and is added sand-flushing well-cleaning agent for oil well to obtain sand-flushing liquid, and the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 0.7%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 63%.
Embodiment 4: sand-flushing well-cleaning agent for oil well, and each weight percentages of components is:
1, nonylphenol polyoxyethylene ether sulfate: 13.2%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.8%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.6%;
4, alkylphenol polyoxyethylene carboxylate salt: 5.7%;
5, bicarbonate of ammonia: 4.8%;
6, water is 58.9%.
The sand-flushing well-cleaning agent for oil well production method of embodiment 4 is identical with embodiment 1.Result of use: in water, add sand-flushing well-cleaning agent for oil well of the present invention to obtain sand-flushing liquid, the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 1.0%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 65%.
Embodiment 5: sand-flushing well-cleaning agent for oil well, and each weight percentages of components is:
1, nonylphenol polyoxyethylene ether sulfate: 13.5%;
2, fatty monoethanol amide polyoxyethylene ether sulfate: 6.9%;
3, alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.5%;
4, alkylphenol polyoxyethylene carboxylate salt: 5.5%;
5, bicarbonate of ammonia: 4.9%;
6, water is 58.7%.
The sand-flushing well-cleaning agent for oil well production method of embodiment 5 is identical with embodiment 1.Result of use: in water, add sand-flushing well-cleaning agent for oil well of the present invention to obtain sand-flushing liquid, the concentration of sand-flushing well-cleaning agent for oil well in sand-flushing liquid is 0.8%.Utilize this sand-flushing liquid to carry out the sand-flushing construction, improve sand washing efficiency 70%.
Claims (2)
1. a sand-flushing well-cleaning agent for oil well, it is characterized in that: each weight percentages of components is:
Nonylphenol polyoxyethylene ether sulfate: 12.5～13.5%;
Fatty monoethanol amide polyoxyethylene ether sulfate: 6.5～7.0%;
Alkylphenol-polyethenoxy (10) ether sodium sulfate: 10.5～11.0%;
Alkylphenol polyoxyethylene carboxylate salt: 5.5～6.0%;
Bicarbonate of ammonia: 4.5～5.0%;
All the other are water.
2. sand-flushing well-cleaning agent for oil well according to claim 1, it is characterized in that: production method is: at first, nonylphenol polyoxyethylene ether sulfate, fatty monoethanol amide polyoxyethylene ether sulfate, alkylphenol-polyethenoxy (10) ether sodium sulfate, alkylphenol polyoxyethylene carboxylate salt, etc. four kinds of raw materials add by weight enamel reaction still, slowly be warmed up to 65～75 ℃; Secondly, under constantly stirring, first add and should add 10% of the water yield, continue stirring and within 60 minutes, stop heating, stir on cooling limit, limit, cooling and be stirred to normal temperature, then add bicarbonate of ammonia, the limit edged stirs, then add remaining water, stir 30 minutes, obtain sand-flushing well-cleaning agent for oil well.
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| CN2011104018693A CN102399545B (en) | 2011-12-06 | 2011-12-06 | Sand-flushing well-cleaning agent for oil well |
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| CN2011104018693A CN102399545B (en) | 2011-12-06 | 2011-12-06 | Sand-flushing well-cleaning agent for oil well |
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| CN102399545B true CN102399545B (en) | 2013-12-04 |
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Families Citing this family (5)
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| CN102703046B (en) * | 2012-06-13 | 2013-11-06 | 中国石油天然气股份有限公司 | Condensed sand carrying agent used for under-pressure oil gas well |
| CN103589412B (en) * | 2013-11-06 | 2017-10-17 | 长江大学 | A kind of shale gas develops oil base drilling fluid mud cake cleaning fluid |
| CN104910885B (en) * | 2015-04-21 | 2017-09-12 | 成都欧美克石油科技股份有限公司 | Anionic and nonionic composite highly effective flushing liquor and preparation method thereof |
| CN110846013A (en) * | 2019-11-26 | 2020-02-28 | 西安建筑科技大学 | Well cementation flushing fluid for oil-based drilling fluid and preparation and application methods thereof |
| CN111961457B (en) * | 2020-08-05 | 2022-05-24 | 德仕能源科技集团股份有限公司 | Oil displacement complexing agent for heavy oil reservoir and preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3411580A (en) * | 1966-09-28 | 1968-11-19 | Byron Jackson Inc | Mud removal method |
| US5058678A (en) * | 1990-09-28 | 1991-10-22 | Halliburton Company | Method for preventing the formation of sludge in crude oil |
| US5084192A (en) * | 1990-09-28 | 1992-01-28 | Halliburton Company | Method and composition for preventing the formation of sludge in crude oil |
| CN101074362A (en) * | 2007-06-20 | 2007-11-21 | 中国石油天然气股份有限公司 | Non-pollution well detergent |
| CN101544884A (en) * | 2009-05-07 | 2009-09-30 | 中国石油天然气股份有限公司 | Foam washing fluid and preparation method thereof |
| EP1190754B1 (en) * | 2000-09-15 | 2010-02-10 | Institut Francais Du Petrole | Demulsifying formulation based on oil and use thereof for the treatment of oil drill drains containing oil slurry |
| CN102020981A (en) * | 2010-10-27 | 2011-04-20 | 山东大学 | Temperature-resistant, salt-resistant and low-tension foam flooding agent and preparation method thereof |
-
2011
- 2011-12-06 CN CN2011104018693A patent/CN102399545B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3411580A (en) * | 1966-09-28 | 1968-11-19 | Byron Jackson Inc | Mud removal method |
| US5058678A (en) * | 1990-09-28 | 1991-10-22 | Halliburton Company | Method for preventing the formation of sludge in crude oil |
| US5084192A (en) * | 1990-09-28 | 1992-01-28 | Halliburton Company | Method and composition for preventing the formation of sludge in crude oil |
| EP1190754B1 (en) * | 2000-09-15 | 2010-02-10 | Institut Francais Du Petrole | Demulsifying formulation based on oil and use thereof for the treatment of oil drill drains containing oil slurry |
| CN101074362A (en) * | 2007-06-20 | 2007-11-21 | 中国石油天然气股份有限公司 | Non-pollution well detergent |
| CN101544884A (en) * | 2009-05-07 | 2009-09-30 | 中国石油天然气股份有限公司 | Foam washing fluid and preparation method thereof |
| CN102020981A (en) * | 2010-10-27 | 2011-04-20 | 山东大学 | Temperature-resistant, salt-resistant and low-tension foam flooding agent and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| 付亚荣等.无污染洗井液的研究与应用.《石油钻探技术》.2009,第37卷(第06期), |
| 姚晓，曾莉，陈远东，诸林.YZ－2型化学冲洗液的室内研究.《油田化学》.1995,第12卷(第01期), * |
| 无污染洗井液的研究与应用;付亚荣等;《石油钻探技术》;20091130;第37卷(第06期);91-93 * |
| 表面活性剂在煤矿化学洗井中的应用;郭廷翘等;《日用化学工业》;19990620(第03期);53-55 * |
| 郭廷翘等.表面活性剂在煤矿化学洗井中的应用.《日用化学工业》.1999,(第03期), |
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