CN1313562C - High performance cleanup additive for oil and gas well and method for making same - Google Patents
High performance cleanup additive for oil and gas well and method for making same Download PDFInfo
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- CN1313562C CN1313562C CNB2004100262570A CN200410026257A CN1313562C CN 1313562 C CN1313562 C CN 1313562C CN B2004100262570 A CNB2004100262570 A CN B2004100262570A CN 200410026257 A CN200410026257 A CN 200410026257A CN 1313562 C CN1313562 C CN 1313562C
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- cleanup additive
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Abstract
The present invention relates to a high efficient cleanup additive for oil and gas wells and a preparation method thereof. The surface tension of working liquid, and the tension of an interface of oil and water can be obviously reduced, the return and discharge speed of the working liquid is enhanced, and the high efficient cleanup additive has a high efficient discharge assisting function. The high efficient cleanup additive can be widely applied to the operation of the fracture, the acidification, the dredging, etc. of the oil and gas wells. The present invention comprises the following operation steps: firstly, 25% to 35% of anion of a main agent and 35% to 45% of nonionic surface active agent are heated to 50 DEG C to 90 DEG C at normal pressure to be mixed to react for 3 hours; secondly, 20% to 25% of anionic surface active agent of an auxiliary agent is added into the main agent after being sufficiently and uniformly dissolved by alcohol; thirdly, 5% to 10% of other auxiliary agent is added after being stirred to be uniformly mixed; finally, the auxiliary agent and the main agent are stirred to be uniformly mixed again, and preparation is finished.
Description
One, technical field:
The present invention relates to a kind of oil gas well used additives, especially relate to efficient cleanup additive of a kind of oil gas well and preparation method thereof.
Two, background technology:
When being mainly used in well fracturing acidifying, de-plugging, reduces oil gas well cleanup additive working liquid surface tension and oil water interfacial tension, the common handled working liquid surface tension of existing oil gas well cleanup additive reaches about 30mN/m, oil water interfacial tension reaches 5mN/m, can not thoroughly solve working liquid surface tension and the higher essential problem of oil water interfacial tension.
Three, summary of the invention:
The present invention is in order to solve the weak point in the above-mentioned background technology, efficient cleanup additive of a kind of oil gas well and preparation method thereof is provided, it can significantly reduce working liquid surface tension and oil water interfacial tension, improve the liquid discharge speed, play the efficiently effect of the row of helping, can be widely used in operations such as well fracturing, acidifying, de-plugging.
For achieving the above object, the technical solution used in the present invention is:
The efficient cleanup additive of a kind of oil gas well, its special character is: comprise nonionogenic tenside (35%-45%) as host, negatively charged ion (25%-35%) and as anion surfactant (20%-25%) and other auxiliary agent (5%-10%) of assistant agent.
Above-mentioned ionic surfactant pack is drawn together sulfonate series.
Above-mentioned negatively charged ion comprises sulfonate series.
Above-mentioned anion surfactant comprises fluorine series.
Above-mentioned other auxiliary agent comprises alcohols.
The making method of the efficient cleanup additive of a kind of oil gas well, its special character is to comprise following operation steps: earlier with host negatively charged ion (25%-35%), nonionogenic tenside (35%-45%) under normal pressure, be heated to 50 ℃ of-90 ℃ of hybrid reaction 3h, join in the host again after fully dissolving evenly with alcohols assistant agent anion surfactant (20%-25%) then, add other auxiliary agent (5%-10%) after mixing again, mix once more, preparation is finished.
Compared with prior art, the advantage and the effect that have of the present invention is as follows:
1, the handled working level surface tension of the present invention is reduced to 23mN/m even lower, can reach 18mN/m, and oil water interfacial tension reaches 1 * 10
-3MN/m, ultra low interfacial tension can reach the purpose of remarkable reduction surface tension and oil water interfacial tension, improve the liquid discharge speed, reach the efficiently effect of the row of helping.
2, the present invention has good wettability to oil reservoir, greatly reduce of the fracturing fluid surface tension and oil water interfacial tension, reduce the liquid inhibition effect, help the of the fracturing fluid row of returning rapidly, reduce residual quantity and the residence time of fracturing liquid in oil reservoir, thereby reduce injury, increase fissured flow conductivity oil reservoir, improve the effect of transforming oil reservoir, reach and increase production purpose preferably.The present invention simultaneously has the nonionogenic tenside feature, and surface tension is low, and Heat stability is good is easy to use, and the characteristics good with other additive compatibility also are widely used in technological operations such as acidifying, de-plugging, the displacement of reservoir oil except that being used for pressure break;
3, to have surface tension low in the present invention, wettability is good, the thermostability height, characteristics such as the row's of helping ability is strong, consumption is few, interpolation can significantly alleviate the injury to oil reservoir in pressure break, acidification liquid, improve the effect of transforming oil reservoir, the row of helping to various working fluids in low pressure, the low permeability layer transformation process has more the irreplaceable effect of other products especially;
4, the present invention both can be used for the high temperature deep well stratum, also can be used for low hot-well stratum; Both can with acidifying, the supporting application of fracturing technology, improve flowback effect, also can be used for the hydrocarbon zone transformation separately, the eliminating layer internal contamination, obvious effect of increasing production, can be widely used in the working fluids such as pressure liquid, acid solution, water blockoff spearhead, flushing fluid, well control fluid and perforating fluid, significance be arranged for the economic benefit that improves oil gas well yield and oil-gas field.
Four, embodiment:
Embodiment one:
Host negatively charged ion (28%), nonionogenic tenside (42%) are heated to 60 ℃ under normal pressure, hybrid reaction 3h, add in the host with dissolve with ethanol again after evenly assistant agent anion surfactant (22%) then, add other auxiliary agent (8%) after mixing again, mix once more, preparation is finished.
Embodiment two:
Host negatively charged ion (33%), nonionogenic tenside (37%) are heated to 70 ℃ under normal pressure, hybrid reaction 3h, add in the host with dissolve with ethanol again after evenly assistant agent anion surfactant (25%) then, add other auxiliary agent (5%) after mixing again, mix once more, preparation is finished.
Quality index:
| Project | Quality index |
| Outward appearance | Normal temperature is the black even fluid down |
| Density (g/cm3) | 1.1-1.2 |
| PH value (1%) | 7-10 |
| Solvability | Soluble in water |
| Compatibleness | Well |
| Anionic Active content % | ≥30 |
| Surface tension (mN/m) | 23-18 |
| Interfacial tension (mN/m) | ≤1.0×10 -3 |
Claims (2)
1, the efficient cleanup additive of a kind of oil gas well, it is characterized in that: comprise nonionogenic tenside (35%-45%) as host, negatively charged ion (25%-35%) and as anion surfactant (20%-25%) and other auxiliary agent (5%-10%) of assistant agent, ionic surfactant pack is drawn together sulfonate series, negatively charged ion comprises sulfonate series, anion surfactant comprises fluorine series, and other auxiliary agent comprises alcohols.
2, the making method of the efficient cleanup additive of a kind of oil gas well, it is characterized in that comprising following operation steps: earlier with host negatively charged ion (25%-35%), nonionogenic tenside (35%-45%) under normal pressure, be heated to 60 ℃ of hybrid reaction 3h, join in the host again after fully dissolving evenly with alcohols assistant agent anion surfactant (20%-25%) then, add other auxiliary agent (5%-10%) after mixing again, mix once more, preparation is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262570A CN1313562C (en) | 2004-06-22 | 2004-06-22 | High performance cleanup additive for oil and gas well and method for making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100262570A CN1313562C (en) | 2004-06-22 | 2004-06-22 | High performance cleanup additive for oil and gas well and method for making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1594492A CN1594492A (en) | 2005-03-16 |
| CN1313562C true CN1313562C (en) | 2007-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100262570A Expired - Fee Related CN1313562C (en) | 2004-06-22 | 2004-06-22 | High performance cleanup additive for oil and gas well and method for making same |
Country Status (1)
| Country | Link |
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| CN (1) | CN1313562C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100358969C (en) * | 2005-10-18 | 2008-01-02 | 中国石油大学(华东) | Cleanup additive in use for acidification in high temperature |
| CN101781553B (en) * | 2010-02-05 | 2012-12-12 | 西安科技大学 | Active fracturing reagent for softening coal rock |
| CN102533243B (en) * | 2010-12-10 | 2014-04-02 | 中国石油化工股份有限公司 | Fracture acidizing cleanup additive of fluorine-containing carbon chain Gemini surfactant and preparation method thereof |
| CN102295919B (en) * | 2011-05-30 | 2012-09-12 | 西南石油大学 | Fluoride-free cleanup additive used for acidifying |
| CN105694840B (en) * | 2016-04-21 | 2018-10-16 | 中国石油大学(华东) | A kind of fluorine-containing cleanup additive of pressure break |
| CN107120103B (en) * | 2017-05-17 | 2019-09-20 | 成都百联油田技术服务有限公司 | A kind of fracture acidizing cleanup additive |
| CN109233788B (en) * | 2018-10-31 | 2021-09-10 | 重庆地质矿产研究院 | Nano-emulsion cleanup additive for unconventional gas reservoir fracturing and preparation method thereof |
| CN113004883A (en) * | 2021-03-22 | 2021-06-22 | 郑州市新郑梅久实业有限公司 | Cleanup additive for fracturing and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209447A (en) * | 1998-09-07 | 1999-03-03 | 北京华能地学高技术联合公司 | Formula of series surfactant and producing method thereof |
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2004
- 2004-06-22 CN CNB2004100262570A patent/CN1313562C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1209447A (en) * | 1998-09-07 | 1999-03-03 | 北京华能地学高技术联合公司 | Formula of series surfactant and producing method thereof |
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| Publication number | Publication date |
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| CN1594492A (en) | 2005-03-16 |
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