CN102796506B - Ampholytic surfactant fracturing fluid - Google Patents
Ampholytic surfactant fracturing fluid Download PDFInfo
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- CN102796506B CN102796506B CN201110137036.0A CN201110137036A CN102796506B CN 102796506 B CN102796506 B CN 102796506B CN 201110137036 A CN201110137036 A CN 201110137036A CN 102796506 B CN102796506 B CN 102796506B
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Abstract
The invention relates to an ampholytic surfactant fracturing fluid which comprises a solution A and a solution B, wherein the solution A comprises the following components in parts by weight: 3-5 parts of acid thickener, 0.4-0.6 part of crosslinking agent, 0.4-0.6 part of gel breaker and 93.8-96.2 parts of hydrochloric acid (1-12%); the solution B comprises the following components in parts by weight: 4-6 parts of crosslinking agent and 94-96 parts of water; the solution A and the solution B are mixed in a weight ratio of 100: (8-12); the thickener is prepared from didodecanoyl-propyl-dimethyl betaine and oleoyl-propyl-dimethyl betaine which are uniformly mixed in a weight ratio of 1:1; the crosslinking agent is sodium dodecyl benzene sulfonate; and the gel breaker is lauryl sodium sulfate encapsulated with rosin. The fracturing fluid can be continuously sheared for 90 min within 170s<-1>, the viscosity is persistently stabilized at about 50 mPa.s, and a sand carrying effect can be achieved; and because the gel breaker is lauryl sodium sulfate encapsulated with rosin, the fluid is subjected to gel breaking thoroughly, and the viscosity is less than 5.0 mPa.s.
Description
Technical field:
Crosslinked amphoterics fracturing liquid under the strong acidic condition that the present invention relates to use in a kind of applicable Oil in Super-low Permeability hydrocarbon zone oil well or gasser fracturing yield increasing technique.
Background technology:
At present, Oil in Super-low Permeability hydrocarbon zone reservoir properties is poor, and rate of permeation is low, and pore throat is trickle, and face rate is low, and per-well production is low, but acid soluble mineral content is generally higher.Conventional guanidine gum fracturing fluid is difficult to return eject after height is pressed into, system residue content is higher, the flow conductivity of fracture easily causes permanent injury, acid surface active agent fracturing liquid is without residue, the acid soluble mineral of acid in system in can corrosion reservoir further improves reservoir permeability and further improves per-well production, but present acid surface active agent fracturing liquid performance is not too perfect: the system having can realize thickening under higher concentration acid (acid concentration is greater than 10%) condition and take sand, but what host adopted is cats product, because reservoir sandstone surface is generally electronegative, cats product often adsorptive capacity is large, the row's of returning difficulty and injury are larger, what some system host adopted is anion surfactant, and the row of returning is thorough, injure little, still can not thickening in sour environment, or can only realize thickening at lower concentration acid environment (concentration of hydrochloric acid 1-3%) and take sand.
Summary of the invention:
The object of the present invention is to provide in a kind of applicable Oil in Super-low Permeability hydrocarbon zone oil well or gasser fracturing yield increasing technique, use can be crosslinked under strong acidic condition amphoterics fracturing liquid.
Crosslinked amphoterics fracturing liquid under a kind of strong acidic condition of the present invention is the mixture with following composition and weight part:
A solution:
B solution:
4～6 parts of linking agents
94～96 parts, clear water
Described acid surface active agent fracturing liquid mixes taking volume ratio solution A, solution B as 100: 8～12 ratio, make acid surface active agent fracturing liquid.
Described acid surface active agent fracturing fluid thickener is two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine, and part by weight mixes at 1: 1.
Described linking agent is Sodium dodecylbenzene sulfonate.
Described gel breaker host material is sodium lauryl sulphate, after industrial emulsion is sealed, for diameter is at the circular granular of 500 microns of left and right.
Described industrial emulsion is rosin.
The of the fracturing fluid host of acid surface active agent of the present invention is that a kind of thickening material is two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine; this thickening material is two kinds of amphotericses; linking agent is Sodium dodecylbenzene sulfonate; mix and can in the hydrochloric acid of 1%-12%, realize thickening by a certain percentage, at 170s
-1shear continuously 90min, viscosity in 50mPa.s left and right, can realize and take sand continually and steadily.Gel breaker is the sodium lauryl sulphate of rosin parcel, and breaking glue solution is thorough, and viscosity is less than 5.0mPa.s.
The present invention is in the technical innovation of carrying out three aspects: of fracturing liquid.
1, New stablization
The present invention can be crosslinked under strong acidic condition the of the fracturing fluid host of the amphoterics thickening material that is a kind of new research and development, this thickening material is two kinds of zwitterionicss, this viscosifying agent is little in sandstone surface adsorptive capacity.
2, novel crosslinker
The present invention is directed to zwitterionics feature, researched and developed novel crosslinker.
3, the domestic concentration of hydrochloric acid of having realized is first greater than the crosslinked sand of taking under 10% condition.
Embodiment:
Crosslinked amphoterics fracturing liquid under described strong acidic condition is the mixture with following composition and weight part:
B solution:
4～6 parts of linking agents
94～96 parts, clear water
Described acid surface active agent fracturing liquid mixes taking volume ratio solution A, solution B as 100: 8～12 ratio, make acid surface active agent fracturing liquid.
Described acid surface active agent fracturing fluid thickener is two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine, and part by weight mixes at 1: 1.
Described linking agent is Sodium dodecylbenzene sulfonate.
Described gel breaker host material is sodium lauryl sulphate, after industrial emulsion is sealed, for diameter is at the circular granular of 500 microns of left and right.
Described industrial emulsion is rosin.
Embodiment 1:
At the scene two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine are mixed to formation acid surface active agent fracturing fluid thickener for 1: 1 by weight proportion.30m
3in acid tank, adding weight concentration by recipe ratio is 10% hydrochloric acid, in the situation that circulating with pump, slowly add 1500kg acid surface active agent fracturing fluid thickener, then add Sodium dodecylbenzene sulfonate, Sodium dodecylbenzene sulfonate after industrial emulsion is sealed by formula, continue circulation 10 minutes, in working cycle, liquid is filled, continue 20 minutes so that liquid mixing is abundant, form solution A.30m
3in tank, add 25m
3clear water, in the situation that circulating with pump, slowly adds 1500kg Sodium dodecylbenzene sulfonate, continues circulation 10 minutes, makes to mix fully, forms solution B.
When pressing crack construction, by solution A with solution B by 100 liters: the volume ratio of 12 liters is mixed and is formed acid amophoteric surface active fracturing liquid.
Embodiment 2:
At the scene two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine are mixed to formation acid surface active agent fracturing fluid thickener for 1: 1 by weight proportion.30m
3in acid tank, adding weight concentration by recipe ratio is 6% hydrochloric acid, in the situation that circulating with pump, slowly add 1200kg acid surface active agent fracturing fluid thickener, then add Sodium dodecylbenzene sulfonate, Sodium dodecylbenzene sulfonate after industrial emulsion is sealed by formula, continue circulation 10 minutes, in working cycle, liquid is filled, continue 20 minutes so that liquid mixing is abundant, form solution A.30m
3in tank, add the clear water of proportioning, in the situation that circulating with pump, slowly add 1200kg Sodium dodecylbenzene sulfonate, make to mix fully, form solution B.
When pressing crack construction, by solution A with solution B by 100 liters: the volume ratio of 8 liters is mixed and is formed acid amophoteric surface active fracturing liquid.
Claims (1)
1. an amphoterics fracturing liquid, is characterized in that: be the mixture with following composition and weight part:
A solution:
B solution:
4～6 parts of linking agents
94～96 parts, clear water
Solution A, solution B are mixed as 100: 8～12 ratio taking volume ratio, make acid surface active agent fracturing liquid;
Described acidic thickener is two lauroyl propyl-dimethyl trimethyl-glycines and oleoyl propyl-dimethyl trimethyl-glycine, and part by weight mixes at 1: 1;
Described linking agent is Sodium dodecylbenzene sulfonate;
Described gel breaker is sodium lauryl sulphate, after industrial emulsion is sealed, for diameter is at the circular granular of 500 microns;
Described industrial emulsion is rosin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137036.0A CN102796506B (en) | 2011-05-25 | 2011-05-25 | Ampholytic surfactant fracturing fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110137036.0A CN102796506B (en) | 2011-05-25 | 2011-05-25 | Ampholytic surfactant fracturing fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102796506A CN102796506A (en) | 2012-11-28 |
| CN102796506B true CN102796506B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110137036.0A Active CN102796506B (en) | 2011-05-25 | 2011-05-25 | Ampholytic surfactant fracturing fluid |
Country Status (1)
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103498655B (en) * | 2013-09-05 | 2016-05-18 | 延长油田股份有限公司 | Micro mist sand fracturing process |
| US20170306152A1 (en) * | 2016-04-22 | 2017-10-26 | Icl Performance Products Lp | Multifunctional Additives |
| CN107828404A (en) * | 2017-11-20 | 2018-03-23 | 中国石油天然气股份有限公司 | A kind of fracturing fluid for matching somebody with somebody liquid for oil field high salinity recovered water |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664048A (en) * | 2005-02-05 | 2005-09-07 | 大庆油田有限责任公司 | Fracturing working liquid for container rock containing travertine |
| CN101724387A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
-
2011
- 2011-05-25 CN CN201110137036.0A patent/CN102796506B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1664048A (en) * | 2005-02-05 | 2005-09-07 | 大庆油田有限责任公司 | Fracturing working liquid for container rock containing travertine |
| CN101724387A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Polyhydroxy-alcohol fracturing fluid |
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| Publication number | Publication date |
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| CN102796506A (en) | 2012-11-28 |
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