CN103937483A - Guar gum cleaning fracturing fluid and its preparation method and application - Google Patents
Guar gum cleaning fracturing fluid and its preparation method and application Download PDFInfo
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- CN103937483A CN103937483A CN201410103743.1A CN201410103743A CN103937483A CN 103937483 A CN103937483 A CN 103937483A CN 201410103743 A CN201410103743 A CN 201410103743A CN 103937483 A CN103937483 A CN 103937483A
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- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
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- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/605—Compositions for stimulating production by acting on the underground formation containing biocides
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/665—Compositions based on water or polar solvents containing inorganic compounds
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- C09K8/86—Compositions based on water or polar solvents containing organic compounds
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- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
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- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
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- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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Abstract
The invention discloses a guar gum cleaning fracturing fluid and its preparation method and application, and the guar gum cleaning fracturing fluid includes 0.2-0.3% of guar gum and a modified product, 0.05-0.5% of a cleanup additive, 0.05-0.5% of an anti swelling agent or a clay stabilizer, 0.01-0.15% of a vegetable gum preservative or a bactericidal agent, 0.02-0.15% of a fracturing fluid demulsifier, 0-2% of potassium chloride, 0.2-0.6% of a fracturing fluid cross-linking gel breaking agent and 95.8-99.47% of water. The guar gum cleaning fracturing fluid has the advantages that: after 3 hours, a ping viscometer is used for testing, the viscosity is less than 5mpa.s, the gel breaking liquid residue is less than 60mg / L, the damage to stratum caused by incomplete gel breaking or residues can be prevented, the guar gum cleaning fracturing fluid is far better in requirements of a viscoelastic fracturing fluid and a guar gum fracturing fluid on the residues, and can meet the cleaning fracturing fluid requirement, and no related patents and documents are reported in China.
Description
Technical field
The present invention relates to a kind of melon glue clean fracturing fluid and its preparation method and application, belong to oilfield chemistry fracturing liquid field.
Background technology
Viscosifying agent melon glue or modifyed guar gum that guar gum fracturing fluid uses, " pressure break for vegetable jelly current techique require " (SY/T5764-2007) in regulation seconds melon glue or hydroxypropyl guar gum water-insoluble be not more than respectively 20% and 8%, the method that solves the insoluble object height of melon glue is substantially all to be undertaken by modification, is the main source of fracturing fluid residue; " requirement of fracturing liquid current techique " (SY/T6376-2008) regulation fracturing liquid rubber-breaking liquid residue high request is not more than 600mg/L, and Viscoelastic Surfactant-based Fracturing Fluid breaking glue solution residue is not more than 100mg/L.
Often there is the compatibleness problem of various products in cleanup additive, expansion-resisting agent or clay stabilizer, vegetable jelly sanitas or sterilant, emulsion splitter.
Summary of the invention
For solving the deficiency of existing guar gum fracturing fluid technology, the object of the present invention is to provide a kind of guar gum fracturing fluid and its preparation method and application, make it meet " requirement of fracturing liquid current techique " requirement (SY/T6376-2008), breaking glue solution residue high request is not more than 600mg/L, Viscoelastic Surfactant-based Fracturing Fluid breaking glue solution residue is not more than 100mg/L, reaches clean fracturing fluid condition and requirement.
In order to realize above-mentioned target, the present invention adopts following technical scheme:
Melon glue clean fracturing fluid, is made up of following mass percent formula,
The preparation method of melon glue clean fracturing fluid, comprises the steps:
(1) be added in the mixed tune of 2000ml device by the distilled water of the total mass 95.8-99.47% of melon glue clean fracturing fluid;
(2) open mixed device to the whirlpool occurring of adjusting and can see blade, to the mixed melon glue or the modifyed guar gum that slowly add 0.2-0.3% in device adjusted, reaction 10-30 minute, puts into 1000ml wide-necked bottle, is placed in 20-30 DEG C of water hydration swelling 45-90 minute;
(3) the melon sol solution after hydration swelling is poured into the mixed device of adjusting, after unlatching, add successively the cleanup additive of 0.05-0.5%, the clay stabilizer of 0.05-0.5% or expansion-resisting agent, 0.01-0.15% vegetable jelly sanitas or sterilant, 0.02-0.15 part % fracturing liquid non-emulsifier, 0-2% Repone K is poured mixed tune in device into and is mixed;
(4) open the mixed device of adjusting and occur that whirlpool can see blade, add 0.2-0.6% fracturing liquid be cross-linked gel breaker, the residue of its viscosity variation in 3 hours of test 20-80 degree scope and breaking glue solution, after 3 hours, its viscosity is less than 5mpa.s, and breaking glue solution residue is less than 60ppm.
Described melon glue and modified product are the one of melon glue, hydroxypropyl guar gum, carboxymethyl melon glue, are one-level or the seconds of market supply.
Described cleanup additive is the cleanup additive of Shanxi Petro-Chemical Design Inst.'s development, model HK101, and 0.3% distilled water solution surface tension is less than 28mN/m, and interfacial tension is less than 2mN/m.
Described expansion-resisting agent or clay stabilizer are expansion-resisting agent or the clay stabilizer of Shanxi Petro-Chemical Design Inst.'s development, model HK104, and wherein hydroxypropyl quaternary ammonium salt or choline chloride 60 content are more than 40%, and 1% distilled water solution is greater than 95% to the anti-swollen rate of sodium soil.
Described vegetable jelly sanitas or sterilant are vegetable jelly sanitas or the sterilant of Shanxi Petro-Chemical Design Inst.'s development, model HK104, wherein dodecyl benzyl dimethyl ammonium chloride content is more than 30%, and 48 hours melon gelatin viscosity rates of descent of 30 degree are less than 15%.
Described fracturing liquid emulsion splitter or non-emulsifier are vegetable jelly sanitas or the sterilant of Shanxi Petro-Chemical Design Inst.'s development, model HK105, and wherein polyethers emulsion splitter content is more than 30%, and demulsification efficiency or anti-emulsion rate are greater than more than 95%.
Described Repone K is market supply Russia Ural product, and potassium oxide content is more than 62%.
The HK8A product that the crosslinked gel breaker of described melon glue clean fracturing fluid is the research and development of Shaanxi petroleum chemical research designing institute, the product that it is made up of lower concentration melon rubber cross linker and gel breaker, wherein lower concentration melon rubber cross linker content is more than 40%, crosslinked sand and the broken glue taken that can realize guar gum fracturing fluid, breaking glue solution residue is less than 60ppm.
A kind of melon glue clean fracturing fluid is in the application of oil field fracturing fluid.
Usefulness of the present invention is:
(1) residue of realizing guar gum fracturing fluid is not more than 60mg/L, far below industry standard " requirement of fracturing liquid current techique " (SY/T6376-2008) breaking glue solution residue high request be not more than 600mg/L, Viscoelastic Surfactant-based Fracturing Fluid breaking glue solution residue is not more than 100mg/L, reaches clean fracturing fluid condition and requirement.
(2) to reach cross-linking effect good for melon glue clean fracturing fluid, and pressure break is taken sand stable performance, and broken glue is thorough, reasonable price, coexist the in a large number impact of salt of non-corrosiveness and not being subject to; The various compositions that contain in product complement one another, and can save the use of crosslinked tank car, and every well time direct saving is more than 2000 yuan.
(3) reduce fracturing liquid rubber-breaking residue, the most essential is and reduce its injury to stratum, the ratio clean fracturing fluid that especially can reduce the injury of low permeability formation is also low, thoroughly solve the high problem of guar gum fracturing fluid residue, can realize the low residue of guar gum fracturing fluid and reach the system cleaning and have not seen reported.
Embodiment
Below in conjunction with specific embodiment, the present invention is done to concrete introduction.
One, prepare melon glue clean fracturing fluid
1, raw material is prepared:
Embodiment 1
0.2% melon glue and modified product
0.3% cleanup additive
0.3% expansion-resisting agent or clay stabilizer
0.1% vegetable jelly sanitas or sterilant
0.15% fracturing liquid emulsion splitter
1% Repone K
97.65% water
0.3% fracturing liquid is cross-linked gel breaker
The preparation method of the crosslinked gel breaker of described melon glue clean fracturing fluid is as follows:
Linking agent is organic borate cross-linker or organic boron zirconium cross linking agent 50-80 part
Enzyme is mannase or superoxide-dismutase 0.1-5 part
Gel breaker is ammonium persulphate or the Potassium Persulphate 0-3 part of selling on market
Water 10-30 part
First, water is joined in reactor, be warming up to 30 DEG C, airtight nitrogen replacement air, control fracturing 0.1-0.3MPa; Then, turn on agitator slowly adds linking agent in reactor, reacts 30 minutes, is conducive to delayed cross-linking; Then, in reactor, slowly add gel breaker, react 30 minutes, be conducive to brokenly glue; Next, in reactor, add enzyme, react 3 hours, be conducive to the broken glue of low temperature.Finally detect discharging.The product of being produced by aforesaid method meets the requirement of industry standard.
Embodiment 2
0.25% melon glue and modified product 0.2% cleanup additive 0.5% expansion-resisting agent or clay stabilizer
0.05% vegetable jelly sanitas or sterilant 0.05% fracturing liquid emulsion splitter
0% Repone K 98.65% water 0.3% fracturing liquid is cross-linked gel breaker
Embodiment 3
0.3% melon glue and modified product 0.5% cleanup additive 0.3% expansion-resisting agent or clay stabilizer
0.15% vegetable jelly sanitas or sterilant 0.15% fracturing liquid emulsion splitter
2% Repone K 96.4% water 0.2% fracturing liquid is cross-linked gel breaker
Embodiment 4
0.2% melon glue and modified product 0.05% cleanup additive 0.5% expansion-resisting agent or clay stabilizer
0.1% vegetable jelly sanitas or sterilant 0.05% fracturing liquid emulsion splitter
0% Repone K 98.5% water 0.6% fracturing liquid is cross-linked gel breaker
Embodiment 5
0.30% melon glue and modified product 0.05% cleanup additive 0.5% expansion-resisting agent or clay stabilizer
0.1% vegetable jelly sanitas or sterilant 0.05% fracturing liquid emulsion splitter
0% Repone K 98.8% water 0.2% fracturing liquid is cross-linked gel breaker
2, preparation method:
(1) add water in the mixed tune of 2000ml device;
(2) open mixed device to the whirlpool occurring of adjusting and can see blade, slowly add melon glue or modifyed guar gum to mixed tune in device, react 10 minutes, put into 1000ml wide-necked bottle, be placed in 30 degree water hydration swelling 45-90 minute;
(3) the melon sol solution after hydration swelling is poured into mixed tune in device, after unlatching, added successively the cleanup additive of above-mentioned set amount, expansion-resisting agent or clay stabilizer, fracturing liquid emulsion splitter, vegetable jelly sanitas or sterilant, Repone K, mixes;
(4) open the mixed device of adjusting and occur that whirlpool can see blade, adjust in device with the crosslinked gel breaker (HK-8A) of melon glue clean fracturing fluid to mixed, there is micro-drum to fracturing liquid liquid level, test successively the residue of its viscosity variation in 3 hours of 20-80 degree scope and breaking glue solution, after 3 hours, its viscosity is less than 5mpa.s, and breaking glue solution residue is less than 60ppm.
Two, melon glue clean fracturing fluid application example
Melon glue clean fracturing fluid of the present invention is mainly used on oil field compression fracture.
Melon glue clean fracturing fluid in embodiment 1-5 is tested, and the test-results in laboratory is in table 1.
Table 1 fracturing liquid viscosity and broken glue residue
In sum, melon glue clean fracturing fluid of the present invention, after 3 hours, Yong Pinshi viscometer is tested its viscosity and is less than 5mpa.s, breaking glue solution residue is less than 60mg/L, far below " fracturing liquid general technical specifications " (SY/T6376-2008) in Viscoelastic Surfactant-based Fracturing Fluid residue content be not more than 100mg/L, more be not more than 600mg/L lower than guar gum fracturing fluid residue content, can play and prevent brokenly that glue is not thoroughly or the high injury to stratum of residue, be much better than the residue requirement of Viscoelastic Surfactant-based Fracturing Fluid and guar gum fracturing fluid, meet the requirement of clean low yield slag, domestic Patents and the bibliographical information of having no.
It should be noted that, above-described embodiment does not limit the present invention in any form, and all employings are equal to replaces or technical scheme that the mode of equivalent transformation obtains, all drops in protection scope of the present invention.
Claims (5)
1. melon glue clean fracturing fluid, is characterized in that, formed by following mass percent formula,
。
2. the preparation method of melon glue clean fracturing fluid as claimed in claim 1, is characterized in that, comprises the steps:
(1) be added in the mixed tune of 2000ml device by the distilled water of the total mass 95.8-99.47% of melon glue clean fracturing fluid;
(2) open mixed device to the whirlpool occurring of adjusting and can see blade, to the mixed melon glue or the modifyed guar gum that slowly add 0.2-0.3% in device adjusted, reaction 10-30 minute, puts into 1000ml wide-necked bottle, is placed in 20-30 DEG C of water hydration swelling 45-90 minute;
(3) the melon sol solution after hydration swelling is poured into the mixed device of adjusting, after unlatching, add successively the cleanup additive of 0.05-0.5%, the clay stabilizer of 0.05-0.5% or expansion-resisting agent, 0.01-0.15% vegetable jelly sanitas or sterilant, 0.02-0.15 part % fracturing liquid non-emulsifier, 0-2% Repone K is poured mixed tune in device into and is mixed;
(4) open the mixed device of adjusting and occur that whirlpool can see blade, add 0.2-0.6% fracturing liquid be cross-linked gel breaker, the residue of its viscosity variation in 3 hours of test 20-80 degree scope and breaking glue solution, after 3 hours, its viscosity is less than 5mpa.s, and breaking glue solution residue is less than 60ppm.
3. melon glue clean fracturing fluid according to claim 1, is characterized in that, described melon glue and modified product are the one of melon glue, hydroxypropyl guar gum, carboxymethyl melon glue.
4. melon glue clean fracturing fluid according to claim 1, it is characterized in that, the product that the crosslinked gel breaker of described melon glue clean fracturing fluid is made up of linking agent and gel breaker, wherein lower concentration melon rubber cross linker content is more than 40%, crosslinked sand and the broken glue taken that can realize guar gum fracturing fluid, breaking glue solution residue is less than 60ppm.
5. a melon glue clean fracturing fluid is in the application of oil field fracturing fluid.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106833594A (en) * | 2017-02-28 | 2017-06-13 | 陕西延长石油(集团)有限责任公司研究院 | A kind of fluid loss additive and its without viscosifying pure liquid CO2Application in sand fracturing |
| CN106905948A (en) * | 2017-03-31 | 2017-06-30 | 陕西省石油化工研究设计院 | A kind of micro- residue, the guar gum clean fracturing fluid of weak injury |
| CN111500273A (en) * | 2020-05-21 | 2020-08-07 | 盘锦派普环保科技有限公司 | Method for preparing fracturing fluid after water-based drilling fluid sewage treatment |
| CN111574988A (en) * | 2020-05-19 | 2020-08-25 | 陕西省石油化工研究设计院 | Guar gum clean fracturing fluid for oil well and preparation method thereof |
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| CN101838528B (en) * | 2009-03-17 | 2013-11-20 | 大连百奥泰科技有限公司 | Environment-friendly and bio-available green fracturing fluid system |
| CN103484092A (en) * | 2012-06-13 | 2014-01-01 | 中国石油天然气股份有限公司 | Ultralow-temperature guanidine gum fracturing fluid |
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| US7683011B2 (en) * | 2007-12-12 | 2010-03-23 | Du Pont | Process to prepare borozirconate solution and use as cross-linker in hydraulic fracturing fluids |
| CN101838528B (en) * | 2009-03-17 | 2013-11-20 | 大连百奥泰科技有限公司 | Environment-friendly and bio-available green fracturing fluid system |
| CN102391851A (en) * | 2011-10-14 | 2012-03-28 | 中国石油天然气集团公司 | Acid carboxymethyl guargum fracturing fluid and preparation method thereof |
| WO2013109468A2 (en) * | 2012-01-16 | 2013-07-25 | Baker Hughes Incorporated | Compositions useful for the hydrolysis of guar in high ph environments and methods related thereto |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106833594A (en) * | 2017-02-28 | 2017-06-13 | 陕西延长石油(集团)有限责任公司研究院 | A kind of fluid loss additive and its without viscosifying pure liquid CO2Application in sand fracturing |
| CN106833594B (en) * | 2017-02-28 | 2020-01-31 | 陕西延长石油(集团)有限责任公司研究院 | filtrate reducers and pure liquid CO without viscosity increasing2Application in sand fracturing |
| CN106905948A (en) * | 2017-03-31 | 2017-06-30 | 陕西省石油化工研究设计院 | A kind of micro- residue, the guar gum clean fracturing fluid of weak injury |
| CN106905948B (en) * | 2017-03-31 | 2019-06-04 | 陕西省石油化工研究设计院 | A kind of micro- residue, weak injury guar gum clean fracturing fluid |
| CN111574988A (en) * | 2020-05-19 | 2020-08-25 | 陕西省石油化工研究设计院 | Guar gum clean fracturing fluid for oil well and preparation method thereof |
| CN111500273A (en) * | 2020-05-21 | 2020-08-07 | 盘锦派普环保科技有限公司 | Method for preparing fracturing fluid after water-based drilling fluid sewage treatment |
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Application publication date: 20140723 |