CN104710973A - Non-residue polymer fracturing fluid - Google Patents
Non-residue polymer fracturing fluid Download PDFInfo
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- CN104710973A CN104710973A CN201410678905.4A CN201410678905A CN104710973A CN 104710973 A CN104710973 A CN 104710973A CN 201410678905 A CN201410678905 A CN 201410678905A CN 104710973 A CN104710973 A CN 104710973A
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- zirconium
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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
- C09K8/60—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
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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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
- C09K8/60—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
- C09K8/882—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/26—Gel breakers other than bacteria or enzymes
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- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
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Abstract
The invention provides a non-residue polymer fracturing fluid. The system of the fracturing fluid comprises 0.15 to 0.45% of a polymer thickening agent, 0.2 to 0.4% of a cleanup additive, 0.01 to 0.08% of a gel breaker and 0.2 to 0.6% of a composite cross-linking agent, with the balance being water with a pH value of 6 to 7. A preparation method for the fracturing fluid comprising the following steps: adding the polymer thickening agent into the water; then adding the cleanup additive, the gel breaker and the composite cross-linking agent; and carrying out uniform mixing under stirring so as to obtain the fracturing fluid. According to the invention, a polymer is used as the thickening agent and is reacted with the composite cross-linking agent to form a gel; the system carries sand in virtue of the gel; after the gel is broken with the gel breaker, the fracturing fluid has a non-residue characteristic similar to the non-residue characteristic of a clean fracturing fluid; and the fracturing fluid is especially applicable to fracturing transformation of low-permeability and ultralow-permeability reservoir strata.
Description
Technical field
The present invention relates to the fracturing liquid that exploitation of oil-gas field field uses, particularly a kind of be applied to 20 ~ 120 DEG C of hypotonic, special hypotonic well fracturings without residue polymer fracturing fluid.
Background technology
Fracturing reform has become one of major measure of well production increment and augmented injection.As the important component part of fracturing technique, of the fracturing fluid quality plays keying action to fracturing yield increasing.After the nineties in 20th century, foreign study person starts to develop non-polymer aqueous fracturing fluid.At present, fracturing liquid is mainly based on aqueous fracturing fluid.Desirable aqueous fracturing fluid should have enough viscosity to carry propping agent, can the row of returning rapidly after pressure break, does not stay residue, do not injure stratum in crack.But China mainly uses plant gum fracturing fluid system at present, in this system, in water-insoluble and breaking glue solution, residue is more, the filling bed of formation and supporting crack will inevitably cause Severe blockage, its rate of permeation be declined to a great extent, thus greatly reduces fracturing effect; For hypotonic, special hypotonic hydrocarbon zone, usually pressure break complete failure can be caused.Along with oil-gas field development requires more and more higher to fracturing effect, elimination residue and injury thereof become great difficult problem urgently to be resolved hurrily in fracturing technique.
Polymer fracturing fluid is specially for common melon glue class fracturing liquid water-insoluble and the too high and a kind of New Fracturing Fluid system developed of residue.Compared with natural macromolecular material, have strong, the broken glue of thickening capabilities thoroughly, without residue, adaptation temperature range extensively (20 ~ 120 DEG C), to features such as reservoir damage are little.The dosing of polymer fracturing fluid system, construction are identical with guar gum fracturing fluid system, and do not need specific installation, breaking glue solution has similar to residue characteristic with clean fracturing fluid, is particularly suitable for fracturing reform that is hypotonic, ultra-permeable reservior.
Summary of the invention
The object of the present invention is to provide and a kind ofly can solve the injury of fracturing fluid residue to oil and gas reservoir, improve the polymer fracturing fluid of rate of permeation;
Another object of the present invention is the preparation method providing above-mentioned polymer fracturing fluid;
A further object of the invention is to provide the application of above-mentioned polymer fracturing fluid in low temperature, the transformation of hypotonic well fracturing.
Implementation procedure of the present invention is as follows:
A kind of polymer fracturing fluid, the mass percent of its each component is: 0.15 ~ 0.45% polymer thickening agent, 0.2 ~ 0.4% cleanup additive, 0.01% ~ 0.08% gel breaker, 0.2% ~ 0.6% multiple crosslinking agent, and all the other are water, and pH value is 6-7;
Described polymer thickening agent is the anionic polyacrylamide of molecular weight 600 ~ 1,200 ten thousand;
Described cleanup additive is fluorocarbon surfactant, as YM-312, TF-280.
Described gel breaker is ammonium persulphate or Potassium Persulphate capsule;
Described multiple crosslinking agent is be selected from the zirconium of organic polyhydric carboxylic acid, aluminium, iron, chromium, titanium or copper salt solution, mass percent concentration is 5 ~ 20%, described organic polyhydric carboxylic acid is selected from tartrate, lactic acid, citric acid, propanedioic acid, gluconic acid, is preferably zirconium, aluminium, iron, the aqueous solution of chromium salt of organic polyhydric carboxylic acid.
The zirconium of described organic polyhydric carboxylic acid, aluminium, iron, chromium, titanium or copper salt solution are obtained by reacting by organic polyhydric carboxylic acid and soluble zirconium, aluminium, iron, chromium, titanium or mantoquita.
The zirconium of described organic polyhydric carboxylic acid, aluminium, iron, aqueous solution of chromium salt are obtained by reacting by organic polyhydric carboxylic acid and soluble zirconium, aluminium, iron, chromic salts, soluble zirconium, aluminium, iron, chromic salts are zirconium oxychloride, aluminum chloride, iron protochloride, chromium chloride, its mass ratio 1 ~ 5:0.5 ~ 3:0.1 ~ 1:0.1 ~ 2.
Above-mentioned of the fracturing fluid preparation method: be under agitation added to the water by polymer thickening agent, then adds cleanup additive, ammonium persulphate or Potassium Persulphate capsule, multiple crosslinking agent, stirs.
Fracturing liquid of the present invention can be applicable in low temperature, the transformation of hypotonic well fracturing.
Principle of work of the present invention is: viscosifying agent, cleanup additive are added to the water in proportion and are mixed with the aqueous solution, forms frozen glue after adding the multiple crosslinking agent of organometallic complex and ternary complex composition, takes sand and form supporting crack in construction; In stratum capsules break, discharge ammonium persulphate, with the ternary complex effect in frozen glue, frozen glue is broken glue thoroughly, reaches the requirement of the row of returning fast, by controlling ammonium persulphate capsule add-on, makes fracturing liquid meet temperature tolerance needed for stratum.
Advantage of the present invention and positively effect:
(1) fracturing liquid of the present invention uses anionic polyacrylamide to be viscosifying agent, ensure that of the fracturing fluid base fluid viscosity is suitable with melon glue, frozen glue after crosslinked is taken grittiness and can greatly be strengthened, like this under ensureing that the constant condition of grittiness energy taken by fracturing liquid, eliminating the residue produced because using melon glue, being conducive to the fracturing yield increasing of hypotonic, special hypotonic Oil/gas Well;
(2) the present invention adopts multiple crosslinking agent and anionic polyacrylamide to be cross-linked to form the frozen glue of tridimensional network, take sand and enter stratum, ternary complex in ammonium persulphate capsule and multiple crosslinking agent reacts, discharge active oxygen, oxypolymer carbochain, Gel Breakdown aquation, fracturing liquid is the row of returning easily, not easily block reservoir and supporting crack, improve the rate of permeation of man-made fracture;
(3) to have anti-shear performance good for fracturing liquid of the present invention, is conducive to the extension of formation fracture and man-made fracture, is conducive to suspending and conveying propping agent, is formed with the man-made fracture of enough flow conductivities;
(4) fracturing liquid of the present invention can break glue at low temperatures, solves the problem of the broken at low temperatures glue difficulty of guar gum fracturing fluid, is particularly suitable for the fracturing reform of low temperature, hypotonic Oil/gas Well.
Embodiment
Embodiment 1
By massfraction be under agitation 0.15% anionic polyacrylamide be added to the water, then add massfraction be 0.3% fluorocarbon surfactant YM-312, massfraction be 0.01% ammonium persulphate capsule, massfraction be 0.2% multiple crosslinking agent (all the other are water, each constituent mass per-cent sum is absolutely), stir and namely obtain polymer fracturing fluid, this polymer fracturing fluid is adapted to the reservoir fracturing of less than 40 DEG C.
Described multiple crosslinking agent to be mass percent concentration be 10% tartaric zirconium, aluminium, iron, aqueous solution of chromium salt, wherein react the zirconium oxychloride of use, aluminum chloride, iron protochloride, chromium chloride mass ratio be 3:1:0.5:1.
Embodiment 2
By massfraction be under agitation 0.25% anionic polyacrylamide be added to the water, then add massfraction be 0.3% fluorocarbon surfactant TF-280, massfraction be 0.02% ammonium persulphate capsule, massfraction be 0.4% multiple crosslinking agent (all the other are water, each constituent mass per-cent sum is absolutely), stir and namely obtain polymer fracturing fluid, this polymer fracturing fluid is adapted to the reservoir fracturing of 40 DEG C ~ 80 DEG C.
Described multiple crosslinking agent to be mass percent concentration be 15% tartrate, lactic acid, citric acid (mass ratio is 1:1:1) zirconium, aluminium, iron, aqueous solution of chromium salt, wherein react the zirconium oxychloride of use, aluminum chloride, iron protochloride, chromium chloride mass ratio be 4:2:0.7:1.2.
Embodiment 3
By massfraction be under agitation 0.45% anionic polyacrylamide be added to the water, then add massfraction be 0.3% fluorocarbon surfactant TF-280, massfraction be 0.03% potassium sulfate capsule, massfraction be 0.6% multiple crosslinking agent (all the other are water, each constituent mass per-cent sum is absolutely), stir and namely obtain polymer fracturing fluid, this polymer fracturing fluid is adapted to the reservoir fracturing of 80 DEG C ~ 120 DEG C.
Described multiple crosslinking agent to be mass percent concentration be 15% lactic acid, citric acid, propanedioic acid (mass ratio is 1:2:1) zirconium, aluminium, iron, aqueous solution of chromium salt, wherein react the zirconium oxychloride of use, aluminum chloride, iron protochloride, chromium chloride mass ratio be 4:2:0.7:1.2.
Embodiment 4 zero salvage value fracturing fluid property is tested
(1) temperature and shearing sustainability: temperature is respectively 20 DEG C, 60 DEG C, 90 DEG C, 120 DEG C, at 170 s
-1after continuous shear stress 60min, viscosity is respectively 81,97,226,183 mPas, can meet the requirement of pressing crack construction completely.
(2) broken colloidality energy and residue content: the broken glue speed of frozen glue according to reservoir temperature, can be controlled by the dosage of adjustment ammonium persulphate capsule.Gel breaker add-on is between 0.01% ~ 0.08%, and the breaking glue solution viscosity after 120min is all less than 5 mPas, and residue content is less than 20mg/L, far below guar gum fracturing fluid, suitable with clean fracturing fluid, little to reservoir damage.
(3) static filtration performance: under pressure reduction 3.5MPa, the fluid loss rate of 30 DEG C, 60 DEG C, 90 DEG C formula systems is respectively 1.61 × 10
-4m/min
1/2, 1.93 × 10
-4m/min
1/2, 2.04 × 10
-4m/min
1/2.
(4) row's of helping performance: the surface tension after Gel Breakdown is less than 26 mN/m, is less than 1 mN/m with the interfacial tension of kerosene, has the well row's of helping performance.
Claims (8)
1. a polymer fracturing fluid, it is characterized in that the mass percent of each component is: 0.15 ~ 0.45% polymer thickening agent, 0.2 ~ 0.4% cleanup additive, 0.01% ~ 0.08% gel breaker, 0.2% ~ 0.6% multiple crosslinking agent, all the other are water, and pH value is 6-7;
Described polymer thickening agent is the anionic polyacrylamide of molecular weight 600 ~ 1,200 ten thousand;
Described cleanup additive is fluorocarbon surfactant;
Described gel breaker is ammonium persulphate or Potassium Persulphate capsule;
Described multiple crosslinking agent is selected from the zirconium of organic polyhydric carboxylic acid, aluminium, iron, chromium, titanium or copper salt solution, and mass percent concentration is 5 ~ 20%, and described organic polyhydric carboxylic acid is selected from tartrate, lactic acid, citric acid, propanedioic acid, gluconic acid.
2. polymer fracturing fluid according to claim 1, is characterized in that: described fluorocarbon surfactant is selected from YM-312, TF-280.
3. polymer fracturing fluid according to claim 1, is characterized in that: the zirconium of described organic polyhydric carboxylic acid, aluminium, iron, chromium, titanium or copper salt solution are obtained by reacting by organic polyhydric carboxylic acid and soluble zirconium, aluminium, iron, chromium, titanium or mantoquita.
4. polymer fracturing fluid according to claim 1, is characterized in that: described multiple crosslinking agent is zirconium, aluminium, iron, the aqueous solution of chromium salt of organic polyhydric carboxylic acid.
5. polymer fracturing fluid according to claim 4, is characterized in that: the zirconium of described organic polyhydric carboxylic acid, aluminium, iron, aqueous solution of chromium salt are obtained by reacting by organic polyhydric carboxylic acid and soluble zirconium, aluminium, iron, chromic salts.
6. polymer fracturing fluid according to claim 5, is characterized in that: soluble zirconium, aluminium, iron, chromic salts are zirconium oxychloride, aluminum chloride, iron protochloride, chromium chloride, its mass ratio 1 ~ 5:0.5 ~ 3:0.1 ~ 1:0.1 ~ 2.
7. of the fracturing fluid preparation method described in claim 1, is characterized in that: be under agitation added to the water by polymer thickening agent, then adds cleanup additive, ammonium persulphate or Potassium Persulphate capsule, multiple crosslinking agent, stirs.
8. the application of fracturing liquid described in claim 1 in low temperature, the transformation of hypotonic well fracturing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410678905.4A CN104710973A (en) | 2014-11-24 | 2014-11-24 | Non-residue polymer fracturing fluid |
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| CN201410678905.4A CN104710973A (en) | 2014-11-24 | 2014-11-24 | Non-residue polymer fracturing fluid |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295885A (en) * | 2015-11-06 | 2016-02-03 | 中国石油化工股份有限公司 | Acid polymer weighted fracture fluid and preparation method thereof |
| CN105670597A (en) * | 2016-04-21 | 2016-06-15 | 成都劳恩普斯科技有限公司 | Method for preventing proppants in water-base fracturing fluid from settling in transfer process |
| CN105778883A (en) * | 2016-04-21 | 2016-07-20 | 成都劳恩普斯科技有限公司 | Full-suspension cleaning polymer fracturing fluid and preparation method thereof |
| CN105860951A (en) * | 2016-05-16 | 2016-08-17 | 中国石油化工股份有限公司 | Acidic polymer fracturing fluid and preparation method thereof |
| CN108179008A (en) * | 2017-12-08 | 2018-06-19 | 成都劳恩普斯科技有限公司 | A kind of cross linker system, low concentration polymer crosslinked fracturing fluid and preparation method thereof |
| CN110467911A (en) * | 2019-08-16 | 2019-11-19 | 四川泓宝润业工程技术有限公司 | A kind of multi-functional fracturing fluid of salt resistance and preparation method |
| CN110630238A (en) * | 2019-11-14 | 2019-12-31 | 西安石油大学 | Fracturing-oil displacement integrated yield increasing method for oil field |
| CN110791277A (en) * | 2019-11-14 | 2020-02-14 | 西安石油大学 | Fracturing fluid capable of being converted into oil displacement agent without flowback for oil field and preparation method thereof |
| CN111518530A (en) * | 2020-04-07 | 2020-08-11 | 大庆油田有限责任公司 | Organic zirconium cross-linked gel plugging modifier for water-flooding well treatment and preparation method thereof |
| CN115305077A (en) * | 2021-05-06 | 2022-11-08 | 中国石油天然气股份有限公司 | Guanidine gum fracturing fluid and application |
| CN115678532A (en) * | 2021-07-30 | 2023-02-03 | 中国石油化工股份有限公司 | Crosslinking agent and preparation method and application thereof |
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| CN103497752A (en) * | 2013-09-30 | 2014-01-08 | 中国石油天然气股份有限公司 | Micro-residue liquid-state instant fracturing fluid |
| CN103911136A (en) * | 2014-03-12 | 2014-07-09 | 北京爱普聚合科技有限公司 | Oil-based liquid-state fracturing fluid thickening agent, and preparation method thereof |
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2014
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Patent Citations (4)
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| CN102363727A (en) * | 2011-11-12 | 2012-02-29 | 西北大学 | Seawater-based oil gas well fracturing fluid |
| CN103215023A (en) * | 2013-04-26 | 2013-07-24 | 浙江师范大学 | Water-alcohol type hydraulic fluid thickener as well as preparation method and application of thickener |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295885A (en) * | 2015-11-06 | 2016-02-03 | 中国石油化工股份有限公司 | Acid polymer weighted fracture fluid and preparation method thereof |
| CN105670597A (en) * | 2016-04-21 | 2016-06-15 | 成都劳恩普斯科技有限公司 | Method for preventing proppants in water-base fracturing fluid from settling in transfer process |
| CN105778883A (en) * | 2016-04-21 | 2016-07-20 | 成都劳恩普斯科技有限公司 | Full-suspension cleaning polymer fracturing fluid and preparation method thereof |
| CN105860951A (en) * | 2016-05-16 | 2016-08-17 | 中国石油化工股份有限公司 | Acidic polymer fracturing fluid and preparation method thereof |
| CN108179008A (en) * | 2017-12-08 | 2018-06-19 | 成都劳恩普斯科技有限公司 | A kind of cross linker system, low concentration polymer crosslinked fracturing fluid and preparation method thereof |
| CN110467911A (en) * | 2019-08-16 | 2019-11-19 | 四川泓宝润业工程技术有限公司 | A kind of multi-functional fracturing fluid of salt resistance and preparation method |
| CN110630238A (en) * | 2019-11-14 | 2019-12-31 | 西安石油大学 | Fracturing-oil displacement integrated yield increasing method for oil field |
| CN110791277A (en) * | 2019-11-14 | 2020-02-14 | 西安石油大学 | Fracturing fluid capable of being converted into oil displacement agent without flowback for oil field and preparation method thereof |
| CN111518530A (en) * | 2020-04-07 | 2020-08-11 | 大庆油田有限责任公司 | Organic zirconium cross-linked gel plugging modifier for water-flooding well treatment and preparation method thereof |
| CN111518530B (en) * | 2020-04-07 | 2022-08-19 | 大庆油田有限责任公司 | Organic zirconium cross-linked gel plugging modifier for water-flooding well treatment and preparation method thereof |
| CN115305077A (en) * | 2021-05-06 | 2022-11-08 | 中国石油天然气股份有限公司 | Guanidine gum fracturing fluid and application |
| CN115305077B (en) * | 2021-05-06 | 2024-04-30 | 中国石油天然气股份有限公司 | Guanidine gum fracturing fluid and application |
| CN115678532A (en) * | 2021-07-30 | 2023-02-03 | 中国石油化工股份有限公司 | Crosslinking agent and preparation method and application thereof |
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