CN103265942A - Acidic cross-linking agent of hydropropyl guar gum and preparation technology of the cross-linking agent - Google Patents
Acidic cross-linking agent of hydropropyl guar gum and preparation technology of the cross-linking agent Download PDFInfo
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Links
- 230000002378 acidificating effect Effects 0.000 title claims abstract description 29
- 239000003431 cross linking reagent Substances 0.000 title claims abstract description 24
- 238000005516 engineering process Methods 0.000 title claims abstract description 12
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 229920002907 Guar gum Polymers 0.000 title abstract 4
- 239000000665 guar gum Substances 0.000 title abstract 4
- 229960002154 guar gum Drugs 0.000 title abstract 4
- 235000010417 guar gum Nutrition 0.000 title abstract 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract description 14
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims abstract description 6
- 235000010288 sodium nitrite Nutrition 0.000 claims abstract description 6
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 6
- 239000004310 lactic acid Substances 0.000 claims abstract description 4
- 235000014655 lactic acid Nutrition 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 45
- 239000003795 chemical substances by application Substances 0.000 claims description 44
- 239000003292 glue Substances 0.000 claims description 31
- JDXXTKLHHZMVIO-UHFFFAOYSA-N 2-(3-hydroxypropyl)guanidine Chemical compound NC(=N)NCCCO JDXXTKLHHZMVIO-UHFFFAOYSA-N 0.000 claims description 21
- 238000005303 weighing Methods 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 13
- 229910000397 disodium phosphate Inorganic materials 0.000 claims description 5
- 235000019800 disodium phosphate Nutrition 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 claims description 5
- ZXAUZSQITFJWPS-UHFFFAOYSA-J zirconium(4+);disulfate Chemical compound [Zr+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZXAUZSQITFJWPS-UHFFFAOYSA-J 0.000 claims description 4
- BNUDRLITYNMTPD-UHFFFAOYSA-N acetic acid;zirconium Chemical compound [Zr].CC(O)=O BNUDRLITYNMTPD-UHFFFAOYSA-N 0.000 claims description 3
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-UHFFFAOYSA-N 0.000 claims description 3
- TZMFJUDUGYTVRY-UHFFFAOYSA-N pentane-2,3-dione Chemical compound CCC(=O)C(C)=O TZMFJUDUGYTVRY-UHFFFAOYSA-N 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 14
- 239000000654 additive Substances 0.000 abstract description 9
- 230000000996 additive effect Effects 0.000 abstract description 7
- 238000004132 cross linking Methods 0.000 abstract description 7
- 239000003381 stabilizer Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract 1
- 239000001488 sodium phosphate Substances 0.000 abstract 1
- 229910000406 trisodium phosphate Inorganic materials 0.000 abstract 1
- 235000019801 trisodium phosphate Nutrition 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 8
- 229910052796 boron Inorganic materials 0.000 description 8
- 239000004927 clay Substances 0.000 description 8
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 3
- BPMFZUMJYQTVII-UHFFFAOYSA-N guanidinoacetic acid Chemical compound NC(=N)NCC(O)=O BPMFZUMJYQTVII-UHFFFAOYSA-N 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002734 clay mineral Substances 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 150000003754 zirconium Chemical class 0.000 description 2
- 239000004160 Ammonium persulphate Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 1
- 235000019395 ammonium persulphate Nutrition 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229930014626 natural product Natural products 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses an acidic cross-linking agent of hydropropyl guar gum, comprising a cross-linking agent and a cross-linking stabilizing agent, wherein the addition amount of the cross-linking agent is 0.3-0.8% of a fracturing fluid system, and the addition amount of the cross-linking stabilizing agent is 0.5-1% of the fracturing fluid system, the cross-linking agent contains the following raw materials by weight: 6-12 parts of inorganic zirconate, 18-25 parts of additive, and the balance water; the additive is one or more selected from glycerol, glycol, lactic acid and acetylacetone; and the cross-linking stabilizing agent is one or more selected from sodium nitrite, trisodium phosphate and disodium hydrogen phosphate. The invention further discloses a preparation technology of the cross-linking agent. The beneficial effects comprise that: the acidic cross-linking agent of hydropropyl guar gum has wide adaptability, and implements crosslinking of the hydropropyl guar gum in an acidic condition; and has good compatibleness with other additives of the fracturing fluid, such as an adhesive stabilizer, a cleanup additive, a foaming agent, etc. The fracturing fluid system has excellent performances and wide adaptability.
Description
Technical field
The present invention relates to the oil-gas field fracturing liquid system, particularly the preparation technology of hydroxypropyl guanidine glue acidic crosslinking agent and linking agent.
Background technology
Petrofracturing abbreviates formation fracturing or pressure break as, be to grow up the forties in 20th century-item is transformed the Technology of oil reservoir seepage characteristic, is an important process measure of well production increment, water injection well stimulation.It is to utilize ground high-pressure pump group, and high-viscous liquid is injected well with the discharge capacity that substantially exceeds the formation absorption ability, forms high pressure immediately near the shaft bottom.This pressure forms the crack after surpassing the tensile strength of near the reservoir stress in shaft bottom and rock in the stratum.The liquid that continuation will have propping agent injects seam, seam is extended forward, and fill out with propping agent.After termination of pumping, can form a sufficiently long like this, have the sand packed fracture of certain altitude and width, thereby improve the flow conductivity of hydrocarbon zone, reach the purpose of frscturing.
Fracturing liquid provides the means of waterfrac treatment construction operation, but in the factors that influence the pressure break success or failure, fracturing liquid and performance thereof are very important.The present fracturing liquid that uses both at home and abroad has a variety of, mainly contains oil base fracturing fluid, aqueous fracturing fluid, acid base fracturing fluid, emulsification fracturing liquid and foamed fracturing fluid.Wherein aqueous fracturing fluid and oil base fracturing fluid are used more extensively, and aqueous fracturing fluid is with water as solvent or dispersion medium, to wherein add viscosifying agent, additive is formulated.Viscosifying agent is swelled into colloidal sol in water, crosslinked back forms the high frozen glue of viscosity.Have advantages such as viscosity height, outstanding sand ability is strong, leak-off is low, frictional resistance is low.Usually adopt guanidine glue as viscosifying agent, guanidine glue is natural product, water-fast plant constituent can not be separated fully in the processing usually, and between 20%～25%, dosage is 0.4%～0.7% to water-insoluble usually.Unmodified guanidine glue can keep satisfactory stability under 80 ℃, but because residue content is higher, easily causes supporting crack to stop up.Discover that fracturing liquid mainly can not slap-uply return the discharge stratum from the viscosifying agent molecule in the liquid system to the injury on stratum, remain in the stratum, stop up gas channel.And because guanidine glue price goes up fast at present, increased considerably the fracturing liquid cost.The pressure break of major part employing at present secondary HPG(hydroxypropyl guanidine glue) generally about 8%, the breaking glue solution residue is more simultaneously, and is bigger to the injury in stratum and crack for water-insoluble.
At present, the hydroxypropyl guanidine gum fracturing fluid linking agent of domestic preparation, what generally adopt is based on inorganic boron or organic boron, these traditional linking agents need be crosslinked under alkaline condition, crosslinked pH is 9～11, increases alkali content and is conducive to improve the delayed cross-linking time, becomes the glue effect bad under the acidic conditions, even can not form jelly, be not suitable for the quick property of alkali stratum.After fracturing liquid entered hydrocarbon zone, because clay mineral and alkali effect increase the negative charge on clay mineral surface, water sensitivity strengthened, and has also formed many silicon sol simultaneously, and blocking channel causes serious secondary injury to the stratum.Developed based on the fracturing liquid system of pH value for acidity and can address the above problem preferably based on this, what be used for acid cross-linked at present mainly is organic titanium, zirconium class linking agent, research thinks that the mechanism of crosslinking under the sour environment is crosslinked different with conventional boron, so thickening material adopts the higher carboxymethyl guanidine glue of cost or other synthesized polymer materials usually.The ripe acid fracturing liquid of research has following characteristics:
1: the sour environment that acid fracturing liquid provides can suppress the expansion migration that the electronegativity because of surface of clay causes effectively, and excessive H+ can strengthen the molecular force of each interlayer with the displacement of the metal ion in the clay molecules, plays the effect of clay stabilization.Therefore acid of the fracturing fluid anti-swollen performance is as a rule good than alkaline fracturing liquid.
2: what be used for acid cross-linked at present mainly is organic titanium, zirconium class linking agent, and research thinks that the mechanism of crosslinking under the sour environment is crosslinked different with conventional boron, so thickening material adopts the higher carboxymethyl guanidine glue of cost or other synthesized polymer materials usually.
Summary of the invention
The objective of the invention is to overcome the shortcoming of prior art, a kind of wide adaptability is provided, has realized linking agent crosslinked hydroxypropyl guanidine glue acidic crosslinking agent and preparation technology of linking agent under acidic conditions.
Purpose of the present invention is achieved through the following technical solutions: hydroxypropyl guanidine glue acidic crosslinking agent, it comprises linking agent and crosslinked stablizer, the dosage of linking agent is 0.3～0.8% of fracturing liquid system, the dosage of crosslinked stablizer is 0.5～1% of fracturing liquid system, and described linking agent is made by the raw material of following weight ratio:
Inorganic zirconates 6～12,
Admixture 18～25,
Surplus is water;
Described admixture is one or more mixtures in glycerol, ethylene glycol, lactic acid, the methyl ethyl diketone;
Described crosslinked stablizer is one or more mixtures in Sodium Nitrite, tertiary sodium phosphate, the Sodium phosphate dibasic.
Described inorganic zirconates is one or more mixtures in zirconium tetrachloride, zirconium oxychloride, zirconium sulfate, the acetic acid zirconium.
The preparation technology of linking agent in the hydroxypropyl guanidine glue acidic crosslinking agent, it may further comprise the steps:
S1, take by weighing each raw material by the prescription of above-mentioned linking agent, the water that takes by weighing is added in the reaction vessel;
S2, the admixture that takes by weighing is added in the above-mentioned reaction vessel, stirred 10～20 minutes;
S3, the inorganic zirconates that will take by weighing then slowly add in the above-mentioned reaction vessel gradually, stir 50～70 minutes, get product.
The present invention has the following advantages:
The present invention has adaptability widely, be that the basis is carried out less change and just can be changed that to obtain pH value be about 3 slightly acidic system at former hydroxypropyl guanidine colloid, preparation is convenient, be beneficial to on-the-spot dosing, and realized that hydroxypropyl guanidine glue is crosslinked under acidic conditions, the sour environment that acid fracturing liquid provides can suppress the expansion migration that the electronegativity because of surface of clay causes effectively, excessive H+ can replace the metal ion in the clay molecules, strengthen the molecular force of each interlayer, play the effect of clay stabilization, therefore acid of the fracturing fluid anti-swollen performance is better than existing alkaline fracturing liquid.
Other the sticking steady agent of the present invention and fracturing liquid, cleanup additive, the equal compatibleness of additives such as pore forming material is good, make the hydroxypropyl guanidine glue that the thickening material of fracturing liquid system can use the oil field generally to use, compare existing acid cross-linked and adopt higher carboxymethyl guanidine glue or other synthesized polymer materials of cost, bigger reduction the cost of thickening material, linking agent cost of the present invention even can be lower than organic borate cross-linker commonly used, the pH value conditioning agent that increases, the crosslinked stablizer prices of raw and semifnished materials are cheap and working concentration is low is respectively 0.2%, about 0.4%, so crosslinked organic boron fracturing liquid cost is quite even lower under slightly acidic fracturing liquid final cost and the existing alkaline environment.
Adopt fracturing liquid system superior performance of the present invention: according to experimental verification slightly acidic fracturing liquid than organic boron fracturing liquid, its anti-swollen index exceeds more than 5～10%, surface tension reduces about 1～2mN/m, residue content reduces more than 10%, temperature resistance can reach more than 120 ℃, comparing organic boron fracturing liquid has certain reduction to core damage, thereby the over-all properties that adopts fracturing liquid system of the present invention has stronger application value significantly better than existing organic boron fracturing liquid.
The laboratory is to existing alkaline fracturing liquid and adopt the slightly acidic fracturing liquid of acidic crosslinking agent of the present invention to detect, and prescription is respectively:
Alkalescence fracturing liquid prescription: 0.40% hydroxypropyl guanidine glue+0.3% sterilant+0.5% clay stabilizer+0.5% cleanup additive+0.3% yellow soda ash+0.4% organic borate cross-linker
Acid fracturing liquid prescription: the crosslinked stablizer of 0.40% hydroxypropyl guanidine glue+0.3% sterilant+0.5% clay stabilizer+0.5% cleanup additive+0.3% yellow soda ash+1%+0.3%PH value conditioning agent+0.4% linking agent.
Respectively above-mentioned system is added 600ppm ammonium persulphate gel breaker and put into 60 ℃ of water-baths, broken glue obtained behind the breaking glue solution its performance being detected in 3 hours, and detected result is as follows:
| Test item | The alkalescence fracturing liquid | The slightly acidic fracturing liquid |
| Anti-swollen rate (%) | 54 | 77 |
| Surface tension (mN/m) | 28.2 | 26.7 |
| Residue content (mg/l) | 672 | 475 |
By above-mentioned detected result as can be known, adopt the slightly acidic fracturing liquid of acidic crosslinking agent of the present invention to compare the anti-swollen index of existing alkaline fracturing liquid and exceed 5～10%, surface tension low 1～2, residue content will hang down more than 10%, core damage is reduced anti-swollen index to be exceeded more than 5～10%, surface tension reduces about 1～2mN/m, and residue content reduces more than 10%, also can decrease core damage.
Embodiment
The present invention will be further described below in conjunction with embodiment, and protection scope of the present invention is not limited to the following stated:
Embodiment 1:
Hydroxypropyl guanidine glue acidic crosslinking agent, it comprises linking agent and crosslinked stablizer, the dosage of linking agent is 0.5% of fracturing liquid system, the dosage of crosslinked stablizer is 1% of fracturing liquid system, described crosslinked stablizer is one or more mixtures in Sodium Nitrite, tertiary sodium phosphate, the Sodium phosphate dibasic, and described linking agent is made by the raw material of following weight ratio:
Inorganic zirconates 6,
Admixture 22,
Surplus is water;
Described admixture is the mixture of glycerol and ethylene glycol.
Described inorganic zirconates is zirconium tetrachloride.
The preparation technology of linking agent in the hydroxypropyl guanidine glue acidic crosslinking agent, it may further comprise the steps:
S1, take by weighing each raw material by the prescription of above-mentioned linking agent, the water that takes by weighing is added in the reaction vessel;
S2, the admixture that takes by weighing is added in the above-mentioned reaction vessel, stirred 15 minutes;
S3, the inorganic zirconates that will take by weighing then slowly add in the above-mentioned reaction vessel gradually, stir 50 minutes, get product.
Embodiment 2:
Hydroxypropyl guanidine glue acidic crosslinking agent, it comprises linking agent and crosslinked stablizer, the dosage of linking agent is 0.3% of fracturing liquid system, the dosage of crosslinked stablizer is 0.8% of fracturing liquid system, described crosslinked stablizer is one or more mixtures in Sodium Nitrite, tertiary sodium phosphate, the Sodium phosphate dibasic, and described linking agent is made by the raw material of following weight ratio:
Inorganic zirconates 11,
Admixture 18,
Surplus is water;
Described admixture is glycerol.
Described inorganic zirconates is the mixture in zirconium tetrachloride, zirconium oxychloride, zirconium sulfate and the acetic acid zirconium.
The preparation technology of linking agent in the hydroxypropyl guanidine glue acidic crosslinking agent, it may further comprise the steps:
S1, take by weighing each raw material by the prescription of above-mentioned linking agent, the water that takes by weighing is added in the reaction vessel;
S2, the admixture that takes by weighing is added in the above-mentioned reaction vessel, stirred 10 minutes;
S3, the inorganic zirconates that will take by weighing then slowly add in the above-mentioned reaction vessel gradually, stir 60 minutes, get product.
Embodiment 3:
Hydroxypropyl guanidine glue acidic crosslinking agent, it comprises linking agent and crosslinked stablizer, the dosage of linking agent is 0.8% of fracturing liquid system, the dosage of crosslinked stablizer is 0.5% of fracturing liquid system, described crosslinked stablizer is one or more mixtures in Sodium Nitrite, tertiary sodium phosphate, the Sodium phosphate dibasic, and described linking agent is made by the raw material of following weight ratio:
Inorganic zirconates 12,
Admixture 25,
Surplus is water;
Described admixture is the mixture of glycerol, ethylene glycol, lactic acid and methyl ethyl diketone.
Described inorganic zirconates is the mixture of zirconium tetrachloride and zirconium sulfate.
The preparation technology of linking agent in the hydroxypropyl guanidine glue acidic crosslinking agent, it may further comprise the steps:
S1, take by weighing each raw material by the prescription of above-mentioned linking agent, the water that takes by weighing is added in the reaction vessel;
S2, the admixture that takes by weighing is added in the above-mentioned reaction vessel, stirred 20 minutes;
S3, the inorganic zirconates that will take by weighing then slowly add in the above-mentioned reaction vessel gradually, stir 70 minutes, get product.
Claims (3)
1. hydroxypropyl guanidine glue acidic crosslinking agent, it is characterized in that: it comprises linking agent and crosslinked stablizer, the dosage of linking agent is 0.3～0.8% of fracturing liquid system, and the dosage of crosslinked stablizer is 0.5～1% of fracturing liquid system, and described linking agent is made by the raw material of following weight ratio:
Inorganic zirconates 6～12,
Admixture 18～25,
Surplus is water;
Described admixture is one or more mixtures in glycerol, ethylene glycol, lactic acid, the methyl ethyl diketone;
Described crosslinked stablizer is one or more mixtures in Sodium Nitrite, tertiary sodium phosphate, the Sodium phosphate dibasic.
2. hydroxypropyl guanidine glue acidic crosslinking agent according to claim 1, it is characterized in that: described inorganic zirconates is one or more mixtures in zirconium tetrachloride, zirconium oxychloride, zirconium sulfate, the acetic acid zirconium.
3. the preparation technology of linking agent in the hydroxypropyl guanidine glue acidic crosslinking agent as claimed in claim 1, it is characterized in that: it may further comprise the steps:
S1, take by weighing each raw material by the prescription of above-mentioned linking agent, the water that takes by weighing is added in the reaction vessel;
S2, the admixture that takes by weighing is added in the above-mentioned reaction vessel, stirred 10～20 minutes;
S3, the inorganic zirconates that will take by weighing then slowly add in the above-mentioned reaction vessel gradually, stir 50～70 minutes, get product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013101627970A CN103265942A (en) | 2013-05-07 | 2013-05-07 | Acidic cross-linking agent of hydropropyl guar gum and preparation technology of the cross-linking agent |
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| CN2013101627970A CN103265942A (en) | 2013-05-07 | 2013-05-07 | Acidic cross-linking agent of hydropropyl guar gum and preparation technology of the cross-linking agent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111676008A (en) * | 2020-06-05 | 2020-09-18 | 中国石油大学(北京) | A kind of acid fracturing fluid and its preparation method and application |
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| CN102155209A (en) * | 2011-01-21 | 2011-08-17 | 中国石油大学(北京) | Method for fracturing stratum by acidity viscoelastic fluid |
| CN102206484A (en) * | 2011-04-07 | 2011-10-05 | 中国石油天然气股份有限公司 | Acidic hydrophobic association compound fracturing fluid |
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2013
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101724389A (en) * | 2008-10-22 | 2010-06-09 | 中国石油天然气股份有限公司 | Cross-linked acid sand fracturing acid liquid |
| CN102155209A (en) * | 2011-01-21 | 2011-08-17 | 中国石油大学(北京) | Method for fracturing stratum by acidity viscoelastic fluid |
| CN102206484A (en) * | 2011-04-07 | 2011-10-05 | 中国石油天然气股份有限公司 | Acidic hydrophobic association compound fracturing fluid |
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| 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 |
| CN111676008A (en) * | 2020-06-05 | 2020-09-18 | 中国石油大学(北京) | A kind of acid fracturing fluid and its preparation method and application |
| CN111676008B (en) * | 2020-06-05 | 2021-07-09 | 中国石油大学(北京) | Acidic fracturing fluid and preparation method and application thereof |
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Application publication date: 20130828 |