CN115595137A - Acidic guanidine gum fracturing fluid and application thereof - Google Patents

Acidic guanidine gum fracturing fluid and application thereof Download PDF

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CN115595137A
CN115595137A CN202110766728.5A CN202110766728A CN115595137A CN 115595137 A CN115595137 A CN 115595137A CN 202110766728 A CN202110766728 A CN 202110766728A CN 115595137 A CN115595137 A CN 115595137A
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fracturing fluid
volume
corrosion inhibitor
mass
cross
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谭佳
潘宝风
刘多容
兰林
王文耀
杨东梅
李志鑫
李洪波
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China Petroleum and Chemical Corp
Sinopec Southwest Oil and Gas Co
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Sinopec Southwest Oil and Gas Co
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    • C—CHEMISTRY; METALLURGY
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    • 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
    • C09K8/665—Compositions based on water or polar solvents containing inorganic compounds
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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
    • 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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    • 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
    • C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
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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
    • C09K8/84—Compositions based on water or polar solvents
    • C09K8/86—Compositions based on water or polar solvents containing organic compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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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
    • C09K8/84—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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    • C09K8/60—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
    • C09K8/887—Compositions based on water or polar solvents containing organic compounds macromolecular compounds containing cross-linking agents
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
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    • E21B43/26—Methods for stimulating production by forming crevices or fractures

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Abstract

The invention provides an acidic fracturing fluid and application thereof. The fracturing fluid comprises HCl, a thickening agent, a cleanup additive, a clay stabilizer, a corrosion inhibitor, a cross-linking agent and the balance of water, wherein the mass/volume content of the thickening agent is 0.4-0.8%, the volume/volume content of the corrosion inhibitor is 0.5-6.0%, the volume/volume content of the clay stabilizer is 0.3-0.5%, the volume/volume content of the cleanup additive is 0.3-0.5%, and the volume/volume content of the cross-linking agent is 0.6-0.7%, based on 100% of a hydrochloric acid aqueous solution with the mass concentration of 0.0000365-5%.

Description

Acidic guanidine gum fracturing fluid and application thereof
Technical Field
The invention provides an acid guanidine gum fracturing fluid, in particular to an inorganic strong acid guanidine gum fracturing fluid which is particularly suitable for deep acid fracturing.
Background
The sea-phase carbonate rock reservoir in the Sichuan basin has the characteristics of deep burial, high temperature and high fracture pressure, and in order to realize the purpose of deep acid fracturing, an alternating injection acidification transformation process needs to be carried out by matching high-viscosity guanidine gum fracturing fluid on the basis of conventional low-viscosity acid liquid. Due to the limitation of the prior art, only alkaline guanidine gum fracturing fluid can be adopted in construction. However, once the alkaline guanidine gum fracturing fluid contacts acid liquor, acid-base neutralization reaction occurs, so that the acid concentration is reduced, the viscosity of the fracturing fluid is reduced, the filtration loss is increased, the seepage of the fluid to the far end of a reservoir cannot be realized, the acid corrosion capability is weakened, the action distance of the acid liquor is shortened, and the fracture-making capability of the fracturing fluid is weakened. Therefore, an acidic guanidine gum fracturing fluid is required to replace an alkaline guanidine gum fracturing fluid in deep acidizing reconstruction.
In the existing acidic guanidine gum fracturing fluid, organic weak acids such as formic acid and acetic acid are adopted in the system, the pH value is between 4 and 6, the acid corrosion capability on the rock core of the reservoir is limited, and the reservoir modification effect is greatly influenced.
In addition, alternating injection acidizing reconstruction processes are also carried out in deep wells of many marine carbonate reservoirs such as the Tarim basin and the Ordos basin, and the alkaline guanidine gum fracturing fluid used in the oil and gas reservoirs cannot meet the requirements of deep acid fracturing reconstruction. Therefore, in order to meet the technical requirements of deep acid fracturing reformation of more oil and gas reservoirs, the development of the acid guanidine gum fracturing fluid with excellent acid resistance is urgently needed.
Disclosure of Invention
The invention provides a fracturing fluid which comprises HCl, a thickening agent, a cleanup additive, a clay stabilizer, a corrosion inhibitor, a cross-linking agent and the balance of water, wherein the mass/volume content of the thickening agent is 0.4-0.8%, the volume/volume content of the corrosion inhibitor is 0.5-6.0%, the volume/volume content of the clay stabilizer is 0.3-0.5%, the volume/volume content of the cleanup additive is 0.3-0.5% and the volume/volume content of the cross-linking agent is 0.6-0.7% based on 100% of a hydrochloric acid aqueous solution with the mass concentration of 0.0000365-5%.
In one embodiment, the thickener is carboxymethyl guar gum and/or carboxymethyl hydroxypropyl guar gum.
In a specific embodiment, the cleanup additive is hexafluoropropylene oxide.
In one embodiment, the clay stabilizer is octadecyl amidopropyl trimethyl ammonium methyl carbonate.
In one embodiment, the corrosion inhibitor is an imidazoline corrosion inhibitor.
In one embodiment, the corrosion inhibitor is a propargyl alcohol imidazoline and/or a hexynol imidazoline.
In one embodiment, the crosslinking agent is an organozirconium based crosslinking agent.
In a specific embodiment, the cross-linking agent is an acidic organic zirconium cross-linking agent obtained by uniformly mixing 5 parts by mass of zirconium oxychloride, 5 parts by mass of lactic acid and 90 parts by mass of ethylene glycol and reacting at 70 ℃ for 3 hours.
In a specific embodiment, the pH of the fracturing fluid is from 1 to 3.
The second aspect of the invention provides the use of a fracturing fluid according to any of the first aspects of the invention in acid fracturing of carbonate reservoirs (e.g. marine carbonate reservoirs).
The invention has the beneficial effects that:
the fracturing fluid is an inorganic strong acid fracturing fluid, is particularly suitable for deep acid fracturing modification, solves the problems of high pH value and weak acid etching capability caused by adopting organic weak acid in the conventional acid guanidine gum fracturing fluid, can better etch a carbonate reservoir, realizes seepage of the fluid to the far end of the reservoir, enhances the acid etching capability, prolongs the action distance of acid liquor and achieves the technical effect of effectively increasing the yield.
Detailed Description
The present invention is further illustrated by the following examples, which are intended to be purely exemplary of the invention and are not to be construed as limiting the invention in any way.
Preparation of the crosslinking agent: 5 parts by mass of zirconium oxychloride, 5 parts by mass of lactic acid and 90 parts by mass of ethylene glycol are uniformly mixed and reacted at 70 ℃ for 3 hours to obtain the acidic organic zirconium cross-linking agent.
Example 1
Step 1.25 ℃, 220.8mL of tap water is placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 29.2mL of hydrochloric acid with 37 percent of mass fraction into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 2g of thickener carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 15mL of corrosion inhibitor propiolic alcohol imidazoline and 1.25mL of clay stabilizer octadecylamidopropyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid (or called as fracturing fluid gel).
Example 2
Step 1.25 ℃, 226.7mL of tap water is taken and placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 23.3mL of 37% mass fraction hydrochloric acid into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1.75g of thickening agent carboxymethyl hydroxypropyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl hydroxypropyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 12.5mL of corrosion inhibitor propiolic alcohol imidazoline and 1.25mL of octadecyl amide propyl trimethyl ammonium methyl carbonate serving as a clay stabilizer into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 3
Step 1.25 ℃, putting 232.6mL of tap water into a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 17.4mL of hydrochloric acid with 37 mass percent into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1.5g of thickening agent carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 10mL of corrosion inhibitor propiolic alcohol imidazoline and 1.25mL of clay stabilizer octadecylamidopropyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid gel.
Example 4
Step 1.25 ℃, putting 238.5mL of tap water into a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 11.5mL of hydrochloric acid with 37 percent of mass fraction into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1.25g of thickener carboxymethyl hydroxypropyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl hydroxypropyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 7.5mL of corrosion inhibitor propiolic alcohol imidazoline and 1.25mL of octadecyl amide propyl trimethyl ammonium methyl carbonate serving as a clay stabilizer into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 5
Step 1.25 ℃, 244.3mL of tap water is placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 5.7mL of hydrochloric acid with the mass fraction of 37% into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1g of thickening agent carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 5mL of corrosion inhibitor propiolic alcohol imidazoline and 1.25mL of clay stabilizer octadecylamidopropyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the first acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 6
Step 1.25 ℃, 247.9mL of tap water is placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 2.1mL of 37 mass percent hydrochloric acid into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1g of thickening agent carboxymethyl hydroxypropyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl hydroxypropyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 2.5mL of corrosion inhibitor hexynol imidazoline and 1mL of octadecyl amide propyl trimethyl ammonium methyl carbonate serving as a clay stabilizer into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.5mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 7
Step 1.25 ℃, putting 249.8mL of tap water into a 500mL container;
step 2, adding 0.2mL of 37 mass percent hydrochloric acid into water in a container under the stirring condition of 400 revolutions per minute, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1g of thickening agent carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 1.25mL of corrosion inhibitor hexynol imidazoline and 1mL of octadecyl amide propyl trimethyl ammonium methyl carbonate serving as a clay stabilizer into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.5mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 8
Step 1.25 ℃, putting 249.98mL of tap water into a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 0.02mL of hydrochloric acid with the mass fraction of 37% into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1g of thickener carboxymethyl hydroxypropyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl hydroxypropyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 1.25mL of corrosion inhibitor hexynol imidazoline and 0.75mL of clay stabilizer octadecyl amide propyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 0.75mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.5mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 9
Step 1.25 ℃, 214.2mL of tap water is placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 35.8mL of 31 mass percent hydrochloric acid into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 2g of thickening agent carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 15mL of corrosion inhibitor hexynol imidazoline and 1.25mL of octadecyl amide propyl trimethyl ammonium methyl carbonate serving as a clay stabilizer into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are complete to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, stirring uniformly, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 10
Step 1.25 ℃, 228.8mL of tap water is placed in a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 21.2mL of 31% mass fraction hydrochloric acid into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1.5g of thickening agent carboxymethyl hydroxypropyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl hydroxypropyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 10mL of corrosion inhibitor hexynol imidazoline and 1.25mL of clay stabilizer octadecyl amide propyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are completely dissolved to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, uniformly stirring, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
Example 11
Step 1.25 ℃, putting 243mL of tap water into a 500mL container;
step 2, under the condition of stirring at 400 revolutions per minute, adding 7mL of hydrochloric acid with the mass fraction of 31% into water in a container, uniformly stirring to obtain 250mL of hydrochloric acid aqueous solution, adding 1g of thickener carboxymethyl guar gum into the hydrochloric acid aqueous solution, and continuously stirring until the carboxymethyl guar gum is completely dissolved in the water to obtain a first acidic solution;
step 3, sequentially adding 5mL of corrosion inhibitor hexynol imidazoline and 1.25mL of clay stabilizer octadecyl amide propyl trimethyl ammonium methyl carbonate into the first acidic solution under the stirring state, and continuously stirring until the corrosion inhibitor and the clay stabilizer are complete to obtain a second acidic solution;
step 4, adding 1.25mL of cleanup additive hexafluoropropylene oxide into the second acidic solution, stirring uniformly, and standing for 30min to obtain a fracturing fluid base fluid;
and 5, adding 1.75mL of acidic organic zirconium cross-linking agent into the base fluid of the fracturing fluid, and uniformly stirring to obtain the fracturing fluid.
The fracturing fluid prepared in the embodiments is subjected to base fluid viscosity, pH value and fracturing fluid crosslinking and hanging performance experiments, and the specific experimental conditions and requirements are as follows: the fracturing fluid base fluid samples of each example were poured into six-speed rotational viscometers, respectively, and the viscosity was measured at 300 rpm, and the pH of each base fluid sample was measured using broad pH paper; and determining whether the fracturing fluid is a suspensible jelly. Through the above experiments, the results of the fracturing fluid performance experiments shown in table 1 were obtained.
TABLE 1
Examples viscosity/mPa & s of base fluid of fracturing fluid pH value of base fluid of fracturing fluid Crosslinking Properties
Example 1 72 1 Crosslinkable hanging
Example 2 78 1 Cross-linkable hanging device
Example 3 81 1 Crosslinkable hanging
Example 4 84 1 Cross-linkable hanging device
Example 5 90 1 Cross-linkable hanging device
Example 6 93 1 Crosslinkable hanging
Example 7 102 2 Crosslinkable hanging
Example 8 111 3 Cross-linkable hanging device
Example 9 75 1 Cross-linkable hanging device
Example 10 81 1 Cross-linkable hanging device
Example 11 84 1 Crosslinkable hanging
As is clear from the experimental results in Table 1, the fracturing fluids prepared in the above embodiments of the present invention have high base fluid viscosity and low pH value under different hydrochloric acid concentrations, and can be crosslinked to form a suspension-able gel. Therefore, the invention can resist the hydrochloric acid concentration as high as 5 percent, and can be widely suitable for the deep acid fracturing modification of oil and gas reservoirs under various working conditions, in particular to the deep acid fracturing modification of high-temperature carbonate reservoirs.
While the invention has been described with reference to specific embodiments, those skilled in the art will appreciate that various changes can be made without departing from the true spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation, material, composition of matter, and method to the essential scope of the invention. All such modifications are intended to be included within the scope of the present invention as defined in the appended claims.

Claims (10)

1. A fracturing fluid comprises HCl, a thickening agent, a cleanup additive, a clay stabilizer, a corrosion inhibitor, a cross-linking agent and the balance of water, wherein the mass/volume content of the thickening agent is 0.4-0.8%, the volume/volume content of the corrosion inhibitor is 0.5-6.0%, the volume/volume content of the clay stabilizer is 0.3-0.5%, the volume/volume content of the cleanup additive is 0.3-0.5%, and the volume/volume content of the cross-linking agent is 0.6-0.7%, based on the volume of a hydrochloric acid aqueous solution with the mass concentration of 0.0000365-5% as 100%.
2. The fracturing fluid of claim 1, wherein the viscosifying agent is carboxymethyl guar and/or carboxymethyl hydroxypropyl guar.
3. The fracturing fluid of claim 1 or 2, wherein the cleanup additive is hexafluoropropylene oxide.
4. The fracturing fluid of any of claims 1 to 3, wherein the clay stabilizer is octadecylamidopropyl trimethyl ammonium methyl carbonate.
5. The fracturing fluid of any of claims 1 to 4, wherein the corrosion inhibitor is an imidazoline based corrosion inhibitor.
6. The fracturing fluid of any of claims 1 to 5, wherein the corrosion inhibitor is a propargyl alcohol imidazoline and/or a hexynol imidazoline.
7. The fracturing fluid of any of claims 1 to 6, wherein the crosslinker is an organozirconium based crosslinker.
8. The fracturing fluid of any one of claims 1 to 7, wherein the cross-linking agent is an acidic organic zirconium cross-linking agent obtained by uniformly mixing 5 parts by mass of zirconium oxychloride, 5 parts by mass of lactic acid and 90 parts by mass of ethylene glycol and reacting at 70 ℃ for 3 hours.
9. The fracturing fluid of any of claims 1 to 8, wherein the pH of the fracturing fluid is from 1 to 3.
10. Use of a fracturing fluid according to any of claims 1 to 9 in acid fracturing of carbonate reservoirs.
CN202110766728.5A 2021-07-07 2021-07-07 Acidic guanidine gum fracturing fluid and application thereof Pending CN115595137A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102352235A (en) * 2011-08-03 2012-02-15 西安长庆化工集团有限公司 Crosslinked acid fracturing fluid and preparation method thereof
CN102702424A (en) * 2012-05-25 2012-10-03 西南石油大学 Zwitterionic polymer, preparation method of zwitterionic polymer and application in hydrochloric acid-base fracturing fluid
CN103756663A (en) * 2013-12-17 2014-04-30 常州大学 High performance acidizing fracturing fluid and preparation method thereof
CN110291174A (en) * 2017-02-13 2019-09-27 沙特阿拉伯石油公司 Thickening proppant and its preparation and application for carbon dioxide-base fracturing fluid
CN111676008A (en) * 2020-06-05 2020-09-18 中国石油大学(北京) Acidic fracturing fluid and preparation method and application thereof
CN112280548A (en) * 2019-07-24 2021-01-29 中国石油天然气股份有限公司 Artificial polymer fracturing liquid system prepared from thickened oil hot water and application of artificial polymer fracturing liquid system in field of reservoir transformation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102352235A (en) * 2011-08-03 2012-02-15 西安长庆化工集团有限公司 Crosslinked acid fracturing fluid and preparation method thereof
CN102702424A (en) * 2012-05-25 2012-10-03 西南石油大学 Zwitterionic polymer, preparation method of zwitterionic polymer and application in hydrochloric acid-base fracturing fluid
CN103756663A (en) * 2013-12-17 2014-04-30 常州大学 High performance acidizing fracturing fluid and preparation method thereof
CN110291174A (en) * 2017-02-13 2019-09-27 沙特阿拉伯石油公司 Thickening proppant and its preparation and application for carbon dioxide-base fracturing fluid
CN112280548A (en) * 2019-07-24 2021-01-29 中国石油天然气股份有限公司 Artificial polymer fracturing liquid system prepared from thickened oil hot water and application of artificial polymer fracturing liquid system in field of reservoir transformation
CN111676008A (en) * 2020-06-05 2020-09-18 中国石油大学(北京) Acidic fracturing fluid and preparation method and application thereof

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