CN117683528A - Preparation process and method of high-temperature antiscale fracturing system - Google Patents
Preparation process and method of high-temperature antiscale fracturing system Download PDFInfo
- Publication number
- CN117683528A CN117683528A CN202311681288.9A CN202311681288A CN117683528A CN 117683528 A CN117683528 A CN 117683528A CN 202311681288 A CN202311681288 A CN 202311681288A CN 117683528 A CN117683528 A CN 117683528A
- Authority
- CN
- China
- Prior art keywords
- fracturing
- temperature
- fluid
- liquid
- fanggou
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002360 preparation method Methods 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 64
- 239000004576 sand Substances 0.000 claims abstract description 44
- 238000002156 mixing Methods 0.000 claims abstract description 26
- 239000002562 thickening agent Substances 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 claims abstract description 11
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004927 clay Substances 0.000 claims abstract description 7
- 239000001103 potassium chloride Substances 0.000 claims abstract description 7
- 235000011164 potassium chloride Nutrition 0.000 claims abstract description 7
- 239000003381 stabilizer Substances 0.000 claims abstract description 7
- 239000000654 additive Substances 0.000 claims abstract description 5
- 230000000996 additive effect Effects 0.000 claims abstract description 5
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 74
- 238000003860 storage Methods 0.000 claims description 36
- 239000003981 vehicle Substances 0.000 claims description 24
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 8
- -1 polyoxyethylene Polymers 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- OKIZCWYLBDKLSU-UHFFFAOYSA-M N,N,N-Trimethylmethanaminium chloride Chemical compound [Cl-].C[N+](C)(C)C OKIZCWYLBDKLSU-UHFFFAOYSA-M 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000006184 cosolvent Substances 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 3
- NSGXIBWMJZWTPY-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropane Chemical compound FC(F)(F)CC(F)(F)F NSGXIBWMJZWTPY-UHFFFAOYSA-N 0.000 claims description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-N Betaine Natural products C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 claims description 2
- 239000004593 Epoxy Substances 0.000 claims description 2
- KWIUHFFTVRNATP-UHFFFAOYSA-O N,N,N-trimethylglycinium Chemical compound C[N+](C)(C)CC(O)=O KWIUHFFTVRNATP-UHFFFAOYSA-O 0.000 claims description 2
- 229960003237 betaine Drugs 0.000 claims description 2
- 235000019864 coconut oil Nutrition 0.000 claims description 2
- 239000003240 coconut oil Substances 0.000 claims description 2
- 229940043237 diethanolamine Drugs 0.000 claims description 2
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 2
- 150000002191 fatty alcohols Chemical class 0.000 claims description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 claims description 2
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 2
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 2
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 229940083037 simethicone Drugs 0.000 claims description 2
- DUFCMRCMPHIFTR-UHFFFAOYSA-N 5-(dimethylsulfamoyl)-2-methylfuran-3-carboxylic acid Chemical compound CN(C)S(=O)(=O)C1=CC(C(O)=O)=C(C)O1 DUFCMRCMPHIFTR-UHFFFAOYSA-N 0.000 claims 2
- HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical group O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 claims 2
- 229940009827 aluminum acetate Drugs 0.000 claims 2
- 230000004048 modification Effects 0.000 abstract description 5
- 238000012986 modification Methods 0.000 abstract description 5
- 238000010008 shearing Methods 0.000 abstract description 4
- 239000013530 defoamer Substances 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 37
- 238000003756 stirring Methods 0.000 description 22
- 239000003921 oil Substances 0.000 description 10
- 235000019198 oils Nutrition 0.000 description 9
- 239000008399 tap water Substances 0.000 description 8
- 235000020679 tap water Nutrition 0.000 description 8
- 238000001816 cooling Methods 0.000 description 4
- 238000005303 weighing Methods 0.000 description 3
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a preparation process and a preparation method of a high Wen Fanggou fracturing system, and particularly relates to the field of oilfield fracturing, wherein the preparation process comprises the following components in percentage by weight: cleaning a fracturing fluid thickening agent, wherein the content of the fracturing fluid thickening agent is 0.2-0.7%; 0.2 to 1.2 percent of cross-linking agent; clay stabilizer, 0.2-0.5%; 0.2 to 0.5 percent of cleanup additive; 0.01 to 0.2 percent of ammonium persulfate; potassium chloride, 0.5-5% and water for the rest. The fracturing fluid prepared by the preparation process has the advantages of convenient preparation of high-temperature-resistant clean fracturing fluid, good temperature resistance and shearing resistance, no residue after gel breaking, meeting the requirements of low-permeability and high-temperature reservoir fracturing modification, and being matched with a fracturing method, the high-temperature-resistant recoverable clean fracturing fluid of a gas well can realize continuous blending sand fracturing construction; after the fracturing construction is finished, quantitative defoamer is added into the flowback fluid and stirred, the flowback fluid can be reused for preparing fracturing fluid, and green and environment-friendly production and sustainable development of a gas field are ensured.
Description
Technical Field
The invention relates to a preparation process of a high Wen Fanggou fracturing system and a fracturing method using the process, which are mainly used for avoiding residue after fracturing a gas well, thereby avoiding the improvement operation of polluting the gas well.
Background
High temperature, hypotonic reservoirs are often encountered during the fracturing reformation of oil and gas fields. The conventional surfactant fracturing fluid cannot resist high temperature, and after gel breaking, the guanidine gum fracturing fluid has partial residues, so that the damage to the reservoir is large, and the fracturing fluid is not suitable for fracturing modification of high-temperature low-permeability reservoir.
Fracturing is a specialized technique commonly used for oil reservoir reformation to increase production. Fracturing refers to a method for forming a crack in an oil layer by utilizing the hydraulic action in the oil extraction process, and is also called as oil layer hydraulic fracturing. The oil layer fracturing process is to squeeze high pressure liquid with certain viscosity into the oil layer with a fracturing truck. When the oil layer is pressed out of a plurality of cracks, propping agents (such as quartz sand and the like) are added to fill the cracks, so that the permeability of the oil layer is improved, and the water injection rate (a water injection well) or the oil production (an oil well) is increased.
However, in the existing fracturing method for gas well operation, partial residues exist in the fracturing fluid after gel breaking, damage to a reservoir is large, and the fracturing fluid is not suitable for fracturing modification of a high-temperature low-permeability reservoir, so that a preparation process and a preparation method of a high Wen Fanggou fracturing system are provided.
Disclosure of Invention
The invention provides a preparation process and a preparation method of a high Wen Fanggou fracturing system, which are used for solving the problems that partial residues exist in fracturing fluid after gel breaking, the damage to a reservoir is large, and the fracturing fluid is not suitable for fracturing modification of a high-temperature low-permeability reservoir.
In order to achieve the above purpose, the present invention provides the following technical solutions: the preparation process of the high-temperature antiscale fracturing system comprises the following components in percentage by weight: 0.2 to 0.7 percent of high-temperature resistant clean fracturing fluid thickener; 0.2 to 1.2 percent of cross-linking agent; clay stabilizer, 0.2-0.5%; 0.2 to 0.5 percent of cleanup additive; 0.01 to 0.1 percent of ammonium persulfate; potassium chloride, 0.5-5%; the balance being water. Firstly, adding clear water into a liquid preparation tank according to a certain proportion, starting stirring, and uniformly scattering a high-temperature-resistant clean fracturing fluid thickening agent. After the thickener is completely dispersed, adding the clay stabilizer and the cleanup additive, and stirring for more than 20 minutes after the materials are added, so that the materials are uniformly mixed.
Preferably, the fracturing method of the preparation process of the high Wen Fanggou fracturing system comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
Preferably, the defoaming agent consists of the following components in percentage by mass: 0.2 of fatty alcohol polyoxyethylene ether and simethicone.
Preferably, the thickening agents are prepared from the following raw materials in percentage by mass: 35% -55%, 3-trimeric epoxy hexafluoropropane amidopropyl betaine; 10% -25% of coconut oil fatty acyl diethanol amine; 1% -5% of cosolvent; the balance being water.
Preferably, the cosolvent is a mixture of methanol and isopropanol, and the mass ratio of the methanol to the isopropanol is 1:3-1:10.
The invention has the beneficial effects that:
the preparation process and the method of the high Wen Fanggou fracturing system provided by the invention have the advantages that the preparation of the high-temperature-resistant clean fracturing fluid is convenient, the temperature-resistant shearing performance is good, no residue exists after gel breaking, the requirements of low permeability and high-temperature reservoir fracturing transformation are met, and the continuous blending sand fracturing construction can be realized by adopting the high-temperature-resistant recoverable clean fracturing fluid of a gas well by matching with the fracturing method; after the fracturing construction is finished, quantitative defoamer is added into the flowback fluid and stirred, the flowback fluid can be reused for preparing fracturing fluid, and green and environment-friendly production and sustainable development of a gas field are ensured.
Detailed Description
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The high Wen Fanggou fracturing system provided in this example 1 was prepared by:
a1000 ml beaker was taken, 493ml of tap water was measured, and stirring was started. Weighing 2g of high-temperature resistant clean fracturing fluid thickener, uniformly scattering the thickener into tap water under stirring, continuously stirring for 5 minutes after the thickener is added, then adding 2.5g of 10% tetramethyl ammonium chloride aqueous solution, 2.5g of polyoxyethylene alkylphenol ether and 2.5g of potassium chloride, uniformly stirring, stopping stirring, and waiting for use.
100ml of the mixture is taken, 0.6g of cross-linking agent is added, and the mixture is stirred to form gel, and the gel can be picked up by glass after 20 seconds. 50g of the gel of the example 1 is taken, the viscosity is 130mPa.S after shearing at 90 ℃ for 170S-1 for 90min, the requirements of fracturing construction can be completely met, and the gel can be used as a fracturing fluid formula of reservoirs below 90 ℃.
The embodiment 1 also provides a fracturing method of the fracturing fluid prepared by the preparation process: the method comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
Example 2
The high Wen Fanggou fracturing system provided in this example 2 was prepared by:
a1000 ml beaker was taken, 493ml of tap water was measured, and stirring was started. 3g of high-temperature resistant clean fracturing fluid thickener is weighed and uniformly scattered into tap water under stirring, after the thickener is added, stirring is continued for 5 minutes, then 2.5g of quaternary ammonium salt clay stabilizer, 2.5g of nonionic fluorocarbon surfactant and 2g of potassium chloride are added, stirring is stopped after uniform stirring, and the mixture is waited for use.
100ml of the mixture is taken, 1.0g of cross-linking agent is added, and the mixture is stirred to form gel, and the gel can be picked up by glass after 60 seconds. 50g of the gel of the example 1 is taken, the viscosity is 55mPa.S after shearing for 120min at 150 ℃ and 170S-1, the requirements of fracturing construction can be completely met, and the gel can be used as a fracturing fluid formula of reservoirs with the temperature of more than 90 ℃ and below 150 ℃.
The embodiment 2 also provides a fracturing method of the fracturing fluid prepared by the preparation process: the method comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
Example 3
The high Wen Fanggou fracturing system provided in this example 3 was prepared by:
a1000 ml beaker was taken, 493ml of tap water was measured, and stirring was started. Weighing 2g of high-temperature resistant clean fracturing fluid thickener, uniformly scattering the thickener into tap water under stirring, continuously stirring for 5 minutes after the thickener is added, then adding 2.5g of 10% tetramethyl ammonium chloride aqueous solution and 2.5g of polyoxyethylene alkylphenol ether and 2.2g of potassium chloride, uniformly stirring, stopping stirring, and waiting for use.
100ml of the mixture was taken, 0.6g of a crosslinking agent and 0.07g of ammonium persulfate were added thereto and stirred, whereby a gel was formed. And putting the gel into a 90 ℃ oven, taking out after 4 hours, cooling to room temperature, and waiting for use. The final cooling of example 3 was taken and its viscosity measured at 20℃was less than 5 Pa.S and its residue measured at less than 50mg/L. The viscosity is low after gel breaking, the residue is less, and the damage to stratum is small.
This example 3 also provides a fracturing method of the fracturing fluid prepared by the preparation process: the method comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
Example 4
The high Wen Fanggou fracturing system provided in this example 4 was prepared by:
a1000 ml beaker was taken, 493ml of tap water was measured, and stirring was started. Weighing 2g of high-temperature resistant clean fracturing fluid thickener, uniformly scattering the thickener into tap water under stirring, continuously stirring for 5 minutes after the thickener is added, then adding 2.5g of 10% tetramethyl ammonium chloride aqueous solution and 2.5g of polyoxyethylene alkylphenol ether and 2.5g of potassium chloride, uniformly stirring, stopping stirring, and waiting for use.
100ml of the mixture was taken, 0.5g of a crosslinking agent and 0.05g of ammonium persulfate were added thereto and stirred, whereby a gel was formed. And putting the gel into a 90 ℃ oven, taking out after 4 hours, cooling to room temperature, and waiting for use. The final cooling of example 3 was taken and its viscosity measured at 20℃was less than 5 Pa.S and its residue measured at less than 50mg/L. The viscosity is low after gel breaking, the residue is less, and the damage to stratum is small.
The embodiment 4 also provides a fracturing method of the fracturing fluid prepared by the preparation process: the method comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (8)
1. The preparation process of the high-temperature antiscale fracturing system is characterized by comprising the following steps of: the preparation process comprises the following components in percentage by weight: cleaning a fracturing fluid thickening agent, wherein the content of the fracturing fluid thickening agent is 0.2-0.7%; 0.2 to 1.2 percent of cross-linking agent; clay stabilizer, 0.2-0.5%; 0.2 to 0.5 percent of cleanup additive; 0.01 to 0.2 percent of ammonium persulfate; potassium chloride, 0.5-5% and water for the rest.
2. The process for preparing a high Wen Fanggou fracturing system according to claim 1, wherein: the cross-linking agent is aluminum acetate, zirconium acetate or a mixture of the aluminum acetate and the zirconium acetate.
3. The process for preparing a high Wen Fanggou fracturing system according to claim 1, wherein: the clay stabilizer is a 10% tetramethyl ammonium chloride aqueous solution or a quaternary ammonium salt clay stabilizer.
4. The process for preparing a high Wen Fanggou fracturing system according to claim 1, wherein: the cleanup additive is nonionic fluorocarbon surfactant, polyoxyethylene alkylphenol ether or a mixture thereof.
5. The process for preparing a high Wen Fanggou fracturing system according to claims 1-4, wherein: the fracturing method of the preparation process of the high Wen Fanggou fracturing system comprises the following specific steps:
s1, preparing fracturing fluid through the preparation process components;
s2, pumping the high-temperature-resistant recyclable clean fracturing fluid of the gas well into a sand mixing vehicle;
s3, carrying out sand fracturing construction on a high-temperature-resistant recoverable clean fracturing hydraulic gas inlet well stratum of a gas well in a sand mixing vehicle at the temperature of 0-130 ℃;
s4, after the sand fracturing construction is completed, obtaining fracturing flowback fluid, and enabling the fracturing flowback fluid to enter a liquid storage tank after sand removal and gas-liquid separation;
s5, adding a defoaming agent with the mass fraction of 0.02% -0.8% into the liquid storage tank, circulating for 5 minutes, detecting the viscosity of the liquid in the liquid storage tank at the ground 25 ℃, and adding a thickening agent into the liquid storage tank until the viscosity of the liquid in the liquid storage tank is at least 25 mPa.s if the viscosity is less than 25 mPa.s;
s6, pumping the liquid in the liquid storage tank in the S5 into a sand mixing vehicle, supplying the liquid into a fracturing truck through the sand mixing vehicle, injecting the liquid into a well by the fracturing truck, and fracturing the ground to perform fracturing construction;
and S7, repeating the step S4-6 to finish the recycling of the high-temperature-resistant recoverable clean fracturing fluid of the gas well.
6. The process for preparing a high Wen Fanggou fracturing system according to claim 5, wherein: the defoaming agent comprises the following components in percentage by mass: 0.2 of fatty alcohol polyoxyethylene ether and simethicone.
7. The process for preparing a high Wen Fanggou fracturing system according to claim 5, wherein: the thickener consists of the following raw materials in percentage by mass: 35% -55%, 3-trimeric epoxy hexafluoropropane amidopropyl betaine; 10% -25% of coconut oil fatty acyl diethanol amine; 1% -5% of cosolvent; the balance being water.
8. The process for preparing a high Wen Fanggou fracturing system according to claim 7, wherein: the cosolvent is a mixture of methanol and isopropanol, and the mass ratio of the methanol to the isopropanol is 1:3-1:10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681288.9A CN117683528A (en) | 2023-12-08 | 2023-12-08 | Preparation process and method of high-temperature antiscale fracturing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311681288.9A CN117683528A (en) | 2023-12-08 | 2023-12-08 | Preparation process and method of high-temperature antiscale fracturing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117683528A true CN117683528A (en) | 2024-03-12 |
Family
ID=90131210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311681288.9A Pending CN117683528A (en) | 2023-12-08 | 2023-12-08 | Preparation process and method of high-temperature antiscale fracturing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117683528A (en) |
-
2023
- 2023-12-08 CN CN202311681288.9A patent/CN117683528A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107365574A (en) | A kind of viscosity reduction oil displacement agent for common heavy oil reservoir and preparation method thereof | |
| CN103642476A (en) | Shale gas exploitation oil-based drilling fluid well-cementing prepad fluid | |
| CN107652955B (en) | Efficient environment-friendly thickened oil organic scale dispersion blockage removing system and preparation method thereof | |
| CN114835866B (en) | Nano microemulsion oil displacement agent for low-permeability oil reservoir and preparation method thereof | |
| CN109826590B (en) | Water plugging and fracturing method for high-water-content old well in low-permeability oil and gas field | |
| CN111042794A (en) | Carbon dioxide fracturing construction process for normal-pressure sand mixing | |
| CN105255475A (en) | Recycling method for guanidine gum fracturing flow-back fluid | |
| CN108049855A (en) | A kind of MH acid construction technology suitable for sandstone reservoir transformation | |
| CN111621276A (en) | Solid acid plugging agent and method for removing stratum plugging by using same | |
| CN101024764A (en) | Surface activating agent for oil-field thick-oil well | |
| CN108587587B (en) | High-strength degradable temporary plugging ball for oil and gas well as preparation method and application of temporary plugging ball | |
| CN106010496A (en) | CO2 energy-increasing acid clean fracturing fluid and preparation method thereof | |
| CN117683528A (en) | Preparation process and method of high-temperature antiscale fracturing system | |
| CN108949132B (en) | Sand consolidation and blockage removal treatment fluid for sand prevention of fine silt reservoir oil well, sand prevention treatment fluid system and sand prevention method using sand consolidation and blockage removal treatment fluid system | |
| CN108913115B (en) | Low-damage composite fracturing fluid and application method thereof | |
| CN111594124A (en) | Shallow tight oil reservoir imbibition fracturing method, fracturing system for shallow tight oil reservoir and discharge-free imbibition fracturing fluid | |
| CN116814234A (en) | Discharge assisting agent for fracturing and preparation method and application thereof | |
| RU2386665C1 (en) | Heat-resistant viscoelastic composition for finishing and repairing wells | |
| CN112708404B (en) | Micro-emulsion temporary plugging agent for acidification, and preparation method and application thereof | |
| CN110872508B (en) | Non-crosslinked fracturing fluid and preparation method and application thereof | |
| CN114686200B (en) | Dry-method and acidification integrated double-thickening fracturing method, fracturing fluid and preparation method thereof | |
| CN104449651A (en) | Gemini surfactant water-based recoverable fracturing fluid for oil well and preparation method thereof | |
| CN104861957A (en) | Recoverable instant thickening acid | |
| CN111100290B (en) | Vegetable oil asphalt cation amide resin with double functions of anti-swelling and sand control | |
| CN115109576B (en) | Fracturing fluid system and fracturing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication |