CN103881688A - Low-damage clean fracturing fluid for oil well of oil field and application of low-damage clean fracturing fluid - Google Patents
Low-damage clean fracturing fluid for oil well of oil field and application of low-damage clean fracturing fluid Download PDFInfo
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- CN103881688A CN103881688A CN201410090328.7A CN201410090328A CN103881688A CN 103881688 A CN103881688 A CN 103881688A CN 201410090328 A CN201410090328 A CN 201410090328A CN 103881688 A CN103881688 A CN 103881688A
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- fracturing fluid
- low
- oil
- clean fracturing
- oil well
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- 239000012530 fluid Substances 0.000 title claims abstract description 54
- 239000003129 oil well Substances 0.000 title claims abstract description 28
- 230000006378 damage Effects 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims abstract description 24
- ABBQHOQBGMUPJH-UHFFFAOYSA-M Sodium salicylate Chemical compound [Na+].OC1=CC=CC=C1C([O-])=O ABBQHOQBGMUPJH-UHFFFAOYSA-M 0.000 claims abstract description 24
- 229960004025 sodium salicylate Drugs 0.000 claims abstract description 24
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 23
- 208000027418 Wounds and injury Diseases 0.000 claims description 41
- 208000014674 injury Diseases 0.000 claims description 41
- 239000007788 liquid Substances 0.000 claims description 30
- 239000004615 ingredient Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 7
- 239000000654 additive Substances 0.000 description 5
- 230000000996 additive effect Effects 0.000 description 5
- 244000007835 Cyamopsis tetragonoloba Species 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910021538 borax Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000013530 defoamer Substances 0.000 description 4
- -1 hydroxypropyl Chemical group 0.000 description 4
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000004328 sodium tetraborate Substances 0.000 description 4
- 235000010339 sodium tetraborate Nutrition 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229920013818 hydroxypropyl guar gum Polymers 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention provides a low-damage clean fracturing fluid for an oil well of an oil field. The low-damage clean fracturing fluid for the oil well of the oil field comprises the following components in percentage by mass: 0.7 to 1.8 weight percent of hexadecyl trimethyl ammonium bromide, 0.7 to 0.9 weight percent of auxiliary agent sodium salicylate, and the balance of water. The low-damage clean fracturing fluid for the oil well of the oil field has thorough gel breaking and high flowback rate, can solve the problems that the gel breaking of the fracturing fluid is not thorough after the gel breaking of the stratum and the crack channels are blocked by residues in the fracturing modification process of the oil layer, reduces the damage of the fracturing fluid to the oil layer, improves the reserve and recovery rate of low-permeability oil reservoirs and increases the yield.
Description
Technical field
The present invention relates to the low injury clean fracturing fluid of a kind of oilfield and application thereof, belong to LOW PERMEABILITY RESERVOIR formation fracturing additive technology field.
Background technology
Domestic each elephant, in the time that tuff reservoir oil layer is transformed, adopts fracturing liquid to mainly contain two kinds, i.e. conventional hydroxypropyl guar gum and high temperature hydroxypropyl guar gum at present at present.These two kinds of fracturing liquids after the broken glue in stratum, exist broken glue in various degree thoroughly with the problem such as residue obstruction duct, crack.Therefore aspect formation fracturing transformation, need the key technical problem solving is how to reduce the injury problem of fracturing liquid to oil reservoir.
Summary of the invention
In view of the defect that above-mentioned prior art exists, the object of the invention is to propose the low injury clean fracturing fluid of a kind of oilfield, can solve in formation fracturing transformation process fracturing liquid and after the broken glue in stratum, exist broken glue not thoroughly and the problem in residue obstruction duct, crack.
Object of the present invention is achieved by the following technical programs:
The low injury clean fracturing fluid of a kind of oilfield, by percentage to the quality, comprises following moiety:
Cetyl trimethylammonium bromide 0.7wt%-1.8wt%, auxiliary agent sodium salicylate 0.7wt%-0.9wt%, its surplus is water.
In the low injury clean fracturing fluid of above-mentioned oilfield, preferred, by percentage to the quality, this fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 0.7wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
The present invention also provides the application in oil well fracturing operation of the low injury clean fracturing fluid of oilfield that mentioned component consists of " cetyl trimethylammonium bromide 0.7wt%; auxiliary agent sodium salicylate 0.7wt%; its surplus is water ", preferably, to be applied to downhole temperature be 45 DEG C of following oil wells to this fracturing liquid.
In the low injury clean fracturing fluid of above-mentioned oilfield, preferred, by percentage to the quality, this fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 0.8wt%, and auxiliary agent sodium salicylate 0.9wt%, its surplus is water.
The present invention also provides said components for the low injury clean fracturing fluid of oilfield of " cetyl trimethylammonium bromide 0.8wt%; auxiliary agent sodium salicylate 0.9wt%; its surplus the is water " application in oil well fracturing operation, preferably, to be applied to downhole temperature be the oil well of 45 DEG C-50 DEG C to this fracturing liquid.
In the low injury clean fracturing fluid of above-mentioned oilfield, preferred, by percentage to the quality, fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 1.2wt%, and auxiliary agent sodium salicylate 0.8wt%, its surplus is water.
The present invention also provides said components for the low injury clean fracturing fluid of oilfield of " cetyl trimethylammonium bromide 1.2wt%; auxiliary agent sodium salicylate 0.8wt%; its surplus the is water " application in oil well fracturing operation, preferably, to be applied to downhole temperature be the oil well of 50 DEG C-60 DEG C to this fracturing liquid.
In the low injury clean fracturing fluid of above-mentioned oilfield, preferred, by percentage to the quality, fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 1.8wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
The present invention also provides said components for the low injury clean fracturing fluid of oilfield of " cetyl trimethylammonium bromide 1.8wt%; auxiliary agent sodium salicylate 0.7wt%; its surplus the is water " application in oil well fracturing operation, preferably, to be applied to downhole temperature be the oil well of 60 DEG C-70 DEG C to this fracturing liquid.
The low injury clean fracturing fluid of oilfield provided by the invention is by cetyl trimethylammonium bromide and sodium salicylate are mixed, then soluble in water preparing.
While adopting the low injury clean fracturing fluid of oilfield of the present invention, broken glue is more thorough, the row of returning leads high, can solve fracturing liquid in formation fracturing transformation process exists broken glue not thoroughly and the problem in residue obstruction duct, crack after the broken glue in stratum, reduce the injury of fracturing liquid to oil reservoir, improve LOW PERMEABILITY RESERVOIR mining-employed reserves and recovery ratio, increase output.
Embodiment
Below just the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Embodiment 1
The present embodiment provides a kind of oilfield low injury clean fracturing fluid, by percentage to the quality, is made up of following ingredients: cetyl trimethylammonium bromide 0.7wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
The present embodiment is taking hypotonic low pressure heavy crude reservoir Naiman oilfield as embodiment oil field, and this oil field porosity is 14.6%, and rate of permeation is 12.2 × 10
-3μ m
2, strong water-sensitive,, easily there is proppant embedment in reservoir rock Young's modulus low (on average at 11000-16000MPa), affects fracture flow capacity, and bottom pressure factor is low, and viscosity of crude is large.
Cetyl trimethylammonium bromide and auxiliary agent sodium salicylate are injected in water, mix, prepare low injury clean fracturing fluid, then by this fracturing liquid of 200-300 side with 3.5-4.5 side/minute flow velocity be injected in the oil well in the present embodiment oil field, carry out frac job, oil well temperature is in 45 DEG C.
Above-mentioned low injury clean fracturing fluid is implemented the row of returning after operation, and average individual well returns row and leads and reach 61.5%.
Carry out frac job taking conventional fracturing liquid as contrast, by weight percentage, the of the fracturing fluid component of this routine is: 0.44-0.47wt% hydroxypropyl guar, 0.20-0.25wt% cleanup additive, 0.03-0.10wt% formaldehyde, 0.02-0.05wt% defoamer, 0.08-0.10wt% alkali, 0.06wt% expansion-resisting agent, 0.015wt% borax, surplus are water.The row of returning after the present embodiment oil field operation, it is 30% that the row of returning leads.
The row of returning of the low injury clean fracturing fluid of visible the present embodiment leads than the conventional of the fracturing fluid row of returning and leads and improved 31.5%.
Embodiment 2
The present embodiment provides a kind of oilfield low injury clean fracturing fluid, by percentage to the quality, is made up of following ingredients: cetyl trimethylammonium bromide 0.8wt%, and auxiliary agent sodium salicylate 0.9wt%, its surplus is water.
The present embodiment is taking hypotonic low pressure heavy crude reservoir Naiman oilfield as embodiment oil field, and this oil field porosity is 14.6%, and rate of permeation is 12.2 × 10
-3μ m
2, strong water-sensitive,, easily there is proppant embedment in reservoir rock Young's modulus low (on average at 11000-16000MPa), affects fracture flow capacity, and bottom pressure factor is low, and viscosity of crude is large.
Cetyl trimethylammonium bromide and auxiliary agent sodium salicylate are injected in water, mix, prepare low injury clean fracturing fluid, then by this fracturing liquid of 200-300 side with 3.5-4.5 side/minute flow velocity be injected in the oil well in the present embodiment oil field, carry out frac job, oil well temperature is 45 DEG C-50 DEG C.
Above-mentioned low injury clean fracturing fluid is implemented the row of returning after operation, and average individual well returns row and leads and reach 57.2%.
Carry out frac job taking conventional fracturing liquid as contrast, by weight percentage, the of the fracturing fluid component of this routine is: 0.44-0.47wt% hydroxypropyl guar, 0.20-0.25wt% cleanup additive, 0.03-0.10wt% formaldehyde, 0.02-0.05wt% defoamer, 0.08-0.10wt% alkali, 0.06wt% expansion-resisting agent, 0.015wt% borax, surplus are water.The row of returning after the present embodiment oil field operation, it is 30% that the row of returning leads.
The row of returning of the low injury clean fracturing fluid of visible the present embodiment leads than the conventional of the fracturing fluid row of returning and leads and improved 27.2%.
Embodiment 3
The present embodiment provides a kind of oilfield low injury clean fracturing fluid, by percentage to the quality, is made up of following ingredients: cetyl trimethylammonium bromide 1.2wt%, and auxiliary agent sodium salicylate 0.8wt%, its surplus is water.
The present embodiment is taking hypotonic low pressure heavy crude reservoir Naiman oilfield as embodiment oil field, and this oil field porosity is 14.6%, and rate of permeation is 12.2 × 10
-3μ m
2, strong water-sensitive,, easily there is proppant embedment in reservoir rock Young's modulus low (on average at 11000-16000MPa), affects fracture flow capacity, and bottom pressure factor is low, and viscosity of crude is large.
Cetyl trimethylammonium bromide and auxiliary agent sodium salicylate are injected in water, mix, prepare low injury clean fracturing fluid, then by this fracturing liquid of 200-300 side with 3.5-4.5 side/minute flow velocity be injected in the oil well in the present embodiment oil field, carry out frac job, oil well temperature is 50 DEG C-60 DEG C.
Above-mentioned low injury clean fracturing fluid is implemented the row of returning after operation, and average individual well returns row and leads and reach 53.9%.
Carry out frac job taking conventional fracturing liquid as contrast, by weight percentage, the of the fracturing fluid component of this routine is: 0.44-0.47wt% hydroxypropyl guar, 0.20-0.25wt% cleanup additive, 0.03-0.10wt% formaldehyde, 0.02-0.05wt% defoamer, 0.08-0.10wt% alkali, 0.06wt% expansion-resisting agent, 0.015wt% borax, surplus are water.The row of returning after the present embodiment oil field operation, it is 30% that the row of returning leads.
The row of returning of the low injury clean fracturing fluid of visible the present embodiment leads than the conventional of the fracturing fluid row of returning and leads and improved 23.9%.
Embodiment 4
The present embodiment provides a kind of oilfield low injury clean fracturing fluid, by percentage to the quality, is made up of following ingredients: cetyl trimethylammonium bromide 1.8wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
The present embodiment is taking hypotonic low pressure heavy crude reservoir Naiman oilfield as embodiment oil field, and this oil field porosity is 14.6%, and rate of permeation is 12.2 × 10
-3μ m
2, strong water-sensitive,, easily there is proppant embedment in reservoir rock Young's modulus low (on average at 11000-16000MPa), affects fracture flow capacity, and bottom pressure factor is low, and viscosity of crude is large.
Cetyl trimethylammonium bromide and auxiliary agent sodium salicylate are injected in water, mix, prepare low injury clean fracturing fluid, then by this fracturing liquid of 200-300 side with 3.5-4.5 side/minute flow velocity be injected in the oil well in the present embodiment oil field, carry out frac job, oil well temperature is 60 DEG C-70 DEG C.
Above-mentioned low injury clean fracturing fluid is implemented the row of returning after operation, and average individual well returns row and leads and reach 62.7%.
Carry out frac job taking conventional fracturing liquid as contrast, by weight percentage, the of the fracturing fluid component of this routine is: 0.44-0.47wt% hydroxypropyl guar, 0.20-0.25wt% cleanup additive, 0.03-0.10wt% formaldehyde, 0.02-0.05wt% defoamer, 0.08-0.10wt% alkali, 0.06wt% expansion-resisting agent, 0.015wt% borax, surplus are water.The row of returning after the present embodiment oil field operation, it is 30% that the row of returning leads.
The row of returning of the low injury clean fracturing fluid of visible the present embodiment leads than the conventional of the fracturing fluid row of returning and leads and improved 32.7%.
Claims (9)
1. the low injury clean fracturing fluid of oilfield, by percentage to the quality, comprises following moiety:
Cetyl trimethylammonium bromide 0.7wt%-1.8wt%, auxiliary agent sodium salicylate 0.7wt%-0.9wt%, its surplus is water.
2. the low injury clean fracturing fluid of oilfield according to claim 1, is characterized in that:
By percentage to the quality, described fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 0.7wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
3. the low injury clean fracturing fluid of oilfield according to claim 1, is characterized in that:
By percentage to the quality, described fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 0.8wt%, and auxiliary agent sodium salicylate 0.9wt%, its surplus is water.
4. the low injury clean fracturing fluid of oilfield according to claim 1, is characterized in that:
By percentage to the quality, described fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 1.2wt%, and auxiliary agent sodium salicylate 0.8wt%, its surplus is water.
5. the low injury clean fracturing fluid of oilfield according to claim 1, is characterized in that:
By percentage to the quality, described fracturing liquid is made up of following ingredients, cetyl trimethylammonium bromide 1.8wt%, and auxiliary agent sodium salicylate 0.7wt%, its surplus is water.
6. the application of the low injury clean fracturing fluid of oilfield claimed in claim 2 in oil well fracturing operation, is characterized in that: it is 45 DEG C of following oil wells that this fracturing liquid is applied to downhole temperature.
7. the application of the low injury clean fracturing fluid of oilfield claimed in claim 3 in oil well fracturing operation, is characterized in that: it is the oil well of 45 DEG C-50 DEG C that this fracturing liquid is applied to downhole temperature.
8. the application of the low injury clean fracturing fluid of oilfield claimed in claim 4 in oil well fracturing operation, is characterized in that: it is the oil well of 50 DEG C-60 DEG C that this fracturing liquid is applied to downhole temperature.
9. the application of the low injury clean fracturing fluid of oilfield claimed in claim 5 in oil well fracturing operation, is characterized in that: it is the oil well of 60 DEG C-70 DEG C that this fracturing liquid is applied to downhole temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090328.7A CN103881688A (en) | 2014-03-12 | 2014-03-12 | Low-damage clean fracturing fluid for oil well of oil field and application of low-damage clean fracturing fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410090328.7A CN103881688A (en) | 2014-03-12 | 2014-03-12 | Low-damage clean fracturing fluid for oil well of oil field and application of low-damage clean fracturing fluid |
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| Publication Number | Publication Date |
|---|---|
| CN103881688A true CN103881688A (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410090328.7A Pending CN103881688A (en) | 2014-03-12 | 2014-03-12 | Low-damage clean fracturing fluid for oil well of oil field and application of low-damage clean fracturing fluid |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147733A (en) * | 2015-04-02 | 2016-11-23 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN108611082A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | Clean fracturing fluid and preparation method thereof |
| CN110257040A (en) * | 2019-04-24 | 2019-09-20 | 山东科技大学 | It is a kind of for the clean fracturing liquid system of coal-bed flooding and its application |
| CN116163699A (en) * | 2023-04-21 | 2023-05-26 | 太原理工大学 | Underground preparation device and method for viscoelastic surfactant fracturing fluid |
| CN116410729A (en) * | 2023-04-07 | 2023-07-11 | 西安石油大学 | Efficient low-damage clean fracturing fluid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439691A (en) * | 2003-01-24 | 2003-09-03 | 大庆油田有限责任公司 | Harmless fracturing fluids |
| CN101362943A (en) * | 2008-09-15 | 2009-02-11 | 青岛生物能源与过程所 | Preparation of novel thermal resistant and shearing resistant clean fracturing fluid thickener by long chain quaternary ammonium salt containing 18-40 carbon number |
-
2014
- 2014-03-12 CN CN201410090328.7A patent/CN103881688A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1439691A (en) * | 2003-01-24 | 2003-09-03 | 大庆油田有限责任公司 | Harmless fracturing fluids |
| CN101362943A (en) * | 2008-09-15 | 2009-02-11 | 青岛生物能源与过程所 | Preparation of novel thermal resistant and shearing resistant clean fracturing fluid thickener by long chain quaternary ammonium salt containing 18-40 carbon number |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147733A (en) * | 2015-04-02 | 2016-11-23 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN106147733B (en) * | 2015-04-02 | 2019-03-12 | 中国石油天然气股份有限公司 | Water plugging composition and preparation method and application thereof |
| CN108611082A (en) * | 2016-12-13 | 2018-10-02 | 中国石油天然气股份有限公司 | Clean fracturing fluid and preparation method thereof |
| CN110257040A (en) * | 2019-04-24 | 2019-09-20 | 山东科技大学 | It is a kind of for the clean fracturing liquid system of coal-bed flooding and its application |
| CN116410729A (en) * | 2023-04-07 | 2023-07-11 | 西安石油大学 | Efficient low-damage clean fracturing fluid and preparation method thereof |
| CN116163699A (en) * | 2023-04-21 | 2023-05-26 | 太原理工大学 | Underground preparation device and method for viscoelastic surfactant fracturing fluid |
| CN116163699B (en) * | 2023-04-21 | 2023-06-30 | 太原理工大学 | Underground preparation device and method for viscoelastic surfactant fracturing fluid |
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Application publication date: 20140625 |