CN110437816A - A kind of efficiently connection fracturing fluid with low damage - Google Patents
A kind of efficiently connection fracturing fluid with low damage Download PDFInfo
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- CN110437816A CN110437816A CN201910691640.4A CN201910691640A CN110437816A CN 110437816 A CN110437816 A CN 110437816A CN 201910691640 A CN201910691640 A CN 201910691640A CN 110437816 A CN110437816 A CN 110437816A
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- fracturing fluid
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/62—Compositions for forming crevices or fractures
- C09K8/66—Compositions based on water or polar solvents
- C09K8/68—Compositions based on water or polar solvents containing organic compounds
- C09K8/685—Compositions based on water or polar solvents containing organic compounds containing cross-linking agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/86—Compositions based on water or polar solvents containing organic compounds
- C09K8/88—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/90—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
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Abstract
The invention discloses a kind of efficiently connection fracturing fluid with low damage, according to mass percent number meter: the thickening agent including 25%-65%, the crosslinking agent of 15%-45%, the PH regulator of 0.06%-1%, the clay stabilizer of 0.1%-0.3%, the cleanup additive of 0.8%-2%, the Waterproof lock agent of 0.5%-2%, the fungicide of 0.01%-0.06%, the gel breaker of 0.01%-0.05% and the water of 40%-60%, this fracturing fluid uses instant guar gum (super HPG), swelling time is less than 3min, meet continuous mixture, save supplies consumption, frozen glue is in good condition, adjustable delay crosslinking time, frictional resistance is effectively reduced, powder-type blocking agent, it realizes in seam, it is turned at many levels between seam, form complicated seam net, promote fine and close oil gas correctional effect, By setting one of montmorillonite, kaolin, illite or chlorite or a variety of for clay stabilizer, by starting with from anatomy differed clay mineral Injury Mechanism, take Counter-techniques means, damage of clay minerals caused by control outside fluid to the greatest extent, to guarantee matrix permeability.
Description
Technical field
The present invention relates to fracturing fluid technical field, specially a kind of efficiently connection fracturing fluid with low damage.
Background technique
Petroleum is the grand strategy goods and materials of country, plays very important work for the politics of country, economic development
The 50% of national land oil yield is accounted for like upper with, Daqing oil field oil production rate, is made a great contribution for country.But pass through 40
Remaining exploitation, Daqing oil field are also faced with very big crisis, first is that oil field enters late high water content period, exploitation difficulty is big, exploitation at
This height;Second is that reserved resources are insufficient, proved reserves are unbalance with recoverable reserves, if things go on like this, will enter and do not spread out out, seriously restrict oil field
Development, therefore the exploitation of petroleum needs to carry out fracturing reform can be only achieved considerable commercial hydrocarbon flow, acquisition business extraction value,
Pressure break needs to use fracturing fluid, and fracturing fluid is broadly divided into oil base fracturing fluid, aqueous fracturing fluid and three kinds of foam fracturing fluid, water base pressure
Split liquid due to it is at low cost, be used widely using safe.
The cross-linking efficiency of existing fracturing fluid is more low, and injury caused by clay swell and migration is larger, for this purpose, I
Propose a kind of efficiently connection fracturing fluid with low damage.
Summary of the invention
It is mentioned above in the background art to solve the purpose of the present invention is to provide a kind of efficiently connection fracturing fluid with low damage
Problem.
To achieve the above object, the invention provides the following technical scheme: a kind of efficiently join fracturing fluid with low damage, according to quality
Percentage number meter: the thickening agent including 25%-65%, the crosslinking agent of 15%-45%, the PH regulator of 0.06%-1%, 0.1%-0.3%'s
Clay stabilizer, the cleanup additive of 0.8%-2%, the Waterproof lock agent of 0.5%-2%, the fungicide of 0.01%-0.06%, 0.01%-0.05%
Gel breaker and 40%-60% water；
Fracturing fluid the preparation method comprises the following steps:
(1) proportionally, water, the thickening agent of 25%-65% and the crosslinking agent of 15%-45% of 40%-60% are added into reaction kettle,
It is thoroughly mixed it at 200r/min.
(2) be added into solution obtained in the first step crosslinking agent of 15%-45%, 0.06%-2% PH regulator,
The clay stabilizer of 0.1%-0.3%, the cleanup additive of 0.8%-2%, the Waterproof lock agent of 0.5%-2% and the gel breaker of 0.01%-0.05%,
The high-speed stirred mixing of 1000r/min is carried out to it again；
(3) the PH regulator of 0.06%-1% is added in the solution into step 2, makes solution in alkalescent, continues to it
1000r/min's is stirred；
(4) into the solution of step 3 kind be added 0.01%-0.06% fungicide and be stirred to get to efficiently connection and it is low
The fracturing fluid of injury.
Preferably, the clay stabilizer is one of montmorillonite, kaolin, illite or chlorite or a variety of.
Preferably, the fungicide is surfactant.
Preferably, the thickening agent be hydroxypropyl guar, super HPG, CMHPG or hydroxypropyl carboxy methyl guanidine glue one kind or
It is a variety of.
Preferably, the crosslinking agent is organic boron or organic zirconium crosslinker.
Preferably, the surfactant is cationic surfactant, anionic surfactant or non-ionic surface
One of activating agent is a variety of.
Preferably, the PH regulator is sodium carbonate.
Preferably, the gel breaker is the mixture of potassium peroxydisulfate and ammonium persulfate.
The beneficial effects of the present invention are:
1, by the present invention in that with instant guar gum (super HPG), swelling time is less than 3min, meets continuous mixture, saves material
Consumption, frozen glue is in good condition, and delay crosslinking time is adjusted, frictional resistance is effectively reduced, passes through conventional cleanup additive and Waterproof lock agent
It is used in combination, the row's of returning efficiency can greatly be improved, to guarantee matrix-man-made fracture system high flow conductivity, pressure break is fine
Dimension, borehole ball, grain-type water shutoff agent, powder-type blocking agent are realized in seam, are turned at many levels between seam, are formed complicated seam net, are promoted fine and close
Oil gas correctional effect.
2, the present invention by by clay stabilizer be set as one of montmorillonite, kaolin, illite or chlorite or
It is a variety of, traditional single clay stabilizer is changed to compound clay stabilizer (take into account and prevent swollen and anti-migration needs), passes through cleanup additive
It is formd with Waterproof lock agent and efficiently helps isostere system (efficient cleanup additive and the agent of micro emulsion lyolysis water lock), the joint of salt resistance oil resistant cleanup additive
Using fracturing fluid recovery (backflow) efficiency is increased substantially, by starting with from anatomy differed clay mineral Injury Mechanism, specific aim skill is taken
Art means control damage of clay minerals caused by outside fluid, to guarantee matrix permeability to the greatest extent.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
Embodiment 1
1. a kind of efficiently connection fracturing fluid with low damage, which is characterized in that according to mass percent number meter: including 25% thickening agent,
15% crosslinking agent, 0.06% PH regulator, 0.1% clay stabilizer, 0.8% cleanup additive, 0.5% Waterproof lock agent,
0.01% fungicide, 0.01% gel breaker, 40% water；
Fracturing fluid the preparation method comprises the following steps:
(1) proportionally, into reaction kettle be added 40% water, 25% thickening agent and 15% crosslinking agent, make it in 200r/
It is thoroughly mixed under min.
(2) 15% crosslinking agent, 0.06% PH regulator, 0.1% clay are added into solution obtained in the first step
Stabilizer, 0.8% cleanup additive, 0.5% Waterproof lock agent and 0.01% gel breaker, carry out the high speed of 1000r/min to it again
It is stirred；
(3) 0.06% PH regulator is added in the solution into step 2, makes solution in alkalescent, continues to its 1000r/
Min's is stirred；
(4) 0.01% fungicide is added into the solution of step 3 kind and is stirred to get to efficiently connection and Low Damage
Fracturing fluid.
The clay stabilizer is one of montmorillonite, kaolin, illite or chlorite or a variety of.
The fungicide is surfactant.
The thickening agent is the one or more of hydroxypropyl guar, super HPG, CMHPG or hydroxypropyl carboxy methyl guanidine glue.
The crosslinking agent is organic boron or organic zirconium crosslinker.
The surfactant is in cationic surfactant, anionic surfactant or nonionic surfactant
It is one or more.
The PH regulator is sodium carbonate.
The gel breaker is the mixture of potassium peroxydisulfate and ammonium persulfate.
Embodiment 2
A kind of efficiently connection fracturing fluid with low damage, which is characterized in that according to mass percent number meter: the thickening agent including 25%-65%,
23% crosslinking agent, 0.1% PH regulator, 0.18% clay stabilizer, 1.2% cleanup additive, 0.8% Waterproof lock agent,
0.03% gel breaker and 50% water；
Fracturing fluid the preparation method comprises the following steps:
(1) proportionally, into reaction kettle be added 50% water, 30% thickening agent and 23% crosslinking agent, make it in 200r/
It is thoroughly mixed under min.
(2) 23% crosslinking agent, 0.1% PH regulator, 0.18% clay are added into solution obtained in the first step
Stabilizer, 1.2% cleanup additive, 0.8% Waterproof lock agent and 0.03% gel breaker, carry out the high speed of 1000r/min to it again
It is stirred；
(3) the PH regulator of 0.1% PH regulator is added in the solution into step 2, makes solution in alkalescent, continues pair
Its 1000r/min's is stirred；
(4) into the solution of step 3 kind be added 0.01%-0.06% fungicide and be stirred to get to efficiently connection and it is low
The fracturing fluid of injury.
The clay stabilizer is one of montmorillonite, kaolin, illite or chlorite or a variety of.
The fungicide is surfactant.
The thickening agent is the one or more of hydroxypropyl guar, super HPG, CMHPG or hydroxypropyl carboxy methyl guanidine glue.
The crosslinking agent is organic boron or organic zirconium crosslinker.
The surfactant is in cationic surfactant, anionic surfactant or nonionic surfactant
It is one or more.
The PH regulator is sodium carbonate.
The gel breaker is the mixture of potassium peroxydisulfate and ammonium persulfate.
Embodiment 3
2. a kind of efficiently connection fracturing fluid with low damage, which is characterized in that according to mass percent number meter: including 50% thickening agent,
40% crosslinking agent, 1% PH regulator, 0.3% clay stabilizer, 2% cleanup additive, 2% Waterproof lock agent, 0.06% sterilization
Agent, 0.05% gel breaker and 60% water；
Fracturing fluid the preparation method comprises the following steps:
(1) proportionally, into reaction kettle be added 60% water, 50% thickening agent and 45% crosslinking agent, make it in 200r/
It is thoroughly mixed under min.
(2) into solution obtained in the first step be added 45% crosslinking agent, 0.3% clay stabilizer, 2% the row of helping
Agent, 2% Waterproof lock agent, 0.06% fungicide and 0.05% gel breaker, the high-speed stirred of 1000r/min is carried out to it again
Mixing；
(3) 1% PH regulator is added in the solution into step 2, makes solution in alkalescent, continues to its 1000r/min's
It is stirred；
(4) 0.06% fungicide is added into the solution of step 3 kind and is stirred to get to efficiently connection and Low Damage
Fracturing fluid.
The clay stabilizer is one of montmorillonite, kaolin, illite or chlorite or a variety of.
The fungicide is surfactant.
The thickening agent is the one or more of hydroxypropyl guar, super HPG, CMHPG or hydroxypropyl carboxy methyl guanidine glue.
The crosslinking agent is organic boron or organic zirconium crosslinker.
The surfactant is in cationic surfactant, anionic surfactant or nonionic surfactant
It is one or more.
The PH regulator is sodium carbonate.
The gel breaker is the mixture of potassium peroxydisulfate and ammonium persulfate.
Test
The injury of fracturing fluid is tested:
Upper table experiments have shown that: in many factors, influence of the thickening agent dosage to broken glue residue is the most significant, by optimization be crosslinked
System reduces thickening agent dosage, thus in the broken glue residue for macroscopically reducing fracturing fluid.
Fracturing fluid injury is tested with control:
Upper table experiment can determine the cation exchange capacity (CEC) of clay mineral, determine whole cation concn in clay stabilizer, really
Determine clay type, and then adjust clay stabilizer composition and ratio, specific aim controls clay injury.
Efficiently postpone and low frictional resistance technical testing:
Borate crosslinker OB-315(is fast): more direct, blunt cross-linking reaction is provided, the frozen glue crosslinking of earth's surface is provided and takes grittiness
Can, part provides warm endurance of cutting energy；
Borate crosslinker OB-380(is slow): cross-linking reaction temperature controlled (being greater than 120 degree of actions) is provided, main heatproof is provided
Endurance of cutting energy ensures drop filter, seam and the solid-carrying performance of high temperature frozen glue；
The present apparatus greatly improves delay crosslinking time (3-5min, and being adjustable at room temperature not using distributed organic borate cross-linker
Crosslinking), to reduce pumping frictional resistance to greatest extent；Bull borate crosslinker structure greatly improves frozen glue heatproof energy simultaneously
Power meets superhigh temperature, the job requirements of ultradeep well.
Claims (8)
1. a kind of efficiently connection fracturing fluid with low damage, which is characterized in that according to mass percent number meter: the thickening including 25%-65%
Agent, the crosslinking agent of 15%-45%, the PH regulator of 0.06%-1%, the clay stabilizer of 0.1%-0.3%, the cleanup additive of 0.8%-2%,
The Waterproof lock agent of 0.5%-2%, the fungicide of 0.01%-0.06%, the gel breaker of 0.01%-0.05% and the water of 40%-60%；
Fracturing fluid the preparation method comprises the following steps:
(1) proportionally, water, the thickening agent of 25%-65% and the crosslinking agent of 15%-45% of 40%-60% are added into reaction kettle,
It is thoroughly mixed it at 200r/min；
(2) crosslinking agent of 15%-45%, PH regulator, the 0.1%- of 0.06%-2% are added into solution obtained in the first step
Cleanup additive, the Waterproof lock agent of 0.5%-2% and the gel breaker of 0.01%-0.05% of 0.3% clay stabilizer, 0.8%-2%, again
The high-speed stirred mixing of 1000r/min is carried out to it；
(3) the PH regulator of 0.06%-1% is added in the solution into step 2, makes solution in alkalescent, continues to it
1000r/min's is stirred；
(4) into the solution of step 3 kind be added 0.01%-0.06% fungicide and be stirred to get to efficiently connection and it is low
The fracturing fluid of injury.
2. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the clay stabilizer is to cover
One of de- soil, kaolin, illite or chlorite are a variety of.
3. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the fungicide is living for surface
Property agent.
4. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the thickening agent is hydroxypropyl
Guanidine glue, super HPG, CMHPG or hydroxypropyl carboxy methyl guanidine glue it is one or more.
5. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the crosslinking agent is organic boron
Or organic zirconium crosslinker.
6. a kind of efficiently connection fracturing fluid with low damage according to claim 3, it is characterised in that: the surfactant is sun
One of ionic surface active agent, anionic surfactant or nonionic surfactant are a variety of.
7. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the PH regulator is carbonic acid
Sodium.
8. a kind of efficiently connection fracturing fluid with low damage according to claim 1, it is characterised in that: the gel breaker is persulfuric acid
The mixture of potassium and ammonium persulfate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691640.4A CN110437816A (en) | 2019-07-29 | 2019-07-29 | A kind of efficiently connection fracturing fluid with low damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910691640.4A CN110437816A (en) | 2019-07-29 | 2019-07-29 | A kind of efficiently connection fracturing fluid with low damage |
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| Publication Number | Publication Date |
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| CN110437816A true CN110437816A (en) | 2019-11-12 |
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| CN201910691640.4A Pending CN110437816A (en) | 2019-07-29 | 2019-07-29 | A kind of efficiently connection fracturing fluid with low damage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457839A (en) * | 2020-12-09 | 2021-03-09 | 西南石油大学 | Multiphase hybrid guanidine gum fracturing fluid and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993688A (en) * | 2009-08-24 | 2011-03-30 | 中国石油天然气股份有限公司 | Low damage fracturing fluid system |
| CN104927830A (en) * | 2015-06-15 | 2015-09-23 | 中国石油集团西部钻探工程有限公司 | Waterproof lock fracturing fluid and preparation method thereof |
| CN108913115A (en) * | 2018-05-17 | 2018-11-30 | 大港油田集团有限责任公司 | A kind of Low Damage composite fracturing fluid and application method |
-
2019
- 2019-07-29 CN CN201910691640.4A patent/CN110437816A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993688A (en) * | 2009-08-24 | 2011-03-30 | 中国石油天然气股份有限公司 | Low damage fracturing fluid system |
| CN104927830A (en) * | 2015-06-15 | 2015-09-23 | 中国石油集团西部钻探工程有限公司 | Waterproof lock fracturing fluid and preparation method thereof |
| CN108913115A (en) * | 2018-05-17 | 2018-11-30 | 大港油田集团有限责任公司 | A kind of Low Damage composite fracturing fluid and application method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112457839A (en) * | 2020-12-09 | 2021-03-09 | 西南石油大学 | Multiphase hybrid guanidine gum fracturing fluid and preparation method thereof |
| CN112457839B (en) * | 2020-12-09 | 2022-06-03 | 西南石油大学 | Multiphase hybrid guanidine gum fracturing fluid and preparation method thereof |
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Application publication date: 20191112 |