CN108084984B - A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir - Google Patents
A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir Download PDFInfo
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- CN108084984B CN108084984B CN201711266892.XA CN201711266892A CN108084984B CN 108084984 B CN108084984 B CN 108084984B CN 201711266892 A CN201711266892 A CN 201711266892A CN 108084984 B CN108084984 B CN 108084984B
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- guanidine
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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
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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
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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
- C09K8/885—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The invention discloses a kind of agent for releasing that reduction guanidine gum fracturing fluid is injured in sandstone reservoir, and be made of by weight percentage following components: salt 10-22%, softener 2-6%, hydrogen bond disrupting agent 5-15%, methanol 5-15%, remaining is water.The salt is the arbitrary proportion mixture of one or both of NaCl, KCl.The softener is one of cocoanut fatty acid diethanolamide, glycerine polyoxyethylene poly-oxygen propylene aether, aliphatic amine polyoxyethylene ether, two or three of arbitrary proportion mixture.The hydrogen bond disrupting agent is trihydroxy methyl (amino) methane.The principle of the invention is reliable, and service efficiency is high, eliminates between guanidine glue and guanidine glue from the root; active force between guanidine glue and rock avoids reducing cost and protection environment excessively using additive in fracturing process; the defect and deficiency for overcoming the prior art, have a vast market application prospect.
Description
Technical field
The invention belongs to oil and gas development fields, and in particular to a kind of during oil and gas storey increase design
Guanidine gum fracturing fluid can be reduced in the agent for releasing of rock formation absorption injury.
Technical background
As oil gas energy development constantly promotes, low-porosity and low-permeability reservoir starts to be increasingly becoming Exploration of Oil And Gas and exploitation
Mainstream object.Low-porosity and low-permeability reservoir in the past because cost limitation can not carry out commercial development, but with waterpower in recent years
The rapid development of the stimulation technologies such as pressure break, the exploitation for such petroleum resources provide important leverage.
Hydraulic fracturing is combined using high pressure pump truck, and fracturing fluid is pumped into reservoir production to be greater than the discharge capacity of reservoir fracture pressure
Raw man-made fracture.Enter high velocity stream of the reservoir formation with one fixed width and length all since fracturing fluid needs to carry proppant
Road, so viscosity with higher is needed to guarantee migration of the proppant in pit shaft and crack.
Currently, guanidine gum fracturing fluid is due to the advantages such as at low cost, high-efficient, technical maturity, in occupation of domestic and international fracturing liquid
The leading position of system.The main component of guanidine gum fracturing fluid system includes: water, guanidine glue, fungicide, expansion-resisting agent, crosslinking agent and the row of helping
Agent etc., the main function of guanidine glue be as fracturing fluid system thickening agent increase fracturing fluid viscosity, guarantee pressing crack construction it is smooth into
Row.But a large amount of outside fluids enter stratum and fracturing fluid and formation fluid and rock can be made to generate physical-chemical reaction, cause
Formation damage.Liao Li et al. (the super low concentration guanidine gum fracturing fluid such as Liao Li Soviet Union Sulige gas field application study drilling technique,
2013, volume 36, the 5th phase) find that guanidine glue has stronger adsorption capacity, can be adsorbed on blowhole surface under study for action,
Pore throat radius is caused to reduce, permeability reduction.Xu Lin waits people quietly, and (Xu Lin waits guanidine gum fracturing fluid quietly to permeability of reservoir
The Xinjiang damage character petroleum geology, 2016, volume 37, the 4th phase) think that guanidine gum fracturing fluid is main to the injury of rock core matrix
It is divided into water phase injury and the injury of guanidine glue Adsorption And Retention, wherein guanidine glue Adsorption And Retention injury accounting is up to 43.6%.
The country has scholar to carry out the research for low damage fracture liquid system, patent of invention " low damage fracture in recent years
Liquid system " (ZL200910091732.5) is mainly by reducing thickener concentration and the dosage to conventional additive in fracturing fluid
It optimizes, realizes the purpose for reducing reservoir damage.Patent of invention " a kind of fracturing fluid with low damage and preparation method thereof "
(ZL201110311137.5) by continuing the concentration of guanidine glue in reduction fracturing fluid, addition surfactant realizes guanidine glue laminated and splits
Liquid system residue rate is greatly reduced.Patent of invention " a kind of Low Damage small molecule guanidine gum fracturing fluid " (ZL201110263461.4)
By reducing guanidine xanthan molecule amount, the control to guanidine gum fracturing fluid injury is realized.But above-mentioned several method is inherently logical
The dosage of reduction guanidine glue is crossed to realize the reduction of injury, there is no the solutions for truly proposing that guanidine glue does not injure in reservoir to do
Method more removes measures without what proposition guanidine glue adsorbed on rock wall surface.
Biological enzyme is broken glue by patent of invention " a method of reduce guanidine gum fracturing fluid residue " (CN201110199310.7)
Agent GLZ-1 is added in guanidine gum fracturing fluid, which breaks glue within the scope of pH7-14,40-70 DEG C of temperature, will be crosslinked guanidine
Glue is degraded to the breaking glue solution containing polysaccharide, monosaccharide and residue；Biological enzyme breaker dosage be guanidine gum fracturing fluid weight ten thousand/
0.1-0.5；Microorganism gram-Negative bacillus BH-21 is added in breaking glue solution, microorganism gram-Negative bacillus BH-21 with
Biological enzyme breaking glue solution is nutrient source, and at 40-70 DEG C, ferment 24-48h, breaking glue solution and residue is converted into small-molecule substance, into one
Walk the undegradable residue of degradation biological enzyme；Microorganism BH-21 is using highly effective biological zyme breaking glue solution as the broken of nutrient source fermentation 48h processing
Glue level of residue reduces 50% than the highly effective biological zyme breaking glue solution level of residue without microbiological treatment, reduces to a certain extent
The injury of guanidine glue residue glue and residue to reservoir, but there is no release.
The present invention is based on what is acted on guanidine glue and rock to fully realize, and selects suitable chemical agent, reduces or releases
Active force between guanidine glue and rock prevents guanidine glue from acting on rock, will not be detained between hole, can flow out ground with fluid
Layer, thus ponding of the guanidine glue to rock can be reduced from the root.
Summary of the invention
The purpose of the present invention is to provide a kind of agent for releasing that reduction guanidine gum fracturing fluid is injured in sandstone reservoir, the agent for releasing
Principle is reliable, and service efficiency is high, eliminates between guanidine glue and guanidine glue from the root, the active force between guanidine glue and rock avoids pressing
Excessively cost and protection environment are reduced, the defect and deficiency of the prior art are overcome, is had wide using additive during splitting
Market application prospect.
To reach the above technical purpose, the present invention provides following technical scheme.
The active force of guanidine glue and sandstone is mainly electrostatic force, Van der Waals force and hydrogen bond, agent for releasing provided by the invention
These three power can be effectively reduced, to reduce injury of the guanidine glue to reservoir, improve correctional effect.
A kind of agent for releasing for reducing guanidine gum fracturing fluid and injuring in sandstone reservoir, is made of by weight percentage following components:
Salt 10-22%, softener 2-6%, hydrogen bond disrupting agent 5-15%, methanol 5-15%, remaining is water.
The salt is the arbitrary proportion mixture of one or both of NaCl, KCl.
The softener is cocoanut fatty acid diethanolamide, glycerine polyoxyethylene poly-oxygen propylene aether, fatty amine are poly-
One of ethylene oxide ether, two or three of arbitrary proportion mixture.
The hydrogen bond disrupting agent is trihydroxy methyl (amino) methane.
After guanidine gum fracturing fluid is injected into stratum, by the effect of gel breaker, guanidine xanthan molecule chain is interrupted, become molecular weight from
Molecular fragment of the hundreds of thousands to tens, these fragments still maintain the mannose of guanidine glue and the structure feature of gala sugar chain, and
And containing a large amount of hydroxyl group on sugar chain, between hydroxyl group and hydroxyl group and rock can pass through the electrostatic of non-covalent bond
Active force, the effect of the forms such as Van der Waals force, hydrogen bond cause sugar chain mutually to wind agglomerating or be adsorbed on rock surface, block rock
Hole shout, seriously restrict the flowing of formation fluid, prevent pressure after production capacity from reaching expected.The present invention is using targetedly
Chemical agent, reduces or eliminates between the hydroxyl on guanidine xanthan molecule chain or the non-covalent bond with rock from mechanism, avoids guanidine glue
It is agglomerating or be adsorbed on rock surface in hole is shouted.In the present invention, salt can be acted on by way of coordinate bond with guanidine xanthan molecule, be made
Guanidine glue chain in system has charge, effectively weakens the electrostatic interaction of guanidine xanthan molecule interchain；Softener can be stretched with guanidine xanthan molecule chain
Exhibition, avoids its agglomerating, while can change rock surface is oleophylic, and hydrophilic hydroxyl groups and rock the generation hydrogen bond weakened on guanidine glue is made
With；Hydrogen bond disrupting agent will destroy established hydrogen bond between guanidine glue and rock, and the maximum amount of hydrogen bond reduced between guanidine glue and rock is made
With, reduce adsorbance, while make between guanidine xanthan molecule, the hydrogen bond of intramolecular is also destroyed, avoid guanidine glue agglomerating, block rock
Hole.
Compared with prior art, the present invention is based on to guanidine xanthan molecule active force in aqueous solution and guanidine xanthan molecule and rock
Effect precisely recognize on the basis of, these active forces are released using suitable chemical agent.Existing reduction fracturing fluid is to stratum
Injury method be delay of the general processing fracturing fluid in rock, increase the dosage of gel breaker, by the molecular weight of guanidine glue
That drops is lower.But these methods only reduce capillary force of the water in micro hole is shouted according to traditional means, with hole
The reduction shouted, capillary force can rapidly increase, and simple latex cleanup additive can not play the role of effective.It is broken using increasing
The method of jelly influences whether the performance of fracturing fluid, and gel breaker under formation conditions can not be thoroughly by guanidine xanthan molecule chain
It destroys, also has the guanidine xanthan molecule residual of some macromoleculars, these macromoleculars agglomerating blocking oil gas easily in the hole on stratum is shouted
Channel.And the present invention is eliminated from the root between guanidine glue and guanidine glue, the active force between guanidine glue and rock, avoids fracturing process
In excessively use additive, reduce cost and protection environment.
Detailed description of the invention
Fig. 1 is resume permeability curve of the embodiment 1 using rear compact rock core.
Fig. 2 is resume permeability curve of the embodiment 4 using rear compact rock core.
Specific embodiment
The present invention is further illustrated below by drawings and examples.
Embodiment 1
57kg water is added in a kettle, is added with stirring 10kgNaCl and 15kg trihydroxy methyl (amino) methane, stirs
15kg methanol is added after uniformly, is eventually adding 3kg cocoanut fatty acid diethanolamide, discharges after mixing.
Embodiment 2
57kg water is added in a kettle, is added with stirring 12kgNaCl and 10kgKCl, 8kg trihydroxy methyl (amino) first
Alkane is stirring evenly and then adding into 9kg methanol, is eventually adding 2kg cocoanut fatty acid diethanolamide and 2kg glycerine polyoxyethylene
Polyethenoxy ether discharges after mixing.
Embodiment 3
60kg water is added in a kettle, is added with stirring 22kgKCl, 5kg trihydroxy methyl (amino) methane stirs evenly
7kg methanol is added afterwards, is eventually adding 3kg aliphatic amine polyoxyethylene ether and 3kg glycerine polyoxyethylene poly-oxygen propylene aether, mixing is equal
Discharging after even.
Embodiment 4
52kg water is added in a kettle, is added with stirring 16kgKCl, 15kg trihydroxy methyl (amino) methane, stirring is
15kg methanol is added after even, is eventually adding 2kg glycerine polyoxyethylene poly-oxygen propylene aether, discharges after mixing.
Embodiment 5
66kg water is added in a kettle, is added with stirring 15kgNaCl, 9kg trihydroxy methyl (amino) methane, stirring is
5kg methanol is added after even, is eventually adding 2kg cocoanut fatty acid diethanolamide and 3kg aliphatic amine polyoxyethylene ether, mixing is equal
Discharging after even.
Agent for releasing prepared by embodiment 1 and embodiment 4 is used in test effect in the tight sand of the western reservoir in river, as a result
As shown in Figure 1 and Figure 2.
It can be seen from the figure that after agent for releasing is added, by the permeability after the permeability ratio injury of fracturing fluid injury rock core
50% or more is improved, shows that the present invention reduces the agent for releasing that guanidine gum fracturing fluid injures and guanidine glue can be effectively reduced to the wound of reservoir
Evil, the in-place permeability after improving pressure.
Claims (3)
1. a kind of agent for releasing for reducing guanidine gum fracturing fluid and injuring in sandstone reservoir, is made of: salt by weight percentage following components
10-22%, softener 2-6%, hydrogen bond disrupting agent 5-15%, methanol 5-15%, remaining is water；The salt is one of NaCl, KCl
Or two kinds of arbitrary proportion mixture.
2. a kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir as described in claim 1, which is characterized in that institute
Softener is stated as in cocoanut fatty acid diethanolamide, glycerine polyoxyethylene poly-oxygen propylene aether, aliphatic amine polyoxyethylene ether
One kind, two or three of arbitrary proportion mixture.
3. a kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir as described in claim 1, which is characterized in that institute
Stating hydrogen bond disrupting agent is trihydroxy methyl (amino) methane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711266892.XA CN108084984B (en) | 2017-12-05 | 2017-12-05 | A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711266892.XA CN108084984B (en) | 2017-12-05 | 2017-12-05 | A kind of agent for releasing for reducing guanidine gum fracturing fluid and being injured in sandstone reservoir |
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| CN108084984A CN108084984A (en) | 2018-05-29 |
| CN108084984B true CN108084984B (en) | 2019-01-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112094632B (en) * | 2020-10-21 | 2022-03-11 | 西南石油大学 | Nano harm-removing agent and preparation method thereof |
| CN116218504B (en) * | 2022-12-12 | 2024-09-03 | 河南天祥新材料股份有限公司 | Fracturing fluid capable of effectively reducing adsorption of guanidine gum on rock surface and preparation method thereof |
| CN117925210B (en) * | 2024-03-19 | 2024-05-28 | 四川兰冠能源科技有限公司 | Nanometer desorption agent and preparation method and application thereof |
Citations (3)
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| CN101875839A (en) * | 2009-04-30 | 2010-11-03 | 中国石油天然气股份有限公司 | Multifunctional preparation for controlling biological corrosion and blockage of oil field production system |
| CN104277818A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Drag reducer for fracturing fluid and application thereof |
| CN104371684A (en) * | 2014-10-27 | 2015-02-25 | 西安石油大学 | Polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent and blockage removal technology |
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2017
- 2017-12-05 CN CN201711266892.XA patent/CN108084984B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875839A (en) * | 2009-04-30 | 2010-11-03 | 中国石油天然气股份有限公司 | Multifunctional preparation for controlling biological corrosion and blockage of oil field production system |
| CN104277818A (en) * | 2013-07-09 | 2015-01-14 | 中国石油化工股份有限公司 | Drag reducer for fracturing fluid and application thereof |
| CN104371684A (en) * | 2014-10-27 | 2015-02-25 | 西安石油大学 | Polyhydroxyl hydrolyzed micelle acidolysis blockage removal agent and blockage removal technology |
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Effective date of registration: 20221128 Address after: No.8 Xindu Avenue, Xindu District, Chengdu, Sichuan 610000 Patentee after: SOUTHWEST PETROLEUM University Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 610500, Xindu Avenue, Xindu District, Sichuan, Chengdu, 8 Patentee before: SOUTHWEST PETROLEUM University |