CN105482799B - It is a kind of temporarily to block up diversion agent and preparation method thereof from degradation hydraulic fracturing - Google Patents
It is a kind of temporarily to block up diversion agent and preparation method thereof from degradation hydraulic fracturing Download PDFInfo
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- CN105482799B CN105482799B CN201510865845.1A CN201510865845A CN105482799B CN 105482799 B CN105482799 B CN 105482799B CN 201510865845 A CN201510865845 A CN 201510865845A CN 105482799 B CN105482799 B CN 105482799B
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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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5086—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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- 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
- C09K8/665—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
- C09K8/885—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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- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Diversion agent, including following components temporarily being blocked up from degradation hydraulic fracturing the present invention provides a kind of, the mass percent shared by each component and each component is：Plasticizer 1~10%；Modifying agent 0.05~2%；Accelerating agent 0.05~2%；Density adjuster 1~30%；Remaining group is divided into from degradation adhesive, and the adhesive of degradation certainly is polypropylene carbonate resin.The present invention additionally provides the above-mentioned preparation method that diversion agent is temporarily blocked up from degradation hydraulic fracturing simultaneously.It is provided by the invention temporarily to block up diversion agent from degradation hydraulic fracturing, solve deficiency in the prior art.Temporarily stifled diversion agent decomposition temperature is low, the time is short for the pressure break, and decomposition product will not cause secondary pollution.
Description
Technical field
Oily, gas well hydraulic fracturing temporarily stifled diversion agent and temporary stall of degrading certainly is can be applied to the present invention relates to a kind of
To the preparation method of agent, belong to oil-gas reservoir yield-increasing technology field.
Background technology
The temporary stall of pressure break temporarily blocks up established man-made fracture to being that diverting agent is added in real time in hydraulic fracturing process, compels
Make crack in other direction crack initiation extensions, expands fracturing reform volume, more naturally split to open new reservoir and link up
Seam increases drainage volume to improve fracturing transformation effect.In this technology, good temporarily stifled material is to realize effectively temporary stifled pressure
The key split.
Pressure break temporarily blocks up diversion agent usually and abbreviation pressure break diverting agent or pressure break diversion agent.Most-often used has oil-soluble pressure break
Temporarily stifled diversion agent and water-soluble pressure break temporarily block up two kinds of diversion agent.But both diversion agents are required for realizing solution by formation fluid
Stifled, in some reservoirs there may be the halfway problem of de-plugging, application is restricted.And it can be in formation temperature from degradable material
It is voluntarily decomposed under pressure condition, therefore applicability is more preferable.Currently, temporarily blocking up mainly making a living from degradable material for diversion agent as pressure break
A degree of degradation can occur under formation temperature, pressure condition for object degradable material.Due to the difference of material, stratum
Temperature has large effect to material degradation time and degradation rate.Patent CN101553552A discloses a variety of degradable materials
Material, includes the polymer and copolymer of lactide and glycolide.Patent CN103342881A and CN103342879A are also described
A kind of synthetic method of lipid degradation material.But these materials all have the shortcomings that decomposition temperature height, time length, and decompose
Product is also possible to cause a degree of secondary pollution to reservoir.
Invention content
Diversion agent temporarily being blocked up from degradation hydraulic fracturing the present invention provides a kind of, solves deficiency in the prior art.The pressure
Split temporarily that stifled diversion agent decomposition temperature is low, the time is short, decomposition product will not cause secondary pollution.
Technical solution is used by realizing above-mentioned purpose of the present invention：
It is a kind of temporarily to block up diversion agent, including following components, the quality shared by each component and each component from degradation hydraulic fracturing
Percentage is：Plasticizer 1~10%；Modifying agent 0.05~2%；Accelerating agent 0.05~2%；Density adjuster 1~30%；
Remaining group is divided into from degradation adhesive, and the adhesive of degradation certainly is polypropylene carbonate resin.
The plasticizer is nano-calcium carbonate.
The modifying agent is one or both of triethanolamine borate, three isopropyl ester of aluminic acid.
The accelerating agent is one kind in ethanol amine, ethylenediamine.
The density adjuster is one kind in sodium bromide, sodium chloride, potassium chloride, cesium formate.
The present invention additionally provides the above-mentioned preparation method that diversion agent is temporarily blocked up from degradation hydraulic fracturing, including following step simultaneously
Suddenly：
(1), plasticizer, modifying agent, accelerating agent, density adjuster and adhesive of degrading certainly are weighed by above-mentioned mass ratio,
The raw material is added in kneader after mixing by Screw Extrusion, segment, circle of the grain size between 0.5~5mm is obtained
Cylindrical particle, processing temperature are controlled at 160 DEG C or less；
(2), cylindrical pellet is poured into throw in particle circle-throw movement machine and is justified, the graininess of different-grain diameter is obtained according to size requirements
Finished product.
It is temporarily blocked up in diversion agent from degradation pressure break in the present invention in the present invention, the adhesive of degradation certainly is poly (propylene carbonate)
Resin.There are ester groups in polypropylene carbonate resin, susceptible to hydrolysis, and the presence of terminal hydroxyl makes it that there are esters alcoholysis, easily
It degrades in causing depolymerization at high temperature, thus there is good self-degradation energy.The plasticizer is nano-calcium carbonate.Nano-sized carbon
Sour calcium can improve the intensity of product, and since nano-calcium carbonate particles are sufficiently small, and the particle into formation pore throat again can be with
Drain outflow is returned, stratum will not be damaged.Heretofore described accelerating agent can be reduced from degradation adhesive at high temperature
Activation energy needed for degradation, to reduce its degradation temperature.
Based on above-mentioned condition, the application compared with prior art, has the effect of following prominent：
(1) it is low that diversion agent degradation temperature should be temporarily blocked up from degradation hydraulic fracturing, under the conditions of 160 DEG C, degradation rate in 24 hours
More than 50%.
(2) secondary pollution will not be caused to stratum after should temporarily blocking up diversion agent degradation from degradation hydraulic fracturing.
Specific implementation mode
Below in conjunction with specific embodiment, the present invention is described in detail, the embodiment be to the present invention furtherly
It is bright, rather than limit the scope of the invention.
The adhesive of degradation certainly is polypropylene carbonate resin described in following embodiment.The plasticizer is nano-sized carbon
Sour calcium.The modifying agent is one or both of triethanolamine borate, three isopropyl ester of aluminic acid.The accelerating agent is ethyl alcohol
One kind in amine, ethylenediamine.The density adjuster is one kind in sodium bromide, sodium chloride, potassium chloride, cesium formate.
Embodiment 1
The preparation method that diversion agent is temporarily blocked up from degradation hydraulic fracturing provided in the present embodiment is as follows：
Weigh in mass ratio 2.0% nano-calcium carbonate, 0.1% aluminic acid, three isopropyl ester, 0.1% ethanol amine, 10% sodium chloride,
87.8% polypropylene carbonate resin.Institute's above-mentioned raw materials are added in kneader, the agitating and heating 10min at 140 DEG C, mixing is equal
Pass through Screw Extrusion, segment after even.It is 4mm to obtain grain size, and length is the cylindrical pellet of 4mm.Cylindrical pellet is fallen while hot
Screening obtains graininess finished product after entering to throw circle 30min in particle circle-throw movement machine.
Embodiment 2
The preparation method that diversion agent is temporarily blocked up from degradation hydraulic fracturing provided in the present embodiment is as follows：
Weigh in mass ratio three isopropyl ester admixture of 5.0% nano-calcium carbonate, 1.4% triethanolamine borate and aluminic acid,
0.5% ethylenediamine, 5% potassium chloride, 88.1% polypropylene carbonate resin.Institute's above-mentioned raw materials are added in kneader, at 140 DEG C
Lower agitating and heating 10min, passes through Screw Extrusion, segment after mixing.It is 4mm to obtain grain size, and length is cylindric of 4mm
Grain.Cylindrical pellet is poured into in particle circle-throw movement machine screening after throwing circle 30min while hot and obtains graininess finished product.
Embodiment 3
The preparation method that diversion agent is temporarily blocked up from degradation hydraulic fracturing provided in the present embodiment is as follows：
8.0% nano-calcium carbonate, 0.5% triethanolamine borate, 1.5% ethylenediamine, 25% bromination are weighed in mass ratio
Sodium, 65% polypropylene carbonate resin.Institute's above-mentioned raw materials are added in kneader, the agitating and heating 10min at 140 DEG C, mixing
Pass through Screw Extrusion, segment after uniformly.It is 4mm to obtain grain size, and length is the cylindrical pellet of 4mm.While hot by cylindrical pellet
It pours into particle circle-throw movement machine screening after throwing circle 30min and obtains graininess finished product.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (2)
1. a kind of temporarily blocking up diversion agent from degradation hydraulic fracturing, it is characterised in that composed of the following components, each component and each component
Shared mass percent is：Plasticizer 1~10%；Modifying agent 0.05~2%；Accelerating agent 0.05~2%；Density adjuster 1
~30%；Remaining group is divided into from degradation adhesive, and the adhesive of degradation certainly is polypropylene carbonate resin；The plasticizer is
Nano-calcium carbonate；The modifying agent is one or both of triethanolamine borate, three isopropyl ester of aluminic acid；The accelerating agent is
One kind in ethanol amine, ethylenediamine；The density adjuster is one kind in sodium bromide, sodium chloride, potassium chloride, cesium formate.
2. the preparation method described in claim 1 for temporarily blocking up diversion agent from degradation hydraulic fracturing, it is characterised in that including following step
Suddenly：
(1), plasticizer, modifying agent, accelerating agent, density adjuster and adhesive of degrading certainly are weighed by above-mentioned mass ratio, by institute
It states raw material to be added in kneader after mixing by Screw Extrusion, segment, it is cylindric between 0.5~5mm to obtain grain size
Particle, processing temperature are controlled at 160 DEG C or less；
(2), cylindrical pellet is poured into throw in particle circle-throw movement machine and be justified, according to size requirements obtain the graininess of different-grain diameter at
Product.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510865845.1A CN105482799B (en) | 2015-11-30 | 2015-11-30 | It is a kind of temporarily to block up diversion agent and preparation method thereof from degradation hydraulic fracturing |
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| CN201510865845.1A CN105482799B (en) | 2015-11-30 | 2015-11-30 | It is a kind of temporarily to block up diversion agent and preparation method thereof from degradation hydraulic fracturing |
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| CN105482799B true CN105482799B (en) | 2018-09-14 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111978941B (en) * | 2020-08-28 | 2023-08-15 | 上海浦景化工技术股份有限公司 | Degradable material |
| CN112940699A (en) * | 2021-02-18 | 2021-06-11 | 维欧(天津)能源技术服务股份有限公司 | Preparation method of composite temporary plugging agent for temporary plugging diversion fracturing |
| CN117264620A (en) * | 2023-09-19 | 2023-12-22 | 西安石油大学 | Oilfield fracturing high-temperature-resistant degradable temporary plugging agent and preparation method thereof |
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|---|---|---|---|---|
| CN1267681A (en) * | 1999-03-19 | 2000-09-27 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN101553552A (en) * | 2006-10-24 | 2009-10-07 | 普拉德研究及开发股份有限公司 | Degradable material assisted diversion |
| CN102020984A (en) * | 2009-09-15 | 2011-04-20 | 中国石油天然气股份有限公司 | In-fissure diversion fracturing temporary blocking agent for low-permeability oilfield, and preparation method and application thereof |
| CN103342881A (en) * | 2013-07-26 | 2013-10-09 | 四川川庆井下科技有限公司 | Degradable temporary plugging ball and preparation method thereof |
| CN103930515A (en) * | 2011-11-30 | 2014-07-16 | 哈利伯顿能源服务公司 | Methods for initiating new fractures in completed wellbore having existing fractures present therein |
| CN104039917A (en) * | 2011-11-11 | 2014-09-10 | 普拉德研究及开发股份有限公司 | Hydrolyzable particle compositions, treatment fluids and methods |
| CN104418999A (en) * | 2013-08-20 | 2015-03-18 | 中国石油大学(北京) | Biodegradable copolyester nanometer composite material and temporary plugging agent prepared from biodegradable copolyester nanometer composite material |
| CN104987682A (en) * | 2015-07-13 | 2015-10-21 | 中国石油大学(北京) | Biodegradable resin material applied to oil and gas fields and preparation method for biodegradable resin material |
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2015
- 2015-11-30 CN CN201510865845.1A patent/CN105482799B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1267681A (en) * | 1999-03-19 | 2000-09-27 | 北京清大亚太科技研究中心 | Degradeable resin composition and its preparation and application |
| CN101553552A (en) * | 2006-10-24 | 2009-10-07 | 普拉德研究及开发股份有限公司 | Degradable material assisted diversion |
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| CN103930515A (en) * | 2011-11-30 | 2014-07-16 | 哈利伯顿能源服务公司 | Methods for initiating new fractures in completed wellbore having existing fractures present therein |
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Effective date of registration: 20200609 Address after: 710000 room 80202, building 3, North Shajing village, Yanta District, Xi'an City, Shaanxi Province Patentee after: SHAANXI XINGYOU TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 430100 University of Caidian District of Hubei city in Wuhan Province Road No. Patentee before: Yangtze University |