CN106047322A - Locating high-strength blocking crack deflection fracturing resin coated sand and application process technology - Google Patents

Locating high-strength blocking crack deflection fracturing resin coated sand and application process technology Download PDF

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Publication number
CN106047322A
CN106047322A CN201610385367.9A CN201610385367A CN106047322A CN 106047322 A CN106047322 A CN 106047322A CN 201610385367 A CN201610385367 A CN 201610385367A CN 106047322 A CN106047322 A CN 106047322A
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Prior art keywords
coated sand
resin coated
resin
crack
sand
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CN201610385367.9A
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张会红
宣高亮
张会芳
马怡琳
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Jinsha Combustion Technique Ltd.
Oil Management Bureau of Jilin province agriculture Corporation
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JINSHA COMBUSTION TECHNIQUE Ltd
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Priority to CN201610385367.9A priority Critical patent/CN106047322A/en
Publication of CN106047322A publication Critical patent/CN106047322A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/50Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
    • C09K8/504Compositions based on water or polar solvents
    • C09K8/506Compositions based on water or polar solvents containing organic compounds
    • C09K8/508Compositions based on water or polar solvents containing organic compounds macromolecular compounds
    • C09K8/5086Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21BEARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00Sealing or packing boreholes or wells
    • E21B33/10Sealing or packing boreholes or wells in the borehole
    • E21B33/13Methods or devices for cementing, for plugging holes, crevices or the like
    • E21B33/138Plastering the borehole wall; Injecting into the formation
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/18Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts

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  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Road Repair (AREA)

Abstract

The invention relates to a resin coated sand locating high-strength blocking crack deflection fracturing technology. Resin coated sand is prepared, the surface of a main raw material support is coated with a coupling agent, resin and a curing agent through heating equipment, and the finished resin coated sand product is obtained through further processing. The resin coated sand is used in the locating high-strength blocking crack deflection fracturing construction of an oil and gas well, during fracturing construction, sand-carrying fluid or water is used for carrying the resin coated sand into a target layer, and an artificial crack, or a natural crack or a low-pressure dominant passage in a high-water-content state can be deeply blocked. After the resin coated sand is cured, second fracturing is carried out, fluid is made to deflect through changes of fracturing pressure and crack extending pressure, and new cracks are formed in other directions and portions of a stratum. The fracturing construction effective rate can be greatly increased through the resin coated sand locating high-strength blocking crack deflection fracturing technology, new oil drainage area can be increased or added, a remaining oil enrichment region is communicated or produced, a reservoir stratum which is low in producing degree or not produced at all can be produced, and the oil and gas yield of the oil and gas well is substantially increased.

Description

Position high-strength closure crack turnaround fracture resin coated sand and technique for applying technology thereof
Technical field
The invention belongs to oil formation improvement Technology field, oil field, specifically high-strength closure crack, a kind of location turns to Pressure break resin coated sand and technique for applying technology thereof.
Background technology
LOW PERMEABILITY RESERVOIR Oil/gas Well usually uses pressure break to improve the major measure of Oil/gas Well yield as reservoir improvement, in measure After effect duration, it is necessary to transform through refracturing to maintain production.Along with Oil/gas Well development time and the increase of measure number of times, former The production potential having man-made fracture is more and more less.Owing to the anisotropism in reservoir plane and longitudinal direction, zones of different layer position are employed Degree there are differences, and adds large-scale refracturing and can not meet the development need of oilfield stimulation stable yields.
Continuing the original single old seam of pressure break makes it repeat to open, and after this refracturing, stable production period is short, increases production inconspicuous; The too great Yi water breakthrough of fracturing fracture length scale, influenced by factors;And under the strata pressure of primary fracture near zone Fall, aqueous rising, recovery percent of reserves height;Stratum and crack wall permeability decrease.
Summary of the invention
It is introduced into former fracturing stratum for existing fractured well fracturing sand present in the fracturing process and can not completely arrive at Target zone causes the problem that fracturing effect again is poor, the present invention one to be to provide a kind of tree positioning high-strength closure crack turnaround fracture Fat coated sand, two are to provide the technique for applying technology of this resin coated sand a kind of, and this technology is greatly improved pressing crack construction to be had Efficiency, increases substantially the oil-producing of Oil/gas Well, gas production.
Solve above-mentioned technical problem by the following technical solutions:
A kind of resin coated sand positions the resin coated sand of high-strength closure crack turnaround fracture, and described resin coated sand is by the most former Material and auxiliary material mix, and by weight, described primary raw material is 80-90 part, as the coupling agent of auxiliary material 0.1-0.6 part, resin 1-12 part, firming agent 1-3 part, be coated in master by firing equipment respectively by coupling agent, resin, firming agent Wanting raw material rack surface, obtain resin coated sand semi-finished product, then sieve broken for resin coated sand semi-finished product, siftage is tree Fat coated sand finished product.
As preferably, described primary raw material is the mixture of one or more of quartz sand, shell powder, silicon dioxide.
As preferably, described quartz sand, shell powder, silicon dioxide particle diameter respectively between 20-200 mesh.
As preferably, described coupling agent is silanes adhesion promoter.
As preferably, described resin is the one of furane resins, phenolic resin, Lauxite, epoxy resin.
As preferably, described firming agent is organic amine firming agent.
As preferably, described firing equipment is cylinder heating furnace.
The application of a kind of resin coated sand, described resin coated sand is used for positioning the turnaround fracture construction of high-strength closure crack With in Oil/gas Well water-blocking operation.
As preferably, resin coated sand is used for Oil/gas Well and positions in the turnaround fracture construction of high-strength closure crack, specifically execute Work technique is as follows:
1) first brought in target zone with load fluid or water during pressing crack construction, set in formation temperature (more than 25 DEG C) 2 ~ 24 hours Fat coated sand can consolidate the solid sand body forming high intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state or natural splits Seam or low pressure predominant pathway;
2) after resin coated sand consolidates, carry out second time pressure break, make fluid by the change of fracture pressure, fracture propagation pressure Turn to, form new crack at other direction and the position on stratum.
Using technique scheme, compared with prior art, the resin coated sand that the present invention provides uses advanced heat painting Technology, produces under product room temperature in fluffy, can form the sand bolt with high compressive strength at the formation temperature, is applicable not only to old Well fracturing methods again, is applicable to again the pressure break water blockoff measure of all kinds of oil well;First with load fluid or water, resin sand is brought in during construction Target zone, carries out primary fracture or water layer positioning high-strength closure, then forms new seam at target zone during pressure break, new by setting up Oil gas flow channel, improves the flow conductivity of man-made fracture, changes oil-gas Layer fluid neuron network displacement rule;Expand simultaneously, increase New drainage area, link up, employ remaining oil enriched area and development degree low even do not employ reservoir so that improve Oil/gas Well produce Amount.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with embodiment, to the present invention It is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to Limit the present invention.
The resin coated sand that the present embodiment provides positions high-strength closure crack turnaround fracture technology and includes resin coated sand Prepare and position high-strength closure crack turnaround fracture and the construction technology technology of Oil/gas Well water-blocking operation with resin coated sand.
Resin coated sand is made up of primary raw material and auxiliary material, and primary raw material uses quartz sand, shell powder, silicon dioxide The mixture of one or more;Auxiliary material is coupling agent, resin and firming agent.By weight, described primary raw material is 80-90 part, coupling agent 0.1-0.6 part, resin 1-12 part, firming agent 1-3 part.By coupling agent, resin, firming agent respectively by rolling Cylinder heating furnace is coated in primary raw material rack surface, obtains resin coated sand semi-finished product, is then broken by resin coated sand semi-finished product Broken sieving, siftage is resin coated sand finished product.
The described high-strength closure crack turnaround fracture technology that positions is to be used for positioning high-strength envelope by described resin coated sand In the turnaround fracture that chinks construction and Oil/gas Well water-blocking operation.
This resin coated sand positions in the turnaround fracture construction of high-strength closure crack for Oil/gas Well, and Specific construction technique is such as Under:
1) first brought in target zone with load fluid or water during pressing crack construction, set in formation temperature (more than 25 DEG C) 2 ~ 24 hours Fat coated sand can consolidate the solid sand body forming high intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state or natural splits Seam or low pressure predominant pathway.
2) after resin coated sand consolidates, carry out second time pressure break, made by the change of fracture pressure, fracture propagation pressure Fluid turns to, and forms new crack at other direction and the position on stratum.
Specific embodiment is as follows:
The compound 80 parts of 200 mesh quartz sands and 200 mesh silicon dioxide is entered mixing tank by heating cylinder so that it is uniformly rise Temperature;0.6 part of silanes adhesion promoter, 12 parts of furane resins, 3 parts of organic amine firming agent are added in said mixture, It is coated uniformly on primary raw material rack surface with cylinder heating furnace, obtains semi-finished product, then broken for semi-finished product sieving is obtained one Determine high-strength closure crack, the location turnaround fracture resin coated sand finished product of particle diameter.Resin coated sand is used for positioning high-strength closure crack Turnaround fracture is constructed, and is first brought in target zone with load fluid or water, at formation temperature (more than 25 DEG C) 2 ~ 24 during pressing crack construction In hour, resin coated sand can consolidate the solid sand body forming high intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state Or intrinsic fracture or low pressure predominant pathway.After resin coated sand consolidates, carry out second time pressure break, by fracture pressure, crack The change of extending pressure makes fluid turn to, and forms new crack at other direction and the position on stratum.
Embodiment 2 is by weight
70 parts of 20 mesh shell powder is entered mixing tank by heating cylinder so that it is uniformly heat up;It is sequentially added into 0.1 part of silanes attached Adhesion promoter, 4 parts of phenolic resin, 1 part of organic amine firming agent, mix homogeneously, then it is coated in mainly with cylinder heating furnace Raw material rack surface, obtains semi-finished product, and then being crushed by semi-finished product sieves obtains the high-strength closure crack, location of certain particle diameter and turn To pressure break resin coated sand finished product.Resin coated sand is used for positioning the turnaround fracture construction of high-strength closure crack, during pressing crack construction first Being brought in target zone with load fluid or water, in formation temperature (more than 25 DEG C) 2 ~ 24 hours, resin coated sand consolidation forms height The solid sand body of intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state or intrinsic fracture or low pressure predominant pathway.Treat After resin coated sand consolidation, carry out second time pressure break, make fluid occur to turn by the change of fracture pressure, fracture propagation pressure To, form new crack at other direction and the position on stratum.
Embodiment 3 is by weight
100 mesh quartz sand 75 parts is entered mixing tank by heating cylinder so that it is uniformly heat up;It is sequentially added into 0.4 part of silanes Adhesion promoter, 7 parts of Lauxites, 2 parts of organic amine firming agent, be then coated uniformly on quartz sand with cylinder heating furnace and prop up Frame surface, obtains semi-finished product, and then being crushed by semi-finished product sieves obtains high-strength closure crack, the location turnaround fracture of certain particle diameter Resin coated sand finished product.Resin coated sand is used for positioning the turnaround fracture construction of high-strength closure crack, first with taking sand during pressing crack construction Liquid or water are brought in target zone, and in formation temperature (more than 25 DEG C) 2 ~ 24 hours, resin coated sand can consolidate formation high intensity Solid sand body, it is possible to indepth plugging is in the man-made fracture of High water cut state or intrinsic fracture or low pressure predominant pathway.Treat resin After coated sand consolidation, carry out second time pressure break, make fluid turn to by the change of fracture pressure, fracture propagation pressure, Other direction on stratum and position form new crack.
Embodiment 4 is by weight
150 mesh silicon dioxide 78 parts is entered mixing tank by heating cylinder so that it is uniformly heat up;It is sequentially added into 0.5 part of silane Class adhesion promoter, 5 parts of epoxy resin, 3 parts of organic amine firming agent, be then coated uniformly on the most former with cylinder heating furnace Material rack surface, obtains semi-finished product, and then being crushed by semi-finished product sieves obtains the high-strength closure crack, location of certain particle diameter and turn to Pressure break resin coated sand finished product.Resin coated sand is used for positioning the turnaround fracture construction of high-strength closure crack, first uses during pressing crack construction Load fluid or water are brought in target zone, and in formation temperature (more than 25 DEG C) 2 ~ 24 hours, resin coated sand can consolidate formation height The solid sand body of intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state or intrinsic fracture or low pressure predominant pathway.Treat After resin coated sand consolidation, carry out second time pressure break, make fluid occur to turn by the change of fracture pressure, fracture propagation pressure To, form new crack at other direction and the position on stratum.
The present invention can be additionally used in in Oil/gas Well water-blocking operation
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and Any amendment, equivalent and the improvement etc. made within principle, should be included within the scope of the present invention.

Claims (9)

1. the resin coated sand positioning high-strength closure crack turnaround fracture, it is characterised in that described resin coated sand is by leading Wanting raw material and auxiliary material to mix, by weight, described primary raw material is 80-90 part, as the coupling of auxiliary material Agent 0.1-0.6 part, resin 1-12 part, firming agent 1-3 part, be coated in by firing equipment respectively by coupling agent, resin, firming agent Primary raw material rack surface, obtains resin coated sand semi-finished product, then sieves broken for resin coated sand semi-finished product, and siftage is Resin coated sand finished product.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that described Primary raw material is the mixture of one or more of quartz sand, shell powder, silicon dioxide.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that described Quartz sand, shell powder, silicon dioxide particle diameter respectively between 20-200 mesh.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that described Coupling agent be silanes adhesion promoter.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that institute The resin stated is the one of furane resins, phenolic resin, Lauxite, epoxy resin.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that institute The firming agent stated is organic amine firming agent.
The resin coated sand of high-strength closure crack, location the most according to claim 1 turnaround fracture, it is characterised in that described Firing equipment be cylinder heating furnace.
8. the application of a resin coated sand as claimed in claim 1, it is characterised in that described resin coated sand is used for positioning In the turnaround fracture construction of high-strength closure crack and Oil/gas Well water-blocking operation.
High-strength closure crack, location the most according to claim 8 turnaround fracture Technology, it is characterised in that resin is coated with Covering sand to position in the turnaround fracture construction of high-strength closure crack for Oil/gas Well, Specific construction technique is as follows:
1) first brought in target zone with load fluid or water during pressing crack construction, set in formation temperature (more than 25 DEG C) 2 ~ 24 hours Fat coated sand can consolidate the solid sand body forming high intensity, it is possible to indepth plugging is in the man-made fracture of High water cut state or natural splits Seam or low pressure predominant pathway;
2) after resin coated sand consolidates, carry out second time pressure break, make fluid by the change of fracture pressure, fracture propagation pressure Turn to, form new crack at other direction and the position on stratum.
CN201610385367.9A 2016-06-03 2016-06-03 Locating high-strength blocking crack deflection fracturing resin coated sand and application process technology Pending CN106047322A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240210A (en) * 2016-12-27 2018-07-03 中国石油天然气股份有限公司 A kind of refracturing method
CN108997987A (en) * 2018-07-16 2018-12-14 唐山市金沙工贸有限公司 A kind of oil-gas field development Operating Pressure tubing string sealing agent and preparation method thereof
CN108997989A (en) * 2018-07-16 2018-12-14 唐山市金沙工贸有限公司 A kind of resin coated sand, preparation method and its application for realizing turnaround fracture
CN109439299A (en) * 2018-10-15 2019-03-08 中国石油天然气股份有限公司 Sealing agent and its preparation method and application
CN109468126A (en) * 2018-12-18 2019-03-15 通辽市宝林矽砂有限责任公司 A kind of oil-water well refracturing closure diversion agent and preparation method thereof
CN111995995A (en) * 2020-09-03 2020-11-27 西南石油大学 Bulk-expanded particle heterogeneous crack plugging effect improving agent and preparation method thereof
CN113969148A (en) * 2020-07-23 2022-01-25 中石化石油工程技术服务有限公司 Low-density high-temperature plugging agent, preparation method and application thereof
CN115029114A (en) * 2021-03-04 2022-09-09 中国石油天然气集团有限公司 Water plugging fracturing crack diverting agent suitable for high-water-content oil reservoir and preparation method thereof

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* Cited by examiner, † Cited by third party
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CN102838975A (en) * 2011-06-23 2012-12-26 中国石油天然气集团公司 Sand-proof consolidation agent
CN103087687A (en) * 2011-10-28 2013-05-08 中国石油化工股份有限公司 Anti-backflow leak-stopping agent, preparation method and applications thereof
CN105505372A (en) * 2015-12-25 2016-04-20 天津大港油田石油工程研究院钻采技术开发公司 Sand prevention and water reduction proppant particles and preparing method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102838975A (en) * 2011-06-23 2012-12-26 中国石油天然气集团公司 Sand-proof consolidation agent
CN103087687A (en) * 2011-10-28 2013-05-08 中国石油化工股份有限公司 Anti-backflow leak-stopping agent, preparation method and applications thereof
CN105505372A (en) * 2015-12-25 2016-04-20 天津大港油田石油工程研究院钻采技术开发公司 Sand prevention and water reduction proppant particles and preparing method thereof

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108240210A (en) * 2016-12-27 2018-07-03 中国石油天然气股份有限公司 A kind of refracturing method
CN108997987A (en) * 2018-07-16 2018-12-14 唐山市金沙工贸有限公司 A kind of oil-gas field development Operating Pressure tubing string sealing agent and preparation method thereof
CN108997989A (en) * 2018-07-16 2018-12-14 唐山市金沙工贸有限公司 A kind of resin coated sand, preparation method and its application for realizing turnaround fracture
CN108997989B (en) * 2018-07-16 2021-04-06 唐山市金沙工贸有限公司 Resin coated sand for realizing steering fracturing, and preparation method and application thereof
CN109439299B (en) * 2018-10-15 2021-03-30 中国石油天然气股份有限公司 Plugging agent and preparation method and application thereof
CN109439299A (en) * 2018-10-15 2019-03-08 中国石油天然气股份有限公司 Sealing agent and its preparation method and application
CN109468126A (en) * 2018-12-18 2019-03-15 通辽市宝林矽砂有限责任公司 A kind of oil-water well refracturing closure diversion agent and preparation method thereof
CN113969148A (en) * 2020-07-23 2022-01-25 中石化石油工程技术服务有限公司 Low-density high-temperature plugging agent, preparation method and application thereof
CN113969148B (en) * 2020-07-23 2023-03-31 中石化石油工程技术服务有限公司 Low-density high-temperature plugging agent, preparation method and application thereof
CN111995995A (en) * 2020-09-03 2020-11-27 西南石油大学 Bulk-expanded particle heterogeneous crack plugging effect improving agent and preparation method thereof
CN111995995B (en) * 2020-09-03 2021-04-30 西南石油大学 Bulk-expanded particle heterogeneous crack plugging effect improving agent and preparation method thereof
CN115029114A (en) * 2021-03-04 2022-09-09 中国石油天然气集团有限公司 Water plugging fracturing crack diverting agent suitable for high-water-content oil reservoir and preparation method thereof
CN115029114B (en) * 2021-03-04 2023-08-18 中国石油天然气集团有限公司 Water plugging fracturing fracture steering agent suitable for high-water-content oil reservoir and preparation method thereof

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Inventor after: Zhang Huihong

Inventor after: Ma Yilin

Inventor after: Zhang Huifang

Inventor after: Xu Li

Inventor after: Zhao Jingming

Inventor after: Miao Xiaoyong

Inventor after: Xuan Gaoliang

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Address before: 064400 Qian''an City, Hebei province by the east of the road on the east side of the city (City Industrial Park), five,

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Application publication date: 20161026