CN103834373A - Inorganic modified copolymer plugging agent - Google Patents

Inorganic modified copolymer plugging agent Download PDF

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Publication number
CN103834373A
CN103834373A CN201210489446.6A CN201210489446A CN103834373A CN 103834373 A CN103834373 A CN 103834373A CN 201210489446 A CN201210489446 A CN 201210489446A CN 103834373 A CN103834373 A CN 103834373A
Authority
CN
China
Prior art keywords
plugging agent
inorganic modified
silicate
modified copolymer
citric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201210489446.6A
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Chinese (zh)
Inventor
王荣
袁飞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN201210489446.6A priority Critical patent/CN103834373A/en
Publication of CN103834373A publication Critical patent/CN103834373A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
    • 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
    • C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
    • C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement

Abstract

The invention relates to an inorganic modified copolymer plugging agent, comprising the following raw materials by weight percent: 1-10% of acrylamide, 0.1-2% of N,N-dimethyl acrylamide monomer, 1-4% of citric acid, 2-3% of sakamoto, 1-3% of silicate, 10-30% of calcium carbonate, 0.01-1% of ammonium persulfate and the balance of water. The inorganic modified copolymer plugging agent is prepared by the following steps: firstly, fully dissolving the acrylamide and the N,N-dimethyl acrylamide monomer; and orderly adding the citric acid, the sakamoto, the silicate and the calcium carbonate and evenly agitating. The plugging agent is good in injection property, has extremely strong tenacity by an organic main body part after gelatinization while an inorganic part can obviously improve the strength and the temperature tolerance of the plugging agent. The gelatinized thickness can be up to 70bc and comparative to cement by an experiment detection, gel breaking and hydrolysis are not carried out at constant temperature of 120 DEG C for over three months, and the inorganic modified copolymer plugging agent is small in damage to an oil reservoir due to acidification and plug removal, and is applicable to block construction aiming at the gas channeling phenomenon of an oil well in the high-temperature mining process.

Description

A kind of inorganic modified co-polymer plugging agent
Technical field
The present invention relates to plugging agent and compound method thereof for oil production, is a kind of inorganic modified multipolymer plugging agent.
Background technology
Mainly point mineral-type and organic two macrospecies of plugging agent that use on oil field at present, the main drawback of mineral-type plugging agent is: injury to oil reservoir is large, construction risk is high, be difficult for de-plugging.The main drawback of organic blocking agent is: temperature tolerance is not high, is mainly used in the stifled operation of tune of 90 ℃ of following oil reservoirs, and the low strength after plastic is subject to the salinity of reservoir temperature, dosing water quality to affect the broken glue of larger facile hydrolysis.
Summary of the invention
The object of this invention is to provide a kind of inorganic modified multipolymer plugging agent, have advantages of that heat resistance is high, plugging strength large, little to oil reservoir injury, construction risk is low, easy de-plugging.
One of technical scheme of the present invention is achieved like this: a kind of inorganic modified multipolymer plugging agent, it consists of by weight percentage: the silicate of the citric acid of the acrylamide of 1-10%, the N,N-DMAA monomer of 0.1-2%, 1-4%, the slope soil of 2-3%, 1-8%, calcium carbonate, the ammonium persulphate of 0.01-1% and the water of surplus of 10-30%.
Two of technical scheme of the present invention is achieved like this: a kind of compound method of inorganic modified co-polymer plugging agent, is characterized in that carrying out in the steps below:
Inorganic modified multipolymer plugging agent preparation: first by the acrylamide of requirement, N, N-DMAA monomer joins in total Water successively, fully stirring and dissolving, next under agitation adds respectively ammonium persulphate, citric acid, slope soil, silicate, the calcium carbonate of requirement.
Feature of the present invention: the inorganic modified multipolymer plugging agent compound method that obtains is simple and efficiency is high, has advantages of that heat resistance is high, plugging strength large, little to oil reservoir injury, construction risk is low, easy de-plugging.This inorganic modified multipolymer plugging agent is applicable to the stifled construction of tune of high temperature exploitation oil reservoir.
Specific embodiments
Embodiment 1
This inorganic modified multipolymer plugging agent consists of by weight percentage: 1% acrylamide, 0.1% N,N-DMAA monomer, 1% citric acid, 2% slope soil, 1% silicate, 10% calcium carbonate, 0.01% ammonium persulphate and the water of surplus.
Embodiment 2
This inorganic modified multipolymer plugging agent consists of by weight percentage: 2% acrylamide, 0.4% N,N-DMAA monomer, 3% citric acid, 4% slope soil, 2% silicate, 15% calcium carbonate, 0.1% ammonium persulphate and the water of surplus.
Embodiment 3
This inorganic modified multipolymer plugging agent consists of by weight percentage: 1% acrylamide, 0.5% N,N-DMAA monomer, 2% citric acid, 1% slope soil, 3% silicate, 20% calcium carbonate, 0.5% ammonium persulphate and the water of surplus.
Embodiment 4
This inorganic modified multipolymer plugging agent consists of by weight percentage: 10% acrylamide, 2% N,N-DMAA monomer, 4% citric acid, 3% slope soil, 8% silicate, 30% calcium carbonate, 1% ammonium persulphate and the water of surplus.
Embodiment 5
This inorganic modified multipolymer plugging agent consists of by weight percentage: 9% acrylamide, 1.5% N,N-DMAA monomer, 3.5% citric acid, 2.5% slope soil, 7% silicate, 12% calcium carbonate, 0.8% ammonium persulphate and the water of surplus.
The inorganic modified multipolymer plugging agent of above-described embodiment obtains by following compound method:
Inorganic modified multipolymer plugging agent preparation: first by the acrylamide monomer of requirement, N, N-DMAA monomer joins in total Water successively, fully stirring and dissolving, next under agitation adds respectively ammonium persulphate, citric acid, slope soil, silicate, the calcium carbonate of requirement.
Can adopt acidifying measure to carry out de-plugging operation to the inorganic modified multipolymer plugging agent of above-mentioned gained.

Claims (2)

1. an inorganic modified co-polymer plugging agent, it is characterized in that: consist of by weight percentage: the silicate of the citric acid of the acrylamide of 1-10%, the N,N-DMAA monomer of 0.1-2%, 1-4%, the slope soil of 2-3%, 1-8%, calcium carbonate, the ammonium persulphate of 0.01-1% and the water of surplus of 10-30%.
2. a compound method for inorganic modified co-polymer plugging agent according to claim 1, is characterized in that: carry out in the steps below:
First the acrylamide monomer of requirement, N,N-DMAA monomer are joined in total Water successively, fully stirring and dissolving, next under agitation adds respectively ammonium persulphate, citric acid, slope soil, silicate and the calcium carbonate of requirement.
CN201210489446.6A 2012-11-27 2012-11-27 Inorganic modified copolymer plugging agent Pending CN103834373A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210489446.6A CN103834373A (en) 2012-11-27 2012-11-27 Inorganic modified copolymer plugging agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210489446.6A CN103834373A (en) 2012-11-27 2012-11-27 Inorganic modified copolymer plugging agent

Publications (1)

Publication Number Publication Date
CN103834373A true CN103834373A (en) 2014-06-04

Family

ID=50798275

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210489446.6A Pending CN103834373A (en) 2012-11-27 2012-11-27 Inorganic modified copolymer plugging agent

Country Status (1)

Country Link
CN (1) CN103834373A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106753293A (en) * 2016-11-29 2017-05-31 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of colloidal cements blocking agent and preparation method and applications
CN109868126A (en) * 2017-12-01 2019-06-11 中国石油天然气股份有限公司 A kind of water shutoff agent and its preparation method and application
CN113528105A (en) * 2020-04-17 2021-10-22 中石化石油工程技术服务有限公司 Geopolymer-based dual plugging agent and preparation and application methods thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089116A (en) * 2007-07-11 2007-12-19 中国石油大学(华东) Adaptive leak preventing and stopping agent for drilling fluid
CN101215463A (en) * 2008-01-17 2008-07-09 中国矿业大学 Drilling hole sealing material
CN101724383A (en) * 2008-10-15 2010-06-09 中国石油天然气股份有限公司 Drilling fluid plugging agent while drilling

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101089116A (en) * 2007-07-11 2007-12-19 中国石油大学(华东) Adaptive leak preventing and stopping agent for drilling fluid
CN101215463A (en) * 2008-01-17 2008-07-09 中国矿业大学 Drilling hole sealing material
CN101724383A (en) * 2008-10-15 2010-06-09 中国石油天然气股份有限公司 Drilling fluid plugging agent while drilling

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106753293A (en) * 2016-11-29 2017-05-31 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of colloidal cements blocking agent and preparation method and applications
CN109868126A (en) * 2017-12-01 2019-06-11 中国石油天然气股份有限公司 A kind of water shutoff agent and its preparation method and application
CN113528105A (en) * 2020-04-17 2021-10-22 中石化石油工程技术服务有限公司 Geopolymer-based dual plugging agent and preparation and application methods thereof
CN113528105B (en) * 2020-04-17 2022-09-09 中石化石油工程技术服务有限公司 Geopolymer-based dual plugging agent and preparation and application methods thereof

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Application publication date: 20140604