Title:
IMBIBITION OIL DISPLACEMENT AGENT AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/252620
Kind Code:
A1
Abstract:
The present application discloses an imbibition oil displacement agent and a preparation method therefor. The imbibition oil displacement agent comprises the following components: 20-60 parts by weight of a nano-active agent material, and 10-40 parts by weight of a nonionic surfactant. The nano-active agent material is obtained by polymerizing raw materials that contain a double bond modified lamellar nano-material, a hydrophilic monomer and a hydrophobic monomer; the hydrophilic monomer is selected from at least one among acid anhydride compounds; and the hydrophobic monomer is selected from at least one among long-chain alkyl allyl quaternary ammonium salts. The imbibition oil displacement agent is prepared by adding a nano-active agent material in combination with a nonionic surfactant to obtain a synergistic effect of the two so as to obtain a high-efficiency imbibition oil displacement agent (system) that is easy to prepare and is suitable for low-permeability oil reservoirs; in addition, the present invention has great significance and economic value for improving the development efficiency of low permeability reservoirs.
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Inventors:
ZHAO CONG (CN)
WU WENWEI (CN)
LIU YUHONG (CN)
SUN JINGBO (CN)
WANG YAOGUO (CN)
WU WENWEI (CN)
LIU YUHONG (CN)
SUN JINGBO (CN)
WANG YAOGUO (CN)
Application Number:
PCT/CN2022/070745
Publication Date:
December 08, 2022
Filing Date:
January 07, 2022
Export Citation:
Assignee:
NINGBO FENGCHENG ADVANCED ENERGY MATERIALS RES INSTITUTE CO LTD (CN)
International Classes:
C09K8/584; C08F222/06; C08F226/02; C08F292/00; C09K8/588; C09K8/60
Foreign References:
| CN113372896A | 2021-09-10 | |||
| CN104531118A | 2015-04-22 | |||
| CN112708405A | 2021-04-27 | |||
| CN111826149A | 2020-10-27 | |||
| CN111944507A | 2020-11-17 | |||
| CN111793178A | 2020-10-20 | |||
| CN111423866A | 2020-07-17 | |||
| EP2581432A1 | 2013-04-17 |
Attorney, Agent or Firm:
PERIODIC LAW FIRM (CN)
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