Invention Grant
- Patent Title: Water-based drilling fluid for protecting high-permeability reservoirs, and preparation method and use thereof
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Application No.: US15809707Application Date: 2017-11-10
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Publication No.: US10040984B1Publication Date: 2018-08-07
- Inventor: Kaihe Lv , Jinsheng Sun , Jingping Liu
- Applicant: China University of Petroleum (East China)
- Applicant Address: CN
- Assignee: China University of Petroleum (East China)
- Current Assignee: China University of Petroleum (East China)
- Current Assignee Address: CN
- Agency: Calfee, Halter & Grisowld LLP
- Priority: CN201710053248 20170122
- Main IPC: E21B33/13
- IPC: E21B33/13 ; C09K8/035 ; C09K8/04 ; C09K8/24 ; C09K8/20 ; E21B21/00
Abstract:
Disclosed herein are water-based drilling fluids for protecting high-permeability reservoirs. The drilling fluid comprises bentonite, a tackifier, a thinner, a filtrate reducer, an anti-collapse agent, a reservoir protectant, a lubricant, and water.
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