Invention Grant
- Patent Title: Biomimetic polymer for stabilizing wellbore and method for preparation of the same and drilling fluid
- Patent Title (中): 用于稳定井眼的生物模拟聚合物及其制备方法和钻井液
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Application No.: US14611086Application Date: 2015-01-30
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Publication No.: US09410067B2Publication Date: 2016-08-09
- Inventor: Guancheng Jiang , Yang Xuan , Xianzhu Wu , Junbin Chen , Wei Ouyang , Taotao Luo
- Applicant: China University of Petroleum (Beijing)
- Applicant Address: CN
- Assignee: China University of Petroleum (Beijing)
- Current Assignee: China University of Petroleum (Beijing)
- Current Assignee Address: CN
- Agency: Calfee, Halter & Griswold LLP
- Priority: CN201410062056 20140224
- Main IPC: C09K8/08
- IPC: C09K8/08 ; C09K8/035 ; C08B37/08 ; C08L5/08 ; C08L51/02 ; C08F251/00 ; C08F8/32
Abstract:
The present invention provides a biomimetic polymer for stabilizing wellbore, a method for preparation of the biomimetic polymer, and a drilling fluid. The polymer contains carboxymethyl chitosan that serves as a backbone and dopamine-derived groups grafted on the backbone. The polymer provided in the present invention can improve the strength of shale in the wellbore, seal the shale pores and reduce the filter loss of drilling fluid, and thereby attains an effect of stabilizing the wellbore in shale formation in drilling process.
Public/Granted literature
- US20150240143A1 BIOMIMETIC POLYMER FOR STABILIZING WELLBORE AND METHOD FOR PREPARATION OF THE SAME AND DRILLING FLUID Public/Granted day:2015-08-27
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