Invention Grant
- Patent Title: Stable emulsion drilling fluids
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Application No.: US16630559Application Date: 2017-09-29
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Publication No.: US11492532B2Publication Date: 2022-11-08
- Inventor: William Walter Shumway , Jeffrey J. Miller
- Applicant: Halliburton Energy Services, Inc.
- Applicant Address: US TX Houston
- Assignee: Halliburton Energy Services, Inc.
- Current Assignee: Halliburton Energy Services, Inc.
- Current Assignee Address: US TX Houston
- Agency: C. Tumey Law Group PLLC
- Agent Tenley Krueger
- International Application: PCT/US2017/054369 WO 20170929
- International Announcement: WO2019/066913 WO 20190404
- Main IPC: C09K8/26
- IPC: C09K8/26 ; C09K8/28

Abstract:
A method of reducing a density of a density of a stable emulsion drilling fluid may comprise providing a stable emulsion drilling fluid comprising: an aqueous liquid; a biopolymer; an emulsifier; solid particulates; and an oil; wherein the stable emulsion drilling fluid is capable of remaining in quiescent storage at approximately 70° F. and atmospheric pressure without phase separation for about 8 hours or longer; circulating the stable emulsion drilling fluid though a drill string and annulus; adding additional oil to the stable emulsion drilling fluid to decrease the density of the stable emulsion drilling fluid and produce a reduced density stable emulsion drilling fluid; and circulating the reduced density stable emulsion drilling fluid though the drill string and the annulus.
Public/Granted literature
- US20210087456A1 Stable Emulsion Drilling Fluids Public/Granted day:2021-03-25
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