Invention Grant
- Patent Title: Engineering methodology to treat severe loss zones with thixotropic cement system
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Application No.: US15556601Application Date: 2015-04-07
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Publication No.: US10344544B2Publication Date: 2019-07-09
- Inventor: Krishna M. Ravi , Rahul Chandrakant Patil , Sandip Prabhakar Patil , Siva Rama Krishna Jandhyala , Ravinder Gahlawat
- 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 Thomas Rooney
- International Application: PCT/US2015/024730 WO 20150407
- International Announcement: WO2016/163996 WO 20161013
- Main IPC: E21B21/00
- IPC: E21B21/00 ; C09K8/50 ; C09K8/42 ; C09K8/487

Abstract:
A method of treating lost circulation issues stemming from loss zones during the drilling and cementing process through the utilization of a thixotropic cement. The method comprises the steps of encountering a loss zone in a bore hole during drilling or running casing and pumping a treatment fluid into the loss zone, wherein the treatment fluid is a gel capable of gelling, breaking when sheared, and building back shear strength after shearing is removed.
Public/Granted literature
- US20180051528A1 ENGINEERING METHODOLOGY TO TREAT SEVERE LOSS ZONES WITH THIXOTROPIC CEMENT SYSTEM Public/Granted day:2018-02-22
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