- Patent Title: Underbalanced drilling through formations with varying lithologies
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Application No.: US15035449Application Date: 2015-07-13
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Publication No.: US09784088B2Publication Date: 2017-10-10
- Inventor: Robello Samuel , Gabriela M Morales-Ocando , Aniket Aniket
- Applicant: Landmark Graphics Corporation
- Agent Howard L. Speight, PLLC
- International Application: PCT/US2015/040191 WO 20150713
- International Announcement: WO2017/010985 WO 20170119
- Main IPC: E21B21/08
- IPC: E21B21/08 ; E21B44/00 ; E21B41/00
Abstract:
Bottom-hole pressure operating envelops for underbalanced drilling take into account the lithologies of the formations being drilled through.
Public/Granted literature
- US20170167240A1 Underbalanced Drilling Through Formations With Varying Lithologies Public/Granted day:2017-06-15
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