Proper planning improves flow drilling
- Marathon Oil Co., Houston, TX (United States)
Underbalanced operations reduce formation damage, especially in horizontal wells where zones are exposed to mud for longer time periods. Benefits, risks, well control concerns, equipment and issues associated with these operations are addressed in this paper. Flow drilling raises many concerns, but little has been published on horizontal well control and flow drilling operations. This article covers planning considerations for flow drilling, but does not address horizontal ''overbalanced'' drilling because considerations and equipment are the same as in vertical overbalanced drilling and many references address that subject. The difference in well control between vertical and horizontal overbalanced drilling is fluid influx behavior and how that behavior affects kill operations.
- OSTI ID:
- 6934576
- Journal Information:
- World Oil; (United States), Vol. 215:10; ISSN 0043-8790
- Country of Publication:
- United States
- Language:
- English
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