Technical innovations cut sidetracking time/costs
Conference
·
OSTI ID:457354
Advancements in whipstock orientation tools and casing mills have reduced the time required to complete a sidetrack in cased hole. A specialized valve allows a whipstock to be oriented quickly with a measurement-while-drilling (MWD) tool. Newly designed mills can cut a sidetrack window through casing in only two assembly trips, as compared with three or more trips required with previous technologies. Applying unique mill dressing materials and milling parameters significantly increases miffing efficiency, and provides better mill gauge protection. Time savings are quantified by comparing Amoco Norway`s results with the new whipstock orientation and milling technologies in the North Sea to a database of conventional North Sea sidetracking jobs. Results from 14 other North Sea applications of the new technology also are compared to the database of conventional sidetracking jobs.
- OSTI ID:
- 457354
- Report Number(s):
- CONF-961003--
- Country of Publication:
- United States
- Language:
- English
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