Slim-hole casing program adapted to horizontal well

Journal Article · Mon Sep 06 04:00:00 EDT 1993 · Oil and Gas Journal; (United States)

OSTI ID:6369825

Foster, L ^[1]

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1. ARCO British Ltd., Guildford (United Kingdom)

A type of slim-hole well design reduced the cost of drilling a horizontal well in the southern North Sea. The basic slim-hole drilling and casing program was similar to that used in conventional directional wells in the field, but with slight modifications for drilling with logging-while-drilling (LWD) tools and running production liners. Nearly 2,600 ft were successfully drilled at over 80[degree] inclination in ARCO British Ltd.'s Pickerill A6 well, the first time in the southern North Sea that a horizontal well was drilled through the reservoir without first casting off the overlying evaporite sequence. The paper describes the well design, the pilot hole plan, the evaluation program for directional drilling, a horizontal sidetrack plan, its evaluation and drilling, hole conditions, liners, well completion, and results.

• OSTI ID: 6369825
• Journal Information: Oil and Gas Journal; (United States), Journal Name: Oil and Gas Journal; (United States) Vol. 91:36; ISSN OIGJAV; ISSN 0030-1388
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ATLANTIC OCEAN
COST
DESIGN
DIMENSIONS
DIRECTIONAL DRILLING
DRILLING
EVAPORITES
LINERS
MWD SYSTEMS
NORTH SEA
PLANNING
ROCKS
SEAS
SEDIMENTARY ROCKS
SURFACE WATERS
WELL CASINGS
WELL COMPLETION
WELL DRILLING
WELLS