Offshore report: drilling high-pressure wells in Cameroon

Journal Article · Mon May 03 00:00:00 EDT 1982 · Oil Gas J.; (United States)

OSTI ID:6884193

Du Charlat, A; Suchon, C; Rioche, D

Total Exploration Production Cameroon, a subsidiary of the Compagnie Francaise Des Petroles (CFP)/total has been operating since 1979 on the H 17 north concession shared by the CFP total/Mobil Association. On this concession, 3 high pressure wildcats were drilled but had to be abandoned due to lost circulation and kicks. None of these wildcats was drilled to the programed total depth, and no testing was performed. The target formations (Isongo sands) are located below thick zones of under-compacted shale (500 M and over). Many wells have had to be abandoned upon reaching these zones in Cameroon as well as in Nigeria, and the few wells where the shales were drilled were time consuming and costly (especially barite), with many drilling problems. Problems encountered are discussed as a guide to understanding the structures in this type of well.

• OSTI ID: 6884193
• Journal Information: Oil Gas J.; (United States), Vol. 80:18
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
AFRICA
OIL SHALE DEPOSITS
OFFSHORE DRILLING
BLOWOUTS
COST
OFFSHORE OPERATIONS
ACCIDENTS
DRILLING
GEOLOGIC DEPOSITS
MINERAL RESOURCES
RESOURCES
040300* - Oil Shales & Tar Sands- Drilling
Fracturing & Mining