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Title: Offshore report: drilling high-pressure wells in Cameroon

Abstract

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.

Authors:
; ;
Publication Date:
OSTI Identifier:
6884193
Resource Type:
Journal Article
Journal Name:
Oil Gas J.; (United States)
Additional Journal Information:
Journal Volume: 80:18
Country of Publication:
United States
Language:
English
Subject:
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

Citation Formats

Du Charlat, A, Suchon, C, and Rioche, D. Offshore report: drilling high-pressure wells in Cameroon. United States: N. p., 1982. Web.
Du Charlat, A, Suchon, C, & Rioche, D. Offshore report: drilling high-pressure wells in Cameroon. United States.
Du Charlat, A, Suchon, C, and Rioche, D. 1982. "Offshore report: drilling high-pressure wells in Cameroon". United States.
@article{osti_6884193,
title = {Offshore report: drilling high-pressure wells in Cameroon},
author = {Du Charlat, A and Suchon, C and Rioche, D},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/6884193}, journal = {Oil Gas J.; (United States)},
number = ,
volume = 80:18,
place = {United States},
year = {Mon May 03 00:00:00 EDT 1982},
month = {Mon May 03 00:00:00 EDT 1982}
}