Deployment of long tool strings is often critical for economical intervention in horizontal wells. This is because the extensive exposure to the reservoir produces a corresponding requirement for long perforation and straddle intervals.

A Norwegian operator has faced this challenge to increase recovery from horizontal offshore wells. Deployment of long tool strings into live wells can be a challenging task. When using the down-hole safety valve (DHSV) as the primary well barrier, the operator has only accepted snubbing as conveyance method. Deployment against DHSV on Coil Tubing (CT) and Wireline (WL) has not been accepted in live wells.

Keywords:
log analysis, Well Intervention, Upstream Oil & Gas, well logging, Directional Drilling, tool string, Completion Installation and Operations, production enhancement, deployment system, downhole intervention
Subjects:
Drilling Operations, Formation Evaluation & Management, Safety, Directional drilling, Open hole/cased hole log analysis, Operational safety, Completion Installation and Operations, Well Intervention
Copyright 2006, Society of Petroleum Engineers
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