Abstract
Drilling optimization objective was to reduce costs, improve wellbore conditions and integrity for increasingly challenging reservoirs while establishing maximum safety performance and environmental custodianship. Even though the final result of a drilling operation is easily observed, what almost always goes unnoticed is the complexity of the issues involved in the planning and execution of a drilling operation and the number of topics involved in such a process.In this paper, as case study of the exploration drilling in Hamada region, North Africa has been evaluated. Over the period of 2006 to 2011, continued drilling improvement was achieved. Key elements in the optimization included focus on management drilling team structure, engineering well planning, improvements on managing drilling operations such as on site safety management practices, and also post drill analysis to implement lesson learn for the next well to be drilled.As the result, while drilling 26 wells during the 2006 until 2011, drilling days were successfully reduced from 87 days (first well) to the average 40 days, and very good safety record performance.
Highlights
The basin in this paper is located about 200 km to the south west of Tripoli
The main objective of this paper is to describe how drilling team managed the integrated drilling optimization (IDO) workflow for all of aspects drilling activity starting from well planning, set up drilling team, tendering and procurement process, hiring company services, managing drilling operations, and post well review for lesson learnt
DRILLING TEAM SETUP Unlike larger companies, the drilling team was setup as a small group with positions taking on multi tasks
Summary
The basin in this paper is located about 200 km to the south west of Tripoli. All of area is desert environment at about 2,000 ft above sea level. The nearest community is located about 50 – 100 km This challenging environment had to be face for exploration drilling campaign. The main objective of this paper is to describe how drilling team managed the integrated drilling optimization (IDO) workflow for all of aspects drilling activity starting from well planning, set up drilling team, tendering and procurement process, hiring company services, managing drilling operations, and post well review for lesson learnt. WELL PLANING During well planning, there are several key activity that need to be accomplished which are: establish objective, gather data, identify offset well, risk register and mitigation plan and define drilling and completion program. XG1XN2 and water well had full losses during the drilling and cement job They pumped cement plugs to cure lost circulation a few times. 4. 8-1/2” section: Offsets indicate the following potential problems: sever gauge wear, loss circulation in Memouniat, and possible H2S in Memouniat Minor reaming and cleaning are expected on most trips. 4. 8-1/2” section: Offsets indicate the following potential problems: sever gauge wear, loss circulation in Memouniat, and possible H2S in Memouniat
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