Working together for Successful Drilling through a Fault: Risk Management, Planning and Execution
- M. Yanez_Banda (Schlumberger) | A. Ruzhnikov (Schlumberger) | A. Kasimin (Schlumberger) | M. Husien (Schlumberger) | C. Malagon (Schlumberger) | K. Al-Wahedi (ADMA-OPCO)
- Document ID
- Society of Petroleum Engineers
- Abu Dhabi International Petroleum Exhibition & Conference, 13-16 November , Abu Dhabi, UAE
- Publication Date
- Document Type
- Conference Paper
- 2017. Society of Petroleum Engineers
- 2.2 Installation and Completion Operations, 7.2 Risk Management and Decision-Making, 0.2.2 Geomechanics, 1.1 Well Planning, 1.7 Pressure Management, 1.1 Well Planning, 2.2 Installation and Completion Operations, 7.2.1 Risk, Uncertainty and Risk Assessment, 1.11 Drilling Fluids and Materials, 1.6.1 Drill String Components and Drilling Tools (tubulars, jars, subs, stabilisers, reamers, etc), 3 Production and Well Operations, 1.7.5 Well Control, 7 Management and Information, 0.2 Wellbore Design, 1.2.3 Rock properties, 1.10 Drilling Equipment, 1.6 Drilling Operations
- Drilling through fault, team collaboration, Risk Management, Risk Assessment
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Since the start of drilling campaign at new field in the United Arab Emirates the operator faced the challenge to drill across faults, what can lead to well control, wellbore instability, total losses and stuck pipe. To minimize the impact, a risk management plan was developed and implemented during drilling and completion stages, which allowed to execute wells in trouble-free manner.
The operator gathered the respective teams (geomechanics, seismic, operation geologists, drilling engineering and operations) and service companies with the objective of understanding the nature and potential operational impact of the faults. Afterwards, a very detailed risk management plan (RMP) was developed, which included different options with mitigation measures on how to deal with losses. This included changes in the well design, drilling fluid, BHA and casing setting depth. The compromises and benefits of each scenario was worked until a primary option was determined. Also, detailed procedures in case of non-standard situations were developed with contingencies.
Based on the measures developed as part of the risk management plan the drilling of the sections through the fault and completion (casing run, cementing, etc.) were conducted in trouble-free manner. The prevention measures were implemented as per plan, what allowed to avoid mitigations measures and there was no non-productive time associated with fault.
|File Size||1 MB||Number of Pages||10|
Scientific Drilling, Reports on Deep Earth Sampling and Monitoring. Special Issue No. 1, 2007. Abstracts and Report from the OIDP/ICDP workshop on Fault zone drilling. Miyazaki, Japan, 2006. Compiled by: H. Ito, J. Behrmann, S. Hickman, H. Tobin, G. Kimura. Published by the Integrated Ocean drilling program with the International Continental Scientific drilling program.