Integrated Pre-Well Planning Process Improves Service Quality and Decreases Risk through Cooperation between Drilling and Geosciences

Abstract

Drilling complex wells with minimum risk and optimizing well placement with the least possible cost are key goals that oil companies strive to achieve. Service companies and operators apply several pre-well planning processes and methods to enhance drilling operations effectively and attain objectives. One of these processes involves a thorough understanding and application of the geological structure, not only within the reservoir section, but also in the over-burden where typically most of the time efficiency gains can be achieved. This can be best accomplished by fostering intense and effective communication between all stakeholders. In this paper, the authors present the latest integrated pre-well planning (IPWP) process that defines a methodology for conducting a formal planning, a process incorporating all aspects of drilling, well design, formation evaluation, bit selection and bottom hole assembly proposal. It also lists key considerations required in planning, coordination, and successful implementation of these services on the customer’s well with a means to assess potential technical risks that may influence the success of the job. The paper also describes a complex water injection well drilled in a Middle East onshore field where the integrated pre-well-planning process played a significant part in successfully achieving the aim of this challenging job.