Application of Dual Lateral Technology on an Existing Well in Sawan Gas Field of Pakistan
Research output: Research › Master's Thesis
Over the last few years, the continuous decline in Oil price has compelled Exploration and Production Companies to review their investment strategies once again. This decline has lead them to invest in existing fields rather than stepping into exploration of new areas, which require a large amount of investment. Deeper and more extreme environments are being produced to increase production capacities, and new technologies are being encouraged in the attempt to generate as much value from a well as possible. The use of developed technologies such as multilateral drilling over conventional drilling are one way to push the performance of existing wells. The concept of multilateral wells is not new. During early 1990’s, the conceptual techniques have progressed sufficiently for the technology to be considered fully developed. Completion techniques for multilateral wells including remedial work have been slow regarding implementation. However, all of these technical limitations have been overcome through innovative technology available on the market. Through multilateral technology, Exploration, and Production (E&P) companies now can avert the production decline from mature fields, and to maximize recoverable reserves from depreciated assets. Multilateral technology has never been applied on any of the fields in Pakistan. OMV Pakistan has now decided to implement multilateral drilling specifically for tight gas reservoirs, to meet its commitments. This project delivered a comprehensive insight of multilateral technology along with a conceptual design of a dual opposed lateral well while using preferred multilateral junction system, on Sawan-12 in OMV Sawan Gas Field of Pakistan. Starting from the motivations and advantages of multilateral technology for an E&P Company, this project explains briefly about the technical criteria and limitations for a multilateral project using a dual lateral approach. A Dual opposed lateral well is a type of multilateral well with both the laterals opposing each other. This project is focusing on the technical evaluation of an existing well on the OMV operated Sawan Gas Field in Pakistan. The case study demonstrates the basis of design for implementation of the dual lateral technology in order to complete the wells with ten stage propped fracture completions. Concerning the financial limitations for the Dual lateral well, the non-productive or vertical part of the well is considered to be cost-driven; whereas the productive part of the well, consisting of the horizontal sections, is considered to be value driven. Hence, the application of dual lateral technology on the existing wells of Sawan field of Pakistan will be a positive addition towards OMVs production gain in near future with reduced CAPEX.