Development effect, key technology and important enlightenment in Sunan international cooperation zone in Sulige Gasfield

doi:10.3969/j.issn.1672-7703.2023.02.005

Abstract

Abstract: The benefit development of Sulige Gasfield faced great challenges after its discovery. In order to learn from international advanced technologies and management thoughts, an international cooperative development mode has been established between Total and PetroChina (operator) to achieve development breakthroughs. More than 10 years’ international cooperative practice shows that, the production performance of a single well in international cooperation zone is significantly better than that in self-operated development zone given the same reservoir geological conditions. Therefore, it is of great significance to systematically summarize the development technologies to improve the development effect in self-operated development zones. Different from the development concept of pursuing large-scale benefits and cost control in self-operated development zones, the economic benefits and positive cash flow are targeted and risk control is centered in international cooperation zone. In addition, six main development technologies have been formed by research and practical tests for several years, including 3D seismic-geological fusion reservoir evaluation, grid partition and checkerboard cluster well pattern deployment, well factory drilling and completion operation, TAP Lite layered fracturing reservoir reconstruction, moderate pressure relief and intermittent gas production well management, and speed string measures for production increase. By comparing development technologies applied in self-operated zones, five key development technologies are determined to be referred and three important enlightenments are concluded: (1) Continuously deepen geological study to support high-quality deployment; (2) Strengthen the top-level optimization design to support scientific and orderly implementation; (3) Strengthen the whole process management and quality control to boost the development results. The absorption and reference of key development technologies and important experience in international cooperation zone provide strong support for the improvement of development effect in new tight gas zones.

CLC Number:

TE122.14

Wang Guoting, Jia Ailin, Meng Dewei, Han Jiangchen, Shao Hui, Ji Guang. Development effect, key technology and important enlightenment in Sunan international cooperation zone in Sulige Gasfield[J]. China Petroleum Exploration, 2023, 28(2): 44-56.

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