Geoscience-to-Production Integration Ensures Effective and Efficient South China Marine Shale Gas Development
Wu Qi;Liang Xing;Xian Chenggang;Li Xun;PetroChina Exploration and Production Company;PetroChina Zhejiang Oilfield Company;Schlumberger China;Schlumberger Changhe Petroleum Ltd.;
Shale gas development in Sichuan Basin and its adjacent areas can be difficult to apply as same mega-scale, high density and continuous and regular pad drilling as in North America(NA) because of significantly different surface and subsurface conditions than NA. In order to speed up development of marine shale gas in Sichuan Basin and its adjacent areas with minimized learning curve, this paper introduces geoscience-to-production integration of research, engineering and operation with its associated theory, methodology and workflow. Drilling Quality is firstly established because of significant challenges to drilling technologies and engineering, long well-construction cycle, and high overall cost of well. Together with Reservoir Quality and Completion Quality which are already applied in NA's shales, the Quality Triangle is formed to respect the uniqueness of China's shale plays. This Quality Triangle forms the basis for an innovative development workflow to implement geoscience-to-production integration of research, engineering and operation. In the rapid progress of factory drilling and completion of shale gas development, it aims to dynamically optimize both efficiency and effectiveness at single well, pad, and field scales with ensured systematically and continuously optimizing technologies and solutions, and accumulating knowledge and experiences in order to ultimately enhance well productivities. This paper summarizes the implementation and success of the described such into the Zhaotong Huangjinba National Shale Gas Demonstration Project. The success proves the essential valuesand general applicability of the proposed philosophy into other adjacent shale gas projects and even other unconventional blocks. Additionally, controlling factor of high productivity of the Longmaxi shale will be discussed based on currently available data and understanding.
【Fund】： 国家科技重大专项“云南昭通页岩气开采试验”(2012ZX05018-006);; 中国石油天然气集团公司重大专项“昭通示范区页岩气钻采工程技术现场试验”(2014F47-02)
【CateGory Index】： TE37
【CateGory Index】： TE37