The deepest shale gas well in China is drilled in Jiangbin, Yibin, Sichuan.

Recently, the shale gas project 泸202 drilled to 6095 meters to complete the drill, refreshing the record of the deepest shale gas horizontal well in China. Under the conditions of bottomhole temperature of up to 145 degrees Celsius, the domestically developed oil-based drilling fluid immersed for 3,354.96 hours.
The Jing 202 well is located in the Jinjiatan Formation of Jinjiatan Village, Jiang'an County, Yibin City, Sichuan Province. It is an evaluation well of the Southwest Oil and Gas Field Company and was drilled on February 24. The well is designed to have a depth of 6080 meters and a horizontal section of 1500 meters. It is drilled by the Chuanqing Drilling 70549 Drilling Team. The ZY5049 Operation Team of Chuanqing Drilling Fluid Company provides drilling fluid technical services.
The horizontal section of the Well 202 has a complex formation, a narrow density window and a high temperature at the bottom of the well. Chuanqing Drilling Fluid Company uses all self-developed oil-based Drilling Fluids in the horizontal section to optimize the rheological properties, temperature-resistant emulsion stability, sedimentation stability, anti-collapse and plugging performance of oil-based drilling fluids. Control viscosity, shear force, oil-water ratio and high temperature and high pressure water loss to ensure smooth drilling of the well.
The drilling of the Well 202 has provided a technical blueprint for the drilling of shale gas in this block, and also provided valuable technical experience for the development and utilization of shale gas in the country.

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