At 9:00 a.m. on May 6, 2022, Well Rentan 1, a key pre-exploration well drilled by the 90111XN drilling team of Sinopec Southwest Petroleum Engineering Company Drilling Branch No. 1, was successfully drilled to a depth of 8,445 meters, which refreshed the Sichuan Basin. The large-size drill bit in the northern Sichuan block uses drilling fluid to drill the deepest, with the shortest drilling cycle, the highest ROP, and the deepest record of micro-coring footage, creating the most traversed layers in the Dengying Formation in the Sichuan-Chongqing area and the open-hole section Longest and many other records.
Well Rentan 1 is a key pre-exploration well with a size of 1 and 5, which was deployed at the high point of Renhechang in the southern section of the Tongnan anticline in the low and gentle structural belt of northern Sichuan, Sichuan Basin. The Lower Cambrian Longwangmiao Formation, the Upper Sinian Dengying Formation, and the Middle-Upper Cambrian Xixiangchi Formation are also explored for their exploration potential, development and oil and gas properties.
As the No. 1 well in this area, this well has a large formation dip, extremely difficult to control well deviation, lacks referenced adjacent well data, and blowouts and leaks in the same layer, active oil and gas shows, high sulfur content, high-pressure saline aquifer pollution, drilling risks and Construction is extremely difficult.Editor/Ma Xue
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