The First in The Country! Unconventional Perforation Construction Of Slim Type III Well Was Successful

The Jiaoye 23 East platform is located in Banli Village, Jiaoshi Town, Fuling District, Chongqing. It is a key platform in the oil and gas production capacity construction center of Jianghan Oilfield. This platform is the first platform in the work area to construct and operate three types of casing wells at the same time. Among them, the Jiaoye 23-Z2HF well is a slimming type III and is the first 5-inch casing completion production well in China.

The traditional bridge plug perforator combination replacement procedure is complicated and cannot meet the production timeliness requirements of the seamless zipper construction of the platform. In response to construction timeliness requirements and technical problems, the Unconventional Perforation Engineering Department gave full play to its technical advantages and carried out technology research and development. It only took 7 days to develop the "one-to-three modular perforation system", which met the timeliness requirements of platform construction, with an average construction day of 1 day. Paragraph 3.3.

During the construction process, Perforating Team 15 strictly followed the operation instructions, focused on quality control, refined the process flow, strictly controlled key links, and clarified job responsibilities to ensure the first-time success rate. Establish response plans such as targeted pump injection procedures and process control, and a "one-section-one-strategy" construction plan for upturned wells in all horizontal sections. The displacement and winch speed can be adjusted in a timely manner according to the upturned angle to effectively avoid complex well trajectories and cross-operation construction risks. , adopting the "suspended bridge plug, drag-type ignition" construction mode to ensure smooth operation of the construction.

Since 2023, the Unconventional Perforation Engineering Department has successfully developed a series of small-diameter modular perforation technology according to Party A's needs, and successfully applied it to the Slim Type III well in Jianghan Oilfield, which has reduced costs while improving oil and gas development efficiency, releasing more Well location resources. The successful completion of this well group demonstrates the company's technical strength in segmented bridge plug multi-cluster perforation joint operation, provides strong technical support for the comprehensive promotion of the "slim well" structure for shale oil and gas wells, and effectively promotes the realization of the "slim well" structure in the Fuxing Block and other areas. Benefit development strategic goals.