Daqing Drilling And Shaanxi-Jin Drilling Set Two Important Records For CNOOC

  On October 18, exciting news came from Daqing Drilling. The LGPC4-6-7H well drilled by the 50018 drilling team of the company’s Shaanxi-Jinxi Drilling Project Management Department was successfully drilled to a depth of 3,192 meters. The well was an unprecedented onshore record for CNOOC. The drilling and completion cycle of a deep coal-bed methane horizontal well was 13.66 days, and the daily footage of the horizontal section was 460 meters, marking a new breakthrough in drilling speed.
  Since the beginning of the year, the strategic cooperation between Daqing Drilling and China National Offshore Oil Corporation has been continuously deepened. 31 drilling rigs and multiple technical service teams in various fields have entered the market, forming a good momentum for integrated geological engineering services. At the same time, the Shaanxi-Jinxi Drilling Project Management Department actively improved its on-site service capabilities and strengthened technical research. It broke production records 14 times, received 12 letters of commendation from Party A, and maintained the drilling and completion cycle of the horizontal section of coalbed methane and the highest drilling footage in a single trip. , the average daily footage of a single well, the daily footage of a single day and many other records. With superb professional technology, safe and efficient work performance, it has won recognition from all parties, allowing the Ironman team to raise the flag and set standards in the land of Shaanxi and Shanxi.
  Well LGPC4-6-7H is located in Shenmu City, Shaanxi Province. It is the second deep coalbed methane horizontal well opened in the Shenfu Work Area of CNOOC China United Company. The construction of the two wells in front of the platform showed that the Liujiagou Formation formation was hard and the drilling time was slow. To solve problems such as orientation difficulties, Daqing Drilling selects drilling speed-increasing tools to enhance the wear resistance of drilling tools to hard formations, improve the efficiency of single-trip drilling operations, make timely adjustments to drilling fluids, and adjust wells in advance to adapt to formation properties before drilling into complex formations. fluid to ensure the continuity of drilling operations and underground safety. A single drill bit achieved 1,139 meters of footage in the vertical well section, with an average ROP of 28.83m/h.
  Zhang Qingxiu, deputy manager of the Shaanxi-Jinxi Drilling Project, said, “Based on the construction experience of the first two wells, this well was planned ahead of time, and the overall optimization of the drilling tool assembly and drilling fluid became the breakthrough point for this well to create indicators. It effectively solved the problems of large well deviation, pressure support, and drilling fluid. Problems such as slow progress and timeliness. At the same time, personnel from various departments, cementing, drilling fluids and well teams work closely together to formulate detailed production plans to ensure that each process is closely connected. Provide strong support for improving the speed and efficiency of the well and creating high indicators in the work area support."
  It is understood that the Daqing Drilling Shaanxi-Shanxi Project Department set a drilling and completion cycle record of 16.88 days for the same type of well in Well LGPC4-6-6H on October 1. The well set this record again only 17 days later. Refreshed and achieved high efficiency of well completion 18.34 days ahead of schedule, and the ability to increase drilling speed continues to increase.
  Up to now, the Daqing Drilling Shaanxi-Jinxi Drilling Project Management Department has started 249 drilling holes and completed 248 drilling holes, with a total footage of 678,500 meters. It is constantly promoting technological innovation and laying a solid foundation for the continued expansion of the PetroChina, Sinopec, and CNOOC markets.