The reporter learned from the 1205 drilling team of the drilling engineering company drilling company no. 2 that at 11:30 on November 14, the GY2-Q1-H4 well drilled by the 1205 drilling team was successfully drilled, setting a new record for the shale oil drilling cycle of 13.77 days in the whole well.
It is reported that the GY2-Q1-H4 well is a platform development horizontal well of the Gulong Shale Oil No. 2 Test Well Group, the well is 5156 meters deep, the horizontal section is 2546 meters long, the target layer is easy to collapse, easy to leak, the horizontal section is long, and the drilling construction risk is high and difficult.
Before construction, the project management department of the engineering technology department of the drilling engineering company and the 1205 drilling team refined the construction plan of "one well and one policy, one section and one policy, one drilling and one policy", focusing on analyzing the block data, and making a good study of the problems that may occur during the construction for the risks of shale spalling, collapse, formation tilting, well leakage, etc., and formulating control measures and speed-up plans for key well sections.
At 12 o'clock on November 6, the well was drilled three times, in view of the characteristics of many stratigraphic mezzanines and difficulties in inclination of the inclined section, technical experts and on-site technicians strengthened the drilling parameters, explored the use of six-blade PDC drill bits, improved the mechanical drilling speed and slope, the drilling cycle of the inclined section was only 1.48 days, and the performance maintenance of the drilling fluid was synchronously done, and the drilling column cycle schedule was strictly implemented. Ensure wellbore cleanliness, improve well quality, and achieve rapid drilling.
The underground situation is complex, the aboveground wind and snow are mixed, and the 1205 drilling team is the optimal learning curve of benchmark shale oil, shortening the drilling record of the block from 14.42 days to 13.77 days, which saves less than half a day and is cut out minute by minute from the connection process between various processes. This is the result of the combined action of skill and spirit, the infinite possibilities created in a limited time and space.
With a super high level and a high sense of responsibility, the 1205 drilling team continues to create various construction records, which can be called "record-breaking professional households".
Li Hongwei Li Haiyang reporter Chen Jingyu photo / Li Hongwei