Abstract Recently, the reporter learned from Chuanqing Drilling Company that the Changning H2-7 well in the Changning-Weiyuan National Shale Gas Demonstration Zone in Sichuan only used 48.83 days to complete the drilling, achieving zero stop and zero accidents, marking the current drilling. Template already...Recently, the reporter learned from Chuanqing Drilling Company that the Changning H2-7 well in the Changning-Weiyuan National Shale Gas Demonstration Zone in Sichuan only used 48.83 days to complete the drill, achieving zero stop and zero accidents, marking the current drilling template. Already mature.
At present, the average drilling cycle of single well in horizontal shale gas wells in Changning District is 67 days, while the first shale gas level in China is 133 days long. China is still in the early stage of shale gas exploration and development, and drilling production is in the exploratory stage. If we do not work hard to improve speed, it is difficult to achieve scale development. This year, Chuanqing drilled a well-developed target with a length of 1,500 meters in the Changning-Weiyuan horizontal section and a depth of less than 2,500 meters.
"Behind the speed of drilling, we are the drilling template that we have summarized through experiments." Yang Jun, the captain of the 50,712 drilling team that achieved the 48-day drilling feat, told reporters that he had secrets.
Chuanqing drilled and explored this set of drilling templates and experienced many failures and difficulties. On the hardware, Chuanqing drilled a variety of international leading drill bits in each well section, and finally determined a set of personalized drill bit combinations for the surface layer, the second opening and the third opening. In order to save the drilling orientation time, Chuanqing Drilling has determined through many experiments to use the most advanced rotating orientation system in the world. This alone saves time for several days. In addition, the PDC drill + curved screw + rotary-guided drill combination creates the fastest shale gas drilling record for the rig's monthly speed of 2,764.13 m / month.
The software should also be "hard". The â€œmobile chariotâ€ composed of several technical experts was stationed at the scene to highlight the leading position of speeding up technology. On the basis of shale gas industrialization, we continuously explore and summarize the technical measures, on-site support intensification, and marketization of production services.
Up to now, on the Changning shale gas battlefield, Chuanqing drilling has a total of H2, H3 and H6 platforms for construction. In the second half of the year, multiple platforms will be launched, and shale gas exploration and development will enter the fast lane.
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