Bohai Drilling Successfully Completed The Cementing Construction Of The First Shale Oil Well in The Dagang Oil Region in The First Year
Jan 23, 2024
On January 22, news came from China Petroleum Bohai Drilling No. 2 Cementing Company that the company successfully completed the cementing construction of the Guanye 5-5-1H well in the southern market of the Dagang Oil District. This well is the first well in the new year in the Dagang Oil District. For a shale oil horizontal well, the on-site cementing construction fully complied with the design requirements and was well received by Party A.
The completed drilling depth of Well Guanye 5-5-1H is more than 5,760 meters, the horizontal section is more than 1,500 meters long, the one-time sealing section is more than 5,760 meters, the vertical depth is more than 4,050 meters, the maximum well inclination angle is 91.44 degrees, and the bottom hole temperature is as high as more than 130 degrees Celsius. Well cementing construction faces severe challenges such as large temperature differences in long sealing sections, high pump pressure displacement, complex wellbore curvature and difficulty in running "L"-shaped wellbore casing, active gas layers with wide distribution, high risk of gas channeling, and easy leakage.
Faced with many unfavorable factors, this company selected the cementing team to undertake on-site construction tasks, gave full play to the advantages of "standardized management integration", started studying the construction plan in advance, and made full preparations in terms of equipment configuration, safety risks, construction accessories, etc., and passed By jointly stationing wells and organizing on-site cementing coordination meetings, we can predict possible risks and problems during casing running and cementing construction, formulate cementing early warning plans and guarantee plans, and optimize construction displacement, construction pressure, and cement slurry. density and other key construction parameters, and strengthen software and hardware support before construction.
During the on-site cementing construction process, this company strictly followed the cementing design at every level, strengthened technical management and construction process monitoring, and achieved continuous, stable, safe and orderly construction. The smooth cementing construction of this well accumulated valuable experience and laid a good foundation for the subsequent shale oil cementing construction of Guanye No. 6 platform of Dagang Oilfield.
