17545 Meters! Bohai Drilling Breaks The Record For The Shortest Drilling Cycle!

This team always adheres to the production organization concept of "everything revolves around the wellbore", insists on paying close attention to each production link, and strives to promote seamless connection of production decisions, seamless connection of production processes, and seamless cooperation of relevant parties to ensure that the overall organization speed is achieved. . In view of the difficulties of the third open section of Well Manshen 801, such as long open hole section, multiple stratigraphic sequences, easy to get stuck, easy to leak, and easy to deflect, before construction, technical experts and well team technicians were organized to carefully analyze the data of adjacent wells and formulate avoidance measures in advance. , in actual drilling, the drilling parameters and drill bit selection were optimized, and the "three major and two high" drilling parameters of "large drilling pressure, large torque, large displacement, high pump pressure, and high speed" were implemented, and the 1.25° screw + PDC selected special-shaped tooth and flat tooth drill bits according to different formation characteristics, and achieved a single-day footage record and a two-foot footage cycle record in the block.

This team has been rooted in desert construction all year round. In response to the problems of high gas-oil ratio and predicted hydrogen sulfide content in the Manshen 72-H1 well, as well as high risks of well control in the target layer, it strengthened technical management and made plans in advance for well leakage, venting, and total hydrocarbons exceeding 30%. Risk prevention and control measures for overflows and other abnormal working conditions will be implemented to prevent illegal operations at key positions such as brakes and well control. During the construction, a 1.5° curved screw was used with a highly aggressive 5-blade PDC drill bit, and the hydraulic parameters were continuously strengthened based on the adjacent well data. On the basis of increasing the drill bit pressure drop and increasing the drilling displacement, the drilling operation procedures were continuously standardized and improved to achieve This ensures safe drilling and significantly increases the speed.

This team has always adhered to the concept of "not drilling even one meter of unsafe footage". Reducing the complexity of safety and well control accidents is an important way to improve speed. Pay close attention to the implementation of safety measures and strengthen process monitoring of key links to provide a solid safety guarantee for speeding up production. During the construction process of Well Manshen 809, we gave full play to the advantages of integrated engineering geology, made good geological predictions, standardized single-piece and inch-by-inch drilling operations, strengthened the supervision of cadres at the side station, and paid close attention to abnormal changes in drilling parameters and well inclination monitoring. , to ensure the safe and smooth progress of construction.