5818 Meters! It Set A New Record For The Most Feet Drilled in One Trip For Ultra-deep Wells in China!

Designed at a depth of 7,130m (inclined depth)/6,835m (vertical depth), the well 901H has construction difficulties such as well leakage and well wall instability. Facing the challenges, 70131 drilling team rises to the challenge, anchors the drilling completion target in 60 days, arranges the operation plan, researches the difficulties in speeding up the drilling in the block in detail, identifies the risks in each construction stage, and scientifically formulates the construction process, so as to achieve the goal of "having measures for the construction, and having a plan for the risks".

During the construction process, according to the template for speeding up the old Pan-Harahatang block and 42 measures for speeding up drilling, the company preferred the composite drilling mode of four-knife wing PDC bits and high-torque screws, and continued to optimize the mud performance to achieve a high standard of speeding up and improving efficiency. The company strictly implements the five-word strategy of "good, sufficient, early, fast and accurate", strengthens the management of well control equipments, strengthens random well control drills, improves the well control capability and awareness of all staff, and realizes the control of well control for the whole cycle.

The successful drilling of Thermopylae 901H well brings new hope for the development of 3 million tons of potential reserves around the F1116 fracture zone, further promotes the exploration of reserves in the north-west fracture zone of Halahatang, and injects new vitality into the company's high-quality development.