Difficulties and countermeasures of high-pressure gas well controls in Shunnan block, Tahe oil field

The Shunnan block locates in the center of the Taklimakan Desert, which has many high-pressure gas reservoirs. Well control accidents have occurred when drilling in the Penglaiba Formation in a high-pressure re-servoir of the Shunnan X well, causing washouts at control system and surface casing. In order to ensure safety while drilling high pressure gas wells, we optimized well control technology and ground equipment, and preferred key fittings and ground pipe manifold matching combinations, which provided theoretical and practical basis for the safety drilling of high pressure gas wells in this area.