The domestic underbalanced drilling is generally implemented, and the Rotating BOP is the key equipment with high technical content. A kind of Rotating BOP is being developed in China. Its performance index refers to the design of current mainstream related equipment. There are several difficulties in the development of Rotating BOP, which mainly focus on the sealing rubber core, rotary dynamic seal and bearing. The key to ensure the drilling safety is to meet the practical application of their life.
Rotating BOP has the advantages of novel structure, excellent performance, stable performance, high reliability and easy operation. All the indexes meet the design requirements, effectively improve the technical level of underbalanced drilling equipment, and further meet the increasing demand of underbalanced drilling market.
Rotating BOP has the performance of conventional universal BOP and can be used with top drive. Sealant core can be opened to seal any cross-sectional shape of drill string; increase the automatic compensation function of the rubber core, can automatically supplement the rubber quantity of the rubber core to ensure reliable sealing