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China Petrochemical News Network News Recently, Shengli Petroleum Engineering Company Drilling Technology Research Institute "a gas reverse circulation drilling method" obtained the national invention patent authorization
.
This patent proposes a drilling method that uses double-wall drill pipe equipment for gas reverse circulation
Gas drilling has become an important speed-up technology for accelerating the development of domestic oil and gas resources due to its high efficiency and clean advantages
.
However, under the conditions of large boreholes and deep wells, the traditional positive circulation method requires a huge amount of gas and high fuel costs, which greatly reduces the overall economic benefits and severely restricts the application and development of gas drilling
Since 2016, Shengli Engineering Drilling Institute has carried out in-depth research on gas reverse circulation drilling technology and key equipment based on the scientific research project of Sinopec Group Corporation "Research on Key Technology of Gas Reverse Circulation Drilling", and completed in-depth studies including double-wall drill pipes and top drive adapters.
(Ma Mingxin, Zhu Huangang, Wang Ning)