The Research And Application Of Field Long Horizontal Well Drilling Technology In Changqing Gas

With the deepening of the efficient development and construction of oil and gas field, horizontal well drilling technology is constantly evolving, especially the horizontal wells with long horizontal-section. The application in domestic oil and gas fields for long hole section drilling and completion technology is still in the development stage, the horizontal well drilling technology is particularly to be overcame, while the foreign companies for long horizontal section drilling techniques are highly confidential, only to provide technical services for most Tarsus Drilling Tools. Therefore, to meet the requirements of reasonable and high-speed development in Changqing gas field, it is necessary to carry out research and analysis of drilling and completion technology for the horizontal wells with long horizontal-section in Changqing gas field, improving well production and gas development effectiveness.Based on the research of domestic and international data, and the analysis of drilling technology, drilling and completion fluid technology of horizontal well with long horizontal-section in gas field. This paper optimized a complete set of supporting drilling technology of horizontal well with long horizontal-section, which is suitable for Changqing gas field, effectively solved the drilling technical difficulties such as large friction, large torque and the difficulty of horizontal section pressure in long horizontal section, and obtained a set of safe and quick drilling and completion fluid system that is applicable for horizontal well drilling in Changqing field through independent research. Research has solved the problems of the vertical deep uncertainty of objective layer, judgment of the horizon of horizontal section in the field experiments by FEWD geosteering drilling technology. Through the research of the project, and combined with years of continuous exploration and development of site construction in changqing gas field, drilling technology of horizontal well with long horizontal-section acts as an important technology of efficient development and maximizing the effective drilling footage, it can preliminary fonn a complete set of drilling technical specifications that can be applied to jingbian gas field and sulige gas field, and provide theoretical support and technical guidance for drilling long horizontal section in oil and gas well.