Application Of Horizontal Wells Drilling Technology Of Shale Gas In JinQiu Block

Shale gas successful development in USA caused a revolution on a worldwide scale as a low carbon and clean renewable energy. China has good shale gas formation and enrichment of the geological conditions, resource potential, the development of shale gas production capacity, the ability to raise gas security and domestic oil, enhance national energy security, with a real strategic significance.Horizontal wells in shale gas as a key technology, play an important role in improving shale gas production, reduce the cost of shale gas development process. Cost is usually horizontal wells is generally 1 to 1.5 times the vertical wells, while production is about 3 times the vertical wells. If the cluster development horizontal wells in the development process, to achieve "factory work" to reduce development costs, with a significant increase in the reservoir control. Because of complex geological structure, geological drilling process design and implementation drill formations are quite different, the upper strata and shale reservoirs leak, spraying, collapse and other downhole multiple, vertical section vertical and fast, the track segment level control, borehole clean issues outstanding, formation drillability poor ROP low. Lack of targeted drilling and cementing slurry system, reservoir protection difficult, low development cost recovery is high. Therefore, how to effectively control the drilling costs and protect the environment and prevent accidents become a problem underground operator must face.By analyzing the development of the shale gas business conditions internationally, through the basic characteristics of shale gas research status and distribution of shale gas drilling technology drilling and completion technology research difficulties were analyzed, and for autumn block shale horizontal drilling technology analysis and research, forming a section of rapid drilling vertical wells, optimize well construction, personalized drill, drilling fluid system and performance control, anti-collapse and other autumn regions related horizontal drilling technology system. Not only can solve the poor wellbore stability, horizontal section and easy card, borehole trajectory difficult to control and other issues, but also helps to increase drilling speed and helps to secure drilling, energy saving, reduce drilling costs, with concurrency and exploit shale gas and other low resource efficiency is of great significance.