关键词: 非常规油气, 滑动导向钻井, 旋转导向钻井, 井下控制闭环, 地下地面双向通信

Abstract: Rotary steerable drilling has been put into large-scale application overseas. It has become the indispensable equipment for unconventional oil and gas drilling and promoted unconventional oil and gas revolution in the United States, changing the global energy situation. Currently, this technology is used to drill horizontal wells at home in a small proportion. Instead, sliding steerable drilling technology is still dominant in this area. Generally speaking, the production is increased comparatively slowly so far as development of unconventional oil and gas reservoirs is concerned, with a low single-well yield and a poor economic performance. The foreign rotary steerable technology system is under rapid development. The smart steerable technology leads to the “high-temperature, high build-up rate, multi-parameter and intelligent” new-generation products. This article compares and analyzes the progress and gaps in the Chinese and foreign unconventional oil and gas drilling and completion technology. It also proposes to enhance the basic research, such as smart rotary steerable drilling closed control and MWD data transmission,strengthen the studies of rotary steerable tools offset method, measurement control method and downhole power driving method, accelerate upgrading and extensive application of rotary steerable technology, and promote China’s unconventional oil and gas revolution.

Key words: unconventional oil and gas, sliding steerable drilling, rotary steerable drilling, downhole closed control, underground and surface two-way communications