基于煤—气协同的天然气开发走廊及规划研究

Research on natural gas development corridor and planning based on coal-gas synergy

针对新街台格庙矿区煤炭与天然气资源重叠、难以协同开发的困境,理论分析了煤—气协同开发的技术体系以及思路原则。研究表明,结合煤炭开发时序及天然气集输需求构建天然气开发走廊体系是资源立体重叠区高效开发的最优方案;矿区基于定向井和水平井的走廊间对中距离最大分别为3 250、4 350 m;兼顾煤炭生产接续和区域天然气回收时间,矿区走廊服务15 a可基本满足天然气开发经济寿命。给出了煤—气协同开发的思路及主要技术原则,通过走廊模式的时空避让可保障煤—气资源的安全、高效、有序开发。研究成果可为鄂尔多斯盆地煤—气矿权重叠区资源协同开发提供理论及案例参考。

In response to the dilemma of overlapping coal and natural gas resources in the Xinjie Taigemiao mining area,which makes coordinated development difficult,a theoretical analysis of the technical system and principles of coal-gas synergy development was conducted.The study showed:constructing a natural gas development corridor system based on the timing of coal development and the demand for natural gas gathering and transportation was the optimal solution for efficient development of resource overlapping areas;the maximum centering distances between corridors based on directional wells and horizontal wells in the mining area were 3250 m and 4350 m respectively;considering both the continuity of coal production and the regional natural gas recovery time,a 15-year service of the corridors in the mining area can basically meet the economic life of natural gas development.The ideas and main technical principles for coal-gas synergy development were provided.Spatial and temporal avoidance through the corridor model can ensure the safe,efficient,and orderly development of coal-gas resources.The research results can provide theoretical and case references for the coordinated development of resources in the coal-gas mining rights overlapping area of the Ordos Basin.