淮南矿区地处淮河冲积平原，域内煤层碎软、构造复杂。在复杂的地质条件下，如何实现煤层气的高效抽采，解放优质煤炭资源，成了困扰矿区很多矿井的问题。随着开采深度的增加，采区上部又有采空区、巷道等的影响，更使煤层气的抽采难上加难。

西安研究院针对矿区面对的这些问题，组织煤层气项目团队进行了针对性的技术研发工作。采用水力泵送射孔-桥塞联作射孔工艺，多簇、水平两翼+垂直向下的射孔方式，选用大通径低温可溶桥塞，大大减小了后期钻塞工程量。同时，采用动态调控的压裂施工工艺，避免了对邻近采掘工作面和上部采空区的影响并在压裂工程结束之后快速放喷，返排率超过10%。目前，该试验井日产气量突破1300立方米。

试验井的成功产气标志着水平井压裂抽采煤层气取得重大突破，为淮南地区瓦斯治理模式革新和深部资源开采技术完善奠定了坚实基础。

Huainan mining area is located in the alluvial plain of Huaihe River, and the coal seams in the area are soft and complex in structure. Under complex geological conditions, how to realize efficient extraction of coalbed methane and liberate high-quality coal resources has become a problem that troubles many mines in the mining area. With the increase of mining depth, the upper part of mining area is affected by goaf, roadway, etc., which makes it more difficult to extract CBM.

In view of these problems faced by mining areas, Xi 'an Research Institute organized coal-bed methane project team to carry out targeted technology research and development work. The hydraulic pumping perforation-bridge plug combined perforating process, multi-cluster, horizontal two wings + vertical down perforating method, the use of large diameter low temperature soluble bridge plug, greatly reduced the amount of late plugging engineering. At the same time, the dynamic control fracturing construction technology is adopted to avoid the influence on the adjacent mining face and the upper gob, and the injection is quickly released after the completion of the fracturing project, and the flowback rate exceeds 10%. At present, the daily gas output of the test well exceeds 1,300 cubic meters.

The successful gas production of the test well marks a major breakthrough in horizontal fracturing and extraction of coalbed methane, laying a solid foundation for the innovation of gas management model and the improvement of deep resource exploitation technology in Huainan area.