鄂尔多斯盆地西缘中阶煤储层改造效果分析

Analysis of Reconstruction Effect of Middle-Rank Coal Reservoir in Western Ordos Basin

储层改造是煤层气增产的最有效方式之一,而不同区块的储层物性特征和构造地质条件差异性较大,储层改造工艺及参数的合理选择是决定改造增产效果的关键因素,文章针对鄂尔多斯盆地西缘北段贺兰山煤田某矿区中阶煤储层已实施的3口煤层气直井的压裂工艺和排采产气效果分析,对水力压裂改造工艺参数提出了优化改进方向,对本地区今后煤层气高效开发具有重要意义。

Reservoir reconstruction is one of the most effective ways to increase coalbed methane production.However,the physical properties of reservoirs and tectonic geological conditions among different blocks are quite different.The rational selection of reservoir reconstruction technology and parameters is the key factor in determining the effect of the reconstruction for increased production.This paper analyzes the fracturing technology and gas production effect of three coalbed methane vertical wells in a middle-rank coal reservoir of Helan Mountains Coalfield in the northern section of the western margin of Ordos Basin.The optimization and improvement direction of hydraulic fracturing technology parameters is put forward,which is of great significance to the efficient development of coalbed methane in this area in the future.