煤层气区块勘查方案研究——以沁水盆地某区块为例

Study on CBM Block Exploration Scheme——A Case Study of a Block in Qinshui Basin

地质依据的充分性、勘查方案的技术可行性、经济合理性及可操作性,对于勘查目的的实现及矿权维护至关重要。初步分析了沁水盆地某煤层气区块地质条件,根据油气勘查工程部署原则,提出了总体勘查思路。在分析煤层空间分布、厚度、埋深、含气性等参数的基础上,用多因素叠合法优选出勘查有利区,根据地表情况确定参数井井位。优化了钻井布置与工作量投入,提出了煤炭与煤层气综合勘查预期成果,形成了合理的勘查方案。

The geological basis sufficiency, exploration scheme technical feasibility, economic rationality and operability are of great concern to exploration purpose realization and mining right maintenance. After initially analyzed geological condition of a CBM block in the Qinshui Basin, based on oil and gas exploration engineering deployment principle, put forward general exploration conception. According to parameters of coal seam spatial distribution, thickness, buried depth and gas-bearing property analysis, through multifactor stacking method, has optimized exploration favorable area, based on surface conditions determined parametric well location. Thus optimized borehole layout and workload put into and worked out coal and CBM integral exploration expected results, finally formed reasonable exploration scheme.