富县探区页岩气勘探开发的几点认识

Some Understandings to Shale Gas Exploration and Development in Fuxian Exploration Area

摘要:

鄂尔多斯盆地中南部“定边-华池-富县”L形页岩气有利发育区，发育大套黑色页岩，有机质含量高、成熟度适中、构造破坏小。特别是富县探区除具有良好的生油条件外，还具有页岩气成藏条件，但其储集层物性差，孔隙度和渗透率极低，自然产能较低，开采难度大，页岩气的经济开采还处于探索起步阶段。针对目前中石化华北分公司在富县区块的工艺试验,在分析国外页岩气开发技术现状的基础上,提出了富县探区页岩气勘探开发的认识和建议。

Abstract:

“Dingbian-Huachi-Fuxian” is a favorable development zone of shale gas shaped in letter “L” in the central and southern Ordos basin, large complete set of black shale was developed there with high organic matter content, moderate maturity and slight structure destruction. In Fuxian exploration area, the economic production of shale gas is still in early stage of exploration, there is not only good oil generating condition, but also shale gas reservoir forming condition; but with poor reservoir properties, very low porosity and permeability, low natural productivity and being difficult to develop. According to the process test in Fuxian block and based on the analysis on the present situation of foreign shale gas development technique, the understandings and suggestions for shale gas exploration and development in Fuxian exploration area are put forward.