黔东南岑1井区页岩气微生物勘探

油气微生物勘探法(MPOG)是地表勘探法的一个分支,主要研究近地表土壤层中微生物异常与地下深部油气藏的相关关系。该方法成本低廉、简便快速、多解性小,根据它可检测微生物异常区,评价和预测下伏油气藏的存在和性质。在岑1井区内,以微生物异常为基础,对微生物异常区域进行了分析研究,初步评价了该井区内的页岩气资源潜力。结果表明:工区内微生物异常分布非均匀,有三处相对较大的微生物异常区,表明页岩气潜力较大;微生物异常在方位上表现为由弱到强的变化趋势,异常区呈现北向东趋势;在断层附近,页岩气异常显示较好;工区内基本无油异常,均处于背景值状态,并根据区域地质资料给出了勘探建议。

Microbiological prospecting technology for oil and gas （MPOG） is a branch of surface reservoir evaluation, it mainly studies the correlation relationship between the microbiological anomaly in the subsurface soil layer and the reservoirs in deep underground.It is characterized by low cost, simplicity, convenience, and low ambiguity. It can be based on anomaly detection of micro-organism, can be evaluated and forecast oil and gas underlying the existence and nature of possession. Microbiological anomaly area was analyzed based on the microbiological anomaly in well Cen-1, and the hydrocarbon potential of shale gas was evaluated. The results showed that heterogeneity of microbiological anomaly exists with three relatively large areas, which proved great hydrocarbon potential of shale gas. The direction tendency of microbiological anomaly from north to east revealed a weak to strong trend. The microbiological anomaly of shale gas indicated a fair well near faults. Oil anomaly didn＇ t found yet in the study area with a normal background value states. Advice for next stage was given based on the regional geological statistics