【摘要】 中国西部T盆地ZY构造带在TY2井5900m深层发现下古高产储层,但由于地表复杂、地震物性条件差,一直难以有效的查明白云岩储层的分布;为此本文在该区开展了大功率长偏移距瞬变电磁(LOTEM)测深勘探,并取得了良好效果。本文介绍了沙漠区大功率LOTEM测深法工作原理和资料处理解释中剩余异常的求取和测井微电性层对比解释方法,展示了用大功率LOTEM测深法研究白云岩储层的成果,表明大功率LOTEM测深法对ZY构造带深层高阻碳酸盐岩中的低阻白云岩储层研究是有效的。该方法可以在类似物性条件下的其它地区作为储层研究的有效手段推广应用。更多还原

【Abstract】 In the ZY structure belt of the T basin in western China, a dolomite reservoir of the lower Paleozoic with a high product was discovered at a depth of 5900 m in the well TY2. It is, however, difficult to determine its distribution due to the complicated terrain and poor seismic physical properties. To tackle this problem, the high-power LOTEM survey is conducted in this area, and has achieved ideal results. This paper presents the principle of the high-power LOTEM sounding, the method to extract residual anomalies from data, and the interpretation in comparison with micro logging. It also reveals the delineated dolomite reservoirs by this method, and shows that the high-power LOTEM method is an effective way for probing the low-resistivity dolomite reservoirs buried in the deep high-resistivity carbonate formations. This method can be applied to the other places with the similar physical properties for the purpose of reservoir investigation.更多还原