柴达木盆地油气化探应用效果

摘要

Large-scale surface oil and gas geochemical prospecting and borehole geochemical exploration were carried out in Qaidam Basin,and the results show that oil and gas geochemical exploration is of good indicating significance in search for oil and gas fields within the basin. An integrated oil and gas accumulation geochemical anomaly model dominated by circular or semi-circular halos has been established. The oil and gas geochemical exploration techniques are effective in oil and gas prospective evaluation and drilling prediction in the new exploration of the basin,and are also valuable in finding borehole oil and gas layers and oil and gas showing beds. It is thus concluded that the oil and gas geochemical exploration techniques have broad application prospect in Qaidam Basin.%在柴达木盆地进行了大规模的地表油气化探和井中化探勘探工作,结果显示油气化探对盆地内现有油气田具有良好的地质指示效果,并建立了以环状或半环状晕为主的油气藏综合化探异常模式.油气化探技术在盆地勘探新区的油气远景预测评价、钻井预测等方面效果良好,在现场随钻预测和发现井中油气产层、显示层方面亦取得了良好效果.因此,油气化探技术在柴达木盆地具有广阔的推广应用前景.