红外遥感油气资源勘探技术及其有效性评估

Effectiveness Estimation of Infrared Remote Sensing to Oil-gas Resources Exploration

油气资源的遥感勘探,可分为“直接”和“间接”两大类。红外遥感油气资源勘探技术属于“直接”勘探范畴。本研究基于工业油气藏烃类微渗漏理论,利用烃类特有的2.27—2.46μm波谱双峰吸收带,以土壤烃组分异常为标志实施探测,并从理论上排除了各种地物目标的干扰,建立了一套航空遥感计算机图像处理及油气遥感信息异常提取方法。三次大面积试验表明,与已知油流区块的符合率达70％,在未知区的油气遥感异常中,一些已被钻探证实含有油气性,业已正式列入油气勘探生产计划。

Remote sensing can be divided into direct and indirect-detecting types at viewpoint of oil-gas resources exploration. Infrared remote sensing technique, which is of direct-detecting type, is based on the theory of microseepage of hydrocarbon reservior. This approach takes advantage of two-peak absorption on 2.27-2.46 μm spectrum related to hydrocarbon elements anomalies of soil. We have established a series of procedures dealing with airborne remote sensing images and anomalous information extraction methods. The accuracy we derived from the contrast with the known oil-gas fields, is 70 percent, and some remote sensing anomalies in the unknown oil-gas fields have been confirmed by succeeded drillings.