非震综合物化探油气预测

目前非震综合物化探方法油气预测研究中存在的主要问题有 :一方面缺乏系统与综合的基础性理论研究 ,异常形成的机理还不十分清楚 ;另一方面在参数的优化组合及异常的求取上尚有诸多不足。针对后一方面的状况 ,选择了松辽盆地东岭构造作为实验区进行探索。选取低能吸附烃、放射性测氡及土壤热释光 3类参数进行了优化组合 ,利用人工神经网络技术计算了组合熵 ,然后对各值采用泛克里格法求取异常 ,取得了良好的效果 ;并指出下一步研究应从异常形成的机理入手 ,建立三维非震综合物化探油气预测模式 ,这是提高油气预测成功率的可行途径之一。

HYDROCARBON PREDICTION OF UNSEISMIC INTEGRATED GEOPHYSICAL AND GEOCHEMICAL METHODS

In this paper, current situation of the unseismic integrated g eophysical and geochemical exploration for hydrocarbon prediction is discussed. It is concluded that all these projects in this field focus mainly on the sh ort-term benefits; therefore the projects are rarely concerned about systematic and comprehensive basic the oretical research and the mechanism for the formati on of the anomaly caused by reservoir has not been very clear.Taking the Donglin g area in the Songliao Basin as an experimental area, the parameters like soil- absorbed hydrocarbon, soil thermoluminescence and Rn detection have been sorted and optimized.An integrated geophysical-geochemical evaluation to indicate the favorable exploration with BP neural networks and combination entropy has been d eveloped, and the result is consistent with the known drilled well's data.In addition, the researeh tendency in this field has been proposed.