【摘要】 为提高靖边气田S190井区水平井储层钻遇率,综合应用三维地震、测井和钻井资料,经过制作合成记录,层位标定,利用上下标定层位构造趋势控制,结合钻井分层厚度比例,横向预测得到主力气层奥陶系马五小层顶面小幅度构造图,应用地层厚度法及印模法获得石炭系底至马五底的厚度图以及前石炭系的古构造图。对上述三图进行综合研究分析,提出水平井部署建议,已钻两口高产水平井钻进轨迹与马五顶面基本一致,相关系数分别为0.6548和0.8547,说明研究区古构造较高部位、较大的储层厚度和现今小幅度构造高部位三者叠合位置是寻找高产区以及指导水平井部署的有利指向。更多还原

【Abstract】 To increase the drilling success ratio in reservoirs of horizontal well in S190 well block,the low amplitude folds of top surface of Ma513 that was the main gas layer in Ordovician were drew,after applying some ways including make synthetic seismic record,horizon demarcate,the combination of the structural trend surface of horizon demarcate(Tc and T014) with the thickness ratio of formation classification of every well and lateral prediction based on the 3d- seismic explanation and logging and drilling data.Moreover,the thickness between the bottom of Carboniferous and the bottom of Ma522 and the Ordovician paleokarst landform were mapped by way of the strata thickness and the impression method.Then,three maps above were analyzed comprehensively,the relationship between both horizontal well trajectory that were drilled and the top surface of Ma513 were basically matched as related coefficient 0.6548 and 0.8547.Thus,this paper gives rise to highly important guiding and practical significances on the horizontal well deployment site and search high productivity zones of gas field,where the higher position of the paleokarst landform,the thicker place of reservoir and the higher location of present structure map were coincident.更多还原