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充分利用大量的测井资料对研究区延长组烃源岩的有效性进行全井段整体研究,克服了可能会由地球化学资料不系统、单井地球化学数值不连续等方面的局限性而造成的对有效烃源岩空间分布特征难以把握的困难,提出了用优质烃源岩体积与有效烃源岩体积的比值作为有效烃源岩分布质量评价参数,运用该参数可以较好地评价研究区延长组不同油层组烃源岩的有效性及品质,比较客观地揭示了研究区有效烃源岩分布明显受沉积环境的控制,靠近湖盆中央的深湖—半深湖相带是优质烃源岩的主要发育区,同时预测了研究区常规与非常规油气勘探的重点区域。
Making full use of a large number of well logging data to study the validity of the Yanchang Formation source rocks in the study area, the whole section of the whole well is studied to overcome the limitations that may be caused by the unsystematic geochemical data and the single-well geochemical numerical discontinuities The difficulty of grasping the spatial distribution of effective source rocks is difficult. The ratio of the volume of high quality source rocks to the volume of effective source rocks is proposed as the evaluation parameter of the distribution of effective source rocks. By using this parameter, Extending the validity and quality of source rocks of different oil reservoirs in the Yanchang Formation revealed objectively that the distribution of available source rocks in the study area is obviously controlled by the sedimentary environment. The deep lacustrine-semi-deep lacustrine facies near the middle of the lake basin are high-quality hydrocarbon sources Rock main development area, at the same time predict the study area of conventional and unconventional oil and gas exploration key areas.