摘要
应用测井资料建立页岩气地质特征定量模型,能够方便快捷地获取连续泥页岩层段的地质信息,从而为页岩气地质研究提供依据。以页岩气测井评价方法为基础,结合鄂尔多斯盆地下寺湾—云岩地区延长组长7段页岩地质特点,以岩心测试数据作为修正标准,使用Δlg R法、声波时差法和孔隙度—成熟度相关性方法,建立了研究区长7段有机碳含量、孔隙度和成熟度的测井计算模型。通过模型计算了研究区内多口单井页岩地质参数,从而预测长7段页岩有机碳含量分布在0.5%～6.5%之间,镜质组反射率介于0.65%～1.25%,孔隙度普遍偏低。并以此为依据,明确了长7段页岩地质特征及其展布规律,为后期页岩气勘探开发奠定了基础。
By establishing a quantitative model using logging data, it is simple to obtain the geological information of continuous mud shale intervals, and provide basic data for shale gas geological research. In this study, based on the shale gas logging evaluation method, considering the geological characteristics, taking the core data as the correcting standard, and using the Δ1 gR method, the AC method and the porosity-maturity correlation method, logging models were built, involving organic carbon content, porosity and maturity in the Chang 7 Member of the Yanchang Formation in the Xiasiwan-Yunyan area, Ordos Basin. Application of the models in individual wells estimated the organic carbon content from 0.5% to 6.5%, the vitrinite reflectance from 0.65% to 1.25%, and low porosity in the Chang 7 shale. Based on these data, the geological characteristics and the distribution law of the Chang 7 shale are clear, which lays a foundation for future exploration and development of shale gas.
作者
王龙
张金川
唐玄
Wang Long;Zhang Jinchuan;Tang Xuan(CNOOC Research Institute Co.,Ltd.;China University of Geosciences (Beijing))
出处
《中国石油勘探》
CAS
CSCD
北大核心
2019年第1期129-136,共8页
China Petroleum Exploration
基金
国家科技重大专项"页岩气资源潜力评价方法与勘查技术攻关"(2016ZX05034)
