春光油田白垩系水平井分析与研究

Analysis and Research of the Horizontal Well in the Cretaceous system in Chunguang Oil Field

春光油田白垩系油藏特点复杂,油层较薄,储层的非均质性强,砂体的平面展布变化较快,并且该层系的含油性极不均匀,因此对水平井测井资料的解释评价带来很多不利影响。本文首先研究了水平井对测井的影响因素及结果,在此基础上以常规岩心实验为主,展开储层岩性、孔隙结构、导电机理等研究;再结合测、录井资料以及试油投产资料综合分析白垩系稠油储层测井响应特征,进行"四性"关系研究,建立精细测井解释标准,达到评价储层、识别油水层这一最终目的。

Chunguang oilfield Cretaceous reservoir is complex ： thin oil reservoir, strong reservoir heterogeneity, the plane distribution of sand body varies rapidly, and the oil - bearing strata are very uneven, so the interpretation and evaluation of horizontal well logging data bring many adverse effects. This paper studies the influence of horizontal well on logging and based on this, conventional core experiment was carried out, so was the study of reservoir litho logy, pore structure and conductive mechanism; combined with logging data and oil production test data, Creta- ceous heavy oil reservoir logging response characteristics were analyzed, the ＂four＂ relationship study carried out, established the standard of fine logging interpretation, so as to achieve the ultimate goal of evaluation of reservoir, oil -water layer identification.