南四—五区萨葡高油层精细解释及储层预测

发布时间：2018-04-27 17:49

本文选题：萨尔图油田 + 井震联合　；参考：《东北石油大学》2015年硕士论文

【摘要】：南四-五区位于萨尔图油田开发区南部,经多年开采,地下含水率较高,剩余油气的勘探和开采变的越来越困难,油田的发展受到了制约。此次对研究区块进行了精细解释,并运用地质统计学反演对砂体的分布特征做了进一步的认识,以便于油田的进一步开采。以萨尔图油田南四-五区做为研究区块,井震结合完成了三方面的工作:①地震资料解释:应用钻井—测井—地震联合层序对比技术,通过点-线-面-空间五次实践、认识,确保钻井地质分层的准确性和井震层位对比的一致性,完成了全区的层位解释工作。利用瞬时相位技术、相干数据体、蚂蚁体小断层识别技术以及水平切片和面块切片,并结合断层的剖面特征完成了断层的解释。②沉积相研究:本次沉积微相图充分利用岩性、测井、地震等资料,结合砂岩厚度、砂岩预测沿层切片等基础图件,以短期基准面旋回层序为绘图单位进行绘制。③地质统计学反演:对研究区采用地质统计学反演,进而对研究区的砂体展布以及砂岩分布特征进行了有效的预测研究。本次研究得出研究区萨、葡、高油层构造整体表现为中北部较高,向两侧逐渐变低,西侧地层构造高低变化较快;断层整体表现为北北西向与北北东向相切割的构造格局。针对研究区目的层砂岩薄互层较发育的地质情况,优选采用地质统计学反演方法,开展拟波阻抗测井-地震联合反演,进行砂体定量预测,研究了砂体的空间分布规律,进而对有利区带进行预测,为后续的注聚合物、加密井网以及剩余油挖潜提供了可靠的依据。
[Abstract]:Nan4-5 area is located in the south of Saertu Oilfield Development Zone. After many years of exploitation, the underground water cut is higher, the exploration and exploitation of remaining oil and gas becomes more and more difficult, and the development of oil field is restricted. The detailed interpretation of the studied block is carried out, and the distribution characteristics of sand body are further understood by using geostatistical inversion, so as to facilitate the further exploitation of the oil field. Taking the South 4th to 5th area of Saltu Oilfield as the research block, well and earthquake have completed three aspects of seismic data interpretation: using the combined sequence correlation technology of drilling, logging and seismic, through five practice of point-line-plane-space, In order to ensure the accuracy of drilling geological stratification and the consistency of well seismic horizon correlation, the interval interpretation of the whole area is completed. Using instantaneous phase technique, coherent data body, ant body small fault identification technology, horizontal slice and plane block slice, and combining with fault section characteristics, completed the study of sedimentary facies of fault interpretation .2: this sedimentary microfacies diagram makes full use of lithology, Logging, seismic and other data, combined with sandstone thickness, sandstone prediction along layer slice and other basic maps, using short-term base-level cyclic sequence as the mapping unit to plot .3 geostatistical inversion: geostatistical inversion of the study area, Furthermore, the distribution of sand bodies and the distribution characteristics of sandstone in the study area are effectively predicted. In this study, it is concluded that in the study area, the whole structure of sa, Portugal and high oil layers is higher in the central and northern part, gradually lower in the two sides, and the stratigraphic structure in the west side changes rapidly, and the fault is characterized by the tectonic pattern of NNW and NNNE facies cutting as a whole. In view of the relatively developed geological conditions of sandstone thin interbedded in the study area, the method of geostatistical inversion is used to carry out the combined inversion of quasi wave impedance logging and earthquake, to carry out quantitative prediction of sand body, and to study the spatial distribution law of sand body. The prediction of the favorable zone provides a reliable basis for the subsequent polymer injection, infill well pattern and remaining oil potential tapping.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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