高分辨率反演在春风油田储层预测中的应用

Application of high-resolution seismic inversion in reservoir prediction of Chunfeng Oilfield

王有涛 陈学国 郝志伟 肖辉

中国石化胜利油田分公司西部新区研究中心，山东 东营 257000

Research Center of New District in West China, Shengli Oilfield Company, SINOPEC, Dongying 257000, China

车排子地区春风油田研究区地震剖面上,近缘沉积体系沙一段1砂组储层呈弱反射或空白反射，储层描述难度大。为解决此问题，首先，对研究区地震资料开展了具有针对性的地震拓频处理和测井资料的标准化处理，获得了较为可靠的基础资料；其次，以精确层位解释为基础，开展精细储层标定与子波提取，明确了储层与地震的对应关系；然后，建立符合地质规律的初始波阻抗模型，经试验获得了适合该区的反演参数；最后，应用测井约束地震反演技术，得到了高分辨率的波阻抗数据体。研究区沙一段1砂组有利砂体的平面展布规律分析结果表明，中部及西部近物源储层较为发育，为有利的目标区域。该研究为研究区下一步勘探部署提供了重要依据。

Sands 1 of the first member of Shahejie Formation in the submarginal sedimentary system presents the weak reflection or blank reflection in the seismic profile of Chunfeng Oilfield in Chepaizi Area. Reservoir characterization is difficult. To resolve the problem, target-oriented seismic data processing and logging data standardization processing are conducted for the seismic data of the study area, and reliable basic data have been acquired. Then, based on the accurate zone interpretation, reservoir calibration and wavelet extraction are carried out and the correspondence relationship between reservoir and seismic is made clear. The wave impedance model conformed with geologic rule is established and the inversion parameters for the area are obtained through test. Finally, high-resolution wave impedance data volume is gained by the using of logging-constrained inversion. Through the analysis of the distribution rule of favorable reservoir sand body for Sands 1 of the first member of Shahejie Formation, it is believed that the near source reservoirs present a good development in the middle part and western part of the study area. The favorable reservoirs are mainly distributed in the western part and middle part of the study area. The study result provides an important reference for further hydrocarbon exploration in the area.

10.6056/dkyqt201303006