应用测井约束地震反演技术描述桩106断块储集层

The application of well log constrained seismic inversion to the description of reservoirs in Zhuang 106 block.

应用测井约束地震反演技术描述桩１０６ 断块储集层［刊］／ 刘磊， 邢正岩．．．∥石油勘探与开发．１９９９，２６（５） ．８０ ～８２桩１０６ 断块位于济阳坳陷埕东凸起北部缓坡带，是胜利油田近几年滚动勘探开发效果较好的产能建设区块。该区属多期分流河窄道沉积， 厚度薄， 油层虽较单一，但成藏主要受岩性控制， 因此勘探难度高， 开发风险大。测井约束地震反演用已知的地质信息和测井资料建立初始的波阻抗模型， 然后采用模型优选迭代算法不断修改和更新波阻抗模型， 使正演的合成地震记录与实际的地震记录达到最佳吻合， 最终的模型便是反演的结果。针对桩１０６ 断块的储集层发育情况， 建立了一套适合本区特点的处理流程，包括测井资料的分析校正、地震子波的提取、控制层位的解释、初始波阻抗模型的建立、反演参数的选取等５ 个技术环节。采用此方法精细描述储集层的空间展布，并与其它优化技术相结合，按照滚动程序高速高效勘探开发桩１０６ 断块， 取得了较好的勘探开发效果。图３ 参２（ 邹冬平摘）

Zhuang 106 block is located in the north gentle slope of Chengdong uplift, Jiyang depression, which is a block that has obtained fairly good result in progressive exploration and development and in production capacity increment. In this block, the reservoir beds are of multiple stage narrow distributary deposition, being relatively thin, and the formation of oil reservoir is lithologically controlled though it is relatively simple in reservoir formation; and therefore, high difficulties existed in exploration and high risk in development. Well logging constrained seismic inversion uses known geologic informations and well logging data to establish a wave resistance model and then by optimization displacement algorism the wave resistance model is modified and reestablished to give an optimized conformance of the conversion of the synthetic seismic with the actual seismic records, this final model is the result of inversion. A set of flow chart suitable to the characteristics of this block is established, including the analysis and calibration of well logging records, extraction of seismic wavelets, interpretation of controlled strata, establishment of an original wave resistance model, and selection of inversion parameters, to give a special distribution of reservoir beds. By this method and combined with other optimized techniques, Zhuang 106 block is developed according to a progressive exploration and development program, and a fairly good exploration and development result is obtained.