岳丽君,钱艳苓
YUE Lijun,QIAN Yanling

• 1:大庆油田有限责任公司勘探开发研究院

摘要(Abstract)：

大庆油田A区块扶余油层为低孔特低渗透储层,这类储层河道砂体变化快,规模较小,单层厚度薄。为降低开发井特别是水平井的钻探风险,采用基于波形特征指示的井震联合反演技术,利用地震波形的横向变化信息代替变差函数,驱动井间储层模拟,实现了井震协同的高分辨率储层预测。波形指示与地质统计学自然伽马反演对比和钻井资料验证表明,地震波形指示反演在纵向上和横向上都能更精确地刻画目的层砂体的空间展布特征,平面预测符合率为78%,砂岩和油层钻遇率为100%。研究成果为水平井精准部署提供了技术支持。
Fuyu oil layers in Block A of Daqing Oilfield are low-porosity and ultra-low permeability reservoirs characterized by fast-changed channel sandbodies, rather small scale and relatively thin single-layer thickness. In order to reduce the drilling risk of the developing wells, especially horizontal wells, with the help of the well-seismic joint inversion technology based on the waveform characteristic indication, the variation function was replaced by the lateral change information of the seismic waveform to drive the inter-well reservoir simulation and realize the high-resolution reservoir prediction of the well-seismic collaboration. By means of the contrast of natural gamma inversion between the waveform indication and the geostatistics as well as the verification by the drilling data, the obtained spatial spread characteristics of the target layer sandbody are more precisely described in the vertical and horizontal directions, for the horizontally predicted coincidence is up to 78%, and the drilling rates of the sandstone and oil layer reach 100%. The study achievements have provided the technical guidance for the precise deployment of horizontal wells.

关键词(KeyWords)： 波形指示反演;井震协同;薄储层预测;地质统计学反演
waveform indication inversion;well seismic coordination;thin reservoir prediction;geostatistical inversion

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项“松辽盆地致密油开发示范工程”(2017ZX05071)

作者(Author): 岳丽君,钱艳苓
YUE Lijun,QIAN Yanling

DOI: 10.19597/j.issn.1000-3754.201909027

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