四川盆地高磨地区龙王庙组气藏高效开发有利区地震预测

发布时间：2018-03-26 12:22

本文选题：四川盆地　切入点：高石梯—磨溪地区　出处：《天然气工业》2017年01期

【摘要】：四川盆地高石梯—磨溪地区下寒武统龙王庙组气藏是国内单体规模最大的特大型海相碳酸盐岩整装气藏,找准溶蚀孔洞或者溶孔与裂缝叠加形成的高渗区是该气藏开发获得高产稳产气井的关键,而优质白云岩储层埋藏深且存在着较强的非均质性,因此储层预测难度大。为此,开展了相关的地震攻关研究并形成了配套技术,主要包括:①通过已有资料深入分析,建立地质模型,开展正演建立储层地震响应模式;②采用井驱振幅处理技术,并通过VSP测井资料求取球面扩散补偿因子,实现地震资料真振幅恢复;③利用井驱高分辨拓频技术提高深层地震数据的分辨率,获得了高品质的叠前时间偏移成果数据;④通过基于地层模型的全局自动地震解释技术实现多套滩相储层追踪,解决了多套储层横向连片、纵向叠置的预测难题,高质高效地刻画出优质储层的平面展布。利用所形成的配套技术最终实现了准确定位钻井轨迹,指导部署的开发井口口获得高产,助推了百亿立方米级特大型现代化气田的建成。
[Abstract]:The low Cambrian Longwangmiao formation gas reservoir in Gaoshititian-Moxi area, Sichuan Basin, is the largest large-scale marine carbonate gas reservoir in China. Finding correct solution hole or high permeability area formed by superposition of dissolved pore and fracture is the key to obtain high and stable gas production well in this gas reservoir, while the reservoir of high quality dolomite is buried deep and has strong heterogeneity, so it is difficult to predict the reservoir. Related seismic research was carried out and a complete set of techniques was formed, mainly including: 1, through in-depth analysis of existing data, the establishment of geological models, the development of forward modeling of reservoir seismic response model and the adoption of well displacement amplitude processing technology. The spherical diffusion compensation factor is obtained by VSP logging data, and the true amplitude recovery of seismic data can be realized. The resolution of deep seismic data can be improved by using the high resolution frequency extension technique of well drive. The high quality data of prestack time migration are obtained. Through the global automatic seismic interpretation technology based on stratigraphic model, the reservoir tracing of multiple sets of beach facies is realized, which solves the problem of prediction of horizontal and vertical overlapping of multiple sets of reservoirs. The plane distribution of high quality reservoir is characterized with high quality and high efficiency. Finally, the drilling trajectory is accurately located by using the matching technology formed, and the high yield is obtained under the guidance of the deployment of the development wellhead. The construction of 10 billion cubic meters of super-large and modern gas fields has been promoted.
【作者单位】：成都理工大学;中国石油西南油气田公司;
【基金】：中国石油天然气股份有限公司重大科技专项“四川盆地深层海相碳酸盐岩勘探开发技术现场实验”[编号:2014E-3208(GF)] 国家科技重大专项“大型油气田及煤层气开发”(编号:2011ZX05004-005、2016ZX05004-005) 中国石油天然气集团公司重大科技专项“西南油气田天然气上产300亿立方米关键技术研究与应用”(编号:2016E-06)
【分类号】：P618.13;P631.4;TE37

【相似文献】