一种适用于深潜山及内幕的有效储层地震预测方法——以廊固凹陷杨税务潜山为例

doi:10.6038/pg2019CC0306

摘要/Abstract

摘要：

杨税务潜山位于廊固凹陷北部,为一呈北东向展布多断块构成的潜山带,油气资源丰富,由于其埋藏深、裂缝-孔隙-岩溶储层交织,各向异性、非均质性较强,使得有效储层难以分辨识别、油藏分布复杂,选点部井较难.本文在充分分析沉积储层特征及油藏主控因素等基础上,选择有利岩性储层发育段,利用叠前逆时偏移和井控拓频等技术,进行高分辨率及内幕信息丰富剖面处理;利用叠前方位道集属性、分频相干和体曲率属性等技术方法,进行裂缝+孔洞复合型储层识别预测;利用AVO属性及地震频率梯度等组合技术进行储层含油气检测,实现了研究区有效储层油气甜点分布预测,其预测成果有效指导了安探1X、安探3X等工业油流井的部署,实践证明,该套组合技术方法简单、有效实用,适用于深潜山及内幕的有效储层地震预测,对类似区带或构造的有效储层地震预测具有指导意义.

关键词: 廊固凹陷, 奥陶系, 杨税务潜山, 储层预测

Abstract:

Yangshuiwu buried hill is located in the north of langgu sag. It is a buried hill belt composed of multiple fault blocks extending from the north to the east and rich in oil and gas resources. However, due to its deep burial, interlacing of fracture-porosity and karst reservoirs,strong anisotropy and heterogeneity, effective reservoirs are difficult to distinguish and identify, the distribution of oil reservoirs is complex, and the location of wells is difficult to select. In this paper, based on the full analysis of main control factors of sedimentary reservoir characteristics and reservoir, and with the select favorable period for the development of lithologic reservoir, by using prestack reverse-time migration and well control extension frequency technology, the profile is processed with high resolution and abundant inside information. the composite reservoir identification of fractured pore hole is predicted by using the technique of path set attribute, frequency division coherence and volume curvature attribute; using AVO attribute and seismic frequency gradient combined technology, oil and gas detection was carried out. The distribution range of oil and gas desserts in effective reservoirs in the study area was predicted.The prediction results effectively guide the deployment of industrial oil flow wells such as Antan 1X and Antan 3X. Practice has proved that the method of combination technology is simple, effective, practical, suitable for deep buried hill and inside the effective reservoir earthquake prediction, and it is also instructive to the similar zones or structures of seismic prediction of effective reservoirs.

Key words: Langgu sag, Ordovician, Yangshuiwu buried-hill, Reservoir prediction

中图分类号:

P631

王亚, 王孟华, 田建章, 王成泉, 彭玲丽, 冯小英, 周兴海, 张浩. 2019. 一种适用于深潜山及内幕的有效储层地震预测方法——以廊固凹陷杨税务潜山为例. 地球物理学进展, 34(5): 1930-1937. doi: 10.6038/pg2019CC0306.

WANG Ya, WANG Meng-hua, TIAN Jian-zhang, WANG Cheng-quan, PENG Ling-li, FENG Xiao-ying, ZHOU Xing-hai, ZHANG Hao. 2019. Effective reservoir seismic prediction method for deep and inner buried-hill: taking Yangshuiwu buried-hill in Langgu sag for example. Progress in Geophysics. 34(5): 1930-1937. doi: 10.6038/pg2019CC0306.

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