| 歧口凹陷歧北斜坡区沙一下湖相碳酸盐岩储层裂缝预测 |
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| 引用本文： | 周淑慧, 付立新, 楼达, 汤戈, 杨冰, 王瑀. 歧口凹陷歧北斜坡区沙一下湖相碳酸盐岩储层裂缝预测[J]. 海洋地质前沿, 2016, 32(2): 20-28. doi: 10.16028/j.1009-2722.2016.02004 |
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| 作者姓名： | 周淑慧 付立新 楼达 汤戈 杨冰 王瑀 |
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| 作者单位： | 中石油大港油田公司勘探开发研究院, 天津 300280 |
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| 基金项目： | 中国石油天然气股份有限公司项目"歧口富油气凹陷大油气田勘探及综合配套技术研究"(2008-030504) |
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| 摘 要： | 针对歧北斜坡区沙一下湖相碳酸盐岩储层,首先在剖析储层裂缝的地质特征基础上,运用基于叠后地震数据的曲率属性、landmark构造体属性等裂缝检测技术对裂缝发育带进行宏观定性预测;其次,采用FRS叠前各向异性裂缝检测技术对研究区沙一下储层裂缝发育方向、密度等详细特征进行了定量预测。通过定性和定量预测结果的相互补充,得到了研究区沙一下储层裂缝发育特征:沙一下碳酸盐岩储层裂缝发育主体区位于南大港(NDG)断层北部坡折带附近,主要为近东西向展布的构造裂缝,平面上呈块状或带状不连续分布。最终预测结果与实际钻井情况基本一致,取得了较好的预测效果,为研究区该类储层的油气勘探指明了方向。
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| 关 键 词： | 歧口凹陷 碳酸盐岩储层 裂缝 各向异性 油气勘探 |
| 收稿时间： | 2015-08-16 |
FRACTURE PREDICTION FOR LACUSTRINE CARBONATE RESERVOIR OF THE LOWER PART OF THE 1ST MEMBER OF SHAHEJIE FORMATION ON QIBEI SLOPE,QIKOU SAG |
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| ZHOU Shuhui, FU Lixin, LOU Da, TANG Ge, YANG Bing, WANG Yu. FRACTURE PREDICTION FOR LACUSTRINE CARBONATE RESERVOIR OF THE LOWER PART OF THE 1ST MEMBER OF SHAHEJIE FORMATION ON QIBEI SLOPE,QIKOU SAG[J]. Marine Geology Frontiers, 2016, 32(2): 20-28. doi: 10.16028/j.1009-2722.2016.02004 |
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| Authors: | ZHOU Shuhui FU Lixin LOU Da TANG Ge YANG Bing WANG Yu |
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| Affiliation: | Exploration and Development Research Institute of Dagang Oil Field, CNPC, Tianjin 300280, China |
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| Abstract: | The lacustrine carbonate reservoir in the lower part of the 1st member of Palaeogene Shahejie Formation (Es1x) has been the important oil-gas exploration target in the Dagang oilfield recently. Facts show that the fracture plays an important role in the development and improvement of the reservoir. So it is necessary to effectively predict the fracture system. In this regard,we selected the lacustrine carbonate reservoir of Es1x in the Qibei area as the main study target for fracture prediction in this paper. Firstly,the geological characteristics of the fractures of the Es1x reservoir were analyzed; and then,the distribution of macroscopic fracture development zones were predicted by using multiple fractures prediction technologies based on post-stack seismic data,such as curvature attribute analysis and Landmark structure cube analysis; After that,the extending direction and the density of fractures of the Es1x reservoir were quantitatively predicted by the fractures predicting technologies based on the anisotropy of pre-stack seismic data in the study area; Finally,through the mutual supplement and verification of pre-stack and post-stack results,the fracture system of the Es1x reservoir is concluded as follows:the fractures of the Es1x reservoir dominated by structure fracture,are mainly developed around the north slope of NDG fault; The direction of fracture is nearly extended in east-west direction; The fracture developing zones were discontinuous and distributed block -like or belt-like. The prediction results are matched well with the drilling results and useful for further exploration of oil-gas of same type in the study area. |
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| Keywords: | Qikou Sag carbonate reservoir fracture anisotropy oil-gas exploration |
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