应用陆坡形态-迁移轨迹组合法寻找大型富砂深水扇
- 1. 中海油研究总院, 北京 100028;
- 2. 西安石油大学地球科学与工程学院, 西安 710065;
- 3. 中国石油管道局工程有限公司国际事业部, 河北廊坊 065000
基金项目:
国家科技重大专项（2017ZX05032-002）
作者简介:
陈亮,男,1986年出生,工程师,深水层序地层与沉积、储层预测,E-mail:chenliang29@cnooc.com.cn
- 收稿日期:
2017-03-10
- 修回日期:
2017-04-17
- 刊出日期:
2018-02-10
摘要: 在海外选区研究阶段，盆地勘探程度极低，资料贫乏，导致常规深水沉积分析工作很难开展。而陆坡形态与陆坡迁移轨迹富含丰富的地质信息，可借助二者的组合对深水沉积进行宏观分析。以二维地震资料为基础，应用陆坡形态-迁移轨迹组合法寻找大型富砂深水扇的有利发育区。A盆地发育上升型、平直型、下降型三种陆坡迁移轨迹类型，其中平直-下降型迁移轨迹对应的陆坡进积距离更大，更有利于发育大型深水扇沉积；同时A盆地发育上凸型、下凹型、直线型和坡坪型四种陆坡类型，上凸型与下凹型陆坡的坡度更缓，宽度更大，更有利于重力流的砂泥分异，从而形成富砂深水扇沉积。将同一时期的大型、富砂深水扇的有利分布区相叠合，重叠区域即为该时期大型富砂深水扇的有利发育区，主要位于盆地东部拐角带与盆地西部。同时应用组合法还可建立盆地漂移期的沉积演化模式，分析漂移期沉积演化历史。
Application from Combination of Slope Geometries and Shelf-Edge Trajectories to Find Large-Scale, Sand-Rich Deepwater Fan
- 1. CNOOC Research Institute, Beijing 100028, China;
- 2. School of Earth Sciences and Engineering, Xi'an Shiyou University, Xi'an 710065, China;
- 3. China Petroleum Pipeline Engineering Co., Ltd. International, Langfang, Hebei 065000, China
Funds:
National Science and Technology Major Project, No. 2017ZX05032-002
- Received Date:
2017-03-10
- Rev Recd Date:
2017-04-17
- Publish Date:
2018-02-10
Abstract: In overseas selection stage, extremely low exploration degree and poor data of basin lead to work hard to carry out regular deepwater sedimentary analysis. Slope geometries and shelf-edge trajectories have abundant geological information. In this paper, on the basis of 2D seismic data, apply combination of slope geometries and shelf-edge trajectories to look for favorable distribution of large-scale, sand-rich deepwater fan. A basin develops three types of shelf-edge trajectories, including increasing shelf-edge trajectories, flat shelf-edge trajectories, decreasing shelf-edge trajectories. Progradational distance of linear-decreasing shelf-edge trajectories corresponding slope is longer, more beneficial to develop of large-scale deepwater fan deposits. At the same time, A basin develops four types of slope, including up convex slope, down concave slope, linear slope, and ramp-flat slope. Up convex slope and down concave slope have smaller slope angle and bigger slope width, more beneficial to sand mud differentiation and thus form deepwater fan deposits with better physical property of reservoir. Overlap favorable distribution of deepwater fan with large-scale and good physical property of reservoir during the same period. Overlapping area is the favorable distribution of large-scale, sand-rich deepwater fan, mainly located in the eastern corner and western area in the basin. Also, applying combination method of slope geometries and shelf-edge trajectories can establish sedimentary evolution model of basin during drifting period and analyze history of sedimentary evolution.
陈亮, 于水, 胡孝林, 赵红岩, 陈宇航, 赵千慧. 应用陆坡形态-迁移轨迹组合法寻找大型富砂深水扇[J]. 沉积学报, 2018, 36(1): 92-100. doi: 10.3969/j.issn.1000-0550.2018.011
CHEN Liang, YU Shui, HU XiaoLin, ZHAO HongYan, CHEN YuHang, ZHAO QianHui. Application from Combination of Slope Geometries and Shelf-Edge Trajectories to Find Large-Scale, Sand-Rich Deepwater Fan[J]. Acta Sedimentologica Sinica, 2018, 36(1): 92-100. doi: 10.3969/j.issn.1000-0550.2018.011
| Citation: |
CHEN Liang, YU Shui, HU XiaoLin, ZHAO HongYan, CHEN YuHang, ZHAO QianHui. Application from Combination of Slope Geometries and Shelf-Edge Trajectories to Find Large-Scale, Sand-Rich Deepwater Fan[J]. Acta Sedimentologica Sinica, 2018, 36(1): 92-100. doi: 10.3969/j.issn.1000-0550.2018.011
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