古地貌恢复技术在滨里海盆地东缘中—下石炭统岩性勘探中的应用

doi:10.3969/j.issn.1672-7703.2022.02.012

摘要/Abstract

摘要： 哈萨克斯坦滨里海盆地东缘中—下石炭统碳酸盐岩（KT-Ⅱ层）不断获得油气发现。随着勘探的深入，面临的难题是碳酸盐岩薄储层预测。从KT-Ⅱ层沉积前的古地貌入手，还原当时碳酸盐岩沉积背景，厘清储层的分布规律。KT-Ⅱ层由下至上可划分为SQ1、SQ2、SQ3三个三级层序,根据高频层序地震精细解释，分别采用地震层位拉平法、地层残余厚度法和印模法，恢复了SQ1—SQ3沉积前的古地貌。SQ1滩体主要围绕SQ1沉积前的坡折带进行沉积，局部沉积厚度较大；SQ2滩体主要分布于低势区与高势区之间的斜坡带，呈连片的趋势，越往高势区储层越发育；SQ3滩体主要沉积于两条走滑断层之间的斜坡带。

关键词: 滨里海盆地, 中—下石炭统, 碳酸盐岩, 古地貌恢复技术, 滩体

Abstract: Oil and gas have continuously been discovered in the Middle-Lower Carboniferous carbonate rocks (KT-Ⅱ layer) in the eastern margin of Pre-Caspian Basin. With the progress of exploration, the prediction of thin carbonate reservoir is facing challenges. By starting from the paleogeomorphology before the deposition of KT-Ⅱ layer, the depositional settings during the deposition of carbonate rocks is restored, and the law of reservoir distribution is identified. The KT-Ⅱ layer is subdivided into three third-order sequences from bottom to top, i.e., SQ1, SQ2, and SQ3. Based on the fine seismic interpretation of high-frequency sequence, the paleogeomorphology before the deposition of each sequence was restored by using the methods of seismic horizon flattening, residual formation thickness and moulage. The beach body of SQ1 was mainly deposited around the slope break zone, with a large thickness in local area; The beach body of SQ2 was mainly distributed in slope zone between the low potential area and the high potential area, with continuous distribution and more developed reservoir towards the high potential area; While the beach body of SQ3 was mainly deposited in slope zone between two strike-slip faults.

中图分类号:

TE111

王燕琨, 王震, 梁爽, 盛善波, 臧真霞. 古地貌恢复技术在滨里海盆地东缘中—下石炭统岩性勘探中的应用[J]. 中国石油勘探, 2022, 27(2): 131-141.

Wang Yankun, Wang Zhen, Liang Shuang, Sheng ShanBo, Zang Zhenxia. Application of paleogeomorphology restoration technology in lithologic reservoir exploration of the Middle-Lower Carboniferous in the eastern margin of Pre-Caspian Basin[J]. China Petroleum Exploration, 2022, 27(2): 131-141.

参考文献

[1] 金树堂. 滨里海盆地东缘晚古生代层序地层与沉积相[M]. 北京：石油工业出版社，2016.
Jin Shutang. Sequence stratigraphy and sedimentary facies of Late Paleozoic in the eastern of Pre-Caspian Basin[M]. Beijing: Petroleum Industry Press, 2016.
[2] 魏国齐，杨威，杜金虎，等. 四川盆地高石梯—磨溪古隆起构造特征对特大型气田的形成的控制作用[J]. 石油勘探与开发，2015,42(3):257-265.
Wei Guoqi, Yang Wei, Du Jinhu, et al. Tectonic features of Gaoshiti-Moti palea-uplift and its controls on the formation of a giant gas field, Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2015,42(3):257-265.
[3] 金民东，谭秀成，童明胜，等．四川盆地高石梯—磨溪地区灯四段岩溶古地貌恢复及地质意义[J]．石油勘探与开发，2017,44(1):58-68.
Jin Mindong, Tan Xiucheng, Tong Mingsheng, et a . Karst paleogeomorphology of the fourth Member of Sinian Dengying Formation in Gaoshiti-Moxi area, Sichuan Basin, SW China: restoration and geological significance[J]. Petroleum Exploration and Development, 2017,44(1):58-68.
[4] 刘洛夫，郭永强，朱毅秀．滨里海盆地盐下层系的碳酸盐岩储集层与油气特征[J]．西安石油大学学报（自然科学版），2007,22(1):53-63.
Liu Luofu, Guo Yongqiang, Zhu Yixiu. Reservoir characteristics and oil-bearing characters of the carbonate reservoir beds in the pre-salt sediments of Pre-Caspian[J]. Journal of Xi’an Shiyou University (Natural Science Edition), 2007,22(1):53-63.
[5] 徐可强. 滨里海盆地东缘中区块油气成藏特征和勘探实践[M]. 北京：石油工业出版社，2011.
Xu Keqiang. Hydrocarbon accumulation characteristics and exploration practice of the middle block in the eastern Pre-Caspian[M]. Beijing: Petroleum Industry Press, 2011.
[6] 钱桂华．哈萨克斯坦滨里海盆地油气地质特征及勘探方向[J]．中国石油勘探，2005,10(5):60-66.
Qian Guihua. Oil-gas geological features and its exploration direction in marginal Caspian Basin, Kazakhstan[J]. China Petroleum Exploration, 2005,10(5):60-66.
[7] 梁爽，王燕琨，金树堂，等. 滨里海盆地构造演化对油气的控制作用[J]. 石油实验地质，2013,35(2):174-178.
Liang Shuang, Wang Yankun, Jin Shutang, et al. Controlling of tectonic evolution on hydrocarbon occurrence in Pre-Caspian Basin[J]. Petroleum Geology & Experiment, 2013,35(2):174-178.
[8] 金之均，王骏，张生根，等．滨里海盆地盐下油气成藏主控因素及勘探方向[J]．石油实验地质，2007,29(2):111-115.
Jin Zhijun, Wang Jun, Zhang Shenggen, et al. Main factors controlling hydrocarbon reservoirs and exploration directions in the pre-salt sequence in Pre-Caspian Basin[J]. Petroleum Geology & Experiment, 2007,29(2):111-115.
[9] 苗钱友，王燕琨，朱筱敏，等．滨里海盆地东缘石炭系层序地层研究[J]．新疆石油地质，2013,34(4):483-487.
Miao Qianyou, Wang Yankun, Zhu Xiaomin, et al. Sequence stratigraphy of carboniferous in eastern Margin of Pre-Caspian Basin[J]. Xinjiang Petroleum Geology, 2013,34(4):483-487.
[10] 赵俊兴，陈洪德，向芳．高分辨率层序地层学方法在沉积前古地貌恢复中的应用[J]．成都理工大学学报（自然科学版），2003,30(1):76-81.
Zhao Junxing, Chen Hongde, Xiang Fang. The apply of rebuilding paleogeomorphology before basin deposition by high-resolution sequence stratigraphy[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2003,30(1):76-81.
[11] 谭绍泉.Wheeler 域储层地震预测技术研究[J]. 地球物理学进展，2013,28(2):846-851.
Tan Shaoquan. Seismical reservoir prediction in Wheeler domain[J]. Progress in Geophysics, 2013,28(2):846-851.
[12] 吴丽艳，陈春强，江春明, 等. 浅谈我国油气勘探中的古地貌恢复技术[J]. 石油天然气学报（江汉石油学院学报），2005,27(4):559-560.
Wu Liyan, Chen Chunqiang, Jiang Chunming, et al. Paleogeomorphic restoring techniques in China’s hydrocarbon exploration[J]. Journal of Oil and Gas Technology (Journal of Jianghan Petroleum Institute), 2005,27(4):559-560.
[13] 冯延状，宋维琪，刘仕友. 利用地震资料进行古地形恢复方法研究及应用[J]. 地层学杂志，2007,31( 增刊2):527-531.
Feng Yanzhuang, Song Weiqi, Liu Shiyou. Research and application of ancient terrain restoration method using seismic data[J]. Journal of Stratigraphy, 2007,31(S2):527-531.
[14] 荆克尧，陈霞，金晓辉．古构造定量恢复的地球物理方法研究及应用[J]．石油实验地质，2021,43(2):354-359.
Jing Keyao, Chen Xia, Jin Xiaohui. Geophysical methods for quantitative resumption of paleo-structures and its supplication[J]. Petroleum Geology & Experiment, 2021,43(2):354-359.
[15] 曹红霞，吴海燕，任星民，等. 鄂尔多斯盆地东南部奥陶系岩溶古地貌与储层分布规律[J]. 中国石油勘探，2020,25(3):146-155.
Cao Hongxia, Wu Haiyan, Ren Xingmin, et al. Karst paleogeomorphology and reservoir distribution pattern of Ordovician in the southeastern Ordos Basin[J]. China Petroleum Exploration, 2020,25(3):146-155.
[16] 朱茂，沈安江，曾洪流，等．古地貌恢复在岩溶风化壳储层研究中的应用[J]．海相油气地质，2018,23(4):87-95.
Zhu Mao, Shen Anjiang, Zeng Hongliu, et al. Application of paleogeomorphology restoration in the study of karst weathering crust reservoir[J]. Marine Origin Petroleum Geology, 2018,23(4):87-95.
[17] 赵永刚，王东旭，冯强汉, 等. 油气田古地貌恢复方法研究进展[J].地球科学与环境学报，2017,39(4):516-529.
Zhao Yonggang, Wang Dongxu, Feng Qianghan, et al. Review on palaeomorphologic reconstruction methods in oil and gas fields[J]. Journal of Earth Sciences and Environment, 2017,39(4):516-529.
[18] 杨威，魏国齐, 谢武仁，等. 古隆起在四川盆地台内碳酸盐岩丘滩体规模成储中的作用[J]．天然气工业，2021,41(4):1-12.
Yang Wei, Wei Guoqi, Xie Wuren, et al. Role of paleouplift in the scale formation of intra-platform carbonate mound-bank body reservoirs in the Sichuan Basin[J]. Natural Gas Industry, 2021,41(4):1-12.
[19] 张君龙，胡明毅，冯子辉, 等．塔里木盆地古城地区寒武系台缘丘滩体类型及与古地貌的关系[J]．石油勘探与开发，2021,48(1):94-106.
Zhang Junlong, Hu Mingyi, Feng Zihui, et al. Types of the Cambrian platform margin mound-shoal complexes and their relationship with paleogeomorphology in Gucheng area, Tarim Basin, NW China[J]. Petroleum Exploration and Development, 2021,48(1):94-106.
[20] 沈安江，张友，冯子辉，等. 塔东古城地区碳酸盐岩储层地质认识与勘探领域[J]. 中国石油勘探，2020,25(3):96-106.
Shen Anjiang, Zhang You, Feng Zihui, et al. Geological understandings and exploration prospects of carbonate reservoirs in Gucheng area, Tadong, Tarim Basin[J]. China Petroleum Exploration, 2020,25(3):96-106.
[21] 刘文栋，钟大康，孙海涛, 等. 川西北中二叠统栖霞组沉积特征及古地貌响应[J]. 沉积学报，2021,39(5):1275-1292.
Liu Wendong, Zhong Dakang, Sun Haitao, et al. Sedimentary characteristics and paleogromorphic responses of the middle Permian Qixia Formation in the northwestern Sichuan Basin[J]. Acta Sedimentologica Sinica, 2021,39(5):1275-1292.
[22] 梁爽，吴亚东，王燕琨，等．滨里海盆地东缘盐下油气成藏特征与主控因素[J]．中国石油勘探，2020,25(4):125-132.
Liang Shuang , Wu Yadong , Wang Yankun , et al. Characteristics and main controlling factors of sub-salt oil and gas accumulation in the eastern margin of Pre-Caspian Basin[J]. China Petroleum Exploration, 2020,25(4):125-132.
[23] 闫海军，何东博，许文壮, 等. 古地貌恢复及对流体分布的控制作用：以鄂尔多斯高桥气藏评价阶段为例[J]. 石油学报，2016,37(12):1483-1495.
Yan Haijun, He Dongbo, Xu Wenzhuang, et al. Paleotopography restoration method and its controlling effect on fluid distribution: a case study of the gas reservoir evaluation stage in Gaoqiao, Ordos Basin[J]. Acta Petrolei Sinica, 2016,37(12):1483-1495.