塔北新和地区下白垩统舒善河组薄砂体沉积相特征及沉积模式

doi:10.12108/yxyqc.20230111

岩性油气藏 ›› 2023, Vol. 35 ›› Issue (1): 120–131.doi: 10.12108/yxyqc.20230111

塔北新和地区下白垩统舒善河组薄砂体沉积相特征及沉积模式

何春丰¹, 张翔^1,2, 田景春^1,2, 夏永涛³, 杨燕茹¹, 陈杰¹, 王鑫宇¹

1. 成都理工大学沉积地质研究院, 成都 610059;
2. 成都理工大学油气藏地质及开发工程国家重点实验室, 成都 610059;
3. 中国石化西北油田分公司勘探开发研究院, 乌鲁木齐 830011

收稿日期:2022-05-27 修回日期:2022-07-21 出版日期:2023-01-01 发布日期:2023-01-06
第一作者:何春丰(1993-),男,成都理工大学在读硕士研究生,研究方向为沉积学。地址:(610059)四川省成都市成华区二仙桥东三路1号成都理工大学。Email:1820728785@qq.com
通信作者: 张翔(1978-),男,博士,副教授,主要从事沉积学、沉积地球化学等方面的教学与科研工作。Email:zhangxiang06@cdut.edu.cn。
基金资助:
中国石油化工股份有限公司科技开发项目“新和-三道桥地区白垩-古近系岩性圈闭潜力评价及区带优选研究”(编号: ky2019-s-074)资助

Sedimentary facies characteristics and sedimentary model of thin sand bodies of Lower Cretaceous Shushanhe Formation in Xinhe area, northern Tarim Basin

HE Chunfeng¹, ZHANG Xiang^1,2, TIAN Jingchun^1,2, XIA Yongtao³, YANG Yanru¹, CHEN Jie¹, WANG Xinyu¹

1. School of Sedimentary Geology, Chengdu University of Technology, Chengdu 610059, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China;
3. Research Institute of Exploration and Development, Northwest Oilfield Company, Sinopec, Urumqi 830011, China

Received:2022-05-27 Revised:2022-07-21 Online:2023-01-01 Published:2023-01-06

摘要/Abstract

摘要： 塔北新和地区下白垩统舒善河组是塔里木盆地北部岩性油气藏勘探的潜在领域之一。通过23口钻井资料和全覆盖三维地震资料解释成果，开展了塔北新和地区下白垩统舒善河组的地层划分，详细研究了舒善河组沉积微相特征及平面分布，并建立了薄砂体的沉积模式。研究结果表明:①塔北新和地区舒善河组与上覆巴西改组呈整合接触，超覆于沙雅隆起剥蚀基底之上，可划分为舒1段、舒2段和舒3段。②研究区舒善河组岩石类型主要为岩屑长石砂岩，其次为长石岩屑砂岩、长石砂岩，可识别出滨浅湖泥和滨浅湖砂坝微相。③研究区舒善河组沉积前发育“隆起、低隆起和洼地”三级古地貌，控制了沉积相的展布。舒1段沉积期沉积范围局限于洼地区，舒2段沉积期地层由洼地区向东西两侧超覆，沉积面积扩大，舒1段-舒2段沉积期由东、西两侧向中部呈滨湖-浅湖的相带展布特征；舒3段沉积期，研究区进一步湖侵为浅湖沉积。④研究区舒善河组薄砂体是重要的勘探领域，其分布受控于沉积前古地貌、湖平面变化和古水深。

关键词: 古地貌, 滨浅湖泥, 滨浅湖砂坝, 薄砂体, 舒善河组, 下白垩统, 新和地区, 塔北

Abstract: The Lower Cretaceous Shushanhe Formation in Xinhe area is one of the potential fields of lithologic reservoir exploration in northern Tarim Basin. Based on the drilling data from 15 wells and 3D seismic interpretation results，the stratigraphic division of Lower Cretaceous Shushanhe Formation in Xinhe area of northern Tarim Basin was carried out，the sedimentary microfacies characteristics and plane distribution of Shushanhe Formation were studied，and the sedimentary model of thin sand bodies was established. The results show that: (1) Shushanhe Formation in Xinhe area is in conformity contact with the overlying Baxigai Formation and overlying the denuded basement of Shaya uplift，and can be divided into Shu 1 member，Shu 2 member and Shu 3 member. (2) The rock of Shushanhe Formation in the study area is mainly lithic arkose，followed by feldspathic lithic sandstone and arkose. The microfacies of shore shallow lake mud and shore shallow lake sand bar can be identified. (3) Before the deposition of Shushanhe Formation in the study area，three-level paleogeomorphology of uplift， low uplift and depression developed，which controlled the distribution of sedimentary facies. During the sedimentary period of Shu 1 member，the sedimentary range is limited to the depression area. The strata of Shu 2 member overlapped from the depression area to the east and west sides，and the sedimentary area expanded. The sedimentary period of Shu 1 and Shu 2 members presents the distribution characteristics of shore-shallow lake facies belt from the east and west sides to the middle. During the sedimentary period of Shu 3 member，the study area was further transgressive into shallow lake sediments. (4) The thin sand bodies of Shushanhe Formation in the study area are important exploration fields，and their distribution is controlled by paleogeomorphology，lake level change and paleowater depth before sedimentation.

Key words: paleogeomorphology, shore-shallow lake mud, shore-shallow lake sand bar, thin sand body, Shushanhe Formation, Lower Cretaceous, Xinhe area, northern Tarim Basin

中图分类号:

TE122.2

何春丰, 张翔, 田景春, 夏永涛, 杨燕茹, 陈杰, 王鑫宇. 塔北新和地区下白垩统舒善河组薄砂体沉积相特征及沉积模式[J]. 岩性油气藏, 2023, 35(1): 120–131.

HE Chunfeng, ZHANG Xiang, TIAN Jingchun, XIA Yongtao, YANG Yanru, CHEN Jie, WANG Xinyu. Sedimentary facies characteristics and sedimentary model of thin sand bodies of Lower Cretaceous Shushanhe Formation in Xinhe area, northern Tarim Basin[J]. Lithologic Reservoirs, 2023, 35(1): 120–131.

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塔北新和地区下白垩统舒善河组薄砂体沉积相特征及沉积模式

Sedimentary facies characteristics and sedimentary model of thin sand bodies of Lower Cretaceous Shushanhe Formation in Xinhe area, northern Tarim Basin

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