东营凹陷史112区块沙三中亚段深水重力流体系精细刻画及在开发中的意义

doi:10.19657/j.geoscience.1000-8527.2020.02.11

摘要/Abstract

摘要：

深水重力流作为一种重要的、特殊类型的沉积体系,自发现以来就得到了学术界的广泛关注,并在油气勘探中日益受到重视。东营凹陷古近系沙三中段发育深水重力流体系,综合地震、岩心、测录井等资料,对郝家油田史112区块深水重力流体系的沉积类型、特征及在不同层序中的发育演化进行了精细刻画,总结了该区重力流沉积模式,为开发区储层预测提供重要参考。研究表明,本区深水重力流体系发育于三级层序的高位域,从下至上可划分出4个四级层序(SQQ^1-4),主要发育滑塌沉积、碎屑流沉积和浊流沉积3种成因类型,可识别出12种岩相组合。四级层序$\mathrm{SQQ}_{3}^{2}$时期重力流规模较小,$\mathrm{SQQ}_{3}^{3}$时期随着东营三角洲向湖盆中心推进,重力流规模扩大。滑塌沉积主要发育在三角洲前缘或前三角洲斜坡根部,在滑塌沉积前方形成碎屑流沉积,碎屑流向前搬运的过程中,逐渐转化成浊流沉积。三角洲前缘及前三角洲的浊流和碎屑流是开发井区进一步寻找储层的有利部位。

关键词: 深水重力流, 滑塌沉积, 碎屑流沉积, 浊流沉积, 东营凹陷

Abstract:

As an important and special type of sedimentary system, deep-water gravity flow deposits have been widely studied since its discovery, and have been given increasingly more attention in the oil and gas exploration industry. Deep-water gravity flow system is developed in the Middle Member 3 of the Paleogene Shahejie Formation in the Dongying depression. We finely described the types and characteristics of deep-water gravity flow deposits, and the development and evolution in different sequences in the Shi 112 block (Haojia Oilfield), according to the seismic and core logging data. The gravity flow deposition pattern in this area is summarized, which provides an important reference for reservoir prediction in the developed wellblock. This study shows that the local deep-water gravity flow system is developed in the highstand system tract of third-order sequence, which comprises four fourth-order sequences ($\mathrm{SQQ}_{1-4}^{3}$) from bottom to top. The deep-water gravity flow deposits developed three major sedimentary types: slump, debris flow and turbidity current deposits. Furthermore, 12 types of lithofacies are identified. The gravity flow scale was relatively small in the $\mathrm{SQQ}_{3}^{2}$ period, but expanded in the $\mathrm{SQQ}_{3}^{3}$ period with the Dongying delta progressing towards the lake basin center. Slump deposits developed mainly at the deltaic front or the root of pro-delta slope, while sandy debris flow deposits were developed at the front of the slump deposits. Debris flow may have transformed to turbidites gradually during its forward transportation process. The turbidity current and debris flow in the deltaic front and pro-delta represent favorable sites for reservoir exploration in the developed wellblock.

Key words: deep-water gravity flow, slump deposits, debris flow deposits, turbidity current deposits, Dongying depression

中图分类号:

TE121

辛博, 刘景彦, 陈薪凯, 马骁, 仲昭. 东营凹陷史112区块沙三中亚段深水重力流体系精细刻画及在开发中的意义[J]. 现代地质, 2020, 34(02): 321-332.

XIN Bo, LIU Jingyan, CHEN Xinkai, MA Xiao, ZHONG Zhao. Fine Description of Deep-water Gravity Flow Deposits and Its Significance for Hydrocarbon Development in Middle Member 3 of Shahejie Formation in the Shi 112 Wellblock in Dongying Depression[J]. Geoscience, 2020, 34(02): 321-332.

图/表 11

图1 研究区区域地质概况与井位图

Fig.1 Regional geologic map and well distributions in the study area

图2 研究区区域地层概况及S112井综合柱状图

Fig.2 Regional stratigraphic map and comprehensive histogram of well S112 in the study area

图3 研究区古近系沙三中亚段砂岩三角图

Fig.3 Triangulation diagram of sandstone of the Middle Member 3 of Shahejie Formation in the study area

图4 研究区沙三中亚段重力流沉积粒度概率累计曲线及C-M图

Fig.4 Cumulative probability plot of grain size and C-M diagram of gravity flow deposits in the Middle Member 3 of Shahejie Formation in the study area

图5 S112井沙三中亚段滑塌沉积、碎屑流沉积典型构造特征 A.球枕构造,S112井3 148.2 m;B.碟状构造,S112井3 147 m;C.块状砂岩,S112井3 138.7 m

Fig.5 Typical structural characteristics of slump and debris flow deposits of the Middle Member 3 of Shahejie Formation in well S112

图6 S112-12井沙三中亚段滑塌沉积、碎屑流沉积典型构造特征

Fig.6 Typical structural characteristics of slump and debris flow deposits of the Middle Member 3 of Shahejie Formation in well S112-12

图7 S112-12井沙三中亚段浊流沉积典型构造特征

Fig.7 Typical structural characteristics of turbidity current deposits of the Middle Member 3 of Shahejie Formation in well S112-12

图8 122井-S112井沙三中亚段重力流沉积组合类型 Sd.变形构造砂岩相;ASd.变形构造泥质砂岩相;Sm.块状层理砂岩相;Sc.富碎屑砂岩相;ASm.块状层理泥质砂岩相;ASc.富碎屑泥质砂岩相;Sh.平行层理砂岩相;Sg.粒序层理砂岩相;Src.沙纹层理砂岩相;ASr.韵律层理黏土砂岩相;ASh.水平层理黏土砂岩相;M.泥岩相

Fig.8 Gravity flow sedimentary assemblage type of the Middle Member 3 of Shahejie Formation in wells S122 and S112

图9 研究区古近系沙三中亚段重力流沉积平面分布图

Fig.9 Planar distribution of gravity flow deposition in the Middle Member 3 of Shahejie Formation in the study area

图10 沙三中亚段S122-SX23井重力流沉积剖面图

Fig.10 Profile distribution of gravity flow deposition in the Middle Member 3 of Shahejie Formation in well S122-SX23

图11 研究区古近系沙三中亚段深水重力流沉积模式

Fig.11 Depositional model of deep-water gravity flow in the Paleogene Middle Member 3 of Shahejie Formation in the study area

参考文献 38

[1]	KUENEN Ph H, MIGLIORINI C I. Turbidity currents as a cause of graded bedding[J]. Journal of Geology, 1950,58(2):91-127. DOI URL
[2]	李云, 郑荣才, 朱国金, 等. 沉积物重力流研究进展综述[J]. 地球科学进展, 2011,26(2):157-165.
[3]	吴时国, 袁圣强. 世界深水油气勘探进展与我国南海深水油气前景[J]. 天然气地球科学, 2006,17(6):747-752.
[4]	BOUMA A H. Sedimentology of Some Flysch Deposits A Graphic Approach to Facies Interpretation[M]. Amsterdam:Elsevier, 1962: 88-123.
[5]	MUTTI E, RICCIL F. Turbidites of the northern Apennines:introduction to facies analysis[J]. International Geology Review, 1972,20:125-166.
[6]	WALKER R G. Deep-water sandstone facies and ancient submarine fans:models for exploration for stratigraphic traps[J]. AAPG Bulletin, 1978,62:932-966.
[7]	SHANMUGAM G. The Bouma Sequence and the turbidite mind set[J]. Earth Science Reviews, 1997,42:201-229. DOI URL
[8]	MIDDLETON G V, HAMPTON M A. Sediment-gravity flows:Mechanics of flow and deposition[M]//MIDDLETON G V,BOUMA A H. Turbidites and Deep-Water Sedimentation:Short Course Lecture Notes,PartⅠ.Pacific Section of SEPM.Los Angeles:SEPM, 1973: 1-38.
[9]	LOWE D R. Sediment-gravity flows:Their classification,and some problems of applications to natural flows and deposits[M]//DOYIEL J,PILKEY O H. Geology of Continental Slopes.Washington D C:Society of Economic Paleontologists and Mineralogists Special Publication, 1979,27:75-82.
[10]	LOWE D R. Sediment gravity flows II:depositional models with special reference to the deposits of high density turbidity currents[J]. Journal of Sedimentary Petrology, 1982,52:279-297.
[11]	SHANMUGAMG. 50 years of the turbidite paradigm (1950’s-1990’s):deep-water processes and facies models:a critical perspective[J]. Marine and Petroleum Geology, 2000,17:285-342. DOI URL
[12]	邹才能, 赵政璋, 杨华, 等. 陆相湖盆深水砂质碎屑流成因机制与分布特征——以鄂尔多斯盆地为例[J]. 沉积学报, 2009,27(6):1065-1073.
[13]	廖纪佳, 朱筱敏, 邓秀芹, 等. 鄂尔多斯盆地陇东地区延长组重力流沉积特征及其模式[J]. 地学前缘, 2013,20(2):29-39.
[14]	刘芬, 朱筱敏, 李洋, 等. 鄂尔多斯盆地西南部延长组重力流沉积特征及其模式[J]. 石油勘探与开发, 2015,42(5):577-588.
[15]	乔博, 张昌民, 李少华, 等. 珠江口盆地惠州地区新生界珠海组和珠江组重力流沉积特征[J]. 古地理学报, 2013,15(1):69-75. DOI URL
[16]	鲜本忠, 万锦峰, 姜在兴, 等. 断陷湖盆洼陷带重力流沉积特征与模式:以南堡凹陷东部东营组为例[J]. 地学前缘, 2012,19(1):121-135.
[17]	夏景生, 刘晓涵, 王政军, 等. 渤海湾盆地南堡凹陷西部东营组三段-沙河街组一段砂质碎屑流沉积特征及其油气勘探意义[J]. 石油学报, 2017,38(4):399-413.
[18]	鲜本忠, 万锦峰, 董艳蕾, 等. 湖湘深水块状砂岩特征、成因及发育模式:以南堡凹陷东营组为例[J]. 岩石学报, 2013,29(9):3287-3299.
[19]	於奇. 东营凹陷郝家油田沙三中储层特征研究[D]. 大庆: 东北石油大学, 2014.
[20]	王化爱. 东营凹陷中央带西段沙三中亚段浊积岩沉积特征及储层建模研究[D]. 青岛: 中国海洋大学, 2003.
[21]	冯有良, 李思田. 东营凹陷沙河街组三段层序低位域砂体沉积特征[J]. 地质论评, 2001,47(3):278-286.
[22]	王居峰. 济阳坳陷东营凹陷古近系沙河街组沉积相[J]. 古地理学报, 2005,7(1):45-58.
[23]	纪友亮, 张世奇, 张宏, 等. 层序地层学原理及层序成因机制模式[M]. 北京: 地质出版社, 1998: 148-152.
[24]	李阳, 蔡进功, 刘建民. 东营凹陷下第三系高分辨率层序地层研究[J]. 沉积学报, 2002,20(2):210-216.
[25]	袁静, 杜玉民, 李云南. 惠民凹陷古近系碎屑岩主要沉积环境粒度概率累积曲线特征[J]. 石油勘探与开发, 2003,30(3) : 103-107.
[26]	袁静, 杨学君, 路智勇, 等. 东营凹陷盐22 块沙四上亚段砂砾岩粒度概率累积曲线特征[J]. 沉积学报, 2011,29(5):815-824.
[27]	袁珍, 李文厚, 范萌萌, 等. 深水块状砂岩沉积特征及其成因机制探讨:以鄂尔多斯盆地东南缘上三叠统长6油层组为例[J]. 地质科技情报, 2011(4):43-49.
[28]	鄢继华, 陈世悦, 宋国奇, 等. 三角洲前缘滑塌浊积岩形成过程初探[J]. 沉积学报, 2004,22(4):573-578.
[29]	王颖. 大型坳陷湖盆坡折带对沉积和岩性地层圈闭的控制作用[D]. 北京: 中国石油大学(北京), 2005.
[30]	SHANMUGAM G. Ten turbidite myths[J]. Earth Science Reviews, 2002,58:311-341. DOI URL
[31]	李林, 曲永强, 孟庆任, 等. 重力流沉积:理论研究与野外识别[J]. 沉积学报, 2011,29(4):677-688.
[32]	操应长, 张青青, 王艳忠, 等. 东营凹陷沙三中亚段三角洲前缘滑塌型重力流岩相类型及其分布特征[J]. 沉积与特提斯地质, 2017,37(1):9-17.
[33]	杨田, 操应长, 王艳忠, 等. 深水重力流类型、沉积特征及成因机制——以济阳坳陷沙河街组三段中亚段为例[J]. 石油学报, 2015,36(9):1048-1059.
[34]	饶孟余, 钟建华, 郭泽清, 等. 济阳坳陷牛庄洼陷沙三段三角洲前缘浊积岩特征[J]. 高校地质学报, 2004,10(4):624-633.
[35]	夏青松, 田景春. 鄂尔多斯盆地西南部上三叠统长6段湖底扇特征[J]. 古地理学报, 2007,9(1):33-43. DOI URL
[36]	郑荣才, 文华国, 韩永林, 等. 鄂尔多斯盆地白豹地区长6段湖底滑塌浊积扇沉积特征及其研究意义[J]. 成都理工大学学报, 2006,33(6):566-575.
[37]	杨有星, 金振奎. 黄骅坳陷港中地区古近系沙三段湖底沉积相特征[J]. 现代地质, 2012,26(2):355-362.
[38]	李存磊, 任伟伟, 唐明明. 流体性质转换机制在重力流沉积体系分析中应用初探[J]. 地质论评, 2012,58(2):285-296.