东营凹陷胜坨油田一区沙河街组二段1砂组砂体微相研究

doi:10.13745/j.esf.sf.2022.12.55

摘要/Abstract

摘要：

胜坨一区位于胜坨油田西部,是一个在胜北断层控制下所形成的逆牵引背斜构造油田,油气含量丰富。为了研究胜一区沙二段1砂组的砂体微相,主要采用岩心分析、粒度分析、测井相标志、地震相标志等方法。研究表明:沙二段1砂组主要为滨浅湖滩坝沉积,根据岩性、粒度、结构、沉积构造等可划分为坝主体、坝侧缘、滩脊、滩席、滩间洼地5种沉积微相。基于测井曲线变化和岩心相特征,将胜一区沙二1砂组划分为5个准层序。在典型单井相、连井相分析基础上,得出平面相沉积特征和沉积相模式。胜一区沙二上1砂组砂体沉积主要受物源、地貌、风力场和水深综合控制。此次研究有助于油田的后期开发,为实现油田持续稳定发展提供强有力的技术支持,使其更好地服务于生产。

关键词: 滩坝, 坝主体, 风暴, 波浪, 坝侧缘

Abstract:

The Shengyi District is located in the western Shengtuo Oilfield, where rich oil/gas deposits are found in reverse drag anticline traps formed under the control of the Shengbei Fault. In this study, sedimentary microfacies of the 1st sand group, 2nd member, Shahejie Formation (or ‘Sha’er 1 sand formation’, for short), Shengyi District, was investigated through core analysis, grain size analysis, and sedimentary facies analysis. The sand formation is mainly made up of shallow lake beach-bar deposits, with five sedimentary microfacies: main bar; bar edge; beach ridge; beach sheet; and inter-beach depression. Facies characteristics and depositional environments of the Sha’er 1 sand formation, revealed by facies analysis on typical cores from single and continuous wells, show that the deposition of the sand formation is mainly controlled by provenance, landform, wind field, and water depth. This research can provide strong technical support for sustainable and stable oil field development in the later stage.

Key words: beach bar, main bar, storm, wave, bar edge

中图分类号:

P624
TE343

崔文富, 沈志晗, 姜在兴, 贺丽容, 王成, 张家志, 刘桐. 东营凹陷胜坨油田一区沙河街组二段1砂组砂体微相研究[J]. 地学前缘, 2023, 30(3): 452-464.

CUI Wenfu, SHEN Zhihan, JIANG Zaixing, HE Lirong, WANG Cheng, ZHANG Jiazhi, LIU Tong. Microfacies analysis of sand formation in Shengyi District, Shengtuo Oilfield, Dongying Sag[J]. Earth Science Frontiers, 2023, 30(3): 452-464.

图/表 17

图1 胜坨油田一区构造位置简图 A1—ST1-2-59井-ST1-2-153井剖面位置;A2—ST1-0-88井-ST1-5-9井剖面位置;B1—地震剖面位置(x=1 231);B2—地震剖面位置(x=1 281)

Fig.1 Sketch map of the structural location of the first block of Shengtuo Oilfield

表1 滩坝微相分类方案对比

Table 1 Comparison of different classification schemes for beach-bar microfacies

分类方案	滩坝微相分类
曾发富等^[6]	滩主体、滩边缘、滩间、坝主体、坝侧缘、坝间
蒋解梅等^[7]	滩坝主体、滩坝后缘、滩坝前缘、坝后湖湾、滨湖沉积
操应长等^[8]、王永诗等^[9]	坝主体、坝侧缘、滩脊、滩席、滩间湾
本文划分	坝主体、坝侧缘、滩脊、滩席、滩间洼地

图2 胜一区沙二1砂组ST1-3-XJ142井岩心垂向描述

Fig.2 Vertical description of cores from Well ST1-3-XJ142, Sha’er 1 sand formation, Shengyi District

图3 胜一区沙二1砂组坝主体微相沉积特征 a—ST1-3-XJ142井,1 990.90 m块状中-粗砂岩(富含油);b—ST1-3-XJ142井,1 992.90 m含砾砂岩、泥砾呈叠瓦状排列;c—ST1-3-XJ142井,1 993.35 m,下部灰色泥岩,代表湖泛面;中部砾岩磨圆好、纯净,反映再沉积;d—ST1-3-XJ142井,2 001.85m灰绿色粗砂岩-砾岩、磨圆较好,平行层理。

Fig.3 Drill cores from different wells showing sedimentary microfacies of the main bar

图4 胜一区沙二1砂组坝侧缘微相沉积特征 a—ST1-3-XJ142井,1 997.95 m交错层理;b—ST1-3-XJ142井,1 989.20 m洼状交错层理、丘状交错层理;c—ST1-3-XJ142井,1 989.55 m生物扰动、潜穴;d—ST1-3-XJ142井,1 990.02 m丘状交错层理; e—ST1-3-XJ142井,1 997.38 m搅混构造; f—ST1-3-XJ142井,1 998.25 m,交错层理、生物潜穴。

Fig.4 Drill cores from different wells showing sedimentary microfacies of bar edge

图5 胜一区沙二1砂组滩砂沉积特征 a—ST1-3-XJ142井,1 988.30 m生物逃逸迹;b—ST1-3-XJ142井,1 988.75 m低角度的交错层理;c—ST1-3-XJ142井,2 002.45 m生物扰动、潜穴。

Fig.5 Sedimentary characteristics of beach sands

图6 胜一区沙二1砂组滩间洼地沉积特征 a—ST1-3-XJ142井,1 993.45 m灰绿色、红色泥岩,代表湖泛面;b—ST1-3-XJ142井,1 994.70 m 红色、黄绿色泥岩,代表滨湖岸厚层泥岩。

Fig.6 Drill core showing characteristics of inter-beach depression in the sand formation

图7 ST1-3-XJ142井岩心样品粒度分布 a—ST1-3XJ142井,1 991.15 m 坝主体粒度概率累计曲线;b—ST1-3XJ142井,1 998.28 m坝侧缘粒度概率累计曲线。

Fig.7 Particle size distribution in core sample from well ST1-3-XJ142

图8 滩坝沉积测井曲线特征

Fig.8 General features of logging curves for beach/bar sediments

图9 胜一区沙二段1砂组滩坝沉积微相类型测井相特征

Fig.9 Logging facies characteristics of beach-bar sedimentary microfacies types

图10 胜一区沙二1砂组坝砂沉积特征(x=1 231)

Fig.10 Seismic reflection profile showing sedimentary characteristics of bar sands (x=1231)

图11 胜一区沙二1砂组坝砂沉积特征(x=1 281)

Fig.11 Seismic reflection profile showing sedimentary characteristics of bar sands (x=1281)

图12 ST1-3-XJ142井准层序划分

Fig.12 Parasequence division of Well ST1-3-XJ142

图13 ST1-2-59 -ST1-2-153井连井剖面沉积相图

Fig.13 Profile of sedimentary facies (Wells ST1-2-59 to ST1-2-153)

图14 ST1-0-88-ST1-5-9井连井剖面沉积相图

Fig.14 Profile of sedimentary facies (Wells ST1-0-88 to ST1-5-9)

图15 胜一区沙二1砂组准层序1-5沉积微相平面展布图

Fig.15 Planar distribution of sedimentary microfacies in parasequences 1-5 of the sand formation

图16 胜一区沙二1砂组沉积模式图

Fig.16 Depositional environments for the Sha’er 1 sand formation, Shengyi District

参考文献 21

[1]	曹翠. 胜坨油田一区沙二段储层夹层定量表征[D]. 东营: 中国石油大学, 2010.
[2]	牟汉生, 孙钰, 姜在兴. 胜坨地区沙二段辫状河三角洲沉积特征[J]. 特种油气藏, 2007, 14(3): 24-27, 105.
[3]	黄雅睿, 杨剑萍. 东营凹陷北部胜坨一区沙二段1-3砂组沉积相类型及演化特征研究[C]// 第十五届全国古地理学及沉积学学术会议摘要集. 成都, 2018: 113.
[4]	马文婷. 东营凹陷胜坨一区沙二段上部沉积微相及储层特征研究[D]. 东营: 中国石油大学(华东), 2018.
[5]	孙焕泉, 曹绪龙, 李宗阳, 等. 基于储层孔喉匹配的非均相复合驱技术研究与矿场实践: 以胜坨油田一区沙二段1-3砂组聚合物驱后单元为例[J]. 油气地质与采收率, 2020, 27(5): 53-61.
[6]	曾发富, 董春梅, 宋浩生, 等. 滩坝相低渗透油藏储层非均质性与剩余油分布[J]. 中国石油大学学报(自然科学版), 1998, 22(6): 39-42, 54.
[7]	蒋解梅, 王新征, 李继山, 等. 东营凹陷沙四段滩坝砂微相划分与砂体横向预测: 以王家岗油田王73井区为例[J]. 石油地质与工程, 2007, 21(4): 12-15, 9.
[8]	操应长, 王健, 刘惠民, 等. 东营凹陷南坡沙四上亚段滩坝砂体的沉积特征及模式[J]. 中国石油大学学报(自然科学版), 2009, 33(6): 5-10.
[9]	王永诗, 刘惠民, 高永进, 等. 断陷湖盆滩坝砂体成因与成藏: 以东营凹陷沙四上亚段为例[J]. 地学前缘, 2012, 19(1): 100-107.
[10]	姜在兴. 沉积体系及层序地层学研究现状及发展趋势[J]. 石油与天然气地质, 2010, 31(5): 535-541, 514.
[11]	JIANG Z X. Sedimentary dynamics of windfield-source-basin system: new concept for interpretation and prediction[M]. Singapore: Springer, 2018.
[12]	曹广华, 胡亚华, 张奇文, 等. 利用测井资料识别沉积微相方法研究[J]. 科学技术与工程, 2007, 7(15): 3674-3680.
[13]	于民凤, 程日辉, 那晓红. 陆相盆地主要沉积微相的测井特征[J]. 世界地质, 2005, 24(2): 182-187.
[14]	胡望水, 陈川, 陈岑, 等. 梨树断陷西丁家地区营城组地震相特征[J]. 重庆科技学院学报(自然科学版), 2012, 14(3): 1-4.
[15]	CATUNEANU O, ABREU V, BHATTACHARYA J P, et al. Towards the standardization of sequence stratigraphy[J]. Earth-Science Reviews, 2009, 92(1/2): 1-33. DOI URL
[16]	徐强, 姜烨, 董伟良, 等. 中国层序地层研究现状和发展方向[J]. 沉积学报, 2003, 21(1): 155-167.
[17]	姜在兴. 层序地层学研究进展: 国际层序地层学研讨会综述[J]. 地学前缘, 2012, 19(1): 1-9.
[18]	张明军, 陈世悦, 鄢继华, 等. 车镇凹陷沙二上—东营组高分辨率层序地层学分析[J]. 西部探矿工程, 2006, 18(4): 122-124.
[19]	姜在兴, 王俊辉, 张元福, 等. “风-源-盆”三元耦合油气储集体预测方法及其应用: 对非主力物源区储集体的解释与预测[J]. 石油学报, 2020, 41(12): 1465-1476. DOI
[20]	姜在兴, 王雯雯, 王俊辉, 等. 风动力场对沉积体系的作用[J]. 沉积学报, 2017, 35(5): 863-876.
[21]	孙其琛, 杨俊生. 东营凹陷胜坨地区沙二上亚段古物源输送路径研究[J]. 地质与资源, 2019, 28(1): 43-48.