车镇凹陷沙二段滩坝砂体沉积特征及控制因素

doi:10.12108/yxyqc.20180206

岩性油气藏 ›› 2018, Vol. 30 ›› Issue (2): 50–57.doi: 10.12108/yxyqc.20180206

车镇凹陷沙二段滩坝砂体沉积特征及控制因素

时瑞坤¹, 高秋菊¹, 韩小锋², 巴素玉¹, 师涛¹, 韩敏³

1. 中国石化胜利油田分公司物探研究院, 山东东营 257022;
2. 中国地质调查局西安地质调查中心, 西安 710054;
3. 中国石化胜利油田分公司勘探开发研究院, 山东东营 257000

收稿日期:2017-11-03 修回日期:2018-01-15 出版日期:2018-03-21 发布日期:2018-03-21
第一作者:时瑞坤(1985-),男,硕士,工程师,主要从事油气勘探综合研究工作。地址:(257022)山东省东营市东营区北一路210号物探研究院。Email:280590708@qq.com。
基金资助:
国家重大科技专项“大型油气田及煤层气开发”子课题“致密油藏储层地震预测方法及地应力研究”（编号：2017ZX05072001）、国家重点基础研究发展计划（973计划）项目“陆相页岩油富集要素与有利区预测”（编号：2014CB239104）和中国石化油气勘探开发领域重大项目“济阳坳陷油气聚集规律及精细评价关键技术”子课题“复杂隐蔽油气藏地震勘探关键技术研究”（编号：ZDP17008）联合资助

Sedimentary characteristics and controlling factors of beach-bar sandbodies of the second member of Shahejie Formation in Chezhen Sag

SHI Ruikun¹, GAO Qiuju¹, HAN Xiaofeng², BA Suyu¹, SHI Tao¹, HAN Min³

1. Geophysical Research Institute, Shengli Oilfield Company, Sinopec, Dongying 257022, Shandong, China;
2. Xi'an center of Geological Survey, CGS, Xi'an 710054, China;
3. Research Institute of Petroleum Exploration and Development, Shengli Oilfield Company, Sinopec, Dongying 257000, Shandong, China

Received:2017-11-03 Revised:2018-01-15 Online:2018-03-21 Published:2018-03-21

摘要/Abstract

摘要： 车镇凹陷沙二段沉积时期发育了一定规模的滩坝砂体，对于其沉积迁移规律等的认识不够深入，制约了滩坝砂油藏的精细勘探开发进程。为了进一步明确研究区滩坝砂体的沉积迁移规律，在充分利用岩心、录井、测井及相关测试资料的基础上，系统研究了滩坝砂体的沉积特征及控制因素。结果表明：车镇凹陷沙二段滩坝砂体以岩屑长石砂岩为主，粒度概率曲线以反映波浪作用的跳跃加悬浮式和两段跳跃加悬浮式为主；滩坝砂体沉积构造类型多样，主要发育反映波浪作用的浪成沙纹交错层理和沙纹交错层理、反映强水动力作用的平行层理，以及反映生物作用的生物钻孔和生物扰动构造；滩坝砂体主要为原地改造型，垂向上主要发育反粒序特征明显的坝砂和相序不明显的滩砂，局部地区发育由于波浪作用改造不彻底而形成的正粒序或复合相序；断层活动控制了滩坝砂体的沉积迁移规律，波浪作用控制了原地改造型滩坝的发育，物源供给控制了滩坝砂体的发育规模；整体上，车镇凹陷沙二段滩坝砂体具有“漫湖”沉积特征，成分成熟度和结构成熟度均中等偏低。研究结果可为车镇凹陷沙二段滩坝砂油藏的进一步勘探开发提供参考。

Abstract: A certain scale of beach-bar sandbodies were developed during the sedimentary stage of the second member of Shahejie Formation in Chezhen Sag. The understanding of the law of sedimentation and migration of beach-bar sandbodies is not yet deep enough, which restricts the process of fine exploration and development of beach-bar sandbody reservoirs. In order to further clarify the law of sedimentation and migration of beach-bar sandbodies, the sedimentary characteristics and controlling factors of the beach-bar sandbodies were studied by integrating the data of core, drilling, logging and relevant test data. The results show that the beach-bar sandbodies were dominated by debris-feldspar sandstones, the grain size probability curves mainly include patterns of "1 skip + 1 suspension" and "2 skip + 1 suspension" representing wave deposition. Several types of sedimentary structures were developed in beach-bar sandbodies, mainly including wave-ripple cross-bedding and ripple crossbedding with wave influence, horizontal bedding reflecting strong hydrodynamic force, burrow pores and bioturbation structures indicating biological effect. The beach-bar sandbodies were reconstructed in-situ, which mainly developed bar facies with obvious inverted sequence, beach facies with indistinct inverted sequence and beachbar facies with positive sequence and composite sequence vertically due to the role of wave transforming incompletely in partial area. The fault activities controlled the deposits and migrations of the beach-bar sandbodies, wave actions controlled the development of the in-situ reconstructed beach-bar sandbodies, and the supplies of material sources controled the development scales of the beach bar sandbodies. The beach-bar sandbodies were entirely distributed in overall basin with characteristics of over-lake deposition with meidium-low compositional and structural maturity during the sedimentation of the second member of Shahejie Formation in Chezhen Sag. The results can provide a reference for the further exploration and development of beach-bar sandbody reservoirs of the second member of Shahejie Formation in Chezhen Sag.

中图分类号:

TE121.3

时瑞坤, 高秋菊, 韩小锋, 巴素玉, 师涛, 韩敏. 车镇凹陷沙二段滩坝砂体沉积特征及控制因素[J]. 岩性油气藏, 2018, 30(2): 50–57.

SHI Ruikun, GAO Qiuju, HAN Xiaofeng, BA Suyu, SHI Tao, HAN Min. Sedimentary characteristics and controlling factors of beach-bar sandbodies of the second member of Shahejie Formation in Chezhen Sag[J]. Lithologic Reservoirs, 2018, 30(2): 50–57.

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车镇凹陷沙二段滩坝砂体沉积特征及控制因素

Sedimentary characteristics and controlling factors of beach-bar sandbodies of the second member of Shahejie Formation in Chezhen Sag

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