渤海湾盆地西南部古近系滩坝沉积特征及主控因素

doi:10.12108/yxyqc.20210308

岩性油气藏 ›› 2021, Vol. 33 ›› Issue (3): 85–94.doi: 10.12108/yxyqc.20210308

渤海湾盆地西南部古近系滩坝沉积特征及主控因素

张汶, 吕世聪, 赵大林, 贾海松, 蔡越钎

中海石油 (中国) 有限公司天津分公司渤海石油研究院, 天津 300459

收稿日期:2020-05-18 修回日期:2020-08-05 发布日期:2021-06-03
第一作者:张汶（1983—），男，硕士，高级工程师，主要从事石油地质方面的研究工作。地址：（300459）天津市滨海新区海川路2121号。Email：zhangwen7@cnooc.com.cn。
基金资助:
“十三五”国家科技重大专项“渤海油田高效开发示范工程”（编号：2016ZX05058）资助

Sedimentary characteristics and main controlling factors of Paleogene beach bar in southwestern Bohai Bay Basin

ZHANG Wen, LYU Shicong, ZHAO Dalin, JIA Haisong, CAI Yueqian

Bohai Petroleum Research Institute of Tianjin Branch of CNOOC Limited, Tianjin 300459, China

Received:2020-05-18 Revised:2020-08-05 Published:2021-06-03

摘要/Abstract

摘要： 为研究渤海湾盆地西南部古近系东营组和沙河街组滩坝沉积特征及主控因素，开展了岩心观察、薄片鉴定、测井分析、压汞测试等研究，并结合古地貌特征对各类滩坝沉积模式及其差异性进行了综合分析。结果表明：①研究区滩坝类型主要包括砂质滩坝、砾质滩坝、混积滩坝和碳酸盐岩滩坝等4种类型。②物源供给强度、古地貌、古水深及古风浪等4个因素共同控制了滩坝的类型及沉积特征，其中物源供给强度是物质基础，控制了滩坝砂体类型，古地貌与古水深控制了滩坝砂体的厚度和分布位置，古风浪影响了滩坝砂体的展布形态。③砂质滩坝、混积滩坝和碳酸盐岩滩坝储层物性较好，测试产能高，为研究区油气勘探的有利目标。该研究成果可为滩坝储层的油气勘探提供借鉴作用。

关键词: 物源供给, 古地貌, 古水深, 古风浪, 滩坝, 古近系, 渤海湾盆地

Abstract: In order to study the sedimentary characteristics and main controlling factors of Paleogene Dongying Formation and Shahejie Formation in southwestern Bohai Bay Basin，core observation，thin section identification，well logging analysis and mercury injection test were carried out，and combined with the characteristics of paleogeomorphology，sedimentary models of beach bar and their differences were comprehensively analyzed. The results show that：（1）There are four types of beach bar，including sandy beach bar，gravel beach bar， mixed beach bar and carbonate beach bar.（2）The source supply intensity，paleogeomorphology，paleowater depth and paleowind wave jointly control the type and sedimentary characteristics of beach bar. The source supply intensity is the material basis and controls the type of beach bar sand body. The paleogeomorphology and paleowater depth control the thickness and distribution position of beach bar sand body，and paleowind wave affects the distribution form of beach bar sand body.（3）Sandy beach bar，mixed beach bar and carbonate beach bar have good physical properties and high test productivity，which are favorable targets for oil and gas exploration in the study area. The research results can provide reference for oil and gas exploration of beach bar reservoir.

Key words: source supply, paleogeomorphology, paleowater depth, paleowind wave, beach bar, Paleogene, Bohai Bay Basin

中图分类号:

TE122.1

张汶, 吕世聪, 赵大林, 贾海松, 蔡越钎. 渤海湾盆地西南部古近系滩坝沉积特征及主控因素[J]. 岩性油气藏, 2021, 33(3): 85–94.

ZHANG Wen, LYU Shicong, ZHAO Dalin, JIA Haisong, CAI Yueqian. Sedimentary characteristics and main controlling factors of Paleogene beach bar in southwestern Bohai Bay Basin[J]. Lithologic Reservoirs, 2021, 33(3): 85–94.

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渤海湾盆地西南部古近系滩坝沉积特征及主控因素

Sedimentary characteristics and main controlling factors of Paleogene beach bar in southwestern Bohai Bay Basin

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