Sedimentary model from delta front to deep water area and its significance: a case study of the first sand group of Member 2 of Sangonghe Formation in the Well Pen-1 West sag, Junggar Basin

doi:10.7623/syxb201910007

Acta Petrolei Sinica ›› 2019, Vol. 40 ›› Issue (10): 1223-1232.DOI: 10.7623/syxb201910007

• Petroleum Exploration • Previous Articles Next Articles

Sedimentary model from delta front to deep water area and its significance: a case study of the first sand group of Member 2 of Sangonghe Formation in the Well Pen-1 West sag, Junggar Basin

Hou Gangfu¹, Xu Yang¹, Sun Jing², Wang Libao¹, Song Mingxing², Guo Huajun¹, Li Yazhe¹, Chen Yang¹

1. PetroChina Hangzhou Research Institute of Geology, Zhejiang Hangzhou 310023, China;
2. Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Xinjiang Karamay 834000, China

Received:2018-11-27 Revised:2019-07-08 Online:2019-10-25 Published:2019-11-09

三角洲前缘—湖盆深水区沉积模式及意义——以准噶尔盆地盆1井西凹陷三工河组二段一砂组为例

厚刚福¹, 徐洋¹, 孙靖², 王力宝¹, 宋明星², 郭华军¹, 李亚哲¹, 陈扬¹

1. 中国石油天然气股份有限公司杭州地质研究院浙江杭州 310023;
2. 中国石油新疆油田公司勘探开发研究院新疆克拉玛依 834000

通讯作者: 厚刚福,男,1982年1月生,2005年获吉林大学资源勘查工程专业学士学位,2007年获吉林大学海洋地质专业硕士学位,现为中国石油天然气股份有限公司杭州地质研究院高级工程师,主要从事层序地层和沉积储层研究工作。Email:hougf_hz@petrochina.com.cn
作者简介:厚刚福,男,1982年1月生,2005年获吉林大学资源勘查工程专业学士学位,2007年获吉林大学海洋地质专业硕士学位,现为中国石油天然气股份有限公司杭州地质研究院高级工程师,主要从事层序地层和沉积储层研究工作。Email:hougf_hz@petrochina.com.cn
基金资助:
国家科技重大专项（2017ZX05001-002，2017ZX05001-004）和中国石油天然气股份有限公司科技重大专项（2017E-0401，2019B-0303）资助。

Abstract

Abstract:

To make clear the sedimentary characteristics, sedimentary models, lithologic traps, and exploration fields of lithologic reservoirs from delta front to deep water area of the first sand group of Member 2 of Sangonghe Formation in the Well Pen-1 West sag of Junggar Basin, the palaeogeomorphology was reconstructed by stratum thickness method; the sedimentary microfacies, reservoir properties and hydrocarbon-bearing properties were analyzed according to core observations, heavy mineral analyses, reservoir characterizations and drilling data. The research proposes that the sand bodies of sandy debris flow developed in the deep water area are favorable for lithologic traps. The study area has been divided into three zones by two-stage circular slope breaks, i.e., the inner front delta, the outer front delta and the deep water zone. The underwater distributary channel microfacies of the inner front delta has high reservoir quality and good oil-bearing properties; the channel terminal deposits and sheet sand microfacies of the outer front delta are dominated by tight reservoirs, showing poor oil-bearing properties; in terms of the reservoir quality and oil-bearing properties of the sand bodies of sandy debris flow, the deep water zone is similar with the inner front delta, presenting good top and bottom conditions; further, shielded by tight reservoirs of the outer front delta in the lateral direction, it is conducive to the formation of lithologic traps, and thus is the most favorable oil and gas exploration area in the next step.

Key words: Junggar Basin, Well Pen-1 West sag, Sangonghe Formation, delta front, sandy debris flow, slope break zone, lithologic trap

摘要：

为厘清准噶尔盆地盆1井西凹陷三工河组二段三角洲前缘-湖盆深水区的沉积特征、沉积模式及其岩性圈闭，落实岩性油气藏勘探领域，采用地层厚度法恢复了古地貌，并结合岩心观察、重矿物分析、储层表征和钻井资料，分析了研究区的沉积微相、储层性质和含油气性，认识到湖盆深水区砂质碎屑流砂体的岩性圈闭条件优越。盆1井西凹陷三工河组二段发育两级环状坡折，将研究区分为三角洲内前缘带、三角洲外前缘带和湖盆深水区3个带。三角洲内前缘带水下分流河道微相的储层质量高、含油气性好；三角洲外前缘带发育河道末梢沉积和席状砂微相，为致密储层发育区，含油气性差；湖盆深水区砂质碎屑流砂体的储层性质和含油气性与三角洲内前缘带水下分流河道砂体相类似，且顶底板条件较好，其侧向受三角洲外前缘带致密储层遮挡，有利于形成岩性圈闭，是下一步油气勘探最有利的勘探领域。

关键词: 准噶尔盆地, 盆1井西凹陷, 三工河组, 三角洲前缘, 砂质碎屑流, 坡折带, 岩性圈闭

CLC Number:

TE121.3

Hou Gangfu, Xu Yang, Sun Jing, Wang Libao, Song Mingxing, Guo Huajun, Li Yazhe, Chen Yang. Sedimentary model from delta front to deep water area and its significance: a case study of the first sand group of Member 2 of Sangonghe Formation in the Well Pen-1 West sag, Junggar Basin[J]. Acta Petrolei Sinica, 2019, 40(10): 1223-1232.

厚刚福, 徐洋, 孙靖, 王力宝, 宋明星, 郭华军, 李亚哲, 陈扬. 三角洲前缘—湖盆深水区沉积模式及意义——以准噶尔盆地盆1井西凹陷三工河组二段一砂组为例[J]. 石油学报, 2019, 40(10): 1223-1232.

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Sedimentary model from delta front to deep water area and its significance: a case study of the first sand group of Member 2 of Sangonghe Formation in the Well Pen-1 West sag, Junggar Basin

三角洲前缘—湖盆深水区沉积模式及意义——以准噶尔盆地盆1井西凹陷三工河组二段一砂组为例

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