松辽盆地北部西部斜坡石油成藏特征与勘探实践

蒙启安, 白雪峰, 张文婧, 付丽, 薛涛, 包丽

doi:10.11698/PED.2020.02.03

石油勘探与开发 >

2020 , Vol. 47 >Issue 2: 236 - 246

DOI: https://doi.org/10.11698/PED.2020.02.03

油气勘探

松辽盆地北部西部斜坡石油成藏特征与勘探实践

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中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆 163712

蒙启安（1965-）,男,陕西渭南人,博士,大庆油田有限责任公司勘探开发研究院高级工程师,主要从事石油天然气地质综合研究和科研管理工作。地址：黑龙江省大庆市让胡路区,大庆油田有限责任公司勘探开发研究院,邮政编码：163712。E-mail：mengqian@petrochina.com.cn 联系作者简介：白雪峰（1979-）,男,吉林白城人,硕士,大庆油田有限责任公司勘探开发研究院高级工程师,主要从事油气勘探规划及管理工作。地址：黑龙江省大庆市让胡路区,大庆油田有限责任公司勘探开发研究院,邮政编码：163712。E-mail：bxf@petrochina.com.cn

收稿日期: 2019-08-19

修回日期: 2020-01-10

网络出版日期: 2020-03-21

基金资助

国家科技重大专项"大型岩性油气藏形成主控因素与有利区带评价"（2017ZX05001-002）; 中国石油天然气股份; 有限公司勘探与生产分公司重大课题"中石油矿权区油气资源评价"（135YQZP-2017-KT02）

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Accumulation and exploration of petroleum reservoirs in west slope of northern Songliao Basin, China

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Exploration and Production Research Institute, PetroChina Daqing Oilfield Company, Daqing 163712, China

Received date: 2019-08-19

Revised date: 2020-01-10

Online published: 2020-03-21

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摘要

在松辽盆地北部西部斜坡油气勘探现状及地质研究基础上,从构造、沉积及成藏等多方面入手,重新认识西部斜坡的成藏条件、油气运移、油气聚集等成藏控制因素。研究表明：①西部斜坡为向西超覆的平缓斜坡,邻近生烃凹陷一侧发育鼻状构造,处于油气运移优势指向区,斜坡上发育一系列北东向构造带是油气聚集有利场所;②西部斜坡可进一步分为上斜坡和下斜坡,发育构造、构造-岩性复合及岩性等多种油气藏,上斜坡以萨尔图油层为主,构造控藏,下斜坡多层位含油,多为复合油藏;③断裂、不整合面及连续型砂体是油气运移的主要通道,构造、砂体、断层三位一体控制斜坡带油气富集,微幅度与砂体、小断裂与砂体的匹配关系控制油气成藏。在上述研究基础上,开展复合圈闭精细识别与有效性评价技术攻关,通过断层分类识别、微幅度构造识别、精细沉积研究、波形指示反演岩性圈闭识别等多技术联合识别复合圈闭,然后开展断层与砂体、构造幅度与砂体配置关系分析,综合确定有效圈闭评价标准,优选圈闭,落实目标,提高勘探成功率。图12参32

关键词： 油气藏类型; 成藏特征; 勘探实践; 斜坡; 西部斜坡; 松辽盆地

本文引用格式

蒙启安, 白雪峰, 张文婧, 付丽, 薛涛, 包丽 . 松辽盆地北部西部斜坡石油成藏特征与勘探实践[J]. 石油勘探与开发, 2020 , 47(2) : 236 -246 . DOI: 10.11698/PED.2020.02.03

Abstract

On the basis of the present situation of oil and gas exploration and geological research of the west slope in the northern Songliao Basin, the factors controlling reservoir formation, oil and gas migration and accumulation, have been re-examined from the aspects of structure, deposition and reservoir formation. The results show that: (1) The west slope is a gentle slope overlapping to the west on the oil and gas migration path, where there develop nose structures on the side near the hydrocarbon generation sag and a series of NE structural belts, which are favorable places for oil and gas accumulation. (2) The west slope can be further divided into the upper slope and the lower slope, and there are many kinds of oil and gas reservoirs, including structural, structural-lithologic and lithologic ones. In the upper slope, the major oil layer is Saertu controlled by structure; in the lower slope, multi-layers are oil-bearing, and the oil reservoirs are mostly composite ones. (3) Faults, unconformity surfaces and continuous sand bodies are the main channels of oil and gas migration; structure, sand body and fault jointly control the oil and gas enrichment in the slope; and the matching relationship between micro-amplitude and sand body, small fault and sand body control the oil and gas accumulation. On the basis of the above research, fine identification and effectiveness evaluation technology of composite trap has been developed through extensive study. Combination traps were identified by combining multiple technologies, including fault classification, micro-amplitude structure identification, fine sedimentation research, and lithologic trap identification by waveform indication inversion; and then the relationship between fault and sand body, structural amplitude and sand body configuration were analyzed to set up the evaluation criteria of effective trap. According to the criteria, the traps were selected to enhance the exploration success rate.

Key words： reservoir type; accumulation features; exploration practice; slope; west slope; Songliao Basin

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