饶阳凹陷蠡县斜坡出岸潜山内幕勘探潜力探讨  

Discussion on exploration potential inside Chu′an buried hill of Lixian slope,Raoyang sag

作　　者：张成武 李冬蕾 侯玉花 李娟 张豫东 邓清 ZHANG Chengwu;LI Donglei;HOU Yuhua;LI Juan;ZHANG Yudong;DENG Qing(No.2 Mud Logging Company,BHDC,CNPC,Renqiu,Hebei 062552,China)

机构地区：[1]中国石油渤海钻探第二录井公司

出　　处：《录井工程》2022年第3期132-140,共9页Mud Logging Engineering

摘　　要：随着冀中坳陷潜山勘探的深入,中浅层大型潜山基本钻探殆尽,隐蔽型潜山油气藏已经成为勘探开发的主要目标。饶阳凹陷蠡县斜坡北部出岸潜山属于隐蔽型中深层内幕潜山,该内幕潜山的特点是以雾六段作盖/隔层,然而位于其东部的任丘潜山钻探的RS 2井以雾六段作隔层失利,为此针对该区雾六段的盖层封堵性的有效性及成藏条件因素进一步开展分析研究。从饶阳凹陷潜山内幕的勘探实践出发,综合利用出岸、任丘、雁翎潜山钻井、地质、分析化验、测井及相应的地震资料,分析出岸潜山地层区域分布、构造演化及沉积厚度特征,通过已钻井层位的引层追踪、辨别落实研究区域相应层位的地震特征等方法落实雾六段层位的准确性;从岩性-电性-物性、隔层厚度和分布特征综合评价出岸潜山雾六段隔层封盖有效性,并进一步研究其成藏的油源条件。结果表明,出岸潜山内幕雾六段具有较好封堵性且油源条件优越,具有较大的勘探潜力,是今后潜山内幕油气藏勘探的有利方向,为油气田的勘探开发提供了有利依据。With the deepening of buried hill exploration in Jizhong Depression, the drilling of medium-shallow large-scale buried hills has been basically completed, and the subtle buried hill reservoirs have become the main target of exploration and development. Chu′an buried hill in the north of Lixian slope in Raoyang sag belongs to the subtle medium-deep inner buried hill. The characteristic of this inner buried hill is to use Wu-6 Member as caprock/interlayer. However, well RS 2 drilled in Renqiu buried hill in the east failed to use Wu-6 Member as the interlayer. Therefore, the effectiveness of caprock sealing and the factors of hydrocarbon accumulation conditions for Wu-6 Member in this area are further analyzed and studied. Starting from the exploration inside the buried hill of Raoyang sag, the strata areal distribution, structural evolution and sedimentary thickness characteristics of Chu′an buried hill are analyzed by comprehensively utilizing the drilling, geology, assay, logging and corresponding seismic data of Chu′an, Renqiu and Yanling buried hills. The horizon accuracy of Wu-6 Formation is confirmed by tracing the drilled horizons and identifying the seismic characteristics of the corresponding horizons in the study area. The sealing gland effectiveness of Wu-6 Formation interlayers in Chu′an buried hill was comprehensively evaluated from the lithology-electrical property-physical property, and thickness and distribution characteristics of the interlayers, and the oil source conditions of its accumulation were further studied. The results show that Wu-6 Formation inside Chu′an buried hill has preferable sealing ability, superior oil source conditions, and great exploration potential. It is a favorable direction for the future hydrocarbon reservoir exploration inside the buried hill, and provides a favorable basis for the exploration and development of oil and gas fields.

关 键 词：隐蔽型潜山 出岸潜山 雾六段 封堵有效性 勘探潜力 

分 类 号：TE132.1[石油与天然气工程—油气勘探]