首页|番禺油田群稠油油藏储集层构型特征及剩余油挖潜

番禺油田群稠油油藏储集层构型特征及剩余油挖潜

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针对番禺油田群稠油油藏采出程度低、隔夹层发育、剩余油预测难等问题,亟需提高储集层构型解剖和预测精度.利用地质、地震和测井资料,采用自然伽马回返率和大数据统计技术,识别储集层3级、4级和5级构型界面,研究各级次夹层的分布模式,定量表征储集层构型单元砂体内部结构以及夹层的展布形态,分析剩余油赋存模式及其主控因素,厘清构型界面对剩余油的控制作用.研究结果表明:储集层中发育的3级斜交型前积夹层能延缓流体垂向渗流,4级叠置型水平夹层能阻止流体垂向窜流;剩余油运移能量和方向主要受3级夹层、4级夹层及韵律差异控制.利用低产低效井侧钻10口调整井,初期总产量为680.00 m3/d,侧钻后日产油量为侧钻前的5倍.
Architectures of and Remaining Oil Potential Tapping in Heavy Oil Reservoirs of Panyu Oilfield Group
Due to the low oil recovery percent of reserves,developed barriers/interlayers,and difficult remaining oil prediction in the heavy oil reservoirs in the Panyu oilfield group,it is urgent to improve the accuracy of reservoir architecture analysis and prediction.Based on geo-logical,seismic and logging data,together with GR return rate and big data statistical technologies,the 3rd-,4th-,and 5th-order architec-ture boundaries in the reservoirs were identified,the distribution patterns of interlayers were studied,the internal structure of reservoir ar-chitecture units and the distribution of interlayers were quantitatively characterized,the main controlling factors and occurrence patterns of the remaining oil were analyzed,and the control of architecture boundary on remaining oil was clarified.The results show that the 3rd-order oblique progradational interlayers in the reservoirs can slow down vertical fluid flow,and the 4th-order superimposed horizontal interlayers can prevent vertical fluid channeling.The energy and direction of remaining oil migration are mainly constrained by the 3rd-and 4th-order interlayers and the rhythm differences.Ten ineffective and inefficient wells were sidetracked,which revealed an initial cumulative oil pro-duction of 680.00 m3/d,five times that before sidetracking.

Panyu oilfield groupheavy oil reservoirreservoirarchitecture boundarybarrier/interlayerquantitative identificationremain-ing oil distributionpotential tapping technology

涂乙、戴建文、杨娇、王亚会、王华、唐中昊、李琦

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中海石油(中国)有限公司 深圳分公司,广东 深圳 518000

番禺油田群 稠油油藏 储集层 构型界面 隔夹层 定量识别 剩余油分布 挖潜技术

中国海洋石油总公司科技重大项目(十三五)

CNOOC-KJ 135 ZDXM 22 LTD 02 SZ 2016

2024

10.7657/XJPG20240207

新疆石油地质
新疆石油学会

新疆石油地质

CSTPCD北大核心
影响因子：0.985
ISSN：1001-3873
年,卷(期)：2024.45(2)
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