多层稠油油藏层间干扰规律研究及应用  

Application of interlayer interference law in multi-layer heavy oil reservoir

作　　者：康博韬 姜彬 陈国宁 郜益华 苑志旺 KANG Botao;JIANG Bin;CHEN Guoning;GAO Yihua;YUAN Zhiwang(CNOOC Research Institute Co.,Ltd,Beijing 100028,China;China University of Geoscience(Beijing),Beijing 100083,China)

机构地区：[1]中海油研究总院有限责任公司,北京100028 [2]中国地质大学(北京)能源学院,北京100083

出　　处：《石油化工应用》2020年第8期14-19,共6页Petrochemical Industry Application

基　　金：国家重大科技专项“海上油田丛式井网整体加密及综合调整技术”,项目编号:2011ZX05024-002。

摘　　要：以海上典型多层稠油油藏SZ36-1为例,利用干扰系数对传统定向井产能公式进行修正,建立多层稠油油藏层间干扰规律动态反演方法;以SZ36-1油田动静态资料为基础,动态反演得到典型井不同含水阶段的干扰系数变化规律;分段拟合探究不同含水阶段层间干扰变化规律与渗透率级差的相关关系,并建立适用于普通稠油油藏的层间干扰评价图版,直接指导油田现场生产。研究表明:(1)多层合采过程中层间干扰普遍存在,对开发效果具有明显抑制作用,渗透率级差3.0~5.0为划分层系的合理界限;(2)不同渗透率级差条件下的层间干扰规律不同,建议及时进行层系调整以改善储量动用状况;(3)本文研究成果预测精度高,实用性强,可直接指导实际生产,对油田现场具有很好的指导意义。Taking the typical offshore multi-layer heavy oil reservoir SZ36-1 as an example,the interference coefficient is used to modify the traditional directional well productivity formula to establish a dynamic inversion method for the interlayer interference law of the multi-layer heavy oil reservoir.Based on the data,the dynamic inversion can obtain the variation law of interference coefficient in different water cut stages of typical wells.Segmentation fitting explores the correlation between the variation law of interlayer interference in different water cut stages and the permeability difference,and establishes suitable for ordinary heavy oil reservoirs.The interlayer interference evaluation chart directly guides the field production of the oilfield.The research shows that,(1)Interlayer interference is common in the multi-layer combined mining process,which has a significant inhibitory effect on the development effect.The permeability difference of 3.0~5.0 is a reasonable boundary for dividing the layer system.(2)The law of interlayer interference under different permeability difference conditions is different.It is recommended to adjust the stratum in time to improve the utilization of reserves.(3)The research results of this paper have high prediction accuracy and strong practicability,which can directly guide the actual production and have a good guiding significance for the oilfield site.

关 键 词：多层合采 动态反演 干扰图版 层系划分 产能预测 

分 类 号：TE345[石油与天然气工程—油气田开发工程]