多层合采砂岩稠油油藏层间干扰动态表征及应用  

The dynamic characterization and application of interlayer interference for sandstone heavy oil multilayer commingled producing

作　　者：许家峰 张金庆[1,2] 程林松 安桂荣[1,2] 耿站立[1,2] 

机构地区：[1]中海油研究总院,北京100028 [2]海洋石油高效开发国家重点实验室,北京100028 [3]中国石油大学(北京),北京102249

出　　处：《中国海上油气》2016年第4期48-54,共7页China Offshore Oil and Gas

基　　金：中国海洋石油总公司“十二五”科技重大专项“中海油油气开发发展战略研究(编号:CNOOC-KJ 125 ZDXM06 LTD-06)”部分研究成果

摘　　要：为了获得经济产油量,海上大部分油田采取了多层合采的开发方式,但由于储层平面及纵向的非均质,多层合采时层间干扰、注入水突进、储量动用程度低等层间矛盾会逐渐凸现。基于层间干扰测试全过程,从干扰的阶段性及动态特征出发,重新定义了层间干扰系数;建立了水驱砂岩稠油油藏多层合采层间动态干扰数学模型,揭示了渗透率、地下原油黏度、启动压力梯度等主控因素对层间干扰的影响规律,并针对不同主控因素提出了细分层系调整策略与时机。对海上油田细分层系的实施提出了建议,即通过细分注水有效缓解纵向矛盾,但须进一步提高3段以上细分注水工艺水平,使注水管理达到精细化。To achieve economical oil production, multilayer commingled producing is used in most offshore oilfields. However, because of the heterogeneous characteristics of reservoir, such contradictions as the interlayer interference, water fingering and low producing degree of reserves become more and more serious. Based on the procedure of well interference test, the interlayer interference coefficient is redefined based on the consideration of periodicity and dynamic characteristics. The dynamic interference mathematic model of multilayer commingled producing for water flooding sandstone heavy oil is established to reveal the effects of such main factors as permeability, viscosity and threshold pressure gradient on interlayer interference. The adjustment time and strategy are presented according to different controlling factors. The suggestion of subdivision of lay series for water flooding is proposed for offshore oilfield to meticulous management of water injection, in which the management of muti-stage water injection, especially more than three stages should be improved.

关 键 词：多层合采 稠油油藏 层间干扰 主控因素 数学模型 调整时机 细分注水 

分 类 号：TE345[石油与天然气工程—油气田开发工程]