多层合采油藏层间动态干扰定量表征新技术  

New Technology for Quantitative Characterization of Interlayer Dynamic Interference in Commingled Producing Oil Reservoir

作　　者：苏彦春 贾晓飞 李云鹏 邓景夫 王公昌 

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《特种油气藏》2015年第6期101-103,146,共3页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"大型油气田及煤层气开发"子课题"海上油田丛式井网整体加密及综合调整油藏工程技术应用研究"(2011ZX05024-002)及"海上油田丛式井网整体加密及综合调整油藏工程技术示范"(2011ZX05057-001)部分研究成果

摘　　要：针对目前多层合采砂岩油藏层间干扰定量表征理论研究较少的现状,在充分研究引起层间干扰的动、静态因素的基础上,提出了层间动态干扰的新概念,并建立了层间动态干扰系数定量表征数学模型。从单层油藏出发并结合层间干扰定义,运用渗流理论推导了多层合采砂岩油藏动态干扰系数与纵向各层含水率、渗透率及合采压差的定量关系。以此为基础,提出了降低层间干扰的对策,如层系调整或层系不变情况下的油井卡层、提液及注水井分层调配。在渤海SZ油田实施了大规模提液降低干扰的措施,表现为提液初期动态干扰系数降低、25-35个月后提液失效。层间动态干扰定量表征新技术对于油井常规降低干扰措施和油田层系调整方案的制订具有一定的指导作用。In view of the lesser theoretical research actualities of quantitative characterization of interlayer interference in commingled producing sandstone reservoir,on the basis of sufficiently studying the dynamic and static factors resulting in interlayer interference,this paper presented the new concept of interlayer dynamic interference,and built a quantitative characterization mathematical model of interlayer dynamic interference coefficients. Starting from the single layer oil reservoir,combined with the interlayer interference definition,this paper used the filtration theory to have derived the quantitative relation between the dynamic interference coefficient of commingled producing sandstone reservoir and the water cut,permeability and commingled producing differential pressure of different layers in vertical direction. On the basis of which,this paper presented the countermeasures to reduce the interlayer interference,e. g.,stuck layer of oil well under circumstances of adjustment or unchanging of series of strata,fluid production increasing and separate layer allocation of water injector. The interference reducing measure of large scale fluid production increasing was implemented in Bohai SZ oilfield: the dynamic interference coefficient reduced at initial stage,but restored after 25- 35 months of fluid production increasing. The new technology of quantitative characterization of interlayer dynamic interference has certain guiding role in the preparation of conventional interference reducing measure of oil wells and series of strata readjustment plan of oilfields.

关 键 词：砂岩油藏 多层合采 层间干扰程度 非均质性 层间矛盾 渤海SZ油田 

分 类 号：TE343[石油与天然气工程—油气田开发工程]