基于突变级数法的压裂层段组合方法研究  

Research on fracturing layer combination method based on mutation series method

作　　者：张善义[1] 兰金玉 ZHANG Shanyi;LAN Jinyu(N0.5 Oil Production Plant,PetroChina Daqing Oilfield Company,Daqing,Heilongjiang 163513,China)

机构地区：[1]中国石油大庆油田有限责任公司第五采油厂,黑龙江大庆163513

出　　处：《油气藏评价与开发》2020年第5期108-113,共6页Petroleum Reservoir Evaluation and Development

基　　金：国家科技重大专项“大庆长垣特高含水油田提高采收率示范工程”(2016ZX05054)。

摘　　要：针对特高含水后期压裂层差异性越来越小、考虑地质因素逐渐增多、压裂层段组合越来越难等问题,优选出能够反应油层特征的储层、物性、含油性、产能等参数,利用突变级数法,将每个小层的多个参数归一成一个综合评价值,通过该评价值进行压裂层段定量组合,这样就解决了高含水后期因压裂层段组合不合理造成的层段内部分砂体无法压开的问题,实现了压裂层段的高效智能组合。通过使用该方法,完成了研究区25口压裂井的层段组合,同期相比单井日均多增油0.5 t,取得了较好的效果。该方法对油层压裂层段定量组合具有良好的借鉴。In the late stage of extra-high water cut,the difference of fracturing layers becomes smaller and smaller,the geological factors taken into account increase gradually,and the combination of fracturing layers becomes more and more difficult,so that,the parameters,such as reservoir,physical property,oil content and production capacity,which can reflect reservoir characteristics are optimized.By using the mutation progression method,the multiple parameters of each small layer are reduced to one comprehensive evaluation value.Through this evaluation value,the quantitative combination of fractured strata is carried out,which solves the problem that some sand bodies in the fractured strata can not be fractured due to the unreasonable combination of fractured strata in the late stage of high water cut,and realizes the efficient and intelligent combination of fractured strata.By this method,the stratified combination of 25 fractured wells in the study area is completed,and the average daily oil increase is 0.5 t more than that of a single well in the same period,achieving a better effect.It is a good reference for the quantitative combination of fractured layers.

关 键 词：突变级数法 层段组合 压裂 储层参数 物性参数 含油性参数 

分 类 号：TE312[石油与天然气工程—油气田开发工程]