收藏本站   | English

CobraMax压裂工艺在低渗气藏的应用

来源:特种油气藏 日期:2011-11-22 浏览量:
CobraMax压裂工艺在低渗气藏的应用
 
Application of CobraMax fracturing technology in low permeability gas reservoirs
【作者】 赖海涛; 梁凌云; 朱李安; 黄建宁; 郭清华;
 
 
【Author】 LAI Hai-tao,LIANG Ling-yun,ZHU Li-an,HUANG Jian-ning,GUO Qing-hua(Changqing Oilfield Company,PetroChina,Xi′an,Shaanxi 710018,China)
 
【机构】 中油长庆油田公司;
 
【摘要】 针对苏里格气田现有的分层压裂工艺在薄而多气层段井有效开发方面存在的局限性,长庆油田通过与哈里伯顿公司合作在苏东X井开展了国内第1口CobraMax压裂试验。该技术打破了常规套管射孔,油管连入分层工具,完成3~4层的多层压裂工艺思路,提出了通过连续油管水力喷砂射孔,从环空进行主压裂施工,通过砂塞分隔各压裂层的一种分层改造工艺理念,其最大优势在于改造层数多,可最大限度提高储层纵向动用程度,同时可减少多层射孔费用,有效降低整井费用。2010年该技术在长庆油田成功实施,取得了很好的效果,为国内低压、低产、多层系气田开采提供了借鉴。 更多还原
 
 
【Abstract】 The technology of separate zone fracturing has some limitations for effective development of the thin multilayer gas reservoirs in the Sulige gas field.The first CobraMax fracturing test has been carried out in Sudong X well by Changqing Oilfield Company through cooperation with Halliburton.Different from conventional multilayer fracturing technology which performs casing perforating through running in layer isolation tool conveyed by tubing to finish 3~4 layers,the CobraMax technology uses coiled tubing for hydraulic sand jet perforating,major fracturing operation is carried out in annulus,and fracturing layers are isolated by sand compartments.The biggest advantage of CobraMax is that it can stimulate more layers and improve vertical reservoir producing degree to the maximum extent,meanwhile reduce the cost of multilayer perforating,thereby effectively reducing the overall cost of oil well.This technology was successfully applied in Changqing Oilfield in 2010,achieved very good result,and provided reference for producing gas fields of low pressure,low production and multilayer in China. 更多还原
【关键词】 苏里格气田; 水力喷射; 环空压裂; 分层压裂; 连续油管;
 
【Key words】 Sulige gas field; hydraulic jetting; annulus fracturing; separate layer fracturing; coiled tubing;
 
浏览全文请点击【阅读全文】。