压裂参数对水平页岩气井经济效果的影响  

Economic Influence of Hydraulic Fracturing Parameters on Horizontal Wells in Shale Gas Bed

作　　者：李庆辉[1] 陈勉[1] 金衍[1] 赵飞[1] 姜海龙[1] 

机构地区：[1]中国石油大学,北京102249

出　　处：《特种油气藏》2013年第1期146-150,158,共5页Special Oil & Gas Reservoirs

基　　金：国家自然科学基金"超低渗透页岩多井多裂缝同步压裂机理研究"(51074171)

摘　　要：采用产能模拟方法将净现值和内部收益率作为评价指标,对不同压裂参数下页岩气井的经济效果进行评价,研究不同压裂间距、压裂级数和加砂量对页岩气井经济效果的影响,结果表明:压裂的间距、级数和加砂量对开发的效果影响显著;压裂间距并非越长越好,当压裂级数和加砂量较少时,短水平段密集压裂反而更易获利;压裂级数通过改变单级压裂的控制体积和支撑剂密度影响产能和收益情况;加砂量通过支撑剂密度改变渗流通道环境,影响最终产量,存在最优铺砂密度并与前2项因素共同影响最终经济效果。实际钻、完井方案制订时,应考虑上述3种工程因素的综合影响,制订最优开发方案。Economic effect of shale gas wells is evaluated under different fracturing parameters and the influence of fracturing well space,fracturing stages and proppant volume on fracturing effect is studied by adopting productivity simulation which regards NPV and IROR as evaluation indicators.The results of the study shows that the influence of fracturing well space,fracturing stages and proppant volume on fracturing effect is obvious;it's not right that the longer the fracturing well space,the better the fracturing effect,however,when fracturing stages and sand volume are small,dense fracturing with short horizontal section length can even get a better effect;fracturing stages can influence productivity and economic effect by changing the controlled volume of individual stage fracturing and proppant density;sand volume changes flow channel environment by proppant,influences productivity,has an optimal density and combined with the 2 factors above influences economic effect.The preparation of drilling and completion program should consider the 3 factors mentioned above and optimal FDP should be prepared.

关 键 词：页岩气 经济评价 产能模拟 压裂参数 净现值 内部收益率 

分 类 号：TE322[石油与天然气工程—油气田开发工程]