东胜气田独贵气区水平井产出剖面应用分析  

Application of production profile to horizontal wells in Dugui gas province,Dongsheng gasfield,Ordos Basin

作　　者：张宗辉[1] ZHANG Zonghui(No.2 Gas Production Plant,Sinopec North China Company,Xianyang,Shaanxi 712000,China)

机构地区：[1]中国石化华北油气分公司采气二厂,陕西咸阳712000

出　　处：《天然气技术与经济》2021年第4期18-24,共7页Natural Gas Technology and Economy

摘　　要：为了更好地掌握致密砂岩含水气藏水平井各压裂段的产出特征,以鄂尔多斯盆地东胜气田独贵气区水平井为研究对象,通过水平井产出剖面测试,分析了不同压裂段气、水产出能力与储层物性、压裂参数的对应关系,指出了水平井各压裂段流体的贡献能力与影响因素。研究结果表明:①东胜气田独贵气区水平井多采用分段压裂的开采方式,需要开展相关水平井产出剖面测试,掌握各压裂段产气、产水的贡献能力及不同物性条件下的产出特征;②通过参数对比分析可知,水平井各压裂段流体的产出量与孔隙度、渗透率、含气饱和度、泥质含量等参数存在着一定的相关性。结论认为:①通过水平井产出剖面测试可以定量描述水平井各压裂段流体的贡献能力;②水平井各压裂段产气能力主要受储层物性的影响最大,水平段钻遇的储层物性、含气性越好,产气贡献越大;③针对水平井各压裂段的地质物性差异,建议选择测井自然伽马值相对较低、泥质含量低、气测全烃含量高、孔隙度相对较高、声波时差高、含气饱和度高的位置射孔,可以提高储层改造的针对性和有效性。In order to better figure out production behaviors of each fracturing segment in a horizontal well of tight sand⁃stone water-bearing gas reservoirs,some horizontal wells in Dugui gas province of Dongsheng gasfield were taken as objec⁃tives to analyze the correlation of gas/water production capacity in different fracturing segments to both physical properties of reservoirs and fracturing parameters by means of horizontal-well production profile test.Furthermore,the contribution and influential factors of the fluid in each segment were pointed out.Results show that(1)in Dugui gas province,the pro⁃duction mode of staged fracturing is mostly adopted to horizontal wells,so related production profiles shall be tested to make clear the contribution of each segment to gas/water production and the production behaviors under different physical conditions;and(2)parameter comparison demonstrates that the fluid production rate of each segment is in a certain corre⁃lation with porosity,permeability,gas saturation,and shale content.In conclusion,production profile test can quantitatively describe the fluid contribution of each segment.Furthermore,the gas production capacity of each segment may be influ⁃enced mostly by physical properties.The better the physical properties and oil-bearing property of the reservoirs drilled by horizontal segment is,the greater the contribution of horizontal segments to gas production is.What’s more,in view that each segment is different in geological physical properties,it is recommended to perform perforation in the zone with lower Gamma ray value and shale content,and high total hydrocarbon content,porosity,interval transit time,and gas saturation,which can improve stimulation pertinence and effectiveness.

关 键 词：鄂尔多斯盆地 东胜气田 独贵气区 水平井 产出剖面 致密砂岩 含水气藏 

分 类 号：TE37[石油与天然气工程—油气田开发工程]