摘要
中江气田高庙区块JS_3^(3-2)气层单井测试产能及生产情况在区域上差异较大;气层储集空间主要为残余粒间孔、粒间溶孔、粒内溶孔;气层测井解释孔隙度为6.4%~14.0%,渗透率为(0.03~0.86)×10^(-3)μm^2,属于典型的低孔、低渗储层。气藏目前正处于开发建产早期阶段,影响气井产能的主要因素尚不明确。利用录井、测井、薄片、测试及试采分析资料,对JS_3^(3-2)气层产能分布特征及主控因素进行研究。结果表明:JS_3^(3-2)气层3条河道实测地压系数各不相同,河道之间储层连通性较差,西部河道气井产能低,东西向河道及东部河道气井产能较高,地压系数高低与气井产能之间无明显对应关系;JS_3^(3-2)气层气井产能主要受气井构造相对位置、储层非均质性及储层有效厚度共同控制,单条河道内构造位置相对较高,孔、渗性能相对较好,储层有效厚度相对较大的气井产能较高。
There are large regional differences between testing productivity of single well and production situation in JS3^3-2 gas reservoir of Gaomiao block in Zhongjiang gas field.Gas reservoir space is mainly residual intergranular pores,intergranular dissolved pores,and intragranular dissolved pores.Though gas logging interpreta- tion,the porosity is between 6.4% to 14.0%,and the permeability is between 0.03×10^-3 to 0.86×10^-3μm^2.It is a typical low porosity and low permeability reservoir.The gas reservoir is currently in early stages of development ,and the main influencing factors of the gas well productivity are not clear.The characteristics and the main controlling factors of the JS3^3-2 gas reservoir productivity were studied by using the data of mudlogging,well-logging,slice identification,testing and production test.The results show that the measured formation pressure coefficients of three fiver channels in JS3^3-2gas reservoir are various with each other,and con- nectivity is poor among them.The productivity of the gas wells in western fiver channels is low,and that in east-west and eastern fiver channels is. high.There are no obvious correspondence between the formation pressure coefficients and gas well productivity.The gas well productivity of JS3^3-2 gas reservoir is mainly affected by relative position of gas well structure ,reservoir heterogeneity and effective reservoir thickness together.The gas wells with relatively high structure position in one fiver channel,relatively good porosity and permeability, and relatively deeper effective reservoir thickness will gain high productivity.
作者
谭理亚
邓强
李兴文
范世龙
何仕碧
Tan Liya Deng Qiang Li Xingwen Fan Shilong He Shibi(sohool of Geoscienee and Technology,Southwest Petroleum University,Xindu Sichuan 610500 West Siehuan Gas Production Plant,SINOPEC Southwest Oil ＆ Gas Company,Deyang Siehuan 618000)
出处
《中外能源》
CAS
2017年第5期32-38,共7页
Sino-Global Energy
关键词
中江气田
高庙区块JS3^3-2气层
气井产能
主控因素
构造位置
有效厚度
非均质性
Zhongjiang gas field
Gaomiao block JS3^3-2 gas reservoir
gas well productivity
main controlling factors
structure position
effective thickness
heterogeneity
