川中充西地区香四段气藏产能研究  

RESEARCH ON THE PRODUCTIVITY OF T_(3x4) GAS RESERVOIR IN CHONGXI REGION OF CENTRAL SICHUAN BASIN

作　　者：黄大志[1] 向丹[1] 

机构地区：[1]成都理工大学"油气藏地质及开发工程"国家重点实验室

出　　处：《天然气工业》2004年第9期33-35,5,共3页Natural Gas Industry

摘　　要：研究了川中充西地区香四段储层的孔隙类型、孔隙度、渗透率、含水饱合度等特征 ,表明该层具有产气能力。岩心产能全模拟试验表明 ,当生产压差为 6MPa时 ,香四段气藏可达到 0 .5× 10 4m3 /d工业产气标准 ,当生产压差增至 10MPa时 ,单井产量可达到 (2 .5 3.0 )× 10 4m3 /d ,为一低产能气藏。动态损害模拟表明产层已受到损害 ,单井产量损害了 2 5 % 5 0 % ;开井生产初期气相渗透率大于 0 .2× 10 -3 μm2 ,产水时气相渗透率小于 0 .0 5× 10 -3μm2 ,生产中可产出少量原生水 ,研究结果与该区测试资料基本吻合。Through analyzing the petrophysical properties, as pore type, porosity, permeability and water saturation, etc, of T3x4 (the fourth member of Xiangxi Group, Upper Triassic) reservoir in Chongxi region of Central Sichuan, it was indicated that this reservoir is of gas-producing ability. The full core productivity simulation test result showed that, when the producing pressure drop was 6 MPa, T3x4 gas reservoir might reach to the commercial production standard of 5 × 103 m3/d; and while the pressure drop increased to 10 MPa, the single-well production was (25-30) × 103 m3/d. Therefore it is a low productivity gas reservoir. The dynamic damage simulation results indicated that the producing formation was damaged and the single-well production lost about 25%-50%; the gas permeability was more than 0. 2×10-3 μm2 at the initial stage and less than 0. 05×10-3μm2 at water-carried stage; and a little initial water was allowed to be produced with natural gas. The research results are basically identical with the testing data in this region.

关 键 词：气藏 生产压差 单井产量 渗透率 测试资料 产能 含水 地区 产出 工业 

分 类 号：TE373[石油与天然气工程—油气田开发工程]