牙哈2-3凝析油气田产量变化特征及预测  

CHARACTERISTICS AND PREDICTION OF PRODUCTION PERFORMANCE OF YAHA 2-3 GAS CONDENSATE FIELDS

作　　者：邓军[1] 洪玉娟[1] 瞿加元[1] 王海[1] 范明国[1] 

机构地区：[1]中国石油塔里木油田公司

出　　处：《天然气工业》2007年第2期87-89,共3页Natural Gas Industry

摘　　要：牙哈2-3凝析油气田是目前我国发现的最大整装凝析油气田,采用循环注气开发,由于其凝析油含量高、相态变化复杂,给生产动态的预测带来了很大困难。为此,在对产量变化特征和影响产量的敏感性因素进行的基础上,预测了注气结束后凝析油的含量。研究表明:地层中析出的凝析油饱和度较低,不会形成气液两相流动;储层中的反凝析现象对天然气产量影响小,而凝析油产量则受反凝析和处理量的限制,凝析油含量下降符合指数递减规律。经综合分析后预测:到2009年注气结束时,凝析油采出程度将达到28.79%,高于开发方案所设计的25.89%。Yaha 2-3,recovered by cyclic gas injection,is the largest uncompartmentalized gas condensate field discovered in China.High content of condensate and complex phase behavior brought out great difficulty to its production forecast.Therefore,the content of gas condensate after gas injection was predicted based on analysis of production performance characters and relevant sensitive factors.Through this study,it can be seen that: saturation of the condensate comes out of the formation is not high enough to form gas-liquid two-phase flow;the production of natural gas is slightly affected by retrograde condensation,while that of gas condensate is constrained by both retrograde condensation and the treatment capacity with a trend of exponential decline.According to comprehensive analysis,the recovery factor of gas condensate by the end of gas injection in the year of 2009,is up to 28.79%,which is higher than 25.89% designed in the development plan.

关 键 词：塔里木盆地 凝析油气田 产量 循环注气 反凝析 采出程度 

分 类 号：TE155[石油与天然气工程—油气勘探]