高温高压气井、凝析气井井筒及近井地带的压力变化规律  

Pressure change law at the wellbore and well-adjacent zone of a HTHP or condensate gas well

作　　者：常志强[1] 肖香姣[1] 朱忠谦[1] 王小培[1] 王海应[1] 

机构地区：[1]中国石油塔里木油田公司勘探开发研究院,新疆维吾尔自治区库尔勒市841000

出　　处：《天然气工业》2012年第10期47-51,112-113,共5页Natural Gas Industry

基　　金：国家科技重大专项"塔里木盆地库车前陆冲断带油气开发示范工程"(编号:2011ZX05046)

摘　　要：高温高压气井的井筒温度与压力的分布是气藏开发方案制定和调整的重要数据。为此,在井筒摩阻室内模拟实验及高温井筒温度室内模拟实验的基础上,优选了高温高压天然气PVT物性参数计算方法,开展了高温高压气井、凝析气井井筒及近井带温度、压力分布规律的理论研究,解决了该类气井的动态监测难题;建立了考虑井流物组成、流体相态、含水量、井身结构、动能损耗、重烃含量、环境温度等多种因素影响的井筒压力温度耦合计算模型;编制了高温高压气井、凝析气井井筒动力学软件,可实时获取气井压力、产能变化规律及储层动态参数信息。现场应用结果表明,这为实时了解气田及单井的生产动态、及时进行平面产气结构优化、制定合理开发技术对策提供了技术手段。The distribution of shaft temperature and pressure of HTHP gas wells is significant for preparing and adjusting gas reservoir development plans.Therefore,based on the indoor experiments of wellbore friction simulation and temperature simulation in a high-temperature bore hole,the method of calculating PVT physical property parameters for HTHP natural gas is selected for theoretical research on the law of pressure and temperature distribution of the wellbore and well-adjacent zone of a HTHP or condensate gas well,which helps solve the problem in dynamic monitoring of such gas wells.A shaft pressure and temperature coupling calculation model is established considering such influencing factors as well fluid composition,fluid phase state,water cut,well bore structure,energy consumption,heavy hydrocarbon content,and ambient temperature.Moreover,the dynamic software is prepared for the wellbore of a HTHP or condensate gas well,which is capable of obtaining in real time the pressure of gas wells,the production change law as well as dynamic parameters of gas reservoirs.Field application indicates that this study provides technical approaches to promptly mastering the performance of gas fields and single wells,optimizing the plane structure of gas production,and preparing feasible development technologies.

关 键 词：塔里木盆地 高温高压气井 凝析气井 井筒 渗流 相态 凝析水 变化 数学模型 

分 类 号：TE37[石油与天然气工程—油气田开发工程]