高温高压气井试井分析软件  

Well test analysis software for high-temperature and high-pressure gas wells

作　　者：王一 陈殿远 邓志勇 韩鑫 张骞 WANG Yi;CHEN Dianyuan;DENG Zhiyong;HAN Xin;ZHANG Qian(CNOOC China Limited,Zhanjiang Branch,Zhanjiang,Guangdong 524057,China)

机构地区：[1]中海石油(中国)有限公司湛江分公司

出　　处：《油气井测试》2019年第3期74-78,共5页Well Testing

基　　金：中海石油(中国)有限公司综合科研项目“东方气田群高温高压天然气藏开发关键技术研究”(YXKY-2016-ZHJ-02)”

摘　　要：常规试井分析方法与软件难以对高温高压气藏进行精准解释,影响气田勘探开发决策。结合天然气高温高压实验,形成高温高压气藏流体PVT分析方法;考虑启动压力梯度和应力敏感,建立并求解高温高压气藏渗流模型;考虑高温高压气井测试过程中地层压力的变化,建立全新广义二项式产能方程。将研究成果编程,形成南海西部高温高压气井试井分析软件。应用表明,当温度、压力和CO2等非烃含量较高时,能确保试井解释及产能分析准确性,解决传统二项式分析中斜率负异常问题,求取无阻流量。该软件可实现对高温高压气藏精准解释,为南海西部勘探开发提供技术支持。Conventional well test analysis methods and software are difficult to accurately interpret high-temperature and high-pressure (HTHP) gas reservoirs,thus affecting the decision-making of gas field exploration and development.Based on the HTHP experiment of natural gas,the PVT fluid analysis method of high-temperature and high-pressure gas reservoir was formed in this paper.In addition,the percolation model of HTHP gas reservoirs was established and solved considering the start-up pressure gradient and stress sensitivity.A new generalized binomial productivity equation was established considering the formation pressure change during the HTHP gas well testing.The software of well test analysis for HTHP gas wells in the west of South China Sea was formed by programming the research results.The application shows that the accuracy of well test interpretation and productivity analysis can be ensured when the content of non-hydrocarbons such as temperature,pressure and CO 2 was high,and the problem of negative slope anomaly in traditional binomial analysis can be also solved,so that the absolute open flow potential can be obtained.The software can be used to accurately interpret HTHP gas reservoirs and provide technical support for exploration and development in the western South China Sea.

关 键 词：南海西部 高温高压气井 试井分析 试井软件 无阻流量 

分 类 号：TE353[石油与天然气工程—油气田开发工程]