高温、高压凝析气井井筒动态分析新方法

W ellbore Performance Analysis of H igh-Temperature H igh-Pressure Condensate Gas Wells

( 1. 油气藏地质及开发工程国家重点实验室, 西南石油大学 2. 西南油气田分公司川中油气矿勘探开发研究所

3. 塔里木油田分公司开发事业部)

 State Key Laboratory of Oil and
Gas Reservo ir Geology and Exploitat ion, Southwest
Petro leum Institute, Chengdu 610500, China

The we llbore perform ance ana ly sis of the condensate gas
w e lls mostly uses them odification m ethod o f sing le-phase gas
w e ll noda l ana lys is, wh ich ignores the chang e in phase
behav io r and the composition o fw e llbore. Espec ia lly the we lls
w ith rich condensate g as, because the change o f temperature
and pressu re is very obv ious, we m ust cons ider the phase
behav io r in the w ellbore. On the basis o f the conventiona l
w ays, this paper d id the job as fo llow s: by the use of the
form ula in vertical p ipe, accord ing to GLR, div id ing the
analysis m ethod into tw o cases, com bining the flash
ca lcu la tion and EOS, am end ing the com pressib ility factor,
gas- liquid superfic ial tension, v iscosity and so on. Then the
m ethod of the cons idering phase behav io r is m ore appropr iate
to the condensate gas w ells. On the basis of them e thod and
ca lcu la tion m ode l presented by this paper, w e had developed
the corresponded computer program s us ing VB compu ter
language and access data base. By the use o f th is so ftw are
package, w e can accurate ly pred ict the w ellbo re perfo rmance
o f condensate gas w ells in d ifferent tim es, and meanwh ile,
im prov ing the ana ly sis result o f num er ica l simu lation.