提高煤层气直井动液面解释精度方法研究与应用  

Research and Application of Improving the Interpretation Accuracy of Coalbed Methane Vertical Well Dynamic Fluid Levels

作　　者：王琪[1] 郭晶 范秀波 李邵楠 袁延耿 彭鹤[1] WANG Qi;GUO Jing;FAN Xiubo;LI Shaonan;YUAN Yangeng;PENG He(Shanxi Coalbed Methane Exploration&Development Branch,PetroChina Huabei Oilfield Company,Shanxi 04600;Economic and Technological Research Institute,PetroChina Huabei Oilfield Company,Hebei 062552)

机构地区：[1]华北油田山西煤层气勘探开发分公司,山西046000 [2]华北油田经济技术研究院,河北062552

出　　处：《中国煤层气》2024年第2期30-34,共5页China Coalbed Methane

摘　　要：煤层气井动液面解释精度对于煤层气井精细化排采管控至关重要,本文对比了接箍法、音标法及声速法等测液面方法的优缺点,分析了影响动液面解释精度的主控因素为井筒温度和气泡段,从而提出了一种提高动液面解释精度的新方法。此方法综合考虑了影响动液面解释精度的各个要素,能够依据所解释液面较为准确地反映煤层气井的井底流压,克服了前期其它方法所存在的一系列问题,为煤层气井精细化排采管控提供保障。The interpretation accuracy of dynamic fluid levels in coalbed methane wells is crucial for the precise drainage management of coalbed methane wells.The paper compares the advantages and disadvantages of the coupling method,phonographic method,and sound velocity method for measuring liquid level.The main factors influencing the interpretation accuracy of dynamic fluid levels are wellbore temperature and bubble cross-sectional area.A new method is proposed to improve the interpretation accuracy of dynamic fluid levels,which comprehensively considers various factors affecting the interpretation accuracy.This method can reflect the bottom-hole flow pressure of coalbed methane wells more accurately according to the interpreted fluid levels,addressing a series of issues present in previous methods.This provides a guarantee for the precise drainage and production management of coalbed methane wells.

关 键 词：煤层气直井 动液面 声速 解释精度 

分 类 号：TE37[石油与天然气工程—油气田开发工程]