通过产气剖面测试分析气井生产参数变化规律  

Study the variation law of gas well production parametersthrough gas production profile test

作　　者：张丽莎 朱苗苗 许阳 胡燕婷 胡鹏 郭虎[4] ZHANG Lisha;ZHU Miaomiao;XU Yang;HU Yanting;HU Peng;GUO Hu(Changqing Branch,China National Logging Corporation,Xi’an,Shaanxi 710201,China;Geological Research Institute,China National Logging Corporation,Xi’an,Shaanxi 710076,China;China National Logging Corporation,Xi’an,Shaanxi 710076,China;Unconventional Petroleum Research Institute,China University of Petroleum(Beijing),Beijing 102249,China)

机构地区：[1]中国石油集团测井有限公司长庆分公司,陕西西安710201 [2]中国石油集团测井有限公司地质研究院,陕西西安710076 [3]中国石油集团测井有限公司信息评价处,陕西西安710076 [4]中国石油大学(北京)非常规油气科学技术研究院,北京102249

出　　处：《油气井测试》2023年第4期62-67,共6页Well Testing

摘　　要：为进一步分析苏里格气田的开发动态变化规律,研究不同工作制度下不同产层贡献率的变化情况,分析不同工作制度对井底参数的影响,有必要进行产气剖面测井。以T区块一口气井为例,通过监测气井生产动态参数的变化规律,重点分析了该井主力产层的变化和不同生产层位产气贡献率。结果表明液面上方储层产气贡献率与地层系数、孔隙度、饱和度等参数的乘积正相关,储层参数较好的产层生产情况较好,产量较高;气井工作制度的变化直接影响各个产层的贡献率,当配产较低时,主力层产出往往占比较大,配产较高生产压差较大时,差产层、微产层贡献明显上升。该结果对气井的生产动态监测,产能预测,优化气井配产与生产制度有一定的指导意义,可以为气藏的开发调整提供依据。In order to further analyze the dynamic change pattern of gas field development,study the contribution rate and changes of each gas-producing layer under different working regimes,and analyze the influence of working regimes on the bottom parameters of gas wells,gas-producing profile logging is required.Taking a gas well in Block T of Surig gas field as an example,the changes in the main gas-producing layer of the well and the contribution rate of gas production from different production layers were analyzed by monitoring the change pattern of gas well production parameters.Comparison of gas production profiles of gas wells tested for six consecutive years showed that the variation pattern of the main production parameters over time was obvious under different working regimes:gas-producing formations with better reservoir parameters above the liquid surface produced better and had higher yields.The variation of flow pressure at the bottom of the gas well is closely related to the gas well production dynamics,but the gas-liquid interface in the wellbore is relatively stable.Changes in the gas well workover regime can directly affect the contribution of individual producing formations.When the production allocation is low,the proportion of gas-producing layers in the primary layer tends to be relatively large,and when the production allocation is high and the production pressure difference is large,the contribution of the secondary and least-producing layers increases significantly.This study has some guiding significance for monitoring the production dynamics of gas wells,capacity prediction,optimizing gas well production allocation and production system optimization,and can provide a basis for gas reservoir development adjustment.

关 键 词：苏里格气田 产气剖面 工作制度 气井配产 产气贡献率 主力产层 气液界面 储层参数 

分 类 号：TE33[石油与天然气工程—油气田开发工程]