CO_2气源井产气剖面测试方法探索
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摘要
为确定CO_2气源井射孔各层段产气及产水状况,评价射孔层段储量动用程度,以及为气源井制定科学生产合理的生产制度,首先通过高精度压力计测取气源井的流温、流压资料,了解全井温度、压力梯度情况,确定井筒流体相态;然后采用高压气体密闭测试工艺,根据测得的流体相态,利用氧活化测井技术和PLT测井技术实现CO_2气源井的产能测试,对气源井产能状况进行初步评价,解决了CO_2气源井产气剖面测井难题。
In order to determine the gas and water production status of perforated intervals in CO_2 gas source wells, evaluate the degree of reserves utilization in perforated intervals, and to formulate a scientific and rational production system for gas source wells, two steps were taken. Firstly, the flow temperature and pressure data of gas source wells are measured using high precision manometer to obtain the temperature and pressure gradient of the whole well, and to determine the wellbore fluid phase state. Secondly, oxygen activation logging technology and PLT logging technology are used to realize the productivity test of CO_2 gas source wells through enclosed test process according to the measured fluid phase state. A preliminary evaluation of the productivity of gas source wells has been conducted and solved the problem of logging of gas production profile in CO_2 gas source wells.
In order to determine the gas and water production status of perforated intervals in CO_2 gas source wells, evaluate the degree of reserves utilization in perforated intervals, and to formulate a scientific and rational production system for gas source wells, two steps were taken. Firstly, the flow temperature and pressure data of gas source wells are measured using high precision manometer to obtain the temperature and pressure gradient of the whole well, and to determine the wellbore fluid phase state. Secondly, oxygen activation logging technology and PLT logging technology are used to realize the productivity test of CO_2 gas source wells through enclosed test process according to the measured fluid phase state. A preliminary evaluation of the productivity of gas source wells has been conducted and solved the problem of logging of gas production profile in CO_2 gas source wells.
引文
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[3] 郭海敏.生产测井导论[M].北京:石油工业出版社,2003:153-178.
[4] 夏竹君.产气剖面测井技术在涩北一号气田的应用[J].天然气技术:2008,2(5):36-38.
[5] 丁军鹏.脉冲中子氧活化测井技术的优势[J].石油管材与仪器:2018,2(1):85-87.
[6] 徐海涛,肖勇,刘兴斌.氧活化测井技术在二氧化碳吸气剖面中的新应用[J].石油仪器:2011,25(5):59-61.
[7] 史国宏.天然气开发技术[M].北京:石油工业出版社,2007:103-105.
[8] 刘龙伟.气藏水平井产气剖面实验装置及测试方案[D].西南石油大学,2017.
[9] 张川如.二氧化碳气井的流体密度与相态特征[J].江汉石油学院学报:1994,16(1):52-56.
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