摘要
海上油气田由于开发成本高,为提高经济效益,很多小、薄油气层进行多层合采、油气混采。多层合采井存在层间矛盾,油气同采井在井筒中易形成积液。通过对A井的测试分析,表明该井下部储层贡献较小,上部储层油环油的产出,使井底积液不断增加,造成井底压力测试曲线出现异常。当油嘴逐渐放大,产量增加,下部储层贡献加大,井筒中大部分积液带出,使关井恢复压力计测试值低于产能测试压力。测试压力异常的原因分析,可以判断储层的贡献,为分层开采建议提供可靠的依据。
Because of the high cost of development in offshore oil and gas fields,in order to improve the economic benefit,many small and thinreservoirs are produced by multilayer or oil & gas production. There is a contradiction between the multilayer well,and it is easy to form fluid in the wellbore of the oil and gas wells. By testing and analysis to a well,it shows that the lower part of the well reservoir with smaller,the oil output from the upper reservoir,then deposit in the bottom hole,which result in abnormal pressure at the bottom of the well test curve. When the nozzle is gradually enlarged,increasing production,the lower reservoir contribution increased,carry out the most fluid in wellbore,which make the shut in pressure recovery tester lower than the value of the deliverability test pressure.It can determine reservoir contribution,provide a reliable basis for mining suggestions,when analysis of abnormal test pressure.
出处
《油气井测试》
2016年第4期21-22,25,共3页
Well Testing
关键词
油气同采
多层合采
产能
测试
oil and gas production
multi-layer production
productivity
test
