CAJ | 학술논문

岩心孔隙介质内的流体相态特征研究是实施CO2埋存及驱油的重要基础。本实验建立了一套超声波测试岩心孔隙介质内流体相态特征的新方法。通过声波探头及夹持器堵头一体化、端面抛光等手段，将声波探头直接作用于孔隙介质，解决了传统测试方法中探头不能承压、声波沿钢体绕射、能量损失过大等诸多问题，同时，自行研制了孔隙介质内流体相态探测声波发射、接收及信号处理软件，提高了测试精度，推动了超声波技术与油气田开发技术的交叉结合与应用发展。以吉林油田某区块天然岩心为例，测试了孔隙介质内CO2的相态特征，分析了孔隙介质对流体相态的影响。结果表明：该方法灵敏度高，数据可靠，避免了常规PV T 方法中忽视孔隙介质影响的误差。
암심공극개질내적류체상태특정연구시실시CO2매존급구유적중요기출。본실험건립료일투초성파측시암심공극개질내류체상태특정적신방법。통과성파탐두급협지기도두일체화、단면포광등수단，장성파탐두직접작용우공극개질，해결료전통측시방법중탐두불능승압、성파연강체요사、능량손실과대등제다문제，동시，자행연제료공극개질내류체상태탐측성파발사、접수급신호처리연건，제고료측시정도，추동료초성파기술여유기전개발기술적교차결합여응용발전。이길림유전모구괴천연암심위례，측시료공극개질내CO2적상태특정，분석료공극개질대류체상태적영향。결과표명：해방법령민도고，수거가고，피면료상규PV T 방법중홀시공극개질영향적오차。
Study on phase behavior of fluids in porous media is an important foundation for both CO 2 sequestration and CO2 flooding. In this paper ,a new method for ultrasonic detection of phase behavior of fluids in porous media was established. Based on integration of ultrasonic sensors and holder plug and end face polishing ,ultrasonic sensors were directly acting on porous and problems of conventional methods like not bearing pressure for sensors ,wave diffraction along steel holder ,large energy loss would be solved. In addition ,transmitting ,receiving and signal processing software was programmed and test accuracy was in-creased. Taking the natural cores of Jilin oilfield as an example ,phase behavior of CO2 in porous media was detected and the impacts of porous media were analyzed. The results showed that the method is highly sensitive ,the data is reliable and the errors of ignoring the impacts of porous media in conventional meth-ods were avoided.