CAJ | 학술논문

为研究火成岩储层中顺磁性物质对核磁共振测量结果的影响,分别选取7块含有顺磁性物质的人造岩心和60块实际火成岩岩心进行核磁共振实验研究,分析顺磁性物质质量分数以及不同回波间隔对核磁孔隙度测量结果的影响。研究表明：顺磁性物质会极大地减小核磁共振孔隙流体的横向弛豫时间T2,造成测量的孔隙度减小,而且不同岩性的火成岩样品,由于顺磁性物质质量分数不同,核磁孔隙度误差也不同,当顺磁性物质质量分数超过6%时,核磁孔隙度基本为零。
위연구화성암저층중순자성물질대핵자공진측량결과적영향,분별선취7괴함유순자성물질적인조암심화60괴실제화성암암심진행핵자공진실험연구,분석순자성물질질량분수이급불동회파간격대핵자공극도측량결과적영향。연구표명：순자성물질회겁대지감소핵자공진공극류체적횡향이예시간T2,조성측량적공극도감소,이차불동암성적화성암양품,유우순자성물질질량분수불동,핵자공극도오차야불동,당순자성물질질량분수초과6%시,핵자공극도기본위령。
In order to investigate into the impact of paramagnets on the result of nuclear magnetic resonance in igneous reservoirs, 7 artificial cores with paramagnets and 60 actual igneous cores had been chosen for nuclear magnetic resonance measurements. The effects of nuclear magnetic resonance consequence by means of the contents of paramagnets and different TE were analyzed. The research illustrated that paramagnets could reduce the T2 of fluids in nuclear magnetic resonance measurement, thus causing the NMR porosity to be lower. Furthermore, the deviation of porosity was distinct because of the different contents in different lithologic igneous rocks. And when the content of paramagnets surpassed 6%, the porosity was nearly 0.