CAJ | 학술논문

利用核磁共振技术，对东濮凹陷文东沙三中深层高压低渗砂岩储层样品进行测试分析，通过可动流体百分数、可动流体孔隙度参数分析了可动流体的赋存特征及控制因素。研究结果表明，不同离心力的T2谱形态表现为4种类型，T2截止值与物性呈正相关关系。可动流体含量低且其分布具有较强的非均质性，渗透率越高，主流喉道半径越大，可动流体参数值越大，可动流体参数与渗透率的相关关系越好；渗透率越低，可动流体参数衰减越快。储层微观孔隙结构是可动流体赋存的主要控制因素。应用喉道半径区间分布表征微观孔隙结构对可动流体分布的控制，效果较好。物性越好，大喉道控制的可动流体量越高。
이용핵자공진기술，대동복요함문동사삼중심층고압저삼사암저층양품진행측시분석，통과가동류체백분수、가동류체공극도삼수분석료가동류체적부존특정급공제인소。연구결과표명，불동리심력적T2보형태표현위4충류형，T2절지치여물성정정상관관계。가동류체함량저차기분포구유교강적비균질성，삼투솔월고，주류후도반경월대，가동류체삼수치월대，가동류체삼수여삼투솔적상관관계월호；삼투솔월저，가동류체삼수쇠감월쾌。저층미관공극결구시가동류체부존적주요공제인소。응용후도반경구간분포표정미관공극결구대가동류체분포적공제，효과교호。물성월호，대후도공제적가동류체량월고。
The samples of the deep-buried high-pressure and low-permeability sandstone reservoirs in the middle section of the 3rd member of the Shahejie Formation in the Wendong Oil Field of the Dongpu Sag were tested with nuclear magnetic resonance technique. The characteristics and controlling factors of movable fluid were analyzed with movable fluid percentage and porosity. The results have shown that the T2 pattern of the samples displays 4 modes, and the T2 cutoff value is positively correlated with porosity. The movable fluid content is relatively low and the heterogeneity is intense. The higher the permeability is, the wider is the main throat radius. The relation between the movable fluid parameter and the permeability gets better with the increase of permeability. The mova-ble fluid parameter gets higher attenuation velocity with the decrease of permeability and has more sensitivity to the changes of permeability. The micro-pore structure determines the existing state of fluid in deep-buried high-pressure and low-permeability sandstone reservoir. Applying main throat radius, the micro-pore structure control-ling movable fluid was token, which has achieved good results. Wide throat controls more movable fluid when physical property is better.