利用核磁共振录井技术精细评价油气储层

Fine evaluation of oil-gas reservoir with NMR mud logging technology

核磁共振录井技术是目前唯一能在钻井现场快速、准确评价储层物性及流体可动性的一项录井新技术,近年来在各油田得到了广泛的推广与应用。为了进一步发挥该项技术的作用,拓展其应用领域,进行了大量的实验分析及与常规分析、测井、测试结果的对比研究,结果表明该项技术不仅能评价储层物性,还能够评价储层的孔隙结构、孔喉分选性、润湿性、含水性和含油气性,并对产层类型和油气产能进行定性评价。该研究成果大大拓宽了核磁共振录井技术的应用领域,提高了油气层综合解释评价的符合率和准确率,对油气勘探与开发、录井技术进步具有十分重要的意义。

Nuclear rfiagnetic resonance （NMR） mud logging technology is the only technology that can evaluaterapidly and precisely the physical property of reservoir and the mobility of pore fluid at the well-drilling site, and has been widely used in oilfields. In order to give full play to the technology and broaden its ap-plications, many experimental and routine analyses were carried out, and well logging and test results were compared. The results show that this technology is able to evaluate the pore structure, pore and throat sorting, wettability, water-bearing property and hydrocarbon-bearing property, as well as qualitatively evaluate the type of pay zone and oil-gas production capacity. The NMR mud logging technology could im-prove the coincidence and accuracy for comprehensive evaluation of reservoir and has great significance to the exploration and exploitation of oil and gas.