Distribution Model of Fluid Components and Quantitative Calculation of Movable Oil in Inter-Salt Shale Using 2D NMR

Some inter-salt shale reservoirs have high oil saturations but the soluble salts in their complex lithology pose considerable challenges to production. Low-field nuclear magnetic resonance (NMR) has been widely used evaluating physical properties, fluid characteristics, and saturation of conventional gas as well common reservoirs. However, distribution analysis calculations based on NMR results not investigated because existing technical difficulties. Herein, explore patterns movable shale, a specific experimental scheme was designed which is joint adaptation multi-state saturation, multi-temperature heating, measurements. This novel approach applied core samples from Qianjiang Sag Jianghan Basin China. The experiments were conducted using two sets samples, namely cylindrical powder samples. Additionally, by comparing one-dimensional (1D) two-dimensional (2D) these oil-saturated octamethylcyclotetrasiloxane-saturated states, distributions free water obtained. Meanwhile, residual oil, adsorbed kerogen obtained 2D T1-T2 maps original with sample heated five different temperatures 80, 200, 350, 450, 600 °C. research puts forward identification graph for components Our effectively solves problems composition calculation study area, notable importance subsequent exploration production practices.