METHOD AND DEVICE FOR MONITORING PREPARATION AND EXPLOITATION OF OIL POOL Russian patent published in 2010 - IPC G01N24/00 G01R33/20 E21B47/00 

FIELD: oil-and-gas production.

SUBSTANCE: method of monitoring of oil pool includes patterned sampling of surface samples of products of development wells, preparation of petrolic component of this product and measurement of prepared samples of oil by means of pulsed method and technique of nuclear magnetic resonance in strong magnetic field in the mode of oil-dynamic monitoring of developed stratums. There are received according to measured data curves of spin-lattice relaxation and NMR spectrums of sampled oil, according to it there are implemented phase and frequency analysis by means of which there are estimated values of amplitude-relaxion and wavelength characteristics of oil samples, there are defined rheological factors and phase composition of those samples. On the basis of estimated values, by means of relaxation-rheological overlay grid there are compared rheograms of changing of flow indexes and raw oil portability by profiles of production facilities. There are installed by systems analysis of rheograms pattern of distributions of its mobility by area and power of objects and there are located look-ahead areas of advanced development of oil pool. It is explored efficiency of physicochemical impact on strata of viscous oil and local and other areas of objects by means of thermo-monitoring of its phase composition. There are estimated current and final oil extraction of local areas on the basis of rheological rates of raw oil. It is implemented integrated analysis of results of fluid monitoring for oil-dynamic modeling of local areas and objects, on the basis of which it is optimised system of following development of oil pool. Proposed method is implemented by means of device including blocks and modules of measurement and registration of free induction decay amplitude from hydrogenous liquids, blocks of automatic tuning and measurement of relaxation and wavelength characteristics of nuclear magnetic resonance, auto-block of treatment of measured characteristics, blocks of automatic identification of rheological factors and frequency analysis of oils, blocks of thermal testing and oil-modeling in operative mode.

EFFECT: increasing of self-descriptiveness and effectiveness of continuous inspection of oil pool development by means of systematic investigations of formation fluids by pulsed method and technique of nuclear magnetic resonance.

16 cl, 2 dwg