Patent application number | Description | Published |
20110100632 | METHOD FOR MONITORING FLOOD FRONT MOVEMENT DURING FLOODING OF SUBSURFACE FORMATIONS - This invention relates generally to methods for monitoring directional flood front movement during oil recovery and more specifically to methods for monitoring flood front movement of flooding agent injected into subsurface formations. The method comprises detecting physical properties of subsurface formation and injection of a flooding agent into said formation through at least one injection well thus forcing reservoir oil movement toward at least one production well. The flooding agent is a highly dispersed gas-liquid mixture having size of gas bubbles not exceeding an average diameter of the pores of said oil-bearing reservoir. The method further comprises detecting the same physical properties of the formation at the same area after flooding and monitoring the flood front profile by registrating changes in the physical properties of the formation caused by the arrival of said flood front. | 05-05-2011 |
20110276270 | METHOD TO DETERMINE CURRENT GAS SATURATION IN A NEAR-WELLBORE ZONE IN A VOLATILE OIL FORMATION - The invention is related to the development of volatile oil deposits and may be used to determine current gas saturation in a near-wellbore zone in a volatile oil formation. The method for the current gas saturation determination in the near-wellbore zone requires the measurement of the formation rock parameters and formation fluid parameters before the gas accumulation start in the near-wellbore zone and creation of the numerical model of the neutron logging signal change during the production period for the measured formation and formation fluid parameters and expected gas saturation value. During the production period when the well productivity decreases, neutron logging is performed and then the measured signals are matched with the model calculations and based on the provision of the best match of the measured and simulated neutron logging signals gas saturation is determined. | 11-10-2011 |
20110276271 | METHOD TO DETERMINE CURRENT CONDENSATE SATURATION IN A NEAR-WELLBORE ZONE IN A GAS-CONDENSATE FORMATION - The invention is related to the development of gas condensate deposits and may be used to determine current condensate saturation in the near-wellbore zone in the formation. The method for the current condensate saturation determination in the near-wellbore zone requires the measurement of the formation rock parameters and formation fluid parameters before the start of gas-condensate production and creation of the numerical model of the neutron logging signal change during the production period for the measured formation rock parameters and formation fluid parameters and expected condensate saturation value. During the production period when the well productivity decreases, neutron logging is performed and then the measured signals are matched with the model calculations and based on the provision of the best match of the measured and simulated neutron logging signals condensate saturation is determined. | 11-10-2011 |
20120150510 | NUMERICAL METHOD OF CALCULATING HEAT, MASS, CHEMICAL AND ELECTRIC TRANSPORT FOR THREE-DIMENSIONAL POROUS SOLID - This invention relates to a method of estimating fluxes for the processes of matter and field transport through fluid-saturated or gas-saturated porous solid. The method comprises obtaining three-dimensional porous solid images by, but not limited, X-ray microtomography, 3D NMR imaging, 3D reconstruction from petrographic thin-section analysis etc., digital processing and morphological analysis of the 3D core images by consecutive application of the image filtering, segmentation and multiple property recognition for obtaining digital 3D models of porous solid samples and performing a set of morphological and geometrical statistical property analysis. For the above mentioned 3D model (models) heat, mass, chemical and electric fluxes are modeled (separately or in combination) under given boundary conditions by means of numerical solver. The new models, which are statistically equivalent to the abovementioned model (models) are generated by means of random field and stochastic geometry theory; heat, mass, chemical and electric fluxes are simulated for new models. The obtained fluxes are averaged over realizations to be used in macroscopic calculations. | 06-14-2012 |
20130341012 | METHOD FOR TRACKING A TREATMENT FLUID IN A SUBTERRANEAN FORMATION - A method of tracking a treatment fluid in a subterranean formation penetrated by a wellbore provides for injecting the treatment fluid with the plurality of tracer agents into the well and the formation. Each tracer agent is an object of submicron scale. The location and distribution of the treatment fluid is determined by detecting changes in the physical properties of the formation caused by the arrival of the treatment fluid comprising a plurality of tracer agents. | 12-26-2013 |
20140000357 | METHOD FOR ESTIMATING PROPERTIES OF A SUBTERRANEAN FORMATION | 01-02-2014 |
20140067281 | DETERMINATION OF LOCAL CHANGES OF CONCENTRATION OF ADMIXTURES IN FLUID FLOW - The invention allows determining a local change of an admixture concentration in a fluid flow at an entrance to a measurement cell. The change of the admixture concentration in time inside the measurement cell is first determined for a fluid containing the admixture, the change of concentration of which in time at the entrance to the measurement cell is known. Then, an impulse response of the cell is found applying the deconvolution method. The change of the admixture concentration inside the measurement cell is then determined for a fluid being studied with an unknown concentration of the admixture at the entrance. The unknown concentration is determined using the impulse response of the measurement cell and the change of the admixture concentration inside the cell. | 03-06-2014 |
20140100795 | METHOD FOR DETERMINING QUANTITATIVE COMPOSITION OF A MULTI-COMPONENT MEDIUM - Methods for determining a quantitative composition of a multi-component medium comprising at least two known immiscible components comprises determining temperature dependencies of specific heat capacity of each of the components. A sample of the multi-component medium is weighed. Specific heat capacity of the sample is determined at least at i−1 temperature levels, where i is the number of components of the multi-component medium. On the basis of the results from determination of specific heat capacity of the components and the temperature dependencies of specific heat capacity of the components, weight coefficients are calculated for each component of the medium. Quantitative content of each of the components of the multi-component medium is determined on the basis of the obtained values of the weight coefficients of the components. | 04-10-2014 |