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39 results about "Depletion rate" patented technology

Method for modelling the production of hydrocarbons by a subsurface deposit which are subject to depletion

A method for forming a model simulating production, by an underground reservoir subject to depletion, of hydrocarbons comprising notably relatively high-viscosity oils. From laboratory measurements of the respective volumes of oil and gas produced by rock samples from the reservoir subject to depletion, and the relative permeabilities (Kr) of rock samples to hydrocarbons, a model of the formation and flow of the gas fraction is used to determine a volume transfer coefficient (hv) by means of an empirical function representing the distribution of nuclei that can be activated at a pressure P (function N(P)) which is calibrated with reference to the previous measurements. Considering that the nuclei distribution N(P) in the reservoir rocks is the same as the distribution measured in the laboratory, the numerical transfer coefficient corresponding thereto in the reservoir at selected depletion rates is determined using the gas fraction formation and flow model, which allows predicting the relative permeabilities in the reservoir and the production thereof which is useful for reservoir engineering. Method for forming a model allowing to simulate the production, by an underground reservoir subjected to depletion, of hydrocarbons comprising notably relatively high-viscosity oils. From laboratory measurements of the respective volumes of oil and gas produced by rock samples from the reservoir and subjected to depletion, and the relative permeabilities (Kr) of rock samples to hydrocarbons, a model of the formation and flow of the gas fraction is used to determine a volume transfer coefficient (hv) by means of an empirical function representing the distribution of nuclei that can be activated at a pressure P (function N(P)) which is calibrated with reference to the previous measurements. Considering that the nuclei distribution N(P) in the reservoir rocks is the same as the distribution measured in the laboratory, the numerical transfer coefficient corresponding thereto in the reservoir at selected depletion rates is determined using the gas fraction formation and flow model, which allows to predict the relative permeabilities in the reservoir and the production thereof. Applications notably reservoir engineering.
Owner:INST FR DU PETROLE

Method, system and program storage device for reservoir simulation utilizing heavy oil solution gas drive

ActiveUS20080154563A1Enhance reservoir performance forecastingImprove predictive performanceFluid removalDesign optimisation/simulationFuel oilProduct gas
A method, a system and a program storage device for predicting a property of a fluid, such as fluid production from a subterranean reservoir containing heavy oil entrained with gas is described. The method includes developing a baseline correlation of gas relative permeability krg versus gas saturation Sg. A capillary number dependent correlation is determined capturing the relationship between at least one of critical gas saturation Sgc and capillary number Nca and gas relative permeability krgro and capillary number Nca phased upon a plurality of depletion rates. Capillary numbers Nc are calculated for a plurality of cells in a reservoir model representative of the subterranean reservoir. The baseline correlation is then adjusted to comport with at least one of Sgc and krgro selected from the capillary number dependent correlation to produce a plurality of corresponding adjusted baseline, correlations. Gas relative permeabilities krg for the plurality of cells are selected from the corresponding adjusted baseline correlations. A reservoir simulation is then run utilizing the selected relative permeabilities krg to predict a property of at least one fluid in a subterranean reservoir containing heavy oil entrained with gas.
Owner:CHEVROU USA INC

Method and apparatus for reducing organic depletion during non-processing time periods

Embodiments of the invention generally provide an apparatus and method for replenishing organic molecules in an electroplating bath. The replenishment process of the present invention may occur on a real-time basis, and therefore, the concentration of organics minimally varies from desired concentration levels. The replenishment method generally includes conducting pre-processing depletion measurements in order to determine organic depletion rates per current density applied in the electroplating system. Once the organic depletion rates per current density are determined, these depletion rates may be applied to an electroplating processing recipe to calculate the volume of organic depletion per recipe step. The calculated volume of organic depletion per recipe step may then be used to determine the volume of organic molecule replenishment per unit of time that is required per recipe step in order to maintain a desired concentration of organics in the plating solution. The calculated replenishment volume may then be added to the processing recipe so that the replenishment process may occur at real-time during processing periods. The apparatus generally includes a selectively actuated valve in communicaiton with a fluid delivery line, wherein the valve is configured to fluidly isolate a plating cell during a non-processing time period. The valve may be controlled by a system controller, and thus, the fluid level in the cell may be controlled during a non-processing time period.
Owner:APPLIED MATERIALS INC

Method, system and program storage device for reservoir simulation utilizing heavy oil solution gas drive

A method, a system and a program storage device for predicting a property of a fluid, such as fluid production from a subterranean reservoir containing heavy oil entrained with gas is described. The method includes developing a baseline correlation of gas relative permeability krg versus gas saturation Sg. A capillary number dependent correlation is determined capturing the relationship between at least one of critical gas saturation Sgc and capillary number Nca and gas relative permeability krgro and capillary number Nca phased upon a plurality of depletion rates. Capillary numbers Nc are calculated for a plurality of cells in a reservoir model representative of the subterranean reservoir. The baseline correlation is then adjusted to comport with at least one of Sgc and krgro selected from the capillary number dependent correlation to produce a plurality of corresponding adjusted baseline, correlations. Gas relative permeabilities krg for the plurality of cells are selected from the corresponding adjusted baseline correlations. A reservoir simulation is then run utilizing the selected relative permeabilities krg to predict a property of at least one fluid in a subterranean reservoir containing heavy oil entrained with gas.
Owner:CHEVROU USA INC

Method for producing long-distance transmission optical cable made of manganese and cupronickel special alloy

InactiveCN103163611AMeet the wire diameterMechanicsFibre mechanical structuresCable/conductor manufactureFiberCupronickel
The invention provides a method for producing long-distance transmission optical cables made of manganese and cupronickel special alloy. A preformed rod made of the manganese and cupronickel special alloy is subjected to high-speed wiredrawing and becomes a fiber core of an optical fiber. The fiber core is subjected to coating and cladding to obtain the optical fiber with the depletion rate of less than 3dB/km. The optical fiber with the depletion rate of less than 3dB/km reaches the international leading level of the manganese and cupronickel alloy optical fiber. The optical cable made of the manganese and cupronickel special alloy is an insulator material, has strong immunity on electromagnetic interference in the process of transmitting signals, and is free from natural thunder interference and interference of artificially released electromagnetism. Moreover, the optical cable made of the manganese and cupronickel special alloy is thin in wire diameter, light in weight, flexible, small in occupied space, little in pollution, high in electrical conductivity, corrosion-resistant, heat-resistant, simple in technological process, long in service life and wide in application range. Therefore, products developed through adoption of the method not only can be applied to main communication lines, but also can be applied to an electric power telecommunication control system for industrial monitoring and control. The application range of the optical cables is substantially expanded.
Owner:宁夏海洋线缆有限公司

Method for preventing background traffic loss of application programs

The invention discloses a method for preventing background traffic loss of application programs. The method comprises the following steps: A1, adding part of application programs in a terminal into a white list by a user according to own use habit, and automatically adding the remaining application programs in the terminal into a grey list; A2, recording the traffic depletion rate S2 of each application program in the grey list during lightening of a terminal screen and the traffic depletion rate S3 of each application program in the grey list during turnoff of the terminal screen; and A3, separately comparing the S2 and S3 values of the corresponding application program in the grey list with a preset value S1 of the corresponding application program, forbidding the application program to continuously access a network if S3 is greater than S1, querying the user whether to forbid the application program to access the network or not if S2 is greater than S1, and allowing the application program to continuously access the network if S3 is smaller than or equal to S1 or S2 is smaller than or equal to S1. Compared with the prior art, the method has the advantages of effectively monitoring abnormal traffic depletion, avoiding unnecessary traffic depletion for users and reducing the loss of the users.
Owner:ANHUI ETUO COMM TECH GRP
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