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194 results about "Gas oil ratio" patented technology

When oil is brought to surface conditions it is usual for some natural gas to come out of solution. The gas/oil ratio (GOR) is the ratio of the volume of gas that comes out of solution, to the volume of oil at standard conditions.

Method and apparatus for an advanced optical analyzer

The present invention provides a sample tank having a window for introduction of electromagnetic energy into the sample tank for analyzing a formation fluid sample down hole or at the surface without disturbing the sample. Near infrared, mid infrared and visible light analysis is performed on the sample to provide a downhole in situ or surface on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation. A flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is pressurized to obviate adverse pressure drop or other effects of diverting a small sample.
Owner:BAKER HUGHES INC

Dynamic reserve calculation method and system for fracture and cave type carbonatite oil reservoir fracture and cave unit

InactiveCN105464652ADynamic Reserve OptimizationImprove accuracyBorehole/well accessoriesPorosityGas oil ratio
The invention relates to a dynamic reserve calculation method and system for a fracture and cave type carbonatite oil reservoir fracture and cave unit. The method comprises a fracture and cave unit type division step, a material balance equation simplification step and a dynamic reserve calculation step. According to the method, firstly, the driving types of the fracture and cave unit are divided according to the communication relationship between the fracture and cave unit and a water body; then, a simplified material balance equation is obtained according to different driving types; then, the dynamic reserve calculation parameters in the material balance equation are optimized by combining production dynamic data through the combined relationship of the ground crude oil density, the natural gas relative density and the gas-oil ratio and the relationship between the elasticity modulus and the porosity; and the dynamic reserve in the dynamic reserve calculation parameters is calculated. The method and the system have the advantages that the precision and the accuracy of the dynamic reserve calculation result are improved; and the basis is provided for the oil reservoir development and exploration and the engineering layout.
Owner:恒泰艾普集团股份有限公司 +1

Method and apparatus for a high resolution downhole spectrometer

The present invention provides a simple, robust, and versatile high-resolution spectrometer that is suitable for downhole use. The present invention provides a method and apparatus incorporating a spinning, oscillating or stepping optical interference filter to change the angle at which light passes through the filters after passing through a sample under analysis downhole. As each filter is tilted, the color or wavelength of light passed by the filter changes. Black plates are placed between the filters to isolate each filter's photodiode. The spectrometer of the present invention is suitable for use with a wire line formation tester, such as the Baker Atlas Reservation Characterization Instrument to provide supplemental analysis and monitoring of sample clean up. The present invention is also suitable for deployment in a monitoring while drilling environment. The present invention provides a high resolution spectometer which enables quantification of a crude oil's percentage of aromatics, olefins, and saturates to estimate a sample's gas oil ratio (GOR). Gases such as CO2 are also detectable. The percentage of oil-based mud filtrate contamination in a crude oil sample can be estimated with the present invention by using a suitable training set and chemometrics, a neural network, or other type of correlation method.
Owner:BAKER HUGHES INC

Experimental evaluation method of gas-injection displaceable oil of fracture-cave type carbonate reservoir

The invention relates to an experimental evaluation method of gas-injection displaceable oil of fracture-cave type carbonate reservoir. The method comprises the following steps in sequence: (1) making a fracture-cave type carbonate core model; (2) preparing an in-place oil sample and injected gas, and setting a pressure point p1 for gas injection and a pressure point p2 for gas injection termination; (3) recovering the original state of the core; (4) carrying out an exhaustion experiment from the top end of the core; (5) carrying out the gas-injection displaceable oil experiment for a plurality of times from the top end of the core at the formation temperature; and (6) calculating development indexes (of the gas injection displaceable oil experiment) such as the recovery efficiency of the raw oil, the gas-oil ratio, the gas-water ratio, and the like. By making a physical single fracture plane overall-diameter fracture-cave core model which keeps the completeness of the core, an experimental testing method for physical gas injection displaceable oil simulation is established, and a tool and a means for evaluating the recovery effect of the fracture-cave type carbonate is provided.
Owner:SOUTHWEST PETROLEUM UNIV

Method and apparatus for a high resolution downhole spectrometer

The present invention provides a simple, robust, and versatile high-resolution spectrometer that is suitable for downhole use. The present invention provides a method and apparatus incorporating a spinning, oscillating or stepping optical interference filter to change the angle at which light passes through the filters after passing through a sample under analysis downhole. As each filter is tilted, the color or wavelength of light passed by the filter changes. Black plates are placed between the filters to isolate each filter's photodiode. The spectrometer of the present invention is suitable for use with a wire line formation tester, such as the Baker Atlas Reservation Characterization Instrument to provide supplemental analysis and monitoring of sample clean up. The present invention is also suitable for deployment in a monitoring while drilling environment. The present invention provides a high resolution spectometer which enables quantification of a crude oil's percentage of aromatics, olefins, and saturates to estimate a sample's gas oil ratio (GOR). Gases such as CO2 are also detectable. The percentage of oil-based mud filtrate contamination in a crude oil sample can be estimated with the present invention by using a suitable training set and chemometrics, a neural network, or other type of correlation method.
Owner:BAKER HUGHES INC

Retrograde condensation damage experimental evaluation method for depletion type development near-wellbore zone of saturated condensate gas reservoir

The invention discloses a retrograde condensation damage experimental evaluation method for a depletion type development near-wellbore zone of a saturated condensate gas reservoir; the method comprises: (1) placing a core in a core holder, and evacuating; (2) increasing oven temperature to gas reservoir formation temperature T0 for 10 hours; establishing irreducible water saturation by using dry gas displacement; (3) injecting dry gas into the core until the pressure of the entry end of the core reaches original formation pressure; (4) injecting condensate gas into the core until gas-oil ratio GOR tested at the exit end of the core is consistent to GOR0, and carrying out condensate gas test under corresponding conditions to obtain gas permeability K0; (5) starting a depletion experiment, recording core exit end pressure Pi and flow Qi, and testing gas permeability Ki of condensate gas under the corresponding pressure condition; (6) drawing a relational curve for core exit pressure and permeability decrease degree. The method has reliable principle, is simple to perform, makes up the defects of conventional retrograde condensation test methods, and has a promising market prospect.
Owner:SOUTHWEST PETROLEUM UNIV

System and method for controlling interval pumping of oil well

ActiveCN102122161ARealize remote intelligent self-dynamic interval controlRealize energy saving and consumption reductionEnergy industryFluid removalStem lengthReal time analysis
The invention discloses a method for controlling interval pumping of an oil well, which comprises the following steps of: generating a pump dynamograph of the oil well according to a ground indicator diagram of the oil well and basic parameters of the oil well, wherein the basic parameters include a water content parameter of the oil well, a gas oil ratio, a viscosity, a stem diameter, a stem length, a pump diameter, a pump depth and the like; and controlling the interval pumping of the oil well according to the pump dynamograph. The invention further discloses a system for controlling the interval pumping of the oil well, which comprises an acquiring module, a ground indicator diagram generation module, a pump dynamograph generation module and an interval pumping control module. With thesystem and the method for controlling the interval pumping of the oil well, the optimal interval extraction starting point and interval extraction time can be analyzed in real time in combination with the oil production law of the oil well, remote intelligent self dynamic interval pumping control of the oil well is implemented, and consequently energy for the oil well is saved, consumption of theoil well is reduced and loss of operating apparatuses is also reduced.
Owner:PETROCHINA CO LTD

High-temperature blocking and adjusting device and method for super-heavy oil reservoir steam flooding

The invention provides a high-temperature blocking and adjusting device and method for super-heavy oil reservoir steam flooding. The high-temperature blocking and adjusting device for super-heavy oil reservoir steam flooding comprises an injection device, a thermal-recovery steam injection well mouth, a nitrogen injection device and a steam injection device. The injection device is connected with the thermal-recovery steam injection well mouth for injecting gel solutions or foaming agent solutions, the nitrogen injection device is connected with the thermal-recovery steam injection well mouth and used for generating and injecting high-purity nitrogen, and the steam injection device is connected with the thermal-recovery steam injection well mouth and used for generating and injecting high-dryness steam. According to the high-temperature blocking and adjusting device and method for super-heavy oil reservoir steam flooding, gel and nitrogen foams are combined, comprehensive water content of a steam flooding well group can be obviously lowered, the gas oil ratio can be obviously improved, the high-temperature blocking and adjusting effect of a super-heavy oil reservoir can be greatly improved, and blocking and adjusting cost is saved.
Owner:CHINA PETROLEUM & CHEM CORP +1

Method and apparatus for a high resolution downhole spectrometer

The present invention provides a simple, robust, and versatile high-resolution spectrometer that is suitable for downhole use. The present invention provides a method and apparatus incorporating a spinning, oscillating or stepping optical interference filter to change the angle at which light passes through the filters after passing through a sample under analysis downhole. As each filter is tilted, the color or wavelength of light passed by the filter changes. Black plates are placed between the filters to isolate each filter's photodiode. The spectrometer of the present invention is suitable for use with a wire line formation tester, such as the Baker Atlas Reservation Characterization Instrument to provide supplemental analysis and monitoring of sample clean up. The present invention is also suitable for deployment in a monitoring while drilling environment. The present invention provides a high resolution spectometer which enables quantification of a crude oil's percentage of aromatics, olefins, and saturates to estimate a sample's gas oil ratio (GOR). Gases such as CO2 are also detectable. The percentage of oil-based mud filtrate contamination in a crude oil sample can be estimated with the present invention by using a suitable training set and chemometrics, a neural network, or other type of correlation method.
Owner:BAKER HUGHES INC

Method for increasing condensate oil recovery ratios of condensate gas reservoirs by means of gas injection vertical displacement

The invention discloses a method for increasing condensate oil recovery ratios of condensate gas reservoirs by means of gas injection vertical displacement, and belongs to the technical field of condensate gas field development. The method includes selecting proper injected gas according to a principle that a gravitational differentiation phenomenon is obvious when a density ratio of the preferable injected gas to fluid of the gas reservoirs is lower than 0.75 under a formation condition in gas injection physical model experiments and actual production; determining injection and production well locations, perforation intervals, well patterns and well spacing by the aid of a kinetic mechanical analysis process for micro-elements of the injected gas so as to effectively form artificial gas caps in gas injection procedures; determining critical gas production rates according to a critical production rate correction formula. The critical gas production rates are used for preventing increase of gas-oil ratios due to coning of the injected gas. The method has the advantages that the artificial gas caps can be formed at high structural positions by the injected gas, condensate gas can be subjected to vertical downward displacement by the aid of the injected gas, accordingly, the sweep efficiency of the injected gas is close to 100%, and the injected gas utilization rate and the final condensate oil recovery ratios can be obviously increased.
Owner:PETROCHINA CO LTD
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