Method for operational control of technical state of gas and gas condensate wells

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used in development of gas and gas condensate deposits. Method involves standard gas-dynamic well survey on standard filtration modes with construction of relationship between wellhead parameters (pressure and temperature) and pressure at well bottom from gas flow, monitoring conformity of values of wellhead parameters recorded during operation to value of parameters defined by relationship, constructed according to results of gas-dynamic survey (GDS) at current gas flow rate. Pressure is monitored in annular space of well by means of pressure sensor installed on well and based on readings of which with specified sampling period, using a barometric formula, automated system for process control efficiently models bottom-hole pressure and compares it to value of bottom-hole pressure, defined by relationship, constructed according to results of GDS at current gas flow rate. Rapid modelling of bottom-hole pressure and its dynamics is performed using results of actual measurements of gas flow produced with specified sampling period. Rapid modelling of pressure losses in well shaft is determined from results of actual measurements of bottom-hole pressure, its characteristics and current parameters of produced fluid.

EFFECT: present invention enables to efficiently monitor technical condition of wells, which improves industrial safety during operation.

3 cl

 



 

Same patents:

FIELD: radio engineering, communication.

SUBSTANCE: disclosed method, which includes: selecting, for an equilibrium random process, its characteristics and considering said characteristics as coordinates of phase space in which the equilibrium random process occurs; constructing, for the investigated equilibrium random process in accordance with prior information on said process, an evolution-simulation model (ESM), mutually indicating coordinates of said phase space; loading the ESM into the memory of a processor device without selected external factors; measuring, by corresponding sensors, initial characteristics of the investigated equilibrium random process and inputting said characteristics into the memory of the processor device as input signals for the ESM; calculating an integral characteristic of the equilibrium random process and its variation interval; selecting in said variation interval equidistant points and performing, in automatic mode at each of the selected points, calculation of realisations of values of said factor combined with the integral characteristic and corresponding values of the same factor on a smoothing polynomial curve and calculating the correlation ratio of the factor and the integral characteristic, and establishing the variation limits of the factor physically allowable in said conditions; applying a procedure for narrowing the variation range of external factors by switching from an external factor with a high correlation to an external factor with a lower value and using the external factors with the narrowed range as ambient parameter values matched with optimum control of the equilibrium random process.

EFFECT: enabling automatic selection of ambient parameter values matched with optimum control of an equilibrium random process.

4 cl, 4 dwg, 6 tbl, 3 ex

FIELD: physics, computation hardware.

SUBSTANCE: invention relates to computer engineering, particularly to computation systems for determination of the quality of compared complex systems described by notable number of diverse single indices. Device comprises switchboard and first memory unit and differs from know design in that is comprises extra quality evaluation scale generator, quality index generator, second memory unit, peak selection unit, visualisation unit and control unit. Note here that switchboard outputs are connected to first memory data inputs. First memory output is connected to quality evaluation scale generator input. Outputs of said generator and first memory unit output are connected with inputs of quality index generator connected by its output to second memory unit input. Second memory output is connected via peak selector and visualisation unit with control unit input control unit outputs being connected with control inputs of all units.

EFFECT: expanded range of technical means.

2 cl, 2 dwg, 3 tbl

FIELD: medicine.

SUBSTANCE: invention relates to transfusiology and is intended for application in medical institutions in planning and transfusion to patient of preserved donated blood components. Method is realised with application of bar-coding technology, with formation of unified information and technological system, where databank of patients who have transfusions of donated blood components in anamnesis is maintained; transfusion plan, with respect to which available components of donated blood are estimated, is composed in accordance with operation plan, and request is sent to blood centre for missing volume of donated blood components, data about obtained blood components are automatically included into medical information system.

EFFECT: ensuring safety of transfusion of donated blood components.

7 cl, 18 dwg

FIELD: electricity.

SUBSTANCE: proposed device comprises: universal time source, memory unit, a group of digital sensors for voltage parameter, the first group of filters averaging against number of digital sensors in the group, a group of subtracting units, a group of threshold units, a unit identifying a digital sensor for voltage parameter in the group corresponding to maximum parameter increment, OR element, single-trip multivibrator, timer and memory register, a unit calculating average distance, differentiating unit, zero detector and a group of square-wave generators, the second group of averaging filters, a group of units calculating square root and a group of multipliers by a constant.

EFFECT: potential identification of an average distance between disturbed facilities and its change in time.

1 dwg

FIELD: information technology.

SUBSTANCE: device for evaluating a random variable distribution function and its tolerance boundaries on small samples comprises groups of input registers, input registers, delay elements, a multiplier unit, groups of delay elements, groups of subtractor units, a group of squaring devices, accumulating adders, divider units, square-rooting units, adders, shift registers, an exponentiation unit, groups of multiplier units, groups of adders, groups of comparator units, groups of NOT elements, groups of divider units, groups of registers, groups of coincidence circuits, groups of storage devices, a group of accumulating adders, groups of output registers, groups of display units, a unit for eliminating the fractional part of a number, a subtractor unit, a maximum value determining unit, a comparator unit, a group of modulo subtraction units, a display unit, a clock-pulse generator and a pulse distributor.

EFFECT: higher accuracy and broader functional capabilities owing to evaluation of tolerance boundaries of a random variable distribution function.

9 dwg

FIELD: physics, computation hardware.

SUBSTANCE: invention relates to data support for agricultural works. Proposed method consists in activation by the user of process flow planning procedure stored in computer. Note here that said procedure defines the harvesting process and includes the application subsystem. Note here that said application subsystem comes out a software module and comprises algorithm to define demand in selected planning procedure. Said application subsystem activated, it checks what data is necessary and automatically generates the data that describes the revealed demand. Application subsystem proceeds from revealed demand in data to generate independently the questions to be fed to the system to get the required data. Application subsystem exploits the data acquisition system selects the service providers that can reply to definite requests. Service providers generate replies to definite requests to send said replies as target data to application subsystem. Planning procedure generates harvesting process flow from said target data.

EFFECT: higher efficiency of data exchange.

14 cl, 3 dwg

FIELD: physics.

SUBSTANCE: safest version of design solutions is selected and an integrated safety model which will accompany the facility at the next life-cycle phases is approved. Based on analysis of safety and risk factor calculations, the safety status of the facility is evaluated, the "weakest" points in the safety system are established and recommendations are generated for events aimed at reducing the probability of accidents and the extent of consequences thereof. The generated recommendations are input into the integrated model. Safety and risk factors are calculated and effectiveness of any events aimed at safe operation of the facility is evaluated based thereon.

EFFECT: evaluating the safety status of a facility based on analysis of safety and risk factor calculations, establishing the weakest points in the safety system and generating recommendations for events aimed at reducing the probability of accidents and the extent of consequences thereof.

4 cl, 2 dwg

FIELD: physics, computer engineering.

SUBSTANCE: group of inventions relates to processing transactions in a computing environment. Disclosed is processing of a forced transaction, which can be initiated by executing a Begin Transaction instruction in a forced manner. The forced transaction has a range of restrictions associated with it. In the absence of violations of the restrictions, said forced transaction is terminated. Upon detecting a reset situation, said transaction is re-executed beginning from the Begin Transaction instruction. Violation of the restrictions can lead to termination.

EFFECT: faster processing owing to a correcting action based on determining a situation.

17 cl, 27 dwg

FIELD: information technology.

SUBSTANCE: in the method, information corresponding to the competitive position of a first user as applied to a real-time event is received from a first user computing device associated with the first user; information identifying the real-time event is transmitted to a second user computing device associated with a second user; from the second user computing device, corresponding to the competitive position of the second user, real-time event information is received, and information relating to the result of the real-time event is transmitted to the first user computing device and the second user computing device, corresponding to the competitive position of the first user and the competitive position of the second user.

EFFECT: high reliability of real-time competitions between users of computing devices.

28 cl, 13 dwg

FIELD: radio engineering, communication.

SUBSTANCE: device for predicting discrete communication channel state consists of an error detection unit, an error counter, an OR element, a time interval former, N prediction units, N memory units, N prediction evaluation units, a decoder, a decision unit and a display unit. The novelty of the device for predicting discrete communication channel state lies in the delay element, the structure of the prediction evaluation unit, the structure of the controlled nonlinear element and a plurality of new links.

EFFECT: high accuracy of adapting an error prediction algorithm in a communication channel and shorter prediction time.

3 cl, 3 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to oil and gas industry and can be used for measurement of flow rate of production of oil and gas wells. An unit for measurement of flow rate of oil and gas wells includes at least one system for measurement of flow rates of oil, water and gas, which is hydraulically connected by means of pipelines to an inlet line of the unit, which is connected to oil wells, and to the outlet of the header, which is made in the form of a piece of a pipeline with ascending and descending segments. On the descending segment there installed is a multiphase Coriolis flow meter and at least one parametric sensor. A flow homogenisation device is installed in the pipeline in front of the descending segment. A pipeline connecting the measurement system of flow rates of oil, water and gas to the inlet line of the unit, at the inlet of this system, can be also provided with at least one ascending segment and one descending segment, which are located in series. With that, the system inlet is connected to the outlet of the descending segment of the pipeline.

EFFECT: improvement of measurement accuracy of a phase flow rate in a real time mode due to homogeneity of the measured flow of a gas-liquid mixture.

13 cl, 6 dwg

FIELD: oil and gas industry.

SUBSTANCE: group of inventions is referred to versions of a control unit and a produced fluid flow meter for a multipay well. According to the first version the unit comprises a body limited from bellow by a docking device with channels for formation fluid flows and from above by a docking device with adjustable valves installed on it in the quantity equal to that of operated formations. In the body there are interconnected cups, which are coupled hermetically by their hollow butt end to the upper docking device, and cylinders installed by the opposite end in the respective channels of the lower docking device thus forming a tubular annulus and to detached longitudinal channels intended for fluid flows from the respective formations at the wellhead. In the cups there is a crossover seat with radial channels in the cup wall along both sides of the seat. Below the crossover seat from the side of the cup end there are radial channels. Above the crossover seat there is a needle valve made as a slide; at the latter there is a gasket, which facilitates the sealed movement of the needle valve in the cup from an electric drive placed in the sealed part of the cup and fixed in the docking device transferring reciprocal motion to the needle valve in regard to the crossover seat. Electric drives of the needle valves are equipped with devices measuring linear movements of the needle valve with Hall sensors. In the longitudinal channels of the cylinders there are instruments coupled functionally by a cable to a telemetry unit and/or well power supply and/or control point placed in the cup wall so that it may transmit control commands to adjustment valves and data on process parameters of the fluid in the well formations through a cable connector. In the second version of the unit in the cup below the crossover seat there is a channel axial to the crossover seat connecting the longitudinal channel to the tubular annulus and the instruments are placed in the wall of each cylinder and interconnected by a cable in the tubular annulus.

EFFECT: improved reliability for the dual operation of the multipay wells.

4 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: portable metering station of the extracted well liquid includes a vertically installed cylindrical housing that is stepped and composite - upper and lower, which are fixed with a flange connection. In the upper part of the housing there installed is a separating element - hydraulic cyclone provided with a mist eliminator. A gas control valve is installed above the mist eliminator and interconnected with a gas outlet branch pipe. The latter is interconnected with a gas line with connected measuring instruments - a pressure sensor, a pressure gauge and a weight gauge. An inlet liquid branch pipe is interconnected tangentially with the hydraulic cyclone. An outlet liquid line is provided with a mass meter, a moisture meter and a sampling unit, one of which has manual control. A temperature sensor, an information collection and storage unit, which is electrically connected to the measuring instruments, as well as a drain branch pipe with shutoff valves. The gas control valve operates for closing with a pusher of a float stem, which is installed in a sleeve, with a cone-shaped cover plate mounted concentrically and with a gap inside the lower housing. In the sleeve walls on the level of the cover plate base there are side openings connecting the cavity of the hydraulic cyclone to the cavity of the lower housing. Each of the gas and liquid outlet lines in the zone of interaction with a common manifold is provided with check valves.

EFFECT: improvement of operating characteristics.

4 cl, 4 dwg

FIELD: measurement equipment.

SUBSTANCE: measurement of capacity of oil wells connected to a group meter station is carried out by a well switch simultaneously in all connected wells without one in turns and serially, further they determine results of calculation of each well capacity using the formula:

Qi=QΣ-QΣ-1,

Qi - debit of "i" well, connected to the group meter station; Q - total capacity of all wells connected to the group meter station; Q∑-i - readings of flow meter of the total capacity without one (i) well; 1nQi - measured total capacity of wells in turns without one "i" well; n - number of wells connected to the group meter station.

EFFECT: increased accuracy and quality of measurement of capacity in oil wells connected to a group meter station due to efficiency of summary and alternate measurement of each well capacity, provision of sufficient time for true measurement of each well capacity.

FIELD: measurement equipment.

SUBSTANCE: invention relates to the field of oil production and to instrumentation and can be used for measurements of oil and gas well flow rate. The device contains an input pipeline, a separator with a float, a gas pipeline with a gas meter and on-off air operated valve fitted with position locks of and the bellow chamber. The liquid pipeline is fitted with a liquid meter and the same valve. Above-bellow (minus) cavities of chambers of both valves are pneumatically connected a gas spool. To the top cavity of the separator the input channel of the switching device with three output channels is connected pneumatically. One output channel of this device is pneumatically connected to the above-bellow cavity of the valve chamber on the gas pipeline. The second output channel is connected pneumatically to the above-bellow cavity of the valve chamber on the liquid pipeline. The third output channel is connected pneumatically to the gas spool on the output pipeline.

EFFECT: design simplification, possibility of measurement of extremely small flow rates of not only liquid, but also gas.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method for determining volume of consumed liquid at pumping from a grouting tank to a delivery line of a pump involves measurement of the number of revolutions of a drive shaft of the pump. From the moment of liquid pumping to the delivery line there additionally measured in the grouting tank is drop in its level in the range sufficient for calculation of a conversion coefficient of the number of revolutions of the drive shaft of the pump to volume of consumed liquid. The current value of volume of consumed liquid is determined depending on surface area of liquid in the tank, drop in level of liquid in the tank, conversion coefficient of the number of revolutions of the drive shaft of the pump to volume of consumed liquid, the number of revolutions of the drive shaft of the pump, which is measured from the moment of completion of measurement of liquid level drop.

EFFECT: improvement of accuracy, simplification and automation of a process for determination of volumes of drilling and grouting liquids pumped to a well.

1 dwg

FIELD: measurement equipment.

SUBSTANCE: invention relates to production of a well fluid, in particular, to the method of measurement of a multi-phase flow of a fluid using a flow meter. The method includes detection of a multi-phase flow in a flow meter by measurement of fluid pressure in a flow meter and usage of the measured pressure to calculate flow density. The total flow through the flow meter is determined on the basis of the calculated density and PVT of the fluid analysis. The corrected total mass flow is calculated using the correction methodology for sliding of liquid/gas. Flow values are also corrected with account of the flow coefficient in leakage that varies together with variations of the Reynolds number for the fluid. Gas and oil fractions may be determined by the corrected total mass flow rate and value of the gas fraction.

EFFECT: increased accuracy of measurement of a multi-phase flow of a fluid.

16 cl, 4 dwg, 1 tbl

FIELD: oil and gas industry.

SUBSTANCE: method consists in measurements of amplitude values of a geophysical parameter along the axis of a cased string of the well and depth H, on which there detected are maximum amplitude values of the measured parameter, as per which depth of the gas-saturated formation is determined. In the well, under action of difference between formation and wellhead pressures, a gas flow of known velocity V is arranged and time distribution of amplitude values of gas humidity in the same flow is measured, and depth of the gas-saturated formation in the well is determined by the following formula: H=V·t, where t - time of occurrence of maximum at time distribution of humidity amplitude values.

EFFECT: simplifying technical implementation of the method due to eliminating the need for geophysical investigations of logging measurements.

2 cl, 2 dwg

FIELD: oil and gas industry.

SUBSTANCE: out of oil well products in the form of oil-water mixture clean water is extracted by the system of siphons due to creation of hydraulic gate for oil and emulsion flow. Oil and emulsion passing through the hydraulic gate are accumulated by switching and creating hydraulic gate for clean water flow for the purpose of further identification by density gage and measurement by volumetric displacement meter. When liquid is accumulated up to certain level hydraulic gate is created for gas flow. Under action of increasing gas pressure liquid is squeezed from settlers when combined flow-rate controller is open. When liquids level drops in settlers the hydraulic gate is removed and gas flow is started through combined flow gage, combined flow-rate controller. Pressure and temperature is measured during discharge to common header. Volume-flow rate is measured for components of oil, emulsion, water and gas. Pressure of the medium is maintained within the specified interval of its values. Parameters are calculated for measurement process and flow rate of oil wells, at that ratios of liquid or gas flow rates to ascending speed of oil and emulsion bubbles in water or gas bubbles in liquid are ensured by selecting cross-section of hydraulic gate tubing. Arrangement where gas line comprises gas flow meter and gas flow regulator. Gas separator in the lower part is coupled to the common head by combined flow gage, combined flow-rate controller and density gage through a buffer tank, which is connected to a separating tank by gas pipeline and liquid pipeline. Separating tank and buffer tank interconnected by gas pipeline form direct and opposite siphon while separating tank and buffer tank interconnected by liquid pipeline form opposite siphon. The buffer tank is coupled to the common head by measuring line. The separating tank is coupled to the main gas line by gas pipeline and to gas separator through a vertical settler and pipeline forming two direct siphons and two opposite siphons. Bafflers are installed in gas separator between the zone of vertical settler and vertical pipeline. The microprocessor is coupled to gas flow meter, gas flow regulator, combined flow gage, combined flow-rate controller and density gage.

EFFECT: improved quality and efficiency of flow rate measurement for oil well products.

2 cl, 1 dwg

FIELD: oil and gas industry.

SUBSTANCE: method lies in simultaneous measurement of temperature and pressure at several depths. At that measurements are performed directly upon start-up of the well till stabilisation of temperature occurs in the well borehole within the period of time t defined as per the following formula t<VQ=πR2LQ, day, where V is volume of the borehole horizontal section within the range of pay thickness, m3; L is length of the borehole horizontal section within the range of pay thickness, m; R radius of the borehole, m; Q is well flow rate, m3/day.

EFFECT: improved accuracy in determination of flowing intervals in horizontal wells.

1 dwg

FIELD: oil and gas industry.

SUBSTANCE: installation comprises underground equipment assembly run in the well using the pipes string, including funnel-positioner, lower packer, reducer-positioner, device of injection distribution, top packer, extension. Device of injection distribution contains casing and removable parts, is equipped with to independent pressure gauge, middle independent pressure gauge, and bottom independent pressure gauge. Top and bottom unions are installed in the removable part of the device of injection distribution with possibility of both unions removal by one round run operation.

EFFECT: assurance of possibility of information acquisition on injection pressure upstream and downstream each union for long time period, reception of reliable data on injection mode, increased process reliability.

4 cl, 2 dwg

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