CN116427906B - Metering device and oil well yield metering method - Google Patents
Metering device and oil well yield metering method Download PDFInfo
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- CN116427906B CN116427906B CN202310389539.XA CN202310389539A CN116427906B CN 116427906 B CN116427906 B CN 116427906B CN 202310389539 A CN202310389539 A CN 202310389539A CN 116427906 B CN116427906 B CN 116427906B
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- oil
- liquid
- weighing
- storage cavity
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- 239000003129 oil well Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 14
- 239000007788 liquid Substances 0.000 claims abstract description 388
- 238000003860 storage Methods 0.000 claims abstract description 231
- 238000005303 weighing Methods 0.000 claims abstract description 118
- 238000004146 energy storage Methods 0.000 claims description 42
- 239000011550 stock solution Substances 0.000 claims description 26
- 230000007246 mechanism Effects 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000005381 potential energy Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 13
- 210000004712 air sac Anatomy 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 117
- 239000007789 gas Substances 0.000 description 36
- 239000011261 inert gas Substances 0.000 description 11
- 239000012530 fluid Substances 0.000 description 10
- 238000004140 cleaning Methods 0.000 description 8
- 239000000243 solution Substances 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The invention relates to the technical field of oil well yield measurement, in particular to a measuring device, which comprises: the liquid storage energy accumulator is internally provided with a liquid storage cavity and an air sac, wherein the liquid storage cavity is used for storing oil liquid produced by an oil well; the valve assembly is used for adjusting the flow rate of the oil liquid conveyed to the liquid storage cavity and/or adjusting the flow rate of the oil liquid output from the liquid storage cavity; the weighing connecting pipes are respectively connected with the valve assembly and the liquid storage cavity; the weighing assembly is used for weighing the liquid storage energy accumulator; the inflation assembly is used for inflating gas into the air bag and/or the liquid storage cavity; under the condition that the oil in the liquid storage cavity reaches the preset weight, the oil in the liquid storage cavity is weighed. The interference of gas on measurement is not needed to be considered, and the measurement accuracy is improved.
Description
Technical Field
The invention relates to the technical field of oil well yield measurement, in particular to a measuring device and an oil well yield measuring method.
Background
The oil produced by an oil well is typically a three-phase medium, mixed with crude oil, water and associated gas. Because the conditions of each oil well are inconsistent, the liquid amount and the gas amount produced by different oil wells are unstable, the fluctuation of the three-phase change of oil, gas and water is large, and the oil liquid amount produced by the oil wells cannot be accurately measured by the existing flowmeter. Moreover, the existing metering device is complex in structure, low in metering precision and incapable of realizing accurate metering. And the inner wall of the metering device is wax-deposited and scaled after metering, which affects the subsequent metering precision.
Accordingly, there is a need for a metering device and method for metering oil well production that at least partially addresses the problems of the prior art.
Disclosure of Invention
In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
To this end, a first aspect of the invention provides a metering device.
In a second aspect, the invention provides a method of metering oil well production.
In view of this, an embodiment according to a first aspect of the present application proposes a metering device comprising:
the liquid storage device comprises a liquid storage energy storage device, wherein a liquid storage cavity and an air bag are arranged in the liquid storage energy storage device, and the liquid storage cavity is used for storing oil produced by an oil well;
the valve assembly is used for adjusting the flow rate of the oil liquid conveyed to the liquid storage cavity and/or adjusting the flow rate of the oil liquid output from the liquid storage cavity;
the weighing connecting pipes are respectively connected with the valve assembly and the liquid storage cavity;
the subassembly of weighing for weigh above-mentioned stock solution energy storage, the subassembly of weighing includes: the baffle is arranged on the outer wall of the liquid storage energy accumulator;
the weighing sensor is connected with the baffle plate at one end;
the other end of the weighing sensor is connected with the lifting mechanism;
the inflation assembly is used for inflating gas into the air bag and/or the liquid storage cavity;
under the condition that the oil in the liquid storage cavity reaches the preset weight, the valve assembly is adjusted to a first state, and the air bag is kept in a compressed state; and under the condition that the weighing of the oil in the liquid storage cavity is finished, the valve assembly is adjusted to a second state, and the air bag rebounds to push the oil to be discharged from the liquid storage cavity.
In one possible embodiment of the present invention,
the plurality of liquid storage energy storages are arranged, each liquid storage energy storage is correspondingly provided with the valve component, and the plurality of liquid storage energy storages are connected in parallel with the oil well;
under the condition that one of the liquid storage energy storages is in weighing, oil enters the liquid storage cavity of at least one liquid storage energy storage.
In a possible embodiment, a plurality of baffles are provided, the plurality of baffles are distributed at intervals along the circumference of the liquid storage accumulator, and the number of the weighing sensors corresponds to the number of the baffles;
the weighing sensors are connected to the lifting mechanism.
In a possible embodiment, the valve assembly is connected to the liquid storage reservoir by a pipeline, the pipeline comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is used for being connected to the oil well and the liquid storage reservoir, and the liquid outlet pipe is connected to the liquid storage reservoir;
the valve assembly includes: the liquid inlet valve is arranged on the liquid inlet pipe, the liquid outlet valve is arranged on the liquid outlet pipe, and the safety valve is arranged between the liquid inlet pipe and the liquid outlet pipe.
In a possible embodiment, the above metering device further comprises:
the joint assembly comprises a weighing connecting joint, a first joint and a second joint, wherein the weighing connecting joint is arranged on the weighing connecting pipe, so that the weighing connecting pipe is at least provided with at least three degrees of freedom, and the weighing connecting joint is positioned between the liquid inlet valve and the liquid outlet valve;
the first joint is arranged at one end of the liquid inlet pipe, which is close to the oil well;
the second joint is arranged at one end of the liquid outlet pipe far away from the liquid storage energy accumulator; wherein the first joint and the second joint are self-closing quick joints.
In one possible embodiment, the inflation assembly includes:
a gas source;
the first inflation tube is connected with the air source, communicated with the liquid storage cavity and used for inflating air into the liquid storage cavity;
the second air charging pipe is connected with the air source and communicated with the air bag.
In a possible embodiment, the above metering device further comprises:
the pressure adjusting assembly is arranged on at least one of the first air charging pipe, the second air charging pipe, the liquid inlet pipe and the liquid outlet pipe.
In one possible embodiment, the pressure adjustment assembly includes:
a pressure sensor;
a pressure release valve;
and the controller is respectively connected with the pressure sensor and the pressure relief valve and is used for adjusting the state of the pressure relief valve according to the pressure data sent by the pressure sensor.
In a possible embodiment, the above metering device further comprises:
the first conduit recoverer is arranged on the liquid inlet pipe;
the second conduit recoverer is arranged on the liquid outlet pipe.
Compared with the prior art, the invention at least comprises the following beneficial effects: the metering device that this application embodiment provided is provided with stock solution energy storage, valve assembly, weighing module and inflation subassembly. Wherein, be provided with stock solution chamber and gasbag in the stock solution accumulator, the accessible subassembly of aerifing is aerifyd to the gasbag for the gasbag can accumulate elastic potential energy. The liquid storage cavity can be used for storing oil produced by an oil well, and after the oil in the liquid storage cavity increases, the air bag can be compressed, so that the pressure of the air bag increases. And the valve component is connected to the liquid storage energy accumulator through a pipeline, and the state of the valve component is changed to adjust the flow of the oil liquid conveyed to the liquid storage cavity and the flow of the oil liquid output from the liquid storage cavity. The weighing connecting pipe is connected to the valve assembly and the liquid storage cavity so as to convey the oil of the oil well into the liquid storage cavity. The weighing assembly is used for weighing the weight of oil in the liquid storage cavity, and particularly is provided with a baffle, a weighing sensor and a lifting mechanism. Wherein, the baffle sets up in the outer wall of stock solution energy storage near one side at top, and lifting mechanism can set up in the side or the bottom of stock solution energy storage, is provided with weighing sensor between baffle and the stock solution energy storage, and operation lifting mechanism can jack-up the stock solution energy storage through the cooperation of weighing sensor and baffle for the weight of stock solution energy storage is whole to be acted on weighing sensor on, in order to guarantee that the weighing result is more accurate. By the weighing and metering method, interference of gas in oil liquid on metering is not needed to be considered, and metering accuracy is improved. Specifically, after the oil in the liquid storage cavity reaches the preset weight, the adjusting component is adjusted to a first state so as to stop conveying the oil to the liquid storage cavity, the oil in the liquid storage cavity applies pressure to the air bag, and the air bag is kept in a compressed state. At this time, the whole of the liquid storage energy accumulator is weighed to obtain the total actual weight of the liquid storage energy accumulator and the oil therein. And then the valve assembly is adjusted to a second state, the liquid storage cavity is communicated with the pipeline, the air bag rebounds to discharge oil in the liquid storage cavity, after the oil is discharged and is stabilized, the liquid storage energy accumulator for emptying the oil is weighed again through the weighing assembly, the actual weight of the oil in the liquid storage cavity can be obtained through calculation, the accuracy of the metering result is high, and the metering device has a simple integral structure and is convenient to use and maintain. After metering, the liquid storage cavity can be filled with gas through the gas filling component so as to clean residual oil in the liquid storage cavity and the pipeline. Specifically, close the valve assembly, fill gas in order to compress the gasbag to the stock solution chamber through the subassembly that aerifys, adjust the valve assembly later for stock solution chamber and pipeline switch on, the gasbag is kick-backed in order to make the gas in the stock solution chamber carry the residual fluid to discharge, thereby plays the effect of clearance, avoids stock solution chamber and pipeline inner wall residual fluid to solidify and scale deposit, guarantees follow-up measurement precision, improves the reliability.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the specification. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic structural diagram of a metering device according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a method for measuring oil well production according to an embodiment of the present application.
The correspondence between the reference numerals and the component names in fig. 1 is:
110 liquid storage energy storages, 1101 first liquid storage energy storages, 1102 second liquid storage energy storages, 111 liquid storage cavities, 112 air bags, 120 valve components, 121 first liquid inlet valves, 122 first liquid outlet valves, 123 safety valves, 124 second liquid inlet valves, 125 second liquid outlet valves, 130 weighing components, 131 baffles, 132 weighing sensors, 133 lifting mechanisms, 134 weighing connecting pipes, 141 first air charging pipes, 142 second air charging pipes, 151 liquid inlet pipes, 152 liquid outlet pipes, 161 first connectors, 162 second connectors, 163 weighing connecting connectors, 1631 rotary connectors, 170 pressure adjusting components, 171 pressure sensors, 172 pressure relief valves, 181 first catheter recoverers and 182 second catheter recoverers.
Detailed Description
In order to better understand the technical solutions described above, the technical solutions of the embodiments of the present application are described in detail below through the accompanying drawings and the specific embodiments, and it should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of the present application, and not limit the technical solutions of the present application, and the embodiments of the present application and the technical features in the embodiments of the present application may be combined with each other without conflict.
As shown in fig. 1, an embodiment according to a first aspect of the present application proposes a metering device comprising: the device comprises a liquid storage energy accumulator 110, wherein a liquid storage cavity 111 and an air sac 112 are arranged in the liquid storage energy accumulator 110, and the liquid storage cavity 111 is used for storing oil produced by an oil well; a valve assembly 120 for adjusting the flow rate of the oil supplied to the reservoir 111 and/or for adjusting the flow rate of the oil outputted from the reservoir 111; a weighing connection pipe 134 connected to the valve assembly 120 and the liquid storage chamber 111, respectively; a weighing unit 130 for weighing the liquid storage 110; the weighing assembly 130 includes: a baffle 131 disposed on an outer wall of the liquid storage tank 110; a load cell 132, wherein one end of the load cell 132 is connected to the baffle 131; and a lifting mechanism 133, wherein the other end of the load cell 132 is connected to the lifting mechanism 133. An inflation unit for inflating the air bag 112 and/or the liquid storage chamber 111 with air; wherein, when the oil in the reservoir 111 reaches a preset weight, the valve assembly 120 is adjusted to a first state, and the air bag 112 is kept in a compressed state; when the weighing of the oil in the reservoir 111 is completed, the valve assembly 120 is adjusted to the second state, the air bag 112 is restored to the initial state, and the oil is pushed to be discharged from the reservoir 111.
It is understood that the metering device provided in the embodiments of the present application is provided with a liquid storage reservoir 110, a valve assembly 120, a weighing assembly 130, and an inflation assembly. Wherein, the liquid storage cavity 111 and the air bag 112 are arranged in the liquid storage energy accumulator 110, and the air bag 112 can be inflated by the inflation assembly, so that the air bag 112 can accumulate elastic potential energy. The reservoir 111 may be used to store oil produced by the well, and when the oil in the reservoir 111 increases, the bladder 112 may be compressed, so that the pressure of the bladder 112 increases. And the valve assembly 120 is connected to the liquid storage device 110 through a pipeline, and the state of the valve assembly 120 is changed to adjust the flow rate of the oil liquid delivered to the liquid storage cavity 111 and the flow rate of the oil liquid output from the liquid storage cavity 111. The weighing assembly 130 is used for weighing the weight of the oil in the liquid storage cavity 111, and by a weighing and metering method, the interference of gas in the oil on metering is not required to be considered, so that the metering accuracy is improved. Specifically, after the oil in the liquid storage cavity 111 reaches the preset weight, the adjusting component is adjusted to the first state to stop conveying the oil to the liquid storage cavity 111, the oil in the liquid storage cavity 111 applies pressure to the air bag 112, and the air bag 112 is kept in a compressed state. At this time, the accumulator 110 is weighed as a whole to obtain the total actual weight of the accumulator 110 and the oil therein. And then the valve assembly 120 is adjusted to a second state, so that the liquid storage cavity 111 is communicated with the pipeline, the air bag 112 rebounds to discharge the oil in the liquid storage cavity 111, after the oil is discharged and is stabilized, the liquid storage energy accumulator 110 for emptying the oil is weighed again through the weighing assembly 130, and the actual weight of the oil in the liquid storage cavity 111 can be obtained through calculation. The metering device has simple integral structure and is convenient to use and maintain. After metering, the air charging assembly may charge air into the liquid storage chamber 111 to clean the residual oil in the liquid storage chamber 111. Specifically, valve assembly 120 is closed, gas is filled into liquid storage cavity 111 through the inflation assembly to compress air bag 112, valve assembly 120 is adjusted afterwards for liquid storage cavity 111 and pipeline switch on, and air bag 112 kick-backs so that the gas in liquid storage cavity 111 carries residual oil to be discharged, thereby plays the effect of clearance, avoids liquid storage cavity 111 and the inner wall department of pipeline residual oil to solidify the scale deposit, guarantees follow-up measurement precision, improves the reliability.
It should be noted that, the gas filled into the air bag 112 and the liquid storage cavity 111 by the air filling component is inert gas, so as to ensure stable metering process, improve safety, and exemplary inert gas can be nitrogen, so that cost is reduced and materials are easily obtained. According to the actual use requirement, after the air bag 112 is filled with inert gas, the pressure of the air bag 112 is 0.3MPa to 1.5MPa.
It is understood that the weighing assembly 130 may record the pre-set weight of the liquid charge of the liquid storage reservoir 110. For example, considering practical application and use situations, the quantitative values of the liquid storage accumulator 110 may be 6kg, 8kg, 10kg and 12kg, that is, the preset weight of the liquid storage accumulator 110 is the quantitative value. The greater the single weighing, the less the error effect is, and the accuracy of the measurement is proportional to the quantitative value of the reservoir 110. In general, oil produced by an oil well contains gas, for example, oil with larger gas content is metered, the gas can raise the pressure of the air bag 112 more, so that the load of an underground oil extraction pump is increased, normal use of equipment is affected, and the metering accuracy is reduced, therefore, when the liquid production amount of the oil well with larger gas content is metered, the liquid storage energy accumulator 110 with smaller metering value can be selected for metering for multiple times, and the influence of excessive gas on the metering result is reduced, namely, the gas content is inversely proportional to the metering value of the selected liquid storage energy accumulator 110.
It will be appreciated that the oil well fluid production over a predetermined period of time is the difference between the total actual weight of the reservoir 110 and the fluid therein and the weight of the reservoir 110 emptied of fluid.
Illustratively, the top of the housing of the reservoir 110 may be provided with an inflation port through which the inflation assembly may inflate the bladder 112 with an inert gas.
It will be appreciated that the weighing assembly 130 is provided with a baffle 131, a load cell 132 and a lifting mechanism 133. Wherein, baffle 131 sets up in the outer wall of stock solution energy storage 110 and is close to one side at top, and elevating system 133 can set up in the bottom of stock solution energy storage 110, is provided with weighing sensor 132 between baffle 131 and the stock solution energy storage 110, and operating elevating system 133 can jack up stock solution energy storage 110 through the cooperation of weighing sensor 132 and baffle 131 for the weight of stock solution energy storage 110 is whole to be acted on weighing sensor 132, in order to guarantee that the weighing result is more accurate.
Illustratively, the lifting mechanism 133 may be a jack provided with a pedal, and the jack may be controlled to lift the accumulator 110 by operating the pedal before delivering oil to the accumulator 110. The jack can select hydraulic pressure or atmospheric pressure as power, after the measurement is finished, can be with the jack pressure release for stock solution energy storage 110 is placed on the support of base, in order to avoid weighing sensor 132 to last to support stock solution energy storage 110, leads to weighing sensor 132 impaired, influences follow-up measurement precision.
In some examples, as shown in fig. 1, a plurality of the liquid storage accumulators 110 are provided, each of the liquid storage accumulators 110 is correspondingly provided with the valve assembly 120, and the plurality of liquid storage accumulators 110 are used for being connected in parallel to the oil well; wherein, in the case that one of the liquid storage reservoirs 110 is in a weighing state, the oil enters the liquid storage chamber 111 of at least one of the liquid storage reservoirs 110.
It can be appreciated that the plurality of liquid storage accumulators 110 can be provided, and the plurality of liquid storage accumulators 110 are respectively provided with the valve assemblies 120 correspondingly, and the plurality of liquid storage accumulators 110 are connected in parallel to the oil well, so that the oil produced by the oil well can be conveyed to the corresponding liquid storage accumulators 110 by adjusting the valve assemblies 120 without interference. By providing a plurality of liquid storage reservoirs 110, the oil well can be used for delivering oil to one liquid storage reservoir 110 while weighing the other liquid storage reservoir 110, so that the oil in the liquid storage cavity 111 of the liquid storage reservoir 110 reaches the preset weight. Thus, the plurality of liquid storage accumulators 110 can be weighed alternately to realize continuous measurement of the liquid production amount of the oil well in the sampling time period, and the interval is reduced, so that the measurement result is more accurate, and the method is particularly suitable for the condition that the sampling time period is longer.
It can be appreciated that the pipelines of the adjacent liquid storage accumulators 110 can be connected through four-way joints, so that the structure is simplified, the number of pipelines is reduced, the space is reasonably arranged, and the material cost is saved.
Illustratively, the accumulator 110 is provided with two, including a first accumulator 1101 and a second accumulator 1102. When the oil in the reservoir 111 of the first reservoir 1101 reaches a preset weight to be weighed, the valve assembly 120 of the second reservoir 1102 is in the first state, and the oil well can deliver oil to the reservoir 111 of the second reservoir 1102. Under the condition that the second liquid storage accumulator 1102 is in a liquid inlet state, after the first liquid storage accumulator 1101 is stable for a period of time, the whole weight of the first liquid storage accumulator 1101 is weighed by the weighing assembly 130, so as to obtain G 1 total of And then make the firstThe valve assembly 120 corresponding to the first liquid storage accumulator 1101 is in the second state, so that the oil in the first liquid storage accumulator 1101 is discharged, and after the liquid discharge is completed and the liquid storage accumulator is kept stand for a period of time, the weighing assembly 130 is used for weighing the first liquid storage accumulator 1101 at the moment, so as to obtain G 1 empty The weight G of the liquid discharged from the first liquid storage 1101 1 ＝G 1 total of -G 1 empty . At this time, the oil in the liquid storage chamber 111 of the second liquid storage device 1102 reaches a preset weight, and is ready for weighing. The valve of the first accumulator 1101 is adjusted to the second state and the well delivers oil to the reservoir 111 of the first accumulator 1101. With this circulation, an alternating continuous metering of the first liquid storage tank 1101 and the second liquid storage tank 1102 is achieved. Similarly, the weight G of the liquid discharged from the second liquid storage device 1102 2 ＝G 2 total -G 2 Empty. The total liquid measured in one metering cycle is G 1 +G 2 . And the total liquid amount obtained by a plurality of metering cycles is added to obtain the total liquid amount value in the sampling time period of the oil well, so that the metering precision is high.
In some examples, as shown in fig. 1, a plurality of the baffles 131 are provided, the plurality of baffles 131 are spaced along the circumference of the liquid storage tank 110, and the number of the weighing sensors 132 corresponds to the number of the baffles 131; the plurality of load cells 132 are connected to the lifting mechanism 133.
It is understood that a plurality of baffles 131 may be provided, and that a plurality of baffles 131 are spaced apart along the circumference of the accumulator 110, with adjacent accumulators 110 being equally spaced apart. The number of the weighing sensors 132 corresponds to the number of the baffles 131, so that each baffle 131 can be matched with one weighing sensor 132 to jack up the liquid storage energy accumulator 110. So that each weighing sensor 132 is uniformly stressed, the metering precision is improved, and the influence on the service life caused by larger stress of part of weighing sensors 132 is avoided. And a plurality of weighing sensors 132 are all connected in lifting mechanism 133 to when making operating lifting mechanism 133, can jack up all weighing sensors 132 simultaneously, further guarantee that every weighing sensor 132 atress is even, improve the reliability.
For example, three baffles 131 may be provided, the included angle between adjacent baffles 131 is 120 °, and three weighing sensors 132 are simultaneously provided, where the sum of the readings of the three weighing sensors 132 is the weight of the liquid storage 110. So set up, after jack-up stock solution energy storage 110, restricted stock solution energy storage 110's degree of freedom, reduced stock solution energy storage 110's rocking, improve stability, and need not to set up more baffle 131 and weighing sensor 132, reduce cost is favorable to actual use.
In some examples, as shown in fig. 1, the valve assembly 120 is connected to the reservoir 110 by a pipeline, the pipeline includes a fluid inlet pipe 151 and a fluid outlet pipe 152, the fluid inlet pipe 151 is used to connect to the oil well and the reservoir 110, and the fluid outlet pipe 152 is connected to the reservoir 110; the valve assembly 120 includes: a liquid inlet valve, a liquid outlet valve and a safety valve 123, wherein the liquid inlet valve is disposed on the liquid inlet pipe 151, the liquid outlet valve is disposed on the liquid outlet pipe 152, and the safety valve 123 is disposed between the liquid inlet pipe 151 and the liquid outlet pipe 152.
It will be appreciated that the valve assembly 120 is connected to the reservoir 110 by a conduit provided with a feed conduit 151 and a discharge conduit 152. Wherein, feed liquor pipe 151 connects in oil well and stock solution energy storage 110, and the oil well is reliable self pressure with fluid delivery to stock solution energy storage 110, need not additionally to set up power device, and the structure is simplified, reduce cost. The drain pipe 152 is connected to the accumulator 110, and is used for draining oil in the accumulator 110. The valve assembly 120 is provided with a feed valve, a discharge valve and a relief valve 123. Wherein, the feed liquor valve sets up in feed liquor pipe 151, and the drain valve sets up in drain pipe 152. In the case where the valve assembly 120 is in the first state, the liquid inlet valve is closed and the liquid outlet valve is opened; with the valve assembly 120 in the second state, the inlet valve is open and the outlet valve is closed. And a safety valve 123 is arranged between the liquid inlet pipe 151 and the liquid outlet pipe 152 to ensure the safety of conveying.
Illustratively, where first and second reservoirs 1101, 1102 are provided, the valve assembly is provided with first and second inlet valves 121, 124, first and second outlet valves 122, 125. Wherein, the firstA liquid inlet valve 121 is disposed in the liquid inlet pipe 151, a first liquid outlet valve 122 is disposed in the liquid outlet pipe 152, and the first liquid inlet valve 121 and the first liquid outlet valve 122 control the oil to enter and exit the first liquid storage 1101. The second liquid inlet valve 124 is disposed in the liquid inlet pipe 151, the second liquid outlet valve 125 is disposed in the liquid outlet pipe 152, and the second liquid inlet valve 124 and the second liquid outlet valve 125 control the oil to enter and exit the second liquid storage 1102. And the first liquid inlet valve 121 and the second liquid inlet valve 124 are connected through a four-way joint, the first liquid outlet valve 122 and the second liquid outlet valve 125 are connected through a four-way joint, and a safety valve 123 is arranged on a pipeline between the two four-way joints. In the weighing operation, the first liquid inlet valve 121 is opened, and the first liquid outlet valve 122, the second liquid inlet valve 124 and the second liquid outlet valve 125 are closed. The oil enters the liquid storage cavity 111 of the first energy storage liquid storage device 1101 through the liquid inlet pipe 151 and the first liquid inlet valve 121, when the oil in the liquid storage cavity 111 of the first liquid storage device 1101 reaches a preset weight to be weighed, the first liquid inlet valve 121 is closed, the second liquid inlet valve 124 is opened, and the second liquid inlet valve 124 and the first liquid outlet valve 122 are kept in a closed state. The oil enters the liquid storage cavity 111 of the second energy storage liquid storage device 1102 through the liquid inlet pipe 151 and the second liquid inlet valve 124. During the liquid feeding process of the second energy storage liquid storage device 1102, after the first energy storage liquid storage device 1101 is stable for a period of time, the whole weight of the first energy storage device 1101 is weighed by the weighing assembly 130, so as to obtain G 1 total of Then the first liquid outlet valve 122 is opened, the oil in the liquid storage cavity 111 of the first liquid storage accumulator 1101 is discharged under the action of the elastic energy of the air bag 112, after the liquid discharge is finished and the liquid storage is kept stand for a period of time, the weighing assembly 130 is used for weighing the first liquid storage accumulator 1101 at the moment, and G is obtained 1 empty The weight G of the liquid discharged from the first liquid storage 1101 1 ＝G 1 total of -G 1 empty . At this time, the oil in the liquid storage chamber 111 of the second liquid storage device 1102 reaches a preset weight, and is ready for weighing. At this time, the first liquid inlet valve 121 is opened again, the first liquid outlet valve 122 is closed, and the oil enters the liquid storage cavity 111 of the first energy storage liquid reservoir 1101 again through the liquid inlet pipe 151 and the first liquid inlet valve 121. After the second energy storage liquid storage device 1102 is stabilized for a period of time, the second liquid storage device is subjected to the weighing assembly 130The total weight of the accumulator 1102 is weighed to obtain G 2 total Then the second liquid outlet valve 125 is opened, the oil in the liquid storage cavity 111 of the second liquid storage accumulator 1102 is discharged under the action of the elastic energy of the air bag 112, after the liquid discharge is finished and the liquid storage is kept stand for a period of time, the weighing assembly 130 is used for weighing the second liquid storage accumulator 1102 at the moment, and G is obtained 2 empty The weight G of the liquid discharged from the second liquid storage device 1102 2 ＝G 2 total -G 2 empty 。G 1 And G 2 And the sum is the total liquid quantity value of one cycle, the process is repeated, and the total liquid quantity value of the oil well in the preset time can be obtained by adding the weights obtained by each cycle.
In some examples, as shown in fig. 1, the above metering device further includes: a joint assembly including a first joint 161, a second joint 162, and a weighing connection joint 163, wherein the first joint 161 is disposed at one end of the intake pipe 151 near the oil well; the second connector 162 is disposed at an end of the liquid outlet pipe 152 away from the liquid storage 110; the weighing connecting joint is arranged on the weighing connecting pipe, so that the weighing connecting pipe is at least provided with at least three degrees of freedom, and the weighing connecting joint is positioned between the liquid inlet valve and the liquid outlet valve.
It will be appreciated that the metering device is also provided with a fitting assembly to improve the reliability of the pipe connection. Specifically, the joint assembly is provided with a first joint 161, a second joint 162 and a weighing connection joint 163, wherein the first joint 161 is disposed at one end of the liquid inlet pipe 151 close to the oil well, so as to improve the connection reliability of the liquid outlet pipe 152 and the liquid inlet pipe 151 of the oil well. The second connector 162 is disposed at an end of the liquid outlet pipe 152 away from the liquid storage 110 to improve the liquid discharging stability. The weighing connection joint 163 is connected to the liquid storage 110, and when the liquid inlet valve is opened and the liquid outlet valve is closed, the oil can enter the liquid storage 110 along the weighing connection pipe 134. When the liquid inlet valve is closed and the liquid outlet valve is opened, the oil in the liquid storage 110 can be conveyed to the liquid outlet pipe 152 along the weighing connection pipe 134.
The weighing connection joint 163 enables the weighing connection pipe 134 to be formed with at least three degrees of freedom, so that the weighing connection pipe 134 can still acquire real, effective, accurate and stable weighing measurement data under the interference of pulsation impact force, pressure, tension and the like of oil. Illustratively, the weighing connection adapter 163 may be serially connected with three rotary connectors 1631 to provide three degrees of freedom for the weighing connection tube 134, and to eliminate disturbances such as pulsating impact forces, pressure and tension by rotation of the rotary connectors 1631. Or the weighing connection tabs 163 may alternatively be spherical to provide multiple degrees of freedom.
Illustratively, the first connector 161 and the second connector 162 may be selected from self-closing quick connectors to improve connector installation and removal efficiency.
Specifically, when metering operation is started, the liquid inlet valve is opened, the liquid outlet valve is closed, oil in an oil well enters the liquid inlet valve through a pipeline, enters the weighing connecting pipe 134 through the liquid inlet valve, sequentially passes through the three rotary joints 1631 and then enters the liquid storage cavity 111, and as the oil in the liquid storage cavity 111 increases, the air bag 112 is compressed, the volume of the air bag 112 is reduced, the pressure is increased, and the elastic energy is increased. After the oil in the liquid storage cavity 111 reaches the preset weight, the oil is weighed to obtain the actual weight of the oil. After weighing, the liquid outlet valve is opened, oil in the liquid storage cavity enters the weighing connecting pipe 134 from the three rotary joints 1631 under the action of the rebound force of the air bag, and enters the oil delivery pipeline of the oil well from the outlet pipeline.
In some examples, as shown in fig. 1, the inflation assembly described above includes: a gas source; a first air charging pipe 141 connected to the air source and communicated with the liquid storage cavity 111 for charging air into the liquid storage cavity 111; a second inflation tube 142 connected to the air supply and communicating with the air bladder 112.
It will be appreciated that the inflation assembly is provided with a gas source, a first inflation tube 141 and a second inflation tube 142. Wherein, the air source can be an air storage tank, and inert gas can be stored in the air source. The second inflation tube 142 is connected to the air source and is communicated with the air bag 112, and inert gas is filled into the air bag 112 through the second inflation tube 142 so as to expand the air bag 112, and the air bag has elastic potential energy and is used for subsequent weighing and cleaning operations.
The first inflation tube 141 is connected to an air source and is communicated with the liquid storage cavity 111, and under the condition that both the liquid inlet valve and the liquid outlet valve are closed, inert gas is conveyed to the liquid storage cavity 111 through the first inflation tube 141, so that the inert gas is conveyed into the liquid storage cavity 111. Specifically, during cleaning operation, inert gas is filled into the liquid storage chamber 111, and the inert gas compresses the air bag 112 to increase the pressure in the air bag 112. After the gas is filled to reach the preset quantity, the liquid outlet valve and the liquid inlet valve are opened, and the high-pressure inert gas in the liquid storage cavity 111 discharges residual oil from the liquid inlet pipe and the liquid outlet pipe under the rebound action of the air bag 112, so that the cleaning work is completed. The liquid storage cavity 111 and the residual oil in the pipeline are prevented from solidifying and scaling, the subsequent metering precision is affected, the reliability is improved, the cleaning cost is low, and the use is convenient.
In some examples, as shown in fig. 1, the above metering device further includes: the pressure adjusting assembly 170 is disposed in at least one of the first gas tube 141, the second gas tube 142, the liquid inlet tube 151 and the liquid outlet tube 152.
It is understood that the metering device is further provided with a pressure adjusting assembly 170, and the pressure adjusting assembly 170 is disposed on the first air tube 141, the second air tube 142, the liquid inlet tube 151 and the liquid outlet tube 152 to adjust the pressure in the pipeline. When the pressure is too high, part of the pressure can be released, and after the metering is finished, the whole pressure adjusting assembly 170 is opened for pressure relief in the cleaning stage, so that the liquid inlet pipe 151 and the liquid outlet pipe 152 can be safely retracted and stored.
In some examples, as shown in fig. 1, the pressure adjustment assembly 170 includes: a pressure sensor 171; a pressure relief valve 172; and a controller connected to the pressure sensor 171 and the pressure release valve 172, respectively, for adjusting the state of the pressure release valve 172 according to the pressure data sent from the pressure sensor 171.
It is understood that the pressure adjustment assembly 170 is provided with a pressure sensor 171, a pressure relief valve 172, and a controller. The pressure sensor 171 is configured to detect pressure data of the pressure adjusting assembly 170, and send the pressure data to the controller, and the controller adjusts the state of the pressure release valve 172 according to the pressure data. Specifically, in the case that the pressure value of the pressure data is greater than the preset pressure value, the pressure relief valve 172 is adjusted to be opened to release part of the pressure until the pressure value is less than or equal to the preset pressure value, and then the pressure relief valve 172 is adjusted to be closed.
In some examples, as shown in fig. 1, the above metering device further includes: a first pipe recoverer 181 provided in the liquid inlet pipe 151; the second pipe recoverer 182 is disposed in the liquid outlet pipe 152.
It will be appreciated that the metering device is also provided with a first conduit retriever 181 and a second conduit retriever 182. The first pipe recoverer 181 is disposed at the liquid inlet pipe 151, the second pipe recoverer 182 is disposed at the liquid outlet pipe 152, and after the cleaning operation is completed, the liquid inlet pipe 151 can be retracted into the first pipe recoverer 181, and the liquid outlet pipe 152 can be retracted into the second pipe recoverer 182, so that the cleaning and storage are facilitated.
The metering device can be provided with a processor, and can realize automatic metering and cleaning operation through the processor, so that the degree of automation is improved, human intervention is reduced, the metering precision is improved, and the labor cost is reduced.
An embodiment according to a second aspect of the present application proposes a method for metering the production of an oil well, for a metering device according to any one of the above technical solutions, comprising: acquiring the gas content of oil liquid; under the condition that the air content is less than 50%, conveying oil to the liquid storage cavity until the oil in the liquid storage cavity reaches a preset weight, and weighing the oil in the liquid storage cavity to obtain the actual weight of the oil in the liquid storage cavity; and under the condition that the air content is greater than or equal to 50%, conveying oil to the liquid storage cavity until the oil in the liquid storage cavity reaches the preset pressure, and weighing the oil in the liquid storage cavity to obtain the actual weight of the oil in the liquid storage cavity.
It may be appreciated that the oil in the oil well may be obtained before metering, the gas content of the oil may be determined, and when the gas content is less than 50%, the adjusting assembly may be adjusted to the first state after the oil in the liquid storage cavity 111 reaches the preset weight, so as to stop delivering the oil to the liquid storage cavity 111, the oil in the liquid storage cavity 111 applies pressure to the air bag 112, and the air bag 112 maintains the compressed state. At this time, the accumulator 110 is weighed as a whole to obtain the total actual weight of the accumulator 110 and the oil therein. And then the valve assembly 120 is adjusted to a second state, so that the liquid storage cavity 111 is communicated with the pipeline, the air bag 112 rebounds to discharge the oil in the liquid storage cavity 111, after the oil is discharged and is stabilized, the liquid storage energy accumulator 110 for emptying the oil is weighed again through the weighing assembly 130, and the actual weight of the oil in the liquid storage cavity 111 can be obtained through calculation. The metering device has simple integral structure and is convenient to use and maintain. After metering, the air charging assembly may charge air into the liquid storage chamber 111 to clean the residual oil in the liquid storage chamber 111. Specifically, valve assembly 120 is closed, gas is filled into liquid storage cavity 111 through the inflation assembly to compress air bag 112, valve assembly 120 is adjusted afterwards for liquid storage cavity 111 and pipeline switch on, and air bag 112 kick-backs so that the gas in liquid storage cavity 111 carries residual oil to be discharged, thereby plays the effect of clearance, avoids liquid storage cavity 111 and the inner wall department of pipeline residual oil to solidify the scale deposit, guarantees follow-up measurement precision, improves the reliability.
Under the condition that the gas content of the oil liquid is detected to be greater than or equal to 50%, the fact that the oil liquid contains a large amount of gas is indicated that the gas can enable the pressure of the air bag 112 to rise more, the load of the underground oil extraction pump is increased, normal use of equipment is affected, and metering accuracy is lowered. Therefore, constant pressure metering of oil is required. When the oil pressure in the liquid storage cavity 111 reaches the preset pressure, the oil in the liquid storage cavity 111 is weighed to obtain the actual weight of the oil in the liquid storage cavity 111, and the applicability is improved and the metering precision is improved by pertinently metering the oil according to the gas content of the oil. The preset pressure ranges from 0.3MPa to 3MPa, and can be exemplified by 0.6MPa, 0.8MPa, 1.0MPa, 1.2MPa, 1.4MPa and 1.6MPa.
Illustratively, the rate at which the bladder is compressed is monitored, and if the rate at which the bladder is compressed is greater than a predetermined rate, the gas content of the oil is predicted to be greater than or equal to 50%, otherwise the gas content of the oil is predicted to be less than 50%.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "rear", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or units referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A metering device, comprising:
the device comprises a liquid storage energy accumulator, wherein a liquid storage cavity and an air bag are arranged in the liquid storage energy accumulator, and the liquid storage cavity is used for storing oil liquid produced by an oil well;
a valve assembly for adjusting the flow rate of the oil delivered to the reservoir and/or for adjusting the flow rate of the oil output from the reservoir;
the weighing connecting pipes are respectively connected with the valve assembly and the liquid storage cavity;
the subassembly of weighing is used for weighing to stock solution energy storage, the subassembly of weighing includes: the baffle is arranged on the outer wall of the liquid storage energy accumulator and used for participating in weighing the liquid storage energy accumulator;
the weighing sensor is connected with the baffle plate at one end;
the other end of the weighing sensor is connected with the lifting mechanism;
an inflation assembly for inflating gas into the airbag;
under the condition that the oil in the liquid storage cavity reaches the preset weight, the valve assembly is adjusted to a first state, the air bag is kept in a compressed state, and the whole liquid storage energy accumulator is weighed to obtain the total actual weight of the liquid storage energy accumulator and the oil in the liquid storage energy accumulator; under the condition that the oil in the liquid storage cavity is weighed, the valve assembly is adjusted to a second state, the air bag rebounds by utilizing elastic potential energy, gas in the liquid storage cavity is extruded to push the oil to be discharged from the liquid storage cavity, after the oil is discharged and is stabilized, the liquid storage energy accumulator for emptying the oil is weighed again through the weighing assembly, and the actual weight of the oil in the liquid storage cavity is calculated according to twice weighing.
2. A metering device as claimed in claim 1, wherein,
the plurality of liquid storage energy storages are arranged, each liquid storage energy storage is correspondingly provided with the valve component, and the plurality of liquid storage energy storages are used for being connected in parallel with the oil well;
and under the condition that one of the liquid storage energy storages is in weighing, oil enters the liquid storage cavity of at least one liquid storage energy storage.
3. A metering device as claimed in claim 1, wherein,
the plurality of baffles are arranged, the plurality of baffles are distributed at intervals along the periphery of the liquid storage energy accumulator, and the number of the weighing sensors corresponds to the number of the baffles;
and the weighing sensors are connected to the lifting mechanism.
4. A metering device as claimed in claim 1, wherein,
the valve assembly is connected to the liquid storage energy accumulator through a pipeline, the pipeline comprises a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is used for being connected to the oil well and the liquid storage energy accumulator, and the liquid outlet pipe is connected to the liquid storage energy accumulator;
the valve assembly includes: the liquid inlet valve is arranged on the liquid inlet pipe, the liquid outlet valve is arranged on the liquid outlet pipe, and the safety valve is arranged between the liquid inlet pipe and the liquid outlet pipe.
5. The metering device of claim 4, further comprising:
the joint assembly comprises a weighing connecting joint, a first joint and a second joint, wherein the weighing connecting joint is arranged on the weighing connecting pipe, so that the weighing connecting pipe is at least provided with at least three degrees of freedom, and the weighing connecting joint is positioned between the liquid inlet valve and the liquid outlet valve;
the first joint is arranged at one end of the liquid inlet pipe, which is close to the oil well;
the second connector is arranged at one end of the liquid outlet pipe far away from the liquid storage energy accumulator; the first connector and the second connector are self-closing quick connectors.
6. The metering device of claim 4, wherein the inflation assembly comprises:
a gas source;
the first inflation tube is connected with the air source, communicated with the liquid storage cavity and used for inflating air into the liquid storage cavity;
the second inflation tube is connected with the air source and communicated with the air bag.
7. A metering device as claimed in claim 6 further comprising:
the pressure adjusting assembly is arranged on at least one of the first air charging pipe, the second air charging pipe, the liquid inlet pipe and the liquid outlet pipe.
8. The metering device of claim 7, wherein the pressure adjusting assembly comprises:
a pressure sensor;
a pressure release valve;
and the controller is respectively connected with the pressure sensor and the pressure relief valve and is used for adjusting the state of the pressure relief valve according to the pressure data sent by the pressure sensor.
9. The metering device of claim 4, further comprising:
the first catheter recoverer is arranged on the liquid inlet pipe;
the second conduit recoverer is arranged on the liquid outlet pipe.
10. A method of well production metering for a metering device according to any one of claims 1 to 9, comprising:
acquiring the gas content of oil liquid;
under the condition that the air content is less than 50%, conveying oil to the liquid storage cavity until the oil in the liquid storage cavity reaches the preset weight, and weighing the oil in the liquid storage cavity to obtain the actual weight of the oil in the liquid storage cavity; and under the condition that the gas content is greater than or equal to 50%, conveying oil to the liquid storage cavity until the oil in the liquid storage cavity reaches the preset pressure, and weighing the oil in the liquid storage cavity to obtain the actual weight of the oil in the liquid storage cavity.
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