CN203214053U - Measuring device for measuring phase flow in downhole multiple phase flows - Google Patents
Measuring device for measuring phase flow in downhole multiple phase flows Download PDFInfo
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- CN203214053U CN203214053U CN 201320007210 CN201320007210U CN203214053U CN 203214053 U CN203214053 U CN 203214053U CN 201320007210 CN201320007210 CN 201320007210 CN 201320007210 U CN201320007210 U CN 201320007210U CN 203214053 U CN203214053 U CN 203214053U
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Abstract
The utility model relates to a measuring device for measuring phase flow in downhole multiple phase flows. The measuring device comprises a pulling cylinder, a throttling device, a gamma ray phase fraction meter, a first optical cable or a first electric cable, a first optical fiber sensor, a second optical fiber sensor, a second optical cable, an optical fiber sensing analysis meter, a signal line and a data processing unit, wherein the throttling device is arranged in the pulling cylinder and is provided with at least one circulation cross section narrowing down compared with the pulling cylinder; the gamma ray phase fraction meter is arranged in the pulling cylinder and located on the upstream or the downstream of the throttling device; the first optical cable or the first electric cable is used for transmitting signals of the gamma ray phase fraction meter to the data processing unit; the first optical fiber sensor is used for measuring the temperature and pressure of the multiple phase flows on the upstream of the throttling device; the second optical fiber sensor is used for measuring the temperature and pressure of the multiple phase flows located on the narrowest circulation cross section of the throttling device; the second optical cable is used for transmitting signals of the first optical fiber sensor and signals of the second optical fiber to the optical fiber sensing analysis meter.
Description
Technical Field
The utility model relates to a heterogeneous class measuring device technical field, especially the continuous real-time measuring device of heterogeneous class each phase flow and phase fraction rate in pit.
Background
The underground flow of the oil well is monitored, so that the production condition of the oil well can be better mastered, and the oil deposit management of the oil well is optimized. In the oil recovery industry, gas-liquid mixed fluids containing a liquid phase and a gas phase are often produced from oil wells. It is essentially a multiphase flow, i.e. a fluid mixture of at least two phases. Wherein the gas phase comprises, for example, oil field gas or any gas that is non-condensable at ambient temperatures. The liquid phase may include: oil phases, such as crude oil itself and liquid additives dissolved in the crude oil during its extraction, and water phases, such as formation water, water injected into the well during extraction, and other liquid additives dissolved in the water phase. The oil phase and the aqueous phase are present as separate phases or in an emulsified form.
At present, a multiphase flow measurement mode commonly adopted on the ground is realized by combining a throttling type measuring device and a gamma ray phase fraction meter. The gamma ray phase fraction meter can give the mixed density and phase fraction of the multiphase flow, the throttling type measuring device can give the total flow, and then the gas flow, the oil flow and the water flow in the multiphase flow are obtained through the total flow and the phase fraction. However, the space under the well is limited, and the multiphase flow measuring device used on the ground is large in size and cannot be directly applied to measurement of the multiphase flow under the well because the multiphase flow measuring device usually faces a complex environment with high temperature and high pressure. Therefore, currently, the downhole flow is measured by adopting methods such as a turbine flowmeter, a downhole doppler flowmeter and the like of single-phase flow measuring equipment. The former obtains the flow of the downhole fluid by calculating the rotating speed of the turbine, and the latter utilizes the ultrasonic wave to measure the flow in the fluid by the positive and negative speed difference. Compared with the surface measurement, the flow rate of each phase in the multiphase flow cannot be provided because the phase fraction measurement is not carried out, thereby influencing the measurement precision and effect of the multiphase flow.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can measure the downhole measurement device of each phase flow in heterogeneous stream under the condition of narrow space in pit, what adopt is that the mode that throttle device (for example venturi, nozzle, interior awl, or orifice plate etc.) and gamma ray phase fraction meter combined phase place, wherein gamma ray phase fraction meter places along heterogeneous stream's flow direction to adapt to narrow and small space in the pit. The total flow of the multiphase flow is measured by using a throttling device and a gamma-ray phase-fraction meter, and the pressure difference generated by the fluid flowing through the throttling device, the mixing density of the fluid and the temperature of the fluid need to be known. Because the space under the well is limited, in order to obtain the pressure and temperature information of the multiphase flow flowing through the throttling device under the well, the device adopts an optical fiber sensing technology, such as a technology of measuring temperature and pressure by applying an optical fiber grating structure or an optical fiber Fabry-Perot cavity structure.
Accordingly, a first aspect of the present invention provides a measuring device for measuring the flow rate of each phase in a multiphase flow downhole, comprising:
a mop cylinder (1);
a throttling device (2) arranged in the dragging cylinder (1); the throttle element (2) has at least one flow cross section which is narrower than the mop cylinder (1);
a gamma-ray phase fraction meter (3) arranged in the towing cylinder (1) and positioned at the upstream or downstream of the throttling device (2) and used for measuring the phase fraction of each phase in the multiphase flow and measuring the mixed density;
a first optical or electrical cable (6) for transmitting the signals of the gamma-ray phase fraction meter (3) to a data processing unit (11);
a first fibre-optic sensor (7) for measuring the temperature and pressure of the multiphase flow upstream of the throttling device (2);
a second fiber optic sensor (8) for measuring temperature and pressure of the multiphase flow at the narrowest flow cross section of the throttling device (2);
a second optical cable (9) for transmitting signals of the first optical fiber sensor (7) and the second optical fiber sensor (8) to an optical fiber sensing analyzer (10);
a fiber sensing analyzer (10) for analyzing and processing signals from the first fiber sensor (7) and the second fiber sensor (8);
a signal line (12) for transmitting an output signal of the optical fiber sensing analyzer (10) to the data processing unit (11);
and the data processing unit (11) is used for processing signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow.
The utility model discloses can also realize with other modes, consequently, the utility model discloses a second aspect provides a measuring device for measuring each looks flow in heterogeneous class of flow in pit, include:
a mop cylinder (1);
a throttling device (2) arranged in the dragging cylinder (1); the throttle element (2) has at least one flow cross section which is narrower than the mop cylinder (1);
a gamma-ray phase fraction meter (3) arranged in the towing cylinder (1) and positioned at the upstream or downstream of the throttling device (2) and used for measuring the phase fraction of each phase in the multiphase flow and measuring the mixed density;
a first optical or electrical cable (6) for transmitting the signals of the gamma-ray phase fraction meter (3) to a data processing unit (11);
a pressure-inducing device (13) for inducing the pressure of the multiphase flow upstream of the throttling means (2) and at the narrowest flow cross-section of the throttling means (2) to both sides of an elastic element (14) and creating a pressure difference between the two sides;
an elastic element (14) that is strained by deformation that occurs under the action of the pressure difference;
a third optical fiber sensor (15) for measuring the temperature of the elastic element (14) and detecting the strain of the elastic element (14) under the action of the pressure difference;
an optional fourth fibre-optic sensor (16) for measuring the temperature of the multiphase flow upstream of the throttling device (2);
a second optical cable (9) for transmitting the signals of the third optical fiber sensor (15) and optionally the fourth optical fiber sensor (16) to the optical fiber sensing analyzer (10);
a fibre-optic sensing analyser (10) for analysing and processing the signal from the third fibre-optic sensor (15) and optionally the signal from the fourth fibre-optic sensor (16);
a signal line (12) for transmitting an output signal of the optical fiber sensing analyzer (10) to the data processing unit (11);
and the data processing unit (11) is used for processing the signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow.
Drawings
The drawings are only for purposes of illustrating the structures and principles of the invention and are not to be construed as limiting the scope of the invention in any way.
The structure of the device is shown in figure 1. Wherein the reference symbols have the following meanings:
(1): dragging the cylinder; (2): a throttling device; (3): a gamma ray phase fraction meter; (4): a gamma-ray source; (5): a gamma ray detector; (6): a first optical cable or a first electrical cable; (7): a first fiber optic sensor; (8): a second optical fiber sensor; (9): a second optical cable; (10): an optical fiber sensing analyzer; (11): a data processing unit; (12): and a signal line.
Another schematic of the structure of the device is shown in fig. 2. Wherein the reference symbols have the following meanings:
(1): dragging the cylinder; (2): a throttling device; (3): a gamma ray phase fraction meter; (4): a gamma-ray source; (5): a gamma ray detector; (6): a first optical cable or a first electrical cable; (13): a pressure-leading device; (14): an elastic element; (15): a third optical fiber sensor; (16): a fourth optical fiber sensor; (9): a second optical cable; (10): an optical fiber sensing analyzer; (11): a data processing unit; (12): and a signal line.
Detailed Description
The following will describe the components and their combination in the measuring device of the present invention with reference to the schematic structural diagrams of the present device shown in fig. 1 and 2.
The mop cartridge (1) is a hollow cartridge, which may have any shape, preferably a cylindrical shape. When the underground multiphase flow measuring device works, the dragging cylinder (1) is placed into the underground, and the multiphase flow at different positions in the underground can be measured in real time by pulling the dragging cylinder (1).
The throttling means (2) is any means capable of creating a throttling effect, such as, but not limited to, a venturi, a nozzle, an inner cone or an orifice plate. The specific construction of the venturi, nozzle, cone or orifice like throttling means is well known to those skilled in the art and can be seen in any product specification or hydromechanical textbook. The throttling effect is to cause the fluid to flow through a passage with a gradually decreasing cross-section. The throttle element (2) has at least one flow cross section which is narrowed in comparison with the mop cylinder (1) in order to produce a throttling effect. A pressure tapping (hereinafter referred to as second measuring point) is usually provided at the narrowest point of the flow cross-section of the throttling element, in order to measure the pressure of the fluid throttled to the greatest extent there. A further pressure pick-up port (hereinafter referred to as a first measurement point) is also typically provided in the drag cylinder upstream of the throttling device (2) where no throttling effect occurs to measure the pressure of the fluid before the throttling effect occurs. The first measuring point is located, for example, immediately before the inlet of the throttle element (2). The throttle element (2) is to be placed in the mop cylinder (1).
The gamma-ray phase-fraction meter (3) is any conventional gamma-ray phase-fraction meter in the field of multiphase flow measurement, and is used for measuring the phase fraction (such as gas void ratio GVF and water content WLR) of each phase in the multiphase flow and calculating the mixing density (rho mix) of the multiphase flow. Wherein gas fraction refers to the volume percentage occupied by the gas phase relative to the total volume of the multiphase flow. The water cut WLR refers to the volume percentage of the multiphase flow in which the aqueous phase occupies relative to the volume of the liquid phase.
The gamma-ray phase fraction meter (3) generally comprises a gamma-ray source (4) and a gamma-ray detector (5). The gamma-ray phase fraction meter (3) may be located upstream or downstream, preferably downstream, of the throttling device (2). In a gamma-ray phase-fraction meter used on the ground, a gamma-ray source and a gamma-ray detector are generally located on both sides of the exterior of a multiphase flow pipe through which gamma rays emitted from the gamma-ray source pass to reach the gamma-ray detector, generating a signal. In the utility model, the gamma ray radioactive source (4) and the gamma ray detector (5) are arranged in the dragging cylinder (1) along the flowing direction of the multiphase flow in an upper-lower stream relation or a lower-upper stream mode, namely, the gamma ray radioactive source and the gamma ray detector are immersed in the multiphase flow. The gamma ray detector (5) may be composed of a fluorescent crystal (e.g., NaI (T1) crystal) and a light guide, or may be composed of a fluorescent crystal and a photomultiplier tube (PMT). If the gamma ray detector (5) consists of a fluorescent crystal and a light guide device, the gamma ray detector (5) receives gamma rays emitted by the gamma ray radiation source (4), converts the gamma rays into fluorescent signals through the fluorescent crystal, and transmits the fluorescent signals into the first optical cable (6) through the light guide device and transmits the fluorescent signals to the photoelectric conversion module of the ground data processing unit (11). And if the gamma ray detector (5) consists of a fluorescent crystal and a photomultiplier, the gamma ray detector (5) receives gamma rays of the gamma ray radiation source (4), converts the gamma rays into fluorescent signals through the fluorescent crystal, the fluorescent signals directly enter the photomultiplier next to the fluorescent crystal and are amplified into electric signals through photoelectricity, and then the electric signals are transmitted to the electric signal acquisition module of the data processing unit (11) through the first cable (6). This kind of arrangement makes the utility model discloses a layout is compacter, more adapts to and measures in narrow space in the pit. The first cable or cable (6) is preferably an armored cable or cable in order to accommodate high temperature, high pressure and corrosive environments downhole.
A first fibre optic sensor (7) is located upstream of the throttling device (2) at or near a location where no throttling effect occurs to measure the temperature and pressure of the multiphase flow flowing therethrough. A second fibre optic sensor (8) is located at or near the narrowest flow-through cross-section of the throttling device (2) to measure the temperature and pressure of the multiphase flow flowing therethrough. The first optical fiber sensor (7) and the second optical fiber sensor (8) can adopt any structure suitable for measuring temperature and pressure in the field of optical fiber sensing, such as an optical fiber grating structure or an optical fiber Fabry-Perot cavity structure. This is well known to the skilled person. The technology of using fiber optic sensors to measure downhole temperature and pressure can be found in the following documents:
1. application and development of permanent optical fiber sensor for oil and gas well, Jiabuwein, Xiaozhi, Zhang Zhong, geophysical development, 2004, Vol 19(3), 515-
2. Research and application of the fiber grating sensing technology in the petroleum industry, Xuming, Sun Yan Hui, China shipbuilding, 2011, volume 52(A2), 465-one 469.
The fiber sensing analyzer (10) is used for analyzing and processing signals from the first fiber sensor (7) and the second fiber sensor (8), for example, converting optical signals representing temperature and pressure into electric signals. The fiber optic sensing analyzer (10) is preferably not placed downhole, but is located at the surface. And transmitting signals of the first optical fiber sensor (7) and the second optical fiber sensor (8) to an optical fiber sensing analyzer (10) through a second optical cable (9). The second cable (9) is preferably an armored cable in order to accommodate high temperature, high pressure and corrosive environments downhole.
The data processing unit (11) is used for processing signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow. The data processing unit (11) is typically not placed downhole, but is located on the surface.
The signal wire (12) is used for transmitting the output signal of the optical fiber sensing analyzer (10) to the data processing unit (11).
The above is a detailed description of the apparatus provided by the first aspect of the present invention. The second aspect of the present invention is substantially the same as the first aspect, and only the differential pressure measurement strategy is different. Therefore, for the sake of brevity, only the differential pressure measurement of the apparatus of the second aspect of the present invention is described below, and the remaining components other than the differential pressure measurement component are still as described in the first aspect of the present invention. In addition, the third optical fiber sensor (15) and the fourth optical fiber sensor (16) can adopt any structure suitable for measuring temperature and pressure in the field of optical fiber sensing, such as an optical fiber grating structure or an optical fiber Fabry-Perot cavity structure. As shown in fig. 2, the pressure of the first measuring point and the second measuring point is transmitted to both sides of the elastic element (14) by the pressure guiding device (13) (which may adopt a conventional pressure guiding pipe structure or other structure suitable for pressure guiding), the pressure difference deforms the elastic element (14), and strain is generated, and the differential pressure value Δ P between the first measuring point and the second measuring point can be obtained by detecting the strain of the elastic element (14) through the third optical fiber sensor (15). Furthermore, in general, the temperature of the elastic element (14) measured by the third optical fiber sensor (15) can be taken as an approximation of the temperature of the multiphase flow flowing through the throttling device (2); in case of higher accuracy requirements, the temperature near the first measurement point of the throttling device (2) can be measured by an optional fourth fiber optic sensor (16) as the temperature of the multiphase flow flowing through the throttling device (2). This second aspect forms a side-by-side embodiment of the invention.
The utility model discloses a measuring device's theory of operation as follows:
after entering the dragging barrel (1), the underground multiphase flow firstly passes through a first optical fiber sensor (7) which is arranged at the upstream of the throttling device (2) and is not subjected to throttling action, then enters the throttling device (2) and then passes through a second optical fiber sensor (8) which is arranged at the minimum flow cross section of the throttling device (2). The first optical fiber sensor (7) and the second optical fiber sensor (8) respectively obtain optical signals representing the temperature and the pressure of the fluid flowing through the optical fiber sensor, the optical signals are transmitted to an optical fiber sensing analyzer (10) on the ground through a second armored optical cable (9), the optical signals are converted into electric signals representing the temperature and the pressure by the optical fiber sensing analyzer (10), the electric signals are provided to a data processing unit (11), the temperature T1 and the pressure P1 of the fluid flowing through the first measuring point and the temperature T2 and the pressure P2 of the fluid flowing through the second measuring point are recorded in the data processing unit (11), and therefore the differential pressure delta P between the two is obtained (P1-P2).
The multiphase flow flowing through the throttling device (2) will pass through a gamma ray phase fraction meter (3). The gamma-ray phase fraction meter (3) comprises a gamma-ray radiation source (4) and a gamma-ray detector (5) which are arranged in an up-down stream relation along the flow direction of the multiphase flow. The gamma ray detector (5) may be composed of a fluorescent crystal (e.g., NaI (T1) crystal) and a light guide, or may be composed of a fluorescent crystal and a photomultiplier tube (PMT). If the gamma ray detector (5) consists of a fluorescent crystal and a light guide device, the gamma ray detector (5) receives gamma rays emitted by the gamma ray radiation source (4), converts the gamma rays into fluorescent signals through the fluorescent crystal, and transmits the fluorescent signals into the first optical cable (6) through the light guide device and transmits the fluorescent signals to the photoelectric conversion module of the ground data processing unit (11). If the gamma ray detector (5) consists of a fluorescent crystal and a photomultiplier, the gamma ray detector (5) receives gamma rays of the gamma ray radiation source (4), converts the gamma rays into fluorescent signals through the fluorescent crystal, the fluorescent signals directly enter the photomultiplier immediately behind the fluorescent crystal and are subjected to photoelectric amplification to form electric signals, and the electric signals are transmitted to the data processing unit (11) through the first cable (6). The data processing unit (11) substitutes the mixing density of the multiphase flow under the well provided by the gamma-ray phase-fraction meter (3) and the differential pressure value at the first measuring point and the second measuring point provided by the optical fiber sensing analyzer (10) into a total flow calculation formula of the multiphase flow to obtain the total flow of the multiphase flow under the well flowing through the throttling device (2). For example, for a common throttling device venturi, the total flow calculation formula is:
total flow rate, m3/s
Wherein C is the outflow coefficient of the fluid, provided by the viscosity model of the data processing unit (11), dimensionless; d is the inner pipe diameter at the narrowest flow-through cross-sectional area of the Venturi tube (also called throat part, here, the second measuring point); beta is the ratio of the inner pipe diameter at the throat part of the Venturi tube to the inner pipe diameter at the inlet (the flow cross-sectional area is the same as the upstream cross-sectional area, and the throttling effect does not occur, and the flow cross-sectional area can be used as a first measuring point); delta P is the pressure difference between the first measuring point and the second measuring point provided by the optical fiber sensing analyzer (10); ρ mix is the mixed density of the fluid flowing through the throttling device (2) provided by the gamma-ray phase fraction meter (3). The units of the above physical quantities, if any, are made according to the International Union System.
After the total flow rate of the fluid is obtained, the flow rate of each phase fluid in the well can be obtained by using each phase fraction provided by the gamma-ray phase fraction meter (3). The specific calculation formula is as follows:
gas phase flow rate (total flow rate x gas content rate, m 3/s)
Liquid phase flow (total flow x (1-gas content)), m3/s
Or,
water phase flow (total flow rate × (1-gas void rate) × water content, m3/s
Total flow rate (1-gas content) x (1-water content), m3/s
The invention has been described above for the purpose of illustration only, and it will be understood by those skilled in the art that the arrangements, specific numerals and the like set forth herein are merely exemplary and that variations in detail may be made therein by those skilled in the art without departing from the scope of the invention as defined by the claims.
Claims (8)
1. A measurement device for measuring the flow of each phase in a multiphase flow downhole, comprising:
a mop cylinder (1);
a throttling device (2) arranged in the dragging cylinder (1); the throttle element (2) has at least one flow cross section which is narrower than the mop cylinder (1);
a gamma-ray phase fraction meter (3) arranged in the towing cylinder (1) and positioned at the upstream or downstream of the throttling device (2) and used for measuring the phase fraction of each phase in the multiphase flow and measuring the mixed density;
a first optical or electrical cable (6) for transmitting the signals of the gamma-ray phase fraction meter (3) to a data processing unit (11);
a first fibre-optic sensor (7) for measuring the temperature and pressure of the multiphase flow upstream of the throttling device (2);
a second fiber optic sensor (8) for measuring temperature and pressure of the multiphase flow at the narrowest flow cross section of the throttling device (2);
a second optical cable (9) for transmitting signals of the first optical fiber sensor (7) and the second optical fiber sensor (8) to an optical fiber sensing analyzer (10);
a fiber sensing analyzer (10) for analyzing and processing signals from the first fiber sensor (7) and the second fiber sensor (8);
a signal line (12) for transmitting an output signal of the optical fiber sensing analyzer (10) to the data processing unit (11);
and the data processing unit (11) is used for processing the signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow.
2. A measurement device for measuring the flow of each phase in a multiphase flow downhole, comprising:
a mop cylinder (1);
a throttling device (2) arranged in the dragging cylinder (1); the throttle element (2) has at least one flow cross section which is narrower than the mop cylinder (1);
a gamma-ray phase fraction meter (3) arranged in the towing cylinder (1) and positioned at the upstream or downstream of the throttling device (2) and used for measuring the phase fraction of each phase in the multiphase flow and measuring the mixed density;
a first optical or electrical cable (6) for transmitting the signals of the gamma-ray phase fraction meter (3) to a data processing unit (11);
a pressure-inducing device (13) for inducing the pressure of the multiphase flow upstream of the throttling means (2) and at the narrowest flow cross-section of the throttling means (2) to both sides of an elastic element (14) and creating a pressure difference between the two sides;
an elastic element (14) that is strained by deformation that occurs under the action of the pressure difference;
a third optical fiber sensor (15) for measuring the temperature of the elastic element (14) and detecting the strain of the elastic element (14) under the action of the pressure difference;
a second optical cable (9) for transmitting the signal of the third optical fiber sensor (15) to the optical fiber sensing analyzer (10);
a fiber sensing analyzer (10) for analyzing and processing the signal from the third fiber sensor (15);
a signal line (12) for transmitting an output signal of the optical fiber sensing analyzer (10) to the data processing unit (11);
and the data processing unit (11) is used for processing the signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow.
3. A measurement device for measuring the flow of each phase in a multiphase flow downhole, comprising:
a mop cylinder (1);
a throttling device (2) arranged in the dragging cylinder (1); the throttle element (2) has at least one flow cross section which is narrower than the mop cylinder (1);
a gamma-ray phase fraction meter (3) arranged in the towing cylinder (1) and positioned at the upstream or downstream of the throttling device (2) and used for measuring the phase fraction of each phase in the multiphase flow and measuring the mixed density;
a first optical or electrical cable (6) for transmitting the signals of the gamma-ray phase fraction meter (3) to a data processing unit (11);
a pressure-inducing device (13) for inducing the pressure of the multiphase flow upstream of the throttling means (2) and at the narrowest flow cross-section of the throttling means (2) to both sides of an elastic element (14) and creating a pressure difference between the two sides;
an elastic element (14) that is strained by deformation that occurs under the action of the pressure difference;
a third optical fiber sensor (15) for measuring the temperature of the elastic element (14) and detecting the strain of the elastic element (14) under the action of the pressure difference;
a fourth fiber optic sensor (16) for measuring the temperature of the multiphase flow upstream of the throttling device (2);
a second optical cable (9) for transmitting the signal of the third optical fiber sensor (15) and the signal of the fourth optical fiber sensor (16) to the optical fiber sensing analyzer (10);
a fiber sensing analyzer (10) for analyzing and processing the signal from the third fiber sensor (15) and the signal from the fourth fiber sensor (16);
a signal line (12) for transmitting an output signal of the optical fiber sensing analyzer (10) to the data processing unit (11);
and the data processing unit (11) is used for processing the signals from the optical fiber sensing analyzer (10) and the gamma ray detector (5) to obtain the flow rate of each phase in the multiphase flow.
4. A measuring device according to claim 1, 2 or 3, characterized in that the gamma-ray phase fraction meter (3) comprises a gamma-ray source (4) and a gamma-ray detector (5), the gamma-ray source (4) and the gamma-ray detector (5) being arranged in an upstream and downstream manner, or vice versa, in the flow direction of the multiphase flow.
5. A measuring device according to claim 1 or 2 or 3, characterized in that the throttling means (2) is selected from the group consisting of a venturi tube, a nozzle, an inner cone or an orifice plate.
6. A measuring device according to claim 1 or 2, characterized in that the first (7), second (8) and third (15) fibre optic sensors are each independently arranged in a fibre grating structure or a fibre fabry-perot cavity structure.
7. A measuring device according to claim 3, characterized in that the first (7), second (8), third (15) and fourth (16) fiber optic sensors are each independently arranged in a fiber grating structure or a fiber fabry-perot cavity structure.
8. The measuring device according to claim 1 or 2 or 3, wherein the first optical cable or first electrical cable (6) is an armored optical cable or armored electrical cable and the second optical cable (9) is an armored optical cable.
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| CN (1) | CN203214053U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759772A (en) * | 2014-01-27 | 2014-04-30 | 兰州海默科技股份有限公司 | Device and method for metering oil-gas-water three-phase flow in thickened oil in whole range |
| CN104121955A (en) * | 2014-07-24 | 2014-10-29 | 西安交通大学 | Liquid-liquid two-phase fluid flow measurement device and method based on phase separation and ultrasonic technologies |
| CN104389581A (en) * | 2014-09-17 | 2015-03-04 | 中国石油大学(北京) | Underground fluid induction device and fluid flow velocity measuring system using same |
| CN104567986A (en) * | 2013-10-11 | 2015-04-29 | 中国人民解放军第二炮兵工程大学 | FBG (fiber bragg grating)-based multifunctional flow sensor provided with embedded standard nozzle |
| CN107816345A (en) * | 2017-10-09 | 2018-03-20 | 中国石油天然气集团公司 | A kind of apparatus and method of well casing gas tolerance metering |
| CN108693379A (en) * | 2018-07-10 | 2018-10-23 | 湖北文索光电科技有限公司 | fiber grating ocean current detection sensor and ocean current detection system |
| CN113803006A (en) * | 2021-09-09 | 2021-12-17 | 中国石油大学(华东) | Device and method for monitoring constant throttle pressure regulation in real time based on multiphase flow density |
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2013
- 2013-01-07 CN CN 201320007210 patent/CN203214053U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104567986A (en) * | 2013-10-11 | 2015-04-29 | 中国人民解放军第二炮兵工程大学 | FBG (fiber bragg grating)-based multifunctional flow sensor provided with embedded standard nozzle |
| CN103759772A (en) * | 2014-01-27 | 2014-04-30 | 兰州海默科技股份有限公司 | Device and method for metering oil-gas-water three-phase flow in thickened oil in whole range |
| CN103759772B (en) * | 2014-01-27 | 2017-12-05 | 兰州海默科技股份有限公司 | The apparatus and method of oil-gas-water three phase flow quantity in a kind of gamut metering viscous crude |
| CN104121955A (en) * | 2014-07-24 | 2014-10-29 | 西安交通大学 | Liquid-liquid two-phase fluid flow measurement device and method based on phase separation and ultrasonic technologies |
| CN104121955B (en) * | 2014-07-24 | 2017-02-15 | 西安交通大学 | Liquid-liquid two-phase fluid flow measurement device and method based on phase separation and ultrasonic technologies |
| CN104389581A (en) * | 2014-09-17 | 2015-03-04 | 中国石油大学(北京) | Underground fluid induction device and fluid flow velocity measuring system using same |
| CN107816345A (en) * | 2017-10-09 | 2018-03-20 | 中国石油天然气集团公司 | A kind of apparatus and method of well casing gas tolerance metering |
| CN108693379A (en) * | 2018-07-10 | 2018-10-23 | 湖北文索光电科技有限公司 | fiber grating ocean current detection sensor and ocean current detection system |
| CN113803006A (en) * | 2021-09-09 | 2021-12-17 | 中国石油大学(华东) | Device and method for monitoring constant throttle pressure regulation in real time based on multiphase flow density |
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