CN214697820U - Wellhead return flow online monitoring system - Google Patents
Wellhead return flow online monitoring system Download PDFInfo
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- CN214697820U CN214697820U CN202022673012.4U CN202022673012U CN214697820U CN 214697820 U CN214697820 U CN 214697820U CN 202022673012 U CN202022673012 U CN 202022673012U CN 214697820 U CN214697820 U CN 214697820U
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Abstract
The utility model relates to a petroleum engineering well drilling technical field discloses a flow on-line monitoring system is returned to well head, utilizes on-line monitoring system to realize the measurement of liquid level height and fluid velocity of flow in the pipeline, still is supporting simultaneously to have high automatic correction module, consequently not only the cost is lower, and measured flow is also more accurate, and whole on-line monitoring system is lower to the installation requirement on scene simultaneously, and it is also more convenient to install.
Description
Technical Field
The application relates to the technical field of petroleum engineering drilling, in particular to a wellhead return flow online monitoring system.
Background
The return flow of the well mouth of the well is the most direct index of the overflow and leakage analysis, so that the high-precision monitoring of the flow is realized, and the rapid discovery of the pipeline overflow and leakage is facilitated. At present, 8L03 type outlet flow meters are commonly used by a drilling team, the device adopts contact type measurement, the problems of poor measurement precision, large measurement data fluctuation and the like exist, and quantitative analysis cannot be provided for field personnel.
Through analysis, the problem of large contact measurement error is mainly caused by the following reasons:
1. the density, viscosity, wave and liquid level of the drilling fluid flowing in all have important influence on the swing of the baffle plate, the change of the flow rate cannot be accurately defined, and the main reason of large error is.
2. During the measurement process, the solid phase of the drilling fluid is adhered to the baffle, so that the weight of the baffle is changed, and further continuous measurement errors are caused.
3. The different installation positions of the baffles cause different contact areas with the fluid, and the measurement accuracy is also influenced.
In response to the above problems, researchers have made a great deal of research and analysis. For example, in the prior art, publication numbers are: CN102704874A, published date: the invention relates to a patent publication of 'a drilling fluid return flow rate detection device and method' on the day 03 of 10 months in 2012, which adopts the technical scheme that: the device comprises one or more flow measurement nipple joints (5) installed between a shaft drilling fluid return port (3) and a vibrating screen (4), the flow measurement nipple joint (5) comprises a rectangular cross section overflowing section (6) and a horn mouth buffer section located at two ends of the rectangular cross section overflowing section (6), a liquid level sensor (1) is installed at the top of the rectangular cross section overflowing section (6), a flow velocity sensor (2) is installed in a liquid flow inside the rectangular cross section overflowing section (6), and the liquid level sensor (1) and the flow velocity sensor (2) are respectively electrically connected with a calculation and display alarm unit (8).
Although the above prior art can realize the real-time measurement of the flow that returns out of the well head, because it adopts the contact mode to measure the velocity of flow, consequently long-term use reliability is low to above-mentioned device need change the well head anti-overflow pipe when the installation is used, still has the big problem of work load.
Disclosure of Invention
To the problem and the defect that exist among the above-mentioned prior art, this application provides a flow on-line monitoring system is returned to well head, and on-line monitoring system has realized the measurement of liquid level height and fluid velocity in the pipeline to can also the true liquid level height in the automatic correction pipeline, not only the cost is lower, and the simultaneous measurement flow is also more accurate, and lower to the installation requirement on scene, and it is more convenient to install.
In order to achieve the above object, the technical solution of the present application is as follows:
a wellhead return flow online monitoring system comprises a signal probe device, a first angle sensor, a second angle sensor, a signal converter and a processor, wherein the signal probe device, the first angle sensor and the second angle sensor are all arranged on the outer surface of a pipeline, the signal probe device and the first angle sensor are arranged in a mounting shell, the first angle sensor and the signal probe device are positioned on two sides of the same mounting plane, the mounting shell is connected with the pipeline through a connecting flange, the second angle sensor is directly mounted on the pipeline, the signal probe device, the first angle sensor and the second angle sensor are respectively connected with the signal converter, and the signal converter is connected with the processor;
wherein:
the signal probe device is used for transmitting signals into the pipeline and receiving reflected signals at the same time;
the first angle sensor is used for measuring an included angle between a signal generation probe in the signal probe device and the vertical direction;
the second angle sensor is used for measuring an included angle between the pipeline and the vertical direction;
the signal converter is used for converting the signals output by the signal probe device and the angle sensor into input signals which can be recognized by the processor;
and the processor is used for receiving the digital signals transmitted by the signal converter and processing the data, and finally calculating the real-time flow in the pipeline according to the average liquid level height and the average liquid flow speed in the pipeline.
Preferably, a sleeve with a partially hollow part is arranged on the connecting flange.
Preferably, in the signal probe device, the signal generating probe at the middle position has a horizontal sliding function, and after the device is installed, the position can be automatically adjusted to complete the centering with the lowest point of the pipeline.
Preferably, the installation casing includes top cap, installation barrel and base, and the top cap passes through hexagon bolt and is connected with the installation barrel, and the afterbody of installation barrel passes through hexagon bolt again and is connected with the base, and the other end of base is provided with flange and is connected with the flange on the pipeline through connecting bolt, installation barrel bottom is uncovered, and the top is provided with the mounting panel, sets up the locking subassembly that is used for fixed signal probe device on the mounting panel, and an angle sensor passes through connecting bolt and sets up on the mounting panel, and flange on the base is provided with the sleeve of local fretwork, and the telescopic other end passes through hexagon bolt and is connected with the mounting panel, and signal probe device's signal transmission end is located in the sleeve.
Preferably, the locking subassembly includes a fixed cylinder and a locking bolt arranged on the side wall of the fixed cylinder, the fixed cylinder is arranged on the mounting plate, the signal output end of the signal probe device is positioned in the fixed cylinder, and one end of the locking bolt penetrates through a threaded hole arranged on the side wall of the fixed cylinder and abuts against the signal output end of the signal probe device.
Preferably, a sealing gasket is arranged between the mounting cylinder and the base.
The beneficial effect of this application:
(1) this application utilizes on-line monitoring system to realize the measurement of liquid level height and fluid velocity of flow in the pipeline, still is supporting simultaneously to have highly automatic correction module, consequently not only the cost is lower, and measurement flow is also more accurate, and whole on-line monitoring system is lower to the installation requirement on scene simultaneously, and it is more convenient to install, has realized the discretization with the flow measurement data in the pipeline through the method of integral at last and has handled, and the interference killing feature has had further improvement.
(2) Because this application sets up the surface at the pipeline, adopts non-contact method to measure the fluid velocity of flow, consequently whole monitoring system's life-span is longer, and long-term service reliability is higher.
(3) In this application, the sleeve that sets up on the flange adopts local fretwork design, consequently can make things convenient for high temperature drilling fluid steam to discharge.
Drawings
The foregoing and following detailed description of the present application will become more apparent when read in conjunction with the following drawings, wherein:
FIG. 1 is a schematic diagram of the present application;
FIG. 2 is a schematic view of the present application illustrating the construction of the mounting housing;
FIG. 3 is a schematic cross-sectional view of a pipe according to the present application.
In the figure:
1. a signal probe device; 2. a first angle sensor; 3. a second angle sensor; 4. installing a shell; 5. a connecting flange; 6. a sleeve; 7. mounting a plate; 8. a locking assembly; 9. sealing gaskets; 11. a signal generating probe; 41. a top cover; 42. installing a cylinder body; 43. a base; 81. a fixed cylinder; 82. and locking the bolt.
Detailed Description
The technical solutions for achieving the objects of the present invention are further described below by using several specific examples, and it should be noted that the technical solutions claimed in the present application include, but are not limited to, the following examples.
Example 1
The embodiment discloses an online monitoring system for wellhead return flow, which comprises a signal probe device 1, a first angle sensor 2, a second angle sensor 3, a signal converter and a processor, and is shown in the attached figure 1 of the specification, the signal probe device 1, the first angle sensor 2 and the second angle sensor 3 are all arranged on the outer surface of the pipeline, the signal probe device 1 and the first angle sensor 2 are arranged on the pipeline through the installation shell 4, the first angle sensor 2 and the signal probe device 1 are positioned on two sides of the same mounting plane, the mounting shell 4 is connected with a pipeline through a connecting flange 5, the second angle sensor 3 is directly mounted on the pipeline through a connecting bolt, the signal probe device 1, the first angle sensor 2 and the second angle sensor 3 are respectively connected with a signal converter, and the signal converter is connected with a processor;
wherein:
the signal probe device 1 is used for transmitting signals into the pipeline and receiving reflected signals at the same time;
the angle sensor 2 is used for measuring an included angle between a signal generation probe 11 in the signal probe device 1 and the vertical direction;
a second angle sensor 3 for measuring an included angle between the pipeline and the vertical direction;
the signal converter is used for converting the signals output by the signal probe device 1 and the angle sensor into input signals which can be recognized by the processor;
and the processor is used for receiving the digital signals transmitted by the signal converter and processing the data, and finally calculating the real-time flow in the pipeline according to the average liquid level height and the average liquid flow speed in the pipeline.
Example 2
The embodiment discloses a flow on-line monitoring system is returned to well head, on the basis of embodiment 1, refer to description attached drawing 2, be provided with sleeve 6 on flange 5, the afterbody of sleeve 6 is provided with a plurality of holes, consequently, sleeve 6 is the structure of a local fretwork. The sleeve 6 adopts a partially hollow structural design, so that high-temperature drilling fluid steam can be conveniently discharged.
Further, referring to the attached fig. 2 and fig. 3 of the specification, the signal probe device 1 includes a signal generating probe 11, the signal generating probe 11 is disposed in the housing, the signal generating probe 11 located at the middle position has a horizontal sliding function, and after the device is installed, the position can be automatically adjusted to complete the centering with the lowest point of the pipeline. In the signal probe device 1, the end provided with the signal generating probe 11 is a signal transmitting end of the signal probe device 1, and the other end is a signal output end.
Further, refer to specification figure 2, installation casing 4 is from last to including top cap 41, installation barrel 42 and base 43 down in proper order, and top cap 41 is connected with installation barrel 42 through the hex bolts, and the afterbody of installation barrel 42 is connected with base 43 through the hex bolts again, and the afterbody of base 43 is provided with flange 5 and is connected with flange 5 on the pipeline through connecting bolt, installation barrel 42 bottom is open structure, and the top is provided with mounting panel 7, is provided with the through-hole that supplies signal probe device 1 to pass on the mounting panel 7 and is used for the locking Assembly 8 of fixed signal probe device 1, and the signal output part of signal probe device 1 passes and is connected with locking Assembly 8 from the through-hole on mounting panel 7, and the signal emission end of signal probe device 1 is located the opposite side of mounting panel 7, and an angle sensor 2 sets up on mounting panel 7 through connecting bolt and is located the different of mounting panel 7 with the signal emission end of signal probe device 1 Laterally, furthermore, the connecting flange 5 on the base 43 is provided with a sleeve 6 with a partially hollow part, the other end of the sleeve 6 is connected with the mounting plate 7 through a hexagon bolt, and the signal transmitting end of the signal probe device 1 is positioned in the sleeve 6.
Further, referring to the attached drawing 2 of the specification, the locking assembly 8 includes a fixed cylinder 81 and two locking bolts 82 symmetrically disposed on a side wall of the fixed cylinder 81, one end of the fixed cylinder 81 is of an open structure, the other end of the fixed cylinder is provided with a top wall, a through hole for the signal probe device 1 to pass through is also disposed on the top wall, a signal output end of the signal probe device 1 passes through the through hole on the top wall and is connected with the signal converter through a signal line, a threaded hole matched with the locking bolt 82 is disposed on the side wall of the fixed cylinder 81, and one end of the locking bolt 82 passes through the threaded hole and abuts against a signal output end of the signal probe device 1 so as to fix the same.
Further, referring to fig. 2 of the specification, a sealing gasket 9 is arranged between the mounting cylinder 42 and the base 43.
In this application, the signal emission end of signal probe device is provided with a plurality of signal emission probes, and the signal generation probe that is located central point department is the activity probe, and all other probes are fixed probes. When the device works, the motor in the signal probe device operates and drives the telescopic rod to move, so that the movable probe connected with the telescopic rod is driven to horizontally slide on the translation track.
The working principle of the system is as follows:
the online monitoring system mainly realizes the measurement of the return flow of the wellhead by the following steps:
s01, centering the hollow pipe, horizontally moving the signal generation probe positioned in the middle position and continuously transmitting signals, calculating the distance from the signal generation probe to the bottom of the pipeline according to the time difference between the transmitted signals and the reflected signals, and finding the lowest point of the pipeline when the maximum distance from the signal generation probe to the bottom of the pipeline is found; the empty pipe refers to when no fluid is present in the manifold.
S02, respectively reading the measurement data a and b of two angle sensors on the pipeline and the initial measurement value H of the rest signal generation probes in the signal probe devicenThe two angle sensors are both arranged on the outer surface of the pipeline, wherein a represents an included angle between a signal emission line of the signal generation probe and the vertical direction; b represents the included angle between the pipeline and the vertical direction; hnAnd the distance between each signal generation probe and the bottom of the hollow pipe is represented, and the distance is calculated according to the time difference between the emission signal and the reflection signal of each signal generation probe.
S03, correcting the real height, and obtaining the vertical distance H from all signal generating probes to the bottom of the pipeline according to the step bTrue；
HTrue＝Hn×sin(a+b)。
S04, obtaining during measurementCalculating the time difference between the emission signal and the reflection signal of each signal generation probe to obtain the linear distance h between the signal generation probe and the liquid level in the pipelinenAnd correcting by adopting the formula in the step c to obtain the vertical distance h from each signal generating probe to the liquid level in the pipelineTrueRespectively calculating the height h of the liquid level in the pipeline measured by each signal generating probe, and finally taking the arithmetic mean value of the height h of the liquid level in the pipeline as the average height h of the liquid level in the pipeline according to the height h of the liquid level in the pipeline measured by each signal generating probeLiquid for treating urinary tract infection；
h＝max(HTrue)-hTrue。
S05, calculating the frequency difference between the emission signal and the reflection signal of each signal generation probe to obtain the real-time flow velocity measurement value V of the liquid in the pipelinenFinally, according to the real-time flow velocity measured value V of the liquid measured by each signal generating probenTaking the arithmetic mean value as the actually measured flow velocity V of the liquid in the pipelineLiquid for treating urinary tract infection。
S06, dividing 1S into n sampling points according to the average liquid level height h in the pipelineLiquid for treating urinary tract infectionAnd the average liquid flow velocity VLiquid for treating urinary tract infectionCalculating the real-time micro-flow Q of a single sampling point, and superposing the real-time micro-flow Q of n sampling points to obtain the final real-time output flow Q per second; the real-time micro-flow q of a single sampling point is calculated by the following formula:
order to
If R-hLiquid for treating urinary tract infectionIf greater than 0, then
If R-hLiquid for treating urinary tract infectionQ is 0.5 pi R2×VLiquid for treating urinary tract infection×t；
If R-hLiquid for treating urinary tract infectionIf less than 0, then
Wherein R is the inner diameter of the pipeline, and t is the single sampling time.
In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present application and for simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the scope of the present application.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The foregoing is directed to embodiments of the present invention, which are not limited thereto, and any simple modifications and equivalents thereof according to the technical spirit of the present invention may be made within the scope of the present invention.
Claims (6)
1. The utility model provides a flow on-line monitoring system is returned to well head which characterized in that: the pipeline angle sensor comprises a signal probe device (1), a first angle sensor (2), a second angle sensor (3), a signal converter and a processor, wherein the signal probe device (1), the first angle sensor (2) and the second angle sensor (3) are all arranged on the outer surface of a pipeline, the signal probe device (1) and the first angle sensor (2) are arranged in an installation shell (4), the first angle sensor (2) and the signal probe device (1) are positioned on two sides of the same installation plane, the installation shell (4) is connected with the pipeline through a connecting flange (5), the second angle sensor (3) is directly installed on the pipeline, the signal probe device (1), the first angle sensor (2) and the second angle sensor (3) are respectively connected with the signal converter, and the signal converter is connected with the processor;
wherein:
the signal probe device (1) is used for transmitting signals into the pipeline and receiving reflected signals at the same time;
the angle sensor (2) is used for measuring an included angle between a signal generation probe in the signal probe device (1) and the vertical direction;
a second angle sensor (3) for measuring the included angle between the pipeline and the vertical direction;
the signal converter is used for converting signals output by the signal probe device (1) and the angle sensor into input signals which can be recognized by the processor;
and the processor is used for receiving the digital signals transmitted by the signal converter and processing the data to calculate the real-time flow of the liquid in the pipeline.
2. The wellhead return flow online monitoring system according to claim 1, characterized in that: and a sleeve (6) with a partially hollow part is arranged on the connecting flange (5).
3. The wellhead return flow online monitoring system according to claim 1, characterized in that: in the signal probe device (1), the signal generating probe (11) positioned in the middle position has a horizontal sliding function, and after the device is installed, the position can be automatically adjusted to complete the centering with the lowest point of the pipeline.
4. The wellhead return flow online monitoring system according to claim 1, characterized in that: the mounting shell (4) comprises a top cover (41), a mounting cylinder (42) and a base (43), the top cover (41) is connected with the mounting cylinder (42) through a hexagon bolt, the tail part of the mounting cylinder (42) is connected with the base (43) through the hexagon bolt, the other end of the base (43) is provided with a connecting flange (5) and is connected with the connecting flange (5) on the pipeline through the connecting bolt, the bottom of the mounting cylinder (42) is open, the top of the mounting cylinder is provided with a mounting plate (7), a locking component (8) for fixing the signal probe device (1) is arranged on the mounting plate (7), a first angle sensor (2) is arranged on the mounting plate (7) through the connecting bolt, the connecting flange (5) on the base (43) is provided with a sleeve (6) which is partially hollowed out, and the other end of the sleeve (6) is connected with the mounting plate (7) through the hexagon bolt, the signal transmitting end of the signal probe device (1) is positioned in the sleeve (6).
5. The wellhead return flow online monitoring system according to claim 4, characterized in that: locking Assembly (8) are including a fixed section of thick bamboo (81) and locking bolt (82) of setting on a fixed section of thick bamboo (81) lateral wall, and a fixed section of thick bamboo (81) set up on mounting panel (7), and the signal output part of signal probe device (1) is located a fixed section of thick bamboo (81), and the one end of locking bolt (82) passes the screw hole that sets up on a fixed section of thick bamboo (81) lateral wall and supports the signal output part of signal probe device (1).
6. The wellhead return flow online monitoring system according to claim 4, characterized in that: a sealing gasket (9) is arranged between the mounting cylinder (42) and the base (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673012.4U CN214697820U (en) | 2020-11-18 | 2020-11-18 | Wellhead return flow online monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022673012.4U CN214697820U (en) | 2020-11-18 | 2020-11-18 | Wellhead return flow online monitoring system |
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| CN214697820U true CN214697820U (en) | 2021-11-12 |
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| CN202022673012.4U Active CN214697820U (en) | 2020-11-18 | 2020-11-18 | Wellhead return flow online monitoring system |
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