CN210829228U - Well head calibration metering vehicle connecting device - Google Patents
Well head calibration metering vehicle connecting device Download PDFInfo
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- CN210829228U CN210829228U CN201921819410.3U CN201921819410U CN210829228U CN 210829228 U CN210829228 U CN 210829228U CN 201921819410 U CN201921819410 U CN 201921819410U CN 210829228 U CN210829228 U CN 210829228U
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Abstract
The utility model discloses a well mouth calibration measuring vehicle connecting device, which comprises a central tube and an outer tube, wherein the central tube is arranged inside the outer tube, a liquid outlet hole, a connecting step and a liquid return joint are arranged on the tube body of the outer tube, one end of the outer tube is provided with an internal thread, the inner cavity of the other end of the outer tube is provided with a sealing partition table, and a sealing element and a bearing or an end cap are arranged outside the sealing partition table; the outer thread is arranged at one end of the central tube and is provided with a baffle nut, a fixed baffle and a sealing barrel, the outer thread at one end of the central tube is connected with the outer tube, and the other end of the central tube is provided with a liquid outlet joint and is provided with a tensioning nut. The utility model discloses simple structure, convenient operation has avoided the vexed and complicated operation of dismantling well head production flow, just can accomplish the connection work who marks measurement car and well head production flow, greatly reduced workman's intensity of labour, have apparent result of use and using value.
Description
Technical Field
The utility model relates to a well head connecting device, especially well head calibration measurement car connecting device of oil industry oil recovery well.
Background
In the production process of the oil well, the metering separator is used for calculating the yield of the oil well originally, the metering mode is a small station metering mode, the metering mode generally adopts the yield of a plurality of oil wells to enter the same metering station, a set of separating and metering devices are commonly used, the wells are selected in a manual or automatic control mode, and finally the small station metering mode is used for periodically and intermittently metering each oil well. Because the whole level of oil well metering technology is not high, the whole oil well metering technology stays in a manual operation stage, manual well selection, manual sampling and testing, manual tax analysis, manual data recording and the like are all completed through manual operation. The small station metering mode utilizes a set of separated metering devices to realize gas flow calculation and liquid flow calculation of a plurality of oil wells, and the framework determined by the working process has great limitation. The investment amount involved in the well selection process of the small station metering mode is very large, a large amount of ground pipelines and equipment are needed, the oil wells are dispersed, so the ground flow is complex in the metering process, the continuous metering of the oil wells has great difficulty, the defect of the small station metering mode in the metering process is overcome, and the great waste is caused in the aspects of manpower, material resources and financial resources. In a production field, because a single well is far away from a metering station, a wellhead is not provided with a water jacket heating furnace, crude oil has high wax content or thick oil and other reasons, the long-distance crude oil conveying cannot be realized, and therefore two oil wells share one conveying pipeline to achieve the purpose of crude oil conveying.
Because the metering separator calculates the oil well output and has the problems of complicated working procedure and inaccurate metering, after the oil field oil extraction field equipment realizes intelligent informatization, the metering separator is cancelled, and an indicator diagram oil metering method is adopted by utilizing an indicator diagram sensor. Due to the physical property of the crude oil in the stratum and the technical reason of remote transmission equipment of the indicator diagram, the indicator diagram oil still has the following defects:
firstly, the determination method of the damping coefficient causes inaccurate oil well yield measurement, and the damping coefficient is as follows: refers to the ratio of the amplifier's rated load speaker impedance to the power amplifier's actual impedance. A large damping coefficient indicates a small output resistance of the power amplifier, which is the ability of the amplifier to control the movement of the loudspeaker cone after the signal disappears. An amplifier with a high damping coefficient, more like a short circuit to a speaker, reduces its vibration when the signal is terminated. The output impedance of the power amplifier directly affects the low frequency Q of the loudspeaker system and thus the low frequency characteristics of the system. The Q value of the speaker system is preferably not too high, but is generally preferably in the range of 0.5 to l, and the output impedance of the power amplifier is a factor for raising the low-frequency Q value, so that it is generally preferable that the output impedance of the power amplifier is small and the damping coefficient is large. The damping coefficient is generally between dozens and hundreds, and the damping coefficient of a high-quality professional power amplifier can be as high as more than 200.
Secondly, because the indicator diagram sensor calculates the indicator diagram area according to the load of the pumping unit equipment, the variation difference of the uplink load and the downlink load of the oil well with low liquid production amount is small due to different liquid production amounts of the oil well, the load received by the indicator diagram sensor is basically consistent, and the sensor defaults to no yield, so that the measurement error of the existing indicator diagram oil measuring technology on the oil well with low liquid production amount is large.
And thirdly, the heavy oil well and the oil well with high gas-liquid ratio have large measurement errors, and because gas is compressible, when the gas production rate of the oil well is large, although the oil well does not produce less liquid, because a large amount of gas exists, the default gas of the indicator diagram sensor is also liquid, so that the yield measurement of the oil well is inaccurate.
Fourthly, the oil extraction mode of continuous pumping and spraying causes large measurement error of the oil well, namely: the oil well has high ground pressure, and the self pressure of the stratum contributes to lifting the liquid to the ground besides the liquid extracted by the oil well pump. Because the stratum self lifts liquid, the original load of the oil pumping unit is changed, the ascending and descending loads of the oil pumping unit are smaller than the original load, and the indicator diagram sensor cannot judge whether the liquid is produced by the oil well pump in a working mode or produced by the oil well self-blowing mode, so that the oil production meter cannot be measured by using the indicator diagram method.
In order to ensure that the oil well yield is accurately calculated, a calibration and measurement vehicle is introduced by an oil extraction unit, so that the oil well with the yield fluctuation can be measured and calibrated on site at any time, and reliable parameters are provided for the indicator diagram oil measurement of intelligent information management.
However, the liquid inlet pipeline and the return pipeline of the calibration and measurement vehicle cannot be directly installed on the wellhead production process, when the wellhead of the oil well is connected with the calibration and measurement vehicle, the heat insulation layer of the return pressure gate in the wellhead production process needs to be removed every time of operation, four bolts on the flange are removed, the vertical guide pipe in the wellhead production process is turned upwards, an old cushion on the inlet pipeline flange and an old cushion on the outlet pipeline return pressure gate in the wellhead production process are removed, new gaskets are added at the inlet and outlet of the pipeline, and the inlet and outlet pipelines of the calibration and measurement vehicle are connected with the inlet and outlet pipelines of the wellhead production process. After the production calibration is completed, the inlet and outlet pipelines of the calibration and measurement vehicle are disassembled, the process is insulated again, and the original wellhead production process is recovered. Each time of connection of the calibration and measurement vehicle needs 2 persons to cooperate, and the disassembly and the assembly of a plurality of flange bolts generally take about 60 minutes. For the heat-insulating well head in winter, the workload is larger, the labor intensity is higher, and the production time rate of the oil well is seriously reduced.
The problem of connecting the calibration and measurement vehicle at the wellhead needs to be improved urgently.
Disclosure of Invention
The utility model aims at providing a measurement car connecting device is markd to the well head solves and marks the unable lug connection's of measurement car and well head production flow problem at present, improves work efficiency, reduces workman's intensity of labour.
The technical solution of the utility model is that:
the well mouth calibration measuring vehicle connecting device comprises a central pipe and an outer pipe, wherein the central pipe is arranged in the outer pipe, a liquid outlet hole, a connecting step and a liquid return joint are arranged on a pipe body of the outer pipe, an internal thread is arranged at one end of the outer pipe, a sealing partition table is arranged in an inner cavity of the other end of the outer pipe, and a sealing element and a bearing or an end cap are arranged on the outer side of the sealing partition table; the outer thread is arranged at one end of the central tube and is provided with a baffle nut, a fixed baffle and a sealing barrel, the outer thread at one end of the central tube is connected with the outer tube, and the other end of the central tube is provided with a liquid outlet joint and is provided with a tensioning nut.
The connection step is provided with external threads and can be connected with a port of a connecting end of the production process of a wellhead, a force application side is further arranged on the outer side of the connection step, and a liquid outlet hole is formed in a pipe body of an outer pipe on the inner side of the connection step.
The internal thread of outer tube one end is established at the centre bore, and the baffle nut, fixed stop and the sealed section of thick bamboo of center tube one end installation all adorn in the outside of outer tube, and the taut nut of center tube other end installation also adorns in the outer tube outside.
And an anti-rotation block is arranged on the outer side of the tensioning nut.
The liquid return joint is radially arranged on the pipe body of the outer pipe and located outside the sealing step and can be connected with a backflow pipeline of the wellhead calibration metering vehicle, and the liquid outlet joint at one end of the central pipe can be connected with a liquid inlet pipeline of the wellhead calibration metering vehicle.
The outer diameter of the sealing cylinder before expansion is set between 45mm and 60 mm.
The inner side of the tensioning nut is provided with a pressing platform, the outer diameter of the pressing platform is matched with the inner diameter of the outer pipe, and when the bearing is installed in the outer pipe, the pressing platform just presses the outer end face of the bearing.
And sealing rings are arranged at the outer ends of the inner cavities of the liquid return joint and the liquid outlet joint.
The utility model discloses a show the result of use and be:
this device is installed at well head production flow operation link port, is connected promptly in the plug junction, and under the condition of having fallen well head production flow, lift the plug off, can with the utility model discloses install in plug department, the outer tube is fixed promptly. And (3) outwards rotating the tightening nut by using a spanner, tightening the central pipe, outwards moving the central pipe, and expanding the sealing cylinder under the extrusion of the baffle and the outer pipe. The increase of a sealed diameter has sealed the annular space between the well head production pipeline at well head production flow operation link rear and the outer tube, with the well head mark the backflow pipeline and the feed liquor pipeline of measurement car respectively with the utility model discloses a liquid return connects and goes out the liquid joint and connect well, pours well head production flow, can open a well and measure single well output.
The liquid coming out of the oil well can only pass through the central pipe and enter the calibration metering vehicle, and the metered liquid enters the outer pipe from the liquid return joint through the backflow pipeline and enters the wellhead production pipeline behind the operation connecting end port of the wellhead production flow through the liquid outlet hole. The connection work of the calibration metering vehicle and the wellhead production flow can be completed without disassembling the wellhead production flow. The operation can be finished in 5 minutes, the labor intensity of workers is low, the operation efficiency is high, and the production timeliness of the oil well is improved.
Wellhead production line of oil well Christmas tree is divided into 2 inches and 2 inches1/2The two types of inches are adopted, and the sizes of the connecting end ports of the wellhead production process are the same, so that the sealing device can be applied to wellhead production pipelines with different diameters as long as sealing cylinders with different outer diameters are installed in the device, and the device has good universality.
To sum up, the utility model discloses simple structure, convenient operation has avoided the vexed and complicated operation of dismantling well head production procedure, greatly reduced workman's intensity of labour, have apparent result of use and using value. The concrete points are as follows:
1. the well mouth production flow does not need to be disassembled by using the tool, so that the potential safety hazard of construction is reduced.
2. The leakage of crude oil of a wellhead production pipeline is reduced, and the environment is protected.
3. The device is simple to install and use, reduces the labor intensity of workers and improves the working efficiency.
4. The aging of the oil well is improved, and better economic benefit can be created.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises a baffle nut 1, a sealing barrel 2, a liquid outlet hole 3, a connecting step 4, a force application square 5, a sealing partition table 6, a sealing piece 7, a bearing 8, a liquid outlet joint 9, an anti-rotation clamping square 10, a tensioning nut 11, a liquid return joint 12, a central tube 13, an outer tube 14 and a baffle 15.
Detailed Description
The drawings are for reference and illustration purposes only and are not intended to limit the scope of the present disclosure. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the connecting device of the wellhead calibration metering vehicle comprises a central pipe 13 and an outer pipe 14, wherein the central pipe 13 is installed inside the outer pipe 14, a liquid outlet hole 3, a connecting step 4 and a liquid return joint 12 are arranged on a pipe body of the outer pipe 14, an internal thread is arranged at one end of the outer pipe 14, a sealing partition table 6 is arranged in an inner cavity of the other end of the outer pipe 14, and a sealing element 7 and a bearing 8 or an end cap are arranged on the outer side of the sealing; and one end of the central tube 13 is provided with external threads and is provided with a baffle nut 1, a fixed baffle 15 and a sealing barrel 2, the external threads of one end of the central tube 13 are connected with the outer tube 14, and the other end of the central tube is provided with a liquid outlet joint 9 and is provided with a tensioning nut 11. The outside of the sealing platform 6 is preferably provided with bearings 8 to allow smooth rotation of the central tube 13.
On the basis of the first embodiment, the utility model discloses still have following embodiment:
example two
Connect step 4 and be equipped with the external screw thread, can be connected with well head production flow operation connection end port, the outside of this connection step 4 still is equipped with application of force side 5, and liquid outlet 3 establishes on the body of connecting the inboard outer tube 14 of step 4. Force application side 5 can be flat side, four directions, hexagonal etc. and is convenient the utility model discloses the operation when installing at well head production procedure operation link port if do not establish this force application side 5, also can use the body that the breakout tongs gripped outer tube 14 to rotate. The connecting end port of the wellhead production process operation is set for operations such as well washing operation, sampling, dosing and the like, the size of the port is uniform, and the port is provided with a plug. After the plug is dismantled, this port can with the utility model provides a be connected step 4, can emit the production liquid in the well for measure oil well output.
The internal thread of one end of the outer pipe 14 is arranged in the central hole, the baffle nut 1, the fixed baffle 15 and the sealing cylinder 2 which are arranged at one end of the central pipe 13 are all arranged outside the outer pipe 14, and the tensioning nut 11 which is arranged at the other end of the central pipe 13 is also arranged outside the outer pipe 14.
EXAMPLE III
And an anti-rotation block 10 is also arranged on the outer side of the tensioning nut 11. When the tightening nut 11 is rotated and the central tube 13 is rotated outwards, the sealing cylinder 2 is enabled to extrude and expand the inner cavity of the production pipeline behind the production process operation connecting end of the sealed wellhead, the anti-rotation block 10 can be blocked by a tool, and operation is convenient. If the rotation-preventing clamp 10 is not provided, the body of the central tube 13 can be clamped by using a tube clamp to prevent the rotation.
The liquid return joint 12 is radially arranged on the pipe body of the outer pipe 14, is positioned outside the sealing step 4 and can be connected with a backflow pipeline of the wellhead calibration metering vehicle, and the liquid outlet joint 9 at one end of the central pipe 13 can be connected with a liquid inlet pipeline of the wellhead calibration metering vehicle.
Example four
The sealing cylinder 2 is set to have an outer diameter of 45mm to 60mm before expansion, and can be used in production lines of different diameters.
EXAMPLE five
The inner side of the tightening nut 11 is provided with a pressing platform, the outer diameter of the pressing platform is matched with the inner diameter of the outer tube 14, and when the bearing 8 is installed in the outer tube 14, the pressing platform just presses the outer end face of the bearing 8.
And the outer ends of the inner cavities of the liquid return joint 12 and the liquid outlet joint 9 are respectively provided with a sealing ring.
Under the condition of having fallen well head production flow, lift the plug off, will the utility model discloses install the plug department at well head production flow operation link, outer tube 14 is fixed promptly. The central tube 13 is pulled by turning the tightening nut 11 outwards by a wrench, so that the central tube 13 moves outwards and the sealing cylinder 2 expands under the compression of the baffle 15 and the outer tube 14. The diameter of the sealing barrel 2 is increased, and an annular space between a wellhead production pipeline behind the connecting end port of the wellhead production process and the outer pipe 14 is sealed. With the well head demarcation measuring truck's backflow line and feed liquor pipeline respectively with the utility model discloses a liquid return connects 12 and goes out liquid joint 9 and be connected, pours well head production flow, can open a well and measure single well output.
The embodiments described above are merely exemplary embodiments, but the present invention is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and teaching of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and modifications can be made, and equivalents can be substituted for elements thereof. Any modification, equivalent replacement, improvement and the like made within the spirit and the concept of the present invention should be included in the protection scope of the present invention. The scope of protection is therefore not limited to the description above.
Claims (8)
1. The well mouth marks the connecting device of the metering car, its characteristic is, including center tube and outer tube, the center tube is installed in outer tube, there are liquid outlet holes, connection step and liquid return joint on the body of the outer tube, one end of the outer tube has female threads, another end cavity has sealed separating platforms, the outside of the sealed separating platform is equipped with sealing element and bearing or end cap; the outer thread is arranged at one end of the central tube and is provided with a baffle nut, a fixed baffle and a sealing barrel, the outer thread at one end of the central tube is connected with the outer tube, and the other end of the central tube is provided with a liquid outlet joint and is provided with a tensioning nut.
2. The wellhead calibration and measurement vehicle connecting device as claimed in claim 1, wherein the connecting step is provided with external threads and can be connected with a connecting end port of wellhead production process operation, a force application part is further arranged on the outer side of the connecting step, and the liquid outlet hole is formed in a pipe body of the outer pipe on the inner side of the connecting step.
3. A wellhead calibration and measurement vehicle connection device as claimed in claim 1 or 2, wherein the internal thread at one end of the outer tube is provided in the central bore, the baffle nut, the fixed baffle and the sealing cylinder mounted at one end of the central tube are mounted on the outside of the outer tube, and the tension nut mounted at the other end of the central tube is also mounted on the outside of the outer tube.
4. A wellhead calibration and measurement vehicle connection device as claimed in claim 3, wherein the outside of said tension nut is further provided with an anti-rotation block.
5. The wellhead calibration measuring vehicle connecting device as claimed in claim 1, wherein the liquid return joint is arranged on the pipe body of the outer pipe radially and is positioned outside the sealing step and can be connected with a return pipeline of the wellhead calibration measuring vehicle, and the liquid outlet joint at one end of the central pipe can be connected with a liquid inlet pipeline of the wellhead calibration measuring vehicle.
6. A wellhead calibration and measurement vehicle connection as claimed in claim 3 wherein the outside diameter of the sealing cartridge before expansion is set between 45mm and 60 mm.
7. A wellhead calibration and measurement vehicle connection device as claimed in claim 3, wherein the tension nut is provided on its inside with a pressure pad having an outer diameter corresponding to the inner diameter of the outer tube, and when a bearing is mounted in the outer tube, it is pressed against the outer end face of the bearing.
8. A wellhead calibration and measurement vehicle connection device as claimed in claim 1 or 5, wherein the outer ends of the inner cavities of the liquid return joint and the liquid outlet joint are provided with sealing rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921819410.3U CN210829228U (en) | 2019-10-28 | 2019-10-28 | Well head calibration metering vehicle connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921819410.3U CN210829228U (en) | 2019-10-28 | 2019-10-28 | Well head calibration metering vehicle connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210829228U true CN210829228U (en) | 2020-06-23 |
Family
ID=71279224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921819410.3U Active CN210829228U (en) | 2019-10-28 | 2019-10-28 | Well head calibration metering vehicle connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210829228U (en) |
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2019
- 2019-10-28 CN CN201921819410.3U patent/CN210829228U/en active Active
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