Offshore thermal recovery wellhead displacement measuring device
By designing a displacement measurement device for offshore thermal production wellheads, the displacement of the oil production tree is monitored by using magnetic flip plates and magnetostrictive sensor probes, the hazards caused by the lifting of the oil production tree at offshore thermal production wellheads are solved, real-time monitoring and efficient observation are achieved .
Patent Information
- Application Number
- CN202421181912.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
In offshore thermal wellheads, the steam-filled oil production trees may have lifting and rushing, resulting in serious harm in the lifting of the wellhead, which may cause deformation and damage to production pipes, damage to pipelines, and excessive flange stress, resulting in steam leakage and wellbore sealing Failure will lead to oil and gas leakage and marine environmental pollution.
Design a sea thermal wellhead displacement measurement device, including a cylinder, a magnetic flip plate and a magnetostrictive sensor probe rod, which drives the three-color magnetic flip plate flip and the magnetostrictive sensor probe rod of the magnetic flip plate to move through the sliding of the piston assembly. , monitor the displacement of the oil recovery tree in real time, and transmit signals to the terminal equipment through sensors.
Real-time monitoring of the lifting displacement of the oil production tree is realized. Through the display of sensors and magnetic flip plates, it is convenient to observe and judge the displacement on site, improve the efficiency of sea observation, and avoid potential hazards and environmental pollution caused by wellhead lift.
Smart Images
Figure CN222460579U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of offshore petroleum engineering, and in particular relates to an offshore thermal recovery wellhead displacement measuring device. Background Art
[0002] With the increasing demand for oil and gas resources due to my country's economic development, some oil fields that were not developed due to viscosity constraints have been developed in recent years. Thermal recovery of heavy oil is the main way to develop heavy oil at home and abroad. Thermal recovery of heavy oil is to inject high-pressure steam into the oil layer to increase the temperature of the reservoir and reduce the viscosity of crude oil to achieve the purpose of extraction.
[0003] During steam injection on an offshore thermal production platform, the steam-injected Christmas tree may be lifted and moved upward due to some uncontrollable factors. The wellhead lifting is very harmful. At the very least, the production manifold may be deformed and damaged. At worst, the pipeline may be damaged, the flange may be subjected to excessive stress, causing steam leakage, the wellbore integrity seal may fail, and oil and gas leakage may cause marine environmental pollution.
[0004] Therefore, it is urgent to design an offshore thermal recovery wellhead displacement measurement device to solve the above-mentioned problem of thermal recovery wellhead displacement measurement. Utility Model Content
[0005] In order to solve the technical problems mentioned in the background technology that the steam-injected oil tree may rise and move upward, the wellhead lifting may cause serious damage, such as deformation and damage of the production manifold, damage to the pipeline, excessive stress on the flange causing steam leakage, and failure of the wellbore integrity seal, an offshore thermal recovery wellhead displacement measurement device is provided to solve the problem of thermal recovery wellhead displacement measurement.
[0006] In order to achieve the above-mentioned purpose, the specific technical scheme of the offshore thermal recovery wellhead displacement measurement device of the utility model is as follows:
[0007] An offshore thermal recovery wellhead displacement measuring device comprises a cylinder and a magnetic flap, wherein the magnetic flap is fixedly connected to the outer wall of the cylinder, a piston assembly is slidably arranged in the cylinder, a spring is arranged between the piston assembly and the cylinder upper cover, a piston rod is connected to the piston assembly, the piston rod abuts against a platform, the outer wall of the cylinder is connected to an oil production tree, a sensor is connected to the cylinder, a magnetostrictive sensor probe of the sensor is arranged in the cylinder, the piston assembly slides to move the magnetostrictive sensor probe and flip the magnetic flap of the magnetic flap, and three-color magnetic flaps are arranged in sequence on the magnetic flap to display the displacement of the oil production tree accordingly.
[0008] Furthermore, the cylinder comprises a large cavity and a small cavity, the small cavity is connected to the outer wall of the large cavity, a spring and a piston assembly are arranged in the large cavity, and a magnetostrictive sensor probe rod is slidably arranged in the small cavity.
[0009] Furthermore, an upper cover is provided at one end of the large cavity, a sensor is provided on the upper cover, a spring and a piston assembly are provided in sequence in the large cavity, and two ends of the spring are respectively in contact with the upper cover and the piston assembly.
[0010] Furthermore, the piston assembly includes a piston gasket, a magnetic ring and a piston ring sheet, which are arranged on one end of the piston rod through fastening bolts, the spring abuts against the piston gasket, and the piston rod is provided with a piston rod head, which abuts against the platform.
[0011] Furthermore, the outer wall of the large cavity is connected to a magnetic flap base, a magnetic flap is provided on the magnetic flap base, and the magnetic ring slides along the length direction of the large cavity to flip the magnetic flap of the magnetic flap.
[0012] Furthermore, the magnetic flip plate on the magnetic flip plate is provided with three color segments, the magnetic flip plates of the three color segments are rotated and connected to the magnetic flip plate in sequence, and the magnetic ring moves so that the magnetic flip plates of the three color segments are flipped correspondingly.
[0013] Furthermore, the magnetostrictive sensor probe rod is slidably arranged along the length direction of the small cavity, and the magnetic ring moves to make the magnetostrictive sensor probe rod slide.
[0014] Furthermore, a bottom cover is provided at one end of the large cavity away from the upper cover, and a piston rod is slidably provided on the bottom cover to slide and limit the piston gasket, magnetic ring and piston ring sheet on the piston rod.
[0015] Furthermore, a limit piece is provided on the inner wall of the large cavity, and the spring, piston gasket, magnetic ring and piston ring sheet are all abutted against the limit piece, so that the spring, piston gasket, magnetic ring and piston ring sheet can move up and down in the vertical direction.
[0016] Furthermore, a bracket is connected to the outer wall of the large cavity, and one end of the bracket away from the large cavity is connected to the Christmas tree.
[0017] The offshore thermal recovery wellhead displacement measuring device of the utility model has the following advantages:
[0018] The piston assembly is slidably arranged in the cylinder, and a magnetic flap and a magnetostrictive sensor probe are arranged on the cylinder, so that the piston assembly slides to drive the three-color magnetic flap of the magnetic flap to flip accordingly, and drives the magnetostrictive sensor probe to move, the cylinder is connected to the Christmas tree, the piston rod of the piston assembly abuts on the platform, the Christmas tree moves, and the displacement of the Christmas tree is transmitted to the terminal equipment through the sensor, and the flipping of the three-color magnetic flap of the magnetic flap facilitates the inspection personnel to judge the displacement of the Christmas tree. The present application monitors the displacement of the Christmas tree lifting in real time, not only can the signal be transmitted to the central control through the sensor, but also it is convenient to observe the parameters on site, which greatly facilitates the efficiency of offshore observation. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1This is a cross-sectional view of the offshore thermal recovery wellhead displacement measurement device of the utility model;
[0020] Figure 2 This is a front view of the offshore thermal recovery wellhead displacement measuring device of the utility model;
[0021] Figure 3 It is a stereoscopic diagram of the piston assembly of the offshore thermal recovery wellhead displacement measuring device of the utility model;
[0022] Figure 4 This is a stereoscopic diagram of the offshore thermal recovery wellhead displacement measuring device of the utility model;
[0023] Figure 5 It is a top view of the large cavity of the offshore thermal recovery wellhead displacement measurement device of the utility model.
[0024] Description of the markings in the figure:
[0025] 1. Large cavity; 2. Small cavity; 3. Magnetic flap; 4. Upper cover; 5. Spring; 6. Piston rod; 7. Piston rod head; 8. Sensor; 9. Magnetic flap; 10. Piston gasket; 11. Magnetic ring; 12. Piston ring sheet; 13. Magnetic flap base; 14. Bottom cover; 15. Bracket. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0027] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.
[0028] Please refer to the attached Figure 1 To Attachment Figure 5 The utility model describes an offshore thermal recovery wellhead displacement measuring device.
[0029] like Figure 1As shown, the offshore thermal recovery wellhead displacement measuring device in the utility model includes a cylinder and a magnetic flap 3, the magnetic flap 3 is fixedly connected to the outer wall of the cylinder, a piston assembly is slidably arranged in the cylinder, a spring 5 is arranged between the piston assembly and the cylinder upper cover 4, a piston rod 6 is connected to the piston assembly, the piston rod 6 abuts on the platform, the outer wall of the cylinder is connected to the oil production tree, a sensor 8 is connected to the cylinder, a magnetostrictive sensor probe of the sensor 8 is arranged in the cylinder, the piston assembly slides to move the magnetostrictive sensor probe and flip the magnetic flap 9 of the magnetic flap 3, and three-color magnetic flaps 9 are arranged in sequence on the magnetic flap 3 to display the displacement of the oil production tree accordingly. The piston assembly is slidably arranged in the cylinder, and the magnetic flap 3 and the magnetostrictive sensor probe are arranged on the cylinder, so that the piston assembly slides to drive the three-color magnetic flap 9 of the magnetic flap 3 to flip accordingly, and drive the magnetostrictive sensor probe to move, the cylinder is connected to the Christmas tree, the piston rod of the piston assembly abuts on the platform, the Christmas tree moves, and the displacement of the Christmas tree is transmitted to the terminal device through the sensor 8, and the three-color magnetic flap 9 of the magnetic flap 3 flips to facilitate the inspection personnel to judge the displacement of the Christmas tree. The present application monitors the displacement of the Christmas tree lifting in real time, not only can the signal be transmitted to the central control through the sensor 8, but also it is convenient to observe the parameters on site, which greatly facilitates the efficiency of offshore observation.
[0030] Further, if Figures 1 to 3 As shown, the cylinder includes a large cavity 1 and a small cavity 2, the small cavity 2 is connected to the outer wall of the large cavity 1, a spring 5 and a piston assembly are arranged in the large cavity 1, and a magnetostrictive sensor probe is slidably arranged in the small cavity 2; an upper cover 4 is arranged at one end of the large cavity 1, a sensor 8 is arranged on the upper cover 4, a spring 5 and a piston assembly are arranged in sequence in the large cavity 1, and both ends of the spring 5 are respectively abutted against the upper cover 4 and the piston assembly; the piston assembly includes a piston gasket 10, a magnetic ring 11 and a piston ring sheet 12, the piston gasket 10, the magnetic ring 11 and the piston ring sheet 10 are arranged at one end of the piston rod 6 by fastening bolts, the spring 5 abuts on the piston gasket 10, the piston rod 6 is provided with a piston rod head 7, and the piston rod head 7 abuts on the platform.
[0031] In this embodiment, a small cavity 2 is connected to a large cavity 1, a magnetostrictive sensor probe of a sensor 8 is slidably disposed in the small cavity 2, a spring 5 and a piston assembly are sequentially disposed in the large cavity 1, an upper cover 4 is disposed at one end of the large cavity 1, and the sensor 8 is disposed on the upper cover 4, and the displacement parameters generated by the movement of the magnetostrictive sensor probe are converted into 4~20mA signals and transmitted to the central control. Preferably, the product supports HART protocol communication mode, the main variables are transmitted by 4~20mA, and the measurement, process parameters, configuration, calibration, and diagnostic information can be transmitted through the HART protocol.
[0032] The two ends of the spring 5 are respectively abutted against the upper cover 4 and the piston assembly, so that the piston rod 6 connected to the piston assembly always abuts against the platform; the piston assembly includes a piston gasket 10, a magnetic ring 11 and a piston ring sheet 12, and the piston gasket 10, the magnetic ring 11 and the piston ring sheet 10 are fixed to one end of the piston rod 6 by multiple fastening bolts. A piston rod head 7 is provided at the end of the piston rod 6 away from the spring 5, so that the piston rod head 7 always abuts against the platform.
[0033] Further, if Figure 1 and Figure 5 As shown, the outer wall of the large cavity 1 is connected to a magnetic flap base 13, on which a magnetic flap 3 is provided, and a magnetic ring 11 slides along the length direction of the large cavity 1 to flip the magnetic flap 9 of the magnetic flap 3; the magnetic flap 9 on the magnetic flap 3 is provided with three color segments, and the magnetic flaps 9 of the three color segments are rotated and connected to the magnetic flap 3 in turn, and the magnetic ring 11 moves to flip the magnetic flaps 9 of the three color segments accordingly; the magnetostrictive sensor probe rod is slidably arranged along the length direction of the small cavity 2, and the magnetic ring 11 moves to slide the magnetostrictive sensor probe rod.
[0034] In this embodiment, a magnetic flap base 13 is provided on the outer wall of the large cavity 1, and a magnetic flap 3 is connected to the magnetic flap base 13. When the magnetic ring 11 moves up and down in the vertical direction, the magnetic ring 11 drives the magnetic flap 9 of the magnetic flap 3 to flip. Preferably, the magnetic flap 3 is provided with a green magnetic flap 9, a yellow magnetic flap 9 and a red magnetic flap 9 from bottom to top. When the magnetic ring 11 moves to flip the green magnetic flap 9, it means that the displacement of the oil tree is in a reasonable range; when the magnetic ring 11 moves to flip the yellow magnetic flap 9, it means that the displacement of the oil tree is in a warning range; when the magnetic ring 11 moves to flip the red magnetic flap 9, it means that the displacement of the oil tree is in a dangerous range, so that on-site inspectors can easily judge the displacement of the oil tree by the color of the magnetic flap 9.
[0035] At the same time, the movement of the magnetic ring 11 drives the magnetostrictive sensor probe to slide, and the magnetostrictive sensor 8 can perform high-precision measurements with a measurement accuracy of no less than 3 mm, and monitor in real time.
[0036] Further, if Figure 1 and Figure 4 As shown, a bottom cover 14 is provided at one end of the large cavity 1 away from the upper cover 4, and a piston rod 6 is slidably provided on the bottom cover 14 to limit the sliding of the piston gasket 10, the magnetic ring 11 and the piston ring sheet 12 on the piston rod 6; a limit piece is provided on the inner wall of the large cavity 1, and the spring 5, the piston gasket 10, the magnetic ring 11 and the piston ring sheet 12 are all abutted against the limit piece, so that the spring 5, the piston gasket 10, the magnetic ring 11 and the piston ring sheet 12 can move up and down in the vertical direction; a bracket 15 is connected to the outer wall of the large cavity 1, and the bracket 15 is connected to the Christmas tree at one end away from the large cavity 1.
[0037] In this embodiment, a bottom cover 14 is provided at one end of the large cavity 1 away from the upper cover 4, and a positioning pin hole is provided on the bottom cover 14, so that the piston rod 6 is slidably set in the positioning pin hole. Preferably, breathing holes are provided on both the upper cover 4 and the bottom cover 14, so that the friction resistance of the piston gasket 10, the magnetic ring 11 and the piston ring sheet 12 to make reciprocating motion in the large cavity 1 is reduced, thereby increasing the service life of the overall equipment.
[0038] A limit piece is provided on the inner wall of the large cavity 1, and the spring 5, piston gasket 10, magnetic ring 11 and piston ring sheet 12 are all abutted against the limit piece. Preferably, the limit piece is an embedded PTFE filler, so that the spring 5, piston gasket 10, magnetic ring 11 and piston ring sheet 12 can slide in the vertical direction; a bracket 15 is connected to the outer wall of the large cavity 1, and the bracket 15 is connected to the oil production tree. The piston rod head 7 is abutted against the platform and is stationary relative to the platform. The upward movement of the oil production tree will drive the large cavity 1 to move synchronously, that is, by measuring the relative displacement of the piston assembly and the large cavity 1, the displacement of the oil production tree and the platform can be obtained.
[0039] The working principle of the offshore thermal recovery wellhead displacement measurement device in the utility model is as follows:
[0040] The large cavity 1 is connected to the Christmas tree through the bracket 15. The piston rod 6 slidably arranged in the large cavity 1 is abutted on the platform through the piston rod head 7. The piston rod 6 is kept stationary relative to the platform through the spring 5. When the Christmas tree is displaced, the magnetic ring 11 drives the magnetic flap 9 to flip and drives the magnetostrictive sensor probe to move. The on-site personnel judge the displacement of the Christmas tree by observing the flip color segment of the magnetic flap 9. The magnetostrictive sensor probe transmits the Christmas tree displacement information to the rear central control through the sensor 8.
[0041] Based on the offshore thermal recovery wellhead displacement measurement device, the utility model slides a piston gasket 10, a magnetic ring 11 and a piston ring sheet 12 in a large cavity 1, and sets a magnetic flap 3 and a magnetostrictive sensor probe on the large cavity 1, so that the magnetic ring 11 slides and drives the three-color magnetic flap 9 of the magnetic flap 3 to flip accordingly, and drives the magnetostrictive sensor probe to move, the large cavity 1 is connected to the Christmas tree, the piston rod 6 of the piston assembly abuts on the platform, the Christmas tree moves, and the displacement of the Christmas tree is transmitted to the terminal device through the sensor 8, and the flipping of the three-color magnetic flap 9 of the magnetic flap 3 facilitates the inspection personnel to judge the displacement of the Christmas tree. The present application monitors the displacement of the Christmas tree lifting in real time, not only can the signal be transmitted to the central control through the sensor, but also it is convenient to observe the parameters on site, which greatly facilitates the efficiency of offshore observation.
[0042] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. An offshore thermal recovery wellhead displacement measurement device, characterized in that: It includes a cylinder and a magnetic flap, the magnetic flap is fixedly connected to the outer wall of the cylinder, a piston assembly is slidably arranged in the cylinder, a spring is arranged between the piston assembly and the upper cover of the cylinder, a piston rod is connected to the piston assembly, the piston rod abuts against the platform, the outer wall of the cylinder is connected to the Christmas tree, a sensor is connected to the cylinder, a magnetostrictive sensor probe rod of the sensor is arranged in the cylinder, the piston assembly slides to move the magnetostrictive sensor probe rod and flip the magnetic flap of the magnetic flap, and three-color magnetic flaps are arranged in sequence on the magnetic flap to display the displacement of the Christmas tree accordingly.
2. The offshore thermal recovery wellhead displacement measurement device according to claim 1, characterized in that: The cylinder comprises a large cavity and a small cavity, the small cavity is connected to the outer wall of the large cavity, a spring and a piston assembly are arranged in the large cavity, and a magnetostrictive sensor probe rod is slidably arranged in the small cavity.
3. The offshore thermal recovery wellhead displacement measuring device according to claim 2, characterized in that: An upper cover is arranged at one end of the large cavity, a sensor is arranged on the upper cover, a spring and a piston assembly are arranged in sequence in the large cavity, and two ends of the spring are respectively in contact with the upper cover and the piston assembly.
4. The offshore thermal recovery wellhead displacement measurement device according to claim 1, characterized in that: The piston assembly includes a piston gasket, a magnetic ring and a piston ring sheet, which are arranged at one end of the piston rod through fastening bolts. The spring abuts against the piston gasket. The piston rod is provided with a piston rod head, which abuts against the platform.
5. The offshore thermal recovery wellhead displacement measuring device according to claim 3, characterized in that: The outer wall of the large cavity is connected with a magnetic flap base, on which a magnetic flap is arranged, and the magnetic ring slides along the length direction of the large cavity to flip the magnetic flap of the magnetic flap.
6. The offshore thermal recovery wellhead displacement measuring device according to claim 5, characterized in that: The magnetic flip plate on the magnetic flip plate is provided with three color segments, and the magnetic flip plates of the three color segments are rotated and connected to the magnetic flip plate in sequence, and the magnetic ring moves to make the magnetic flip plates of the three color segments flip accordingly.
7. The offshore thermal recovery wellhead displacement measurement device according to claim 2, characterized in that: The magnetostrictive sensor probe rod is slidably arranged along the length direction of the small cavity, and the magnetic ring moves to make the magnetostrictive sensor probe rod slide.
8. The offshore thermal recovery wellhead displacement measuring device according to claim 5, characterized in that: A bottom cover is arranged at one end of the large cavity away from the upper cover, and a piston rod is slidably arranged on the bottom cover to slide and limit the piston gasket, magnetic ring and piston ring sheet on the piston rod.
9. The offshore thermal recovery wellhead displacement measuring device according to claim 8, characterized in that: A limiting piece is arranged on the inner wall of the large cavity, and the spring, the piston gasket, the magnetic ring and the piston ring piece are all in contact with the limiting piece, so that the spring, the piston gasket, the magnetic ring and the piston ring piece can move up and down in the vertical direction.
10. The offshore thermal recovery wellhead displacement measuring device according to claim 9, characterized in that: The outer wall of the large cavity is connected with a bracket, and one end of the bracket away from the large cavity is connected to the Christmas tree.