Oil well optical fiber temperature monitoring device for oil exploration

Abstract

The invention discloses an oil well optical fiber temperature monitoring device for oil exploration, and belongs to the technical field of oil exploration, the oil well optical fiber temperature monitoring device comprises an oil pipe, an optical cable body and a temperature measurement optical transceiver used for connecting the optical cable body, and the optical cable body is fixedly arranged on the outer side of the oil pipe through a binding piece. The cleaning assembly is used for cleaning an optical cable body; and the cleaning assembly comprises a shell, a flushing part and a winding cleaning part, and the flushing part and the winding cleaning part are arranged in the shell. By arranging the flushing part and the winding cleaning part, the optical cable body is cleaned in all directions, a flushing pipe of the flushing part is fixed to the inner top face of the shell, the flushing pipe is connected with external water supply equipment, clear water is sprayed to the surface of the optical cable body through a spray head, surface stains can be effectively removed, and a cleaning belt in the winding cleaning part can be spirally wound around the outer side of the optical cable body; and when the optical cable body is wound, the cleaning belt wipes the optical cable body, so that the problem of winding interference of the cleaning belt is avoided, and the cleaning effect is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum exploration, and in particular to an oil well optical fiber temperature monitoring device used for petroleum exploration. Background Art

[0002] In the field of oil exploration, accurate monitoring of oil well temperature is crucial to understanding reservoir dynamics, optimizing mining plans, and ensuring production safety. With the development of fiber optic sensing technology, oil well fiber optic temperature monitoring has gradually become an important monitoring method. However, existing oil well fiber optic temperature monitoring devices still face many problems in practical applications.

[0003] The oil well environment is complex and harsh, and the optical cable will be exposed to various impurities such as oil, mud and sand in the well. First of all, the crude oil in the well is sticky and easily adheres to the surface of the optical cable, forming a thick layer of oil. Then a large amount of mud and sand particles will mix with the oil and adhere tightly to the outer sheath of the optical cable. After drying on the surface of the optical cable, they will form dirt that is difficult to clean. The long-term accumulation of these pollutants will have a serious impact on the performance of the optical cable. Therefore, it is necessary to clean it when the optical cable is recovered. Existing monitoring devices usually lack effective optical cable cleaning measures, or the cleaning method is too simple to meet actual needs, which increases the equipment maintenance cost and replacement frequency. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems and to propose an oil well optical fiber temperature monitoring device for oil exploration.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An oil well optical fiber temperature monitoring device for oil exploration comprises an oil pipe, an optical cable body and a temperature measuring optical terminal for connecting the optical cable body, wherein the optical cable body is fixedly arranged on the outside of the oil pipe by a binding member, and further comprises: An optical cable reel with a base: the optical cable reel is rotatably mounted on the upper end of the base, a guide wheel for guiding the optical cable body is provided on one side of the base, and a clamping groove for clamping and fixing one end of the optical cable body is provided on the inner side of the optical cable reel; A cleaning component for cleaning an optical cable body: the cleaning component comprises a shell, a flushing component and a winding cleaning component arranged inside the shell, the shell having a rectangular groove for the optical cable body to pass through on one side close to the optical cable winding reel, and a through hole for the optical cable body to pass through on the other end.

[0006] As a further description of the above technical solution: The flushing component comprises a flushing pipe fixedly arranged on the top surface of the shell, one end of the flushing pipe passes through the outside of the shell and is connected with an external water supply device through a pipeline.

[0007] As a further description of the above technical solution: The winding cleaning piece includes a cleaning belt, a mounting shaft and a fixed ring arranged on the inner wall of the shell, the inner wall of the shell is provided with a reel for winding and rewinding the cleaning belt, the other end of the cleaning belt is connected to one end of the mounting shaft, the outer side of the fixed ring is provided with a rotating ring with an outer gear ring, the fixed ring and the through hole are located on the same axis, the inner wall of the shell is provided with two mounting grooves, the two mounting grooves are respectively provided with racks that cooperate with the upper and lower ends of the outer gear ring for sliding, the two mounting grooves are respectively provided with electric push rods for driving the racks to move in the opposite direction, one side of the rotating ring is provided with an mounting cavity for the mounting shaft to slide into and install, the other end of the mounting shaft is provided with a guide rod, the surface of the fixed ring is provided with a second spiral groove that cooperates with the guide rod, and the inner wall of the mounting cavity is provided with a sliding groove for the guide rod to slide.

[0008] As a further description of the above technical solution: The shell body includes a lower shell and an upper shell, and the lower shell and the upper shell are hingedly matched by a reset hinge. A connecting ring matching with the fixed ring is provided on one side of the rotating ring. The connecting ring is composed of two connecting half rings. A plurality of connecting bolts matching with the annular groove are penetrated by threads on the surface of the connecting ring. An annular groove is provided on the end face of the fixed ring. The fixed ring is composed of two fixed half rings, and the rotating ring is composed of two rotating half rings, and tooth grooves matching with the racks are provided on the outer surfaces of the two rotating half rings. A restraining member matching with the upper shell is provided inside the lower shell.

[0009] As a further description of the above technical solution: The restraining member includes a movable plate slidably arranged inside the lower shell and a rotating shaft penetrating the side wall of the lower shell. The movable plate is connected to the inner wall of the lower shell through a spring. A pressure block squeezed by a rack is provided on one side of the movable plate. A fixed sleeve is provided on one side of the movable plate. A protrusion is provided on the inner wall of the fixed sleeve. A first spiral groove that cooperates with the protrusion is opened on the surface of the rotating shaft. An extrusion plate for squeezing the upper shell to close it is provided at one end of the rotating shaft.

[0010] As a further description of the above technical solution: The spring rate is greater than the spring rate of the return hinge.

[0011] As a further description of the above technical solution: The plurality of connecting bolts are distributed in a circular array, and one end of the plurality of connecting bolts is smooth and has a rounded corner.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: In the present invention, by arranging a flushing part and a winding cleaning part, the optical cable body is cleaned in all directions. The flushing pipe of the flushing part is fixed on the top surface of the shell body, and is connected to an external water supply device to spray clean water through a nozzle onto the surface of the optical cable body, which can effectively remove surface stains. The cleaning belt in the winding cleaning part can be spirally wound around the outside of the optical cable body. When the optical cable body is rolled up, the cleaning belt wipes it, avoiding the problem of winding interference of the cleaning belt and significantly improving the cleaning effect.

[0013] In the present invention, the housing adopts a method in which the lower housing and the upper housing are hinged by a reset hinge, so that the staff can easily flip open the upper housing and pass the optical cable body through the middle for installation, which is convenient and quick to operate. By setting a restraint, the restraint can lock and unlock the closed state of the upper housing under the coordinated cooperation of the restraint and the rack, that is, the upper housing can be automatically opened and closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It shows a schematic diagram of the overall structure of a monitoring device provided in an embodiment of the present invention; Figure 2 A schematic diagram of the structure of an optical cable reel and a cleaning assembly provided in an embodiment of the present invention is shown; Figure 3 A schematic diagram of the structure of a cleaning component after hiding the upper shell according to an embodiment of the present invention is shown; Figure 4 A schematic diagram of the structure of a cleaning component hidden behind a housing according to an embodiment of the present invention is shown; Figure 5 It shows a schematic structural diagram of a winding cleaning member provided according to an embodiment of the present invention; Figure 6 An exploded schematic diagram of the winding cleaning piece structure provided according to an embodiment of the present invention is shown; Figure 7 A schematic diagram of the internal structure of the lower shell provided according to an embodiment of the present invention is shown; Figure 8 A schematic diagram of the structure of a restraining member provided in an embodiment of the present invention is shown; Fig. 9 A schematic exploded view of a local structure of a restraining member provided according to an embodiment of the present invention is shown.

[0015] Legend: 1. Oil pipe; 2. Binding piece; 3. Optical cable body; 4. Base; 5. Optical cable reel; 6. Guide wheel; 7. Lower shell; 8. Upper shell; 9. Extrusion plate; 10. Mounting plate; 11. Flushing pipe; 12. Reel; 13. Cleaning belt; 14. Mounting shaft; 15. Mounting roller; 16. Electric push rod; 17. Rack; 18. Rotating half ring; 19. Pressure block; 20. Moving plate; 21. Tooth groove; 22. Spring; 23. Fixed sleeve; 24. Rotating shaft; 25. Bearing; 26. First spiral groove; 27. Bump; 28. Fixed half ring; 29. ​​Connecting half ring; 30. Annular groove; 31. Second spiral groove; 32. Mounting cavity; 33. Connecting bolt; 34. Guide rod. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1-Figure 9 As shown, an oil well optical fiber temperature monitoring device for oil exploration includes an oil pipe 1, an optical cable body 3 and a temperature measuring optical terminal for connecting the optical cable body 3. A connector is provided at the end of the oil pipe 1. The oil pipes 1 are connected to each other and gradually lowered into the oil well. The connection of the connector is sealed. The optical cable body 3 is fixed to the outside of the oil pipe 1 by a binding member 2. The spacing of the binding members 2 is set to effectively ensure the stability of the optical cable body 3 fixed to the outer wall of the oil pipe 1. As the oil pipe 1 is lowered into the oil well, it also includes: An optical cable reel 5 with a base 4: the optical cable reel 5 is rotatably mounted on the upper end of the base 4, a guide wheel 6 for guiding the optical cable body 3 is provided on one side of the base 4, the guide wheel 6 is connected to the base 4 through a support frame, or is fixed to the ground through a support frame, and a card slot for clamping and fixing one end of the optical cable body 3 is provided on the inner side of the optical cable reel 5. When the optical cable body 3 is being reeled or released, one end of the optical cable body 3 is clamped in the card slot. With the rotation of the optical cable reel 5, only the end of the optical cable body 3 connected to the oil pipe 1 is reeled or released, and the other end of the optical cable body 3 will not be reeled or released. When the oil pipe 1 is lowered into the specified depth, the staff removes the other end of the optical cable body 3 from the card slot and connects it to the temperature measuring optical terminal; A cleaning component for cleaning the optical cable body 3: the cleaning component includes a shell, a flushing component and a winding cleaning component arranged inside the shell. A rectangular groove for the optical cable body 3 to pass through is provided on the side of the shell close to the optical cable winding drum 5. During the process of winding or releasing the optical cable body 3, the optical cable body 3 may move back and forth so that the optical cable body 3 is evenly wound on the optical cable winding drum 5. During this process, the optical cable body 3 can move back and forth in the rectangular groove. A through hole for the optical cable body 3 to pass through is provided at the other end of the shell. The optical cable body 3 passes through the through hole and cooperates with the guide wheel 6 to ensure the stability of the transportation of the optical cable body 3. During the process of the optical cable body 3 passing through the shell, the flushing component and the winding cleaning component are simultaneously cleaned to ensure the cleanliness of the outer surface of the optical cable body 3.

[0018] Furthermore, the flushing component includes a flushing pipe 11 fixedly arranged on the top surface of the shell, the flushing pipe 11 is fixedly connected to the inner wall of the shell through the mounting plate 10, the flushing pipe 11 is fixedly connected to the mounting plate 10 through a clamp, and a plurality of nozzles are evenly distributed on the lower surface of the flushing pipe 11. The flushing pipe 11 is L-shaped and one end passes through the outside of the shell and is connected to the external water supply equipment through a pipeline. A drain pipe is provided at the lower end of the shell, and the external water supply equipment pumps clean water to the flushing pipe 11, and then sprays the material from the nozzle, thereby effectively cleaning the stains on the surface of the optical cable body 3, and then the sewage is discharged through the drain pipe.

[0019] Furthermore, the winding cleaning member includes a cleaning belt 13, a mounting shaft 14 and a fixed ring arranged on the inner wall of the shell, the cleaning belt 13 is made of sponge material, the inner wall of the shell is provided with a reel 12 for winding and rewinding the cleaning belt 13, the reel 12 includes a mounting shell and a reel roller rotatably arranged inside the mounting shell, and a spring is provided at the rotating connection of the reel roller, the cleaning belt 13 is wound around the surface of the reel roller, the other end of the cleaning belt 13 is connected to one end of the mounting shaft 14, one end of the mounting shaft 14 is rotatably sleeved with a mounting roller 15 for connecting the cleaning belt 13, and the outer side of the fixed ring is rotatably sleeved with a The rotating ring, the fixed ring and the through hole are located on the same axis, and two mounting grooves are provided on the inner wall of the shell. Racks 17 cooperating with the upper and lower ends of the outer gear ring are slidably provided inside the two mounting grooves. Electric push rods 16 for driving the two racks 17 to move in opposite directions are provided inside the two mounting grooves. Under the driving action of the electric push rods 16, the racks 17 are driven to reciprocate in the mounting grooves. Under the mutual cooperation of the racks 17 and the outer gear ring, the rotating ring is driven to rotate. An installation cavity 32 for sliding the installation shaft 14 into the installation is provided on one side of the rotating ring, and a guide is provided at the other end of the installation shaft 14. Rod 34, guide rod 34 is threadedly connected with installation shaft 14, which is convenient for installation and disassembly. The surface of the fixed ring is provided with a second spiral groove 31 that matches with the guide rod 34, and the inner wall of the installation cavity 32 is provided with a slide groove for the guide rod 34 to slide. Under the cooperation of the guide rod 34 and the slide groove, the stability of the movement of the installation shaft 14 along the installation cavity 32 is guaranteed. When the rotating ring rotates, it will drive the installation shaft 14 to revolve, and the installation shaft 14 revolves and then drives the cleaning belt 13 to move, so that the cleaning belt 13 is gradually wrapped around the outer side of the optical cable body 3. The installation shaft 14 moves toward the inside of the installation cavity 32 with the cooperation of the guide rod 34 and the second spiral groove 31, thereby driving the cleaning belt 13 to move. That is, in this process, the spiral winding effect of the cleaning belt 13 is achieved to avoid interference of the cleaning belt 13 during the winding process, which causes the cleaning belt 13 to be unable to wind one circle. Then, during the winding process, the optical cable body 3 is wiped by the cleaning belt 13 to improve the cleaning effect. The number of rotations of the rotating ring is controlled by the opened second spiral groove 31, so that the number of rotations of the rotating ring is greater than one circle.

[0020] Further, the shell body includes a lower shell 7 and an upper shell 8, and the lower shell 7 and the upper shell 8 are hingedly matched by a reset hinge. The lower shell 7 is fixedly connected to the base 4. The upper shell 8 is opened by flipping over, so that the optical cable body 3 can be installed through the middle of the shell body, which is convenient for the staff to operate. Then the upper shell 8 is flipped over and closed. A connecting ring that matches the fixed ring is provided on one side of the rotating ring. The connecting ring is composed of two connecting half rings 29. A plurality of connecting bolts 33 that match the annular groove 30 are provided through the thread on the surface of the connecting ring. The plurality of connecting bolts 33 are distributed in an annular array. One end of the plurality of connecting bolts 33 is smooth and has a chamfered corner. The end face of the fixed ring is provided with an annular groove 30. The fixed ring is provided with The rotating ring is composed of two fixed semi-rings 28, and the rotating ring is composed of two rotating semi-rings 18. By screwing one end of the connecting bolt 33 into the annular groove 30, the stability of the connection between the rotating semi-ring 18 and the fixed semi-ring 28 is ensured, and the rotating semi-ring 18 will not fall off. The outer surfaces of the two rotating semi-rings 18 are provided with tooth grooves 21 that match the rack 17. The lower shell 7 is provided with a restraining member that matches the upper shell 8. When the upper shell 8 is closed, when the rotating ring rotates, on the one hand, the cleaning belt 13 will be spirally wound. On the other hand, when the rotating ring is deflected, the joints between the two rotating semi-rings 18 and the joints between the lower shell 7 and the upper shell 8 will be misaligned (refer to the attached manual). Figure 3 At this time, the joints of the two rotating half rings 18 and the joints of the lower shell 7 and the upper shell 8 are aligned, but as the rotation proceeds, they tend to be misaligned). At this time, the upper shell 8 cannot be flipped open, thereby achieving the effect of locking the upper shell 8 in the closed state.

[0021] Further, the restraining member includes a moving plate 20 slidably arranged inside the lower shell 7 and a rotating shaft 24 penetrating the side wall of the lower shell 7. The rotating shaft 24 is rotatably connected to the lower shell 7 through a bearing 25. The moving plate 20 is connected to the inner wall of the lower shell 7 through a spring 22. The spring 22 has a stiffness coefficient greater than the stiffness coefficient of the reset hinge. The two racks 17 are one long and one short. A pressure block 19 squeezed by the short rack 17 is provided on one side of the moving plate 20. A fixed sleeve 23 is provided on one side of the moving plate 20. A convex block 2 is provided on the inner wall of the fixed sleeve 23. 7, the surface of the rotating shaft 24 is provided with a first spiral groove 26 that cooperates with the protrusion 27, and one end of the rotating shaft 24 is provided with a pressing plate 9 for pressing the upper shell 8 to close, and the inner end of the pressing plate 9 is in an arc shape, which is used to contact with the outer surface of the upper shell 8 and gradually press the upper shell 8 to flip and close as the pressing plate 9 deflects. When in use, after the two rotating half rings 18 are rotated and reset, that is, the joints of the two rotating half rings 18 are aligned with the joints of the lower shell 7 and the upper shell 8 (refer to the attached manual Figure 4), at this time, the long rack 17 remains meshed with the tooth groove 21, while the short rack 17 has been disengaged from the tooth groove 21, and then one of the electric push rods 16 continues to drive the short rack 17 to move, and the movement of the short rack 17 gradually squeezes the pressure block 19, thereby driving the movable plate 20 to move, and the movement of the movable plate 20 drives the fixed sleeve 23 to move. Under the mutual cooperation of the protrusion 27 and the first spiral groove 26, the rotating shaft 24 will rotate to drive the extrusion plate 9 to deflect, so that the deflection of the extrusion plate 9 gradually releases the extrusion on the upper shell 8, and then the upper shell 8 is automatically flipped open under the action of the reset hinge, and reversed when the electric push rod 16 drives the short rack 17 to move and gradually releases the extrusion on the pressure block 19, under the reset action of the spring 22, the movable plate 20 will move, and then the rotating shaft 24 drives the extrusion plate 9 to deflect in the opposite direction, thereby squeezing and causing the upper shell 8 to flip and close.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oil well optical fiber temperature monitoring device for oil exploration, comprising an oil pipe (1), an optical cable body (3) and a temperature measuring optical terminal for connecting the optical cable body (3), wherein the optical cable body (3) is fixed to the outside of the oil pipe (1) by a binding member (2), and characterized in that: Also includes: An optical cable reel (5) having a base (4): the optical cable reel (5) is rotatably mounted on the upper end of the base (4), a guide wheel (6) for guiding the optical cable body (3) is provided on one side of the base (4), and a clamping groove for clamping and fixing one end of the optical cable body (3) is provided on the inner side of the optical cable reel (5); A cleaning component for cleaning an optical cable body (3): the cleaning component comprises a shell, a flushing component and a winding cleaning component arranged inside the shell, the shell having a rectangular groove for the optical cable body (3) to movably penetrate on one side close to the optical cable reel (5), and a through hole for the optical cable body (3) to movably penetrate on the other end of the shell.

2. The oil well optical fiber temperature monitoring device for oil exploration according to claim 1, characterized in that: The flushing component comprises a flushing pipe (11) fixedly arranged on the top surface of the shell body, one end of the flushing pipe (11) passes through the outside of the shell body and is connected to an external water supply device through a pipeline.

3. The oil well optical fiber temperature monitoring device for oil exploration according to claim 1, characterized in that: The winding cleaning member comprises a cleaning belt (13), a mounting shaft (14) and a fixed ring arranged on the inner wall of a shell body, the inner wall of the shell body is provided with a reel (12) for winding and reeling the cleaning belt (13), the other end of the cleaning belt (13) is connected to one end of the mounting shaft (14), a rotating ring with an outer gear ring is rotatably sleeved on the outer side of the fixed ring, the fixed ring and the through hole are located on the same axis, the inner wall of the shell body is provided with two mounting grooves, racks (17) matching with the upper and lower ends of the outer gear ring are slidably arranged in the two mounting grooves, electric push rods (16) for driving the racks (17) to move in the opposite direction are respectively arranged in the two mounting grooves, a mounting cavity (32) for sliding the mounting shaft (14) into and installing is provided on one side of the rotating ring, a guide rod (34) is provided at the other end of the mounting shaft (14), a second spiral groove (31) matching with the guide rod (34) is provided on the surface of the fixed ring, and a sliding groove for sliding the guide rod (34) is provided on the inner wall of the mounting cavity (32).

4. The oil well optical fiber temperature monitoring device for oil exploration according to claim 3, characterized in that: The shell comprises a lower shell (7) and an upper shell (8), wherein the lower shell (7) and the upper shell (8) are hingedly connected via a reset hinge, a connecting ring cooperating with the fixed ring is provided on one side of the rotating ring, the connecting ring is composed of two connecting half rings (29), a plurality of connecting bolts (33) cooperating with the annular groove (30) are threadedly penetrated through the surface of the connecting ring, an annular groove (30) is provided on the end surface of the fixed ring, the fixed ring is composed of two fixed half rings (28), the rotating ring is composed of two rotating half rings (18), and the outer surfaces of the two rotating half rings (18) are provided with tooth grooves (21) cooperating with the rack (17), and a restraining member cooperating with the upper shell (8) is provided inside the lower shell (7).

5. The oil well optical fiber temperature monitoring device for oil exploration according to claim 4, characterized in that: The restraining member comprises a movable plate (20) slidably arranged inside the lower shell (7) and a rotating shaft (24) penetrating the side wall of the lower shell (7); the movable plate (20) is connected to the inner wall of the lower shell (7) via a spring (22); a pressure block (19) pressed by the rack (17) is provided on one side of the movable plate (20); a fixed sleeve (23) is provided on one side of the movable plate (20); a protrusion (27) is provided on the inner wall of the fixed sleeve (23); a first spiral groove (26) matched with the protrusion (27) is provided on the surface of the rotating shaft (24); and an extrusion plate (9) for pressing the upper shell (8) to close is provided at one end of the rotating shaft (24).

6. The oil well optical fiber temperature monitoring device for oil exploration according to claim 5, characterized in that: The spring (22) has a stiffness coefficient greater than that of the reset hinge.

7. The oil well optical fiber temperature monitoring device for oil exploration according to claim 5, characterized in that: The plurality of connecting bolts (33) are distributed in a ring array, and one end of the plurality of connecting bolts (33) is smooth and has a rounded corner.

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