A packer optical fiber crossing sealing test device and method under high temperature and high pressure environment

Abstract

The application discloses a packer optical fiber crossing sealing test device and method under high temperature and high pressure environment. The device comprises a tank body, an upper end of which is provided with a tank opening; a clamping mechanism, which is arranged in the tank body and is in sealing cooperation with the inner periphery of the tank body; a sealing cover plate, which is in threaded connection with the tank opening; a temperature control mechanism, which is arranged in the tank body; a pressurizing mechanism, which is arranged on one side of the tank body; a data acquisition mechanism, which comprises an output optical fiber and a data acquisition optical fiber; and a control mechanism, which is arranged on the other side of the tank body relative to the pressurizing mechanism and is electrically connected with the temperature control mechanism, the pressurizing mechanism and the data acquisition mechanism. The packer optical fiber crossing sealing test device and method can simulate the high temperature and high pressure environment in a well and seal test a packer with an optical fiber crossing device.

Description

Technical Field

[0001] This invention relates to the field of offshore platform trestle technology, and in particular to a device and method for testing the fiber optic penetration sealing of packers under high temperature and high pressure conditions. Background Technology

[0002] A packer is a downhole tool that is attached to the downhole tubing string and used to seal the annular space between the tubing and the casing or open hole of an oil or gas well.

[0003] Currently, there are many devices for testing the sealing of packers, but there are relatively few devices for testing the sealing after the packer fiber optic cable passes through it. This makes it impossible to test the packer fiber optic cable passage, which leads to deviations in the information monitored when using fiber optic cables after the packer fiber optic cable passes through it. This affects the monitoring results and makes it impossible to monitor in a timely manner, resulting in reduced safety when used in oil wells. Summary of the Invention

[0004] The purpose of this invention is to provide a packer fiber optic crossing sealing test device under high temperature and high pressure environment, which can simulate the high temperature and high pressure environment downhole and perform sealing tests on packers with fiber optic crossing devices.

[0005] To achieve the above objectives, the present invention adopts the following technical solution, including: The tank body has a can opening at the top; A clamping mechanism is disposed inside the tank, and its outer periphery is sealed to the inner periphery of the tank; used to clamp the packer. A sealing cover, which is threadedly connected to the can opening, is used to seal the can opening; A temperature control mechanism, which is installed inside the tank, is used to control the temperature of the tank during testing; A pressurization mechanism, located on one side of the tank, is used to control the pressure of the tank during testing; The data acquisition mechanism includes an output optical fiber and a data acquisition optical fiber; the upper end of the data acquisition optical fiber is connected to the lower end of the optical fiber transducer disposed in the packer channel for collecting pressure and temperature inside the tank; the lower end of the output optical fiber is connected to the upper end of the optical fiber transducer, and the upper part of the output optical fiber passes through the upper side wall of the tank and extends out of the tank for outputting the data collected by the data acquisition optical fiber. A control mechanism is located on the other side of the tank body opposite to the pressurizing mechanism and is electrically connected to the temperature control mechanism, the pressurizing mechanism and the data acquisition mechanism, for controlling the temperature control mechanism, the pressurizing mechanism and the data acquisition mechanism; The clamping mechanism includes: The clamping frame is circular in shape, and the outer periphery of the clamping frame is sealed to the inner periphery of the tank; a first annular space is provided inside the clamping frame; A first annular rack is horizontally rotatably disposed in the middle of the first annular space, dividing the first annular space into an upper annular space and a lower annular space; a first upper gear tooth is provided on the inner edge of the upper end face of the first annular rack; a first lower gear tooth is provided on the outer edge of the lower end face of the first annular rack. A worm gear is vertically and rotatably disposed within the first upper annular cavity; a worm shaft is provided at the center of the worm gear; the upper end of the worm shaft passes through the upper end face of the clamping frame and extends out of the clamping frame; an inner corner hole is provided at the upper end of the worm shaft; A turbine is disposed on one side of the worm and meshes with the worm; a horizontal turbine shaft is provided at the center of the turbine; A clamping drive gear is disposed at the inner end of the turbine shaft and meshes with the first upper gear teeth; Multiple clamping driven gears are evenly distributed around the circumference in the lower annular space and mesh with the teeth of the first lower gear; a clamping screw is provided at the center of the clamping driven gears; A clamping threaded cylinder is sleeved on the outer periphery of the clamping screw; the inner periphery of the clamping threaded cylinder is provided with an internal thread that matches the thread on the outer periphery of the clamping screw; the inner end of the clamping threaded cylinder extends out of the inner periphery of the clamping frame. An arc-shaped clamping plate is fixedly disposed at the inner end of the clamping threaded cylinder.

[0006] Preferably, it also includes: A clamping and lifting electric push rod mounting plate is provided on the inner wall of the lower part of the tank body; A clamping and lifting electric push rod is vertically mounted on the clamping and lifting electric push rod mounting plate; the upper end of the clamping and lifting electric push rod is connected to the lower end of the clamping frame, and is used to drive the clamping frame to lift and lower.

[0007] Preferably, it also includes: A base plate is disposed below the tank body to support the tank body; Multiple support legs are evenly distributed on the lower end face of the base plate, and the support legs are connected to the ground by anchor bolts; Four columns are vertically installed at the four corners of the upper surface of the base plate; The upper frame is located directly above the base plate, and the four corners of the lower end face of the upper frame are respectively connected to the upper ends of the four columns.

[0008] Preferably, it also includes: A pair of sliding grooves are horizontally and laterally oppositely arranged on the upper frame; A pair of movable lead screws are arranged axially in the slide groove, and pulleys are provided at the ends of the movable lead screws. The pulleys are connected by belt drive. A pair of nuts, each sleeved on the movable lead screw; The movable box has its two ends fixedly connected to the nuts respectively; A translation motor, the output shaft of which is connected to the starting end of any moving lead screw; A tension pulley is disposed on the side of the upper frame and is tactilely connected to the belt; A rotary motor is located on one side of the upper end face of the movable box, and the output shaft of the rotary motor extends into the movable box; A drive gear is disposed inside the movable box, and the drive gear shaft at the center of the drive gear is connected to the output shaft of the up-and-down rotating motor. The driven gear is located inside the movable box, on one side of the driving gear, and meshes with the driving gear. The driven gear shaft at the center of the driven gear passes through the lower end face of the movable box. The upper end of the electric push rod of the closed cover is connected to the lower end of the driven gear shaft through a coupling. The lower end of the electric push rod is connected to the upper end face of the closed cover.

[0009] Preferably, it also includes: A brake gear disc, which is mounted on the driven gear shaft; An annular brake frame is coaxially disposed outside the driven gear shaft, and a second annular space is provided inside the annular brake frame; A brake motor is mounted on the outer peripheral wall of the annular brake frame; the output shaft of the brake motor extends into the upper part of the second annular space. A brake drive gear is connected to the output shaft of the brake motor via a brake drive gear shaft. The second annular rack is horizontally rotatably disposed in the middle of the second annular space. A second upper gear tooth is provided on the upper end face of the outer edge of the second annular rack, and a second lower gear tooth is provided on the end face of the outer edge of the second annular rack. The second upper gear tooth meshes with the brake drive gear. Multiple brake driven gears are evenly distributed around the circumference within the second annular space, located below the second lower gear teeth, and meshing with the second lower gear teeth; a brake lead screw is provided at the center of the brake driven gears and is arranged horizontally. A brake threaded cylinder is sleeved on the brake screw, and an internal thread that matches the external thread of the brake screw is provided on the inner circumference of the brake threaded cylinder; the inner end of the brake threaded cylinder extends out of the inner circumferential wall of the annular brake frame. A brake tooth, located at the inner end of the brake threaded cylinder, is inserted into the brake gear disc to brake the driven gear shaft.

[0010] Preferably, the pressurizing mechanism includes: A high-pressure gas tank mounting bracket is mounted on the base plate and located on one side of the tank body; A high-pressure gas cylinder is mounted on the high-pressure gas cylinder mounting bracket. The high-pressure gas cylinder has a high-pressure gas cylinder outlet at the top and a high-pressure gas cylinder inlet at the bottom. A supply valve, the starting end of which is connected to the outlet of the high-pressure gas tank; A supply pump, the starting end of which is connected to the end of the supply valve; The first pipeline is connected at its starting end to the end of the supply pump; An electromagnetic three-way valve, the first port of which is connected to the end of the first pipeline; The second pipeline is connected at its starting end to the second interface of the electromagnetic three-way valve. An intake control valve, the starting end of which is connected to the end of the second pipeline; the end of the intake control valve is connected to the tank body; A collection valve, the starting end of which is connected to the air inlet of the high-pressure gas tank; A collection pump, the starting end of which is connected to the end of the collection valve; The third pipeline is connected at its starting end to the third port of the electromagnetic three-way valve; the third pipeline is connected to the end of the collecting pump. A pressure sensor is mounted on the inner wall of the middle part of the tank via a pressure sensor base and is electrically connected to the control mechanism.

[0011] Preferably, the temperature control mechanism includes: Multiple temperature control plates are evenly distributed and embedded on the inner wall of the tank to increase the temperature inside the tank; A temperature sensor is mounted on the inner wall of the lower part of the tank via a temperature sensor base and is electrically connected to the control mechanism.

[0012] Preferably, the data acquisition mechanism further includes: A liquid level sensor, which is mounted on the inner circumference of the bottom of the tank via a liquid level sensor mounting bracket and is electrically connected to the control mechanism, is used to detect the leakage of the packer.

[0013] Preferably, the control mechanism is: The control console is mounted on the base plate and located on the opposite side of the pressurizing mechanism; the control console is electrically connected to the clamping lifting electric push rod, the translation motor, the up and down rotating motor, the sealing cover electric push rod, the brake motor, the supply valve, the supply pump, the electromagnetic three-way valve, the air intake control valve, the collection valve, the collection pump, the pressure sensor, the temperature sensor, the temperature control plate, the output optical fiber, and the liquid level sensor. A power outlet, located at the rear of the console, is used to provide power to the console; A monitor, which is set on the console, is used to display data.

[0014] A method for testing the sealing of a packer fiber optic cable under high temperature and high pressure, using the high temperature and high pressure fiber optic cable penetration sealing test device described in any one of the above-mentioned methods, characterized by comprising the following steps: S1. Connect the output optical fiber and the data acquisition optical fiber to the upper and lower ends of the optical fiber optic tunneling device, respectively. S2. The packer is clamped and fixed inside the tank by a clamping mechanism; S3. Seal the tank opening with a sealing cover; S4. Simulate a high-pressure environment through a pressurization mechanism; S5. Simulates a high-temperature environment through a temperature control mechanism; S6. Perform a sealing test on the packer using a data acquisition mechanism.

[0015] The beneficial effect of this invention is that it can simulate the high temperature and high pressure environment downhole to conduct sealing tests on packers with fiber optic cross-connectors. Attached Figure Description

[0016] Figure 1 This invention provides a three-dimensional test device for fiber optic cable penetration sealing of packers under high temperature and high pressure conditions. Figure 1 .

[0017] Figure 2 This invention provides a three-dimensional test device for fiber optic cable penetration sealing of packers under high temperature and high pressure conditions. Figure 2 .

[0018] Figure 3 This is the front view of a packer fiber optic crossing seal testing device under high temperature and high pressure conditions according to the present invention. Figure 3 .

[0019] Figure 4 This is the front view of a packer fiber optic crossing seal testing device under high temperature and high pressure conditions according to the present invention. Figure 4 .

[0020] Figure 5 This is the front view of a packer fiber optic crossing seal testing device under high temperature and high pressure conditions according to the present invention. Figure 5 .

[0021] Figure 6 This is the front view of a packer fiber optic crossing seal testing device under high temperature and high pressure conditions according to the present invention. Figure 6 .

[0022] Figure 7 This is a three-dimensional cross-section of a packer fiber optic crossing sealing test device under high temperature and high pressure conditions according to the present invention. Figure 1 .

[0023] Figure 8 This is a three-dimensional cross-section of a packer fiber optic crossing sealing test device under high temperature and high pressure conditions according to the present invention. Figure 2 .

[0024] Figure 9 This is an enlarged view of point A in the present invention.

[0025] Figure 10 This is an enlarged view of section B of the present invention.

[0026] Figure 11 This is an enlarged view of point C in the present invention.

[0027] Figure 12 This is an enlarged view of point D in the present invention. Detailed Implementation

[0028] The invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0029] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0030] like Figure 1-12 As shown, the present invention provides a packer fiber optic crossing sealing test device under high temperature and high pressure conditions, comprising: The tank body 110 has a can opening at the upper end; as a preferred embodiment, a base 112 for supporting the tank body 110 is provided below the tank body 110. A clamping mechanism 120 is disposed inside the tank body 110, with its outer periphery sealingly engaged with the inner periphery of the tank body 110; used to clamp the packer 2; wherein, the clamping mechanism 120 includes: a clamping frame 121 in the shape of an annular ring, the outer periphery of the clamping frame 121 sealingly engaged with the inner periphery of the tank body 110; a first annular space is provided inside the clamping frame 121; a first annular rack 122 is horizontally rotatably disposed in the middle of the first annular space, dividing the first annular space into an upper annular space and a lower annular space; as a preferred embodiment, limiting annular grooves adapted to the first annular rack are respectively provided on the side wall of the first annular space, for realizing that the first annular rack 122 is horizontally rotatably disposed in the middle of the first annular space. A first upper gear tooth is provided on the inner edge of the upper end face of the first annular rack 122; a first lower gear tooth is provided on the outer edge of the lower end face of the first annular rack 122; a worm 123 is vertically and rotatably disposed in the first upper annular cavity; a worm shaft 123a is provided at the center of the worm 123; the upper end of the worm shaft 123a passes through the upper end face of the clamping frame 121 and extends out of the clamping frame 121; an inner corner hole is provided at the upper end of the worm shaft 123a; a turbine 124 is disposed on one side of the worm 123 and meshes with the worm 123; a horizontal turbine shaft 124a is provided at the center of the turbine 124; clamping A drive gear 125 is disposed at the inner end of the turbine shaft 124a and meshes with the first upper gear teeth; a plurality of clamping driven gears 126 are evenly distributed around the circumference in the lower annulus and mesh with the first lower gear teeth; a clamping screw 126a is disposed at the center of the clamping driven gear 126; a clamping threaded cylinder 127 is sleeved on the outer circumference of the clamping screw 126a; an internal thread adapted to the outer thread of the clamping screw 126a is provided on the inner circumference of the clamping threaded cylinder 127; the inner end of the clamping threaded cylinder 127 extends out of the inner circumferential wall of the clamping frame 121; an arc-shaped clamping plate 128 is fixedly disposed on the inner end of the clamping threaded cylinder 127; The sealing cover 111 is threadedly connected to the can opening and is used to seal the can opening; A temperature control mechanism is installed inside the tank 110 to control the temperature of the tank 110 during testing; A pressurizing mechanism is located on one side of the tank 110 and is used to control the pressure of the tank 110 during testing; The data acquisition mechanism includes an output optical fiber 151 and a data acquisition optical fiber 152. The upper end of the data acquisition optical fiber 152 is connected to the lower end of the optical fiber transducer 220 disposed in the channel 210 of the packer 2, and is used to collect the pressure and temperature inside the tank 110. The lower end of the output optical fiber 151 is connected to the upper end of the optical fiber transducer 220. The upper part of the output optical fiber 151 passes through the upper side wall of the tank 110 and extends out of the tank 110, and is used to output the data collected by the data acquisition optical fiber. Preferably, an optical fiber hole for the output optical fiber 151 to pass through is provided on the upper side wall of the tank, and a sealing mechanism is provided at the optical fiber hole. A control mechanism is located on the other side of the tank 110 opposite to the pressurization mechanism and is electrically connected to the temperature control mechanism, the pressurization mechanism and the data acquisition mechanism, for controlling the temperature control mechanism, the pressurization mechanism and the data acquisition mechanism.

[0031] In another embodiment, it further includes: a clamping and lifting electric push rod mounting plate 129, which is disposed on the inner wall of the lower part of the tank body 110; a clamping and lifting electric push rod 129a, which is vertically disposed on the clamping and lifting electric push rod mounting plate 129; the upper end of the clamping and lifting electric push rod 129a is connected to the lower end of the clamping frame 121, and is used to drive the clamping frame 121 to lift and lower.

[0032] In another embodiment, the system further includes: a base plate 171 disposed below the tank body 110 for supporting the tank body 110; a plurality of support legs 172 evenly distributed on the lower end face of the base plate 110, the support legs 172 being connected to the ground by anchor bolts; four columns 173 vertically disposed at the four corners of the upper end face of the base plate 171; and an upper frame 174 disposed directly above the base plate 171, the four corners of the lower end face of the upper frame 174 being connected to the upper ends of the four columns 173.

[0033] In another embodiment, the system further includes: a pair of horizontally opposite sliding grooves 181 arranged on the upper frame 174; a pair of axially arranged sliding screws 182 within the sliding grooves 181, with pulleys 182a at the ends of the sliding screws 182, and the pulleys 182a being connected by a belt 182b; a pair of nuts respectively fitted onto the sliding screws 182; two ends of a movable box 183 respectively fixedly connected to the nuts; the output shaft of a translation motor 184 connected to the starting end of any sliding screw 182; a tensioning wheel 182c disposed on the side of the upper frame 174 and tactilely connected to the belt; and a rotary motor 185 disposed on the upper end of the movable box 183. On one side of the surface, the output shaft of the up-and-down rotating motor 185 extends into the movable box 183; the driving gear 186 is disposed in the movable box 183, and the driving gear shaft at the center of the driving gear 186 is connected to the output shaft of the up-and-down rotating motor 185; the driven gear 187 is disposed in the movable box 186, located on one side of the driving gear 186, and meshes with the driving gear 186, and the driven gear shaft at the center of the driven gear 187 passes through the lower end face of the movable box 183; the upper end of the electric push rod 188 of the closed cover is connected to the lower end of the driven gear shaft through a coupling 189; the lower end of the electric push rod 188 is connected to the upper end face of the closed cover 111.

[0034] In another embodiment, the system further includes: a brake gear disc 191 disposed on the driven gear shaft; an annular brake frame 192 coaxially disposed outside the driven gear shaft, with a second annular space provided within the annular brake frame 192; a brake motor 193 disposed on the outer peripheral wall of the annular brake frame 12; the output shaft of the brake motor 193 extending into the upper part of the second annular space; a brake drive gear 194 connected to the output shaft of the brake motor 193 via a brake drive gear shaft 194a; and a second annular rack 195 horizontally rotatably disposed in the middle of the second annular space. Preferably, limiting annular grooves adapted to the two annular racks 195 are respectively provided on the side walls of the second annular space to enable the two annular racks 195 to be horizontally rotatably disposed in the middle of the second annular space. A second upper gear tooth is provided on the upper end face of the outer edge of the second annular rack 195, and a second lower gear tooth is provided on the end face of the outer edge of the second annular rack 195; the second upper gear tooth meshes with the brake drive gear 194; a plurality of brake driven gears 196 are evenly distributed around the circumference in the second annular space, located below the second lower gear tooth, and mesh with the second lower gear tooth; a horizontally arranged brake screw 196a is provided at the center of the brake driven gear 196; a brake threaded cylinder 197 is sleeved on the brake screw 196a, and an internal thread adapted to the external thread of the brake screw 196a is provided on the inner circumference of the brake threaded cylinder 197; the inner end of the brake threaded cylinder 197 extends out of the inner circumferential wall of the annular brake frame 192; a brake tooth 198 is provided at the inner end of the brake threaded cylinder 197 for insertion into the brake gear disc 191 to brake the driven gear shaft.

[0035] In another embodiment, the pressurization mechanism includes: a high-pressure gas tank mounting bracket 141a disposed on the base plate 171 and located on one side of the tank body 110; a high-pressure gas tank 141 disposed on the high-pressure gas tank mounting bracket 141a, with a high-pressure gas tank outlet at the upper part of the high-pressure gas tank 141 and a high-pressure gas tank inlet at the lower part of the high-pressure gas tank 141; a supply valve 142 whose starting end is connected to the high-pressure gas tank outlet; a supply pump 142a whose starting end is connected to the end of the supply valve 142; a first pipeline 143 whose starting end is connected to the end of the supply pump 142a; and a solenoid three-way valve 144 whose first port is connected to the end of the first pipeline 143; a second... The starting end of pipeline 145 is connected to the second interface of the electromagnetic three-way valve 144; the starting end of the air intake control valve 146 is connected to the end of the second pipeline 145; the end of the air intake control valve 146 is connected to the tank body; the starting end of the collecting valve 147 is connected to the air inlet of the high-pressure gas tank; the starting end of the collecting pump 147a is connected to the end of the collecting valve 147; the starting end of the third pipeline 148 is connected to the third interface of the electromagnetic three-way valve 144; the third pipeline 148 is connected to the end of the collecting pump 147a; the pressure sensor 149 is mounted on the inner wall of the middle part of the tank body 110 through the pressure sensor base 149a and is electrically connected to the control mechanism.

[0036] In another embodiment, the temperature control mechanism includes: a plurality of temperature control plates 131 evenly distributed and embedded on the inner wall of the tank 110 for increasing the temperature inside the tank 110; and a temperature sensor 132 disposed on the inner wall of the lower part of the tank 110 via a temperature sensor base 132a and electrically connected to the control mechanism.

[0037] In another embodiment, the data acquisition mechanism further includes: a liquid level sensor 153 disposed on the inner periphery of the bottom of the tank 110 via a liquid level sensor mounting bracket 153a and electrically connected to the control mechanism, for detecting the leakage of the packer 2.

[0038] In another embodiment, the control mechanism includes: a console 161 mounted on the base plate 171 and located on the opposite side from the pressurizing mechanism; the console 161 is electrically connected to the clamping lifting electric push rod 129a, the translation motor 184, the up-down rotation motor 185, the closing cover electric push rod 188, the brake motor 193, the supply valve 142, the supply pump 142a, the electromagnetic three-way valve 144, the air intake control valve 146, the collection valve 147, the collection pump 147a, the pressure sensor 149, the temperature sensor 132, the temperature control plate 131, the output optical fiber 151, and the liquid level sensor; a power socket 162 is located behind the console 161 for providing power to the console 161; and a display 161a is mounted on the console 161 for displaying data.

[0039] A method for testing the sealing of a packer fiber optic cable under high temperature and high pressure, using the packer fiber optic cable penetration sealing test device 1 described above, characterized by comprising the following steps: S1. Connect the output optical fiber 151 and the data acquisition optical fiber 152 to the upper and lower ends of the optical fiber optic tunneling device 220, respectively. S2. The clamping frame 121 is raised above the tank opening by the clamping lifting electric push rod 129a; then the inner angle hole is rotated by the inner angle wrench, which in turn drives the worm gear 123, turbine 124, clamping drive gear 125, first ring rack 122, multiple clamping driven gears 126, and clamping screw 126a to rotate in sequence. The threaded cylinder 127, which is sleeved on the clamping screw 126a, moves inward under the transmission of the clamping screw 126a, which in turn drives multiple arc-shaped clamping plates 128 to converge radially, thereby clamping and fixing the packer 2 in the tank body 110 by the clamping mechanism 120; the packer 2 is filled with liquid; then the clamping frame 121 is lowered into the tank body 110 by the clamping lifting electric push rod 129a. S3. Seal the can opening with a sealing cover; turn on the translation motor 184 to move the sealing cover 111 directly above the can opening; turn on the up-and-down rotation motor 185 and the electric push rod 188. The up-and-down rotation motor 185 sequentially drives the driving gear 186, driven gear 187, and driven gear shaft to rotate; the driven gear shaft drives the electric push rod 188 to rotate, and the electric push rod 188 drives the sealing cover 111 to descend spirally, tightening the sealing cover 111 at the can opening; the control console 161 according to... After the working time of the up-and-down rotating motor 185 and the electric push rod 188 is determined and tightened, the brake motor 193 is turned on. The brake motor 193 sequentially drives the brake drive gear 194, the second annular rack 195, multiple brake driven gears 196 and the brake screw 196a to rotate. The brake screw 196a drives the brake threaded cylinder 197 and the brake teeth 198 to radially retract. The brake teeth 198 are inserted into the brake gear disc 191 to brake the driven gear shaft.

[0040] S4. Open the supply valve 142, supply pump 142a, solenoid three-way valve 144 and air intake control valve 146 to inject high-pressure gas into the tank 110, thereby simulating a high-pressure environment through the pressurization mechanism; the pressure sensor 149 detects the pressure inside the tank and transmits it to the control mechanism. S5. Multiple temperature control plates 131 are activated to increase the temperature inside the tank 110, thereby simulating a high-temperature environment through the temperature control mechanism; the temperature sensor 132 detects the temperature inside the tank and transmits it to the control mechanism. S6. Data acquisition fiber optic cable 152 collects the temperature and pressure inside the tank below the packer, liquid level sensor 153 detects the leakage, and output fiber optic cable 151 and liquid level sensor 153 transmit the values ​​to control console 161. The console 161 compares the temperature and pressure values ​​measured by the data acquisition fiber optic cable 152 with the temperature and pressure values ​​measured by the temperature sensor 132 and the pressure sensor 149 to check for any differences; and checks whether the liquid level sensor 153 detects any leakage.

[0041] In summary, the present invention provides a packer fiber optic crossing sealing test device 1 and method under high temperature and high pressure environment, which can simulate the downhole high temperature and high pressure environment and perform sealing tests on packers 2 with fiber optic crossing devices 220.

[0042] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A packer fiber optic crossing sealing test device under high temperature and high pressure environment, characterized in that, include: The tank body has a can opening at the top; A clamping mechanism is disposed inside the tank, and its outer periphery is sealed to the inner periphery of the tank. Used to hold packers; A sealing cover, which is threadedly connected to the can opening, is used to seal the can opening; A temperature control mechanism, which is installed inside the tank, is used to control the temperature of the tank during testing; A pressurization mechanism, located on one side of the tank, is used to control the pressure of the tank during testing; The data acquisition mechanism includes an output optical fiber and a data acquisition optical fiber; the upper end of the data acquisition optical fiber is connected to the lower end of the optical fiber transducer disposed in the packer channel for collecting pressure and temperature inside the tank; the lower end of the output optical fiber is connected to the upper end of the optical fiber transducer, and the upper part of the output optical fiber passes through the upper side wall of the tank and extends out of the tank for outputting the data collected by the data acquisition optical fiber. A control mechanism is located on the other side of the tank body opposite to the pressurizing mechanism and is electrically connected to the temperature control mechanism, the pressurizing mechanism and the data acquisition mechanism, for controlling the temperature control mechanism, the pressurizing mechanism and the data acquisition mechanism; The clamping mechanism includes: The clamping frame is circular in shape, and the outer periphery of the clamping frame is sealed to the inner periphery of the tank; a first annular space is provided inside the clamping frame; A first annular rack is horizontally rotatably disposed in the middle of the first annular space, dividing the first annular space into an upper annular space and a lower annular space; a first upper gear tooth is provided on the inner edge of the upper end face of the first annular rack; a first lower gear tooth is provided on the outer edge of the lower end face of the first annular rack. A worm gear is vertically and rotatably disposed within the first upper annular cavity; a worm shaft is provided at the center of the worm gear; the upper end of the worm shaft passes through the upper end face of the clamping frame and extends out of the clamping frame; an inner corner hole is provided at the upper end of the worm shaft; A turbine is disposed on one side of the worm and meshes with the worm; a horizontal turbine shaft is provided at the center of the turbine; A clamping drive gear is disposed at the inner end of the turbine shaft and meshes with the first upper gear teeth; Multiple clamping driven gears are evenly distributed around the circumference in the lower annular space and mesh with the teeth of the first lower gear; a clamping screw is provided at the center of the clamping driven gears; A clamping threaded cylinder is sleeved on the outer periphery of the clamping screw; the inner periphery of the clamping threaded cylinder is provided with an internal thread that matches the thread on the outer periphery of the clamping screw; the inner end of the clamping threaded cylinder extends out of the inner periphery of the clamping frame. An arc-shaped clamping plate is fixedly disposed at the inner end of the clamping threaded cylinder.

2. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 1, characterized in that... It also includes: A clamping and lifting electric push rod mounting plate is provided on the inner wall of the lower part of the tank body; A clamping and lifting electric push rod is vertically mounted on the clamping and lifting electric push rod mounting plate; the upper end of the clamping and lifting electric push rod is connected to the lower end of the clamping frame, and is used to drive the clamping frame to lift and lower.

3. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 2, characterized in that, Also includes: A base plate is disposed below the tank body to support the tank body; Multiple support legs are evenly distributed on the lower end face of the base plate, and the support legs are connected to the ground by anchor bolts; Four columns are vertically installed at the four corners of the upper surface of the base plate; The upper frame is located directly above the base plate, and the four corners of the lower end face of the upper frame are respectively connected to the upper ends of the four columns.

4. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 3, characterized in that, Also includes: A pair of sliding grooves are horizontally and laterally oppositely arranged on the upper frame; A pair of movable lead screws are arranged axially in the slide groove, and pulleys are provided at the ends of the movable lead screws. The pulleys are connected by belt drive. A pair of nuts, each sleeved on the movable lead screw; The movable box has its two ends fixedly connected to the nuts respectively; A translation motor, the output shaft of which is connected to the starting end of any moving lead screw; A tension pulley is disposed on the side of the upper frame and is tactilely connected to the belt; A rotary motor is located on one side of the upper end face of the movable box, and the output shaft of the rotary motor extends into the movable box; A drive gear is disposed inside the movable box, and the drive gear shaft at the center of the drive gear is connected to the output shaft of the up-and-down rotating motor. The driven gear is located inside the movable box, on one side of the driving gear, and meshes with the driving gear. The driven gear shaft at the center of the driven gear passes through the lower end face of the movable box. The upper end of the electric push rod of the closed cover is connected to the lower end of the driven gear shaft through a coupling. The lower end of the electric push rod is connected to the upper end face of the closed cover.

5. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 4, characterized in that, Also includes: A brake gear disc, which is mounted on the driven gear shaft; An annular brake frame is coaxially disposed outside the driven gear shaft, and a second annular space is provided inside the annular brake frame; A brake motor is mounted on the outer peripheral wall of the annular brake frame; the output shaft of the brake motor extends into the upper part of the second annular space. A brake drive gear is connected to the output shaft of the brake motor via a brake drive gear shaft. The second annular rack is horizontally rotatably disposed in the middle of the second annular space. A second upper gear tooth is provided on the upper end face of the outer edge of the second annular rack, and a second lower gear tooth is provided on the end face of the outer edge of the second annular rack. The second upper gear tooth meshes with the brake drive gear. Multiple brake driven gears are evenly distributed around the circumference within the second annular space, located below the second lower gear teeth, and meshing with the second lower gear teeth; a brake lead screw is provided at the center of the brake driven gears and is arranged horizontally. A brake threaded cylinder is sleeved on the brake screw, and an internal thread that matches the external thread of the brake screw is provided on the inner circumference of the brake threaded cylinder; the inner end of the brake threaded cylinder extends out of the inner circumferential wall of the annular brake frame. A brake tooth, located at the inner end of the brake threaded cylinder, is inserted into the brake gear disc to brake the driven gear shaft.

6. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 5, characterized in that, The pressurization mechanism includes: A high-pressure gas tank mounting bracket is mounted on the base plate and located on one side of the tank body; A high-pressure gas cylinder is mounted on the high-pressure gas cylinder mounting bracket. The high-pressure gas cylinder has a high-pressure gas cylinder outlet at the top and a high-pressure gas cylinder inlet at the bottom. A supply valve, the starting end of which is connected to the outlet of the high-pressure gas tank; A supply pump, the starting end of which is connected to the end of the supply valve; The first pipeline is connected at its starting end to the end of the supply pump; An electromagnetic three-way valve, the first port of which is connected to the end of the first pipeline; The second pipeline is connected at its starting end to the second interface of the electromagnetic three-way valve. An intake control valve, the starting end of which is connected to the end of the second pipeline; the end of the intake control valve is connected to the tank body; A collection valve, the starting end of which is connected to the air inlet of the high-pressure gas tank; A collection pump, the starting end of which is connected to the end of the collection valve; The third pipeline is connected at its starting end to the third port of the electromagnetic three-way valve; the third pipeline is connected to the end of the collecting pump. A pressure sensor is mounted on the inner wall of the middle part of the tank via a pressure sensor base and is electrically connected to the control mechanism.

7. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 6, characterized in that, The temperature control mechanism includes: Multiple temperature control plates are evenly distributed and embedded on the inner wall of the tank to increase the temperature inside the tank; A temperature sensor is mounted on the inner wall of the lower part of the tank via a temperature sensor base and is electrically connected to the control mechanism.

8. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 7, characterized in that, The data acquisition mechanism also includes: A liquid level sensor, which is mounted on the inner circumference of the bottom of the tank via a liquid level sensor mounting bracket and is electrically connected to the control mechanism, is used to detect the leakage of the packer.

9. The packer fiber optic crossing sealing test device under high temperature and high pressure environment according to claim 3, characterized in that, The control mechanism: The control console is mounted on the base plate and located on the opposite side of the pressurizing mechanism; the control console is electrically connected to the clamping lifting electric push rod, the translation motor, the up and down rotating motor, the sealing cover electric push rod, the brake motor, the supply valve, the supply pump, the electromagnetic three-way valve, the air intake control valve, the collection valve, the collection pump, the pressure sensor, the temperature sensor, the temperature control plate, the output optical fiber, and the liquid level sensor. A power outlet, located at the rear of the console, is used to provide power to the console; A monitor, which is set on the console, is used to display data.

10. A method for testing the sealing of a packer fiber optic cable under high temperature and high pressure, using the packer fiber optic cable testing device under high temperature and high pressure as described in any one of claims 1-9, characterized in that... Includes the following steps: S1. Connect the output optical fiber and the data acquisition optical fiber to the upper and lower ends of the optical fiber optic tunneling device, respectively. S2. The packer is clamped and fixed inside the tank by a clamping mechanism; S3. Seal the tank opening with a sealing cover; S4. Simulate a high-pressure environment through a pressurization mechanism; S5. Simulates a high-temperature environment through a temperature control mechanism; S6. Perform a sealing test on the packer using a data acquisition mechanism.

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