CN-116007860-B - Polished rod sealer inspection device and method thereof

CN116007860BCN 116007860 BCN116007860 BCN 116007860BCN-116007860-B

Abstract

The invention provides a polish rod sealer inspection device and a method thereof, wherein the device comprises a rotating power system, a polish rod sealing detection system, a deviation adjustment detection system, a pressure test detection system, a pneumatic system and a circulating system, wherein the rotating power system provides tension, stroke and stroke frequency for connection of the polish rod sealing detection system, the polish rod sealing detection system provides a deviation adjustment angle and a deviation adjustment distance for the deviation adjustment detection system, a pressure test polish rod sealer and a platform for the pressure test detection system, the pressure test detection system provides well fluid, temperature, pressure and time for inspection for the polish rod sealing detection system, the pneumatic system provides pneumatic pressure and pressure test gas for the pressure test detection system, and pressure test well fluid in the polish rod sealing detection system is cleaned to enter the circulating system. The polish rod sealer inspection device and the polish rod sealer inspection method improve the reliability, the safety and the service life of the polish rod sealer, are convenient and quick to test and inspect, have low test cost, can lighten the labor intensity of oil extraction workers and keep green production at well sites.

Inventors

ZHAO LEI
NIU JUN
ZHANG YAN
SU GANGFENG
ZHAO XIAODONG
ZHAO QINGLIN
CHU ZHANLIANG
YU FEI
HU HONGHAO
HONG JIGUANG
CHEN JIHONG
CHEN HONGFENG

Assignees

中国石油化工股份有限公司
中国石油化工股份有限公司胜利油田分公司桩西采油厂

Dates

Publication Date: 20260512
Application Date: 20211021

Claims (20)

1. The polish rod sealer inspection device is characterized by comprising a rotation power system, a polish rod sealing detection system, a deviation adjustment detection system, a pressure test detection system, a pneumatic system and a circulation system, wherein the rotation power system is connected with the polish rod sealing detection system and provides tension, stroke and impulse for the connection of the polish rod sealing detection system, the polish rod sealing detection system is connected with the deviation adjustment detection system and the pressure test detection system and provides a deviation adjustment angle and a deviation adjustment distance for the deviation adjustment detection system and provides a pressure test polish rod sealer and a platform for the pressure test detection system, the pressure test detection system is connected with the pneumatic system and the circulation system and provides inspected well fluid, temperature, pressure and time for the polish rod sealing detection system, and the pneumatic system provides pneumatic pressure and pressure test gas for the pressure test detection system and cleans the pressure test well fluid in the polish rod sealing detection system into the circulation system.
2. The polished rod sealer inspection device according to claim 1, wherein the rotary power system comprises a variable frequency cabinet, a rotary speed main case, a motor, a turntable, a rotary speed measuring platform, a rotary handle, a wire rope, a fixed pulley and a hanger, wherein the variable frequency cabinet is connected with the motor for supplying electric energy to the motor and adjusting the rotary speed, the rotary handle and the turntable are arranged on a motor shaft of the motor, the rotary speed measuring platform is arranged between the variable frequency cabinet, the rotary speed main case and the fixed pulley, the rotary speed signal of the turntable is measured, the rotary speed signal is transmitted to the rotary speed main case for displaying the rotary speed, the wire rope is connected with the rotary handle, the fixed pulley and the hanger for adjusting the stroke, and the polished rod of the polished rod sealer inspection system is pulled by the fixed pulley and the hanger for reciprocating motion.
3. The inspection device of polish rod sealer according to claim 2, wherein the rotation force system further comprises a plurality of stroke holes and a rotation pin, the rotation handle is provided with the plurality of stroke holes, the rotation pin is connected with the rotation handle bearing through the stroke holes, the rotation pin is fixed in the stroke holes and is connected with the bearing to rotate freely, the rotation pin pulls the steel wire rope to do circular reciprocating motion along with the rotation of the rotation handle, the steel wire rope pulls the polish rod to do reciprocating motion through the fixed pulley and the hanger, the stroke holes where the rotation pin on the rotation handle is located are adjusted, the reciprocating motion distances of the polish rod are different, and the distance is the stroke.
4. The polished rod sealer inspection device according to claim 2, wherein the rotation speed measuring platform comprises a speed measuring sensor, a connecting rod, a bracket and a floor, the floor is used for fixing the motor, the bracket is fixed on the floor, one end of the connecting rod is fixed on the speed measuring sensor, the other end is fixed on the bracket, the speed measuring sensor measures a rotation speed signal of the turntable and transmits the rotation speed signal to the rotation speed mainframe box.
5. The polished rod sealer inspection device of claim 2, wherein the hanger is mounted between the offset distance frame of the polished rod sealer inspection system and the fixed sheave to serve the function of connecting the polished rod and the wire rope.
6. The inspection device of claim 5, wherein the hanger comprises a hanger body, a plumb, a hanger joint, a polish rod joint and a press plate screw hole, wherein the hanger body is connected with the steel wire rope through the plumb, the hanger joint is connected with the polish rod through the polish rod joint in a threaded manner, and the press plate is fixed on the hanger body through screws to the press plate screw hole in an inner manner to fix the steel wire rope, so as to play a role of connecting the polish rod and the steel wire rope.
7. The polished rod sealer inspection device according to claim 1, wherein the polished rod sealer inspection system comprises a polished rod and a deviation adjusting distance frame, an a-type polished rod sealer, a four-way, a C-type polished rod sealer, a deviation adjusting angle frame, a fixed baffle, a spring and a polished rod coupling which are sequentially positioned on the polished rod, wherein the deviation adjusting distance frame and the deviation adjusting angle frame provide deviation adjusting displacement and supporting force for the polished rod, the polished rod reciprocates in the a-type polished rod sealer, the four-way and the C-type polished rod sealer, packing in the polished rod sealer is inspected for wear-resistant sealing, the spring penetrates the polished rod to provide pulling force for the polished rod, the fixed baffle plays a role of blocking the spring, and the polished rod fixes the spring.
8. The polished rod sealer inspection device of claim 7, wherein the retainer comprises a screw, an upper plate, a polished rod hole, a lower plate, a steel plate, a plate rib, and a base, the upper plate is fixedly connected to the lower plate by the screw, the lower plate is welded to the steel plate and the plate rib, the steel plate and the plate rib are welded to the base, the base is fixed to a floor, the polished rod is inserted into the polished rod hole, and the retainer stabilizes the polished rod and blocks the spring.
9. The inspection device of claim 7, wherein the offset distance adjusting frame comprises a fixed ring, a packing, a polish rod hole, an upper hinge seat, a screw rod, an upper support rod, a double hinge seat, a lower support rod, a lower hinge seat and a base, wherein the fixed ring is welded with the upper hinge seat, the packing and the polish rod hole are arranged in the fixed ring, the upper hinge seat is connected with the upper support rod shaft, the double hinge seat is connected with the upper support rod, the upper and lower shafts of the lower support rod, the lower support rod is connected with the lower hinge seat shaft, the lower hinge seat is welded and fixed with the base, the hand wheel is fixed at one end of the screw rod, the hand wheel is rotated clockwise, the fixed ring is lifted, the hand wheel is rotated anticlockwise, the fixed ring is lowered, the polish rod penetrates through the polish rod hole and is lifted up and down, and the offset angle and the offset distance adjusting function is achieved for the C-type polish rod sealer and the a-type polish rod sealer.
10. The polish rod sealer inspection device according to claim 7, wherein the a-type polish rod sealer comprises a gland, a packing, a secondary packing, a packing pipe body, a sealing ring, a sealer spring, a bias-adjusting joint, a bias-adjusting cap, a sealing ring and a clamp head, wherein the gland is in threaded connection with the packing pipe body, the gland and the packing are installed in the gland, the gland is tightened to press the packing by the gland to seal the polish rod, the bias-adjusting joint is in threaded connection with the packing pipe body, the secondary packing, the sealing ring and the sealer spring are installed in the gland, the packing pipe body is tightened to compress the secondary packing, the sealing ring and the sealer spring to seal the polish rod, the bias-adjusting joint is connected with the sealing ring and the clamp head through the bias-adjusting cap to seal and bias-adjusting, and the polish rod passes through the packing and the secondary packing to conduct hydraulic static and dynamic sealing performance test.
11. The polished rod sealer inspection device of claim 7, wherein the polished rod sealer inspection system further comprises a B-type polished rod sealer and a tee, the B-type polished rod sealer is mounted on the tee, a clamp connection is provided, an inspection mandrel with minimum specifications of the polished rod is mounted in the polished rod sealer and a packing is pressed, and a hydrostatic sealing performance test is performed.
12. The polished rod sealer inspection device of claim 11, wherein the B-type polished rod sealer comprises a flange, a press cap, a packing housing, a packing, a grommet, a seal cap, a screw, a packing seat, a packing, and a clamp seat, wherein the press cap is screwed with the packing housing, the flange, the packing, and the grommet are installed therein, an inspection mandrel with minimum specifications for a polished rod is installed and inserted into the tee joint through the press cap, the flange, and the packing, the press cap is tightened to press the flange and the packing, the packing is compressed to perform a function of a seal mandrel, i.e., a primary seal, the seal cap is screwed with the packing housing, the screw, the packing seat, and the packing are installed therein, the screw is tightened to compress the packing, perform a function of a seal mandrel, i.e., a secondary seal, and the clamp seat is integrally structured with the packing housing, and the clamp seat is connected with the tee joint through the clamp seat at the lower part of the packing.
13. The polished rod sealer inspection device of claim 11, wherein the four-way joint comprises a right clamp head, a clamp, a four-way clamp head, a left clamp head, a fixed bottom plate, a bracket and a base, wherein the clamp is in bolt connection with the fixed bottom plate, the four-way joint is clamped and fixed, the fixed bottom plate is welded with the bracket, the bracket is welded and fixed with the base, the right clamp head of the four-way joint is in clamp connection with the clamp head of the a-type polished rod sealer, the front part of the four-way clamp head is in clamp connection with a high-pressure hydraulic control valve and a pressure test tube of the pressure test detection system, and then is in clamp connection with a circulation valve of the circulation system, and the left clamp head is in clamp connection with a clamp seat of the C-type polished rod sealer.
14. The polished rod sealer inspection device of claim 13, wherein two of the four-way is mounted between the a-type polished rod sealer and the C-type polished rod sealer, and the other two is mounted between the three-way and the high pressure pilot operated valve, and is a clamp connection.
15. The polished rod sealer inspection device according to claim 7, wherein the C-shaped polished rod sealer comprises a scraping oil packing, a flange, a packing cylinder, a packing, a blocking ring, a rubber block seat, a jackscrew cover, a jackscrew, a rubber block, a ball head, a sealing ring, a ball head cover, a pressing cap, a distance adjusting disc and a clamp seat, wherein the pressing cap is in threaded connection with the packing cylinder, the scraping oil packing and the flange are arranged in the packing cylinder, the scraping oil packing is pressed on the flange, the flange is pressed on the packing, the packing is in the packing cylinder, is pressed on the blocking ring, the pressing cap is tightened, and plays a role of sealing the polished rod when the packing is axially compressed, namely, primary sealing, the jackscrew cover is in threaded connection with the packing cylinder, the rubber block seat and the rubber block are arranged in the jackscrew, the ball head is tightened, the rubber block is radially compressed, and plays a role of sealing the polished rod, namely, secondary sealing, the ball head and the packing are integrated, the ball head is in threaded connection with the ball head cover and the ball head, the distance adjusting cap is pressed on the sealing disc, and the clamp seat is pressed on the sealing disc by the distance adjusting cap, and the sealing ring is pressed on the distance adjusting disc, and the clamp is pressed by the sealing disc.
16. The inspection device of claim 7, wherein the deviation-adjusting angle frame comprises a fixed ring, a packing, a polish rod hole, an upper hinge seat, a screw rod, an upper support rod, a double hinge seat, a hand wheel, a lower support rod, a lower hinge seat and a base, wherein the fixed ring is welded with the upper hinge seat, the packing and the polish rod hole are arranged in the fixed ring, the upper hinge seat is connected with the upper support rod shaft, the double hinge seat is connected with the upper support rod, the lower support rod is connected with the upper and lower shafts of the lower support rod, the lower support rod is connected with the lower hinge seat shaft, the lower hinge seat is welded and fixed with the base, the hand wheel is fixed at one end of the screw rod, the hand wheel is rotated clockwise, the fixed ring is lifted, the hand wheel is rotated anticlockwise, the fixed ring is lowered, the polish rod penetrates through the polish rod hole, and is lifted up and down along with the rotation of the upper hinge seat, so as to play a role in adjusting the deviation angle and the deviation-adjusting distance of the C-shaped polish rod sealer and the a-rod sealer.
17. The polished rod sealer inspection device of claim 7, wherein the deflection detection system comprises a displacement sensor, an angle sensor and a deflection display screen, wherein the displacement sensor is mounted on the a-type polished rod sealer to detect deflection distance and the angle sensor is mounted on the C-type polished rod sealer to detect deflection angle, and the deflection display screen is respectively connected with the displacement sensor and the angle sensor to display deflection distance and deflection angle.
18. The polished rod sealer inspection device of claim 1, wherein the pressure test system comprises a well fluid tank, a fluid supply valve, a heater, a fluid inlet valve, a hydraulic station, a hydraulic test platform, an electric heating control box, a pressure test monitor and operation platform, a fluid outlet pipe, a fluid outlet valve, a pressure test pipe and a high-pressure hydraulic control valve, wherein the well fluid tank is connected with the heater through the fluid supply valve, the electric heating control box supplies electric energy to the heater and regulates and controls the temperature of heating well fluid, the heater is connected with the fluid inlet valve, the fluid inlet valve is connected with the hydraulic test platform, the heated well fluid enters the hydraulic test platform through the fluid inlet valve, the pressure test monitor and operation platform supplies electric energy and regulated and controlled pressure to the hydraulic test platform through a cable, after regulating and controlling the pressure through the pressure test platform, the well fluid enters the polished rod sealing test system through the fluid outlet pipe, the fluid outlet valve, the pressure pipe and the high-pressure hydraulic control valve, the high-pressure hydraulic control valve is connected with the polished rod sealing test system, the pressure monitor and operation platform does not supply electric energy to the pressure test platform, and the pressure test valve is connected with the pressure test platform through the pressure test valve, and the pressure test station.
19. The polished rod sealer inspection device of claim 18, wherein the circulation system comprises a circulation valve and a circulation pipeline, the tee joint of the polished rod sealer inspection system is connected with the circulation valve, the circulation valve is connected with the well fluid tank through the circulation pipeline, after the polished rod sealer inspection system is operated, the high-pressure hydraulic control valve is opened, the pneumatic system is started to press and clean the four-way joint of the polished rod sealer inspection system, well fluid in the tee joint enters the well fluid tank through the circulation valve and the circulation pipeline to be recycled.
20. The polish rod sealer inspection device according to claim 1, wherein the air pressure system comprises an air control valve, an air pressurizing pipe, an air compressor, an air supply valve and an air compressor control box, wherein the air compressor control box provides electric energy for the air compressor through a cable, the air control valve is connected with a hydrostatic test platform of the pressure test system to regulate air pressure for the hydrostatic test platform, the air compressor is connected with the air pressurizing pipe, and the air pressure is provided for the polish rod sealing detection system through the air control valve switch.

Description

Polished rod sealer inspection device and method thereof Technical Field The invention relates to the technical field of polish rod sealer inspection of oil extraction wells, in particular to a polish rod sealer inspection device and a polish rod sealer inspection method. Background The polish rod sealer is an important accessory for sealing a wellhead on a pumping unit christmas tree, has multiple types and specifications, can run in the open air, has wide points and multiple faces, is very important in safety and reliability, and can cause wellhead and well site pollution and even mechanical accidents of the pumping unit and the wellhead once the polish rod sealer is stuck and leaked. Along with the increase of the number of oil recovery wells and the workload of operation, the demand of the polish rod sealer is increased, and the requirements on the safety and the reliability of the polish rod sealer are continuously improved. Before and after purchasing the product, the oil extraction units at home and abroad need to test and examine the performance of the oil extraction units, and the oil extraction units can be purchased and used after meeting the product purchasing standards of enterprises. At present, domestic oil extraction enterprises pay more and more attention to product quality, but the inspection device and the inspection method thereof are not perfect, the test and inspection method is single, the inspection index items are not complete, and the technical requirements of the enterprise product purchasing standards are not met. The method for testing the polished rod sealer of the oil well comprises the steps of installing the polished rod sealer manufactured by the device on a site oil well for testing, taking technical parameters required by a full standard to judge whether the polished rod sealer is qualified or not, and testing the tightness of the polished rod sealer by a hydrostatic pressure test. The packing is replaced only after failure of the polish rod sealer is found in field applications. The oil reservoir physical property, crude oil physical property, well type, water mineralization degree, polished rod eccentric wear corrosion degree, pumping speed (stroke, stroke frequency), wellhead back pressure, ground equipment and other conditions of each oil field are different, the type specification requirements of the polished rod sealer are different, and the use effect and the service life are different under the same type specification. In the inspection of oil recovery wells in the field, one type of well can only inspect the effect of use under one condition, the inspection effect is not universal, the test period is long, and the cost is high. Therefore, the manufactured product has great contingency in the practical utility of the oil field, and has great safety and environmental protection risks in the oil extraction site of the oil field. Therefore, it is an important need to design a device and method for testing and verifying the integrity of an item. The oil well wellhead packing sealing performance test system comprises an analog shaft, packing boxes, an oil pumping polished rod, a driving mechanism, a transmission mechanism, an oil supply system for conveying experimental oil to the analog shaft and a cooling medium supply system for conveying cooling mediums into the oil pumping polished rod, wherein the packing boxes are arranged at two ends of the analog shaft, the oil pumping polished rod axially passes through the analog shaft, the transmission mechanism is used for converting rotary motion of the driving mechanism into linear reciprocating motion of the oil pumping polished rod, and a cooling channel is arranged in the oil pumping polished rod. The invention can simulate the sealing working condition of the rubber tower-shaped packing when the oil pumping polish rod of the oil well wellhead reciprocates, so that a rubber tower-shaped packing manufacturer can test and verify the service condition of the packing under various working conditions in a production factory, the test is more convenient and quick, the test cost can be reduced, and meanwhile, the rubber tower-shaped packing supplied to an oil field production unit is efficient and durable. The utility model discloses a CN208420283U, which relates to the technical field of oilfield machinery, and discloses an electric experimental device for a polish rod sealer, comprising a transmission screw rod, a transmission polish rod, a support ring table and a mounting ring table, wherein the support ring table is arranged on the outer side of the middle part of the transmission screw rod, a transmission component capable of enabling the transmission screw rod to reciprocate up and down is arranged on the support ring table, the lower end of the transmission screw rod and the upper end of the transmission polish rod are fixedly arranged together through a fixing device, the mounting ring table is sleeved on the outer