CN116517495B - High-water-content wellhead sealing device - Google Patents
High-water-content wellhead sealing device Download PDFInfo
- Publication number
- CN116517495B CN116517495B CN202310785688.8A CN202310785688A CN116517495B CN 116517495 B CN116517495 B CN 116517495B CN 202310785688 A CN202310785688 A CN 202310785688A CN 116517495 B CN116517495 B CN 116517495B
- Authority
- CN
- China
- Prior art keywords
- sealing
- rod
- fixedly arranged
- clamping block
- electromagnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 139
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 37
- 238000001514 detection method Methods 0.000 claims description 21
- 230000001050 lubricating effect Effects 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 3
- 238000005461 lubrication Methods 0.000 abstract description 22
- 239000010779 crude oil Substances 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 5
- 229920000459 Nitrile rubber Polymers 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 abstract description 4
- 229920006231 aramid fiber Polymers 0.000 abstract description 3
- 239000000428 dust Substances 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- -1 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 abstract description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N11/00—Arrangements for supplying grease from a stationary reservoir or the equivalent in or on the machine or member to be lubricated; Grease cups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
- F16N7/366—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication with feed by pumping action of a vertical shaft of the machine
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a high-water-content wellhead sealing device, which relates to the technical field of oil and gas exploitation and comprises a flange base, wherein a sealing shell is fixedly arranged on the flange base through screws, a dust cover is fixedly arranged on the sealing shell, a sealing assembly is fixedly arranged in the sealing shell, the sealing assembly comprises a bottom centering cylinder, and a lubrication chamber is fixedly arranged on the bottom centering cylinder; according to the invention, a small amount of crude oil is brought into the spiral lubrication groove in the running process of the polished rod, the spiral lubrication groove is filled with a small amount of crude oil, and the crude oil flows to the sealing ring through the communication groove, so that the polished rod is continuously lubricated, the abrasion of the sealing ring is greatly reduced, the service life is greatly prolonged, the abrasion resistance of the sealing ring is improved, the surface friction coefficient is reduced by adding polytetrafluoroethylene into nitrile rubber, the abrasion resistance is improved by adding aramid fiber, and after the sealing ring fails, the C-shaped sealing ring is tightly attached to the surface of the polished rod, so that the temporary sealing effect is realized, and leakage is prevented.
Description
Technical Field
The invention relates to the field of oil and gas exploitation, in particular to a wellhead sealing device with high water content.
Background
The well control seal of the oil field pumping unit always adopts a single or a plurality of nitrile rubber rectangular rings to be placed in a wellhead sealing box, the pumping unit polish rod passes through the middle of a sealing ring, a compression nut is arranged at the top end of the sealing box, and the sealing ring is tightly attached to the polish rod after the sealing ring is compressed, so that the sealing effect is achieved.
In the prior art, the invention patent with the publication number of CN107355191B discloses a wellhead sealing device, and the polished rod of the technical scheme reciprocates up and down under the drive of a pumping unit, so that crude oil stuck on the polished rod also plays a certain role in lubrication, and sealing cannot be failed quickly. However, in high water-containing wells, the crude oil content is very low, the crude oil adhered to the polished rod is very small, the lubricating effect is very small, the rubber ring continuously generates heat under the action of huge friction force, the aging of the rubber ring is accelerated, and the damage is very serious.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides the following technical scheme: the utility model provides a high water content well head sealing device, includes the flange base, has sealed shell through screw fixed mounting on the flange base, fixed mounting has the shield on the sealed shell, fixed mounting has seal assembly in the sealed shell, seal assembly includes bottom centering section of thick bamboo, fixed mounting has the lubrication chamber on the bottom centering section of thick bamboo, is provided with spiral lubrication groove in the lubrication chamber, still be provided with the intercommunication groove that is used for lining up at least two rings spiral lubrication groove along the axial of lubrication chamber on the lubrication chamber, the intercommunication groove be six at least, and evenly distributed on the lubrication chamber, still fixed mounting has the sealing chamber on the lubrication chamber, evenly be provided with at least five sealing washer along the axial on the sealing chamber, fixed mounting has the detection ring on the sealing chamber, is provided with the detection subassembly in the detection ring, fixed mounting has a top centering section of thick bamboo on the detection ring, fixed mounting has the insurance module on the top centering section of thick bamboo; the safety module comprises an auxiliary sealing shell, a first sealing clamping block and a second sealing clamping block are symmetrically arranged in the auxiliary sealing shell, air vents for balancing pressure are formed in the first sealing clamping block and the second sealing clamping block, C-shaped sealing rings are arranged on the first sealing clamping block and the second sealing clamping block, side sealing strips are fixedly installed on the first sealing clamping block, grooves matched with the side sealing strips are formed in the second sealing clamping block, contact surfaces of the first sealing clamping block and the second sealing clamping block are used for sealing, the first sealing clamping block and the second sealing clamping block are in sliding fit with the auxiliary sealing shell through extrusion sliding rods, two extrusion tension springs are arranged on the extrusion sliding rods in a surrounding mode, a sliding ring frame is arranged on the top centering cylinder in a sliding mode, one end of each sliding ring frame, far away from the polish rod, of each sliding rod is movably connected with a pull rod, a second swinging rod is movably installed on each first swinging rod, one end, far away from each first swinging rod, of each second swinging rod is movably installed on the first swinging rod, each electromagnet is movably installed on the second swinging rod is vertically and fixedly installed on the electromagnet support seat, and is vertically and fixedly installed on the electromagnet.
Preferably, three sets of bottom centering rollers for centering the polished rod are rotatably arranged in the bottom centering cylinder, and three sets of top centering rollers for centering the polished rod are rotatably arranged in the top centering cylinder.
Preferably, the auxiliary sealing shell is fixedly arranged on the top centering cylinder, a limiting block used for limiting is arranged at the joint of the first swinging rod and the second swinging rod, and the limiting block is fixedly arranged on the top centering cylinder.
Preferably, the first swinging rod and the second swinging rod are in contact fit with the limiting block, the sliding rod support is fixedly connected with the detection ring, and the sliding rod support is in sliding connection with the sliding rod.
Preferably, the support seat is fixedly arranged on the sealing chamber, friction force is arranged between the electromagnet and the electromagnet support, and the maximum static friction force is larger than the gravity of the electromagnet.
Preferably, the detection assembly comprises a first spiral copper wire and a second spiral copper wire, a gap is reserved between the first spiral copper wire and the second spiral copper wire, and the first spiral copper wire and the second spiral copper wire are fixedly installed in the detection ring through a spiral copper wire bracket.
Preferably, the first spiral copper wire is electrically connected with one end of the electromagnet, the other end of the electromagnet is electrically connected with one end of the normally closed button, the other end of the normally closed button is electrically connected with one end of the power supply, and the other end of the power supply is electrically connected with the second spiral copper wire.
Compared with the prior art, the invention has the following beneficial effects: (1) According to the invention, a small amount of crude oil is brought into the spiral lubrication groove in the running process of the polished rod, and flows to the sealing ring through the communication groove to continuously lubricate the polished rod, so that the abrasion of the sealing ring is greatly reduced, and the service life is greatly prolonged; (2) In order to improve the wear resistance of the sealing ring, polytetrafluoroethylene is added into nitrile rubber to reduce the surface friction coefficient, and aramid fiber is added to improve the wear resistance; (3) According to the invention, the safety module is arranged, and after the sealing ring fails, the C-shaped sealing ring can be tightly attached to the surface of the polished rod, so that the temporary sealing effect is realized, and leakage is prevented.
Drawings
FIG. 1 is a schematic view of the seal housing of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is a cross-sectional view of the structure of the lubrication chamber of the present invention.
Fig. 4 is a schematic diagram of the structure a in fig. 3 according to the present invention.
FIG. 5 is a schematic diagram of a detecting assembly according to the present invention.
FIG. 6 is a schematic diagram of a communicating vessel according to the present invention.
Fig. 7 is a schematic view of the structure of the safety module of the present invention.
Fig. 8 is a cross-sectional view of the auxiliary sealing case structure of the present invention.
In the figure: 101-a bottom centering cylinder; 102-bottom centering rollers; 103-a lubrication chamber; 1031-spiral lubrication grooves; 1032-communicating grooves; 104-sealing the chamber; 105-sealing rings; 106-detecting ring; 107-top centering cylinder; 108-top centering rollers; 201-auxiliary sealing shell; 202-a first sealing clamp block; 203-vent; 204-a second sealing clamp block; 205-side sealing strips; 206-C type sealing ring; 207-squeezing the slide bar; 208-squeezing the tension spring; 209-a tie rod; 210-a sliding ring frame; 211-a first swing lever; 212-a second swing lever; 213-limited blocks; 214-pushing and pulling the swing rod; 215-vertical links; 216-sliding bar; 217-magnetic attraction blocks; 218-a slide bar bracket; 219-an electromagnet; 220-electromagnet support; 221-a normally closed button; 222-a supporting seat; 301-a first spiral copper wire; 302-a second spiral copper wire; 303-a spiral copper wire bracket; 4-sealing the housing; 5-polish rod; 6-a dust cap; 7-a flange base.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
As shown in fig. 1-8, the invention provides a high-water-content wellhead sealing device, which comprises a flange base 7, wherein a sealing shell 4 is fixedly arranged on the flange base 7 through bolts, a dust cover 6 is fixedly arranged on the sealing shell 4, a sealing component is fixedly arranged in the sealing shell 4, the sealing component comprises a bottom centering cylinder 101, a lubricating chamber 103 is fixedly arranged on the bottom centering cylinder 101, a spiral lubricating groove 1031 is arranged in the lubricating chamber 103, at least six communicating grooves 1032 for at least two circles of spiral lubricating grooves 1031 to penetrate along the axial direction of the lubricating chamber 103 are also arranged on the lubricating chamber 103, at least five sealing rings 105 are uniformly arranged on the sealing chamber 104 along the axial direction, a detection ring 106 is fixedly arranged on the sealing chamber 104, a detection component is fixedly arranged in the detection ring 106, a top centering cylinder 107 is fixedly arranged on the detection ring 106, and a safety module is fixedly arranged on the top centering cylinder 107; three sets of bottom centering rollers 102 for centering the polished rod 5 are rotatably provided in the bottom centering cylinder 101, and three sets of top centering rollers 108 for centering the polished rod 5 are rotatably provided in the top centering cylinder 107.
The safety module comprises an auxiliary sealing shell 201, a first sealing clamping block 202 and a second sealing clamping block 204 are symmetrically arranged in the auxiliary sealing shell 201, air vents 203 for balancing pressure are respectively arranged on the first sealing clamping block 202 and the second sealing clamping block 204, a C-shaped sealing ring 206 is respectively arranged on the first sealing clamping block 202 and the second sealing clamping block 204, a side sealing strip 205 is fixedly arranged on the first sealing clamping block 202, a groove matched with the side sealing strip 205 is respectively arranged on the second sealing clamping block 204 for sealing the contact surface of the first sealing clamping block 202 and the second sealing clamping block 204, the first sealing clamping block 202 and the second sealing clamping block 204 are respectively in sliding fit with the auxiliary sealing shell 201 through extrusion slide bars 207, extrusion tension springs 208 are respectively arranged on the two extrusion slide bars 207 in a surrounding mode, a sliding ring frame 210 is respectively arranged on the top centering cylinder 107 in a sliding mode, the sliding ring frame 210 is movably connected with one end, far away from the polish rod 5, of the two extrusion slide bars 207 through a pull rod 209, the first swinging rod 211 is movably arranged on the sliding ring frame 210, the second swinging rod 212 is movably arranged on the first swinging rod 211, one end of the second swinging rod 212, which is far away from the first swinging rod 211, is movably arranged on the top centering cylinder 107, a push-pull swinging rod 214 is also movably connected at the joint of the first swinging rod 211 and the second swinging rod 212, a vertical connecting rod 215 is movably arranged at one end of the push-pull swinging rod 214, which is far away from the first swinging rod 211, a sliding rod 216 is fixedly arranged in the middle of the vertical connecting rod 215, the sliding rod 216 is slidably arranged on the detection ring 106 through a sliding rod bracket 218, a magnetic attraction block 217 is fixedly arranged at one end of the sliding rod 216, which is far away from the vertical connecting rod 215, a magnetic attraction matched electromagnet 219 is arranged below the magnetic attraction block 217, the electromagnet 219 is slidably arranged on an electromagnet bracket 220, the electromagnet bracket 220 is fixedly arranged on a supporting seat 222, the support base 222 is also fixedly provided with a normally closed button 221. The auxiliary sealing shell 201 is fixedly arranged on the top centering cylinder 107, a limiting block 213 for limiting is arranged at the joint of the first swinging rod 211 and the second swinging rod 212, and the limiting block 213 is fixedly arranged on the top centering cylinder 107. The first swing rod 211 and the second swing rod 212 are in contact fit with the limiting block 213, the sliding rod support 218 is fixedly connected with the detection ring 106, and the sliding rod support 218 is in sliding connection with the sliding rod 216. The support seat 222 is fixedly installed on the sealing chamber 104, friction force is arranged between the electromagnet 219 and the electromagnet support 220, and the maximum static friction force is larger than the gravity of the electromagnet 219.
The detection assembly comprises a first spiral copper wire 301 and a second spiral copper wire 302, a gap is reserved between the first spiral copper wire 301 and the second spiral copper wire 302, and the first spiral copper wire 301 and the second spiral copper wire 302 are fixedly installed in the detection ring 106 through a spiral copper wire bracket 303. The first spiral copper wire 301 is electrically connected with one end of the electromagnet 219, the other end of the electromagnet 219 is electrically connected with one end of the normally closed button 221, the other end of the normally closed button 221 is electrically connected with one end of the power supply, and the other end of the power supply is electrically connected with the second spiral copper wire 302.
The invention discloses a high-water-content wellhead sealing device, which has the following working principle: firstly, a spiral lubrication groove 1031 and a communication groove 1032 are arranged in a lubrication chamber 103 contacted with a polished rod 5, grease is fully coated in the spiral lubrication groove 1031 during installation, friction between a sealing ring 105 and the polished rod 5 is reduced during initial operation after installation, a small amount of crude oil can be brought into the spiral lubrication groove 1031 (a small amount of crude oil exists in a water well) during operation of the polished rod 5, along with upward movement of the polished rod 5, the crude oil can move upwards along the spiral direction of the spiral lubrication groove 1031, then the spiral lubrication groove 1031 is filled, and the crude oil flows to the sealing ring 105 through the communication groove 1032 to continuously lubricate the polished rod 5, so that abrasion of the sealing ring 105 is greatly reduced, and the service life is greatly prolonged; meanwhile, in order to improve the wear resistance of the sealing ring 105, polytetrafluoroethylene is added into nitrile rubber to reduce the surface friction coefficient, and aramid fiber is added to improve the wear resistance.
When the sealing ring 105 fails, part of water permeates the sealing ring 105, water can be reserved at the position of the detection ring 106, when the quantity of water is increased to be capable of filling the whole detection ring 106, the water can conduct the first spiral copper wire 301 and the second spiral copper wire 302, the electromagnet 219 is electrified, the electromagnet 219 generates magnetic force to attract the magnet block 217 downwards (the top end of the electromagnet support 220 is provided with an oil limiting block for preventing the electromagnet 219 from moving upwards, the electromagnet 219 is already at the topmost end of the electromagnet support 220 in a default state), the magnet block 217 moves downwards to drive the sliding rod 216 to move downwards, the sliding rod 216 moves to drive the push-pull swing rod 214 to swing downwards through the vertical connecting rod 215, and meanwhile, the connecting position of the first swing rod 211 and the second swing rod 212 is pulled to move to the right side (as shown in figure 7), move away from the side of the stopper 213), the slip ring frame 210 will move upwards on the top centering cylinder 107 for a short distance at this time, then when the included angle between the right side (as shown in fig. 7) of the first swing rod 211 and the second swing rod 212 is greater than 180 °, the included angle between the first swing rod 211 and the second swing rod 212 will be smaller (no electromagnet 219 is needed to provide power at this time) under the action of the compression tension spring 208, and then the first sealing clamping block 202 and the second sealing clamping block 204 will approach each other, so as to drive the C-shaped sealing ring 206 to abut against the surface of the polish rod 5, play a role of temporary sealing, prevent leakage, set an alarm at the same time, and alert maintenance personnel to replace the C-shaped sealing ring 206 and the sealing ring 105. When the electromagnet 219 attracts the magnet 217 to move downward and the magnet 217 contacts the electromagnet 219, the magnet 217 continues to move downward under the action of the compression tension spring 208, thereby pushing the electromagnet 219 to slide up and down (overcoming friction force) on the electromagnet support 220, and when the electromagnet 219 is compressed to the normally closed button 221, the electromagnet 219 is de-energized, thereby saving consumption of electric energy.
Claims (7)
1. The utility model provides a high water-containing well head sealing device, includes flange base (7), has sealed shell (4) through screw fixed mounting on flange base (7), and fixed mounting has shield (6), its characterized in that on sealed shell (4): the sealing device is characterized in that a sealing assembly is fixedly arranged in the sealing shell (4), the sealing assembly comprises a bottom centering cylinder (101), a lubricating chamber (103) is fixedly arranged on the bottom centering cylinder (101), a spiral lubricating groove (1031) is formed in the lubricating chamber (103), at least two circles of communicating grooves (1032) for enabling the spiral lubricating grooves (1031) to penetrate through the lubricating chamber (103) along the axial direction of the lubricating chamber (103) are formed in the lubricating chamber (103), at least six communicating grooves (1032) are uniformly distributed on the lubricating chamber (103), a sealing chamber (104) is fixedly arranged on the lubricating chamber (103), at least five sealing rings (105) are uniformly arranged on the sealing chamber (104) at intervals along the axial direction, a detecting ring (106) is fixedly arranged on the sealing chamber (104), a detecting assembly is arranged in the detecting ring (106), a top centering cylinder (107) is fixedly arranged on the detecting ring (106), and a safety module is fixedly arranged on the top centering cylinder (107);
the safety module comprises an auxiliary sealing shell (201), a first sealing clamping block (202) and a second sealing clamping block (204) are symmetrically arranged in the auxiliary sealing shell (201), air vents (203) for balancing pressure are formed in the first sealing clamping block (202) and the second sealing clamping block (204), C-shaped sealing rings (206) are arranged on the first sealing clamping block (202) and the second sealing clamping block (204), side sealing strips (205) are fixedly arranged on the first sealing clamping block (202), grooves matched with the side sealing strips (205) are formed in the second sealing clamping block (204), contact surfaces of the first sealing clamping block (202) and the second sealing clamping block (204) are used for sealing, the first sealing clamping block (202) and the second sealing clamping block (204) are in sliding fit with the auxiliary sealing shell (201) through pressing sliding rods (207), pressing sliding rods (208) are arranged on the two pressing sliding rods (207) in a surrounding mode, a side sealing strip (205) is fixedly arranged on the first sealing clamping block (202), a sliding ring frame (210) is arranged on the top tension spring (107), a sliding ring frame (210) is connected with a sliding rod (211) through a sliding rod (211), a sliding rod (211) is arranged on the sliding rod (211), one end movable mounting that first swinging rod (211) was kept away from to second swinging rod (212) is on top centering section of thick bamboo (107), the junction of first swinging rod (211) and second swinging rod (212) still swing joint has push-pull pendulum rod (214), the one end movable mounting that first swinging rod (211) was kept away from to push-pull pendulum rod (214) has perpendicular connecting rod (215), the middle part fixed mounting of perpendicular connecting rod (215) has slide bar (216), slide bar (216) pass through slide bar support (218) slidable mounting on detection ring (106), the one end fixed mounting that slide bar (216) kept away from perpendicular connecting rod (215) has magnetism to inhale piece (217), the below of magnetism to inhale piece (217) is provided with magnetism and inhale complex electromagnet (219), electromagnet (219) slidable mounting is on electromagnet support (220), electromagnet support (220) fixed mounting is on supporting seat (222), still fixed mounting has normally closed button (221) on the supporting seat (222).
2. A high water content wellhead seal as claimed in claim 1 wherein: the bottom centering cylinder (101) is rotatably provided with three groups of bottom centering rollers (102) for centering the polished rod (5), and the top centering cylinder (107) is rotatably provided with three groups of top centering rollers (108) for centering the polished rod (5).
3. A high water content wellhead seal as claimed in claim 2 wherein: the auxiliary sealing shell (201) is fixedly arranged on the top centering cylinder (107), a limiting block (213) used for limiting is arranged at the joint of the first swinging rod (211) and the second swinging rod (212), and the limiting block (213) is fixedly arranged on the top centering cylinder (107).
4. A high water content wellhead seal as claimed in claim 3 wherein: the first swinging rod (211) and the second swinging rod (212) are in contact fit with the limiting block (213), the sliding rod support (218) is fixedly connected with the detection ring (106), and the sliding rod support (218) is in sliding connection with the sliding rod (216).
5. A high water content wellhead seal as claimed in claim 4 wherein: the supporting seat (222) is fixedly arranged on the sealing chamber (104), friction force is arranged between the electromagnet (219) and the electromagnet bracket (220), and the maximum static friction force is larger than the gravity of the electromagnet (219).
6. A high water content wellhead seal as claimed in claim 5 wherein: the detection assembly comprises a first spiral copper wire (301) and a second spiral copper wire (302), a gap is reserved between the first spiral copper wire (301) and the second spiral copper wire (302), and the first spiral copper wire (301) and the second spiral copper wire (302) are fixedly arranged in the detection ring (106) through a spiral copper wire bracket (303).
7. A high water content wellhead seal as claimed in claim 6 wherein: the first spiral copper wire (301) is electrically connected with one end of the electromagnet (219), the other end of the electromagnet (219) is electrically connected with one end of the normally closed button (221), the other end of the normally closed button (221) is electrically connected with one end of the power supply, and the other end of the power supply is electrically connected with the second spiral copper wire (302).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310785688.8A CN116517495B (en) | 2023-06-30 | 2023-06-30 | High-water-content wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310785688.8A CN116517495B (en) | 2023-06-30 | 2023-06-30 | High-water-content wellhead sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116517495A CN116517495A (en) | 2023-08-01 |
| CN116517495B true CN116517495B (en) | 2023-08-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310785688.8A Active CN116517495B (en) | 2023-06-30 | 2023-06-30 | High-water-content wellhead sealing device |
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| Country | Link |
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| CN (1) | CN116517495B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117967248B (en) * | 2024-04-02 | 2024-06-18 | 山东高原油气装备有限公司 | Anti-pulling underwater wellhead corrosion-proof cap for marine oil-gas drill |
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| CN113898306A (en) * | 2021-09-30 | 2022-01-07 | 四川大学 | In-situ self-triggering while-drilling film-forming quality-guaranteeing coring device and method |
| CN114592820A (en) * | 2021-10-14 | 2022-06-07 | 盐城市崇达石化机械有限公司 | Energy-saving blowout prevention and pressure relief device for offshore fracturing wellhead |
| CN115324516A (en) * | 2022-10-13 | 2022-11-11 | 东营华辰石油装备有限公司 | Air bag compensation type polish rod sealer for oil pumping unit |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1620606A1 (en) * | 1988-11-11 | 1991-01-15 | Rdznenisnnuyi Ravel L | Blowout preventer |
| SU1668629A1 (en) * | 1989-03-13 | 1991-08-07 | Украинская военизированная часть по предупреждению возникновения и по ликвидации открытых газовых и нефтяных фонтанов | Wellhead sealing device |
| CN106958430A (en) * | 2016-01-08 | 2017-07-18 | 于立成 | Rod beam-pumping unit well head sealing apparatus |
| CN113898306A (en) * | 2021-09-30 | 2022-01-07 | 四川大学 | In-situ self-triggering while-drilling film-forming quality-guaranteeing coring device and method |
| CN114592820A (en) * | 2021-10-14 | 2022-06-07 | 盐城市崇达石化机械有限公司 | Energy-saving blowout prevention and pressure relief device for offshore fracturing wellhead |
| CN115324516A (en) * | 2022-10-13 | 2022-11-11 | 东营华辰石油装备有限公司 | Air bag compensation type polish rod sealer for oil pumping unit |
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