CN113586002A - Oil field well head safety blowout preventer - Google Patents
Oil field well head safety blowout preventer Download PDFInfo
- Publication number
- CN113586002A CN113586002A CN202111145184.7A CN202111145184A CN113586002A CN 113586002 A CN113586002 A CN 113586002A CN 202111145184 A CN202111145184 A CN 202111145184A CN 113586002 A CN113586002 A CN 113586002A
- Authority
- CN
- China
- Prior art keywords
- polished rod
- rod fixing
- fixing seat
- shell
- fixing base
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 230000002265 prevention Effects 0.000 claims description 26
- 239000004065 semiconductor Substances 0.000 claims description 20
- 238000005057 refrigeration Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 17
- 239000007921 spray Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 3
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 3
- 241001330002 Bambuseae Species 0.000 claims description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 3
- 239000011425 bamboo Substances 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 32
- 239000010779 crude oil Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 9
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000001125 extrusion Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012856 packing Methods 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- 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
- E21B36/00—Heating, cooling or insulating arrangements for boreholes or wells, e.g. for use in permafrost zones
- E21B36/001—Cooling arrangements
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a safety blowout preventer for an oil field wellhead, relates to the technical field of well drilling wellhead safety protection devices, and aims to solve the problem that a polished rod in the existing well drilling wellhead is broken due to various factors to cause blowout. The utility model discloses a sealing device, including mounting joint, first polished rod fixing base, second polished rod fixing base, first polished rod passageway, arc compression piece, the arc compression piece is close to the integrative spacing seat that slides that is provided with of one end of shell, sealing cover plate, first polished rod fixing base and second polished rod fixing base below all install plugging device.
Description
Technical Field
The invention relates to the technical field of well drilling wellhead safety protection devices, in particular to an oil field wellhead safety blowout preventer.
Background
An oil well is a borehole drilled by a drilling method. After drilling oil layer, the oil layer casing is set, and the cement is injected into the annular space between casing and well wall to maintain well wall and seal oil, gas and water layer, and then the oil layer is jetted with perforating gun to form channel and polished rod is set. Because the sucker rod is positioned at the uppermost part of the sucker rod, the stress is the largest, the diameter of the polished rod is larger than that of the sucker rod, the requirement on the strength level is higher, the surface is smoother, the polished rod is mainly used for being combined with a packing in a packing box to seal a well mouth and prevent oil, gas and water from leaking, and then the connection transition between the sucker rod and a rope hanger is realized, and various operations of the well mouth, such as pump collision, pump hanging adjustment and the like, are realized.
However, in the development of the oil field wellhead, on one hand, with the long-term use of the polish rod, fine cracks are easily generated at high stress points of the polish rod under the influence of bending stress and stress point concentration at a connection part, the cracks extend along the vertical direction of a stress axis along the time, and finally fatigue fracture occurs, on the other hand, a wellhead is frequently punctured at a contact gap between a wellhead packing and the polish rod under the influence of high temperature and high pressure of steam, so that petroleum cannot be controlled, and a blowout phenomenon is caused.
Disclosure of Invention
The invention aims to provide a safety blowout preventer for an oil field wellhead, which aims to solve the problem of blowout caused by breakage of a polish rod in a drilling wellhead due to various factors in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a safety blowout preventer for an oil field wellhead comprises an installation joint, wherein a shell is integrally arranged at the upper end of the installation joint, a sealing cover plate is arranged on the upper end face of the shell and is fixed with the shell in a sealing manner through bolts, a blowout prevention pressure relief cavity is arranged inside the shell, a first polished rod fixing seat is arranged at the lower end of the blowout prevention pressure relief cavity, a second polished rod fixing seat is arranged at the upper end of the blowout prevention pressure relief cavity, polished rod channels are respectively arranged at the middle positions inside the first polished rod fixing seat and the second polished rod fixing seat, a polished rod is arranged at the upper end of the sealing cover plate, the lower end of the polished rod penetrates through the sealing cover plate and the polished rod channels and extends to the lower side of the installation joint, arc-shaped pressure blocks are respectively arranged on two sides above the first polished rod fixing seat and the second polished rod fixing seat, and a sliding limiting seat is integrally arranged at one end, close to the shell, of each arc-shaped pressure block, and slide spacing seat and shell sliding connection, plugging device is all installed to one side of sealed apron, first polished rod fixing base and second polished rod fixing base below, the one end that plugging device is located the shell inside is provided with spherical groove, the internally mounted in spherical groove has rubber seal ball, and the one end and the polished rod of rubber seal ball laminate mutually.
Preferably, bolster adjusting device is all installed to the outside of the spacing seat of slip, and bolster adjusting device and shell sealing fixed, the one end of the spacing seat of slip extends to bolster adjusting device's inside, be equipped with six second supporting spring that are annular evenly distributed between spacing seat of slip and the bolster adjusting device, and the both ends of second supporting spring respectively with slip spacing seat and bolster adjusting device fixed connection, the bottom of first polished rod fixing base and second polished rod fixing base is all integrative to be provided with sealing bottom plate, and sealing bottom plate and shell pass through spacing groove sliding fit, effectively protect the polished rod, reduce the influence that receives bending stress and junction stress point to concentrate.
Preferably, the upper end of first polished rod fixing base and second polished rod fixing base is the circular cone structure, the arc receives the lower extreme of piece and is the inclined plane structure, and the arc receives the inclined plane structure of piece bottom and the circular cone structure of first polished rod fixing base and second polished rod fixing base upper end to laminate mutually, and the extrusion is down turned into the horizontal force with the vertical force, makes the arc receive the piece and drives the spacing seat of slip and produce the extrusion to second supporting spring, makes it take place elastic deformation.
Preferably, the intermediate position department of terminal surface all is provided with the hemisphere type draw-in groove under sealed apron, first polished rod fixing base and the second polished rod fixing base, and rubber seal ball and hemisphere type draw-in groove looks adaptation, plugging device's inside is provided with the shutoff chamber, the inside fixed mounting in shutoff chamber has first supporting spring, first supporting spring's one end fixed mounting has the electro-magnet, and the one end of electro-magnet and the laminating of rubber seal ball mutually, the outer wall inlayer of rubber seal ball is provided with the iron sheet, and through this kind of mode, the mode that crude oil impact was alleviated in the utilization level pressure release can effectively improve well head blowout preventer's withstand voltage effect, and the initial velocity is too fast when avoiding crude oil to spray produces the destruction to the device wholly in the twinkling of an eye.
Preferably, the inside of first polished rod fixing base is equipped with four first oil spray prevention holes that are annular evenly distributed, the inside of second polished rod fixing base is equipped with two sets of second oil spray prevention holes, and every group second oil spray prevention hole is provided with eight, and eight second oil spray prevention holes are annular evenly distributed, the diameter of first oil spray prevention hole is greater than the second oil spray prevention hole, because the second oil spray prevention hole is less and more intensive in first oil spray prevention hole diameter, further forms slowing down crude oil injection speed for injection pressure can not be too concentrated.
Preferably, the cooling base is installed to the lower extreme of erection joint, install semiconductor electron refrigeration piece in the section of thick bamboo dress inner wall of cooling base, heat conduction metal sheet is installed to the inboard of semiconductor electron refrigeration piece, and the cold junction of semiconductor electron refrigeration piece is fixed with the adhesion of heat conduction metal sheet, radiating fin is installed in the outside of semiconductor electron refrigeration piece, the inside intermediate position department of cooling base is provided with the cooling chamber, effectively reduces the temperature in polished rod lower limb area, avoids wellhead packing and polished rod contact gap department to receive the influence of high temperature to produce the thorn hourglass.
Preferably, adjusting bolt is all installed to bolster adjusting device's outside, adjusting bolt's one end is provided with the screw thread regulation pole, and the one end of screw thread regulation pole extends to bolster adjusting device's inside, and screw thread regulation pole and bolster adjusting device screw-thread fit, the one end fixed mounting of screw thread regulation pole has the briquetting, and the briquetting is the cylinder structure, and in the high-efficient time quantum of well head exploitation, through drawing the briquetting far away in order to improve buffering effect, effectively become the protection to the optical rod, the briquetting extends to the nearest under conventional state, closely laminates to the spacing seat that slides, further improves the steadiness of polished rod in this position department.
Preferably, an O-shaped sealing ring is arranged between the polish rod and the polish rod channel.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention adopts a multi-level damping type buffer structure, the polish rod is fixedly arranged in the polish rod channel inside the first polish rod fixing seat and the second polish rod fixing seat, the two sides of the upper end of the polish rod fixing seat are respectively provided with an arc-shaped pressure-bearing block, the pressure inside a well during crude oil collection of the polish rod can generate rising pressure on the polish rod, so as to drive the polish rod fixing seat to move upwards, the polish rod fixing seat can be ensured to move in a limited space under the matching of the sealing bottom plate and the limiting groove, the integral stability loss caused by excessive displacement is avoided, at the moment, the upper end surface of the polish rod fixing seat is contacted with the lower end surface of the arc-shaped pressure-bearing block, as the upper end surfaces of the first polish rod fixing seat and the second polish rod fixing seat are both in a conical structure, and simultaneously, the lower end surface of the arc-shaped pressure-bearing block is also in an inclined surface structure, vertical force is converted into horizontal force under extrusion, so that the arc-shaped pressure-bearing block drives the sliding limiting seat to extrude the second support spring, make it take place elastic deformation, can alleviate pressure under the deformation effect to effectively protect the polished rod, reduce the influence that receives bending stress and junction stress point to concentrate.
2. The invention is provided with the plugging device, the rubber sealing ball is positioned between the polish rod and the spherical groove under the conventional state and rolls along with the vertical movement of the polish rod, if the polish rod is broken in the using process, one end of the polish rod loses the support of the rubber sealing ball, the rubber sealing ball is ejected out of the spherical groove under the action of the first supporting spring, under the jetting action of crude oil, the rubber sealing ball is extruded in the hemispherical clamping groove at the lower end of the polish rod fixing seat, the large-caliber channel is blocked, the crude oil at the lowest part can only pass through the first oil injection preventing hole in the first polish rod fixing seat, the jetting speed of the crude oil can be reduced, the huge pressure of the crude oil on the first polish rod fixing seat can be reduced, and then the crude oil passes through the second oil injection preventing hole on the second polish rod fixing seat after filling the space between the first polish rod fixing seat and the second polish rod fixing seat, because the second prevents that the nozzle hole is less and more intensive than first preventing that the nozzle hole diameter further forms slowing down to crude oil jet velocity, make injection pressure can not be too concentrated, crude oil after the final pressure release is sealed by the rubber ball sealer in the top of preventing spouting the pressure release chamber, thereby avoid the emergence of blowout phenomenon, through this kind of mode, utilize the mode that the crude oil impact is alleviated in the level pressure release, can effectively improve well head blowout preventer's withstand voltage effect, the initial velocity produces the destruction to the device wholly in the twinkling of an eye too fast when avoiding crude oil to spout.
3. The cooling base is arranged on the lower end face of the mounting joint. The semiconductor electronic refrigeration piece is installed inside the well head, the semiconductor electronic refrigeration piece is opened in the using process, when direct current passes through a galvanic couple formed by serially connecting two different types of semiconductor materials, heat dissipation and absorption are respectively realized at two ends of the galvanic couple, a cold end is formed at the inner side of the semiconductor electronic refrigeration piece, the temperature of the cold end is transmitted towards a cooling cavity through a heat conduction metal plate, the ambient air is cooled, the density of the cold air is higher, the cold air gradually sinks in a well drilling space, the temperature in the lower end area of the polished rod can be effectively reduced due to the combination of internal high-temperature air, and the phenomenon that the contact gap between the well head packing and the polished rod is influenced by high temperature to generate puncture leakage is avoided.
4. According to the invention, the buffer part adjusting device is arranged, the buffer part adjusting device can adjust the displacement distance of the arc-shaped pressed block, the press block is positioned on one side far away from the sliding limiting seat in a conventional state, the maximum distance of vertical movement of the polished rod fixing seat is obtained at the moment, the polished rod has high activity frequency, when the buffer distance needs to be adjusted, only the adjusting bolt needs to be rotated, the press block is driven to move towards one end close to the sliding limiting seat under the friction fit of the thread adjusting rod and the buffer part adjusting device, so that the displacement distance of the arc-shaped pressed block can be limited, in this way, in a wellhead exploitation high-efficiency time period, the buffer effect is improved by pulling the press block far, the protection is effectively formed on the polished rod, the press block extends to the shortest distance in the conventional state, the press block is tightly attached to the sliding limiting seat, and the stability of the polished rod at the position is further improved.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the internal structure of the present invention;
FIG. 3 is a distribution explosion diagram of the polished rod fixing seat and the arc-shaped pressed block of the present invention;
FIG. 4 is an enlarged view of a portion of the area A of FIG. 2 in accordance with the present invention;
FIG. 5 is an exploded view of the plugging device structure of the present invention;
FIG. 6 is an enlarged view of a portion of the area B of FIG. 2 in accordance with the present invention;
fig. 7 is a partial enlarged view of the area C in fig. 2 according to the present invention.
In the figure: 1. a housing; 2. installing a connector; 3. sealing the cover plate; 4. a polish rod; 5. a blowout prevention pressure relief cavity; 6. a first polish rod fixing seat; 7. a second polish rod fixing seat; 8. a buffer adjusting device; 9. a sliding limiting seat; 10. an arc-shaped compression block; 11. an O-shaped sealing ring; 12. a hemispherical neck; 13. a rubber sealing ball; 14. a plugging device; 15. cooling the base; 16. adjusting the bolt; 17. a first oil spout prevention hole; 18. a second oil spout prevention hole; 19. a polish rod channel; 20. sealing the bottom plate; 21. a limiting groove; 22. plugging the cavity; 23. a first support spring; 24. an electromagnet; 25. a spherical groove; 26. a threaded adjusting rod; 27. briquetting; 28. a second support spring; 29. a cooling chamber; 30. a heat conductive metal plate; 31. a semiconductor electronic refrigeration sheet; 32. and (4) radiating fins.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-7, an embodiment of the present invention is shown: a safety blowout preventer for an oil field wellhead comprises an installation joint 2, a shell 1 is integrally arranged at the upper end of the installation joint 2, a sealing cover plate 3 is arranged on the upper end face of the shell 1, the sealing cover plate 3 and the shell 1 are fixed in a sealing manner through bolts, a blowout prevention pressure relief cavity 5 is arranged inside the shell 1, a first polish rod fixing seat 6 is arranged at the lower end of the blowout prevention pressure relief cavity 5, a second polish rod fixing seat 7 is arranged at the upper end of the blowout prevention pressure relief cavity 5, polish rod channels 19 are respectively arranged at the middle positions inside the first polish rod fixing seat 6 and the second polish rod fixing seat 7, a polish rod 4 is arranged at the upper end of the sealing cover plate 3, the lower end of the polish rod 4 penetrates through the sealing cover plate 3 and the polish rod channels 19 to extend to the lower portion of the installation joint 2, arc-shaped blocks 10 are respectively arranged on two sides above the first polish rod fixing seat 6 and the second polish rod fixing seat 7, and a sliding limiting seat 9 is integrally arranged at one end, close to the pressed shell 1, of the arc-shaped pressed blocks 10, and the sliding limiting seat 9 is connected with the housing 1 in a sliding manner, the plugging device 14 is installed on one side below the sealing cover plate 3, the first polished rod fixing seat 6 and the second polished rod fixing seat 7, the ball-shaped groove 25 is formed in one end, located inside the housing 1, of the plugging device 14, the rubber sealing ball 13 is installed inside the ball-shaped groove 25, and one end of the rubber sealing ball 13 is attached to the polished rod 4.
Furthermore, the outer part of the sliding limiting seat 9 is provided with a buffer adjusting device 8, the buffer adjusting device 8 is fixed with the shell 1 in a sealing way, one end of the sliding limiting seat 9 extends to the inner part of the buffer adjusting device 8, six second supporting springs 28 which are uniformly distributed in an annular shape are arranged between the sliding limiting seat 9 and the buffer adjusting device 8, two ends of each second supporting spring 28 are respectively fixedly connected with the sliding limiting seat 9 and the buffer adjusting device 8, the bottoms of the first polished rod fixing seat 6 and the second polished rod fixing seat 7 are respectively and integrally provided with a sealing bottom plate 20, the sealing bottom plates 20 are in sliding fit with the shell 1 through limiting grooves 21, under the matching of the sealing bottom plates 20 and the limiting grooves 21, the polished rod fixing seat can be ensured to move in a limited space, the integral stability loss caused by excessive displacement is avoided, and the upper end surface of the polished rod fixing seat is contacted with the lower end surface of the arc-shaped compression block 10 at the moment, effectively protect the polished rod, reduce the influence that receives bending stress and junction stress point concentration.
Further, the upper end of first polished rod fixing base 6 and second polished rod fixing base 7 is the circular cone structure, the arc receives the lower extreme of piece 10 and is the inclined plane structure, and the arc receives the inclined plane structure of piece 10 bottom and the circular cone structure of first polished rod fixing base 6 and second polished rod fixing base 7 upper end to laminate mutually, because the up end of first polished rod fixing base 6 and second polished rod fixing base 7 is the circular cone structure, the arc receives the lower terminal surface of piece 10 also to be the inclined plane structure simultaneously, turn into the horizontal force with the vertical force under the extrusion, make the arc receive piece 10 drive the spacing seat of slip 9 and produce the extrusion to second supporting spring 28, make it take place elastic deformation, can alleviate pressure under the deformation effect.
Further, the sealing cover plate 3, the intermediate position department of terminal surface all is provided with hemisphere type draw-in groove 12 under first polished rod fixing base 6 and the second polished rod fixing base 7, and rubber seal ball 13 and hemisphere type draw-in groove 12 looks adaptation, the inside of plugging device 14 is provided with shutoff chamber 22, the inside fixed mounting in shutoff chamber 22 has first supporting spring 23, the one end fixed mounting of first supporting spring 23 has electro-magnet 24, and the one end of electro-magnet 24 laminates with rubber seal ball 13 mutually, the outer wall inlayer of rubber seal ball 13 is provided with the iron sheet, through being electro-magnet 24 circular telegram in the installation of rubber seal ball 13, suck the inside rubber seal ball 13 of hemisphere type draw-in groove 12 under the magnetic force effect, cut off the power supply for electro-magnet 24 after rubber seal ball 13 and polished rod 4 contact, rubber seal ball 13 can not in time pop out when avoiding polished rod 4 to break.
Further, the inside of first polished rod fixing base 6 is equipped with four first oil spout holes 17 that are annular evenly distributed, the inside of second polished rod fixing base 7 is equipped with two sets of second oil spout holes 18, every group second oil spout hole 18 is provided with eight, and eight second oil spout holes 18 are annular evenly distributed, the diameter of first oil spout hole 17 is greater than second oil spout hole 18, first oil spout hole 17 not only can reduce the jet velocity of crude oil, can reduce the huge pressure that crude oil produced to first polished rod fixing base 6 simultaneously, second oil spout hole 18 is compared in that first oil spout hole 17 diameter is less and more intensive, further form slowing down crude oil jet velocity, make jet pressure can not too concentrate.
Further, cooling base 15 is installed to the lower extreme of attach fitting 2, install semiconductor electron refrigeration piece 31 in the section of thick bamboo dress inner wall of cooling base 15, heat conduction metal sheet 30 is installed to the inboard of semiconductor electron refrigeration piece 31, and the cold end of semiconductor electron refrigeration piece 31 is fixed with the adhesion of heat conduction metal sheet 30, radiating fin 32 is installed in the outside of semiconductor electron refrigeration piece 31, cooling base 15 inside intermediate position department is provided with cooling chamber 29, open semiconductor electron refrigeration piece 31 in the use, when the galvanic couple that the direct current formed through the series connection of the semiconductor material of two kinds of different grade types, realize thermal giving off respectively and absorbing at the both ends of galvanic couple, form the cold end at the inboard of semiconductor electron refrigeration piece 31, the cold end temperature passes through heat conduction metal sheet 30 and towards cooling chamber 29 transmission, cool down the air on every side.
Further, the outer portions of the cushion adjusting devices 8 are all provided with adjusting bolts 16, one end of each adjusting bolt 16 is provided with a threaded adjusting rod 26, one end of each threaded adjusting rod 26 extends to the inner portion of the cushion adjusting device 8, and the screw thread adjusting rod 26 is screw-engaged with the buffer adjusting device 8, one end of the screw thread adjusting rod 26 is fixedly provided with a pressing block 27, the pressing block 27 is in a cylindrical structure, the buffer adjusting device 8 can adjust the displacement distance of the arc-shaped pressed block 10, the pressing block is positioned on one side far away from the sliding limiting seat 9 in a conventional state, the maximum distance of the vertical movement of the polished rod fixing seat is the maximum distance, the polished rod has high activity frequency, when the buffering distance needs to be adjusted, only the adjusting bolt 16 needs to be rotated, the press block 27 is driven by the screw thread adjusting rod 26 and the buffer adjusting device 8 under friction fit to move towards one end close to the sliding limiting seat 9, so that the displacement distance of the arc-shaped pressed block 10 can be limited.
Further, an O-ring 11 is installed between the polish rod 4 and the polish rod passage 19.
The working principle is as follows: when in use, the polished rod 4 generates rising pressure to the polished rod 4 in the process of crude oil collection, thereby driving the polished rod fixing seat to move upwards, ensuring the polished rod fixing seat to move in a limited space under the matching of the sealing bottom plate 20 and the limiting groove 21, and at the moment, the upper end surface of the polished rod fixing seat contacts with the lower end surface of the arc-shaped pressed block 10, because the upper end surfaces of the first polished rod fixing seat 6 and the second polished rod fixing seat 7 are both in a conical structure, and the lower end surface of the arc-shaped pressed block 10 is also in an inclined plane structure, the vertical force is converted into horizontal force under extrusion, so that the arc-shaped pressed block 10 drives the sliding limiting seat 9 to extrude the second supporting spring 28, so that the second supporting spring is elastically deformed, the pressure can be relieved under the deformation effect, thereby effectively protecting the polished rod 4, and reducing the influence of bending stress and stress concentration of stress points at joints, if the polish rod 4 is broken in the using process, one end of the polish rod 4 loses the support of the rubber sealing ball 13, the rubber sealing ball 13 is ejected out of the spherical groove 25 under the action of the first supporting spring 23, the rubber sealing ball 13 is extruded in the hemispherical clamping groove 12 at the lower end of the polish rod fixing seat under the action of the injection of crude oil, the large-caliber channel is blocked, the lowest crude oil can only pass through the first oil-proof hole 17 in the first polish rod fixing seat 6, the injection speed of the crude oil can be reduced, the huge pressure of the crude oil on the first polish rod fixing seat 6 can be reduced, the crude oil fills the space between the first polish rod fixing seat 6 and the second polish rod fixing seat 7 and then passes through the second oil-proof hole 18 in the second polish rod fixing seat 7, and the second oil-proof hole 18 has smaller diameter and is denser than the first oil-proof hole 17, the jet speed of the crude oil is further slowed down, so that the jet pressure is not too concentrated, and the crude oil subjected to final pressure relief is sealed by the rubber sealing ball 13 at the uppermost end of the blowout-preventing pressure-relief cavity, so that the blowout phenomenon is avoided.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. The utility model provides an oil field well head safety blowout preventer, includes erection joint (2), its characterized in that: the mounting joint is characterized in that a shell (1) is integrally arranged at the upper end of the mounting joint (2), a sealing cover plate (3) is arranged on the upper end face of the shell (1), the sealing cover plate (3) and the shell (1) are fixed in a sealing mode through bolts, a blowout prevention pressure relief cavity (5) is arranged inside the shell (1), a first polished rod fixing seat (6) is arranged at the lower end of the blowout prevention pressure relief cavity (5), a second polished rod fixing seat (7) is arranged at the upper end of the blowout prevention pressure relief cavity (5), polished rod channels (19) are arranged at the middle positions inside the first polished rod fixing seat (6) and the second polished rod fixing seat (7), a polished rod (4) is arranged at the upper end of the sealing cover plate (3), the lower end of the polished rod (4) penetrates through the sealing cover plate (3) and the polished rod channels (19) to extend to the lower portion of the mounting joint (2), and arc-shaped pressure receiving blocks (10) are arranged on two sides above the first polished rod fixing seat (6) and the second polished rod fixing seat (7), the arc is pressed the one end an organic whole that piece (10) are close to shell (1) and is provided with slip spacing seat (9), and slides spacing seat (9) and shell (1) sliding connection, sealing cover plate (3), first polished rod fixing base (6) and second polished rod fixing base (7) below one side all install plugging device (14), plugging device (14) are located the inside one end of shell (1) and are provided with spherical groove (25), the internally mounted of spherical groove (25) has rubber seal ball (13), and the one end and polished rod (4) of rubber seal ball (13) laminate mutually.
2. The oilfield wellhead safety blowout preventer of claim 1, wherein: the utility model discloses a buffer stop device, including slip spacing seat (9), bolster adjusting device (8) are all installed to the outside of slip spacing seat (9), and bolster adjusting device (8) and shell (1) sealed fixed, the one end of slip spacing seat (9) extends to the inside of bolster adjusting device (8), be equipped with six second supporting spring (28) that are annular evenly distributed between slip spacing seat (9) and bolster adjusting device (8), and the both ends of second supporting spring (28) respectively with slip spacing seat (9) and buffer adjusting device (8) fixed connection, the bottom of first polished rod fixing base (6) and second polished rod fixing base (7) is all integrative to be provided with sealing bottom plate (20), and sealing bottom plate (20) and shell (1) through spacing groove (21) sliding fit.
3. The oilfield wellhead safety blowout preventer of claim 1, wherein: the upper ends of the first polished rod fixing seat (6) and the second polished rod fixing seat (7) are conical structures, the lower end of the arc-shaped compression block (10) is of an inclined plane structure, and the inclined plane structure at the bottom of the arc-shaped compression block (10) is attached to the conical structures at the upper ends of the first polished rod fixing seat (6) and the second polished rod fixing seat (7).
4. The oilfield wellhead safety blowout preventer of claim 1, wherein: the middle position department of terminal surface all is provided with hemisphere type draw-in groove (12) under sealed apron (3), first polished rod fixing base (6) and second polished rod fixing base (7), and rubber seal ball (13) and hemisphere type draw-in groove (12) looks adaptation, the inside of plugging device (14) is provided with shutoff chamber (22), the inside fixed mounting in shutoff chamber (22) has first supporting spring (23), the one end fixed mounting of first supporting spring (23) has electro-magnet (24), and the one end of electro-magnet (24) and rubber seal ball (13) laminate mutually, the outer wall inlayer of rubber seal ball (13) is provided with the iron sheet.
5. The oilfield wellhead safety blowout preventer of claim 1, wherein: the inside of first polished rod fixing base (6) is equipped with four first oil spray prevention nozzle (17) that are annular evenly distributed, the inside of second polished rod fixing base (7) is equipped with two sets of second oil spray prevention nozzle (18), and every group second oil spray prevention nozzle (18) is provided with eight, and eight second oil spray prevention nozzle (18) are annular evenly distributed, the diameter of first oil spray prevention nozzle (17) is greater than second oil spray prevention nozzle (18).
6. The oilfield wellhead safety blowout preventer of claim 1, wherein: cooling base (15) are installed to the lower extreme of erection joint (2), install semiconductor electron refrigeration piece (31) in the section of thick bamboo dress inner wall of cooling base (15), heat conduction metal sheet (30) are installed to the inboard of semiconductor electron refrigeration piece (31), and the cold junction of semiconductor electron refrigeration piece (31) is fixed with heat conduction metal sheet (30) adhesion, radiating fin (32) are installed in the outside of semiconductor electron refrigeration piece (31), the inside intermediate position department of cooling base (15) is provided with cooling chamber (29).
7. The oilfield wellhead safety blowout preventer of claim 2, wherein: adjusting bolt (16) are all installed to the outside of bolster adjusting device (8), the one end of adjusting bolt (16) is provided with screw thread adjusting rod (26), and the one end of screw thread adjusting rod (26) extends to the inside of bolster adjusting device (8), and screw thread adjusting rod (26) and bolster adjusting device (8) screw-thread fit, the one end fixed mounting of screw thread adjusting rod (26) has briquetting (27), and briquetting (27) are the cylinder structure.
8. The oilfield wellhead safety blowout preventer of claim 1, wherein: an O-shaped sealing ring (11) is arranged between the polish rod (4) and the polish rod channel (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111145184.7A CN113586002B (en) | 2021-09-28 | 2021-09-28 | Oil field well head safety blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111145184.7A CN113586002B (en) | 2021-09-28 | 2021-09-28 | Oil field well head safety blowout preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113586002A true CN113586002A (en) | 2021-11-02 |
| CN113586002B CN113586002B (en) | 2021-12-03 |
Family
ID=78242467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111145184.7A Active CN113586002B (en) | 2021-09-28 | 2021-09-28 | Oil field well head safety blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113586002B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526029A (en) * | 2022-03-08 | 2022-05-24 | 高均红 | Prevent that blowout promptly keeps away christmas tree of dangerous function |
| CN114876001A (en) * | 2022-05-12 | 2022-08-09 | 河南京通建筑工程有限公司 | Sponge city resident rainwater ecosystem |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
| CN117804825A (en) * | 2024-03-01 | 2024-04-02 | 黑龙江省农业科学院水稻研究所 | Remote control automatic sampling device in paddy field |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2614262Y (en) * | 2003-04-16 | 2004-05-05 | 赵剑明 | Multifunctional well mouth polished rod sealing equipment |
| WO2018032098A1 (en) * | 2016-08-17 | 2018-02-22 | Western Oiltools Ltd. | Blowout preventer with integrated flow tee, stuffing box bottom, and grease fitting |
| CN107795295A (en) * | 2017-11-03 | 2018-03-13 | 东北石油大学 | A kind of well head adjustable energy-storing seals blowout hookup |
| US20180245411A1 (en) * | 2015-08-28 | 2018-08-30 | Managed Pressure Operations Pte. Ltd | Method of operating a drilling system |
| CN208267813U (en) * | 2018-06-04 | 2018-12-21 | 阜宁县石油机械有限公司 | A kind of double sealing high pressure polished rod sealer |
| CN209277840U (en) * | 2018-11-26 | 2019-08-20 | 山东博康石油工程技术有限公司 | A kind of blowout-prevention polished rod sealer |
| CN211573468U (en) * | 2020-01-06 | 2020-09-25 | 刘少杰 | Novel offset-adjustable oil extraction wellhead blowout preventer |
-
2021
- 2021-09-28 CN CN202111145184.7A patent/CN113586002B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2614262Y (en) * | 2003-04-16 | 2004-05-05 | 赵剑明 | Multifunctional well mouth polished rod sealing equipment |
| US20180245411A1 (en) * | 2015-08-28 | 2018-08-30 | Managed Pressure Operations Pte. Ltd | Method of operating a drilling system |
| WO2018032098A1 (en) * | 2016-08-17 | 2018-02-22 | Western Oiltools Ltd. | Blowout preventer with integrated flow tee, stuffing box bottom, and grease fitting |
| CN107795295A (en) * | 2017-11-03 | 2018-03-13 | 东北石油大学 | A kind of well head adjustable energy-storing seals blowout hookup |
| CN208267813U (en) * | 2018-06-04 | 2018-12-21 | 阜宁县石油机械有限公司 | A kind of double sealing high pressure polished rod sealer |
| CN209277840U (en) * | 2018-11-26 | 2019-08-20 | 山东博康石油工程技术有限公司 | A kind of blowout-prevention polished rod sealer |
| CN211573468U (en) * | 2020-01-06 | 2020-09-25 | 刘少杰 | Novel offset-adjustable oil extraction wellhead blowout preventer |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526029A (en) * | 2022-03-08 | 2022-05-24 | 高均红 | Prevent that blowout promptly keeps away christmas tree of dangerous function |
| CN114526029B (en) * | 2022-03-08 | 2023-08-25 | 大庆丹枫石油技术开发有限公司 | Christmas tree with blowout prevention emergency risk avoidance function |
| CN114876001A (en) * | 2022-05-12 | 2022-08-09 | 河南京通建筑工程有限公司 | Sponge city resident rainwater ecosystem |
| CN114876001B (en) * | 2022-05-12 | 2023-09-22 | 河南京通建筑工程有限公司 | Sponge city resident rainwater ecosystem |
| CN114934755A (en) * | 2022-07-25 | 2022-08-23 | 帕特恩(大庆)石油科技有限公司 | Composite particle sealing device for oil pumping unit wellhead and use method thereof |
| CN117804825A (en) * | 2024-03-01 | 2024-04-02 | 黑龙江省农业科学院水稻研究所 | Remote control automatic sampling device in paddy field |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113586002B (en) | 2021-12-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113586002B (en) | Oil field well head safety blowout preventer | |
| US20200080379A1 (en) | Drilling speed improvement device capable of producing both hydraulic pulse and impact vibration | |
| US10036213B2 (en) | Connection structure between pipe body and joint of aluminum alloy drill pipe | |
| CN211852342U (en) | From heat dissipation type buffering pneumatic cylinder convenient to installation | |
| CN105781464A (en) | Single-cylinder and double-acting hydraulic while-drilling jar | |
| CN211231228U (en) | Hexagonal socket head cap screw for nuclear power station | |
| CN208203155U (en) | The reciprocating absorbing tool of external spring | |
| CN201606031U (en) | Single hydraulic cylinder driving flashboard blowout preventer | |
| CN110848431B (en) | Double-sealing spring type safety valve | |
| CN114346293A (en) | High-efficient diamond bit that can rapid cooling | |
| CN211343843U (en) | Top drive protection shock absorber | |
| CN109798073B (en) | Diamond-impregnated drilling tool for crushing rock by friction heat energy | |
| CN208764212U (en) | A kind of nitrogen gas spring backlash journey security system | |
| CN113530486A (en) | Oil recovery well head seal structure | |
| CN202492797U (en) | Anti-drawing height adjusting spherical bearing | |
| CN109854166B (en) | Double-buffering drilling pressure automatic control tool for electric drilling | |
| CN110439471A (en) | A kind of cutting depth self-regulating mechanism and drill bit | |
| CN214327021U (en) | Wet sprayer lifting device | |
| CN220815539U (en) | Hydraulic pressurizer with adjustable weight on bit | |
| CN217977428U (en) | Hydraulic control pressure balance valve | |
| CN201588593U (en) | Double-ball-joint deviation adjusting oil injection blowout control stopper | |
| CN210661000U (en) | Inner hexagon bolt for fixing elevator guide rail bracket | |
| CN211127039U (en) | Right-angle electric power hanging plate convenient for distance adjustment | |
| CN208934645U (en) | A kind of drilling rod blowout hookup | |
| CN203742437U (en) | Hydraulic pressurizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Safety Blowout Prevention Device for Oilfield Wellheads Effective date of registration: 20230621 Granted publication date: 20211203 Pledgee: Qilu Bank Co.,Ltd. Dongying Kenli Branch Pledgor: SHANDONG YUKOS PETROLEUM EQUIPMENT CO.,LTD. Registration number: Y2023980044657 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |