CN213743358U

CN213743358U - Overweight self-unloading type oil bailing swab

Info

Publication number: CN213743358U
Application number: CN202022737001.8U
Authority: CN
Inventors: 苏一鑫; 袁振星; 苏培福
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-07-20
Anticipated expiration: 2030-11-23

Abstract

The utility model relates to a swab technical field specifically is overweight self-discharging formula swab for solve among the prior art swab and do not possess the release function, can not be timely unload unnecessary oil mass, thereby make the problem of fishing for oil operation difficulty. The utility model discloses a center tube, an oil inlet section of thick bamboo, spring clamp plate and a sliding barrel, spring clamp plate can slide in the sliding barrel, it has a plurality of oil outlet holes to open on the sliding barrel, the cover is equipped with the tonnage spring on the center tube, spring clamp plate is last to open there are a plurality of through-holes, from the bottom up installs anti-tee ball seat in proper order in the oil inlet section of thick bamboo, open at the middle part of anti-tee ball seat has the relief pressure hole, the upper portion of anti-tee ball seat still is equipped with the release ball seat, install anti-tee ball on the release ball seat, coupling mechanism is installed to the top surface of release ball seat. The utility model discloses when going upward the in-process oil overweight, finally make anti-ball no longer seal the release hole, oil spills from the release hole and goes to the effect that reaches the release that can be timely.

Description

Overweight self-unloading type oil bailing swab

Technical Field

The utility model relates to an oil bailing swab technical field, more specifically relate to overweight self-discharging formula oil bailing swab.

Background

Petroleum is one of the main objects of geological exploration, is a viscous dark brown liquid called as "industrial blood", the upper part of the crust has petroleum storage, the nature of petroleum varies with the place of production, the main component is the mixture of various alkanes, cyclanes and aromatic hydrocarbons, but the storage amount of petroleum in the crust is limited, which belongs to non-renewable energy, oil fishing is a high-difficulty operation project of underground construction, and an oil fishing swab is usually needed in the process of oil fishing.

In the prior art, the oil bailing swab comprises a balance weight assembly, a liquid inlet assembly, a sealing assembly and a liquid outlet assembly which are sequentially connected from bottom to top, wherein the balance weight assembly comprises a balance weight pipe guide head which is connected with a balance weight pipe; the liquid inlet assembly comprises a liquid inlet joint, and the liquid inlet joint is connected with the reducing joint; the sealing assembly comprises a central pipe, and a base plate, a pressing ring, a sealing leather cup, a compression nut and a locking nut are sequentially arranged on the central pipe from bottom to top; the liquid outlet assembly comprises an upper cap and a liquid outlet valve cover, a pressure cap is connected in the liquid outlet valve cover, and a valve seat, a valve ball, a stop head and a stop block are sequentially arranged on the pressure cap; the counterweight pipe is connected with the liquid inlet joint, the reducer union is connected with the central pipe, the central pipe is connected with the liquid outlet valve cover, and the liquid outlet valve cover is connected with the upper cap. When the oil bailing swab is used, the upper part of the oil bailing swab is tied by a steel wire, then the oil bailing swab is placed in an oil pipe, and during the downward stroke, the oil bailing swab descends in the oil pipe under the action of the weight of the steel wire rope, the weight of a weighting rod and the self weight of the swab, at the moment, a sealing leather cup is not pressed by an oil sleeve ring, is in an unexpanded state and has small friction force with the oil pipe, and when the swab descends to a specified depth below the liquid level, oil enters a central pipe of the swab from a hole of a liquid inlet joint, pushes a valve ball open and enters the inside of the oil pipe above the swab; during the upstroke, when the oil pressure was equal about the swab, the valve ball was closed, and the packing cup pressurized inflation pasted tight oil pipe inner wall, prevented that fluid in the oil pipe above the swab from leaking out, and control system control motor reversal at this moment drives the swab and goes upward, and the well head position is accomplished one time and is dragged for oily operation.

The change of underground air pressure is difficult to control, the pressure of most bottom layers of low-yield oil wells is too low, the negative pressure is too high during oil fishing operation, the conditions of too high tension and insufficient power of a steel wire rope are caused, drilling jamming or a series of underground accidents and the like can frequently occur, and the problems are mainly attributed to the fact that the oil fishing swab in the prior art does not have a pressure relief function and cannot timely unload redundant oil. Therefore, an urgent need exists for a bailing swab which can timely remove the excessive oil.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model aims to: the overweight self-unloading type oil bailing pump is used for solving the problems that the oil bailing pump in the prior art does not have a pressure relief function and cannot timely unload redundant oil, so that the oil bailing operation is difficult. The utility model discloses an install anti-Er ball on anti-Er ball seat, when going up in-process oil overweight, can make the center tube move down, coupling mechanism shifts up, finally makes anti-Er ball no longer seal the release hole, and oil spills from the release hole to the effect that reaches the release that can be timely, and then can reduce the difficult degree of fishing for oil operation.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the overweight self-discharging type oil bailing swab comprises a central tube, wherein a sealing leather cup is installed on the central tube, the lower part of the central tube is connected with an oil inlet cylinder, and the upper end of the central tube is connected with a spring pressing plate; still include the sliding barrel, spring plate can slide in the sliding barrel, it has a plurality of oil outlet holes to open on the sliding barrel, the cover is equipped with the tonnage spring that is located between spring plate and sliding barrel on the center tube, spring plate goes up to open has a plurality of through-holes, from the bottom up installs anti-tee ball seat in proper order in the oil feed section of thick bamboo, open at the middle part of anti-tee ball seat has the relief pressure hole, the upper portion of anti-tee ball seat still is equipped with the pressure relief ball seat that can reciprocate in the oil feed section of thick bamboo, install the anti-tee ball that can seal the relief pressure hole on the pressure relief ball seat, the coupling mechanism who passes the through-hole and is connected with the sliding barrel is installed to the top surface of pressure relief ball seat.

The preferable structure of the connecting mechanism is as follows: the connecting mechanism comprises a connecting rod which is arranged on the top surface of the inverted ball seat and penetrates through the through hole, the upper end of the connecting rod is connected with a connecting plate, and the connecting plate is connected with the inner wall of the sliding cylinder.

The central tube is provided with an upper fixed seat and a lower fixed seat which are positioned on the top surface and the bottom surface of the sealing packing cup respectively, and the central tube is provided with a closed hole communicated with the inside of the sealing packing cup.

An upper nut (16) and a lower nut 17 are mounted on the central tube 7, the upper nut (16) is in contact with the upper fixing seat 13, and the lower nut 17 is in contact with the lower fixing seat 6.

The lower part of the oil inlet cylinder is also connected with a balancing weight.

The top surface of the sliding cylinder is also provided with a carrying pole disc, and the carrying pole disc is provided with a connecting hole.

The utility model has the advantages as follows:

(1) the utility model discloses an install anti-Er ball on anti-Er ball seat, when going up in-process oil overweight, can make the center tube move down, coupling mechanism shifts up, finally makes anti-Er ball no longer seal the release hole, and oil spills from the release hole to the effect that reaches the release that can be timely, and then can reduce the difficult degree of fishing for oil operation.

(2) The utility model discloses in with the tonnage spring setting between the bottom of spring plate and oil feed section of thick bamboo, after the oil mass of uninstallation reaches certain volume, the spring reconversion drives the center tube and shifts up, and anti-ball and release ball seat move down and with release hole self-sealing under the effect of self gravity and oil pressure, and automatics can both play protection oil well and equipment and can not receive the damage at the too much and negative pressure of feed liquor excessively.

(3) The utility model discloses in through the oil mass that chooses for use different tonnage springs can the different tonnages of release, the pressure release is more scientific, also swift accurate.

(4) The utility model discloses install last nut and lower nut on the well center tube, go up nut and last fixing base contact, lower nut and lower fixing base contact. The upper nut and the lower nut are convenient for dismounting and mounting the sealing leather cup, and meanwhile, the tightness degree of the sealing leather cup is convenient to adjust.

(5) The utility model discloses the stretcher dish is still installed to well sliding barrel's top surface, and it has the connecting hole to open on the stretcher dish, and the principle of stretcher dish just as the bearing, and the steel wire is connected with the stretcher dish like this, drives the stretcher dish in the time of the steel wire pivoted and rotates, but the oil bailing swab can not rotate to can not make the steel wire winding together.

Drawings

FIG. 1 is a schematic view of the cross-sectional front view of the anti-ball of the present invention when closing the pressure relief hole;

FIG. 2 is a schematic view of the cross-sectional front view of the anti-ball of the present invention when the pressure relief hole is not closed;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 1 according to the present invention;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1 according to the present invention;

reference numerals: 1 balancing weight, 2 oil inlet cylinder, 3 anti-tee ball seat, 31 relief pressure hole, 4 relief pressure ball seats, 5 connecting rods, 6 lower fixing seats, 7 central tubes, 71 closed holes, 8 sliding cylinders, 81 oil outlet holes, 9 tonnage springs, 10 spring pressing plates, 101 through holes, 11 connecting plates, 12 stretcher discs, 121 connecting holes, 13 upper fixing seats, 14 sealing leather cups, 15 anti-tee balls, 16 upper nuts and 17 lower nuts.

Detailed Description

For a better understanding of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and the following embodiments.

Example (b):

as shown in fig. 1-4, the overweight self-discharging type oil bailing pump comprises a central tube 7, a sealing leather cup 14 is arranged on the central tube 7, an oil inlet cylinder 2 is connected to the lower part of the central tube 7, and a spring pressing plate 10 is connected to the upper end of the central tube 7; still include a slide cartridge 8, spring clamp plate 10 can slide in slide cartridge 8, it has a plurality of oil outlet holes 81 to open on the slide cartridge 8, the cover is equipped with the tonnage spring 9 that is located between spring clamp plate 10 and slide cartridge 8 on the center tube 7, spring clamp plate 10 is last to be opened there are a plurality of through-holes 101, from the bottom up installs anti-tee ball seat 3 in proper order in the oil feed cartridge 2, open at the middle part of anti-tee ball seat 3 has pressure relief hole 31, the upper portion of anti-tee ball seat 3 still is equipped with the release ball seat 4 that can reciprocate in the oil feed cartridge 2, install the anti-tee ball 15 that can seal pressure relief hole 31 on the release ball seat 4, the coupling mechanism who passes through-hole 101 and be connected with slide cartridge 8 is installed to the top surface of release ball seat 4.

The preferable structure of the connecting mechanism is as follows: the connecting mechanism comprises a connecting rod 5 which is arranged on the top surface of the inverted tee 3 and penetrates through the through hole 101, the upper end of the connecting rod 5 is connected with a connecting plate 11, and the connecting plate 11 is connected with the inner wall of the sliding cylinder 8.

Preferably, the central tube 7 is respectively provided with an upper fixed seat 13 and a lower fixed seat 6 which are positioned on the top surface and the bottom surface of the sealing leather cup 14, and the central tube 7 is provided with a closed hole 71 communicated with the inside of the sealing leather cup 14.

The working principle is as follows: when the oil bailing pump is needed to be used for bailing oil, the upper part of the oil inlet cylinder 2 can be fastened through a steel wire, then the oil bailing pump is placed in an oil pipe in a conventional mode, during the downward stroke, the oil bailing pump descends in the oil pipe under the action of the weight of the steel wire and the weight of the oil bailing pump, at the moment, the sealing leather cup 14 is in an unexpanded state and has small friction force with the oil pipe, when the pump descends to a specified depth below an oil inlet surface, oil enters the oil inlet pipe, the counter ball 15 is pushed upwards by the pressure of the oil, the oil enters the central pipe 7 from the pressure relief hole 31, then enters the oil inlet cylinder 2 from the central pipe 7 and flows out from the oil outlet hole 81 on the oil inlet cylinder 2; during the upward stroke, the pressure at the upper part of the ball 15 is higher than that at the lower part, so the ball 15 moves downwards to seal the pressure relief hole 31, meanwhile, the oil enters the sealing cup 14 through the sealing hole 71, and the sealing cup 14 expands to seal the oil pipe.

In the ascending process, if the oil is too heavy, the pressure of the top surface of the spring pressing plate 10 is larger than the pressure of the bottom surface, the oil presses the spring pressing plate 10 downwards, the spring pressing plate 10 presses the central tube 7 downwards, and meanwhile, as the oil bailing swab moves upwards, therefore, the sliding cylinder 8 will move upwards, and the sliding cylinder 8 will drive the connecting plate 11, the connecting rod 5, the pressure relief ball seat 4 and the inverse ball 15 to move upwards in turn, and finally the inverse ball 15 will not seal the pressure relief hole 31, so that the oil will flow out from the pressure relief hole 31 under the downward hydraulic pressure, when the oil liquid flowing out reaches a certain amount, the tonnage spring 9 can restore to the original state and drive the central tube 7 to move upwards, at the moment, the connecting plate 11, the connecting rod 5 and the inverse ball 15 move downwards under the action of self gravity to close the pressure relief hole 31 again, thereby accomplishing the release to fluid, and then can reduce the difficult degree of oil bailing operation to reduce the emergence of accident.

Preferably, the central tube 7 is provided with an upper nut 16 and a lower nut 17, the upper nut 16 is in contact with the upper fixed seat 13, and the lower nut 17 is in contact with the lower fixed seat 6. The upper nut 16 and the lower nut 17 are convenient for disassembling and assembling the sealing leather cup 14, and simultaneously are also convenient for adjusting the tightness degree of the sealing leather cup 14, and can play a role in protecting the sealing leather cup 14, so that the sealing leather cup 14 is not damaged.

Preferably, the lower part of the oil inlet barrel 2 is also connected with a balancing weight 1, and the weight of the oil bailing swab can be increased through the balancing weight 1, so that the oil bailing swab can more easily go down to a specified position.

Preferably, the top surface of the sliding cylinder 8 is further provided with a stretcher disc 12, the stretcher disc 12 is provided with a connecting hole 121, a steel wire can pass through the connecting hole 121 and is fixed on the stretcher disc 12, the stretcher disc 12 is based on a bearing, so that the steel wire is connected with the stretcher disc 12, the steel wire drives the stretcher disc 12 to rotate when rotating, but the oil bailer cannot rotate, so that the steel wire cannot be wound together.

The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. Overweight self-discharging formula oil bailing swab, including center tube (7), install sealed leather cup (14), its characterized in that on center tube (7): the lower part of the central tube (7) is connected with an oil inlet tube (2), and the upper end of the central tube (7) is connected with a spring pressing plate (10); the spring pressing plate (10) can slide in the sliding cylinder (8), a plurality of oil outlet holes (81) are formed in the sliding cylinder (8), a tonnage spring (9) positioned between the spring pressing plate (10) and the sliding cylinder (8) is sleeved on the central tube (7), a plurality of through holes (101) are formed in the spring pressure plate (10), inverted ball seats (3) are sequentially arranged in the oil inlet cylinder (2) from bottom to top, the middle part of the inverse tee (3) is provided with a pressure relief hole (31), the upper part of the inverse tee (3) is also provided with a pressure relief tee (4) which can move up and down in the oil inlet cylinder (2), a reverse ball (15) capable of sealing the pressure relief hole (31) is arranged on the pressure relief ball seat (4), and a connecting mechanism which penetrates through the through hole (101) and is connected with the sliding cylinder (8) is arranged on the top surface of the pressure relief ball seat (4).

2. The overweight self-unloading oil scoop according to claim 1, wherein: the connecting mechanism comprises a connecting rod (5) which is arranged on the top surface of the inverted ball seat (3) and penetrates through the through hole (101), the upper end of the connecting rod (5) is connected with a connecting plate (11), and the connecting plate (11) is connected with the inner wall of the sliding cylinder (8).

3. The overweight self-unloading oil scoop according to claim 1, wherein: the central tube (7) is provided with an upper fixed seat (13) and a lower fixed seat (6) which are positioned on the top surface and the bottom surface of the sealing packing cup (14) respectively, and the central tube (7) is provided with a closed hole (71) communicated with the inside of the sealing packing cup (14).

4. The overweight self-unloading oil scoop according to claim 3, wherein: an upper nut (16) and a lower nut (17) are mounted on the central tube (7), the upper nut (16) is in contact with the upper fixing seat (13), and the lower nut (17) is in contact with the lower fixing seat (6).

5. The overweight self-unloading oil scoop according to claim 1, wherein: the lower part of the oil inlet cylinder (2) is also connected with a balancing weight (1).

6. The overweight self-unloading oil scoop according to claim 1, wherein: the top surface of the sliding cylinder (8) is also provided with a stretcher disc (12), and the stretcher disc (12) is provided with a connecting hole (121).