CN215907814U - Oil pipe blanking plug for oil and gas well - Google Patents

Abstract

The utility model discloses an oil pipe blanking plug for an oil and gas well, which comprises an upper core rod, wherein a fishing head is arranged at the upper part of the upper core rod, an installation sleeve is arranged at the lower part of the upper core rod, the bottom of the upper core rod is connected with a lower blanking plug, a lower core body is clamped on the installation sleeve, an upper support body is arranged at the lower part of the fishing head and the upper part of the lower core body, a locking ring which is clamped and matched with the lower core body is arranged on the upper support body, a setting mechanism and a rubber sleeve limiting block are sequentially arranged on the lower core body below the upper support body, the bottom of the rubber sleeve limiting block is connected with a blanking mounting frame, and the lower blanking plug is sleeved in the blanking mounting frame. The utility model is convenient to be taken out, can effectively improve the construction efficiency and saves the construction working hours and the waste of manpower.

Description

Oil pipe blanking plug for oil and gas well

Technical Field

The utility model belongs to the technical field of oil and gas well exploitation, and particularly relates to an oil pipe plug for an oil and gas well.

Background

When the oil gas well carries out the well head construction operation, in order to keep the bottom energy, alleviate environmental pollution, adopt the area to press the mode to carry out the operation usually, in order to avoid the profit in the oil gas well to reveal ground, cause environmental pollution, need adopt the oil pipe blanking plug to carry out the shutoff to the oil pipe in the oil gas well, treat that the well head operation finishes the back and remove the shaft bottom oil pipe shutoff again. At present, the oil pipe plug used in the prior art can better solve the problem of blocking in an oil pipe. However, the plugging operation is not reversible, and the tubing plug cannot be taken out after being lowered into the tubing, and if the tubing plug is taken out, the tubing plug must be completely taken out from the well and then disassembled, which not only affects the efficiency of construction, but also causes unnecessary waste of labor hour and labor.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, and provide the oil pipe blanking plug for the oil-gas well, which is convenient to lift, can effectively improve the construction efficiency, and saves the construction working hours and the waste of manpower.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides an oil gas well oil pipe blanking plug, includes the upper core bar, the upper portion of upper core bar is equipped with salvages the head, the lower part of upper core bar is equipped with the installation cover, the bottom of upper core bar is connected with down and blocks up, the core body has clamped on the installation cover, the lower part of salvage the head and the upper portion of core body are equipped with the upper bracket body down, be equipped with on the upper bracket body with core body joint complex catch down, it is equipped with seat sealing mechanism and gum cover stopper in proper order to lie in the upper bracket body below on the core body down, gum cover stopper bottom is connected with and blocks up the mounting bracket, block up down and embolia in the jam mounting bracket.

Preferably, the top end of the upper core rod is provided with an upper joint for connecting a winch steel wire rope.

Preferably, a clamping groove is formed in the mounting sleeve, and a spring used for popping out the lower core body is arranged in the clamping groove.

Preferably, the upper bracket body is connected with the fishing head through a first shear pin.

Preferably, a blind hole is formed in one end, connected with the upper core rod, of the lower plug, an upper core rod shearing pin shaft is arranged on the side wall of the lower portion of the blind hole, the upper core rod shearing pin shaft penetrates through the blind hole and the upper core rod simultaneously, and the plug mounting frame is connected with the other end of the lower plug through a second shear pin.

Preferably, the setting mechanism comprises slips and a slip guide seat arranged at the bottom of the slips and matched with the slips in a sliding manner, a sealing rubber barrel is arranged below the slip guide seat, and a rubber sleeve limiting block is arranged below the sealing rubber barrel.

Preferably, the inner side of the sealant barrel is provided with a semicircular arc groove which is convenient for deformation when the sealant barrel is extruded.

The utility model has the technical effects and advantages that:

according to the oil pipe blanking plug for the oil gas well, the upper connector can be connected with the steel wire rope on the winch, the steel wire rope of the winch is used for throwing the blanking plug, the working efficiency can be effectively improved, the fishing head is connected with the upper support body and the lower core body, when the blanking plug is fished, the upper support body and the lower core body are driven to move upwards by lifting the fishing head, the slips and the sealing rubber barrel are relieved from the setting state, the blanking plug can be fished conveniently, and the construction working hours and the labor waste are effectively saved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

Fig. 1 is a schematic structural view of the tubing plug of the oil and gas well of the present invention.

Reference numbers in the figures: 1. an upper core rod; 2. fishing the head; 3. lower blocking; 4. installing a sleeve; 5. an upper bracket body; 6. a slip guide seat; 7. slips; 8. sealing the rubber barrel; 9. a rubber sleeve limiting block; 10. blocking the mounting rack; 11. an upper joint; 12. a second shear pin; 13. blind holes; 14. shearing the pin shaft by the upper core rod; 15. a lower core body; 16. a locking ring; 17. a first shear pin.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1, the oil pipe plug for the oil and gas well comprises an upper core rod 1, wherein an upper joint 11 used for being connected with a winch steel wire rope is arranged at the top end of the upper core rod 1, a fishing head 2 is arranged at the upper part of the upper core rod 1, an installation sleeve 4 is arranged at the lower part of the upper core rod 1, and a lower plug 3 is connected to the bottom of the upper core rod 1.

Referring to fig. 1, the lower portion of the upper core rod 1 is provided with a mounting sleeve 4, the mounting sleeve 4 is provided with a clamping groove, a spring is arranged in the clamping groove, the lower core body 15 is clamped in the clamping groove of the mounting sleeve 4 and connected with the spring, and when the lower core body 15 is acted by gravity, the spring ejects the lower core body 15 from the clamping groove.

Referring to fig. 1, an upper bracket body 5 is arranged at the lower part of the fishing head 2 and the upper part of the lower core body 15, the upper bracket body 5 is connected with the fishing head 2 through a first shear pin 17, a locking ring 16 in clamping fit with the lower core body 15 is arranged on the upper bracket body 5, and the lower core body 15 is in clamping fit with the locking ring 16 after being popped out from the locking groove.

Referring to fig. 1, a setting mechanism and a rubber sleeve limiting block 9 are sequentially arranged below the upper support body 5 on the lower core body 15, the setting mechanism comprises a slip 7 and a slip guide seat 6 arranged at the bottom of the slip 7 and matched with the slip, a sealing rubber barrel 8 is arranged below the slip guide seat 6, and the rubber sleeve limiting block 9 is arranged below the sealing rubber barrel 8. The bottom of the rubber sleeve limiting block 9 is connected with a plug mounting frame 10, and the lower plug 3 is sleeved into the plug mounting frame 10.

Preferably, the inner side of the sealant barrel 8 is provided with a semicircular groove which is convenient for deformation when the sealant barrel is extruded.

Referring to fig. 1, a blind hole 13 is formed at one end of the lower plug 3 connected with the upper core rod 1, an upper core rod shearing pin 14 is arranged on the side wall of the lower part of the blind hole 13, the upper core rod shearing pin 14 penetrates through the blind hole 13 and the upper core rod 1 at the same time, and the plug mounting frame 10 passes through a second shearing nail 12 and the other end of the lower plug 3

The working principle of the oil pipe blanking plug of the oil-gas well provided by the utility model is as follows:

when an oil pipe needs to be blocked, a winch is adopted to put the oil pipe in a steel wire rope putting mode, the steel wire rope is connected to an upper connector 11, the winch is controlled to lift a blanking plug and put the blanking plug into an oil well at a uniform speed, when the blanking plug is put to a position 50-100 m away from a specified putting distance, the putting speed is accelerated, when the blanking plug reaches a specified putting position, the steel wire rope is lifted, at the moment, a lower core body 15 pops out of a clamping groove under the action of gravity and is clamped in a locking ring 16 of a downward-moving upper support body 5, under the action of gravity and the downward pressure of the upper support body 5, a slip 7 and an upper core rod 1 generate relative motion, the slip 7 slides along an inclined plane of a slip guide seat 6 and gradually opens and is hung on the wall of the oil pipe, meanwhile, the sealing rubber barrel 8 is squeezed under the action of gravity, so that the sealing rubber barrel 8 deforms to form sealing with the oil pipe, the upper core rod 1 is lifted under the action of increased force, under the action of gravity, the upper core rod shearing pin 14 is sheared, the upper core rod 1 is taken out, and setting is completed.

When the blanking plug is salvaged to needs, utilize the winch system, it puts into the oil pipe to hoist fishing tool, make fishing tool will salvage first 2 fixed joints, lift fishing head 2, under the effect of gravity, fishing head 2 drives upper bracket body 5 rebound, upper bracket body 5 drives core 15 and moves up down, core 15 drives slips 7 and sealed gluey bucket 8 and shifts up down, the setting state that causes slips 7 and sealed gluey bucket 8 is relieved, wire rope through the winch takes out the blanking plug, salvage and accomplish.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (7)

1. The utility model provides an oil gas well tubing plug, includes core bar (1), its characterized in that: the upper portion of going up core bar (1) is equipped with salvage head (2), the lower part of going up core bar (1) is equipped with installation cover (4), the bottom of going up core bar (1) is connected with down and blocks up (3), install and clamp down core (15) on cover (4), the lower part of salvaging head (2) and the upper portion of core (15) down are equipped with upper bracket body (5), be equipped with on upper bracket body (5) with core (15) joint complex catch (16) down, lie in the upper bracket body (5) below on core (15) down and be equipped with seat seal mechanism and gum cover stopper (9) in proper order, gum cover stopper (9) bottom is connected with and blocks up mounting bracket (10), it embolias in blocking up mounting bracket (10) to block up (3) down.

2. An oil and gas well tubing plug as claimed in claim 1, wherein: and an upper joint (11) used for connecting a winch steel wire rope is arranged at the top end of the upper core rod (1).

3. An oil and gas well tubing plug as claimed in claim 1, wherein: a clamping groove is formed in the mounting sleeve (4), and a spring used for popping out the lower core body (15) is arranged in the clamping groove.

4. An oil and gas well tubing plug as claimed in claim 1, wherein: the upper bracket body (5) is connected with the fishing head (2) through a first shear pin (17).

5. An oil and gas well tubing plug as claimed in claim 4, wherein: the lower plug (3) is connected with one end of the upper core rod (1) through a blind hole (13), an upper core rod shearing pin shaft (14) is arranged on the side wall of the lower portion of the blind hole (13), the upper core rod shearing pin shaft (14) penetrates through the blind hole (13) and the upper core rod (1) simultaneously, and the plug mounting frame (10) is connected with the other end of the lower plug (3) through a second shearing nail (12).

6. An oil and gas well tubing plug as claimed in claim 1, wherein: the setting mechanism comprises a slip (7) and a slip guide seat (6) which is arranged at the bottom of the slip (7) and matched with the slip, a sealing rubber barrel (8) is arranged below the slip guide seat (6), and a rubber sleeve limiting block (9) is arranged below the sealing rubber barrel (8).

7. An oil and gas well tubing plug as claimed in claim 6, wherein: the inner side of the sealant barrel (8) is provided with a semicircular arc groove which is convenient for deformation when the sealant barrel is extruded.

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