CN210068128U - Well testing anti-falling device - Google Patents

Abstract

The utility model relates to a well testing anti-drop device, which comprises an anti-drop device main body, an upper joint and a lower joint, wherein the upper joint and the lower joint are connected with the two ends of the main body; the main body is a hollow tubular shell, a turnover cover plate used for plugging the lower joint is arranged in the main body, and the turnover cover plate is connected with a wrench arranged outside the main body through a transmission shaft. The utility model provides a well testing anti-falling device can be installed on oil well production tree, through the opening and closing of upset apron, makes the logging instrument can normally log a well, prevents simultaneously that the thing of well head from falling into in the pit, or the operation carelessly and the well testing car winch degree of depth show the trouble make the instrument lift in-process collision lubricator top lead to the well testing steel wire or cable break off and fall into in the pit, do benefit to the safety in production; the utility model discloses have the liquid of emptying devices in order the evacuation lubricator, convenient dismantlement, the transport of being convenient for, safe and reliable.

Description

Well testing anti-falling device

Technical Field

The utility model relates to a seal logging technical field particularly, for a can adorn the ware of preventing falling in well testing on oil well production tree.

Background

The oil well needs to obtain various underground physical parameters by putting different logging instruments into the well, so that a correct production strategy is determined, and logging can be carried out under a closed condition to obtain underground data which is closer to actual data. The instrument falling into the well needs to be salvaged, but the salvage work is very complex, and some instruments can be salvaged after being salvaged for many times, so that the underground operation time is prolonged; in the process of lifting out of a wellhead after some well logging, due to careless operation, well logging instruments or other objects can fall into the underground.

At present, no matter what method is adopted for logging, because the underground is an open port before the well is lowered and in the process of being lifted out, a closing device is not arranged, and the reason why a logging instrument or other objects fall into the underground is also caused.

In view of this, the present invention is especially provided.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides a can adorn the well testing alarm on oil well production tree, prevents that the instrument from lifting the in-process and falling into in the pit.

In order to solve the technical problem, the utility model adopts the following basic concept:

a well testing anti-drop device comprises an anti-drop device main body, an upper joint and a lower joint, wherein the upper joint and the lower joint are connected to two ends of the main body; the main body is a hollow tubular shell, a turnover cover plate used for plugging the lower joint is arranged in the main body, and the turnover cover plate is connected with a wrench arranged outside the main body through a transmission shaft.

Furthermore, in the above-mentioned well testing anti-falling device, still include the torsional spring, the transmission shaft outer end stretch out in the inboard lateral wall of main part and pass torsional spring connection spanner, the one end of torsional spring is connected on the inboard lateral wall of main part and the other end is connected the spanner.

Further, in the well testing anti-falling device, the overturning cover plate is provided with a concave groove.

Furthermore, in the well testing anti-falling device, one end of the turnover cover plate is provided with a square hole support lug, and the transmission shaft is at least provided with a section of square shaft section matched with the square hole support lug; the side wall of the outer side of the main body is provided with a first sealing sleeve penetrating through the wall thickness; be equipped with the copper gasket in the first seal cover, upset apron journal stirrup with the journal stirrup pore pair of lower clutch, the transmission shaft runs through the inboard lateral wall of main part and upset apron journal stirrup pore and in the journal stirrup pore to the first seal cover of lower clutch, the transmission shaft is inner to support on this copper gasket.

Furthermore, in the well testing anti-falling device, the part of the transmission shaft, which is positioned in the main body, is also sequentially sleeved with a copper sleeve and a second sealing sleeve.

Further, in the above well testing anti-falling device, an emptying device is arranged on one side of the main body.

Furthermore, in the above-mentioned well testing anti-drop device, the emptying device includes two adapters, a hydraulic quick coupling is installed between the two adapters, wherein the adapter far away from the main body is connected with a stop needle valve and an elbow.

Furthermore, in the above well testing anti-falling device, two sides of the inner side wall of the main body are respectively provided with a baffle.

Furthermore, in the well testing anti-falling device, a hand-held rod is arranged between the two baffles.

Furthermore, in the well testing anti-falling device, the sleeve is sleeved on the hand-lifting rod.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:

the utility model provides a well testing anti-falling device can be installed on oil well production tree, through the opening and closing of upset apron, makes the logging instrument can normally log a well, prevents simultaneously that the thing of well head from falling into in the pit, or the operation carelessly and the well testing car winch degree of depth show the trouble make the instrument lift in-process collision lubricator top lead to the well testing steel wire or cable break off and fall into in the pit, do benefit to the safety in production; the utility model discloses have the liquid of emptying devices in order the evacuation lubricator, convenient dismantlement, the transport of being convenient for, safe and reliable.

Drawings

FIG. 1 is a partial cross-sectional view of the well testing drop preventer of the present invention;

FIG. 2 is a schematic view of the A-A direction structure of the well testing drop preventer shown in FIG. 1;

FIG. 3 is a schematic view of the wrench of FIG. 2 (P direction);

FIG. 4 is a schematic view of the appearance structure of the well testing anti-drop device of the present invention;

in the figure:

1. an upper joint; 2. a seal ring; 3. a main body; 4. turning over the cover plate; 5. a lower joint; 6. a seal ring; 7. a seal ring retainer ring; 8. a set screw is fastened at the inner hexagonal cone end; 9. a flat bond; 10. a first seal cartridge; 11. a seal ring; 12. a seal ring retainer ring; 13. a copper gasket; 14. a seal ring; 15. a seal ring retainer ring; 16. a copper sleeve; 17. a drive shaft; 18. a second seal cartridge; 19. a torsion spring; 20. slotted pan head screws; 21. a large gasket; 22. a socket head cap screw; 23. a spring washer; 24. a baffle plate; 25. a hydraulic quick coupling; 26. a hand-held lever; 27. a cap nut; 28. a sleeve; 29; a crossover sub; 30. stopping the needle valve; 31. bending the pipe; 32. a wrench; 33. union; 34. a concave groove.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments to assist understanding of the invention.

As shown in fig. 1-4, a well testing drop preventer comprises a drop preventer body 3, and an upper joint 1 and a lower joint 2 connected to both ends of the body 3; the main body 3 is a hollow tubular shell, the main body 3 is internally provided with a turnover cover plate 4 for plugging a lower joint, and the turnover cover plate 4 is connected with a wrench 32 arranged outside the main body 3 through a transmission shaft 17; when the well is lowered, the wrench 32 is manually pulled to control the turnover cover plate 4 to turn over by 90 degrees, and a channel between the main body 3 and the lower joint 5 is opened.

Specifically, one end of the turnover cover plate 4 is provided with a square hole support lug, and correspondingly, the transmission shaft 17 is at least provided with a square shaft section matched with the square hole support lug for transmission; a first sealing sleeve 10 penetrating through the wall thickness is arranged on the side wall of the outer side of the main body 3, and a sealing ring 11 and a sealing ring retainer ring 12 are arranged between the first sealing sleeve 10 and the main body 3 for enhancing sealing; a copper gasket 13, a sealing ring 14 and a sealing ring retainer ring 15 are arranged in the first sealing sleeve 10; 4 journal stirrup holes of upset apron with the journal stirrup hole alignment of lower clutch 5, transmission shaft 17 run through the inboard lateral wall of main part 3 and 4 journal stirrup holes of upset apron and in the journal stirrup hole to first seal cover 10 of lower clutch 5, transmission shaft 17 is inner to support on this copper gasket 13, then will overturn and cover 4 to fix in main part 3. The part of the transmission shaft 17 positioned in the main body 3 is also sequentially sleeved with a copper sleeve 16 and a second sealing sleeve 18.

The outer end of the transmission shaft 17 extends out of the inner side wall of the main body 3 and is connected with a wrench 32 through a large washer 21 and a slotted pan head screw 20, one end of a torsion spring 19 is connected to the inner side wall of the main body 3, and the other end of the torsion spring is connected with the wrench 32, so that after the wrench 32 is manually pulled to rotate, the torsion spring 19 can automatically reset under the action of the torsion spring 19.

As a further improvement, the flip cover plate 4 is provided with a concave groove 34 penetrating through the plate body and allowing a test wire or a cable to pass through, so that when the flip cover plate 4 blocks the inlet end of the lower joint 5, the downhole operation is not affected, and the safety production is facilitated.

In one embodiment of the present invention, the lower joint 5 is screwed with the main body 3 through the union 33, and is sealed by the seal ring 6 and the seal ring retainer ring 7, the lower joint 5 is fixed with the main body 3 by the flat key 9, and the union 33 and the main body 3 are provided with the M8 fastening screw hole and the hexagon socket head cap end fastening screw 8. The upper joint 1 is connected with the main body 3 through threads, and is provided with a sealing ring 2 for sealing.

In considering the logging instrument data in-process under the logging have liquid to get into the blowout preventer, inconvenient dismantlement, the utility model discloses there is the liquid of emptying device in order the evacuation blowout preventer in one side of main part 3: the hydraulic quick connector comprises two conversion joints 29, a hydraulic quick connector 25 is arranged between the two conversion joints 29, and a stop needle valve 30 and an elbow 31 are connected to the conversion joint 29 on the outer side. In the embodiment, the two conversion joints 29 are connected through the hydraulic quick joint 25, so that the stop needle valve 30 and the elbow 31 can be conveniently and quickly detached during carrying, the stop needle valve 30 and the elbow 31 can be quickly installed during use, and the disassembly and assembly efficiency is high.

Further, to prevent the adaptor 29 and the hydraulic quick connector 25 from being collided with each other during the transportation, a stopper 24 is provided on each of both sides of the inner side wall of the body 3 and is tightened with the socket head cap screw 22. In order to facilitate carrying, a hand-held rod 28 is arranged between the two baffle plates 24, and the hand-held rod 28 penetrates through the outer ends of the baffle plates 24 and is screwed through a cap-shaped nut 27; the sleeve 26 is sleeved on the hand-held rod 28, so that the hand-held rod is convenient to hold.

The upper joint 1 of the well testing anti-falling device is connected with the blowout prevention pipe, and the lower joint 5 is used for being connected to the Christmas tree; in the working process: before the logging instrument goes into the well, the turnover cover plate 4 is in a normally closed state and is blocked at the inlet end of the lower joint 5. When the logging instrument is lowered, the wrench 32 is manually pulled, so that the turnover cover plate 4 rotates by 90 degrees to open the channel, and the logging instrument passes through the channel; after the instrument is placed downwards, the turnover cover plate 4 automatically resets under the action of the torsion spring 19 and is blocked at the inlet end of the lower joint 5; in the well logging process, the cable and the well testing steel wire can pass through the concave groove on the turnover cover plate 4, so that the operation is not influenced, and other objects are prevented from falling from a well mouth in the well descending operation process; when the instrument is lifted up and taken out, the instrument jacks the turnover cover plate 4 to enter the blowout preventer when passing through the well testing anti-drop device, the turnover cover plate 4 of the well testing anti-drop device automatically returns to block an inner hole channel formed by the main body 3 and the lower connector 5, and the problems of careless operation, failure display of the depth of a winch of a well testing vehicle and the like are prevented, so that the top end of the blowout preventer is collided in the lifting process of the instrument to cause the well testing steel wire or cable to break off and fall into the underground.

The utility model discloses consider that the logging instrument has liquid to get into in the blowout preventer pipe, inconvenient dismantlement in the data process in the logging well, set up prevention and control device, for preventing to collide with crossover sub 29 and hydraulic pressure quick-operation joint 25 in handling, set up baffle 24, and be equipped with portable rod 28 on, solve the problem of not good transport simultaneously.

In addition, the upper joint 1 is connected with the main body 3 through the trapezoidal threads, so that the upper joint 1 and the main body 3 are convenient to mount, and the trapezoidal threads are more wear-resistant than common triangular threads and can be mounted and dismounted for many times.

The utility model discloses the ware is prevented falling in well testing, simple structure, small, light in weight, the dismouting is convenient, easy to operate uses in being particularly useful for oil, the well seal logging technology, does benefit to production, is suitable for the popularization.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A well testing anti-drop device is characterized by comprising an anti-drop device main body, an upper joint and a lower joint, wherein the upper joint and the lower joint are connected to two ends of the main body; the main body is a hollow tubular shell, a turnover cover plate used for plugging the lower joint is arranged in the main body, and the turnover cover plate is connected with a wrench arranged outside the main body through a transmission shaft.

2. The well testing drop preventer according to claim 1, further comprising a torsion spring, wherein an outer end of the transmission shaft extends out of the inner side wall of the main body and penetrates through the torsion spring to connect the wrench, one end of the torsion spring is connected to the inner side wall of the main body, and the other end of the torsion spring is connected to the wrench.

3. The well testing drop preventer according to claim 2, wherein the flip cover plate is provided with a concave groove.

4. The well testing drop preventer according to claim 3, wherein one end of the flip cover plate is provided with a square hole support lug, and the transmission shaft is provided with at least one section of a square shaft section adapted to the square hole support lug; the side wall of the outer side of the main body is provided with a first sealing sleeve penetrating through the wall thickness; be equipped with the copper gasket in the first seal cover, upset apron journal stirrup with the journal stirrup pore pair of lower clutch, the transmission shaft runs through the inboard lateral wall of main part and upset apron journal stirrup pore and in the journal stirrup pore to the first seal cover of lower clutch, the transmission shaft is inner to be in on the copper gasket.

5. The well testing drop preventer according to claim 4, wherein the portion of the transmission shaft located in the main body is further sleeved with a copper sleeve and a second sealing sleeve in sequence.

6. The well testing drop preventer of claim 1, wherein a vent device is provided at one side of the body.

7. The well testing drop preventer according to claim 6, wherein the venting device comprises two adapters, a hydraulic quick connector is connected between the two adapters, and a stop needle valve and an elbow are connected to at least one of the adapters.

8. The well testing drop preventer of claim 7, wherein the body is provided with a baffle plate at both sides of the inner sidewall thereof.

9. The well testing fall preventer according to claim 8, wherein a hand lever is provided between the two baffles.

10. The well testing drop preventer of claim 9, wherein the hand lever is sleeved with a sleeve.

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