CN210768637U

CN210768637U - Safety joint for drilling

Info

Publication number: CN210768637U
Application number: CN201921616866.XU
Authority: CN
Inventors: 李硕
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-26
Filing date: 2019-09-26
Publication date: 2020-06-16
Anticipated expiration: 2029-09-26

Abstract

The utility model discloses a well drilling safety joint, the power tool comprises a parent, the cover is equipped with public head on the matrix, connect channel has all been seted up in matrix and the public head, and two connect channel connect, slidable mounting has the tripping pipe in the internal connect channel of matrix, install a plurality of tripping device on tripping pipe and the matrix jointly. The utility model discloses a plurality of lockpins radially insert establish fixed parent and public head, increase the steadiness of locking, coaxial rotation through telescopic link and lever realizes that the lockpin breaks away from public first unblock, cuts the pin through the trip pipe and promotes the lever through trigger spring and trigger bar and trigger the lockpin and thread off, easy operation and thread off rapidly.

Description

Safety joint for drilling

Technical Field

The utility model relates to a drilling machinery especially relates to a well drilling safety joint.

Background

The safety joint is an easy-to-trip safety tool connected to a pipe column in a well, is installed at a position where the pipe column needs to be disconnected, can transmit torque together with the pipe column and bear various composite stresses, and completes tripping of the pipe column through well mouth operation when a fault occurs in the well, so that a guarantee is provided for preventing underground accidents.

The existing safety joint generally locks a parent body and a male head through an arc-shaped clamping block, and is fixed through a shearing pin and an inner pipe sleeve, when a fault occurs, the inner pipe sleeve is blocked and liquid is introduced for pressurization through putting in a steel ball, the liquid pushes the steel ball and the inner pipe sleeve to shear the shearing pin so that the inner pipe sleeve is separated from the parent body and the male head, and then the parent body and the male head slide along the surface of the arc-shaped clamping block under the action of gravity through upward and downward movement, but the scheme needs to pull a pipeline for many times to shake the parent body and the male head to fall off when the hook is tripped, the tripping time and the tripping difficulty are increased, and the arc-shaped clamping block can be blocked by sundries.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a drilling safety joint.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a well drilling safety joint, includes the parent, the cover is equipped with public head on the parent, the connector has been seted up to the upper end of public head, connect the passageway has all been seted up in parent and the public head, and two connect the passageway are connected, slidable mounting has the trip pipe in the internal connect the passageway of parent, install a plurality of tripping device on trip pipe and the parent jointly.

Preferably, the tripping mechanism comprises a lock pin which is slidably inserted on the side wall of the parent body, one end of the lock pin, which is far away from the parent body, extends and is inserted in the male head, a pin is fixedly installed at one end of the lock pin, which is close to the connecting channel, and the pin is embedded in the side wall of the tripping pipe;

under normal conditions, the lockpin pins the tripping pipe through the pin, and the lockpin is through inserting and establishing the locking between parent and public head for parent and public head fixed connection, when needing the dropout, drop into the steel ball that the diameter is greater than the minimum internal diameter of tripping pipe, make the tripping pipe cut off lockpin and pin under the effect of pressure after the pressurization slip casting, make the tripping pipe move down in the connecting channel, then the tripping pipe can't block the lockpin.

Preferably, a plurality of movable cavities are formed in the parent body, a telescopic rod and a lever are coaxially and rotatably mounted in each movable cavity, the telescopic rod and the lever in each movable cavity are mutually fixed, and the telescopic ends of the telescopic rods are respectively rotatably mounted at the lower ends of the lock pins;

when the lever rotates, the telescopic rod rotates coaxially and in the same direction, the telescopic rod rotates to push the lock pin to slide in the connecting channel, the lever is controlled to rotate, and the lock pin can exit from the male head, so that the male head and the female body are unlocked.

Preferably, a trigger hole is formed in the inner side wall of each movable cavity and is located on the side of the lever.

Preferably, the side wall of the tripping pipe is annularly and symmetrically provided with a plurality of trigger grooves, the bottom of each trigger groove is fixedly provided with a trigger spring, a trigger rod is slidably arranged in each trigger groove, and one end of each trigger rod is connected with the trigger spring;

when the tripping pipe slides downwards, the triggering rod is abutted to the inner wall of the connecting channel, the triggering spring cannot push the triggering rod, when the triggering rod is flush with the triggering hole, the triggering spring pushes the triggering rod to be inserted into the triggering hole in a sliding mode, the tripping pipe is blocked to stop moving downwards, the triggering rod is continuously pushed into the movable cavity by the triggering spring to push the lever to drive the telescopic rod to rotate, and then the lock pin is pushed out to complete unlocking.

Preferably, the connector is installed to the lower extreme of parent, spacing passageway has been seted up jointly to the latter half of parent and connector, and the diameter of spacing passageway is less than interface channel's diameter.

The utility model discloses following beneficial effect has:

1. the plurality of lock pins are inserted at the connecting part of the parent body and the male head to lock the parent body and the male head, so that the required vertical pulling force and the rotary shearing force can be realized during normal work, and the plurality of lock pins which are uniformly distributed in an annular shape are inserted and fixed more uniformly and stably.

2. The telescopic link and the lever rotate coaxially, and telescopic link and lever reciprocal anchorage, then the lever can drive the telescopic link and rotate around the axle, and the telescopic link rotates and is making flexible end drive the lockpin slide to the interface channel, can make the lockpin insert the one end of establishing in public head promptly and keep away from public head unblock, and public head and matrix direct separation after the unblock, can not lead to the dropout to block the complex condition emergence such as.

3. The pin can be sheared through the pressure to the tripping pipe, the pin cannot be blocked from moving after being sheared, the trigger rod on the side wall of the tripping pipe penetrates through the trigger hole through the trigger spring to push the lever to rotate to trigger tripping operation, the tripping structure is simple and durable, and tripping is rapid.

To sum up, the utility model discloses a plurality of lockpins radially insert establish fixed parent and public head, increase the steadiness of locking, coaxial rotation through telescopic link and lever realizes that the lockpin breaks away from public first unblock, cuts the pin through the dropout pipe and promotes the lever through trigger spring and trigger bar and trigger the lockpin dropout, and easy operation and dropout are rapid.

Drawings

Fig. 1 is a schematic structural diagram of a drilling safety joint according to the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a tripping schematic diagram of a drilling safety joint according to the present invention.

In the figure: the device comprises a matrix 1, a male connector 2, a connector 3, a connecting channel 4, a connector 5, a limiting channel 6, a tripping pipe 7, a triggering spring 8, a triggering rod 9, a pin 10, a locking pin 11, a telescopic rod 12, a movable cavity 13, a lever 14 and a triggering hole 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, a well drilling safety joint, includes matrix 1, and the cover is equipped with public head 2 on matrix 1, and connector 3 has been seted up to public head 2's upper end, has all seted up interface channel 4 in matrix 1 and the public head 2, and two interface channel 4 connect, and slidable mounting has tripping pipe 7 in the interface channel 4 in matrix 1, installs a plurality of tripping device on tripping pipe 7 and the matrix 1 jointly.

The tripping mechanism comprises a lock pin 11 which is slidably inserted on the side wall of the parent body 1, one end of the lock pin 11, which is far away from the parent body 1, extends and is inserted in the male head 2, one end of the lock pin 11, which is close to the connecting channel 4, is fixedly provided with a pin 10, and the pin 10 is embedded in the side wall of the tripping pipe 7;

under the normal condition, lockpin 11 pins release pipe 7 through pin 10, and lockpin 11 is through inserting and establish between mother 1 and public head 2 locking for mother 1 and public head 2 fixed connection, when needs are tripped, drop into the steel ball that the diameter is greater than release pipe 7 minimum internal diameter, make release pipe 7 cut off lockpin 11 and pin 10 under the effect of pressure after the pressurization slip casting, make release pipe 7 move down in connecting channel 4, then release pipe 7 can't block lockpin 11.

A plurality of movable cavities 13 are formed in the parent body 1, a telescopic rod 12 and a lever 14 are coaxially and rotatably mounted in each movable cavity 13, the telescopic rod 12 and the lever 14 in each movable cavity 13 are mutually fixed, and the telescopic ends of the telescopic rods 12 are respectively rotatably mounted at the lower ends of the lock pins 11;

when the lever 14 rotates, the telescopic rod 12 rotates coaxially and in the same direction, the telescopic rod 12 rotates to push the lock pin 11 to slide in the connecting channel 4, namely the lever 14 is controlled to rotate, so that the lock pin 11 can exit from the male head 2, and the male head 2 and the parent body 1 are unlocked.

The inner side wall of each movable cavity 13 is provided with a trigger hole 15, and the trigger holes are positioned on the side of the lever 14.

A plurality of trigger grooves are annularly and symmetrically formed in the side wall of the tripping pipe 7, a trigger spring 8 is fixedly mounted at the bottom of each trigger groove, a trigger rod 9 is slidably mounted in each trigger groove, and one end of each trigger rod 9 is connected with the trigger spring 8;

when the tripping pipe 7 slides downwards, the triggering rod 9 abuts against the inner wall of the connecting channel 4, the triggering spring 8 cannot push the triggering rod 9, when the triggering rod 9 is flush with the triggering hole 15, the triggering spring 8 pushes the triggering rod 9 to be inserted into the triggering hole 15 in a sliding mode, the tripping pipe 7 is blocked to stop moving downwards, the triggering rod 9 is continuously pushed into the movable cavity 13 by the triggering spring 8 to push the lever 14 to drive the telescopic rod 12 to rotate, and then the lock pin 11 is pushed out to complete unlocking.

Connector 5 is installed to the lower extreme of parent 1, and spacing passageway 6 has been seted up jointly to the latter half of parent 1 and connector 5, and the diameter of spacing passageway 6 is less than the diameter of interface channel 4.

When the utility model is used, when the tripping is needed in case of a fault, a steel ball with a diameter larger than the minimum diameter of the tripping pipe 7 is thrown in from the connecting port 3, the steel ball blocks the tripping pipe 7 when falling onto the tripping pipe 7, the connecting channel 4 and the limiting channel 6 are blocked, then liquid is injected into the connecting port 3 to be pressed, then the pressure pushes the steel ball and the tripping pipe 7 to act downwards, the pressure reaches a certain degree to cut off the plurality of pins 10, the tripping pipe 7 moves downwards, when the tripping pipe 7 moves downwards and is blocked by the limiting channel 6, the triggering rod 9 is just opposite to the triggering hole 15, the triggering rod 9 is ejected into the triggering hole 15 under the action of the triggering spring 8 and slides into the movable cavity 13 along the triggering hole 15 to push the lever 14 to rotate around the shaft, then the telescopic rod 12 rotates around the shaft in the same direction, the telescopic end of the telescopic rod 12 pushes the lock pin 11 to slide in the connecting channel 4, namely, the lock pin 11 is far away from the male head, and the male head 2 and the parent body 1 are tripped to complete the tripping operation.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a well drilling safety joint, includes parent (1), its characterized in that, the cover is equipped with public head (2) on parent (1), connect channel (4) have all been seted up in parent (1) and public head (2), and two connect channel (4) are connected, slidable mounting has trip pipe (7) in connect channel (4) in parent (1), install a plurality of tripping device on trip pipe (7) and parent (1) jointly.

2. A drilling safety joint according to claim 1, characterized in that the tripping mechanism comprises a lock pin (11) slidably inserted on the side wall of the parent body (1), a pin (10) is fixedly mounted at one end of the lock pin (11) close to the connecting channel (4), and the pin (10) is embedded in the side wall of the tripping pipe (7).

3. A safety joint for drilling according to claim 2, wherein a plurality of movable cavities (13) are formed in the parent body (1), each movable cavity (13) is coaxially and rotatably provided with a telescopic rod (12) and a lever (14), the telescopic rod (12) and the lever (14) in each movable cavity (13) are fixed with each other, and the telescopic ends of the telescopic rods (12) are respectively rotatably arranged at the lower ends of the lock pins (11).

4. A drilling safety joint according to claim 3, wherein each of the movable chambers (13) has an actuation hole (15) formed in its inner side wall.

5. The drilling safety joint as claimed in claim 1, wherein the side wall of the trip pipe (7) is annularly and symmetrically provided with a plurality of trigger grooves, the bottom of each trigger groove is fixedly provided with a trigger spring (8), a trigger rod (9) is slidably arranged in each trigger groove, and one end of the trigger rod (9) is connected with the trigger spring (8).

6. A drilling safety joint according to claim 1, characterized in that the connector (5) is mounted at the lower end of the parent body (1), the lower half of the parent body (1) and the connector (5) jointly open a limiting channel (6), and the diameter of the limiting channel (6) is smaller than that of the connecting channel (4).