CN110835043A

CN110835043A - Hoisting fixture

Info

Publication number: CN110835043A
Application number: CN201810933454.2A
Authority: CN
Inventors: 孙连会; 张远弟; 李玉帮; 马彦涛; 董宝山; 李伟昂; 李希凡; 王铁峰; 杨振涛; 苏印成
Original assignee: Petrochina Co Ltd
Current assignee: Petrochina Co Ltd
Priority date: 2018-08-15
Filing date: 2018-08-15
Publication date: 2020-02-25
Anticipated expiration: 2038-08-15
Also published as: CN110835043B

Abstract

The invention discloses a hoisting fixture, and belongs to the field of petroleum engineering tool equipment. This hoisting fixture includes: disc, lifting frame, cable and bail, the disc includes: the clamping device comprises a clamping opening, a first support seat group, a second support seat group, a first support part, a second support part, a third support seat group, a fourth support seat group, a limiting pipe fitting and a limiting pin, wherein the first support seat group is connected with the first support part; the second support seat group is connected with the second support part, and the first support part and the second support part are used for supporting a lifting short section of the oil pipe internal control combination device; the third support group is connected with one end of a limiting pipe fitting, and the limiting pipe fitting is used for fixing the disc; the spacer pin is connected in the interlude of fourth support group, and the spacer pin is used for fixed limit pipe fitting, carries the frame to include: the lifting device comprises a cross frame beam, a first lifting rod and a second lifting rod, wherein a lifting ring is arranged on the cross frame beam and used for hanging a lifting clamp; the guy cable is used for enabling the first supporting portion and the second supporting portion to cancel the supporting of the lifting short section. The hoisting fixture is used for transporting the in-place oil pipe internal control combination device, so that the working efficiency is improved.

Description

Hoisting fixture

Technical Field

The invention relates to the field of petroleum engineering tool equipment, in particular to a hoisting clamp.

Background

In the process of oil production, when underground operation such as lifting and lowering of an oil pipe is carried out, when the phenomenon of annular overflow of the oil pipe or an oil pipe casing pipe occurs, namely the phenomenon is judged to be a blowout precursor, and at the moment, an oil pipe internal control combination device is needed to assist well control. The oil pipe internal control combination device comprises the following basic components in sequence from bottom to top: the double-male short section is used for connecting an oil pipe coupling in a well, the oil pipe hanger is used for entering a four-way tapered cavity of an oil pipe head of a wellhead so as to control an annular space of an oil pipe sleeve, the movement of the double-male short section can be controlled by controlling the movement of the lifting short section, and the flow control valve is used for controlling the inner cavity of the oil pipe. Generally, a hoisting fixture is used to complete the movement of the internal control combination device of the oil pipe into position.

In the related technology, after the oil pipe internal control combination device is placed at a wellhead, two constructors are required to lift the hoisting fixture to an operation platform and clamp the hoisting fixture on the hoisting short section of the oil pipe internal control combination device, then the constructors connect the hoisting fixture with the hook of the mechanical equipment and operate the mechanical equipment to hoist by the constructors, at the moment, the oil pipe internal control combination device can hoist along with the hoisting fixture, and when the bottom plane of the double-male short section at the bottom of the oil pipe internal control combination device hoists to the position above the oil pipe coupling in the well, the constructors control the hoisting fixture to descend through the operation of the mechanical equipment, so that the connection between the double-male short section at the bottom of the oil pipe internal control combination device and the oil pipe coupling in the well is completed.

When the hoisting fixture is used for completing the transportation and the positioning of the oil pipe internal control combination device, at least two construction personnel are needed to cooperate, so that more labor is consumed, and time is consumed; in addition, because the operation process also needs the mobile equipment which has the fault risk, once the mobile equipment is in fault, the transportation and the positioning of the control combination device in the oil pipe cannot be realized.

Disclosure of Invention

The embodiment of the invention provides a hoisting clamp, which can solve the problems that in the prior art, when the hoisting clamp finishes the moving and the positioning of an internal control combination device, more manpower is consumed, time is consumed, and when a motorized device fails, the moving and the positioning of the internal control combination device cannot be finished.

The embodiment of the invention provides a hoisting clamp, which comprises: the lifting device comprises a disc, a lifting frame, a pull rope and a lifting ring arranged on the lifting frame;

wherein the disc includes: the oil pipe lifting device comprises a bayonet, a first support seat group, a second support seat group, a first support part, a second support part, a third support seat group, a fourth support seat group, a limiting pipe fitting, a limiting pin, a first lifting frame hole and a second lifting frame hole, wherein the bayonet is used for accommodating an oil pipe, the first support seat group, the second support seat group, the limiting pipe fitting, the limiting pin, the first lifting frame hole and the second lifting frame hole are arranged on the outer side of the first support seat group, the second lifting frame hole is arranged on the outer side of the second support seat group, and the first lifting frame hole and the second lifting frame hole are symmetrically arranged on the disk mountain;

the first support seat group and the second support seat group are symmetrically arranged on the disc, and the first support seat group is connected with the first support part and used for fixing the first support part; the second support seat group is connected with the second support part and used for fixing the second support part, and the first support part and the second support part are used for supporting a lifting short section of the oil pipe internal control combination device;

the third support group is connected with one end of the pipe limiting piece through a first bolt, a slope-shaped flat head is arranged at the other end of the pipe limiting piece, the pipe limiting piece can rotate by taking the first bolt as an axis, and the pipe limiting piece is used for fixing the disc;

the fourth support group is connected with the limiting pin in an inserting mode, the limiting pin comprises a front conical rod, and the front conical rod is used for being inserted below the slope-shaped flat head when the slope-shaped flat head rotates to be in contact with the lower surface of the disc so as to fix the slope-shaped flat head;

the lifting frame comprises: the lifting device comprises a cross frame beam, a first lifting rod and a second lifting rod, wherein the first lifting rod and the second lifting rod are perpendicular to the cross frame beam, the first lifting rod penetrates through a first lifting frame hole, the second lifting rod penetrates through a second lifting frame hole, the cross frame beam is provided with a lifting ring, and the lifting ring is used for suspending the hoisting fixture;

one end of the inhaul cable is connected with the first supporting part, the other end of the inhaul cable is connected with the second supporting part, and the inhaul cable is used for being lifted by a constructor so that the first supporting part and the second supporting part can cancel the support of the lifting short section.

In a possible implementation manner, the hoisting fixture further includes: the handrail ring is arranged on the outer edge of the disc, and the direction of the handrail ring is opposite to that of the bayonet.

In one possible implementation, the first support part includes: the first central tube, the first support rod penetrating through the circular disc, the first support tube ring, the first crank rod and the first metal rod;

the first center pipe is connected with the first support seat group through a second bolt, one end of the first center pipe is fixedly connected with the first support rod, and the other end of the first center pipe is fixedly connected with the first corner rod;

the first supporting pipe ring is arranged on the first supporting rod and used for supporting the lifting short section;

the first crank lever is provided with a first through hole, and the inhaul cable penetrates through the first through hole;

the first metal rod is arranged on the lower surface of the disc and can move clockwise or anticlockwise, and the inhaul cable penetrates through the first through hole and then is connected with the first metal rod.

In one possible implementation, the first supporting part further includes: a first connecting spring column;

the first missile connecting column is arranged on the first supporting rod and extends along the direction departing from the axis.

In one possible implementation, the second support portion includes: the second central tube, a second support rod, a second support tube ring, a second crank rod and a second metal rod penetrate through the circular disc;

the second central pipe is connected with the second support group through a third bolt, one end of the second central pipe is fixedly connected with the second support rod, and the other end of the second central pipe is fixedly connected with the second crank rod;

the second pipe supporting ring is arranged on the second supporting rod and used for supporting the lifting short section;

a second through hole is formed in the second crank lever, and the inhaul cable penetrates through the second through hole;

the second metal rod is arranged on the lower surface of the disc and can move clockwise or anticlockwise, and the inhaul cable penetrates through the second through hole and then is connected with the second metal rod.

In one possible implementation, the second support portion further includes: a second connecting ejection column;

the second connecting elastic column is arranged on the second supporting rod and extends along the direction deviating from the axis.

In one possible implementation, the carrier further includes: the first lifting rod is arranged on the first lifting rod, and the second lifting rod is arranged on the second lifting rod;

the first bullet control column is arranged opposite to the first bullet connecting column on the first supporting rod, and the second bullet control column is arranged opposite to the second bullet connecting column on the second supporting rod.

In a possible implementation manner, the hoisting fixture further includes: a first elastic body and a second elastic body;

one end of the first elastic body is connected with the first missile control column, and the other end of the first elastic body is connected with the first missile control column;

one end of the second elastic body is connected with the second bullet connecting column, and the other end of the second elastic body is connected with the second bullet control column;

the first elastic body and the second elastic body are used for enabling the distance between the first supporting rod of the first supporting portion and the second supporting rod of the second supporting portion to be increased when the lifting short section is in a compressed state, and therefore supporting of the lifting short section is cancelled.

In one possible implementation, the stop pin further includes: the middle connecting rod, the limiting block, the third elastic body and the handle;

the third elastic body is sleeved on the outer surface of the middle connecting rod;

the limiting piece is arranged at a position, close to the front conical rod, of the third elastic body and is connected with the middle connecting rod through a screw thread;

the handle is used for being held by constructors to control the third elastic body to deform, and the front conical rod is inserted below the slope-shaped flat head or pulled out from the lower side of the slope-shaped flat head.

In one possible implementation, the disk further includes: a first support hole and a second support hole;

wherein the first support bar passes through the first support hole to be fixedly connected with the first center pipe;

the second support rod penetrates through the second support hole and is fixedly connected with the second central tube.

In one possible implementation, the disk further includes: the first stable frame nut, the first fixed frame nut, the second stable frame nut and the second fixed frame nut;

the first stable frame nut and the second stable frame nut are arranged on the upper surface of the disc, and the first fixed frame nut and the second fixed frame nut are arranged on the lower surface of the disc;

the first lifting rod is connected with the first stable frame nut screw thread, penetrates through the first lifting frame hole and is connected with the first fixing frame nut screw thread;

the second lifting rod is connected with the second stable frame nut in a threaded mode, penetrates through the second lifting frame hole and then is connected with the second fixed frame nut in a threaded mode.

In a possible implementation manner, the vertical distance between the upper surface of the first pipe supporting ring of the first supporting part and the upper surface of the disc is greater than the vertical distance between the double-pin threaded part at the bottom of the oil pipe internal control combination device.

In a possible implementation manner, the vertical distance between the upper surface of the second pipe supporting ring of the second supporting portion and the upper surface of the disc is greater than the vertical distance between the double-pin threaded portion at the bottom of the oil pipe internal control combination device.

In a possible implementation, the distance from the bayonet arc bottom to the limiting piece is equal to the outer diameter of the oil pipe.

In a possible implementation, the outward opening width of the bayonet is larger than the outer diameter of the oil pipe.

In a possible implementation manner, a distance between the first support pipe ring of the first support part and the second support pipe ring of the second support part is not less than the outer diameter of the oil pipe.

In a possible implementation manner, the distance between the lifting ring and the upper surface of the disc is greater than the distance between the upper surface of the oil pipe internal control combination device and the upper surface of the disc.

In one possible implementation, the axis of the disc coincides with the axis of the bail.

In a possible implementation manner, the first seat group comprises 2 seats, the second seat group comprises 2 seats, the third seat group comprises 2 seats, and the fourth seat group comprises 2 seats.

In one possible implementation, the bayonet is U-shaped.

The technical scheme provided by the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a hoisting clamp, which mainly comprises: the device is provided with a lifting ring for hanging the hoisting clamp on the non-motorized equipment, a disc for mainly supporting the oil pipe internal control combination device, and a guy cable for connecting a double male short section at the bottom of the oil pipe internal control combination device with an oil pipe coupling in a well. And the disc is not only provided with a bayonet for accommodating an oil pipe and used for supporting a first supporting part and a second supporting part of the lifting short section, but also provided with a limiting pipe fitting and a limiting pin for fixing the hoisting fixture.

When the transportation of the oil pipe internal control combination device is in place, after the oil pipe internal control combination device is placed along the well mouth, one constructor can fix the first supporting part and the second supporting part below a coupling of the lifting short section and then push the limiting pin to fix the hoisting clamp in a manner of rotating the limiting pipe fitting. Then, after the hoisting fixture is suspended, the double male short sections at the bottom of the oil pipe internal control combination device are connected with the oil pipe coupling in the well by lifting the inhaul cable, so that the labor is saved, the required time is short, the working efficiency is improved, and in the operation process, the condition that the construction operation is influenced due to the fault of the mechanical equipment cannot occur because the mechanical equipment does not need to be lifted in an auxiliary mode.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of a hoisting fixture provided by an embodiment of the invention;

FIG. 2 is a top view of a lifting fixture according to an embodiment of the present invention;

the reference numerals in the drawings denote:

1-disc, 2-lifting frame, 3-guy cable,

4-a first bolt, 5-a hand ring, 6-a second bolt,

7-a third bolt, 8-a first elastomer, 9-a second elastomer,

101-bayonet, 102-first support group, 103-second support group,

104-a first support, 104-1-a first center tube, 104-2-a first support bar,

104-3-a first pipe supporting ring, 104-4-a first crank lever, 104-5-a first connecting elastic column,

105-a second support, 105-1-a second central tube, 105-2-a second support bar,

105-3-a second pipe supporting ring, 105-4-a second crank rod, 105-5-a second connecting elastic column,

106-a third seat group, 107-a fourth seat group, 108-a restriction,

108-1-slope-shaped flat head, 109-limit pin, 109-1-front taper rod,

109-2-middle connecting rod, 109-3-limiting block, 109-4-third elastic body,

109-5-handle, 110-first lifting frame hole, 111-second lifting frame hole,

112-first support hole, 113-second support hole, 114-first stabilizer nut,

115-first mounting nut, 116-second mounting nut, 117-second mounting nut,

201-bails, 202-crossbeams, 203-first bails,

204-second lifting bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

An embodiment of the invention provides a hoisting fixture, as shown in fig. 1 and fig. 2. This hoisting fixture includes: the lifting device comprises a disc 1, a lifting frame 2, a pull rope 3 and a lifting ring 201 arranged on the lifting frame 2, wherein the lifting ring 201 is arranged on a cross frame beam 202 of the lifting frame 2 and used for hanging a hoisting clamp;

wherein, disc 1 includes: the oil pipe clamping device comprises a bayonet 101 for accommodating an oil pipe, a first support seat group 102, a second support seat group 103, a first support part 104, a second support part 105, a third support seat group 106, a fourth support seat group 107, a limiting pipe 108, a limiting pin 109, a first lifting frame hole 110 and a second lifting frame hole 111, wherein the first lifting frame hole 110 is arranged on the outer side of the first support seat group 102, the second lifting frame hole 111 is arranged on the outer side of the second support seat group 103, and the first lifting frame hole 110 and the second lifting frame hole 111 are symmetrically arranged on a disc 1;

the first support set 102 and the second support set 103 are symmetrically arranged on the disc 1, and the first support set 102 is connected with the first support part 104 and used for fixing the first support part 104; the second support seat group 103 is connected with the second support part 105 and used for fixing the second support part 105, and the first support part 104 and the second support part 105 are used for supporting a lifting short section of the oil pipe internal control combination device;

the third support group 106 is connected with one end of a limiting pipe 108 through a first bolt 4, the other end of the limiting pipe 108 is provided with a slope-shaped flat head 108-1, the limiting pipe 108 can rotate by taking the first bolt 4 as an axis, and the limiting pipe 108 is used for fixing the disc 1;

the fourth support group 107 is inserted and connected with a limiting pin 109, the limiting pin 109 comprises a front conical rod 109-1, and the front conical rod 109-1 is used for being inserted below the slope-shaped flat head 108-1 to fix the slope-shaped flat head 108-1 when the slope-shaped flat head 108-1 rotates to the lower surface of the contact disc 1;

the lifting frame 2 comprises: the lifting device comprises a cross frame beam 202, a first lifting rod 203 and a second lifting rod 204, wherein the first lifting rod 203 is perpendicular to the cross frame beam 202, the first lifting rod 203 penetrates through a first lifting frame hole 110, and the second lifting rod 204 penetrates through a second lifting frame hole 111;

one end of the cable 3 is connected with the first supporting part 104, the other end of the cable 3 is connected with the second supporting part 105, and the cable 3 is used for being lifted by constructors, so that the first supporting part 104 and the second supporting part 105 cancel the support of the lifting short section.

The first point to be described is that, as shown in fig. 2, the first poppet hole 110, the first seat group 102, the second seat group 103, and the second poppet hole 111 are located on a straight line passing through the axis of the disc 1, the first seat group 102 and the first poppet hole 110 are disposed on one side of the axis of the disc 1, and the second seat group 103 and the second poppet hole 111 are disposed on the other side of the axis of the disc 1.

The distance from the first lifting frame hole 110 to the axis of the disc 1 is greater than the distance from the first support set 102 to the axis of the disc 1, that is, the first lifting frame hole 110 is arranged outside the first support set 102, and similarly, the second lifting frame hole 111 is also arranged outside the second support set 103.

The first lifting frame hole 110 and the second lifting frame hole 111 are equidistant from the axis of the disc 1, that is, the first lifting frame hole 110 and the second lifting frame hole 111 are symmetrically arranged on the disc 1, and similarly, the first support group 102 and the second support group 103 are also symmetrically arranged on the disc 1.

The second point to be noted is that, as shown in fig. 2, the limit pin 109 passes through the third seat set 106, that is, the third seat set 106 is inserted and connected with the limit pin 109.

It should be noted that, in the embodiment of the present invention, the lower surface of the disc 1 refers to the surface of the disc 1 close to the downhole tubing coupling after the hoisting fixture is fixed to the control assembly in the tubing.

The hoisting fixture provided by the embodiment of the invention can be used for completing the moving and positioning of the oil pipe internal control combination device to assist in implementing a well control scene when an oil pipe or oil pipe sleeve annulus overflow phenomenon occurs during underground operation. Wherein, migration in place refers to: and after the oil pipe internal control combination device is placed along the well mouth, connecting the double male short sections at the bottom of the oil pipe internal control combination device with the oil pipe coupling in the well.

When the hoisting fixture is needed to finish the transportation and the positioning of the oil pipe internal control combination device, after the oil pipe internal control combination device is placed at a wellhead, firstly, a constructor can fix the first supporting part 104 and the second supporting part 105 below a coupling of the lifting short section, enable the first supporting part 104 and the second supporting part 105 to support the lifting short section, then rotate the limiting pipe 108, when a slope-shaped flat head 108-1 at one end of the limiting pipe 108 contacts the lower surface of the disc 1, the constructor pushes the limiting pin 109, enable a front conical rod 109-1 of the limiting pin 109 to penetrate below the slope-shaped flat head 108-1, fix the hoisting fixture through the fixed slope-shaped flat head 108-1, and then hang a lifting ring 201 on the lifting frame 2 by using a non-motorized equipment pull rope from the top of the workover rig.

In a possible implementation manner, it is further required to ensure that the bottom plane of the double male short section at the bottom of the oil pipe internal control combination device is higher than the oil pipe coupling in the well by a certain distance, preferably, the distance may be 30-40mm (millimeters), and this is not particularly limited in the embodiment of the present invention.

In addition, the axial lead of the double male short sections is coincident or nearly coincident with the axial lead of the oil pipe coupling in the well, finally, a constructor lifts the guy cable 3 connected with the first supporting part 104 and the second supporting part 105 downwards, so that the first supporting part 104 and the second supporting part 105 cancel the support of the lifting short sections, the oil pipe internal control combination device falls down under the action of gravity, and the double male short sections positioned at the bottom of the oil pipe internal control combination device enter the oil pipe coupling in the well.

After the control combination device in the oil pipe is moved to the proper position, a constructor pulls out the limiting pin 109 to release the fixation of the slope-shaped flat head 108-1, the limiting pipe 108 falls due to the action of gravity, then the control on the oil pipe is released, and the pull rope on the lifting ring 201 is pulled to enable the hoisting fixture to withdraw from the wellhead.

Therefore, when the hoisting clamp provided by the embodiment of the invention finishes the transportation and the in-place of the oil pipe internal control combination device, the double male short sections at the bottom of the oil pipe internal control combination device can be connected with the oil pipe coupling in the well through the operation of a constructor, so that the manpower is saved, the required time is short, the working efficiency is improved, the auxiliary lifting of mechanical equipment is not needed in the operation process, and the condition that the construction operation is influenced due to the fault of the mechanical equipment cannot occur.

In a possible implementation manner, as shown in fig. 2, the hoisting fixture further includes: the holding ring 5 is arranged on the outer edge of the disc 1 opposite to the direction of the bayonet 101.

In the operation process, a constructor holds the hand ring 5 by one hand to control the shaft axis of the double male short sections at the bottom of the oil pipe internal control combination device to coincide with or be close to coincide with the shaft axis of the oil pipe coupling in the well, and lifts the inhaul cable 3 downwards by one hand to enable the first supporting part 104 and the second supporting part 105 to cancel the support of the lifting short sections.

In one possible implementation, as shown in fig. 1, the first supporting portion 104 includes: the first center pipe 104-1, the first support rod 104-2 penetrating the disk 1, the first support ring 104-3, the first crank lever 104-4, and the first metal rod, and the first center pipe 104-1 is coupled to the first base unit 102 by the second bolt 6, thereby fixing the first support portion 104 to the disk 1.

Two ends of the first central tube 104-1 are respectively fixedly connected with one end of the first support rod 104-2 and one end of the first crank rod 104-4, a first support tube ring 104-3 is arranged at the other end of the first support rod 104-2, a first through hole is arranged at the other end of the first crank rod 104-4, a first metal rod is arranged at the outer side of the first crank rod 104-4, the first metal rod is arranged on the lower surface of the disc 1 and can move clockwise or anticlockwise, and one end of the inhaul cable 3 is connected with the first metal rod after passing through the first through hole.

It should be noted that when the hoisting fixture is used to complete the transportation and positioning of the internal control combination device of the oil pipe, the first support part 104 and the second support part 105 need to work together.

Also, as shown in fig. 1, the second support portion 105 includes: a second center pipe 105-1, a second support rod 105-2 passing through the disc 1, a second support ring 105-3, a second turn rod 105-4, and a second metal rod, and the second center pipe 105-1 is connected to the second seat group 103 by a third bolt 7, thereby fixing the second support 105 to the disc 1.

Two ends of a second central tube 105-1 are respectively fixedly connected with one end of a second support rod 105-2 and one end of a second crank rod 105-4, the other end of the second support rod 105-2 is provided with a second support tube ring 105-3, the other end of the second crank rod 105-4 is provided with a second through hole, a second metal rod is arranged on the outer side of the second crank rod 105-4, the second metal rod is arranged on the lower surface of the disc 1 and can move clockwise or anticlockwise, and the other end of the inhaul cable 3 is connected with the second metal rod after passing through the second through hole.

The supporting function of the first supporting part 104 and the second supporting part 105 on the lifting short section is realized by a first pipe supporting ring 104-3 of the first supporting part 104 and a second pipe supporting ring 105-3 of the second supporting part 105. When the constructor pulls the cable 3 downwards, the cable 3 drives the metal rod and the crank rod to move simultaneously, so that the first support rod 104-2 of the first support part 104 and the second support rod 105-2 of the second support part 105 are controlled to move in opposite directions, and when the force acting on the first support rod 104-2 and the second support rod 105-2 can enable the distance between the first support pipe ring 104-3 and the second support pipe ring 105-3 to be increased, the first support part 104 and the second support part 105 cancel the support of the lifting short section.

The first point to be noted is that the meaning of the cable 3 driving the metal rod and the crank rod to move simultaneously is: one end of the inhaul cable 3 drives the first metal rod and the first crank lever 104-4 to move, and meanwhile, the other end of the inhaul cable 3 drives the second metal rod and the second crank lever 105-4 to move.

The second point to be noted is that, as shown in fig. 2, the first support rod 104-2 passes through the first support hole 112 of the disc 1 to be connected to the first center tube 104-1, and the second support rod 105-2 passes through the second support hole 113 of the disc 1 to be fixedly connected to the second center tube 105-1.

In detail, as shown in fig. 1, a first resilient column 104-5 is further disposed on the first supporting rod 104-2 of the first supporting portion 104, a second resilient column 105-5 is further disposed on the second supporting rod 105-2 of the second supporting portion 105, and both resilient columns extend in a direction away from the axis. The lifting frame 2 is provided with a first bullet control column 203-1 and a second bullet control column 204-1 which are respectively opposite to the first bullet connecting column 104-5 and the second bullet connecting column 105-5, a first elastic body 8 is arranged between the first bullet control column 203-1 and the first bullet connecting column 104-5, and a second elastic body 9 is arranged between the second bullet control column 204-1 and the second bullet connecting column 105-5.

Exemplarily, the first elastic body 8 and the second elastic body 9 may be springs.

When the constructor pulls the cable 3 downward, when the force acting between the first support bar 104-2 and the second support bar 105-2 is enough to deform the first elastic body 8 and the second elastic body 9, the distance between the first support pipe ring 104-3 of the first support part 104 and the second support pipe ring 105-3 of the second support part 105 is increased, so that the first support part 104 and the second support part 105 cancel the support of the lifting sub.

In a possible implementation manner, when the slope-shaped flat head 108-1 arranged at one end of the limiting member 108 contacts the lower surface of the disc 1, a constructor needs to push the limiting pin 109 so that the front tapered rod 109-1 of the limiting pin 109 is inserted below the slope-shaped flat head 108-1.

Wherein, for the convenience of constructor's operation, as shown in fig. 2, the spacer pin 109 still includes: the middle connecting rod 109-2, the limiting block 109-3, the third elastic body 109-4 and the handle 109-5, wherein the third elastic body 109-4 is sleeved on the outer surface of the middle connecting rod 109-2, and the limiting block is arranged at the position of the third elastic body 109-4 close to the front taper rod 109-1 and is in threaded connection with the middle connecting rod 109-2; the handle 109-5 is used for being held by a constructor to control the deformation of the third elastic body 109-4.

In the operation process, when a slope-shaped flat head 108-1 arranged at one end of the pipe limiting piece 108 contacts the lower surface of the disc 1, a constructor holds the handle 109-5 and pushes the middle connecting rod 109-2 and the front conical rod 109-1, so that the front conical rod 109-1 is inserted below the slope-shaped flat head 108-1 to fix the hoisting fixture; after the control combination device in the oil pipe is moved in place, a constructor holds the handle 109-5, pulls out the front taper rod 109-1 from the lower part of the slope-shaped flat head 108-1, releases the fixation of the slope-shaped flat head 108-1, and the pipe limiting piece 108 falls under the action of gravity, so that the control of the hoisting clamp on the oil pipe is released.

It should be noted that, after the front tapered rod 109-1 is inserted below the slope-shaped flat head 108-1, the third elastic body 109-4 deforms, and the deformation amount thereof can be controlled by the limiting block 109-3, so as to ensure that the third elastic body 109-4 is not damaged within the elastic deformation range.

In a possible implementation manner, in order to improve the fastening performance of the connection between the lifting frame 2 and the disc 1, as shown in fig. 1, a first frame stabilizing nut 114 and a first frame fixing nut 115 are respectively disposed on the upper side and the lower side of the first lifting frame hole 110, and the first lifting rod 203 is screwed with the first frame stabilizing nut 114, passes through the first lifting frame hole 110, and is then screwed with the first frame fixing nut 115.

Similarly, the upper side and the lower side of the second lifting frame hole 111 are respectively provided with a second stable frame nut 116 and a second fixed frame nut 117, and the second lifting rod 204 is connected with the second stable frame nut 116 through the second lifting frame hole 111 and then connected with the second fixed frame nut 117 through screw threads.

In a possible implementation manner, in the operation process, after the first supporting portion 104 and the second supporting portion 105 cancel the support of the lifting short section, the lifting short section falls due to the action of gravity to drive the double male short sections to fall simultaneously, the disc 1 moves upwards after the load is released, and the falling distance of the lifting short section is equal to the distance between the upper plane of the first supporting pipe ring 104-3 of the first supporting portion 104 and the upper plane of the disc 1.

In order to eliminate the resistance interference on the descending lower plane of the lifting nipple coupling caused by the ascending of the disc 1, thereby causing the situation that the double male nipples cannot be connected with the tubing coupling, the vertical distance between the upper surface of the first pipe supporting ring 104-3 of the first supporting part 104 and the upper surface of the disc 1 needs to be larger than the vertical distance of the thread part at the bottom of the double male nipples. The difference between the vertical distances may be any value between 30 and 50mm, such as 30mm, 40mm, 50mm, and the like, which is not particularly limited in the embodiment of the present invention.

Similarly, the vertical distance between the upper surface of the second pipe supporting ring 105-3 of the second supporting portion 105 and the upper surface of the circular disc 1 is greater than the vertical distance between the threaded portions at the bottom of the double male nipple, and the difference between the vertical distances may also be any value between 30mm and 50mm, such as 30mm, 40mm, 50mm, and the like, which is not specifically limited in the embodiment of the present invention.

It should be noted that, after the double pin nipple falls down, the thread arranged on the double pin nipple enters the thread of the oil pipe coupling in the well, illustratively, an external thread is arranged on the double pin nipple, and an internal thread matched with the external thread is arranged on the oil pipe coupling in the well.

In a possible implementation manner, in order to improve the fixing performance of the bayonet 101 of the hoisting fixture on the oil pipe, the distance from the arc bottom of the bayonet 101 to the limiting pipe 108 is equal to the outer diameter of the oil pipe, so that the oil pipe enters the bayonet 101 through the outward opening of the bayonet 101, and the fixing of the bayonet 101 of the hoisting fixture on the oil pipe is completed, wherein the outward opening width of the bayonet 101 is greater than the outer diameter of the oil pipe.

The difference between the distances may be any value between 2 and 4mm, such as 2mm, 3mm, 4mm, and the like, which is not specifically limited in the embodiment of the present invention.

In a possible implementation manner, in an operation process, after the first supporting portion 104 and the second supporting portion 105 cancel the support of the lifting sub, the lifting sub falls due to the action of gravity, in order to avoid that a lifting sub collar with a larger outer diameter collides with the bayonet 101 to damage the bayonet 101, an inner side distance between the first supporting rod 104-2 of the first supporting portion 104 and the second supporting rod 105-2 of the second supporting portion 105 at a position close to the upper surface of the disc 1 is greater than an outer diameter of the lifting sub collar, and a difference between the distances may be any value of 4 to 6mm, such as 4mm, 5mm, 6mm, and the like, which is not specifically limited in the embodiment of the present invention.

Wherein, disc 1 upper surface is: after the hoisting fixture is fixed in the oil pipe internal control combination device, the surface of the disc 1 far away from the oil pipe coupling in the well is provided with the inner side spacing as follows: because the first support rod and the second support rod are of a certain thickness, after the lifting short section is supported by the first support part 104 and the second support part 105, the distance between the surfaces of the first support rod 104-2 and the second support rod 105-2 close to the oil pipe is respectively kept.

In a possible implementation manner, in order to improve the supporting stability of the first supporting portion 104 and the second supporting portion 105 to the lifting sub, the distance between the first pipe supporting ring 104-3 of the first supporting portion 104 and the second pipe supporting ring 105-3 of the second supporting portion 105 is not less than the outer diameter of the oil pipe.

In a possible implementation manner, in order to ensure that the non-motorized equipment hangs down the pull rope to suspend the lifting ring 201 on the lifting frame 2, the first pipe supporting ring 104-3 of the first supporting part 104 and the second pipe supporting ring 105-3 of the second supporting part 105 can support the lifting short section, and the distance between the lifting ring 201 and the upper surface of the disc 1 is further greater than the distance between the upper surface of the oil pipe internal control combination device and the upper surface of the disc 1. The difference may be any value between 30 and 50mm, such as 30mm, 40mm, 50mm, and the like, which is not specifically limited in this embodiment of the present invention.

In a possible implementation, in order to keep the hoisting fixture stable during use, the axis of the disc 1 of the hoisting fixture coincides with the axis of the bail 201.

In one possible implementation, the first base set 102 includes 2 bases, and the first center tube 104-1 of the first support portion 104 is connected to the first base set 102 by the second bolt 6; the second bracket group 103 comprises 2 brackets, and a second center tube 105-1 of the second support part 105 is connected with the second bracket group 103 through a third bolt 7; the third support group 106 comprises 2 supports, and one end of the pipe limiting piece 108 is connected with the third support group 106 through a first bolt 4; the fourth bracket set 107 comprises 2 brackets, and the middle connecting rod 109-2 of the limiting pin 109 penetrates through the fourth bracket set 107.

In a possible implementation manner, the type of the bayonet 101 on the disc 1 of the hoisting fixture may be U-shaped, or any other shape that meets the requirement, which is not specifically limited by the embodiment of the present invention.

In summary, the method for moving the internal control combination device of the oil pipe in place and removing the hoisting clamp provided by the embodiment of the invention comprises the following steps:

(1) after the standby and oil pipe internal control combined device is hoisted and placed along a wellhead, firstly constructors can fix the first supporting part 104 and the second supporting part 105 below a coupling of the lifting short section to enable the first supporting part 104 and the second supporting part 105 to support the lifting short section, then the pipe limiting piece 108 is rotated, when the slope-shaped flat head 108-1 at one end of the pipe limiting member 108 contacts the lower surface of the disc 1, the constructor pushes the limit pin 109 to make the front taper rod 109-1 of the limit pin 109 penetrate under the slope-shaped flat head 108-1, fixes the hoisting fixture by fixing the slope-shaped flat head 108-1, the builder then hangs the bail 201 on the bail 2 from the top of the workover rig using the non-motorized equipment to hang the drawstring, and the bottom plane of the double male short sections at the bottom of the oil pipe internal control combination device is required to be higher than the well oil pipe coupling for a certain distance, and the axial lead of the double male short sections is coincident or nearly coincident with the axial lead of the well oil pipe coupling.

(2) Use, constructor holds on the one hand and holds hand ring 5 with the position relative of controlling the two public nipple joints of oil pipe internal control composite set bottom and well oil pipe coupling, and draw cable 3 downwards on the other hand, makes first supporting part 104 and second supporting part 105 cancellation support to promoting the nipple joint, and the internal control composite set of oil pipe can be because the effect of gravity whereabouts, and the two public nipple joints that are located oil pipe internal control composite set bottom get into well oil pipe coupling, and constructor accomplishes the screw thread connection of two public nipple joints and well oil pipe coupling.

(3) After the removal and the completion of the transportation and the positioning of the internal control combination device of the oil pipe, a constructor pulls out the limit pin 109 to remove the fixation of the slope-shaped flat head 108-1, the limit pipe fitting 108 falls due to the action of gravity, then the control of the oil pipe is removed, and then the pull rope on the lifting ring 201 is pulled to enable the hoisting fixture to be withdrawn from the well head and placed in a place which does not influence the operation of the underground operation such as the well head lifting and dropping the oil pipe.

When the hoisting fixture provided by the embodiment of the invention finishes the transportation and the positioning of the oil pipe internal control combination device, one constructor can finish the connection between the double male short sections at the bottom of the oil pipe internal control combination device and the oil pipe coupling in the well and finish the removal of the hoisting fixture, thereby improving the working efficiency. In addition, in the operation process, because the auxiliary lifting of the motorized equipment is not needed, the condition that the construction operation is influenced due to the fault of the motorized equipment can not occur.

The above description is only for facilitating the understanding of the technical solutions of the present invention by those skilled in the art, and is not intended to limit the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hoisting clamp, characterized in that, hoisting clamp includes: the lifting device comprises a disc, a lifting frame, a pull rope and a lifting ring arranged on the lifting frame;

wherein the disc includes: the oil pipe lifting device comprises a bayonet, a first support seat group, a second support seat group, a first support part, a second support part, a third support seat group, a fourth support seat group, a limiting pipe fitting, a limiting pin, a first lifting frame hole and a second lifting frame hole, wherein the bayonet is used for accommodating an oil pipe, the first support seat group, the second support seat group, the limiting pipe fitting, the limiting pin, the first lifting frame hole and the second lifting frame hole are arranged on the outer side of the first support seat group, the second lifting frame hole is arranged on the outer side of the second support seat group, and the first lifting frame hole and the second lifting frame hole are symmetrically arranged on a disc;

2. Hoisting clamp according to claim 1, characterized in that it further comprises: the handrail ring is arranged on the outer edge of the disc, and the direction of the handrail ring is opposite to that of the bayonet.

3. Hoisting clamp according to claim 1, characterized in that the first support part comprises: the first central tube, the first support rod penetrating through the circular disc, the first support tube ring, the first crank rod and the first metal rod;

4. Hoisting clamp according to claim 3, characterized in that the first support part further comprises: a first connecting spring column;

5. Hoisting clamp according to claim 1, wherein the second support part comprises: the second central tube, a second support rod, a second support tube ring, a second crank rod and a second metal rod penetrate through the circular disc;

6. Hoisting clamp according to claim 5, wherein the second support part further comprises: a second connecting ejection column;

7. The hoisting fixture of claim 1 wherein the lifting frame further comprises: the first lifting rod is arranged on the first lifting rod, and the second lifting rod is arranged on the second lifting rod;

8. Hoisting clamp according to claim 7, characterized in that it further comprises: a first elastic body and a second elastic body;

9. The hoisting clamp of claim 1, wherein the limit pin further comprises: the middle connecting rod, the limiting block, the third elastic body and the handle;

10. Hoisting clamp according to claim 1, wherein the disc further comprises: a first support hole and a second support hole;

11. Hoisting clamp according to claim 1, wherein the disc further comprises: the first stable frame nut, the first fixed frame nut, the second stable frame nut and the second fixed frame nut;

12. The hoisting fixture according to claim 1, wherein the vertical distance between the upper surface of the first pipe supporting ring of the first supporting part and the upper surface of the disc is greater than the vertical distance between the double male short section threaded part at the bottom of the oil pipe internal control combination device.

13. The hoisting fixture according to claim 1, wherein the vertical distance between the upper surface of the second pipe supporting ring of the second support part and the upper surface of the disc is greater than the vertical distance between the double male short section thread part at the bottom of the oil pipe internal control combination device.

14. The hoisting clamp of claim 1 wherein the distance from the bottom of the bayonet arc to the restrictor piece is equal to the outer diameter of the oil pipe.

15. Hoisting clamp according to claim 1, wherein the width of the opening of the bayonet facing outwards is greater than the outer diameter of the oil pipe.

16. The hoisting fixture of claim 1, wherein the distance between the first pipe supporting ring of the first support part and the second pipe supporting ring of the second support part is not less than the outer diameter of the oil pipe.

17. The hoisting fixture of claim 1 wherein the distance between the bail and the upper surface of the puck is greater than the distance between the upper surface of the tubing internal control assembly and the upper surface of the puck.

18. Lifting clamp according to claim 1, characterized in that the axis of the disc coincides with the axis of the bail.

19. The hoisting jig of claim 1 wherein the first set of brackets comprises 2 brackets, the second set of brackets comprises 2 brackets, the third set of brackets comprises 2 brackets, and the fourth set of brackets comprises 2 brackets.

20. Hoisting clamp according to any one of claims 1 to 19, wherein the bayonet is U-shaped.