CN222457363U - A quick lifting device for casing going down into a well - Google Patents

Abstract

The application provides a quick lifting device for a well casing, which relates to the field of drilling construction of large-caliber wells, and comprises a lifting nipple, wherein the top of the lifting nipple is connected with a drill rod, the lifting nipple is clamped in a clamping groove on the well casing to be lifted through a lifting beam, the clamping groove comprises a mutually communicated extending part and a clamping positioning part, the extending direction of the clamping positioning part and the extending direction of the extending part form a clamping included angle, so that when the lifting beam moves downwards to the bottom of the well casing guided by the extending part, the lifting beam is driven to enter the clamping positioning part through the rotation of the drill rod, the connection between the well casing to be lifted and the drill rod is realized, the lifting Liang Congka groove is withdrawn after the well casing to be lifted is in place, the quick connection and separation between the drill rod and the casing are realized through the method of screwing in and screwing out the lifting beam, the whole device is simple in processing and using operation, and cost is saved.

Description

Quick lifting device for well casing

Technical Field

The application relates to the field of drilling construction of large-caliber wells, in particular to a quick lifting device for a well-running sleeve.

Background

In the construction of a well, when the secondary or tertiary sleeve is arranged, the sleeve head needs to be connected with a drill rod, and the secondary or tertiary sleeve is arranged in place in the well by lifting the drill rod.

The existing pipe-discharging technology is that an adapter is processed on a drill pipe, left-handed threads are formed at two ends of the adapter, left-handed threads are processed on a sleeve head, left-handed threads are processed on the bottom of a drill pipe, and therefore the sleeve is connected with the drill pipe through the left-handed thread adapter, and is lowered into a preset position in a well, but when the drill pipe is lowered into the well, a secondary or tertiary sleeve in the well is connected with the drill pipe, the separation steps are complicated, and the construction efficiency is low.

Disclosure of utility model

The application aims to solve the problems in the prior art, and provides the quick lifting device for the down-hole sleeve, which is used for quickly connecting the sleeve head with the drill rod to convey the sleeve down-hole during the down-hole sleeve, has simple processing and quick operation, is convenient to separate the down-hole sleeve from the drill rod, and saves cost.

In order to achieve the above purpose, the technical scheme adopted by the application is as follows:

The application provides a quick lifting device for a well sleeve, which comprises a lifting nipple, wherein the top of the lifting nipple is connected with a drill rod, a lifting beam is horizontally arranged on the lifting nipple, two clamping grooves are symmetrically arranged on the wall of the well sleeve by taking the axis of the well sleeve to be lowered as a symmetrical center, each clamping groove comprises an extending part and a clamping positioning part which are communicated with each other, the extending part extends downwards from the top of the wall of the well sleeve to be lowered, and a clamping included angle is formed between the extending direction of the clamping positioning part and the extending direction of the extending part, so that when the lifting beam moves downwards to the bottom of the well sleeve by guiding through the extending part, the lifting beam is driven to enter the clamping positioning part by the rotation of the drill rod, and the connection between the well sleeve to be lowered and the drill rod is realized.

Alternatively, the clamping groove is positioned on the inner side of the wall of the sleeve to be lowered into the well, or the clamping groove penetrates through the wall of the sleeve to be lowered into the well.

Optionally, the extension portion extends in a direction parallel to the axis of the sleeve to be run.

Optionally, the extension extends obliquely downward along the wall of the well casing to be run.

Optionally, the extending direction of the clamping positioning portion is a circumferential direction of the sleeve to be lowered in the well, where the bottom of the extending portion is located.

Optionally, one end of the clamping positioning portion, which is far away from the extending portion, is provided with a limiting portion extending towards the top of the sleeve to be driven.

Optionally, the extending direction of the clamping positioning portion extends from the bottom of the extending portion to the top of the sleeve to be lowered into the well.

Optionally, the lifting beam and the lifting nipple form a t-shaped structure or a cross-shaped structure.

Optionally, a rib plate is arranged between the lifting beam and the lifting pup joint, and two adjacent side walls of the rib plate are respectively connected with the outer wall of the lifting beam and the outer wall of the lifting pup joint.

Optionally, the top of the lifting nipple is connected with the bottom of the drill rod through a wire-changing connector.

The quick lifting device for the well sleeve has the beneficial effects that the quick lifting device comprises the lifting nipple, the top of the lifting nipple is connected with a drill rod, the lifting nipple is clamped in the clamping groove on the well sleeve to be lifted through the lifting beam, the clamping groove comprises the mutually communicated extending part and the clamping positioning part, the extending direction of the clamping positioning part and the extending direction of the extending part form a clamping included angle, when the lifting beam moves downwards to the bottom of the lifting beam through the extending part in a guiding way, the lifting beam is driven to enter the clamping positioning part through the rotation of the drill rod, so that the connection between the well sleeve to be lifted and the drill rod is realized, the lifting Liang Congka groove is withdrawn after the well sleeve to be lifted is in place, the quick connection and the separation between the drill rod and the sleeve are realized through the method of screwing in and unscrewing the lifting beam, the whole device is simple in processing and using operation, and cost is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a quick lifting device for a downhole sleeve according to an embodiment of the present application;

Fig. 2 is a schematic structural diagram II of a quick lifting device for a downhole sleeve according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a quick lifting device for a downhole sleeve according to an embodiment of the present application.

The icons comprise a 10-sleeve to be lowered into a well, a 110-clamping groove, a 111-extension part, a 112-clamping positioning part, a 20-lifting short section, a 210-first connecting groove, a 220-connecting hole, a 30-lifting beam, a 40-drill rod and a 50-rib plate.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. It should be noted that, under the condition of no conflict, the features of the embodiments of the present application may be combined with each other, and the combined embodiments still fall within the protection scope of the present application.

When the secondary or tertiary sleeve is arranged in the construction of the well, the sleeve head needs to be connected with a drill rod, and the secondary or tertiary sleeve is arranged in place in the well by lifting the drill rod. In the prior art, the sleeve is connected with the drill rod through the threaded adapter, and after the sleeve is put into a preset position in a well, the sleeve and the drill hole are difficult to separate, so that the construction efficiency is affected. The application provides a quick lifting device for a well sleeve, which can quickly separate a well sleeve 10 from a lifting pup joint 20, and has the advantages of quick and simple processing and operation methods and cost saving.

Referring to fig. 1, the application provides a quick lifting device for a well sleeve, which comprises a lifting nipple 20, wherein the top of the lifting nipple 20 is connected with a drill rod 40, lifting beams 30 are horizontally arranged on the lifting nipple 20, two clamping grooves 110 are symmetrically arranged on the wall of the well sleeve 10 by taking the axis of the well sleeve 10 as a symmetrical center, the clamping grooves 110 comprise mutually communicated extending parts 111 and clamping positioning parts 112, the extending parts 111 extend downwards from the top of the wall of the well sleeve 10, and the extending directions of the clamping positioning parts 112 and the extending directions of the extending parts 111 form clamping included angles, so that when the lifting beams 30 move downwards to the bottom of the lifting nipple through the guiding of the extending parts 111, the lifting beams 30 are driven to enter the clamping positioning parts 112 through the rotation of the drill rod 40, and the connection of the well sleeve 10 and the drill rod 40 is realized.

In the embodiment of fig. 1, two clamping grooves 110 are respectively a clamping groove I and a clamping groove II, the clamping groove I and the clamping groove II are axially symmetrically arranged relative to the axis of the sleeve 10 to be lowered into the well, the lifting beam 30 enters the sleeve 10 to be lowered into the well from the extending part 111 of the clamping groove 110 along the extending direction of the clamping groove 110, the lifting beam 30 is clamped into the clamping positioning part 112 of the clamping groove 110 at the bending position of the bottom of the clamping groove 110 and is rotated and lifted along the axis of the sleeve 10 to be lowered into the well, the drill rod 40 is connected with the lifting nipple 20 to drive the sleeve 10 to be lowered into the well to be lifted, the lifting nipple 20 lifts the sleeve 10 to be lowered into the well to a preset position, the lifting beam 30 is rotated out of the clamping groove 110, the lifting nipple 20 and the sleeve 10 to be lowered into the well are separated, and the drill rod 40 drives the lifting nipple 20 to be lifted out of the well.

Specifically, the clamping groove 110 is positioned on the inner side of the wall of the sleeve 10 to be lowered, or the clamping groove 110 is arranged through the wall of the sleeve 10 to be lowered.

Further, the extending direction of the extending portion 111 is parallel to the axis of the sleeve 10 to be driven.

Still further, the extension 111 extends obliquely downward along the wall of the casing 10 to be lowered.

In an embodiment of the present application, the extending direction of the clamping positioning portion 112 is the circumferential direction of the sleeve 10 to be lowered where the bottom of the extending portion 111 is located.

Specifically, the effect of the clamping included angle is that the extending direction of the extending portion 111 is different from the extending direction of the clamping positioning portion 112, and after the lifting beam 30 receives the upward lifting force, the clamping positioning portion 112 is used as a force bearing portion to lift the sleeve 10 to be lowered. Therefore, when the extending direction of the extending portion 111 is parallel to the axis of the sleeve 10 to be lowered, the clamping and positioning portion 112 may extend horizontally along the circumference of the sleeve 10 to be lowered to form a clamping angle with a right angle, or the clamping and positioning portion 112 may tilt upwards along the sleeve 10 to be lowered to form a clamping angle with an acute angle. Similarly, when the extension portion 111 extends obliquely downward along the wall of the sleeve 10 to be lowered, the clamping and positioning portion 112 can also form a clamping angle with the extension portion 111 in the same manner. In addition, the locking positioning portion 112 may extend in a non-linear manner, but may extend in an arc manner, so as to achieve the above-mentioned effect.

Further, a limiting portion extending toward the top of the sleeve 10 to be driven is disposed at one end of the clamping and positioning portion 112 away from the extending portion 111. As shown in fig. 1, in the embodiment of the present application, the extending direction of the clamping and positioning portion 112 extends from the bottom of the extending portion 111 to the top of the sleeve 10 to be lowered.

Specifically, the bottom of the lifting nipple 20 forms a connecting hole 220, the lifting beam 30 passes through the connecting hole 220 and is welded and fixed with the hole wall of the connecting hole 220, the lifting beam 30 is made of round steel, and has good weldability, and the lifting beam 30 is subjected to thermal refining so that the strength of the lifting beam 30 meets the requirement of safely lifting the sleeve 10 to be lowered into the well, and the lifting beam is simple in connection mode, low in cost and convenient to implement.

As shown in fig. 2, the limiting structure in the embodiment of the application is a rib plate 50, the rib plate 50 is connected with the lifting beam 30 and the lifting nipple 20 along the extending direction of the lifting beam 30, in the embodiment of the application, the length of the lifting nipple 20 is 500mm, the lifting beam 30 is connected at the bottom of the lifting nipple 20, and the rib plate 50 not only can prevent the lifting beam 30 from horizontal displacement and shaking in the lifting process, but also can improve the connection strength of the lifting nipple 20 and the lifting beam 30.

Specifically, the top of the lifting nipple 20 is connected with the bottom of the drill rod 40 through a variable wire connector, the upper portion of the lifting nipple 20 is connected with the drill rod 40, a first connecting groove 210 is formed in the top of the lifting nipple 20, a connecting block is arranged at the bottom of the drill rod 40, and the connecting block is in threaded connection with the first connecting groove 210.

Further, the number of the drill rods 40 is multiple, the drill rods 40 are connected through the variable thread joints, a second connecting groove is formed in the top of each drill rod 40, the second connecting groove is in threaded connection with the connecting block, so that two drill rods 40 are connected with each other, the drill rods 40 are connected, and the depth of the sleeve 10 to be lowered into the well is prolonged.

Specifically, the width of the clamping groove 110 is more than 5mm larger than the diameter of the lifting beam, so that the lifting beam 30 can be screwed into the clamping groove 110 smoothly to be fixed.

Specifically, the processing manners of the threaded portions in the first connecting groove 210, the second connecting groove and the outside of the connecting block include thermal refining to satisfy the connection strength. The lifting nipple 20 is made of a material with good weldability, the threaded portion is subjected to thermal refining, the threaded strength of the drill rod 40 is met, and the lifting beam thermal refining strength meets the requirement of safely lifting the sleeve 10 to be lowered into the well.

The lifting nipple 20 of the quick lifting device for the well sleeve provided by the embodiment of the application is 500mm long and is convenient to install, the lifting nipple 20 is connected with the drill rod 40 to send the sleeve 10 to be well in a designated position in the well by adopting the lifting beam screwed into the clamping groove 110, the lifting beam is released from the clamping groove 110 after the drill rod 40 rotates, the drill rod 40 is lifted out of the well by adopting the lifting beam screwing-in and screwing-out method of the clamping groove 110, the quick connection and separation of the drill rod 40 and the sleeve 10 to be well is realized, the whole device is simple in processing and using operation, and the cost is saved.

The specific work flow of the quick lifting device for the well sleeve comprises that a second-level or third-level well sleeve 10 to be lifted is placed in a lower hole of the well sleeve 10, two clamping grooves 110 at the upper part of the well sleeve 10 to be lifted are respectively I, II arranged at a wellhead, at the moment, threads of a lifting pup joint 20 are well connected with a drill rod 40, the drill rod 40 is pulled up, two ends of a lifting beam 30 are aligned with the clamping grooves 110 of the sleeve, two ends of the lifting beam 30 are respectively placed in a clamping groove I and a clamping groove II of the well sleeve 10 to be lifted, and the drill rod 40 is rotated to clamp two ends of the lifting beam 30 into clamping positioning parts 112 of the clamping grooves 110 of the well sleeve 10 to be lifted. Pulling up the drill rod 40 and the sleeve 10 to be lowered into the well, continuously adding the drill rod 40, lowering the sleeve 10 to be lowered into the well, loosening the drill rod 40, slowly lifting the drill rod 40, withdrawing the lifting beam 30 from the I and II clamping grooves 110 of the sleeve 10 to be lowered into the well, and lifting the drill rod 40 and the lifting pup joint 20 out of the well.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A quick lifting device for a casing in a well, characterized in that it comprises: a lifting subsection (20), the top of which is connected to a drill pipe (40), and a lifting beam (30) is horizontally arranged on the lifting subsection (20); With the axis of the casing (10) to be lowered into the well as the center of symmetry, two clamping grooves (110) are symmetrically arranged on the wall of the casing (10) to be lowered into the well, and the clamping grooves (110) include mutually connected extension parts and clamping positioning parts, and the extension parts extend downward from the top of the wall of the casing (10) to be lowered into the well, and the extension direction of the clamping positioning part forms a clamping angle with the extension direction of the extension part, so that when the lifting beam (30) is guided downward by the extension part to move to its bottom, the lifting beam (30) is driven into the clamping positioning part by the rotation of the drill pipe, thereby realizing the connection between the casing (10) to be lowered into the well and the drill pipe (40). 2. The quick-lifting device for casing to be lowered into a well according to claim 1, characterized in that the clamping groove (110) is located on the inner side of the wall of the casing (10) to be lowered into the well; Or the clamping groove (110) is arranged to penetrate the wall of the casing (10) to be lowered into the well. 3. The device for quickly pulling the casing down into the well according to claim 1 is characterized in that the extending direction of the extending portion is parallel to the axis of the casing (10) to be lowered into the well. 4. The device for quickly pulling a casing down a well according to claim 1 is characterized in that the extension portion extends obliquely downward along the wall of the casing (10) to be lowered into the well. 5. The device for quickly pulling a casing down a well according to claim 1 is characterized in that the extending direction of the clamping and positioning portion is the circumferential direction of the casing (10) to be lowered into the well where the bottom of the extending portion is located. 6. The device for quickly pulling the casing down into the well according to claim 5 is characterized in that a limiting portion extending toward the top of the casing (10) to be lowered into the well is provided at one end of the clamping positioning portion away from the extending portion. 7. The device for quickly pulling the casing down into the well according to claim 1 is characterized in that the extending direction of the clamping and positioning portion is from the bottom of the extending portion to the top of the casing (10) to be lowered into the well. 8. The quick lifting device for casing going down into a well according to claim 1, characterized in that the lifting beam (30) and the lifting short section (20) form a ┴-shaped structure or a ┼-shaped structure. 9. The quick lifting device for casing going down into a well according to claim 1 is characterized in that a rib plate (50) is provided between the lifting beam (30) and the lifting short section (20), and two adjacent side walls of the rib plate (50) are respectively connected to the outer wall of the lifting beam (30) and the outer wall of the lifting short section (20). 10. The quick lifting device for the casing in a well according to claim 1, characterized in that the top of the lifting sub (20) is connected to the bottom of the drill pipe (40) through a variable thread joint.