CN102606105A

CN102606105A - Casing extractor

Info

Publication number: CN102606105A
Application number: CN2012100992718A
Authority: CN
Inventors: 陈同汉
Original assignee: 孟钧
Priority date: 2012-04-08
Filing date: 2012-04-08
Publication date: 2012-07-25
Anticipated expiration: 2032-04-08
Also published as: CN102606105B

Abstract

The invention relates to a casing extractor. A rectangular tube (1a) is arranged in the middle of a center shaft (1), triangular tail fins (1b) are arranged on two sides of the lower end surface of the center shaft (1), gripper keys (2a) are arranged in a group of inclined holes on the wall of a gripper tube (2), a square hole is arranged on the lower portion of a rotating casing (4) and is in sliding fit with the rectangular tube (1a) of the center shaft, open grooves (4a) are arranged on two sides of the lower end of the rotating casing, and a tool (5) is hinged into each groove and can stretch outwards to cut a fractured drill casing along with rotation of a rotating casing. The casing extractor has the advantages that the drill casing can be firstly cut into small sections, a drill rod is lifted out in a sectioned manner, construction difficulty in reduced, extracting success rate is close to 100%, and the casing extractor can be widely applied to the situation that a drill casing is locked after fracture and cannot be extracted in deep-well drilling construction.

Description

The sleeve pipe extractor

Technical field

The present invention relates to a kind of drill bushing and take out withdrawing device, particularly a kind of sleeve pipe extractor that has cutting function.

Background technology

The drill bushing phenomenon of rupture in the geological drilling process, often occurs, the drill bushing taking-up with fracture reapposes new drill bushing and continues probing, not only can practice thrift cost, and operating efficiency also will significantly improve.Fracture drill bushing taking-up instrument is more at present, but all adopts the whole taking-up mode of the drill bushing that will rupture.But some drilling rods cause fracture drill bushing and taking-up instrument to be stuck and can't to take out because mistake is dark or resistance is bigger.

Summary of the invention

The object of the invention is exactly to have the shortcoming that the whole taking-up mode of fracture drill bushing exists now in order to solve, a kind of sleeve pipe extractor of proposition, and the drill bushing that will rupture earlier is divided into segment, and the fracture drill bushing that will be divided into segment then takes out out.

To achieve these goals, the present invention has adopted following technical scheme:

A kind of sleeve pipe extractor is characterized in that comprising:

A, hollow central axis, the central axis epimere is that cylindrical tube, stage casing are rectangular tube, the both sides, lower surface of rectangular tube are respectively equipped with a leg-of-mutton empennage;

B, card pipe, the card pipe orifice is slidingly matched with the central axis cylindrical tube, is provided with one group on the tube wall of card pipe and is tilted to inclined hole down, and each inclined hole is provided with one and blocks key, and the nose part that colludes that blocks key upwards stretches out outside the inclined hole;

C, turnbarrel; Its top is provided with circular hole and the central axis cylindrical tube is slidingly matched, the middle part is provided with cavity, the bottom is provided with square hole and the rectangular tube of central axis is slidingly matched, and both sides, turnbarrel bottom are respectively equipped with an open slot, the hinged cutter of difference in each open slot; The medial surface of cutter is provided with escape one; The medial surface of cutter and escape form with the leg-of-mutton empennage of rectangular tube end face and cooperate, and when empennage moved up, the inclined-plane of empennage cooperates with the medial surface of cutter outwards opened cutter; After empennage moved in the escape, cutter inwardly shrank;

D, hollow taper fairlead, taper fairlead lower end is provided with through hole, and taper fairlead upper end is connected with the turnbarrel lower end.

On the basis of technique scheme, following further technical scheme can also be arranged:

Be provided with plane bearing between card pipe box tube and the turnbarrel.The central axis upper end is provided with external screw thread and is connected cooperation with drilling rod, and the cylindrical tube of central axis epimere is provided with up-small and down-big tapering, and when central axis upwards promoted, this tapering formed tight fit with card pipe and turnbarrel.

The invention has the advantages that:

When taking out drill bushing, can earlier drill bushing be cut into segment, segmentation proposes drill bushing, and reduction difficulty of construction, taking-up success rate are close to 100%, can be widely used in the occasion that locking can't be taken out after the drill bushing fracture in the deep drilling exploration construction.

Description of drawings:

Fig. 1 is a structure chart of the present invention;

Fig. 2 is A-A sectional view of Fig. 1;

Fig. 3 is B-B sectional view of Fig. 1;

Fig. 4 is that the C of Fig. 1 is to view;

Fig. 5 is the stereogram of central axis empennage of the present invention;

Fig. 6 is the user mode figure of cutter of the present invention when opening;

Fig. 7 is cutter of the present invention user mode figure when shrinking.

Concrete aforesaid way:

As shown in Figure 1, a kind of sleeve pipe extractor provided by the invention comprises following ingredient:

A, hollow central axis 1, central axis 1 epimere are that the cylindrical tube, the end that have tapering is provided with external screw thread 1c and can be connected with drilling rod, and central axis 1 stage casing is rectangular tube 1a, and is as shown in Figure 3.The both sides, lower surface of rectangular tube 1a are respectively equipped with a leg-of-mutton empennage 1b, and like Fig. 1, shown in Figure 5, empennage 1b can adopt welding manner to be connected with rectangular tube 1a, also can directly adopt the wire cutting processing to form rectangular tube 1a.

B, card pipe 2; Card pipe 2 endoporus are slidingly matched with the cylindrical tube that central axis 1 has tapering, and card is managed one group (present embodiment is four) inclined hole under being tilted to is set on 2 the tube wall, and each inclined hole is provided with a card key 2a that can be slidingly matched; The nose part angle of colluding of card key 2a is greatly also upwards stretched out outside the inclined hole; So that can be lowered in the pipe smoothly, when last carrying, collude point and can catch on tube wall immediately, stopping means is arranged at this key top simultaneously, colludes sharp wedging tube wall and must not surpass 1mm.According to different rig situation, can break or interrupt colluding point in case of necessity, with smooth proposition extractor, in order to avoid reproduce accident in the pore-forming.

The cylindrical tube that c, turnbarrel 4, its top are provided with circular hole and central axis 1 is slidingly matched, the middle part is provided with the rectangular tube 1a that a section cavity 4c, bottom is provided with square hole and central axis and is slidingly matched their cooperation situation such as Fig. 2, shown in Figure 3.

Referring to Fig. 1, Fig. 4; Both sides, turnbarrel 4 bottom are respectively equipped with an open slot 4a; Connect the cutter 5 that can swing certain angle with pivot pin 5b respectively among each open slot 4a, cutter 5 lower ends are provided with outside cutting edge, and the medial surface of cutter 5 is provided with escape 5a one; Can find out that by Fig. 1 the medial surface of cutter 5 and escape 5a form with the leg-of-mutton empennage 1b of rectangular tube 1a end face and cooperate.Referring to Fig. 6, when empennage 1b moved up, the inclined-plane of empennage 1b cooperates with the medial surface of cutter 5 outwards opened cutter 5; Referring to Fig. 7, after empennage 1b moved among the escape 5a, cutter 5 inwardly shrank;

D, hollow taper fairlead 6, taper fairlead 6 lower ends are provided with through hole 6a, and taper fairlead 6 upper ends are connected with turnbarrel 4 lower ends.

In addition, between card pipe box tube 2 and turnbarrel 4, be provided with plane bearing 3.Central axis 1 upper end is provided with external screw thread 1c and is connected cooperation with drilling rod, and the cylindrical tube of central axis 1 epimere is provided with up-small and down-big tapering, and when central axis upwards promoted, this tapering formed tight fit with card pipe 2 and turnbarrel 4, so that they are promoted out.

The course of work of the present invention is following:

Central axis 1 end external screw thread with take out drilling rod and be connected after, be deep into the drill bushing place of fracture, carry central axis on a little can make the card key block drill bushing voluntarily.The turn on pump circulation of card jail back makes the drill bushing revolution, carries on while turn round, and at this moment cutter 5 is outwards upheld under the promotion of empennage 1b, and the rotation of turnbarrel 4 cuts the drill bushing that ruptures, and when empennage 1b rose to the precalculated position, the drill bushing that ruptures promptly was cut off.Continue upwards to carry along with taking out drilling rod, the drill bushing that can will rupture proposes, and success rate is close to 100%.

Claims

1. sleeve pipe extractor is characterized in that comprising:

A, hollow central axis (1), central axis (1) epimere is that cylindrical tube, stage casing are rectangular tube (1a), the both sides, lower surface of rectangular tube (1a) are respectively equipped with a leg-of-mutton empennage (1b);

B, card pipe (2), card pipe (2) endoporus is slidingly matched with central axis (1) cylindrical tube, is provided with one group on the tube wall of card pipe (2) and is tilted to inclined hole down, and each inclined hole is provided with one and blocks key (2a), and the nose part that colludes that blocks key (2a) upwards stretches out outside the inclined hole;

C, turnbarrel (4); Its top is provided with circular hole and central axis (1) cylindrical tube is slidingly matched, the middle part is provided with cavity (4c), the bottom is provided with square hole and central axis rectangular tube (1a) is slidingly matched; Turnbarrel (4) both sides, bottom are respectively equipped with an open slot (4a); A difference hinged cutter (5) in each open slot (4a), the medial surface of cutter (5) is provided with one escape (5a), and the medial surface of cutter (5) and escape (5a) form with the leg-of-mutton empennage of rectangular tube (1a) end face (1b) and cooperate; When empennage (1b) when moving up; The inclined-plane of empennage (1b) cooperates with the medial surface of cutter (5) outwards opens cutter (5), and after empennage (1b) moved in the escape (5a), cutter (5) inwardly shrank;

D, hollow taper fairlead (6), its upper end is connected with turnbarrel (4) lower end, and taper fairlead (6) lower end is provided with through hole (6a).

2. sleeve pipe extractor according to claim 1 is characterized in that being provided with plane bearing (3) between card pipe (2) and the turnbarrel (4).

3. sleeve pipe extractor according to claim 1 and 2; It is characterized in that central axis (1) upper end is provided with external screw thread (1c) and is connected cooperation with drilling rod; The cylindrical tube of central axis (1) epimere is provided with up-small and down-big tapering; When central axis upwards promoted, this tapering formed tight fit with card pipe (2) and turnbarrel (4).