CN2075694U

CN2075694U - Centrifugal salvage device for drill tool

Info

Publication number: CN2075694U
Application number: CN 90218220
Authority: CN
Inventors: 冯建国
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-08-15
Filing date: 1990-08-15
Publication date: 1991-04-24

Abstract

The utility model discloses a salvage device for drilling and a drill tool, which is characterized in that on the inner circle on the lower part of the outer connecting tube, a joint is connected by screws. The inside of the groove on the upper side of the joint is fastened with a circular steel ring with a gap, and the steel ring is provided with a plurality of eccentric cards rotating around the steel ring. On the joint, the position corresponding to the lower part of each eccentric card is provided with a passable long groove, and the lower part of the joint is provided with an internal cone. The position on the inner circle of the outer connecting tube corresponding to the eccentric card is provided with an inner step. The utility model is used for the drilling tool positioned in the well when the accident of 'runaway of bit', ' breakage of drill rod', and' return buckling occur in the drilling progress of salvage drilling.

Description

Centrifugal salvage device for drill tool

The utility model relates to a kind of dart that is used for the drilling operation accident, and it includes an outer connecting pipe.

At present, the fisher that is adopted when " run and bore " of taking place in handling drilling process, " breaking of rod bar " and " returning " accident is pointed cone or bowl awl fisher.Pointed cone fisher head is coniform, its external surface is a screw thread, bowl awl fisher head is a hollow tubular, the inner headed face of hollow section is a screw thread, when carrying out the drilling tool salvaging, all the rigid screw-in of screw thread part of fisher head is salvaged drilling tool, make fisher be coupled to one, then drilling tool lifting is gone out well with salvaging drilling tool by rig.Adopt above-mentioned fisher,, then can not promote the instrument of taking out, will drive anti-car like this and pour out drilling rod, make accident treatment complicated when the particle size drilling tool is blocked by the borehole wall or drill bit and hole wall rock sintering together the time; Pointed cone, bowl awl fisher are salvaged drilling tool easily and are damaged, and when its screw thread partly is worn, then can not use, so application life are short, generally only can use several times.

The purpose of this utility model is to provide a kind of can catching to propose to be salvaged drilling tool in order to overcome above-mentioned the deficiencies in the prior art, can need not drive anti-car in the time can not mentioning by the salvaging drilling tool again can make fisher automatically and be salvaged the centrifugal fisher that drilling tool is separated, and long service life can avoid causing the accident in the wellhole complicated.

The purpose of this utility model can reach by following measure: the utility model includes an outer connecting pipe, it is characterized in that the joint that in the outer connecting pipe lower end, is threaded on the circle, at the circular steel loop of the fastening band breach of the groove at the joint top that is positioned at outer connecting pipe, the centrifugal card that several can rotate around it is housed on circular steel loop, and the interior circular diameter that centrifugal card is formed is bigger 1～3 millimeter than tool joint diameter; Offer with each corresponding section, centrifugal card bottom on joint and make its elongated slot that can pass through, with centrifugal card corresponding section step in is arranged on the circle in outer connecting pipe, there is a female cone joint lower end, and its best tapering is 20 °～60 °;

Fig. 1 is an assembling front view, and has made complete section;

Fig. 2 is circular steel loop front view and section sectional drawing;

Fig. 3 is centrifugal card front view;

Fig. 4 is the right view of Fig. 3;

Fig. 5 is the vertical view of Fig. 3;

Fig. 6 is a joint A-A sectional view;

Fig. 7 is the vertical view of Fig. 6;

Fig. 8 is the utility model working condition chart.

Following details are as follows to the utility model with reference to accompanying drawing (implementing outer): in Fig. 1,1 is outer connecting pipe, its lower end inner circle joint 2 that is threaded, fastening one circular steel loop 4 in the groove 7 at joint 2 tops, several are housed on steel loop 4 can be around the centrifugal card 3 of steel loop rotation, steel loop 4(Fig. 2) has a breach that is used to pack into centrifugal card on, at joint 2(Fig. 7) go up with each corresponding section, centrifugal card 3 bottom one elongated slot 8 that can pass through centrifugal card 3 bottoms is arranged respectively, make centrifugal card 3 can realize rotating, circle has step 5 in centrifugal card 3 corresponding sections in outer connecting pipe 1, there is a female cone that play the guiding role 6 joint 2 lower ends, and its best tapering is 20 °～60 °.When using the utility model to salvage drilling tool 10 (Fig. 8), outer connecting pipe 1 is G.I.H under external force, the interior circular diameter that centrifugal card is formed in the design is slightly larger than drilling rod latching connector 11 diameters, salvaged drilling tool 10 and under 6 guide effects of joint female cone, can be passed through centrifugal card 3 smoothly, after drilling rod latching connector 11 is passed through on centrifugal card 3 tops, drilling rod 10 will be by former eccentric direction off-centre, and centrifugal like this card 3 will block drilling rod latching connector 11 lower ends, and can promote the salvaging workpiece this moment; Motionless as if carrying, then continue the decline fisher, make centrifugal card 3 break away from drilling rod latching connectors 11 lower ends, start rig then and rise stubborn retaining, at this moment centrifugal card 3 is partial under centrifugal action in the outer connecting pipe 1 in the round platform rank 5, and is blocked, thereby fisher can be taken out.

The utility model has following advantage compared to existing technology:

1. can not damage when realizing salvaging function and be salvaged drilling tool;

2. salvaged drilling tool and carried when motionless when catching, need not drive anti-car and pour out drilling rod, can directly be proposed drilling rod;

3. owing to do not have strong wear so long service life.

Claims

1, a kind of probing dart, include an outer connecting pipe, it is characterized in that the joint that in the outer connecting pipe lower end, is threaded on the circle, at the circular steel loop of the fastening band breach of the groove at the joint top that is positioned at outer connecting pipe, the centrifugal card that several can rotate around it is housed on circular steel loop, and the interior circular diameter that centrifugal card is formed is than the big 1-3 millimeter of tool joint diameter; Offer with each corresponding section, centrifugal card bottom on joint and make its elongated slot that can pass through, there is a female cone joint lower end, with centrifugal card corresponding section step in is arranged on the circle in outer connecting pipe.

2,, it is characterized in that female cone best tapering in joint lower end is 20 °～60 ° by the described probing dart of claim 1.