CN2116081U

CN2116081U - Jet-type back recycle wire-line coring drilling tool

Info

Publication number: CN2116081U
Application number: CN 91224444
Authority: CN
Inventors: 张志忠
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-09-04
Filing date: 1991-09-04
Publication date: 1992-09-16

Abstract

Disclosed is a jet-type back recycle wire-line coring drilling tool which divides a mandrel to an upper section and a lower section, wherein, the upper section of the mandrel is provided with a nozzle, and the lower section of the mandrel is provided with a hollow throat in threaded connection. The flushing liquid is directly jetted to the hollow throat from the nozzle, and negative pressure is generated on the upper part of the hollow throat. The flushing liquid in the inner tube of the drilling tool is pumped to flow upwards for supporting and breaking a core which is in a suspension and loose state, footage per round trip is increased, and core recovery and efficiency per hour are increased. A spearhead penetrates through a pin via a shaft, and the bottom of the spearhead is milled to a flat top through a columnar pin. A spring fastening ring is additionally arranged on a furling sleeve which is butted without moving. The mandrel is provided with a detachable suspension ring, and thus the structure of the drilling tool is more advanced.

Description

Jet-type back recycle wire-line coring drilling tool

The utility model relates to the anti-cord coring drill that circulates of a kind of injecting type, belongs to geological exploration facility field, is used for creeping in the hole extraction rock core.

A kind of cord coring drill that patent 90210626.6 provides, the salvaging that has overcome general cord coring drill is broken off relations easily, interior pipe is gone up string, it is big that whole drilling tool more piece connects tolerance, the single action performance is bad, the governor motion heaviness, size is long, shortcomings such as weight is big, provide have simple in structure, effect flexibly, short and small light, the concentricity height, the single action performance is good, be convenient to dismounting, be easy to the drilling tool of advantages such as debugging, drag for spearhead location shakiness but also exist, it is moving that the gathering sleeve moves back the button string, shortcomings such as the suspension step is easy to wear, particularly this utility model is still the same with general cord coring drill, not solving broken rock creeps into rock core and easily stops up, footage per round trip is few, and core recovery percentage is low, shortcoming such as hour efficient is low.

The purpose of this utility model, provide a kind of broken cord coring drill that easily stops up the rock stratum that creeps into, it can alleviate the rock core obstruction, improve footage per round trip, alleviate core grinding, improve core recovery percentage, thereby also improve hour efficient, and this drilling tool also have drag for spearhead straight and upright, draw that sleeve is not gone here and there, the characteristics of replaceable hanging ring in.

By following measure, can realize the purpose of this utility model:

Is drill spindle mandrel, is divided into two sections, and intersegmental part is equipped with a nozzle on the mandrel, and intersegmental part is equipped with and holds spray apparatus, trunnion under the mandrel.Four inclined holes of flushing liquor on the mandrel epimere that creep into usefulness enter mandrel inside, and by nozzle, the trunnion in the spray apparatus is held in direct projection, overflow from diffusion chamber and inclined hole again, by the gap between interior pipe and the outer tube, wash landwaste, cooling drill bit down at the bottom of the hole.Flushing liquor is injected trunnion by nozzle, make in the trunnion upper end and form a negative pressuren zone, liquid in interior pipe, enter negative pressuren zone from passage, carried as side-arm flows to into trunnion, mixes with jet, flows at the bottom of diffusion chamber, inclined hole and even the hole, so circulation has constantly just formed from the local anti-circulation of flowing liquid that makes progress of interior pipe.

The advantage of the utility model drilling tool, when utilizing liquid in interior pipe, upwards to flow exactly, the power of lifting that produces, make broken rock core be the suspension loose condition (of surface), and with the broken rock core that creeps into continuous generation, smooth and easyly enter interior pipe unimpededly, difficult obstruction reduces wear, and then reaches and increase footage per round trip, improve core recovery percentage and improve the purpose of hour efficient.

Further specify the structure of the utility model drilling tool below by accompanying drawing:

Fig. 1 is the drilling tool upper part.

Fig. 2 is part under the drilling tool.

See that from accompanying drawing 1 dragging for spearhead 1 is in the top of mandrel epimere 10,, be fixed on and drag on the spearhead seat 6, and fix, in case this axle string is moving by little axle steady pin 3 by dragging for the little axle 2 of spearhead.To drag for spearhead straight and upright in order to make, and mills out a plane 14 dragging for spearhead 1 bottom, and the top is with cylindrical pin 4 on this plane, and pin 4 is to compress with spring 5.Can also see that from accompanying drawing mandrel epimere 10 also is equipped with and draws cover 7 in, fix with screw thread, not go here and there,, overlap one groove of 7 outer garden cars along drawing in, and in groove, load onto spring collar 9 at little axle 8 end face centers for making little axle 8 not move back button with drawing sleeve 8 in.In mandrel epimere 10, a chamber tube 17 is arranged, nozzle 13 wherein is housed, this nozzle 13 can be up and down in chamber tube 17.Nozzle 13 is positioned at the top, can abdicate the water inlet inclined hole of mandrel epimere 10, and nozzle is when the bottom, can coincide with catch 15 to seal.Can also see that from accompanying drawing 1 screw thread 18 is arranged at the bottom of mandrel epimere 10, in order to connect mandrel hypomere 19.At screw thread 18 places, also be equipped with hanging ring 11 with the level.So that after the step wearing and tearing, change hanging ring 11, prolong the life-span of mandrel.Can see that from accompanying drawing 2 hold in the tube 29 that spray apparatus 22 is contained in mandrel hypomere 19 tops, and trunnion 20 is contained in and holds 22 li of spray apparatus, mandrel hypomere 19 is drilled with inclined hole 21, logical diffusion chamber 30 this hole in, outer manage in logical 26 and outer tube 25 between the gap.Hold spray apparatus 22 outer gardens and mill into flat and mandrel hypomere 19, top tube 29 inwalls a gap 27 is arranged, again with mandrel hypomere 19, lower end endoporus 28 and in pipe 26 inside communicate.The flushing liquor that creeps into enters chamber tube 17 along solid arrow direction among the figure, and from nozzle 13 ejections, the trunnion 20 on the spray apparatus 22 is held in direct projection, enters diffusion chamber 30 downwards again, overflows from inclined hole 21.High velocity liquid stream is by trunnion 20, form a negative pressuren zone at trunnion 20 tops, make mandrel hypomere 19 lower end endoporus 28, liquid in the interior pipe 26 that is communicated with upwards flows along the dotted arrow direction, enter negative pressuren zone by the passage 27 that holds between spray apparatus 22 and mandrel hypomere 19 inwalls 29, suck trunnion 20, mix with injection stream, arrive at the bottom of diffusion chamber 30 and inclined hole 21 and even the hole, again by pipe 26 in entering at the bottom of the hole.Flushing liquor is circulation so constantly, be to form anti-circulation, so this drilling tool is called the anti-cord coring drill that circulates of injecting type.When avoiding throwing in drilling tool, liquid produces powerful buoyancy to drilling tool in the hole, causes decrease speed to slow down, liquid can hold up the nozzle 13 that is drilled with aperture, moves to chamber tube 17 tops, and this position nozzle 13 is abdicated four big inclined holes of mandrel epimere 10, make water unimpeded, to overcome the hole internal buoyancy.For making flushing liquor fully enter mandrel epimere 10, the garden is provided with O RunddichtringO 12 outside mandrel hypomere 19.

Claims

1, the anti-cord coring drill that circulates of a kind of injecting type is characterized by: the drilling tool mandrel is by the mandrel epimere 10 that nozzle 13 is housed and the mandrel hypomere 19 that holds spray apparatus 22 trunnions 20 is housed forms.

2, drilling tool according to claim 1, it is characterized by: mandrel epimere 10 links to each other with screw thread 18 with mandrel hypomere 19.

3, drilling tool according to claim 1, it is characterized by: nozzle 13 is to be contained in the mandrel epimere 10 chamber tubes 17, and can be up and down in chamber tube 17.

4, drilling tool according to claim 1, it is characterized by: hold spray apparatus 22 and be contained in the mandrel hypomere top tube 29, trunnion 20 is contained in and holds in the spray apparatus 22.

5, as drilling tool as described in claim 1 or 4, it is characterized by: mandrel hypomere 19 is outer to be drilled with inclined hole 21, interior logical diffusion chamber 30, outer logical in gap between pipe 26 and the outer tube 25.

6, as drilling tool as described in claim 1 or 4, it is characterized by: hold spray apparatus 22 outer gardens and mill into flatly, a gap 27 is arranged with mandrel hypomere 19 top tubes 29 inwalls, with mandrel hypomere 19 lower end endoporus 28 and in 26 inner linking to each other of pipe.

7, drilling tool according to claim 1 is characterized by:

A. plane 14 is milled in spearhead 1 bottom of dragging for that is contained on the mandrel epimere 10, and the top is with cylindrical pin 5;

B. draw cover 7 in gathering sleeve 8 is housed, the garden car has groove outside drawing cover 7 at axle 8 centers, and spring collar 9 is housed in groove.

8, drilling tool as claimed in claim 1 or 2 is characterized by: the hanging ring 11 of step in addition is housed at screw thread 18 places.