CN205805469U - A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool - Google Patents

A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool Download PDF

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Publication number
CN205805469U
CN205805469U CN201620642930.1U CN201620642930U CN205805469U CN 205805469 U CN205805469 U CN 205805469U CN 201620642930 U CN201620642930 U CN 201620642930U CN 205805469 U CN205805469 U CN 205805469U
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coring
screw shaft
tube
unicom
transition
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陈宗涛
熊巍
吴昊
徐刚
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Hubei Engineering University
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Hubei Engineering University
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Abstract

A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool, at least include Lao Mao mechanism, rotate drive sub, transit joint, screw shaft, transition element, UNICOM's element, inner pipe joint, inner tube, outer tube, reamer and core bit, rotate drive sub epimere to be connected with drilling rod of coring, rotate drive sub stage casing to be connected with Lao Mao mechanism, rotate drive sub hypomere and be connected with outer tube;Lao Mao mechanism lower end is connected with transition element by transit joint, and transition element connects UNICOM's element;Screw shaft is arranged in UNICOM's element of hollow after being supported by a pair taper roll bearing and two bearing blocks, and the upper end of screw shaft is connected to inside joint simultaneously;The inside of UNICOM's element lower end leads to inner tube with single-pass element mounting after being connected, the outside of UNICOM's element lower end is connected with inner tube by inner pipe joint and big nut, and inner tube is sheathed within the outer tube, external pipe connection reamer and core bit.While this drilling tool ensures drilling efficiency, it is effectively improved core recovery.

Description

A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool
Technical field
This utility model is that the coring with local inverse circulation crept into for engineering fields such as mineral resources, oil well probings bores Tool, is specifically related to the wire line coring screw shaft formula coring with local inverse circulation drilling tool that the bad grounds such as a kind of loose crushing use.
Background technology
At present, countries in the world mineral resources are the most exhausted, and this is accomplished by, and drilling company is more economical, be more effectively carried out mineral products Development of resources.It is to be understood that the structure of stratum Mineral Resource, the situation such as trend, core drilling is maximally effective means.As brill Entering the important tool drilling tool in operation, its service behaviour directly influences creeps into the quality of operation, cost and efficiency.
In creeping into operation, it is frequently encountered by the bad grounds such as loose crushing, bores its coring when meeting this kind of bad ground the most tired Difficulty, common coring drilling method is difficult to high-quality and high-efficiency and takes required core, and when boring this kind of bad ground of chance, many employings are complete at present Local reverse-circulation drilling tool at the bottom of hole reacting cycle or jetting type hole creeps into coring, its drilling fluid loop when complete opening reverse circulating drilling tool creeps into Although beneficially core enters core barrel, but can rush when drilling fluid moves in outer tube with the annular gap of hole wall from the top down Pit wall, because of complete opening reacting cycle erosion core, in loose and broken formation, core recovery is the highest;At the bottom of jetting type hole, local is counter follows Although trepan has common reverse circulating advantage, it is also possible to overcome common reverse circulating defect, but by the way of jet Cause local reverse-circulation at the bottom of hole to need the high effluxvelocity of big pump pressure to be formed, and cause negative pressure appearance inconspicuous, at jet velocity Spend relatively low in the case of, reacting cycle weak effect, had a strong impact on core recovery, caused core recovery low, and multiple instead Circulation core drill is all to use to carry to drill through the heart, carries the lower brill of brill and wastes time many, and the rotating hours is few, and drilling efficiency is low.
Summary of the invention
Problem to be solved in the utility model is, for the bad ground drilling tool coring such as existing loose crushing exist upper State deficiency, it is provided that a kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool, this drilling tool combines wire line coring, spiral Blade and two-tube single action reacting cycle operation principle, can play its local reverse-circulation advantage in drilling process, be effectively improved brill Enter efficiency and core recovery.
This utility model the technical scheme is that for solving above-mentioned technical problem
A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool, at least includes that Lao Mao mechanism, rotation driving connect Head, transit joint, screw shaft, transition element, UNICOM's element, inner pipe joint, inner tube, outer tube, reamer and core bit, institute State rotation drive sub and be divided into epimere, stage casing, three parts of hypomere from top to bottom, rotate drive sub epimere and core drilling rod even Connect, rotate drive sub stage casing and be connected with Lao Mao mechanism, rotate drive sub hypomere and be connected with outer tube;Described Lao Mao mechanism lower end Being connected with transition element by transit joint, transition element connects UNICOM's element;Described screw shaft passes through a pair taper roller Bearing and two bearing blocks are arranged in UNICOM's element of hollow after supporting, and the upper end of screw shaft is connected in joint simultaneously Portion;The inside of UNICOM's element lower end leads to inner tube with single-pass element mounting after threadeding, the outside of UNICOM's element lower end is by interior Pipe joint and big nut are connected with inner tube, and the lower end of inner tube is provided with jump ring, and inner tube is sheathed within the outer tube, external pipe connection reamer and Core bit.
By such scheme, described Lao Mao mechanism includes dragging for spearhead, inner sleeve, trocar sheath, spring and hinged bullet card, hinged bullet Blocking hinged with inner sleeve, spring housing is connected on inner sleeve, trocar sheath with drag for spearhead and hinged bullet card is connected, inner sleeve lower end sets In respect of the external screw thread for connecting with transit joint epimere, threaded with transit joint epimere in inner sleeve lower end.
By such scheme, described rotation drive sub epimere is provided with external screw thread, and drilling rod is connected with coring;Rotate drive sub Middle intrasegmental part has arc transition grooving, is connected with the hinged snap-fitting of Lao Mao mechanism;Rotate drive sub lower end and be provided with outer spiral shell Stricture of vagina, is connected with outer tube;Drilling rod of coring rotates under rig or alternate manner power drive, by rotating drive sub with hinged The cooperation of bullet card, drives Lao Mao mechanism to rotate together with transit joint.
By such scheme, described transit joint hypomere is designed with female thread, and transition element epimere is provided with external screw thread, and transition connects Head lower end is connected by the transition element epimere threaded engagement with hollow.
By such scheme, described screw shaft includes axle, square toes and helical blade, and helical blade is welded on axle, square toes Being arranged on the upper end of axle, transit joint is internally provided with square hole, and square hole is connected with the square toes of screw shaft.
By such scheme, the helical blade rotation direction on described screw shaft is dextrorotation with transit joint or drilling rod of coring Turn or rotate relevant counterclockwise: if transit joint rotates clockwise, then the rotation direction of helical blade is dextrorotation;If transit joint is inverse Hour hands rotate, then the rotation direction of helical blade is left-handed.
By such scheme, described taper roll bearing is arranged in the middle of bearing block, and bearing block periphery is provided with circular hole and waist Hole, circular hole and waist hole are as the reverse circulating passage of drilling fluid.
By such scheme, described transition element indoor design is hollow structure, and UNICOM's element is arranged in this hollow structure; Transition element two ends are provided with the groove for installing two thrust bearings of size, and low thrust bearing is arranged close to transit joint The groove of end, in the middle part of UNICOM's element, outside is provided with boss, high thrust bearing be arranged on boss and transition element away from In the groove of the end of transit joint, transition element is connected with UNICOM element by high thrust bearing.
It is respectively provided with some uniform through holes by such scheme, the end face of described transition element and the end face of UNICOM's element to make Passage for counterflush drilling liquid.
By such scheme, the inside of described UNICOM's element lower end arranges female thread and the outer spiral shell on single-pass element mounting excircle Stricture of vagina connects, and the inside of single-pass element mounting arranges an aperture and the diameter sealing ball slightly larger than this aperture.
Operation principle of the present utility model: when rig drives rope coring drill pipe, the rotation of rope coring drill pipe drives Rotate the rotation of drive sub, and rotate the drive sub hinged snap-fitting further through arc transition grooving Yu Lao Mao mechanism, So the rotation rotating drive sub drives again the rotation of Lao Mao mechanism, Lao Mao mechanism is joined with transit joint by screw thread lower end Close, so transit joint is also followed Lao Mao mechanism and rotated together.Transit joint is further through on its interior square hole and screw shaft Square toes coordinate, transit joint pass through to drive with square hole-square toes screw shaft and rope coring drill pipe synchronous rotary;Spiral Rotating shaft two ends are respectively arranged with taper roll bearing, for undertaking the axial force and radial force produced when screw shaft rotates;Circle Taper roller bearing is arranged on bearing block, and bearing block is distributed a lot of through hole, as the circulation passage of drilling fluid;Owing to spiral turns Being designed with helical blade on axle, the rotation of helical blade can drive flushing liquor motion from bottom to top, makes flushing liquor produce pressure reduction, Thus cause negative pressure, and in UNICOM's element lumen generation negative suction effect of hollow, by drilling fluid from inner tube, one end of UNICOM's element Suck, discharge from UNICOM's element other end, formed and rinse local reverse-circulation at the bottom of fluid apertures.
The reverse circulating drilling tool that this utility model is close with other is compared, and has the advantages that
1, on the basis of coring with local inverse circulation creeps at the bottom of hole, wire line coring it is capable of: multiple cord coring drill is all Being that direct circulation is crept into, though ensure that drilling efficiency, but being difficult to core recovery percentage requirement for loose and broken formation;Hole End coring with local inverse circulation drilling tool is to use to carry and drill through the heart the most mostly, although can improve core recovery percentage, but non-cutting time Being greatly increased, the rotating hours reduces, and drilling efficiency is low, and this utility model uses for reference wire line coring Lao Mao mechanism, and design rotation is driven Dynamic joint and transit joint, realize wire line coring on the basis of local reverse-circulation at the bottom of hole, be greatly improved the rotating hours, improves Drilling efficiency;
2, rotating drive sub design uniqueness, type of drive is different: rotation drive sub upper end is threaded connection cores Drilling rod, middle-end are coordinated by arc transition grooving with the bullet card of Lao Mao mechanism, lower end is crossed screw thread and is connected with outer tube, so rotate Drilling rod is rotated drive sub and rotates, and rotates drive sub and drives Lao Mao mechanism and outer tube to rotate, and Lao Mao mechanism drives transition Joint rotates, and transit joint drives screw shaft and transition element to rotate, under the effect of a pair thrust bearing, transition element and The rotation of screw shaft does not drive UNICOM's element to rotate together with inner tube, it is achieved the requirement of " two-tube single action ", thus protects rock The heart;
3, this drilling tool coordinates fisher use the inner tube carrying rock core can be salvaged by dragging for spearhead, combines rope Core, helical blade and two-tube single action reacting cycle operation principle, while ensureing drilling efficiency, be effectively improved again core and take Rate.
Accompanying drawing explanation
Fig. 1 is the plane assembling schematic diagram of this utility model wire line coring screw shaft formula coring with local inverse circulation drilling tool;
Fig. 2 is the planar explosive schematic diagram dragging for lance mechanism structure in Fig. 1;
Fig. 3 is the assembling schematic diagram dragging for lance mechanism structure in Fig. 1;
Fig. 4 is the axonometric drawing rotating drive sub in Fig. 1;
Fig. 5 is rotation drive sub internal structure cross-sectional schematic in Fig. 1;
Fig. 6 is the perspective view of screw shaft in Fig. 1;
In figure, 1-Lao Mao mechanism, 2-rotates drive sub, 3-transit joint, 4-screw shaft, 5-primary nut, and 6-is little to be pushed away Power bearing, 7-transition element, 8-bearing block, 9-high thrust bearing, 10-UNICOM element, 11-big nut, 12-taper roller axle Hold, 13-inner pipe joint, 14-single-pass element mounting, 15-sealing ball, 16-inner tube, 17-outer tube, 18-reamer, 19-jump ring, 20- Core bit, 41-square toes, 42-axle, 43-helical blade, 101-drags for spearhead, 102-inner sleeve, 103-trocar sheath, 104-spring, 105-hinged bullet card.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail.
Shown in reference Fig. 1, wire line coring screw shaft formula coring with local inverse circulation drilling tool described in the utility model, at least Including Lao Mao mechanism 1, rotate drive sub 2, transit joint 3, screw shaft 4, transition element 7, UNICOM's element 10, inner pipe joint 13, inner tube 16, outer tube 17, reamer 18 and core bit 20.
As shown in Fig. 2 ~ Fig. 3, Lao Mao mechanism 1 includes dragging for spearhead 101, inner sleeve 102, trocar sheath 103, spring 104 and hinge Connecing bullet card 105, hinged bullet card 105 is hinged with inner sleeve 102, and spring 104 is socketed on inner sleeve 102, trocar sheath 103 with drag for lance 101 and hinged bullet card 105 connect, inner sleeve 102 lower end threadeds with transit joint 3 epimere that (inner sleeve 102 lower end sets In respect of for and the external screw thread that connects of transit joint 3 epimere), transit joint 3 hypomere is designed with female thread, and on transition element 7 The external screw thread of section is connected, and transition element 7 connects UNICOM's element 10.
As shown in Fig. 4 ~ Fig. 5, rotating drive sub 2 and be divided into epimere, stage casing, three parts of hypomere from top to bottom, rotation is driven Dynamic joint 2 epimere is connected (external screw thread that epimere is provided with for and drilling rod of coring connects) with drilling rod of coring, and rotates drive sub 2 Stage casing is connected with the hinged bullet card 105 of Lao Mao mechanism 1 that (rotate that drive sub 2 stage casing indoor design has with Lao Mao mechanism 1 is hinged Bullet card 105 fit circular arc transition grooving, arc transition grooving rotate drive sub 2 rotate during can by with drag for lance The hinged bullet card 105 of mechanism 1 coordinates, and drives Lao Mao mechanism 1 to rotate), rotate drive sub 2 hypomere and be connected with inner tube that (hypomere sets External screw thread in respect of being connected with outer tube 17);After screw shaft 4 is supported by a pair taper roll bearing 12 and two bearing blocks 8 Being arranged in UNICOM's element 10 of hollow, the upper end of screw shaft 4 is connected to transit joint 3 inside simultaneously;UNICOM's element 10 The inside of lower end leads to inner tube 16 with single-pass element mounting 14 after threadeding, inner pipe joint is passed through in the outside of UNICOM's element 10 lower end 13 and big nut 11 be connected with inner tube 16, the lower end of inner tube 16 is provided with jump ring 19, and inner tube 16 is set in outer tube 17, outer tube 17 Connect reamer 18 and core bit 20.
As shown in Figure 6, screw shaft 4 includes axle 42, square toes 41 and helical blade 43, and helical blade 43 is welded on axle 42 On, square toes 41 are arranged on the upper end of axle 42, and transit joint 3 is internally provided with square hole, square toes 41 and this square hole be connected (when Rig drives rope coring drill pipe, rope coring drill pipe that drive sub 2 is rotated, rotation drive sub 2 drives Lao Mao mechanism 1, when Lao Mao mechanism 1 drives transit joint 3 to rotate, under square hole square toes 41 coordinate, the transit joint 3 of rotation drives screw shaft 4 in UNICOM's element 10 of hollow with rope coring drill pipe synchronous rotary, under the effect of helical blade 43, cause negative inhale existing As, it is achieved local reverse-circulation at the bottom of the hole of drilling fluid).Helical blade 43 rotation direction (left-handed, dextrorotation) on screw shaft 4 connects with transition 3 or rope coring drill pipe turns clockwise or rotates relevant counterclockwise: if transit joint 3 rotates clockwise, then spiral The rotation direction of blade 43 is dextrorotation;If transit joint 3 rotates counterclockwise, then the rotation direction of helical blade 43 is left-handed.
Taper roll bearing 12 is arranged in the middle of bearing block 8, and bearing block 8 periphery is provided with circular hole and waist hole, these circular holes With waist hole as the reverse circulating passage of drilling fluid.
Transit joint 3 is evenly arranged the radial hole of 4 ~ 6 a diameter of 8mm near hypomere female thread portion and (guides reacting cycle Drilling fluid enter inner and outer pipes annular space).
Transition element 7 indoor design is hollow structure, and UNICOM's element 10 is arranged in this hollow structure;Transition element 7 liang End is provided with the groove (two thrust bearings of size realize two-tube single action) for installing two thrust bearings of size, low thrust axle Holding the groove of 6 ends being arranged close to transit joint 3, in the middle part of UNICOM's element 10, outside is provided with boss, high thrust bearing 9 Being arranged in boss and the transition element 7 groove away from the end of transit joint 3, transition element 7 is by high thrust bearing 9 and connection Logical element 10 connects.The end face of transition element 7 and the end face of UNICOM's element 10 are respectively provided with some uniform manhole conducts The passage of counterflush drilling liquid.
The inside of UNICOM's element 10 lower end arranges female thread and is connected with the external screw thread on single-pass element mounting 14 excircle, single-pass The inside of element mounting 14 arranges an aperture and diameter and slightly larger than the aperture of the sealing ball 15(single-pass element mounting 14 of this aperture and stops Water polo 15 coordinates the single-pass effect realizing drilling fluid).
This utility model one wire line coring screw shaft formula coring with local inverse circulation drilling tool is in creeping into work process It is carried out as follows work:
Rig drives rope coring drill pipe to rotate, rope coring drill pipe is rotated drive sub 2 and rotates, and rotates driving and connects 2, by lower end external screw thread and outer tube 17 screw-internal thread fit, drive outer tube 17 and rope coring drill pipe synchronous rotary, and outer tube 17 carries Dynamic reamer 18 and core bit 20 synchronous rotary, it is achieved core-drilling;Rotate drive sub 2 by being arranged on arc transition Grooving coordinates with the hinged bullet card 105 of Lao Mao mechanism 1, drives the mistake being connected with Lao Mao mechanism 1 hypomere by internal and external threads Cross joint 3 to rotate;Being provided with square hole in transit joint, matched is the square toes 41 of screw shaft 4 one end, transit joint 3 Coordinated with square toes 41 by square hole, it is achieved transit joint 3 drives screw shaft 4 synchronous rotary;Screw shaft 4 is rolled by a pair circular cone Sub-bearing 12 supports, and taper roll bearing 12 is seated in pair of bearing 8 by this, screw shaft 4, taper roll bearing 12 and Bearing block 8 is installed in UNICOM's element 10 of hollow;It is threaded connection single-pass element mounting 14 in the lower end of UNICOM's element 10, Sealing ball 15 is coordinated to form ball valve, it is achieved the one-way conduction of drilling fluid;The lower end of transition element 7 is by high thrust bearing 9 and connection Logical element 10 connects, and the upper end of UNICOM's element 10 is connected with primary nut 5 by transition element 7, low thrust bearing 6, it is achieved two-tube The effect of single action, i.e. inner tube 16 and outer tube 17 this two-tube in, inner tube 16 does not rotates, and only outer tube 17 individually rotates.
Transit joint 3 coordinates drive screw shaft 4 to rotate in UNICOM's element 10, due to bearing block by square hole square toes 41 8, the through hole on UNICOM's element 10 arrange and screw shaft 4 on helical blade 43 act on, it is possible to drive drilling fluid from UNICOM unit The lower end of part 10 enters, upper end is flowed out, and produces negative suction effect.The rope coring drill pipe of revolution is passed through from the drilling fluid that slush pump is next Entering in the rotation drive sub 2 being connected with rope coring drill pipe, the annular clearance between transit joint 3 and outer tube 17 enters Enter inner tube 16 and annular clearance that outer tube 17 is formed goes directly core bit 20, bore through the mouth of a river rear portion of core bit 20 Well liquid can carry boring mud and enter the annular space that outer tube 17 is formed with hole wall, finally returns to earth's surface, and another part drilling fluid can be due to negative Inhale the existence of effect and enter inner tube 16 in company with core, on single-pass element mounting 14 and the ball valve of sealing ball 15 formation, bearing block 8 Through hole, screw shaft 4, the through hole on UNICOM's element 10, the through hole on transition element 7 and 4 ~ 6 footpaths of transit joint 3 lower end To the through hole of distribution, it is again introduced into inner tube 16 and in annular gap that outer tube 17 is formed, forms local reverse-circulation at the bottom of hole.At rock Core will be filled with core barrel and carries drilled dry a period of time before brill, by jump ring 19 card coring.
Use a kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool that this utility model is developed, permissible While ensureing rotating hours and drilling efficiency, it is achieved in loose crushing bad ground, high-effect high-quality takes core Target, improves and creeps into the technical-economic index that work produces.
Should be understood that above-described embodiment is merely to illustrate this utility model rather than limits scope of the present utility model.This Should be understood that outward after having read the content that this utility model is lectured, this utility model can be made each by those skilled in the art Planting and change or amendment, without deviating from the spirit and scope of technical solutions of the utility model, it all should be contained of the present utility model In right.

Claims (10)

1. a wire line coring screw shaft formula coring with local inverse circulation drilling tool, it is characterised in that: at least include Lao Mao mechanism, rotation Turn drive sub, transit joint, screw shaft, transition element, UNICOM's element, inner pipe joint, inner tube, outer tube, reamer and take Heart drill bit, described rotation drive sub is divided into epimere, stage casing, three parts of hypomere from top to bottom, rotate drive sub epimere with Drilling rod of coring connects, and rotates drive sub stage casing and is connected with Lao Mao mechanism, rotates drive sub hypomere and is connected with outer tube;Described drag for Lance mechanism lower end is connected with transition element by transit joint, and transition element connects UNICOM's element;Described screw shaft passes through one Being arranged in UNICOM's element of hollow after supporting taper roll bearing and two bearing blocks, the upper end of screw shaft is even simultaneously It is connected on inside joint;The inside of UNICOM's element lower end leads to inner tube with single-pass element mounting after threadeding, UNICOM's element lower end Outside is connected with inner tube by inner pipe joint and big nut, and the lower end of inner tube is provided with jump ring, and inner tube is sheathed within the outer tube, outer tube Connect reamer and core bit.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described Lao Mao mechanism includes dragging for spearhead, inner sleeve, trocar sheath, spring and hinged bullet card, and hinged bullet card is hinged with inner sleeve, and spring is socketed On inner sleeve, trocar sheath with drag for spearhead and hinged bullet card is connected, inner sleeve lower end be designed with for transit joint epimere The external screw thread connected, threadeds with transit joint epimere in inner sleeve lower end.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 2, it is characterised in that: described Rotating drive sub epimere and be provided with external screw thread, drilling rod is connected with coring;Rotate intrasegmental part in drive sub and have arc transition grooving, It is connected with the hinged snap-fitting of Lao Mao mechanism;Rotate drive sub lower end and be provided with external screw thread, be connected with outer tube;Drilling rod of coring exists Rotate under rig or alternate manner power drive, by rotating coordinating of drive sub and hinged bullet card, drive Lao Mao mechanism Rotate together with transit joint.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described Transit joint hypomere is designed with female thread, and transition element epimere is provided with external screw thread, and transit joint lower end is by the transition with hollow Element epimere threaded engagement connects.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described Screw shaft includes axle, square toes and helical blade, and helical blade is welded on axle, and square toes are arranged on the upper end of axle, and transition connects Head is internally provided with square hole, and square hole is connected with the square toes of screw shaft.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 5, it is characterised in that: described Helical blade rotation direction on screw shaft turns clockwise with transit joint or drilling rod of coring or rotates relevant counterclockwise: if Transit joint rotates clockwise, then the rotation direction of helical blade is dextrorotation;If transit joint rotates counterclockwise, then the rotation of helical blade To for left-handed.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described Taper roll bearing is arranged in the middle of bearing block, and bearing block periphery is provided with circular hole and waist hole, circular hole and waist hole as drilling fluid Reverse circulating passage.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described Transition element indoor design is hollow structure, and UNICOM's element is arranged in this hollow structure;Transition element two ends be provided with for Installing the groove of two thrust bearings of size, low thrust bearing is arranged close to the groove of the end of transit joint, unit of UNICOM In the middle part of part, outside is provided with boss, and high thrust bearing is arranged on boss and the transition element groove away from the end of transit joint In, transition element is connected with UNICOM element by high thrust bearing.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: described The end face of transition element and the end face of UNICOM's element are respectively provided with some uniform through holes passage as counterflush drilling liquid.
Wire line coring screw shaft formula coring with local inverse circulation drilling tool the most according to claim 1, it is characterised in that: institute State the inside of UNICOM's element lower end to arrange female thread and be connected with the external screw thread on single-pass element mounting excircle, single-pass element mounting interior Portion arranges an aperture and the diameter sealing ball slightly larger than this aperture.
CN201620642930.1U 2016-06-24 2016-06-24 A kind of wire line coring screw shaft formula coring with local inverse circulation drilling tool Active CN205805469U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219611A (en) * 2019-06-14 2019-09-10 山西晋煤集团技术研究院有限责任公司 A kind of combination of underground coal mine horizontal drilling core bit and its application method
CN112065313A (en) * 2020-10-09 2020-12-11 中国石油集团渤海钻探工程有限公司 Turbine negative pressure type local reverse circulation grinding and milling fishing tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110219611A (en) * 2019-06-14 2019-09-10 山西晋煤集团技术研究院有限责任公司 A kind of combination of underground coal mine horizontal drilling core bit and its application method
CN110219611B (en) * 2019-06-14 2021-02-05 山西晋煤集团技术研究院有限责任公司 Coal mine underground horizontal drilling core drill tool combination and use method thereof
CN112065313A (en) * 2020-10-09 2020-12-11 中国石油集团渤海钻探工程有限公司 Turbine negative pressure type local reverse circulation grinding and milling fishing tool
CN112065313B (en) * 2020-10-09 2021-11-23 中国石油集团渤海钻探工程有限公司 Turbine negative pressure type local reverse circulation grinding and milling fishing tool

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