CN204782796U - A downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming - Google Patents
A downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming Download PDFInfo
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- CN204782796U CN204782796U CN201520258328.3U CN201520258328U CN204782796U CN 204782796 U CN204782796 U CN 204782796U CN 201520258328 U CN201520258328 U CN 201520258328U CN 204782796 U CN204782796 U CN 204782796U
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- drilling rod
- drilling
- major diameter
- slag
- hole
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Abstract
The utility model relates to a downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming, the drilling rod top is the unit head in its structure, has a mouth of a river for the drill bit bottom, is equipped with a sediment section of thick bamboo that is curved by the spiral pipe at drilling rod outside cover, and sediment section of thick bamboo upper end is uncovered, and the lower extreme bottom is sealed, and it has the slag notch to lie in to open on the drilling rod of sediment section of thick bamboo top. The utility model discloses move down from ground " slag notch " for can be in the anti - technology construction of circulating of downthehole formation, solved in the basement rock crushed zone that mud is seriously missed, the major diameter engineering shaft of normally reverse circulation drilling becomes the well problem of being under construction.
Description
Technical field
The utility model relates to a kind of drilling rig, and particularly reverse circulating drilling tool device in a kind of hole being applicable to adopt mechanical boring method drilling construction in basement rock zone of fracture stratum, belongs to mine and municipal engineering construction technical field.
Background technology
In vertical shaft for mine engineering construction, the mechanical boring method of many employings coordinates mud circulation liquid drilling and forming hole, and according to drilling equipment type, pore-forming mode can be divided into one-step pore-creating or classification reaming Cheng Jing, and mud circulation mode can be divided into direct circulation or reacting cycle.For major diameter or super-large diameter engineering vertical shaft, the reacting cycle deslagging technique that adopts removes sediment at the bottom of boring mud or hole more.During drilling and forming hole; if there is crack in stratum; often there will be a large amount of losses of mud circulation liquid; generally take to throw as material pulping leak stopping such as stalk, straw, sawdust, laterite, swell soil, soda ash, polyacrylamides in hole; but when there is larger crack or zone of fracture; or when being communicated with solution cavity and goaf; above method does not often reach the effect of leak stopping; liquid level in hole is caused to decline; gaslift sinking can not be met than requiring; normally cannot adopt reverse circulation drilling, and then cause engineering cannot continue to implement.For this reason, reverse circulating drilling tool device in the hole finding a kind of major diameter vertical shaft machinery boring method drilling construction, be applicable to drilling and forming hole in the serious stratum of slurries seepage such as basement rock zone of fracture, to solving mud loss in hole, liquid level decline cause can not a reacting cycle deslagging drilling construction difficult problem, there is positive effect.
Summary of the invention
The purpose of this utility model is to provide a kind of for reverse circulating drilling tool device in the hole of major diameter shaft pore-forming, for there is the drilling and forming hole construction of the serious major diameter engineering vertical shaft of zone of fracture, spillage in stratum.
The technical scheme in the invention for solving the technical problem is such:
A kind of for reverse circulating drilling tool device in the hole of major diameter shaft pore-forming, in its structure, drilling rod top is unit head, be drill bit bottom, the slag depositing cylinder curved by helix tube is set with outside drilling rod, slag depositing cylinder upper end is uncovered, sealed bottom, and drilling rod is positioned at the center of slag depositing cylinder, be referred to as slag depositing cylinder drilling rod, the drilling rod above slag depositing cylinder has slag notch.
When using this drilling rig, the position of cinder notch drilling rod in hole is determined according to the height stablizing mud liquid level in hole, more piece slag depositing cylinder drilling rod can be connected according to rig hoisting power, namely more piece slag depositing cylinder drilling rod can be linked together as required, top connects common drilling rod again, coxopodite drilling rod connects drill bit, utilizes crane in hole, transfer drilling tool to requiring the degree of depth; By the flange connections round iron plate barrier drilling rod internal channel of slag notch drilling rod and the common drilling rod of upper joint, guarantee that boring mud no longer up passes through, directly discharge smoothly from slag notch; According to mud liquid level Metacentre Height in actual drilling depth and hole, determine the setting position of bellows chamber, make it meet gaslift sinking ratio; Drilling tool is connected rig, opens air compressor machine, circulating mud starts to creep into.Boring mud to return out to slag notch through drilling rod with mud and enters slag depositing cylinder, and after slag depositing cylinder stores fully-jewelled slag, propose brill deslagging, what complete a circulation creeps into work.Again descend reverse circulating drilling tool device in discharge hole section by section, continue to creep into design attitude, complete boring.
The beneficial effect that the utility model obtains is: " slag notch " moved in hole from underground and meet gaslift sinking ratio, make to form reverse circular technique in hole, solve in basement rock zone of fracture mud severe leakage, the major diameter engineering vertical shaft of normal reverse circulation drilling can not become well construction.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
The implication of number in the figure representative is:
1, the mouth of a river 2, drill bit 3, bellows chamber 4, slag depositing cylinder 5, torsion pass circle 6, slag notch
7, baffle plate 8, drilling rod 9, airduct 10, unit head.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, a kind of for reverse circulating drilling tool device in the hole of major diameter shaft pore-forming, primarily of compositions such as drill bit 2, drilling rod 8, unit head 10, slag depositing cylinder 4, torsion pass circle 5, baffle plate 7, airducts 9.Adopt Flange joint between drilling rod, and use bolton.The outside that slag depositing cylinder 4 adopts that length is 6m, diameter is 1020mm, the thick helix tube for 10mm suit are welded on common drilling rod 8, and drilling rod is in slag depositing cylinder center, slag depositing cylinder 4 end, facilitates bolt to be connected with the drilling rod of distance respectively flange 1m suitable for reading, with the sealing of thick 10mm Plate Welding bottom slag depositing cylinder, slag depositing cylinder 4 upper end is uncovered and be provided with gripper shoe and be firmly welded on drilling rod.The drilling rod 8 be positioned at above slag depositing cylinder 4 has slag notch 6, the wide 160mm of slag notch, high 280mm, slag notch surrounding is welded with the vertical gusset of 6 pieces of high 600mm, wide 160mm, thick 30mm, the reinforcement torsion pass steel ring of outer surface cover diameter 800mm, high 600mm, thick 20mm, is firmly welded on drilling rod wall to strengthen drilling rod intensity.
For certain coal mine gas well engineering, be 2 mouthfuls of bore diameter 1200mm, design hole depth 320m.Adopt huge revolving rig one-step pore-creating gas lift reverse circulation technique deslagging.When holing to the 180m degree of depth, owing to there is unknown crack and tomography in stratum, boring starts a large amount of spillage.Successively take inert material leak stopping, the method process such as the leak stopping of laterite pulping, the leak stopping of high viscosity chemical slurry, direct circulation are crept into, whole-hole water injection mud, all do not obtain positive effect, spillage amount is about 150-200m
3/ h.Adopt directly to (the about 120m that adds water in hole
3/ h), creep into while add waterside, boring mud leaks from crack with current after abundant fragmentation, still cannot creep into when boring increases to 220knm to drill power head moment of torsion during 240m, inner hole deposition forms sediment and reaches 7m, creep into as continued and may cause bury drills, lock of tool drilling, now water level in borehole is 200m, cannot continue to adopt reverse circular technique to creep into.Concrete use the utility model construction sequence is as follows:
(1) adopt that large hydraulic slewing drilling machine AD-60 creeps into, the construction technology of gas lift reverse circulation deslagging, drilling rod adopts 35 chrome-molybdenum steel castings, single-unit length 8m, wall thickness 20mm, internal diameter 366mm, flange diameter 640mm, thick 40mm, connected by 12 10.9 grades of 42mm × 190mm bolts, be equipped with one, RHP825E type air compressor, MQ-150 type straddle truck one and other auxiliary equipment and carry out drilling construction.
(2) a joint drilling rod 8 is chosen, cut open the slag notch 6 of a 160mm × 280mm on its external wall, slag notch 6 surrounding is welded with 6 pieces of vertical gussets (high 600mm, wide 160mm, thick 30mm), outer surface cover one strengthens torsion pass steel ring 5(diameter 800mm, high 600mm, thick 20mm), be firmly welded on drilling rod to strengthen drilling rod intensity.
(3) in single-unit length be 8m drilling rod 8 on welding processing slag depositing cylinder 4, it is outer and make drilling rod 8 be in slag depositing cylinder 4 center that slag depositing cylinder 4 is enclosed within drilling rod 8, determines to make slag depositing cylinder 4 four cover according to rig hoisting power.
(4) position of cinder notch drilling rod in hole is determined according to the height stablizing mud liquid level in hole, calculate the drilling rod quantity in hole, with straddle truck assist rig little lifting drill bit 2, drilling rod connects section by section, successively lifting connects slag depositing cylinder 4 and slag notch drilling rod 6, common drilling rod 8, by slag notch drilling rod 6 and upper joint drilling rod flange connections round iron plate barrier drilling rod internal channel, guarantee that boring mud can be discharged smoothly from slag notch, transfer section by section in hole, drill bit is positioned at 240m place, below aperture.
(5) being 200m according to mud liquid level Metacentre Height in hole, determining that the setting position of bellows chamber 3 is 230m, meeting gaslift sinking than requiring.
(6) drilling rod is connected rig, open air compressor machine, circulating mud starts to creep into.Boring mud to return out to slag notch 6 through drilling rod with mud and enters slag depositing cylinder 4, forms reverse circulation drilling.
(7), after slag depositing cylinder 4 stores fully-jewelled slag, brill deslagging is proposed.
(8) again transfer drilling tool section by section, continue to creep into design attitude.
Claims (2)
1. one kind for reverse circulating drilling tool device in the hole of major diameter shaft pore-forming, drilling rod top is unit head (10), be drill bit (2) bottom, it is characterized in that being set with in drilling rod (8) outside the slag depositing cylinder (4) curved by helix tube, slag depositing cylinder (4) upper end is uncovered, lower end base seals, and is positioned on the drilling rod above slag depositing cylinder and has slag notch (6).
2. according to claim 1 for reverse circulating drilling tool device in the hole of major diameter shaft pore-forming, it is characterized in that more piece slag depositing cylinder drilling rod links together, top connects common drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258328.3U CN204782796U (en) | 2015-04-27 | 2015-04-27 | A downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520258328.3U CN204782796U (en) | 2015-04-27 | 2015-04-27 | A downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204782796U true CN204782796U (en) | 2015-11-18 |
Family
ID=54522865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520258328.3U Expired - Fee Related CN204782796U (en) | 2015-04-27 | 2015-04-27 | A downthehole anti - drilling tool device that circulates for major diameter shaft pore -forming |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204782796U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476764A (en) * | 2017-10-11 | 2017-12-15 | 上海长凯岩土工程有限公司 | A kind of Drilling by circulation rig cylinder bores |
-
2015
- 2015-04-27 CN CN201520258328.3U patent/CN204782796U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107476764A (en) * | 2017-10-11 | 2017-12-15 | 上海长凯岩土工程有限公司 | A kind of Drilling by circulation rig cylinder bores |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151118 Termination date: 20200427 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |