CN211549571U - Down-the-hole hammer pipe-following drilling tool - Google Patents
Down-the-hole hammer pipe-following drilling tool Download PDFInfo
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- CN211549571U CN211549571U CN201921945867.9U CN201921945867U CN211549571U CN 211549571 U CN211549571 U CN 211549571U CN 201921945867 U CN201921945867 U CN 201921945867U CN 211549571 U CN211549571 U CN 211549571U
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- drill bit
- impacter
- sleeve
- hole hammer
- pipe
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Abstract
The utility model provides a down-the-hole hammer is with pipe drilling tool, belongs to drilling tool technical field, can solve current complicated geological structure area and complicated stratum, the buried drill that easily appears collapsing, fall the block sticking of drill, the problem of stifled hole or being difficult to the pore-forming, including interior drill bit, outer drill bit, the adapter sleeve, the impacter, sleeve pipe and drilling rod, interior drill bit is located the adapter sleeve, impacter and drilling rod are located the sleeve pipe, the one end and the one end of impacter of drilling rod are connected, the one end and the one end of interior drill bit of impacter are connected, outer drill bit passes through the jump ring with the adapter sleeve and is connected, the one end and the sheathed tube one end of adapter sleeve pipe are connected, the surface of interior drill bit is equipped with a plurality of spouts, and the middle part of spout is equipped with. Through using the utility model discloses, pore-forming efficiency improves, meets complicated structure area complex stratum, and the sleeve pipe is followed up, plays good dado effect, collapses to bury and bores, falls a calorie of brill, stifled hole or be difficult to difficult problems such as pore-forming and obtain solving.
Description
Technical Field
The utility model belongs to the technical field of the drilling tool, concretely relates to down-the-hole hammer is with pipe drilling tool.
Background
In the drilling construction process of a coal bed gas well, the problems of collapse, buried drilling, block falling, drilling clamping, hole plugging or difficult hole forming and the like are easily caused by the fact that complex geological structure zones such as pebble beds, faults, goafs and serious leakage layers and complex strata are sometimes encountered.
The conventional drilling technology of the coal bed gas well adopted at present has the defects of serious slurry loss, high difficulty in slurry leakage stoppage, high consumption of slurry materials and high leakage stoppage cost when a complex stratum with a complex structure is formed, and even individual holes cannot be formed and are discarded.
The most widely used pipe-following drilling technology in China is a pneumatic down-the-hole hammer pipe-following drilling technology which can be divided into a pneumatic down-the-hole hammer eccentric pipe-following drilling technology and a pneumatic down-the-hole hammer concentric pipe-following drilling technology, is mainly applied to stratums such as a quaternary oval gravel layer, a slope layer, a quicksand layer and the like, and is a very effective one-time drilling technology. But is limited by factors such as loose stratum structure, large pipe following resistance and the like, and is often used for drilling complex surface soil stratum within 80 m.
Disclosure of Invention
The utility model discloses to current complicated geological structure area and complicated stratum, the problem that the buried drill that easily appears collapsing, fall a calorie of brill, plugged hole or be difficult to the pore-forming provides a down-the-hole hammer with pipe drilling tool.
The utility model adopts the following technical scheme:
the utility model provides a down-the-hole hammer is with pipe drilling tool, includes interior drill bit, outer drill bit, adapter sleeve, impacter, sleeve pipe and drilling rod, and interior drill bit is located the adapter sleeve, and impacter and drilling rod are located the sleeve pipe, and the one end of drilling rod is connected with the one end of impacter, and the one end of impacter is connected with the one end of interior drill bit, and outer drill bit passes through the jump ring with the adapter sleeve to be connected, and the one end and the sheathed tube one end of adapter sleeve are connected, the surface of interior drill bit is equipped with a plurality of spouts, and middle part one side of spout is equipped with the recess, and the inner wall middle part of outer drill.
The quantity of the spout is three, arranges along the surface of interior drill bit equidistant.
The number of the splines is three, and the splines are arranged at equal intervals along the inner wall of the outer drill bit.
The length of the sleeve is less than that of the drill rod.
And a nozzle is arranged at the bottom of the inner drill bit.
The utility model has the advantages as follows:
1. through using the utility model discloses, drilling efficiency improves, has reduced one at least and has carried the brill and one time down the sleeve pipe time.
2. Through using the utility model discloses, pore-forming efficiency improves, meets complicated structure area complex stratum, and the sleeve pipe is followed up, plays good dado effect, collapses to bury and bores, falls a calorie of brill, stifled hole or be difficult to difficult problems such as pore-forming and obtain solving.
3. Through using the utility model discloses, reduce construction cost, meet complicated structure area complex stratum, the down-the-hole hammer is no matter what medium is used, all saves a large amount of lost circulation material expenses than conventional mud drilling.
4. Through using the utility model discloses, the construction range becomes wide, by original special solution fourth system complex stratum, extends to the deep stratum, and application field widens.
Drawings
Fig. 1 is a schematic structural view of the present invention;
wherein: 1-an inner drill bit; 2-an outer drill bit; 3-connecting sleeves; 4-splines; 5-a groove; 6-an impactor; 7-a sleeve; 8-a drill pipe; 9-a chute; 10-nozzle.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in the figure, a down-the-hole hammer is with pipe drilling tool, including interior drill bit 1, outer drill bit 2, adapter sleeve 3, impacter 6, sleeve pipe 7 and drilling rod 8, interior drill bit 1 is located adapter sleeve 3, impacter 6 and drilling rod 8 are located sleeve pipe 7, and the one end of drilling rod 8 is connected with the one end of impacter 6, and the one end of impacter 6 is connected with the one end of interior drill bit 1, and outer drill bit 2 passes through the jump ring with adapter sleeve 3 and is connected, and the one end of adapter sleeve 3 is connected with the one end of sleeve pipe 7, the surface of interior drill bit 1 is equipped with a plurality of spouts 9, and middle part one side of spout 9 is equipped with recess 5, and the inner wall middle part of outer drill bit 2 is equipped with a plurality of splines 4 that match with.
The number of the sliding grooves 9 is three, and the sliding grooves are arranged at equal intervals along the surface of the inner drill bit 1.
The number of the splines 4 is three, and the splines are arranged at equal intervals along the inner wall of the outer drill bit 2.
The length of the casing 7 is less than the length of the drill rod 8.
The bottom of the inner drill bit 1 is provided with a nozzle 10.
Wherein the connection between the inner drill bit 1, the impactor 6 and the drill rod 8 is a threaded connection.
The connecting sleeve 3 and the sleeve 7 are connected by flat buckle threads and then welded.
The groove 5 is a rectangular groove.
The fluid sprayed by the nozzle 10 of the inner drill bit 1 carries out rock debris and rock dust through the annular space of the chute 9, the drill rod 8 and the casing 7 and the annular space of the drill rod 8 and the stratum.
The working principle of the utility model is as follows:
in the drilling construction process, when a complex geological structure with a complex stratum is encountered and a hole is difficult to form, the thickness of the complex geological structure is judged in advance, a sleeve 7 with reasonable length is selected, after the outer drill bit 2 and the connecting sleeve 3 are connected through the snap spring, the connecting sleeve 3 and the sleeve 7 are connected through the flat buckle threads and welded, the sleeve is put into a drill hole, and the tail of the sleeve 7 is fixed at the position of the hole opening.
The drilling machine starts, slowly enters the inner drill bit 1, the impacter 6 and the drill rod 8 in threaded connection, penetrates through the sleeve 7, slowly slides the chute 9 of the inner drill bit 1 over the spline 4 in the outer drill bit 2 when entering the connecting sleeve 3, and rotates the inner drill bit 1 clockwise, so that the groove 5 on one side of the chute 9 of the inner drill bit covers the spline 4, the inner drill bit 1 drives the outer drill bit 2 to rotate, and the connecting sleeve 3 and the sleeve 7 are fixed under the action of the clamp spring.
After the inner drill bit 1 clamps the outer drill bit 2, the fixing device at the tail of the wellhead casing is released, and a single drill bit is connected until the drill bit penetrates through a complex geological structure and a complex stratum, so that the problem of difficult hole forming can be effectively solved. The drill bit is then withdrawn, counter-clockwise reversing the direction by a small angle to allow the inner drill bit 1, the impactor 6 and the drill rod 8 to exit.
Claims (5)
1. The utility model provides a down-the-hole hammer is with pipe drilling tool which characterized in that: comprises an inner drill bit (1), an outer drill bit (2), a connecting sleeve (3), an impactor (6), a sleeve (7) and a drill rod (8), wherein the inner drill bit (1) is positioned in the connecting sleeve (3), the impactor (6) and the drill rod (8) are positioned in the sleeve (7), one end of the drill rod (8) is connected with one end of the impactor (6), one end of the impactor (6) is connected with one end of the inner drill bit (1), the outer drill bit (2) is connected with the connecting sleeve (3) through a snap spring, one end of the connecting sleeve (3) is connected with one end of the sleeve (7), the outer surface of the inner drill bit (1) is provided with a plurality of sliding grooves (9), one side of the middle of each sliding groove (9) is provided with a groove (5), the inner wall of the outer drill bit (2) is provided with a plurality of splines (4) matched with the grooves (5), and the inner drill bit (1) and the outer drill bit (2) are connected through the splines (4) and the grooves (5).
2. A down-the-hole hammer casing drill as claimed in claim 1, wherein: the number of the sliding grooves (9) is three, and the sliding grooves are arranged at equal intervals along the surface of the inner drill bit (1).
3. A down-the-hole hammer casing drill as claimed in claim 1, wherein: the number of the splines (4) is three, and the splines are arranged at equal intervals along the inner wall of the outer drill bit (2).
4. A down-the-hole hammer casing drill as claimed in claim 1, wherein: the length of the casing (7) is less than that of the drill rod (8).
5. A down-the-hole hammer casing drill as claimed in claim 1, wherein: the bottom of the inner drill bit (1) is provided with a nozzle (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945867.9U CN211549571U (en) | 2019-11-12 | 2019-11-12 | Down-the-hole hammer pipe-following drilling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921945867.9U CN211549571U (en) | 2019-11-12 | 2019-11-12 | Down-the-hole hammer pipe-following drilling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211549571U true CN211549571U (en) | 2020-09-22 |
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ID=72500286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921945867.9U Active CN211549571U (en) | 2019-11-12 | 2019-11-12 | Down-the-hole hammer pipe-following drilling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211549571U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187394A (en) * | 2021-05-21 | 2021-07-30 | 四川宝鑫建设有限公司 | Front sand rear rock geological inclined angle steel sleeve drilling system and installation method thereof |
| CN114251053A (en) * | 2021-12-14 | 2022-03-29 | 中国地质科学院勘探技术研究所 | Drill bit for casing drilling |
-
2019
- 2019-11-12 CN CN201921945867.9U patent/CN211549571U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113187394A (en) * | 2021-05-21 | 2021-07-30 | 四川宝鑫建设有限公司 | Front sand rear rock geological inclined angle steel sleeve drilling system and installation method thereof |
| CN114251053A (en) * | 2021-12-14 | 2022-03-29 | 中国地质科学院勘探技术研究所 | Drill bit for casing drilling |
| CN114251053B (en) * | 2021-12-14 | 2023-09-26 | 中国地质科学院勘探技术研究所 | Drill bit for casing drilling |
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