CN113236115A - Method for passing broken belt in through type air reverse circulation down-the-hole hammer drilling - Google Patents
Method for passing broken belt in through type air reverse circulation down-the-hole hammer drilling Download PDFInfo
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- CN113236115A CN113236115A CN202110715318.8A CN202110715318A CN113236115A CN 113236115 A CN113236115 A CN 113236115A CN 202110715318 A CN202110715318 A CN 202110715318A CN 113236115 A CN113236115 A CN 113236115A
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- drilling
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- crushing
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- 238000005553 drilling Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 12
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 230000002159 abnormal effect Effects 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000007689 inspection Methods 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000004568 cement Substances 0.000 claims description 17
- 239000002002 slurry Substances 0.000 claims description 15
- 238000002347 injection Methods 0.000 claims 2
- 239000007924 injection Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The method for passing through the broken belt in the drilling process of the through type air reverse circulation down-the-hole hammer comprises the following process steps: the method has the advantages that the judgment of the crushing belt, namely the slag discharge speed and the slag discharge amount are obviously increased, and the method is equivalent to 2 times of the normal discharge capacity; secondly, the air supply pressure of the whole drilling tool air supply system is obviously reduced to be less than or equal to 1/2 of the normal working pressure, the footage is obviously accelerated at the same time, and the drilling tool is judged to be a broken zone equivalent to 3-5 times of normal drilling; secondly, judging the thickness of the crushing zone, namely, obtaining the thickness h of the crushing zone by drilling footage meeting the condition of the step one, and performing treatment on the crushing zone, namely, enabling the crushing zone to be less than 2m in thickness and enabling a hole cleaning measure to be adopted for penetrating through the crushing zone; the thickness of the broken zone is more than 2m, and grouting, well cementation and wall protection are carried out; fourthly, after 7 days of detection and inspection after wall protection, namely cementing, trial drilling is carried out on a well section which is dried, the footage is controlled to be about 5m/min, and when the well enters an original crushing section, the nature of upward returning rock debris is observed; the main performance is that the broken zone rock is added with C30 concrete rock debris, the air pressure is normal, the slag discharge is normal, the drilling-through predicted well cementation section is not abnormal, and the drilling can be normally carried out.
Description
Technical Field
The invention relates to a down-the-hole hammer drilling method, in particular to a novel method for passing through a broken belt in the drilling process of a through type air reverse circulation down-the-hole hammer when the down-the-hole hammer is drilled in the broken belt.
Background
At present, in the drilling construction of the through-type air reverse circulation down-the-hole hammer, when a drill meets a broken zone, firstly, the drill quickly passes through the broken zone by the advantage of fast penetration of the through-type air reverse circulation down-the-hole hammer, but the broken zone of a thicker layer is difficult to pass through, and the drill is very easy to fall and block even if a thin layer passes through; and secondly, as air is used as a circulating medium, the wall protection effect is basically not provided, the drilling advantage can be displayed only in a relatively complete stratum and a relatively hard stratum, but the wall protection problem brought by the wall protection effect is very prominent, namely the well completion rate and the well completion efficiency of the through-type air reverse circulation down-the-hole hammer drilling technology in the prior art are low. Therefore, the research on a method for passing through a broken zone in the drilling of the through-type air reverse circulation down-the-hole hammer is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide a method for passing through a broken belt in drilling of a through-type air reverse circulation down-the-hole hammer.
The technical scheme for solving the technical problem is as follows:
the method for passing through the broken belt in the drilling process of the through type air reverse circulation down-the-hole hammer comprises the following process steps: the method has the advantages that the judgment of the crushing belt, namely the slag discharge speed and the slag discharge amount are obviously increased, and the method is equivalent to 2 times of the normal discharge capacity; secondly, the air supply pressure of the whole drilling tool air supply system is obviously reduced to be less than or equal to 1/2 of the normal working pressure, the footage is obviously accelerated at the same time, and the drilling tool is judged to be a broken zone equivalent to 3-5 times of normal drilling; secondly, judging the thickness of the crushing zone, namely, obtaining the thickness h of the crushing zone by drilling footage meeting the condition of the step one, and performing treatment on the crushing zone, namely, enabling the crushing zone to be less than 2m in thickness and enabling a hole cleaning measure to be adopted for penetrating through the crushing zone; the thickness of the broken zone is more than 2m, and grouting, well cementation and wall protection are carried out; fourthly, after 7 days of detection and inspection after wall protection, namely cementing, trial drilling is carried out on a well section which is dried, the footage is controlled to be about 5m/min, and when the well enters an original crushing section, the nature of upward returning rock debris is observed; the main performance is that the broken zone rock is added with C30 concrete rock debris, the air pressure is normal, the slag discharge is normal, the drilling-through predicted well cementation section is not abnormal, and the drilling can be normally carried out.
In a preferred embodiment of the present invention, the normal working pressure is 0.2 Mpa.
As a preferred scheme of the invention, the grouting well cementation retaining wall is to lower a drill rod to the depth of a top plate of a broken zone, and to inject enough qualified cement slurry by using a slurry pump, wherein the grouting depth is the depth h of the broken zone plus 3-5m, and after the grouting is finished, the used drill is usedThe drilling is cleaned, the drilling is restarted after waiting for 7 days, and the amount of cement paste is V ═ pi r2And (h +3-5 m).
As a preferred scheme of the invention, the grouting well cementation retaining wall is that a drill rod is lowered to the depth of a top plate of a broken zone, whether the broken zone is full of grouting is judged according to the fact that the pump pressure is obviously increased when the grouting surface exceeds the top plate of the broken zone, then grouting is additionally carried out for 3-5m, and the amount of cement paste is V-pi r2And (3-5 m).
In a preferred embodiment of the present invention, the cement slurry is a cement slurry made of cement with a temperature of above C30, and the slurry pump is a 600/30 or 1000/30 slurry pump.
Compared with the prior art, the invention has the following advantages:
1. the problem of the broken belt wall protection of the drilled broken belt can be solved to the maximum extent;
2. the problem of drill jamming caused by drilling a broken zone can be solved;
3. the well-forming period of air reverse circulation drilling can be shortened;
4. the drilling efficiency of the through type reverse circulation down-the-hole hammer can be greatly improved;
5. the drilling period of the through type air reverse circulation drill can be greatly reduced;
6. the water-rich zone aquifer is reminded so as to judge the aquifer in time and take measures in time.
In a word, the invention can greatly improve the well forming rate and the well forming efficiency of the through-type air reverse circulation down-the-hole hammer drilling technology.
Detailed Description
The method for passing through the broken belt in the drilling process of the through type air reverse circulation down-the-hole hammer comprises the following process steps: the method has the advantages that the judgment of the crushing belt, namely the slag discharge speed and the slag discharge amount are obviously increased, and the method is equivalent to 2 times of the normal discharge capacity; secondly, the air supply pressure of the whole drilling tool air supply system is obviously reduced to be less than or equal to 1/2 of the normal working pressure, the footage is obviously accelerated at the same time, and the drilling tool is judged to be a broken zone equivalent to 3-5 times of normal drilling; secondly, judging the thickness of the crushing zone, namely, obtaining the thickness h of the crushing zone by drilling footage meeting the condition of the step one, and performing treatment on the crushing zone, namely, enabling the crushing zone to be less than 2m in thickness and enabling a hole cleaning measure to be adopted for penetrating through the crushing zone; the thickness of the broken zone is more than 2m, and grouting, well cementation and wall protection are carried out; fourthly, after 7 days of detection and inspection after wall protection, namely cementing, trial drilling is carried out on a well section which is dried, the footage is controlled to be about 5m/min, and when the well enters an original crushing section, the nature of upward returning rock debris is observed; the main performance is that the broken zone rock is added with C30 concrete rock debris, the air pressure is normal, the slag discharge is normal, the drilling-through predicted well cementation section is not abnormal, and the drilling can be normally carried out.
The normal working pressure is 0.2 Mpa.
The grouting well cementation retaining wall is characterized in that a drill rod is lowered to the depth of a top plate of a crushing zone, qualified and sufficient cement slurry is injected by a slurry pump, the grouting depth is the depth h of the crushing zone plus 3-5m, a drilling tool is used for cleaning the drill after grouting is finished, the drill is restarted after the drilling tool waits for 7 days, and the amount of the cement slurry is V-pi r2And (h +3-5 m).
The grouting well cementation retaining wall is characterized in that a drill rod is lowered to the depth of a top plate of a crushing zone, whether grouting in the crushing zone is full is judged according to the fact that the pump pressure is obviously increased when a grouting surface exceeds the top plate of the crushing zone, then grouting is additionally carried out for 3-5m, and the amount of cement paste is V-pi r2And (3-5 m).
The cement slurry is prepared from cement above C30, and the mud pump is a 600/30 or 1000/30 mud pump.
Claims (5)
1. The method for passing through the broken belt in the drilling process of the through-type air reverse circulation down-the-hole hammer is characterized by comprising the following process steps: the method has the advantages that the judgment of the crushing belt, namely the slag discharge speed and the slag discharge amount are obviously increased, and the method is equivalent to 2 times of the normal discharge capacity; secondly, the air supply pressure of the whole drilling tool air supply system is obviously reduced to be less than or equal to 1/2 of the normal working pressure, the footage is obviously accelerated at the same time, and the drilling tool is judged to be a broken zone equivalent to 3-5 times of normal drilling; secondly, judging the thickness of the crushing zone, namely, obtaining the thickness h of the crushing zone by drilling footage meeting the condition of the step one, and performing treatment on the crushing zone, namely, enabling the crushing zone to be less than 2m in thickness and enabling a hole cleaning measure to be adopted for penetrating through the crushing zone; the thickness of the broken zone is more than 2m, and grouting, well cementation and wall protection are carried out; fourthly, after 7 days of detection and inspection after wall protection, namely cementing, trial drilling is carried out on a well section which is dried, the footage is controlled to be about 5m/min, and when the well enters an original crushing section, the nature of upward returning rock debris is observed; the main performance is that the broken zone rock is added with C30 concrete rock debris, the air pressure is normal, the slag discharge is normal, the drilling-through predicted well cementation section is not abnormal, and the drilling can be normally carried out.
2. A method of passing a breaker strip in the drilling of a through air reverse circulation down-the-hole hammer as claimed in claim 1, wherein said normal operating pressure is 0.2 Mpa.
3. The method for passing through the fractured zone in the drilling of the through-type air reverse circulation down-the-hole hammer according to claim 1, wherein the grouting well cementation retaining wall is to lower a drill rod to the depth of a top plate of the fractured zone, sufficient qualified cement slurry is injected by a slurry pump, the injection depth is the depth h of the fractured zone plus 3-5m, a drilling tool is used for cleaning the drill after the injection is finished, the drill is restarted after the cement is set for 7 days, and the amount of the cement slurry is V-pi r2And (h +3-5 m).
4. The method for passing through the crushing zone in the drilling process of the through-type air reverse circulation down-the-hole hammer according to claim 1, wherein the grouting well cementation retaining wall is to lower a drill rod to the top plate depth of the crushing zone, whether the crushing zone is full of grouting is judged according to the fact that the pump pressure is obviously increased when a grouting surface exceeds the top plate of the crushing zone, then grouting is additionally carried out for 3-5m, and the amount of cement paste is V-pi r2And (3-5 m).
5. A method of passing a breaker strip in the drilling of a through air reverse circulation down-the-hole hammer as claimed in claim 3 or claim 4 wherein the cement slurry is a slurry made of C30 or above cement and the mud pump is a 600/30 or 1000/30 mud pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110715318.8A CN113236115A (en) | 2021-06-27 | 2021-06-27 | Method for passing broken belt in through type air reverse circulation down-the-hole hammer drilling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110715318.8A CN113236115A (en) | 2021-06-27 | 2021-06-27 | Method for passing broken belt in through type air reverse circulation down-the-hole hammer drilling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113236115A true CN113236115A (en) | 2021-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110715318.8A Pending CN113236115A (en) | 2021-06-27 | 2021-06-27 | Method for passing broken belt in through type air reverse circulation down-the-hole hammer drilling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113236115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740725A (en) * | 2022-04-20 | 2022-07-12 | 中交投资南京有限公司 | Pressure data processing method and control method for through-type down-the-hole hammer and terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5243686A (en) * | 1986-01-16 | 1987-07-23 | Dresser Australia Pty. Ltd. | Downhole hammer with reverse circulation of flushing fluid |
| CN103089145A (en) * | 2013-02-06 | 2013-05-08 | 上海中联重科桩工机械有限公司 | Down-the-hole hammer power head of rotary drilling rig and rotary drilling rig |
| CN205154009U (en) * | 2015-12-03 | 2016-04-13 | 山河智能装备股份有限公司 | Anti - pneumatic downhole hammer of circulation digs rig soon |
| DK2295712T3 (en) * | 2009-07-31 | 2018-04-09 | Weatherford Tech Holdings Llc | ROTARY DRILL CONTROL DEVICE |
| CN107893628A (en) * | 2017-11-29 | 2018-04-10 | 河北天理环保科技有限公司 | Through Air Reverse Circulation down-hole hammer drilling technology |
| CN111075478A (en) * | 2019-11-25 | 2020-04-28 | 北京中煤矿山工程有限公司 | Pre-grouting reinforcement process for ground construction of broken belt of excavation working face structure |
| CN113236117A (en) * | 2021-05-18 | 2021-08-10 | 北京中煤矿山工程有限公司 | Southwest erosion formation shaft water prevention and control method for ground and underground combined grouting |
-
2021
- 2021-06-27 CN CN202110715318.8A patent/CN113236115A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU5243686A (en) * | 1986-01-16 | 1987-07-23 | Dresser Australia Pty. Ltd. | Downhole hammer with reverse circulation of flushing fluid |
| DK2295712T3 (en) * | 2009-07-31 | 2018-04-09 | Weatherford Tech Holdings Llc | ROTARY DRILL CONTROL DEVICE |
| CN103089145A (en) * | 2013-02-06 | 2013-05-08 | 上海中联重科桩工机械有限公司 | Down-the-hole hammer power head of rotary drilling rig and rotary drilling rig |
| CN205154009U (en) * | 2015-12-03 | 2016-04-13 | 山河智能装备股份有限公司 | Anti - pneumatic downhole hammer of circulation digs rig soon |
| CN107893628A (en) * | 2017-11-29 | 2018-04-10 | 河北天理环保科技有限公司 | Through Air Reverse Circulation down-hole hammer drilling technology |
| CN111075478A (en) * | 2019-11-25 | 2020-04-28 | 北京中煤矿山工程有限公司 | Pre-grouting reinforcement process for ground construction of broken belt of excavation working face structure |
| CN113236117A (en) * | 2021-05-18 | 2021-08-10 | 北京中煤矿山工程有限公司 | Southwest erosion formation shaft water prevention and control method for ground and underground combined grouting |
Non-Patent Citations (1)
| Title |
|---|
| 耿瑞伦: "《多工艺空气钻探》", 31 October 1995 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740725A (en) * | 2022-04-20 | 2022-07-12 | 中交投资南京有限公司 | Pressure data processing method and control method for through-type down-the-hole hammer and terminal |
| CN114740725B (en) * | 2022-04-20 | 2022-09-20 | 中交投资南京有限公司 | Pressure data processing method and control method for through-type down-the-hole hammer and terminal |
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Application publication date: 20210810 |