CN113445946A - Large-diameter life-saving hole buried drilling treatment method - Google Patents
Large-diameter life-saving hole buried drilling treatment method Download PDFInfo
- Publication number
- CN113445946A CN113445946A CN202110885226.4A CN202110885226A CN113445946A CN 113445946 A CN113445946 A CN 113445946A CN 202110885226 A CN202110885226 A CN 202110885226A CN 113445946 A CN113445946 A CN 113445946A
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- China
- Prior art keywords
- slag
- hole
- discharge pipe
- drill rod
- pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005553 drilling Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000002893 slag Substances 0.000 claims abstract description 56
- 239000002002 slurry Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000013049 sediment Substances 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000003672 processing method Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 4
- 230000002706 hydrostatic effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000009933 burial Methods 0.000 claims 7
- 239000003570 air Substances 0.000 description 21
- 239000000843 powder Substances 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B21/16—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using gaseous fluids
Abstract
The invention discloses a method for burying and drilling a large-diameter life-saving hole, wherein a hole is cut at a position 1m above a bottom opening of a slag discharge pipe, and a high-pressure rubber pipe joint is welded at the position of the cut hole; the slag discharge pipe and the high-pressure rubber pipe are arranged in the annular space between the buried drilling tool and the drilled hole and are positioned above the silt surface; a drill rod is put into the position above the silting surface, and the upper opening of the drill rod is connected to a slurry pump; starting an air compressor to supply air and discharge slag, and starting a slurry pump to pump slurry into the hole to stir sediment after 5 minutes to form a water flow stirring area; when the slag is discharged by compressed air, the drill rod, the slag discharge pipe and the high-pressure rubber pipe are slowly lowered at the same time, and the bottom opening of the slag discharge pipe is always higher than that of the drill rod; at intervals, trying to lift the buried drill tool, and repeating the steps until the buried drill tool can be pulled; according to the method for burying and drilling the large-diameter life-saving hole, the drill rod is arranged for stirring the drilling slag at the bottom of the hole to form a disturbance area, and the slag is discharged through the slag discharge pipe, so that the capacity of the slag discharge pipe for carrying the drilling slag is effectively improved.
Description
Technical Field
The invention relates to the technical field of life-saving hole processes, in particular to a method for burying and drilling a large-diameter life-saving hole.
Background
In the process of drilling construction, buried drilling accidents are easy to happen due to collapse of a hole wall and the like, and the commonly used drilling accident treatment methods mainly comprise strong pulling of a drilling machine, milling and salvaging, back-off reverse thread salvaging and the like. The large-diameter life-saving hole drilling tool is heavy, the annular space gap between the drilling hole and the drilling tool is large, the rock powder accumulation amount above the drill bit is large after the drilling is buried, and the problem that the drilling machine cannot be solved by powerful pulling can not be solved; the construction of the life-saving hole must be efficient and rapid, and the adoption of the milling and fishing and the back-off reverse-thread fishing needs a lot of time and has limited effect, thus obviously not being applicable. Therefore, a treatment method capable of conveniently solving the problem of burying a large-diameter drill hole in a short time is needed.
The publication No. CN110905427A discloses a pneumatic processing device and method for buried drilling accidents in a drilling hole, wherein a relief control valve arranged on a slurry outlet pipe of a pressure cavity body is used for instantly relieving air, under the action of high pressure, a three-phase mixture formed by rock powder, water and air at the buried drilling position in the drilling hole flows outwards due to huge pressure difference, so that a drill rod is loosened, when the air flow is large enough, the mixture is sprayed out of the drilling hole through the slurry outlet pipe, and the drill rod is loosened through repeated operation, so that the buried drilling accidents are solved; the invention can not solve the accident of the large-diameter drill rod in a short time by repeatedly performing pneumatic operation until the drill rod is loosened.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to clear up out the drilling sediment of drilling rod top fast, solve the buried drilling accident.
In order to solve the technical problems, the invention provides the following technical scheme: a large-diameter life-saving hole burying processing method comprises the following steps:
s1, cutting a hole at a position 1m above the bottom opening of the slag discharging pipe, and welding a high-pressure rubber pipe joint at the position of the cut hole;
s2, putting the slag discharge pipe and the high-pressure rubber pipe which are manufactured according to the S1 into the annular space of the buried drilling tool and the drilled hole and locating above the silting surface;
s3, connecting the high-pressure rubber pipe to an air compressor, wherein the air pressure of the air compressor is greater than the hydrostatic pressure of slurry at the buried drill depth, and connecting the slag discharge pipe to a slag discharge pool;
s4, a drill rod is lowered to the position above the silt surface, and the upper opening of the drill rod is connected to a mud pump;
s5, starting an air compressor to supply air and discharge slag, and starting a mud pump to pump mud into the hole to stir sediment after 5 minutes to form a water flow stirring area;
s6, when slag is discharged by compressed air, the drill rod, the slag discharge pipe and the high-pressure rubber pipe are slowly lowered at the same time, and the bottom opening of the slag discharge pipe is always higher than that of the drill rod;
and S7, at intervals, trying to lift the buried drill tool, and repeating the steps until the buried drill tool can be pulled.
The advantages are that: slowly transfer simultaneously through drilling rod, scum pipe and high-pressure rubber tube, set up the drilling rod and be used for mixxing the hole bottom and bore the sediment, form the disturbance district to discharge the residue through the scum pipe, effectively improved the ability that the scum pipe carried the sediment of boring.
Preferably, a steel bar is welded at the bottom opening of the oil drain pipe.
Preferably, the deslagging pipe is an oil pipe with the diameter of 73 mm.
Preferably, the size of the high-pressure hose is phi 1 inch.
Preferably, the drill rod has a dimension of phi 50 mm.
Preferably, the bottom opening of the slag discharge pipe is 9m away from the fouling surface.
Preferably, the bottom opening of the drill rod is 1m away from the fouling surface.
Preferably, the bottom opening of the slag discharge pipe is at least 2m higher than the bottom opening of the drill rod.
Compared with the prior art, the invention has the beneficial effects that:
because the space between the drilling tool and the hole wall is limited, the pipe which is simple to manufacture and has a small diameter is used as a slag discharge pipe and a high-pressure rubber pipe for cleaning the buried drill slag, the pipe is easy to move up and down in the annular gap, and secondary hole accidents can not be caused;
meanwhile, a drill rod is put in and is specially used for stirring drilling slag at the bottom of the hole to form a disturbance area, so that the capacity of the slag discharge pipe for carrying the drilling slag is effectively improved;
the drill rod, the slag discharging pipe and the high-pressure rubber pipe are slowly arranged below the drill rod, the bottom opening of the slag discharging pipe is always ensured to be at least 2m higher than the bottom opening of the drill rod with the diameter of 50mm, and the slag discharging pipe is prevented from being blocked by too large drilling slag or large drilling slag;
the air pressure of the compressed air of the air compressor for deslagging is greater than the hydrostatic pressure of the slurry of the buried drill depth, and the slurry gas lift reverse circulation can be formed.
Drawings
Fig. 1 is a schematic diagram of the working state of the embodiment.
Detailed Description
In order to facilitate the understanding of the technical solutions of the present invention for those skilled in the art, the technical solutions of the present invention will be further described with reference to the drawings attached to the specification.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The embodiment discloses a large-diameter life-saving hole buried drill processing method, which comprises the following steps:
s1, cutting a hole 1m above the bottom opening of the slag discharge pipe 20, and welding a joint of the high-pressure rubber hose 30 at the cut hole;
s2, the slag discharge pipe 20 and the high-pressure rubber pipe 30 which are manufactured according to the S1 are put into the annular space of the buried drilling tool and the drilled hole and are positioned above the silt surface;
s3, connecting the high-pressure rubber pipe 30 to an air compressor, and connecting the slag discharge pipe 20 to a slag discharge pool;
s4, descending the drill rod 10 to the position above the silt surface, and connecting the upper opening of the drill rod 10 to a mud pump;
s5, starting an air compressor to supply air and discharge slag, and starting a mud pump to pump mud into the hole to stir sediment after 5 minutes to form a water flow stirring area;
s6, when slag is discharged by compressed air, the drill rod 10, the slag discharge pipe 20 and the high-pressure rubber pipe 30 are slowly lowered at the same time, and the bottom opening of the slag discharge pipe 20 is always higher than the bottom opening of the drill rod 10;
and S7, at intervals, trying to lift the buried drill tool, and repeating the steps until the buried drill tool can be pulled.
Taking the collapse accident of Shandong Pingyi gypsum mine as an example, when a 5# major diameter lifesaving hole phi 711mm air down-the-hole hammer is reversely and circularly drilled to the hole depth of 170.10m to prepare for up-down hole sweeping and sizing, the drilling tool cannot be lifted, the buried drilling accident occurs, the silting depth of the buried drill is measured by a measuring rope at the moment to be 152m, and the drilling slag of the buried drill needs to be cleaned, so that the accident can be solved.
Taking an oil pipe with the diameter of 73mm as a slag discharge pipe 20 on site, cutting a hole at a position 1m above a bottom opening, and welding a high-pressure rubber pipe 30 joint with the diameter of 1 inch at the position of the cut hole; simultaneously, a transverse reinforcing steel bar is welded at the bottom opening of the oil pipe, so that a hole can be blocked by large residues, and the situation that the oil discharge pipe is blocked due to the fact that the large residues enter the oil discharge pipe is prevented.
And (3) putting the processed slag discharging pipe 20 and the high-pressure rubber pipe 30 into the annular space between the buried drilling tool and the drilled hole, wherein the lower depth is 143m and is 9m away from a silting surface, and meanwhile, connecting the high-pressure rubber pipe 30 to an air compressor and connecting the slag discharging pipe 20 to a slag discharging pool.
Then, a drill rod 10 with the diameter of 50mm to a position of 151m away from the silt surface is put in, the drill rod is used for supplementing slurry in the hole and stirring bottom rock powder, and the upper opening of the drill rod 10 is connected to a slurry pump.
And then starting an air compressor to supply air and discharge slag, and starting a slurry pump to pump slurry into the hole to stir sediment after 5 minutes to form a water flow stirring area.
When the compressed air is used for deslagging, the drill rod 10, the deslagging pipe 20 and the high-pressure rubber pipe 30 are slowly lowered at the same time, and the fact that the bottom opening of the deslagging pipe 20 is at least 2m higher than the bottom opening of the drill rod 10 with the diameter of 50mm is always guaranteed.
At intervals, the buried drill tool is tried to be lifted up, and the process is repeated until the buried drill tool can be pulled.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
The above-mentioned embodiments only represent embodiments of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the concept of the present invention, and these embodiments are all within the protection scope of the present invention.
Claims (8)
1. A large-diameter life-saving hole buried drilling treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1, cutting a hole at a position 1m above the bottom opening of the slag discharge pipe (20), and welding a joint of the high-pressure rubber pipe (30) at the position of the cut hole;
s2, the slag discharge pipe (20) and the high-pressure rubber pipe (30) which are manufactured according to the S1 are put into the annular space of the buried drilling tool and the drilled hole and are positioned above the silting surface;
s3, connecting the high-pressure rubber pipe (30) to an air compressor, wherein the air pressure of the air compressor is greater than the mud hydrostatic pressure of the buried drill depth, and connecting the slag discharge pipe (20) to a slag discharge pool;
s4, a drill rod (10) is lowered to the position above a fouling surface, and the upper opening of the drill rod (10) is connected to a slurry pump;
s5, starting an air compressor to supply air and discharge slag, and starting a mud pump to pump mud into the hole to stir sediment after 5 minutes to form a water flow stirring area;
s6, when slag is discharged by compressed air, the drill rod (10), the slag discharge pipe (20) and the high-pressure rubber pipe (30) are slowly lowered at the same time, and the bottom opening of the slag discharge pipe (20) is always higher than that of the drill rod (10);
and S7, at intervals, trying to lift the buried drill tool, and repeating the steps until the buried drill tool can be pulled.
2. The large-diameter life-saving hole burial processing method according to claim 1, wherein: and a steel bar is welded at the bottom opening of the oil discharge pipe.
3. The large-diameter life-saving hole burial processing method according to claim 1, wherein: the slag discharge pipe (20) is an oil pipe with the diameter of phi 73 mm.
4. The large-diameter life-saving hole burial processing method according to claim 1, wherein: the size of the high-pressure rubber pipe (30) is phi 1 inch.
5. The large-diameter life-saving hole burial processing method according to claim 1, wherein: the size of the drill rod (10) is phi 50 mm.
6. The large-diameter life-saving hole burial processing method according to claim 1, wherein: in step S2, the bottom opening of the slag discharge pipe (20) is 9m away from the silt surface.
7. The large-diameter life-saving hole burial processing method according to claim 1, wherein: in step S4, the distance between the bottom opening of the drill rod (10) and the fouling surface is 1 m.
8. The large-diameter life-saving hole burial processing method according to claim 1, wherein: in step S6, the bottom opening of the slag discharging pipe (20) is at least 2m higher than the bottom opening of the drill rod (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110885226.4A CN113445946A (en) | 2021-08-03 | 2021-08-03 | Large-diameter life-saving hole buried drilling treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110885226.4A CN113445946A (en) | 2021-08-03 | 2021-08-03 | Large-diameter life-saving hole buried drilling treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113445946A true CN113445946A (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110885226.4A Pending CN113445946A (en) | 2021-08-03 | 2021-08-03 | Large-diameter life-saving hole buried drilling treatment method |
Country Status (1)
| Country | Link |
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| CN (1) | CN113445946A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343114A (en) * | 2014-10-15 | 2015-02-11 | 中冶天工上海十三冶建设有限公司 | Cast-in-situ bored pile constructing method for cleaning sediment by gas lift reverse circulation method |
-
2021
- 2021-08-03 CN CN202110885226.4A patent/CN113445946A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343114A (en) * | 2014-10-15 | 2015-02-11 | 中冶天工上海十三冶建设有限公司 | Cast-in-situ bored pile constructing method for cleaning sediment by gas lift reverse circulation method |
Non-Patent Citations (3)
| Title |
|---|
| 唐永志等: "复杂地质条件下大直径救生孔成孔关键技术与工艺", 《煤炭科学技术》 * |
| 杨涛等: "平邑石膏矿坍塌事故5号救生孔施工工艺及钻具配置", 《探矿工程》 * |
| 胡任华: "大口径钻孔桩垮孔埋钻事故处理方法", 《西部探矿工程》 * |
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| PB01 | Publication | ||
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Application publication date: 20210928 |