CN112983344A - Novel grouting drill rod and using method thereof - Google Patents
Novel grouting drill rod and using method thereof Download PDFInfo
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- CN112983344A CN112983344A CN201911307298.XA CN201911307298A CN112983344A CN 112983344 A CN112983344 A CN 112983344A CN 201911307298 A CN201911307298 A CN 201911307298A CN 112983344 A CN112983344 A CN 112983344A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000003825 pressing Methods 0.000 claims abstract description 59
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 238000005553 drilling Methods 0.000 claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 239000011440 grout Substances 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000004677 Nylon Substances 0.000 claims description 7
- 229920001778 nylon Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000003245 coal Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 239000003208 petroleum Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 238000010408 sweeping Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000005299 abrasion Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 9
- 238000007569 slipcasting Methods 0.000 description 8
- 239000002002 slurry Substances 0.000 description 7
- 206010017076 Fracture Diseases 0.000 description 5
- 210000003437 trachea Anatomy 0.000 description 5
- 230000007547 defect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
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- 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
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
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- 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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- 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
- E21B33/134—Bridging plugs
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- 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 invention relates to the technical field of grouting in drilling engineering, in particular to a novel grouting drill rod and a using method thereof. The device comprises a sealing rod head 1, a first-stage grouting drill rod 2, a second-stage grouting drill rod 3 and a third-stage grouting drill rod 4. A detachable grouting joint is arranged at the side part of the sealing rod head 1; a through hole is formed in the side part of the upper section of the primary grouting drill rod 2, and the air pressing pipe penetrates through the through hole and is installed on the buckle; and the inner air pressing pipe of the second-stage grouting drill rod 3 is connected through an inner buckle. The air pressing pipe of the third-stage grouting drill rod 4 is divided into two air pressing pipes, the air pressing pipe of the last section of drill rod is a single air pressing pipe, and the air bag is installed outside the drill rod through a clamping buckle; during engineering construction, a reasonable grouting mode is selected, grouting can be performed in a target hole section, and the problem of poor grouting effect during full-section grouting of drilling engineering is directly solved; during sectional grouting, the problems of continuous drilling and drilling-down caused by hole sweeping, new hole formation caused by hole sweeping and equipment depreciation and abrasion are solved; the engineering efficiency is improved, the construction cost is reduced, and the construction safety is guaranteed.
Description
Technical Field
The invention belongs to the technical field of grouting in drilling engineering, and particularly relates to a novel grouting drill rod and a using method thereof.
Background
More and more drilling projects are combined with grouting technology at present and are applied to plugging and reinforcing stratum fractures, such as stratum primary fractures, mine mining fractures, geological fracture zones, stratum soft rocks, weak strata under complex construction conditions and the like. When the stratum is grouted, the drill rods are required to be pulled out completely on the ground, and the drill rods are connected with a grouting pump pipeline from a wellhead to perform full-hole section grouting.
The problems of the existing drilling engineering stratum grouting are as follows:
1. when one-time full-section grouting is adopted at present, as the drilling engineering is large in hole and deep in hole depth, grouting slurry is difficult to judge at what hole section of a drilled hole to diffuse; during actual grouting, the diffusion of the grout in different hole sections of the drilled hole has larger difference, and the effect of primary full-section grouting is poor.
2. When sectional grouting is adopted, the grouting effect can be optimized, but after grouting, water is required to be pressed to remove cement in the holes, the vertical wells are easy to remove, and cement is easy to remain after grouting in hole tracks of horizontal wells, extended reach wells and the like; the actual construction shows that the water pressing time after grouting is not greatly related to the residual quantity of cement in the horizontal hole section, because the cement density is large and the inner diameter of a grouting pipe is originally smaller than the inner diameter of a drill rod, after the grout flows into the horizontal section, the lower part of the horizontal section hole gradually deposits due to the large cement density, the grout can continuously flow from the upper part of the horizontal section hole due to different apertures, the lower part continuously deposits, when water pressing is carried out after grouting, water can still flow along the upper space of the horizontal section hole, the deposited cement at the lower part still exists, and even if the water pressing is carried out for a long time, the water pressing can only be slightly washed away. Secondly, when a special complex stratum is encountered, for example, the designed track of the horizontal section of the drill hole is concave, more cement remains in the area after grouting. Therefore, hole sweeping operation is required after grouting.
(1) In general, after low-pressure grouting, the probability of new holes in the hole sweeping process is not high; grouting for a hole in a segmented mode for multiple times, and then, after the segmented grouting, putting a drill rod into the hole for multiple times to perform hole cleaning; the service life of the screw rod is consumed due to the hole sweeping with the screw rod, the screw rod is not needed to carry out operation when the hole is swept, and the screw rod needs to be installed by pulling out the drill after the hole is swept by the drilling, and then the drill is drilled again, so that the phenomenon of continuously and repeatedly pulling out and drilling the drill is caused; meanwhile, as the hole depth is continuously increased, the drilling tool is continuously lengthened, so that the time consumed by the drill tripping and the drill tripping in the process is gradually increased, and unnecessary manpower and material resources are wasted.
(2) After high-pressure grouting, new holes are easy to be produced during hole sweeping, and even if the hole is drilled and swept immediately after grouting and water pressing, the probability of producing the new holes is still high; the prior art method in China, for example, a conical hole-sweeping drill bit is adopted, the probability of producing a new hole during hole-sweeping operation can be reduced only to a certain extent, meanwhile, the cost is high, and the production cost of a drilling project is increased.
(3) After a new hole is drilled in the hole sweeping process, the drill rod is taken out completely, the mounting screw tries to return to the original track to sweep the hole continuously, cement is solidified gradually along with the increase of the drilling time during the pulling-out and drilling, the original track is difficult to return during the directional operation, and even if the original track is returned to sweep the hole continuously, the possibility of drilling the new hole is higher because the cement is hardened gradually. At the moment, drilling can be carried out only along the edge of the original track, so that the drilling amount during the segmented grouting of the drilling engineering is doubled or even more than doubled, the construction cost of the engineering is greatly increased, the physical strength and material waste of engineering personnel are increased, and equipment such as a drilling machine, a screw rod and the like is worn due to depreciation; and even increase the risk of drilling accidents.
Disclosure of Invention
In order to make up for the technical defects, the invention provides a novel grouting drill rod and a use method thereof. When the existing drilling engineering is used for grouting stratum fractures, a drilling tool can be used for grouting, so that the drilling and hole sweeping under the condition of tripping is avoided, and the engineering cost is reduced; the grouting effect can be optimized during sectional grouting, and the problem of waste of various projects caused by hole sweeping after grouting is directly solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a novel grouting drill rod comprises a sealing rod head, a first-stage grouting drill rod, a second-stage grouting drill rod and a third-stage grouting drill rod; the lower part of the sealing rod head is provided with threads to be connected with a first-stage grouting rod, a first-stage grouting drill rod is connected with a second-stage grouting drill rod, the second-stage grouting drill rod is connected with a third-stage grouting drill rod, one first-stage grouting drill rod is provided, and a plurality of second-stage grouting drill rods and third-stage grouting drill rods are provided; and the construction is carried out by adopting a corresponding grouting mode.
Preferably, the upper part of the sealing rod head is provided with a pressure gauge, and the side part is provided with a detachable grouting joint.
Preferably, the lateral part of the upper section of the one-stage grouting drill rod is provided with a through hole, a sealing ring is installed on the through hole, meanwhile, the upper part and the lower part of the inner wall of the drill rod are respectively welded with a buckle, and the air pressing pipe penetrates through the through hole and is installed on the buckle.
Preferably, the air pressing pipe is a high-pressure pipe and is clamped on a buckle inside the one-stage grouting drill rod, the air pressing pipe can slide up and down on the buckle, the length of the air pressing pipe is equal to that of the drill rod, and two ends of the air pressing pipe are connected through an inner buckle.
Preferably, the inner buckle comprises a tail portion of an inner air pipe of a previous-stage grouting drill rod and a top portion of an inner air pipe of a next-stage grouting drill, a metal external thread is machined at the tail portion of the previous-stage air pipe, the diameter of the metal external thread is larger than that of the buckle, metal is machined at the top portion of the next-stage air pipe, a rotatable inner buckle ring is machined, and an internal thread is machined in the inner buckle ring.
Preferably, the buckles are welded at the upper end and the lower end of the inner wall of the second-stage grouting drill rod, the internal air pressing pipe is clamped on the buckles and can slide up and down, and the two ends of the air pressing pipe are connected through the inner buckles.
Preferably, a through hole is formed in the front end of the three-stage grouting drill rod, blunt blocks are welded to the outer side of the through hole and the rear end of the drill rod, and buckles are welded to the front end and the rear end of the inner wall; the air pressing pipe is arranged on the inner buckle, the front end of the air pressing pipe is divided into two air pressing pipes by one, one air pressing pipe penetrates through the through hole of the drill rod and then is connected with the air bag sealing air inlet arranged outside, the other air pressing pipe is arranged on the buckle at the rear end and simultaneously is connected with the air pressing pipe at the front end of the next grouting drill rod through the inner buckle, the inner wall of the front section of the last three-stage grouting drill rod is welded with a buckle, the air pressing pipe is a single pipe and is not forked, and the air pressing pipe is arranged on the buckle at the front end and is; the middle part of one side of the air bag is provided with strip-shaped wear-resistant rubber, nylon buckles are arranged at the two long sides of the air bag, a sealing air inlet corresponding to a through hole of the three-stage grouting drill rod is processed at the other side of the air bag, and the air bag is arranged outside the drill rod through a buckle; and one of the clamping buckles is arranged on the outer side of the front end through hole, and the other clamping buckle is arranged on the outer side of the rear end blunt block.
Preferably, the grouting mode comprises forward grouting and backward grouting.
The invention has the following beneficial effects:
the problems of undefined grouting and poor grouting effect in the whole grouting process of the conventional drilling engineering are solved. During sectional grouting, the problems of continuous drilling and drilling, new hole formation during hole sweeping and equipment depreciation and abrasion are caused. The engineering efficiency is improved, the construction cost is reduced, the investment of manpower and material resources is reduced, and the construction safety is further guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention
FIG. 2 is a schematic view of a sealing rod head according to the present invention
FIG. 3 is a schematic view of a one-stage grouting drill rod structure of the present invention
FIG. 4 is a schematic view of the structure of the two-stage grouting drill rod of the present invention
FIG. 5 is a schematic structural view of a three-stage grouting drill rod of the invention
FIG. 6 is a schematic view of the internal fastener structure of the drill rod of the present invention
FIG. 7 is a schematic view of the connecting inner buckle structure of the air compressing tube of the present invention
FIG. 8 is a schematic view of the structure of the bladder of the present invention
FIG. 9 is a schematic view of a clip structure of the present invention
In the figure: 1-sealing rod head, 2-first-stage grouting drill rod, 3-second-stage grouting drill rod, 4-third-stage grouting drill rod, 5-grouting joint, 6-air pressing pipe, 7-buckle, 8-internal buckle, 9-clamp buckle and 10-air bag
Detailed Description
The terms "first," "second," and the like in the description and in the claims and in the drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises" and "comprising," as well as any variations thereof, are intended to cover a non-exclusive inclusion, such as a list of steps or elements. A method, system, article, or apparatus is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to such process, system, article, or apparatus. The invention will be further illustrated with reference to specific embodiments.
In order to make up for technical defects, the invention provides a novel grouting drill rod and a use method thereof, and the novel grouting drill rod comprises a sealing rod head 1, a first-stage grouting drill rod 2, a second-stage grouting drill rod 3 and a third-stage grouting drill rod 4; the lower part of the sealing rod head 1 is provided with threads to be connected with a first-stage grouting rod 2, the first-stage grouting drill rod 2 is connected with a second-stage grouting 3 drill rod, the second-stage grouting drill rod 3 is connected with a third-stage grouting drill rod 4, the first-stage grouting drill rod 2 is one, and the second-stage grouting drill rod 2 and the third-stage grouting drill rod 3 are multiple; and the construction is carried out by adopting a corresponding grouting mode.
As an implementation mode of the invention, the inner diameter and the outer diameter of the sealing rod head 1 are the same as those of a drill rod, the upper part is provided with a pressure gauge which can accurately read grouting pressure in time, the side part is provided with an internal threaded hole, one side of the grouting pipe joint is provided with an external thread which is hermetically arranged with the sealing rod head 1, and the other side of the grouting joint 5 is connected with the head of the grouting pipe.
As an embodiment of the invention, a through hole is processed at the upper section of the first-stage grouting drill rod 2, a sealing ring is arranged in the through hole, and the air pressing pipe 6 can directly penetrate out of the through hole to be connected with an air pump.
The air pressing pipe 6 is a high-pressure pipe and meets the upper limit value of the air pressure required to be injected in the engineering. The air pressing pipe 6 is clamped on a buckle 7 inside the one-level grouting drill rod 2 and can slide up and down on the buckle 7, the length of the air pressing pipe 6 is equal to that of the drill rod, and when a worker drills down, the air pressing pipe 6 leaking from the lower portion of the one-level grouting drill rod 2 is connected with the air pressing pipe 6 pulled out from the upper portion of the second-level grouting drill rod 3 through an inner buckle 8.
As an embodiment of the invention, the two-stage grouting drill rod 3 is internally welded with a buckle 7 and is provided with a gas compression pipe 6, the length of the gas compression pipe 6 is equal to that of the drill rod, and when drilling, workers connect the gas compression pipes 6 in the two-stage grouting drill rods 3 through the inner buckle 8.
As an embodiment of the invention, a through hole is processed at one side of the three-stage grouting drill rod 4, a sealing ring is installed in the through hole, buckles 7 are welded at two ends inside the drill rod, a branched air pressing pipe 6 is installed, the buckle 7 is welded on the inner wall of the front section of the last three-stage grouting drill rod 4, the air pressing pipe 6 is a single non-branched pipe, is installed on the buckle 7, and is connected with an air inlet sealed by an air bag 10 installed outside after penetrating out of the through hole of the drill rod; the length of the air pressing pipe 6 is equal to that of the drill rod, and when a worker drills down, the air pressing pipe 6 between the two-stage grouting drill rods 3 is connected through the inner buckle 8; and an airbag 10 is externally installed.
The air bag 10 is formed by processing and sealing two waterproof and air-permeable expansible pvc materials, the spreading area of the air bag 10 is more than or equal to the external area of the three-stage grouting drill rod 4, one surface of the air bag 10 is processed with a sealing air inlet, and the position of the air bag corresponds to the through hole of the three-stage grouting drill rod 4 and is connected with the air pressing pipe 6 penetrating out of the through hole of the drill rod; the middle part of the other side of the air bag 10 is processed with wear-resistant rubber.
The air bag 10 is made of a common elastic composite material of wear-resistant rubber, is the same as packer rubber used for oil and shale gas exploitation, and has extremely high wear resistance.
When the wear-resistant rubber side of the air bag 10 is installed, the air bag is aligned to the direction, namely, the side, provided with the wear-resistant rubber, of the third-stage grouting drill rod 4 is required to be arranged at the lower part of the horizontal section hole, and the wear-resistant rubber is ensured to protect the air bag 10 from being worn down by the third-stage drill rod and the hole wall when the air bag is drilled. And nylon tower buckles are processed on two long sides of the air bag 10, the air bag 10 is wrapped outside the drill rod to bond the nylon tower buckles tightly, and two ends of the nylon tower buckles are fastened tightly by using the clamping buckles 9.
The clamp 9 is provided with a screw hole, a screw is screwed into the clamp 9 through the screw hole during installation, and the clamp 9 tightly fixes the air bag 10 on the drill rod; and the rubber protection pad is arranged on the inner side of the clip 9, so that the air bag 10 is not damaged by the clip 9 after being installed; when the drill rod is drilled downwards, the rear end of the drill rod is firstly drilled downwards, the frictional resistance between the drill rod and the hole wall is large, and the front-end clamp 9 is arranged outside the blunt block at the front section of the three-stage grouting drill rod 4, so that the clamp 9 is prevented from sliding on the drill rod to block the through hole; the rear end clamping buckle 9 is arranged on the outer side of the blunt block at the rear end of the three-stage grouting drill rod 4, and damage caused by sliding of the rear end clamping buckle 9 on the drill rod is avoided.
As an embodiment of the invention, the first-stage grouting drill rod, the second-stage grouting drill rod and the third-stage grouting drill rod are all internal flush type drill rods, one first-stage grouting drill rod 2 is provided, and a plurality of second-stage grouting drill rods 3 are provided, which are specifically determined according to the length of the non-sealed hole section of the actual engineering. The number of the third-stage grouting drill rods 4 is multiple, and the third-stage grouting drill rods are determined according to the length of an actual engineering hole sealing section.
The position of the three-stage grouting drill rod 4 is a hole sealing area, and the length of the hole sealing area is between the length of a grouting hole section and the length of a bottom casing pipe and the length of a grouting hole section and the length of a wellhead, so that grout in the grouting area does not flow into a gap between the drill rod and the casing pipe in the non-hole sealing area during actual construction. And the front end and the rear end of the hole sealing area are provided with rubber separators which adopt standards used in petroleum, shale gas and coal bed gas engineering. In general, in a crack-free original stratum, if slurry needs to be injected, the grouting pressure needs to be larger than the stress of the original stratum, so that in actual construction, gas larger than the pressure of the stratum is filled into the expansion of the bag, the air bag expands in a closed space between the outer wall of the drill rod, the rubber separator and the bare hole wall, the pressure of the air bag and the hole wall is larger than the stress of the original stratum, and the slurry cannot flow into the joint of the air bag and the bare hole section hole wall. Taking the following parameters as an example, when the original formation stress is 8Mpa, the bladder 10 is pressurized with a gas of 8Mpa, preferably 12 Mpa.
As an embodiment of the present invention, the grouting method includes two methods:
advancing formula slip casting, specifically for after drilling a distance, tripping into, go into novel slip casting drilling rod down, gasbag 10 aerifys to design pressure, carries out the slip casting to the purpose hole section, carries out the pressurized water after the slip casting and replaces out the thick liquid in the drilling rod, trips out novel slip casting drilling rod, and the drilling continues to drill, repeats above-mentioned step, accomplishes whole drilling slip casting.
Retreating grouting, specifically drilling once, pulling out after drilling to the designed hole depth, after determining a grouting hole section, putting in a novel grouting drill rod, inflating an air bag 10 to the designed pressure, grouting, performing water pressing after grouting to replace grout in the drill rod, connecting a 6-port of a ground air pressing pipe into an air pump, completely discharging gas in the air bag 10, lifting to the next grouting hole section, and repeating the steps until grouting of the whole hole section is completed.
Example of the implementation
In the forward and backward grouting manner, the operation steps used in the present invention are the same during the actual operation, so that the depth of the hole of 1600m is taken as an example for description, and the depth of the casing of 800m is 1500-.
Step one, after drilling to a target hole section, selecting a grouting hole section, and taking out all drill rods in the hole.
And step two, the hole sealing area is 700m-1500m, and 800m is selected for description. Selecting the number of the three-stage grouting drill rods, connecting and installing the three-stage grouting drill rods, and then putting the three-stage grouting drill rods one by one; determining the direction when the drill rod is lowered, namely, one side of the three-stage grouting drill rod with the wear-resistant rubber is required to be positioned at the lower part of the horizontal section hole,
and step three, after the previous drill rod is put into the hole, the previous drill rod is clamped on the slips of the operating table, after the power head lifts the next drill rod, a worker connects and seals the air pressure pipes in the two sections of drill rods through the inner buckles, the drill rods are screwed up and put in, and the step is repeated continuously to put the drill rods in.
And step four, after the third-stage grouting drill rod is lowered, continuing to lower the second-stage grouting drill rod, and finally lowering and grouting the drill rods, wherein each drill rod is lowered strictly according to the direction until the drill rods are lowered to 1500 m.
And fifthly, clamping the primary grouting drill rod on a slip of a drilling machine operation table, screwing the sealing rod head up by using hydraulic pliers, screwing the grouting joint up, and connecting the grouting pipe.
And step six, connecting the leaked air compression pipe to the high-pressure air pump, and checking all the joints again. And (5) starting the high-pressure air pump, and stopping air compression when the pressure of the high-pressure air pump reaches 10Mpa and the hole sealing air pressure meets the condition.
And step seven, starting a grouting pump for grouting. And after grouting, pressing water to replace grout in the drill rod, connecting a ground air pressing pipe opening into an air pump, completely discharging gas in the air bag, lifting to the next grouting hole section, and repeating the steps until grouting of the whole hole section is completed. After grouting is finished, if a small amount of slurry is left in the drill rod in the horizontal section, the slurry is lifted out one by one to be placed in the vertical well section, water is flushed into the drill rod, and the residual trace slurry flows downwards; and after each section of drill rod is pulled out, the residual slurry in a single drill rod is checked and cleaned.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (13)
1. A novel grouting drill rod comprises a sealing rod head (1), a first-stage grouting drill rod (2), a second-stage grouting drill rod (3) and a third-stage grouting drill rod (4). The upper part of the sealing rod head (1) is provided with a pressure gauge, the lateral part is provided with a detachable grouting joint (5), and the lower part is provided with a thread and connected with a primary grouting rod. The primary grouting drill rod (2) is connected with the secondary grouting drill rod (3), a through hole is formed in the side part of the upper section of the primary grouting drill rod, a sealing ring is installed in the through hole, meanwhile, buckles (7) are welded to the upper portion and the lower portion of the inner wall of the drill rod, and the air pressing pipe (6) penetrates through the through hole and is installed on the buckles (7); the second-stage grouting drill rod (3) is connected with the third-stage grouting drill rod (4), buckles (7) are welded on the upper portion and the lower portion of the inner wall of the second-stage grouting drill rod, and the inner air pressing pipe (6) is connected through an inner buckle (8). A through hole is formed in the front end of the three-stage grouting drill rod (4), a blunt block is welded at the rear end of the three-stage grouting drill rod, and buckles (7) are welded at the front end and the rear end of the inner wall of the three-stage grouting drill rod; the air pressing pipe (6) is arranged on the internal buckle (7), the air pressing pipe (6) is divided into two parts at the front end, one part penetrates out of a through hole of the drill rod and is connected with a sealed air inlet of the air bag (10) arranged outside, the other part is arranged on the buckle at the rear end and is connected with the air pressing pipe (6) at the front end of the next grouting drill rod through an internal buckle (8), the buckle (7) is welded on the inner wall of the front section of the last three-stage grouting drill rod (4), the air pressing pipe (6) is single and non-forked and is arranged on the buckle (7) at the front section and is connected with the sealed air inlet of the air bag (10) arranged outside; the middle part of one surface of the air bag (10) is provided with strip-shaped wear-resistant rubber, nylon buckles are arranged at two long edges of the air bag, a sealing air inlet corresponding to a through hole of the three-stage grouting drill rod (4) is processed at the other surface of the air bag, and the air bag (10) is arranged outside the drill rod through a clamping buckle (9); and one of the clamping buckles (9) is arranged at the outer side of the front end through hole, and the other clamping buckle is arranged at the outer side of the rear end blunt block. And during actual use, a corresponding grouting mode is selected according to engineering conditions for grouting.
2. The sealing rod head (1) according to claim 1, wherein the inner diameter and the outer diameter of the sealing rod head (1) are the same as those of a drill rod, a pressure gauge is arranged on the upper portion of the sealing rod head, grouting pressure can be read timely and accurately, an inner threaded hole is formed in the side portion of the sealing rod head, an outer thread is formed in one side of the grouting pipe joint and is mounted with the sealing rod head (1) in a sealing mode, and the other side of the grouting joint (5) is connected.
3. The upper section of the first-stage grouting drill rod (2) as claimed in claim 1 is provided with a through hole, a sealing ring is arranged in the through hole, and the air pressing pipe (6) can directly penetrate out of the through hole to be connected with an air pump.
4. The air compression pipe (6) according to claim 3 is a high pressure pipe, which meets the upper limit of the air pressure required to be injected in the engineering. The air pressing pipe (6) is clamped on a buckle (7) inside the one-stage grouting drill rod (2) and can slide up and down on the buckle (7), the length of the air pressing pipe (6) is equal to that of the drill rod, and two ends of the air pressing pipe (6) are connected through an inner buckle (8).
5. The inner buckle (8) as claimed in claim 4 comprises the tail part of the inner air pipe (6) in the upper stage grouting drill rod (2) and the top part of the inner air pipe (6) in the lower stage grouting drill rod (2), wherein the tail part of the upper stage air pipe (6) is processed with a metal external thread, the diameter of the metal external thread is larger than that of the buckle (7), the top part of the lower stage air pipe (6) is processed with metal, a rotatable inner buckle (8) ring is processed, and an internal thread is processed on the inner buckle (8) ring.
6. The secondary grouting drill pipe (3) as claimed in claim 1 is internally welded with a buckle (7) and is provided with a gas compression pipe (6), and the length of the gas compression pipe (6) is equal to that of the drill pipe.
7. The three-stage grouting drill pipe (4) as claimed in claim 1, wherein a through hole is formed in one side of the three-stage grouting drill pipe (4), a sealing ring is installed in the through hole, buckles (7) are welded at two ends of the interior of the drill pipe, a branched air pressing pipe (6) is installed, a buckle (7) is welded on the inner wall of the front section of the last three-stage grouting drill pipe (4), the air pressing pipe (6) is a single pipe and is not branched, installed on the buckle (7), and is connected with an air inlet of an air bag (10); the length of the air pressing pipe (6) is equal to that of the drill rod; and an airbag (10) is mounted on the outside.
8. The airbag (10) as claimed in claim 7 is manufactured and sealed from two pieces of waterproof, breathable, intumescent pvc material.
9. The airbag (10) of claim 7 is spread out to have an area larger than or equal to the external area of the third-stage grouting drill rod (4), and one side of the airbag (10) is provided with a sealing air inlet which is positioned corresponding to a through hole of the third-stage grouting drill rod (4) and is connected with an air pressing pipe (6) penetrating through the through hole of the drill rod; the middle of the other side of the air bag (10) is processed with wear-resistant rubber, the wear-resistant rubber is prepared from a general elastic composite material, is the same as the packer rubber used for oil and shale gas exploitation, and has extremely strong wear resistance.
10. The wear-resistant rubber side of the air bag (10) according to claim 7 is aligned when being installed, namely, the side of the three-stage grouting drill rod (4) with the wear-resistant rubber is required to be arranged below the horizontal section hole; and the two long sides of the air bag (10) are processed with nylon tower buckles, and the air bag (10) is wrapped outside the drill rod to bond the nylon tower buckles tightly and the two ends are fastened tightly by using the clamping buckles (9).
11. The clip (9) of claim 10 having a screw hole through which a screw is screwed during installation, the clip (9) securing the air bag (10) tightly to the drill rod; and the inner side of the clamping buckle (9) is provided with a rubber protection pad, the front end clamping buckle (9) is arranged on the outer side of the front section blunt block of the three-stage grouting drill rod (4), and the rear end clamping buckle (9) is arranged on the outer side of the rear end blunt block of the three-stage grouting drill rod (4).
12. The primary, secondary and tertiary grouting drill pipes are all internal flush drill pipes according to claim 1, one primary grouting drill pipe (2) and a plurality of secondary grouting drill pipes (3) are arranged, and the length of the non-sealing hole section is determined according to the actual engineering. The three-stage grouting drill pipes (4) are multiple and are determined according to the actual engineering hole sealing section length.
The position of the three-stage grouting drill rod (4) is a hole sealing area, and the length of the hole sealing area is between the length of the grouting hole section and the bottom casing pipe and the length between the grouting hole section and the wellhead. And rubber separators are arranged at the front end and the rear end of the hole sealing area, and the separators adopt standards used in petroleum, shale gas and coal bed gas engineering.
13. The grouting method according to claim 1 comprises two methods:
advancing type grouting, specifically, after drilling for a distance, pulling out a drill, putting in a novel grouting drill rod, inflating an air bag (10) to design pressure, grouting a target hole section, pressing water after grouting to replace grout in the drill rod, pulling out the novel grouting drill rod, continuously drilling, repeating the steps, and completing whole drilling grouting.
Retreating type grouting, specifically drilling once, pulling out after drilling to the designed hole depth, after determining a grouting hole section, putting in a novel grouting drill rod, inflating an air bag (10) to the designed pressure, grouting, performing water pressing after grouting to replace grout in the drill rod, connecting a ground air pressing pipe (6) opening into an air pump, completely discharging gas in the air bag (10), lifting to the next grouting hole section, and repeating the steps until the grouting of the whole hole section is completed.
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| CN201911307298.XA CN112983344A (en) | 2019-12-17 | 2019-12-17 | Novel grouting drill rod and using method thereof |
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| CN201911307298.XA CN112983344A (en) | 2019-12-17 | 2019-12-17 | Novel grouting drill rod and using method thereof |
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Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1173576A (en) * | 1975-03-10 | 1977-09-08 | D. J Mltnro | Grout applicator |
| IT8122959A0 (en) * | 1980-07-15 | 1981-07-15 | Halliburton Co | MULTI-STAGE CEMENTATION AND INFLATION FILLING DEVICE OF THE INTERNAL LINING OF A DRILLING HOLE. |
| JPS615113A (en) * | 1984-06-18 | 1986-01-10 | Taiho Kensetsu Kk | Grouting work |
| KR100888585B1 (en) * | 2008-06-05 | 2009-03-13 | (주)경동기술공사 | Mult-step pressure type grouting apparatus and grouting method of using the same |
| CN102747980A (en) * | 2012-07-18 | 2012-10-24 | 中国矿业大学 | Expansion type multi-grade pressurized rapid hole sealing technology |
| CN102953707A (en) * | 2012-11-13 | 2013-03-06 | 中国石油化工股份有限公司 | Top-drive drill rod well cementing head |
| CN205805503U (en) * | 2016-06-03 | 2016-12-14 | 淮南大屯注浆工程有限公司 | Coal mine gas extraction drill hole band pressure grouting rapid hole packer |
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN109139046A (en) * | 2018-08-23 | 2019-01-04 | 洛阳恒诺锚固技术有限公司 | Segmenting slip casting self-drilling type barrel vault advanced support method |
| CN109162703A (en) * | 2018-10-16 | 2019-01-08 | 华北科技学院 | A kind of soft suitable coal bed drilling multistage on-line pressure sealant pressure measuring unit of overlength and method |
| CN109667542A (en) * | 2018-12-28 | 2019-04-23 | 杭州昂创科技有限公司 | The discontinuous pipe-following drilling anchor cable construction method of multistage subsection in broken formation |
| CN110259383A (en) * | 2019-07-04 | 2019-09-20 | 山东大学 | A kind of protrusive bores note integrated device and application method |
| CN211851768U (en) * | 2019-12-17 | 2020-11-03 | 北京大地高科地质勘查有限公司 | Novel grouting drill rod |
-
2019
- 2019-12-17 CN CN201911307298.XA patent/CN112983344A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU1173576A (en) * | 1975-03-10 | 1977-09-08 | D. J Mltnro | Grout applicator |
| IT8122959A0 (en) * | 1980-07-15 | 1981-07-15 | Halliburton Co | MULTI-STAGE CEMENTATION AND INFLATION FILLING DEVICE OF THE INTERNAL LINING OF A DRILLING HOLE. |
| JPS615113A (en) * | 1984-06-18 | 1986-01-10 | Taiho Kensetsu Kk | Grouting work |
| KR100888585B1 (en) * | 2008-06-05 | 2009-03-13 | (주)경동기술공사 | Mult-step pressure type grouting apparatus and grouting method of using the same |
| CN102747980A (en) * | 2012-07-18 | 2012-10-24 | 中国矿业大学 | Expansion type multi-grade pressurized rapid hole sealing technology |
| CN102953707A (en) * | 2012-11-13 | 2013-03-06 | 中国石油化工股份有限公司 | Top-drive drill rod well cementing head |
| CN205805503U (en) * | 2016-06-03 | 2016-12-14 | 淮南大屯注浆工程有限公司 | Coal mine gas extraction drill hole band pressure grouting rapid hole packer |
| CN108180024A (en) * | 2018-03-07 | 2018-06-19 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of air bag grouting stop-valve tube assembly convenient for bored grouting construction |
| CN109139046A (en) * | 2018-08-23 | 2019-01-04 | 洛阳恒诺锚固技术有限公司 | Segmenting slip casting self-drilling type barrel vault advanced support method |
| CN109162703A (en) * | 2018-10-16 | 2019-01-08 | 华北科技学院 | A kind of soft suitable coal bed drilling multistage on-line pressure sealant pressure measuring unit of overlength and method |
| CN109667542A (en) * | 2018-12-28 | 2019-04-23 | 杭州昂创科技有限公司 | The discontinuous pipe-following drilling anchor cable construction method of multistage subsection in broken formation |
| CN110259383A (en) * | 2019-07-04 | 2019-09-20 | 山东大学 | A kind of protrusive bores note integrated device and application method |
| CN211851768U (en) * | 2019-12-17 | 2020-11-03 | 北京大地高科地质勘查有限公司 | Novel grouting drill rod |
Non-Patent Citations (1)
| Title |
|---|
| 王全胜;肖红渠;李治国;: "全风化花岗岩钻杆水平后退式注浆技术研究", 铁道工程学报, no. 07, 15 July 2008 (2008-07-15), pages 74 - 78 * |
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