CN114737884A - Coring salvageable reamer and using method thereof - Google Patents
Coring salvageable reamer and using method thereof Download PDFInfo
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- CN114737884A CN114737884A CN202210478501.5A CN202210478501A CN114737884A CN 114737884 A CN114737884 A CN 114737884A CN 202210478501 A CN202210478501 A CN 202210478501A CN 114737884 A CN114737884 A CN 114737884A
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- reamer
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005553 drilling Methods 0.000 claims abstract description 110
- 239000012530 fluid Substances 0.000 claims abstract description 31
- 241001449342 Chlorocrambe hastata Species 0.000 claims description 53
- 238000013016 damping Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 230000035939 shock Effects 0.000 claims 3
- 230000008569 process Effects 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000011664 signaling Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
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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
- E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
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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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- Engineering & Computer Science (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)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Abstract
The invention relates to a coring salvageable reamer and a use method thereof.A mode of throwing a single-pipe drilling tool, a reamer mounting sleeve assembly and parts thereof is adopted, and a mode of throwing a reaming ball changes the flow direction of drilling fluid to push blades to extend so as to realize coring and reaming; the adoption drops into the mode of salvaging the lance, realizes that the wing of a knife forces to reset, adopts the winch to promote the mode of salvaging the lance and realizes that coring reaming structure retrieves. The technical scheme has the advantage of simple process flow, and the reaming can be realized simultaneously, so that the problems of low reaming efficiency and difficult reaming structure resetting encountered in the conventional reaming-while-drilling technology can be effectively solved, and the method can be widely applied to the geological exploration industry.
Description
Technical Field
The invention relates to the technical field of equipment in the field of geological exploration, in particular to a coring salvageable reamer and a using method thereof.
Background
In the prior art, hole collapse and necking in the well during the small-diameter drilling process are main reasons for jamming of the drill, and in the aspect of processing, the jamming and escaping are required to be carried out on the reaming of the accident well section, the frequency of drill lifting and replacing can be reduced by carrying out the reaming while drilling, the drilling operation time is shortened, and the drilling efficiency is improved.
In actual drilling operation, obviously, the safe and efficient coring and reaming equipment expands the diameter of a borehole, so that the aperture exceeds the size of a drill bit, and a plurality of high-cost drilling operation problems can be solved.
Based on this, the prior art lacks a drilling tool capable of simultaneously realizing reaming and coring functions, and is also a great problem faced by the current stage technology of the geological exploration industry.
For example, the patent of the Chinese utility model, patent number 202122242523.5, patent name "reamer while drilling at the lower part of casing" discloses a scheme that a ball-pressing casing structure moves downwards to collide, so that the colliding telescopic rod structure realizes reaming; for another example, the chinese patent application, patent No. 202011141372.8, entitled "reamer while drilling and operation method for drilling" discloses a solution in which a spring is pushed by hydraulic pressure to move an upper piston, an inner support tube and a lower piston, so as to extend and retract blades of a drill bit; thirdly, a patent No. 201721134096.6, a chinese utility model patent, entitled "a novel underreamer for casing pipe while drilling" discloses a scheme in which a piston compression spring pushes a drive shaft to descend to drive a dovetail groove cutting block to radially move for reaming; the technical defects of the drilling tool scheme include that coring cannot be performed during actual work, the blades cannot be forcibly reset, and the reamer cannot be recycled.
Disclosure of Invention
The invention provides a retrievable core reamer and a use method thereof, aiming at solving the technical problems of reaming while drilling and core taking in the prior art.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a coring salvageable reamer comprising:
the coring and reaming body is formed by sequentially connecting a coring bit, a first drill rod, a second drill rod, a third drill rod and a fourth drill rod in a threaded manner;
the coring bit, the first drill rod, the second drill rod and the third drill rod form a drilling fluid conveying channel;
further comprising:
the single-pipe drilling tool is arranged in a first direction of the reamer;
the reaming ball limiting assembly, the blade assembly, the snapping device and the spearhead fishing assembly are arranged on the second drill rod;
in a coring working state or a reaming working state, after the single-pipe drilling tool is put into operation and reaches the position of the limiting shoulder, an alarm signal device arranged on the second drill rod can send out an in-place signal so that the single-pipe drilling tool enters the coring working state;
when the working state is reaming drilling, a reaming ball can be put in the reaming ball limiting component, drilling fluid passes through the valve plate and a core pipe through a valve plate which is adjacently arranged in a first direction and limited by the reaming ball, and reversely flows to push a piston to act, and the cutter wing assembly is driven to extend out of the hole extending end of the third drill rod during the action of the piston so as to realize reaming while drilling;
the spearhead fishing assembly is lifted to the ground surface by utilizing a winch to fish a single-pipe drilling tool and a reamer mounting sleeve assembly, and the coring operation is completed.
Specifically, the method further comprises the following steps: and the compression reaming ball limiting assembly is used for compressing the reaming ball limiting assembly when the drilling fluid pressure reaches a preset pressure value, so that the coring bit can continuously provide drilling fluid.
Specifically, when the coring working state or the reaming working state is finished, the reaming ball can be reset along with the reaming ball limiting assembly, so that the cutter blade assembly is reset through transmission control to finish the reaming operation.
Specifically, the method further comprises the following steps:
the throwing fishing spearhead assembly can drive the blades to form forced reset by pushing a transmission shaft.
Specifically, the method further comprises the following steps:
the compression spring clip device consists of a spring clip reset spring and a spring clip pin;
the dropping fishing spearhead assembly comprises a fishing spearhead, and the elastic clamping pin is clamped on the fishing spearhead.
Specifically, the spearhead assembly further comprises:
a spearhead return spring, a spearhead pin shaft and a spearhead seat;
and a second outer tube and a first outer tube disposed within the fourth drill rod and connected therewith;
the mounting shaft is mounted in the second outer pipe and the first outer pipe and extends towards the second direction to be connected with the fishing spear seat;
the second end of the fishing spear seat is connected with the fishing spear head pin shaft;
the fishing spearhead return spring part is positioned in the first end of the fishing spearhead, so that the fishing spearhead pin shaft compresses the fishing spearhead return spring.
The damping device comprises a damping spring mounting seat, a centering ring and a limiting nut, wherein the damping spring mounting seat is arranged on the damping spring mounting seat;
the limiting nut is arranged on the mounting shaft;
the damping spring cover plate is arranged between the fishing spear seat and the mounting shaft and is arranged on the damping spring mounting seat;
damping spring arranges on the damping spring mount pad and the cover establishes drag for the first end of lance seat.
Specifically, the method further comprises the following steps:
the reamer mounting sleeve is connected to the reamer, and a reamer wear-resisting plate is arranged on the periphery of the reamer mounting sleeve;
a clamping jaw is arranged in the single-pipe drilling tool;
also includes:
the core tube is connected with the first end of the clamping jaw, and the second end of the core tube is connected with the exhaust valve fixing ring and the exhaust valve through the reducing joint;
the mounting seat is connected with a fixing nut to fix the first end of the single pipe drilling tool;
the core barrel is provided with a movable water distribution cap, and the movable water distribution cap is arranged at the second end of the exhaust valve fixing ring.
Specifically, the reaming ball limiting assembly comprises:
the hole expanding ball return spring is arranged between the in-place signal alarm and the hole expanding ball;
a landing seat on which the reamer ball is seatable;
further comprising:
the reamer mounting sleeve assembly comprises a first reamer mounting sleeve and a second reamer mounting sleeve which are connected with each other;
the mounting pin shaft is arranged between the blade return spring and the elastic clamping device;
the blade assembly includes a blade disposed on the third drill pipe;
the blade is rotationally connected with a blade pin shaft;
the blade pin shaft is driven by the transmission shaft to control the rotation of the blade pin shaft, so that the blade can extend out of an extending hole formed in the third drill rod.
In addition, this technical scheme discloses a coring salvageable formula reamer's application method, includes:
step 1, sequentially connecting a coring bit 1, a first drill rod 2, a second drill rod 12, a third drill rod 19 and a fourth drill rod 20 in a threaded manner to form a coring and reaming body;
the core bit 1, the first drill rod 2, the second drill rod 12 and the third drill rod 19 form a drilling fluid conveying channel;
step 2, a reamer 3 arranged on the first drill rod 2, and a monotube drilling tool 4 arranged in a first direction of the reamer 3;
a reaming ball limiting component 6, a blade component 15, an elastic clamping device 18 and a spearhead fishing assembly 19 which are arranged on the second drill rod 12, and a single-pipe drilling tool 4 is used for completing the coring operation;
when the working state is reaming drilling, a reaming ball 7 can be put into the reaming ball limiting assembly 6, drilling fluid can pass through the valve plate 8 and a core pipe 13 through a valve plate 8 adjacently arranged in the first direction of the reaming ball limiting assembly 6 and reversely flow to push a piston 9 to act, and the piston 9 drives the blade assembly 15 to extend out of the hole extending end of the third drill rod 16 during acting, so that reaming while drilling is realized;
step 4, slurry flows reversely through the mandrel and the valve plate, so that the slurry pushes the piston to move reversely, and the piston pushes the transmission shaft to move;
step 5, extending out the blade to complete reaming while drilling;
step 6, the reset spring pushes the transmission shaft to reset, and the reset operation is completed;
when the resetting operation fails, the fishing spear is put in, the blade is forced to be reset forcibly, and the fishing spear enters a winch to be recovered;
when the reset operation is successful, the blade is retracted and is thrown into the fishing spear, the fishing spear is retracted by the winch, and the coring and reaming operation is finished.
The invention has the following beneficial effects:
on the first hand, when the technical scheme is applied and coring or reaming is needed, a single-pipe drilling tool, a reamer mounting sleeve assembly and accessory parts thereof are thrown in, the single-pipe drilling tool reaches the limiting shoulder, and the single-pipe drilling tool performs coring;
in the second aspect, when reaming drilling is needed, a reaming ball is put in, drilling fluid reversely flows through a flow distribution plate and a core pipe to push a piston to move, and a transmission shaft drives a blade assembly to extend out for reaming while drilling; when the pressure of the drilling fluid reaches the pressure value set by the reaming ball return spring, the reaming ball compresses the reaming ball limiting assembly, and the drilling fluid continues to provide the drilling fluid for the coring bit through a distributing hole formed in the ball connecting seat;
in the third aspect, after coring or reaming is finished, the drilling fluid is stopped to be supplied, the blade assembly is reset, and reaming is finished; throwing the spearhead fishing assembly to realize forced reset of the blade assembly; and (5) fishing the spearhead and matching with the snapping device, and fishing the coring and reaming device to the ground surface by using a winch, thus finishing coring.
In the fourth aspect, the technical scheme has the advantage of simple process flow, and the reaming can be realized simultaneously to achieve coring, so that the problems of low reaming efficiency and difficult reaming structure resetting encountered in the existing stage of reaming while drilling technology can be effectively solved, and the method can be widely applied to the geological exploration industry.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a schematic diagram of the overall configuration of a coring salvageable reamer and method according to the present invention;
FIG. 2 is a partial schematic view of a portion of a coring salvageable reamer and method of the present invention;
FIG. 3 is a partial schematic view of a portion of a coring salvageable reamer and method of using the reamer in accordance with the present invention;
FIG. 4 is a partial schematic view of a coring salvageable reamer and method blades according to the present invention;
FIG. 5 is a partial schematic view of a portion of a coring salvageable reamer and method fishing spear in accordance with the present invention;
fig. 6 is a flowchart of the operation of a coring salvageable reamer and method according to the present invention.
The reference numerals in the figures denote:
1-coring bit, 2-first drill rod, 3-reamer, 31-reamer mounting sleeve, 32-reamer wear-resisting plate, 4-single-pipe drilling tool, 41-jack catch, 42-core tube, 43-movable water diversion cap, 44-reducing joint, 45-exhaust valve fixing ring, 46-exhaust valve, 47-fixing nut, 48-mounting seat, 5-in-place signaling device, 6-reamer ball limiting assembly, 61-reamer ball return spring, 62-ball receiving seat, 6-reamer ball, 8-valve plate, 9-piston, 10-reamer mounting sleeve assembly, 101-first reamer mounting sleeve, 102-second reamer mounting sleeve, 103-mounting pin shaft, 11-bearing, 111-bearing cover plate, 12-second drill pipe, 13-core pipe, 14-transmission shaft, 15-wing assembly, 151-wing, 152-wing pin shaft, 16-third drill pipe, 17-wing return spring, 18-snapping device, 181-snapping return spring, 182-snapping pin, 19-spearhead assembly, 191-spearhead, 192-spearhead return spring, 193-spearhead pin shaft, 194-spearhead seat, 195-damping spring cover plate, 196-damping spring, 197-damping spring mounting seat, 198-centering ring, 199-limit nut, 1910-mounting shaft, 1911-first outer pipe, 1912-second outer pipe and 20-fourth drill pipe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention; for convenience of description, in the present application, "left side" is "first end", "right side" is "second end", "upper side" is "first end", and "lower side" is "second end" in the current view, so that the description is for the purpose of clearly expressing the technical solution, and should not be construed as an improper limitation to the technical solution of the present application.
The invention aims to solve the technical problems of reaming while drilling and coring in the prior art and overcome technical barriers in the background art, and the specific technical scheme is that as shown in the attached drawings 1-6, the salvageable coring reamer comprises: a coring and reaming body consisting of a coring bit 1, a first drill rod 2, a second drill rod 12 and a first drill rod
The three drill rods 19 and the fourth drill rod 20 are sequentially connected by screw threads; the coring bit 1, the first drill rod 2, the second drill rod 12 and the third drill rod 19 form a drilling fluid conveying channel;
specifically, the method further comprises the following steps: a reamer 3 mounted on the first drill rod 2, and a monotube drilling tool 4 disposed in a first direction of the reamer 3; the reaming ball limiting component 6, the blade component 15, the snapping device 18 and the spearhead fishing assembly 19 are arranged on the second drill rod 12;
in a coring working state or a reaming working state, after the single-pipe drilling tool 4 is put into operation and the single-pipe drilling tool 4 reaches the position of the limiting shoulder, an alarm signal device 5 arranged on the second drill rod 12 can send out an in-place signal so that the single-pipe drilling tool 4 enters the coring working state;
when the working state is reaming drilling, a reaming ball 7 can be put in the reaming ball limiting assembly 6, drilling fluid passes through the valve plate 8 and a core pipe 13 through a valve plate 8 adjacently arranged in the first direction of the reaming ball limiting assembly 6 and reversely flows to push a piston 9 to act, and the cutter wing assembly 15 is driven to extend out of the hole extending end of a third drill rod 16 when the piston 9 acts, so that reaming while drilling is realized;
the spearhead fishing assembly 19 utilizes a winch to salvage the monotube drilling tool 4 and the reamer mounting sleeve assembly 10 and lifts the monotube drilling tool and the reamer mounting sleeve assembly to the ground surface, and coring operation is completed.
In a specific embodiment, the method further comprises the following steps: compression reaming ball limit assembly 6, after drilling fluid pressure force reached a default pressure value, reaming ball 7 can compress compression reaming ball limit assembly 6 to make the drilling fluid that provides that coring bit 1 can last.
In a specific embodiment, when the coring operation state or the reaming operation state is finished, the reaming ball 7 can be reset along with the reaming ball limiting assembly 6, so that the blade assembly 15 is reset through transmission control to finish the reaming operation.
In a specific embodiment, the method further comprises the following steps: the throwing fishing spearhead assembly 19 can drive the blade assembly 15 to be reset forcibly by pushing a transmission shaft 14.
In a specific embodiment, the method further comprises the following steps: the compression spring clip device 18 consists of a spring clip return spring 181 and a spring clip pin 182; the dropping fishing spearhead assembly 19 comprises a fishing spearhead 191, and the latch pin 182 is clamped on the fishing spearhead 191.
In one embodiment, the spearhead assembly 19 further comprises: a spearhead return spring 192, a spearhead pin 193 and a spearhead seat 194; and a second outer tube 1912 and a first outer tube 1911 provided in the fourth drill rod 20 so as to be connected; the mounting shaft 1910 fits within the second outer tube 1912 and the first outer tube 1911 and extends in a second direction to connect with the spear 194; the second end of the fishing spear seat 194 is connected with a fishing spearhead pin 193;
a spearhead return spring 192 is located partially within a first end of the spearhead 191 such that a spearhead pin 193 compresses the spearhead return spring 192.
In a specific embodiment, the device further comprises a damping spring cover plate 195, a damping spring 196, a damping spring mounting seat 197, a centralizing ring 198 and a limit nut 199; the limit nut 199 is arranged on the mounting shaft 1910; a damping spring cover plate 195 is arranged between the spear seat 194 and the mounting shaft 1910 and is mounted on a damping spring mounting seat 197; the damping spring 196 is disposed on the damping spring mount 197 and is sleeved on the first end of the spear seat 194.
In a specific embodiment, the method further comprises the following steps: a reamer mounting sleeve 31 connected to the reamer 3, the reamer mounting sleeve 31 having a reamer wear plate 32 on an outer periphery thereof; a clamping jaw 41 is arranged inside the single pipe drilling tool 4;
also includes: a core tube 42 connected to a first end of the jaw 41, a second end of the core tube 42 being connected to an exhaust valve fixing ring 45 and an exhaust valve 46 through a reducing joint 44; and a mounting seat 48, wherein a fixing nut 47 is connected to the mounting seat 48 to fix the first end of the single pipe drilling tool 4; the core tube 42 is provided with a movable water diversion cap 43, and the movable water diversion cap 43 is arranged at the second end of the exhaust valve fixing ring 45.
In one particular embodiment, the reamer ball retainer assembly 6 comprises: a reaming ball return spring 61 arranged between the in-place signal alarm 5 and the reaming ball 7; an abutment seat 62 on which the reamer ball 7 can be seated 62; further comprising: a reamer mounting sleeve assembly 10 comprising a first reamer mounting sleeve 101 and a second reamer mounting sleeve 102 connected to one another; the mounting pin shaft 103 is arranged between the blade return spring 17 and the elastic clamping device 18; the blade assembly 15 comprises blades 151 arranged on the third drill rod 19; the blade is rotationally connected with a blade pin shaft 152;
the blade pin 152 is driven by a drive shaft to rotate so that the blade 151 can be extended from the extension hole provided in the third drill rod 19.
In addition, in the technical scheme, the use method of the coring salvageable reamer comprises the following steps:
step 1, sequentially connecting a coring bit 1, a first drill rod 2, a second drill rod 12, a third drill rod 19 and a fourth drill rod 20 in a threaded manner to form a coring and reaming body;
the core bit 1, the first drill rod 2, the second drill rod 12 and the third drill rod 19 form a drilling fluid conveying channel;
step 2, a reamer 3 arranged on the first drill rod 2, and a monotube drilling tool 4 arranged in a first direction of the reamer 3;
a reaming ball limiting component 6, a blade component 15, an elastic clamping device 18 and a spearhead fishing assembly 19 which are arranged on the second drill rod 12, and a single-pipe drilling tool 4 is used for completing the coring operation;
when the working state is reaming drilling, a reaming ball 7 can be put into the reaming ball limiting assembly 6, drilling fluid can pass through the valve plate 8 and a core pipe 13 through a valve plate 8 adjacently arranged in the first direction of the reaming ball limiting assembly 6 and reversely flow to push a piston 9 to act, and the piston 9 drives the blade assembly 15 to extend out of the hole extending end of the third drill rod 16 during acting, so that reaming while drilling is realized;
step 4, slurry flows reversely through the mandrel and the valve plate, so that the slurry pushes the piston to move reversely, and the piston pushes the transmission shaft to move;
step 5, extending out the blade to complete reaming while drilling;
step 6, the reset spring pushes the transmission shaft to reset, and the reset operation is completed;
when the resetting operation fails, the fishing spear is put in, the blade is forced to be reset forcibly, and the fishing spear enters a winch to be recovered;
when the reset operation is successful, the blade is retracted and is thrown into the fishing spear, the fishing spear is retracted by the winch, and the coring and reaming operation is finished.
Further, a specific embodiment is described, and example 1: in the conventional drilling operation process, the core bit 1 transmits torque through the first drill rod 2, the second drill rod 12, the third drill rod 16 and the fourth drill rod 20 to complete the drilling operation;
example 2: when coring is needed in the drilling process, the single-pipe drilling tool 4, the reamer mounting sleeve assembly 10 and the accessory parts thereof are thrown in, the in-place signaling device 5 sends out an in-place signal, and the single-pipe drilling tool 4 performs coring;
example 3: in the drilling operation process, when creep and necking occur in a well section and the like, the reamer is required to work while drilling, the reaming ball 7 is put into the well section, drilling fluid reversely flows through the flow distribution plate 8 and the core pipe 13 to push the piston 9 to move, then the piston 9 drives the transmission shaft 14 to move, and the blade assembly 15 extends out of holes formed in the second reamer mounting sleeve 102 and the third drill pipe 16 to perform reaming while drilling;
example 4: after reaming is finished, reducing the flow of media such as mud or drilling fluid, resetting the reaming ball 7 along with the reaming ball limiting assembly 6, further pushing the piston 9 by the blade resetting spring 17 to drive the transmission shaft 14 to reset, further driving the transmission shaft 14 to drive the blade assembly 15 to reset, and finishing reaming;
example 5: throwing the spearhead fishing assembly 19, wherein the spearhead fishing assembly 19 pushes the transmission shaft 14 to be forcibly reset and drives the blade assembly 15 to be forcibly reset;
example 6: the spear fishing head 191 compresses the bullet clip device 18, the bullet clip return spring 181 pushes the bullet clip pin 182 to return, the spear fishing head assembly 19 salvages the single-pipe drilling tool 4, the reamer mounting sleeve assembly 10 and the accessory parts thereof to the ground by using a winch, and coring is finished;
in a more preferred technical scheme, the outer diameter of the coring bit 1 is 5.5 inches, and the outer diameter of the coring bit 1 is 8.5 inches.
The method and the working principle of the technical scheme are concretely explained as follows: referring to fig. 1 to 6, when coring or reaming is required, the single-pipe drilling tool 4, the reamer mounting sleeve assembly 10 and its accessory components are thrown in, and after the single-pipe drilling tool 4 reaches the limiting shoulder, the in-place signaling device 5 sends out an in-place signal, and the single-pipe drilling tool 4 performs coring; when reaming drilling is needed, a reaming ball 7 is put in, drilling fluid reversely flows through a valve plate 8 and a core pipe 13 to push a piston 9 to move, and then a blade assembly 15 is driven to extend out through holes formed in a second reamer mounting sleeve 102 and a third drill rod 16 to ream while drilling; a bearing 11 and a bearing cover plate 111 are arranged behind the piston 9, the position is limited by a second reamer mounting sleeve 102, when the pressure of the drilling fluid reaches the pressure value set by the reamer ball return spring 61, the reamer ball 7 compresses the reamer ball limiting assembly 6, and the drilling fluid continues to provide the drilling fluid for the coring bit 1 through a distributing hole formed in the ball connecting seat 62; after coring or reaming is finished, drilling fluid supply is stopped or reduced, the reaming ball 7 is reset along with the reaming ball limiting assembly 6, and then the blade reset spring 17 pushes the piston 9 to drive the blade assembly 15 to reset, and reaming is finished; throwing in a spearhead fishing assembly 19, wherein the spearhead fishing assembly 19 pushes the transmission shaft 14 to force and further drives the blade assembly 15 to force to reset; the spear fishing head 191 cooperates with the snapping device 18 to fish the monotube drilling tool 4 and the reamer mounting sleeve assembly 10 and its accessories to the surface by using a winch, and coring is finished.
In the description of the present invention, it should be understood that the terms "first", "second", "third", etc. are used to define the components, and are used only for the convenience of distinguishing the components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
Furthermore, the technical features of one embodiment may be combined with one or more other embodiments advantageously without explicit negatives.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will appreciate that; modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A coring, salvageable reamer, comprising:
the core-taking reaming body is formed by sequentially connecting a core-taking drill bit (1), a first drill rod (2), a second drill rod (12), a third drill rod (19) and a fourth drill rod (20) in a threaded manner;
the core bit (1), the first drill rod (2), the second drill rod (12) and the third drill rod (19) form a drilling fluid conveying channel;
further comprising:
a reamer (3) mounted on the first drill rod (2), and a monotube drill (4) arranged in a first direction of the reamer (3);
a reaming ball limiting component (6), a blade component (15), a spring clip device (18) and a spearhead fishing assembly (19) which are arranged on the second drill rod (12);
in a coring working state or a reaming working state, after the single-pipe drilling tool (4) is put into operation and the single-pipe drilling tool (4) reaches the position of the limiting shoulder, an alarm signal device (5) arranged on the second drill rod (12) can send out an in-position signal, so that the single-pipe drilling tool (4) enters the coring working state;
when the working state is reaming drilling, a reaming ball (7) can be put into the reaming ball limiting assembly (6), drilling fluid can pass through the valve plate (8) and a core pipe (13) through the valve plate (8) adjacently arranged in the first direction of the reaming ball limiting assembly (6), and reversely flow to push a piston (9) to act, and the piston (9) drives the blade assembly (15) to extend out of the hole extending end of the third drill rod (16) during acting, so that reaming while drilling is realized;
the spearhead fishing assembly (19) is lifted to the ground surface by utilizing a winch to fish a single-pipe drilling tool (4) and the reamer mounting sleeve assembly (10), and the coring operation is completed.
2. The coring salvageable reamer of claim 1, further comprising: compression reaming ball limit assembly (6), work as after drilling fluid pressure force reaches a preset pressure value, reaming ball (7) can compress compression reaming ball limit assembly (6), so that coring bit (1) can last provide drilling fluid.
3. The coring and salvageable reamer of claim 2, wherein when the coring operation state or the reaming operation state is finished, the reaming ball (7) can be reset along with the reaming ball limiting assembly (6), so that the blade assembly (15) is reset through transmission control, and the reaming operation is finished.
4. A coring salvageable reamer as claimed in claim 3, further comprising:
the throwing fishing spearhead assembly (19) can drive the blade assembly (15) to be forcibly reset by pushing a transmission shaft (14).
5. The coring salvageable reamer of claim 4, further comprising:
the compression spring clip device (18) consists of a spring clip return spring (181) and a spring clip pin (182);
the dropping fishing spearhead assembly (19) comprises a fishing spearhead (191), and the latch pin (182) is clamped on the fishing spearhead (191).
6. The coring salvageable reamer of claim 5, wherein the stabbing spearhead assembly (19) further comprises:
a spearhead return spring (192), a spearhead pin shaft (193) and a spearhead seat (194);
and a second outer tube (1912) and a first outer tube (1911) arranged inside the fourth drill rod (20) and connected therewith;
a mounting shaft (1910) is mounted in the second outer tube (1912) and the first outer tube (1911) and extends towards the second direction to be connected with the fishing spear seat (194);
the second end of the spear fishing seat (194) is connected with the spear fishing head pin shaft (193);
the fishing spearhead return spring (192) is partially positioned in the first end of the fishing spearhead (191) so that the fishing spearhead pin (193) compresses the fishing spearhead return spring (192).
7. The coring salvageable reamer of claim 6, further comprising a shock spring cover plate (195), a shock spring (196), a shock spring mount (197), a centralizing ring (198), and a limit nut (199);
the limit nut (199) is arranged on the mounting shaft (1910);
the damping spring cover plate (195) is arranged between the fishing spear seat (194) and the mounting shaft (1910) and is mounted on a damping spring mounting seat (197);
damping spring (196) arrange on damping spring mount pad (197) and the cover is established drag for the first end of lance seat (194).
8. The coring salvageable reamer of claim 7, further comprising:
the reamer mounting sleeve (31) is connected to the reamer (3), and a reamer wear-resisting plate (32) is arranged on the periphery of the reamer mounting sleeve (31);
a jaw (41) is arranged in the single-pipe drilling tool (4);
also includes:
a core tube (42) connected to a first end of the jaw (41), a second end of the core tube (42) being connected to an exhaust valve fixing ring (45) and an exhaust valve (46) through a reducing joint (44);
the mounting seat (48) is connected with a fixing nut (47) to fix the first end of the single pipe drilling tool (4);
the core tube (42) is provided with a movable water distribution cap (43), and the movable water distribution cap (43) is arranged at the second end of the exhaust valve fixing ring (45).
9. The coring salvageable reamer of claim 8, wherein the reamer ball limit assembly (6) comprises:
the hole expanding ball return spring (61) is arranged between the in-place signal alarm (5) and the hole expanding ball (7);
a landing seat (62), on which landing seat (62) the reamer ball (7) can be seated;
further comprising:
a reamer mounting sleeve assembly (10) comprising a first reamer mounting sleeve (101) and a second reamer mounting sleeve (102) interconnected;
the mounting pin shaft (103) is arranged between the blade return spring (17) and the elastic clamping device (18);
the blade assembly (15) comprises blades (151) arranged on the third drill rod (19);
the blade is rotationally connected with a blade pin shaft (152);
the blade pin shaft (152) is driven by the transmission shaft to control the rotation of the blade pin shaft, so that the blade (151) can extend out of an extending hole formed in the third drill rod (19).
10. A method of using a coring salvageable reamer, comprising:
step 1, a coring and reaming body is formed by sequentially connecting a coring bit (1), a first drill rod (2), a second drill rod (12), a third drill rod (19) and a fourth drill rod (20) in a threaded manner;
the coring bit (1), the first drill rod (2), the second drill rod (12) and the third drill rod (19) form a drilling fluid conveying channel;
step 2, a reamer (3) arranged on the first drill rod (2), and a single-pipe drilling tool (4) arranged in a first direction of the reamer (3);
a reaming ball limiting assembly (6), a blade assembly (15), a snapping device (18) and a spearhead fishing assembly (19) which are arranged on the second drill rod (12), and a single-pipe drilling tool (4) is used for completing the coring operation;
step 3, putting into use a reaming ball;
when the working state is reaming drilling, a reaming ball (7) can be put into the reaming ball limiting assembly (6), drilling fluid can pass through the valve plate (8) and a core pipe (13) through a valve plate (8) adjacently arranged in the first direction of the reaming ball limiting assembly (6) and reversely flow to push a piston (9) to act, and the piston (9) drives the blade assembly (15) to extend out of the hole extending end of the third drill rod (16) during action so as to realize reaming while drilling;
step 4, slurry flows reversely through the mandrel and the valve plate, so that the slurry pushes the piston to move reversely, and the piston pushes the transmission shaft to move;
step 5, extending out the blade to complete reaming while drilling;
step 6, the reset spring pushes the transmission shaft to reset, and the reset operation is completed;
when the resetting operation fails, the fishing spear is put in, the blade is forced to be reset forcibly, and the fishing spear enters a winch to be recovered;
when the reset operation is successful, the blade is retracted and is thrown into the fishing spear, the fishing spear is retracted by the winch, and the coring and reaming operation is finished.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210478501.5A CN114737884B (en) | 2022-05-05 | 2022-05-05 | Coring salvageable reamer and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210478501.5A CN114737884B (en) | 2022-05-05 | 2022-05-05 | Coring salvageable reamer and using method thereof |
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| CN114737884A true CN114737884A (en) | 2022-07-12 |
| CN114737884B CN114737884B (en) | 2023-02-28 |
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| CN202210478501.5A Active CN114737884B (en) | 2022-05-05 | 2022-05-05 | Coring salvageable reamer and using method thereof |
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| CN214365960U (en) * | 2020-12-28 | 2021-10-08 | 天津华勘钻探机具有限公司 | Drilling tool with semi-closed pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737884B (en) | 2023-02-28 |
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