CN102337858B - Tool for grouting in loose coal seam section during drilling - Google Patents

Tool for grouting in loose coal seam section during drilling Download PDF

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Publication number
CN102337858B
CN102337858B CN201110254159.2A CN201110254159A CN102337858B CN 102337858 B CN102337858 B CN 102337858B CN 201110254159 A CN201110254159 A CN 201110254159A CN 102337858 B CN102337858 B CN 102337858B
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China
Prior art keywords
sleeve
sliding plate
groove
valve seat
rotating disk
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Expired - Fee Related
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CN201110254159.2A
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Chinese (zh)
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CN102337858A (en
Inventor
路桂英
王院生
张永权
乌效鸣
王生维
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China University of Geosciences
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China University of Geosciences
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Priority to CN201110254159.2A priority Critical patent/CN102337858B/en
Publication of CN102337858A publication Critical patent/CN102337858A/en
Application granted granted Critical
Publication of CN102337858B publication Critical patent/CN102337858B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention relates to a tool for grouting in a loose coal seam section during drilling, which comprises a one-way valve, a valve seat, a ratchet wheel control mechanism, a shell and a nozzle. A tray shaft is arranged in a tray shaft hole, a valve spring, a tray and a rubber pad are limited on the tray shaft through a valve nut; the ratchet wheel control mechanism comprises a ratchet wheel spring, a sliding plate, a rotating plate and a fixed slot, the two sides of the sliding plate are provided with the ratchet wheel spring and the rotating plate, and the end faces of the sliding plate and the rotating plate have the same diameter and are provided with three through holes with the same design; when control signals are not executed, the fixed slot is sleeved outside the valve seat and the rotating plate, and a fixed slot bulge is arranged on the fixed slot and is clamped in a short slot in a sleeve for positioning in the sleeve; and the shell comprises a short drill bit joint and the sleeve, and the nozzle is arranged on the outer wall of the sleeve. The two ends of the shell are connected with a drill bit and a drill stem through pipe threads and are provided with a sealing ring. The grouting tool has a simple structure, normal drilling and grouting type drilling can be achieved via mechanical signal transmission and control, and the tool can be used safely and reliably and is suitable for drilling of loose sections after gas exploration in underground coal seams and also other under-balanced drilling projects.

Description

A kind of tool for grouting in loose coal seam section during drilling
Technical field
The present invention relates to a kind of tool for grouting in loose coal seam section during drilling.
Background technology
Digging is connected, adopt that to take out the contradiction that the contradiction of linking and extraction and production robs domain be the principal contradiction of down-hole extraction way existence.Add the needs of intensive boring, just require constructor's " efficiently " boring." efficiently " is embodied in two aspects, and the cycle of holing is short and pore-forming natural rate of interest is high.The drilling well in underground gas extraction hole at present adopts under balance pressure drilling, mainly adopts air/atomization drilling mode, and drilling period shortens dramatically, and has foreign scholar to study and thinks that the under balance pressure drilling cycle is 1/10 of conventional mud drilling period, meets requirement of engineering.But pore-forming natural rate of interest is generally lower, can describe with " ten brills nine are undesired ".Trace it to its cause, hole wall unstability, causes that the undesired rate of boring accounts for greatly more than 53%, and chance soft coal level is being bored in Frequent Accidents life.Therefore according to the needs of producing, study the efficient breast wall technology of frangible section coal seam drilling, significant to improving drilling efficiency.
Summary of the invention
The object of the invention is for solving above-mentioned frangible section coal seam drilling hole wall destabilization problems, provide a kind of simple in structure, control convenient and use reliable, economic tool for grouting in loose coal seam section during drilling.
For achieving the above object, the technical scheme that the present invention takes is: a kind of tool for grouting in loose coal seam section during drilling is provided, comprise one way valve, valve seat, ratchet controlling organization, housing and nozzle, described one way valve is by pallet axle, valve spring, pallet, rubber pad, valve nut forms, described valve seat is a cylinder, there has been the band hypotenuse straight trough of guiding and position-limiting action cylinder one end, the other end is with nose circle face, there is pallet axis hole at nose circle face center, pallet axle is arranged in described pallet axis hole, by valve nut by valve spring, pallet, rubber pad is spacing on pallet axle,
Described ratchet controlling organization by ratchet spring, sliding plate, rotating disk, determine groove and form, sliding plate and rotating disk all have an end face, sliding plate end face and rotating disk end face are isometrical, sliding plate one side is provided with ratchet spring, opposite side is provided with rotating disk, and the other end of rotating disk is with relative with the band hypotenuse notch of valve seat one end with hypotenuse groove; Determine groove and be enclosed within the outside of valve seat and rotating disk; Under the effect of wind-force, valve seat moves right, and promotes rotating disk and moves to right, the sliding plate compression ratchet spring that moves to right; When rotating disk when hypotenuse groove and the inclined-plane of determining groove one end are on the same face, under the effect of ratchet spring, dial rotation once, just turns over an angle, makes to enter to determine in another groove of groove with the oblique peak dot landing of hypotenuse groove; In the card of described sliding plate, there are 3 sliding plate holes, in the periphery of sliding plate, are arranged with 2 sliding plate projections; On the dish end face of rotating disk, also there are 3 turret apertures with sliding plate hole same design; During described dial rotation, by controlling dial rotation angle, realize at interval of rotating once, 3 sliding plate holes communicate between two with 3 turret apertures; The one end of determining groove has 2 to determine geosynclinal convex and rise, and determines geosynclinal convex and rises in the short groove of the sleeve being stuck in sleeve, by determining geosynclinal convex, rises and makes to determine groove and locate in sleeve, determines the groove other end and is connected with bit sub and locates;
Described housing consists of bit sub and sleeve, and a part for pallet axle and valve seat is arranged in bit sub, and ratchet controlling organization is arranged in sleeve, between bit sub and sleeve, by gas thread, is connected; Equally, between drill bit and bit sub, be also connected by gas thread between sleeve and drilling rod, joint is equipped with sealing ring;
Described nozzle is contained on the outer wall of sleeve symmetrically.
Valve seat of the present invention is one, and with the cylinder of nose circle face, the pallet axis hole surrounding of nose circle face also has 4 uniform valve seat through-holes, and cylinder outer wall is provided with 6 valve seat projections.
In the card of sliding plate of the present invention, there are 3 sliding plate holes, in the periphery of sliding plate, are arranged with 2 sliding plate projections; On the dish end face of rotating disk, also there are 3 turret apertures with sliding plate hole same design; During described dial rotation, by controlling dial rotation angle, realize at interval of rotating once, 3 sliding plate holes communicate between two with 3 turret apertures.
Sliding plate projection of the present invention is stuck in the sleeve elongated slot in sleeve, can slide along sleeve elongated slot, circumferentially fixing.On the outer wall of described sleeve, be provided with symmetrically 2 scraper plates.
Tool for grouting in loose coal seam section during drilling of the present invention is arranged between drill bit and drilling rod, is a kind of instrument to broken coal seam slip casting retaining wall of realizing in drilling process.Only need " normally creep into " and " slip casting " two kinds of signals by anti-circulating transfer, can complete blast drilling well and with two kinds of functions of brill slip casting.Normally creep into: circulatory mediator is atomization wind, at the bottom of atomization wind passes through boring ostium, via the annular space between drill bit, drilling rod and boring, take boring mud and flow out.Slip casting: circulatory mediator is Special Drilling Operation liquid, and drilling fluid sprays to hole wall via drilling rod hole, shower nozzle by drilling fluid.Anti-circulation: circulatory mediator is atomization wind, atomization wind is flowed into by drilling rod and boring annular space, and the closed check valve of tool for grouting in loose is exerted pressure and is controlled the commutation of ratchet changement tool for grouting in loose, completes control signal propagation function.Driller judges whether to arrive scall by experience and geologic information, when creeping into soft coal level, driller implements for the first time anti-circulation, at the bottom of hole, transmit " slip casting " signal, by the ratchet controlling organization perception of the tool for grouting in loose of installing between drill bit and drilling rod and keep this signal condition, now normally creep into circulatory mediator pathway closure, slip casting passage is opened, the shower nozzle of installing on the barrel of slurries by passage sleeve, while creeping into hole wall, inject the slurry wall that meets the solid wall degree of depth and requirement of strength, return slag not in this process, boring mud is pressed into hole wall with together with unnecessary drilling fluid by the scraper plate on the outer wall of sleeve, when getting out scall, driller controls again anti-circulation, at the bottom of hole, transmit " normally creeping into " signal, the same ratchet controlling organization perception by tool for grouting in loose also keeps this signal condition, normally creep into circulatory mediator passage and open, slip casting pathway closure, circulatory mediator is by drilling rod hole, the annular space between circulatory mediator passage on tool for grouting in loose and drilling rod and boring of flowing through, takes slag and returns out boring.
A kind of tool for grouting in loose coal seam section during drilling tool of the present invention has the following advantages:
1, tool for grouting in loose of the present invention is directly connected with drill rod thread with drill bit, easy to operate.
2, the present invention adopts mechanical signal transmission and control mode, and tool for grouting in loose dependability, safety are good.
3, drilling fluid channel outlet of the present invention has one way valve, guarantees the one-way flow of drilling fluid.
4, the executing agency of control signal of the present invention adopts class ratchet mechanism, guarantees that the unlatching of drilling fluid passage is correct, reliable.
When 5, the scraper plate clear hole of the present invention's employing on sleeve outer wall is conducive to normally creep into, return slag is smooth.
6, use tool for grouting in loose of the present invention can significantly improve retaining wall efficiency and drilling efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of tool for grouting in loose coal seam section during drilling general structure schematic diagram of the present invention.
Fig. 2 is one way valve of the present invention and ratchet controlling organization surface structure schematic diagram.
Fig. 3 is ratchet controlling organization structural profile schematic diagram of the present invention.
Fig. 4, Fig. 5 are valve seat end face structure of the present invention and valve seat construction schematic diagram.
Fig. 6 is that tube-in-tube structure master of the present invention looks schematic diagram.
Fig. 7 is that the A-A of Fig. 6 is to view.
Fig. 8 is sliding plate structural representation of the present invention.
Fig. 9, Figure 10 are rotating disk end face structure of the present invention and turntable structure schematic diagram.
Figure 11 the present invention determines groove structural representation.
Atomizing air path profile when Figure 12 is the reverse wind transfer control signal of the present invention.
Figure 13 is the flow graph that the present invention normally creeps into atomization wind.
Figure 14 is the flow graph that slurries are crept in slip casting of the present invention.
In above-mentioned figure: 1-pallet axle, 2-valve spring, 3-pallet, 4-valve seat, 5-nozzle, 6-sleeve, 7-ratchet spring, 8-sliding plate, 9-rotating disk, 10-determine groove, 11-rubber pad, 12-bit sub, 13-valve nut, 14-holder axis hole, 15-valve seat projection, 16-valve seat through-hole, 17-scraper plate, 18-sleeve elongated slot, the short groove of 19-sleeve, 20-sliding plate hole, 21-sliding plate projection, 22-turret apertures, 23-hypotenuse groove, 24-determines geosynclinal convex and rises.
The specific embodiment
Below in conjunction with specific embodiment, content of the present invention is described in detail.
Embodiment 1: a kind of tool for grouting in loose coal seam section during drilling of the present invention, its structure as shown in Figure 1, 2, 3.Comprise one way valve, valve seat 4, ratchet controlling organization, housing and nozzle 5, described one way valve is comprised of pallet axle 1, valve spring 2, pallet 3, rubber pad 11, valve nut 13, described valve seat 4 is a cylinder, there has been the band hypotenuse straight trough of guiding and position-limiting action cylinder one end, the other end is with nose circle face, there is pallet axis hole 14 at nose circle face center, and pallet axle 1 is arranged in described pallet axis hole 14, by valve nut 13, valve spring 2, pallet 3, rubber pad 11 is spacing on pallet axle 1;
Ratchet controlling organization in the present invention, referring to Fig. 2,3, by ratchet spring 7, sliding plate 8, rotating disk 9, determine groove 10 and form, sliding plate 8 end faces and rotating disk 9 end faces are isometrical, sliding plate 8 one sides are provided with ratchet spring 7, opposite side is provided with rotating disk 9, and the other end of rotating disk 9 is with relative with the band hypotenuse notch of valve seat 4 one end with hypotenuse groove 23; Determine groove 10 and be enclosed within the outside of valve seat 4 and rotating disk 9, determining groove 10 outer rings, one end is provided with symmetrically 2 and determines geosynclinal convex and play 24, determine geosynclinal convex and rise in the 24 short grooves 19 of sleeve that are stuck in sleeve 6, by determining geosynclinal convex, play 24 and make to determine groove and locate in sleeve 6, determine groove 10 other ends and be connected and locate with bit sub 12;
Described housing consists of bit sub 12 and sleeve 6, and a part for pallet axle 1 and valve seat 4 is arranged in bit sub 12, and ratchet controlling organization is arranged in sleeve 6, between bit sub 12 and sleeve 6, by gas thread, is connected; Equally, between drill bit and bit sub 12, be also connected by gas thread between sleeve 6 and drilling rod, joint is equipped with sealing ring;
Described nozzle 5 is contained on the barrel of sleeve 6 symmetrically.
Referring to Fig. 4,5, valve seat 4 in the present invention is one, and with the cylinder of nose circle face, there is pallet axis hole 14 at nose circle Mian center, and surrounding also has 4 uniform valve seat through-holes 16, cylinder outer wall is provided with 6 valve seat projections 15, and one end of cylinder has been provided with the band hypotenuse straight trough of guiding and position-limiting action.
Referring to Fig. 6,7,2 nozzles 5 are housed on the round wall of the sleeve 6 in the present invention symmetrically, on outer wall, be provided with symmetrically 2 scraper plates 17, scraper plate 17 will be pressed into the drill hole wall in broken coal seam together with the boring mud drilling fluid unnecessary with slip casting process; The inwall of sleeve 6 is provided with sleeve elongated slot 18, the short groove 19 of sleeve, and sleeve elongated slot 18 is for locating sliding plate 8, and the short groove 19 of sleeve is for locating groove 10.
Referring to Fig. 8,9 and 10, in the card of sliding plate 8, there are 3 sliding plate holes 20, in the periphery of sliding plate 8, be arranged with 2 sliding plate projections 21, sliding plate projection is stuck in sleeve inner sleeve elongated slot 18, and sliding plate projection can be slided along sleeve elongated slot 18, circumferentially fixing; On the dish end face of rotating disk 9, also there are 3 turret apertures 22 with sliding plate hole 20 same design; When described rotating disk 9 rotates, by rotational angle, controlled at interval of rotating once, 3 sliding plate holes 20 are realized and being communicated between two with 3 turret apertures 22, rotate 3 sliding plate holes 20 for the 1st time and realize and communicating between two with 3 turret apertures 22, and the 2nd rotation is obstructed.
Referring to Figure 11, the one end of determining groove 10 has 2 to determine geosynclinal convex and play 24, determines geosynclinal convex and rises in the 24 short grooves 19 of sleeve that can be stuck in sleeve, by determining geosynclinal convex, plays 24 and makes to determine the location of groove in sleeve 6, determines groove 10 other ends and is connected and locates with bit sub 12.
Embodiment 2: a kind of tool for grouting in loose coal seam section during drilling of the present invention is used for to the drilling well of down-hole coal bed gas extraction frangible section and other under balance pressure drilling engineering.During use by anti-circulating transfer: the order of " normally creeping into " and " slip casting is crept into ", the transmission method of control signal is identical, circulatory mediator is all atomization wind, pressure is at 0.5-0.7MPa, the distinguished and admirable forward of " normally creeping into " atomization, as shown in figure 12.
While transmitting " normally creeping into " or " slip casting is crept into " signal, atomization is distinguished and admirable all reverse, the annular space by drilling rod and boring flows into, through drill bit, enter drilling rod, the closed check valve being formed by pallet axle 1, valve spring 2, pallet 3, rubber pad 11 and valve nut 13, under the effect of wind-force, valve seat 4 moves right, promote rotating disk 9 and move to right, sliding plate 8 moves to right and compresses ratchet spring 7; When rotating disk 9 when hypotenuse groove 23 and the inclined-plane of determine groove 10 one end are on the same face, under the effect of spring, rotating disk 9 rotations once, just turn over an angle, make to enter to determine in another groove of groove with the oblique peak dot landing of hypotenuse groove.Once, rotating disk rotates and makes it can realize 3 sliding plate holes 20 and 3 turret apertures 22 to realize and communicating between two each anti-loop control dial rotation for the first time, and this is that the state that normally creeps into is also the original state of tool for grouting in loose.Rotating disk rotates for the second time 3 sliding plate holes 20 and is mutually blocked with rotating disk by sliding plate with 3 turret apertures 22 and do not communicate, and this is slip casting state.
While " normally creeping into ", when starting to creep into, the state of tool for grouting in loose should keep 3 sliding plate holes 20 and 3 turret apertures 22 to realize communicating state between two, now atomization wind is flowed through the hole of 9 of ratchet spring 7, sliding plate 8 and rotating disks to one way valve by drill pipe bore, under wind-force effect, one way valve is opened, atomization wind continue the to flow through annular space of drill bit, drilling rod and boring, then flows out.As shown in figure 13, in this process, blast is not enough to open nozzle, so nozzle is in closed condition.
When boring chance weak seam, first carry out reversing operation one time, at the bottom of hole, transmit " slip casting " signal, with 3 sliding plate holes 20 in brill tool for grouting in loose and the passage of 3 turret apertures 22, be blocked, atomization wind is in obstructed state; Open grouting pump, slurries are flowed into by drill pipe bore, and because turret apertures 22 and 20, sliding plate hole do not communicate, in closed condition, under slurries pressure-acting, nozzle 5 is opened, and to hole wall spray form slurries, realizes slip casting retaining wall object.As shown in figure 14.
After slip casting finishes, then carry out reversing operation one time, tool for grouting in loose recovers the state that normally creeps into.
A kind of tool for grouting in loose coal seam section during drilling of the present invention is applicable to the drilling well of down-hole coal bed gas extraction frangible section and other under balance pressure drilling engineering.

Claims (4)

1. a tool for grouting in loose coal seam section during drilling, comprise one way valve, valve seat, ratchet controlling organization, housing and nozzle, it is characterized in that: described one way valve is comprised of pallet axle, valve spring, pallet, rubber pad, valve nut, described valve seat is a cylinder, there has been the band hypotenuse straight trough of guiding and position-limiting action cylinder one end, the other end is with nose circle face, there is pallet axis hole at nose circle face center, pallet axle is arranged in described pallet axis hole, by valve nut, valve spring, pallet, rubber pad is spacing on pallet axle;
Described ratchet controlling organization by ratchet spring, sliding plate, rotating disk, determine groove and form, sliding plate and rotating disk all have an end face, sliding plate end face and rotating disk end face are isometrical, sliding plate one side is provided with ratchet spring, opposite side is provided with rotating disk, and the other end of rotating disk is with relative with the band hypotenuse notch of valve seat one end with hypotenuse groove; Determine groove and be enclosed within the outside of valve seat and rotating disk; Under the effect of wind-force, valve seat moves right, and promotes rotating disk and moves to right, the sliding plate compression ratchet spring that moves to right; When rotating disk when hypotenuse groove and the inclined-plane of determining groove one end are on the same face, under the effect of ratchet spring, dial rotation once, just turns over an angle, makes to enter to determine in another groove of groove with the oblique peak dot landing of hypotenuse groove; In the card of described sliding plate, there are 3 sliding plate holes, in the periphery of sliding plate, are arranged with 2 sliding plate projections; On the dish end face of rotating disk, also there are 3 turret apertures with sliding plate hole same design; During described dial rotation, by controlling dial rotation angle, realize at interval of rotating once, 3 sliding plate holes communicate between two with 3 turret apertures; The one end of determining groove has 2 to determine geosynclinal convex and rise, and determines geosynclinal convex and rises in the short groove of the sleeve being stuck in sleeve, by determining geosynclinal convex, rises and makes to determine groove and locate in sleeve, determines the groove other end and is connected with bit sub and locates;
Described housing consists of bit sub and sleeve, and a part for pallet axle and valve seat is arranged in bit sub, and ratchet controlling organization is arranged in sleeve, between bit sub and sleeve, by gas thread, is connected; Equally, between drill bit and bit sub, be also connected by gas thread between sleeve and drilling rod, joint is equipped with sealing ring;
Described nozzle is contained on the outer wall of sleeve symmetrically.
2. a kind of tool for grouting in loose coal seam section during drilling according to claim 1, it is characterized in that: described valve seat be one with the cylinder of nose circle face, the pallet axis hole surrounding of nose circle face also has 4 uniform valve seat through-holes, and cylinder outer wall is provided with 6 valve seat projections.
3. a kind of tool for grouting in loose coal seam section during drilling according to claim 1, is characterized in that: described sliding plate projection is stuck in the sleeve elongated slot in sleeve, can slide along sleeve elongated slot, circumferentially fixing.
4. a kind of tool for grouting in loose coal seam section during drilling according to claim 1, is characterized in that: on the outer wall of described sleeve, be provided with symmetrically 2 scraper plates.
CN201110254159.2A 2011-08-31 2011-08-31 Tool for grouting in loose coal seam section during drilling Expired - Fee Related CN102337858B (en)

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CN102337858B true CN102337858B (en) 2014-04-09

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CN103267151B (en) * 2013-05-28 2015-03-11 天津市水利工程有限公司 Lubrication slurry grouting jet nozzle used for culvert jacking
CN103924938B (en) * 2014-05-09 2016-01-20 重庆大学 A kind of coal mine gas drainage holes scouring bit, hole cleaning device and clear hole method
CN104405332B (en) * 2014-10-15 2016-08-31 中国地质大学(武汉) A kind of two position switching valve devices for non-particulate slip casting
CN104747075B (en) * 2015-02-14 2017-01-25 河南理工大学 Anti-collapsing drilling method for grout spraying of soft coal seam
CN104879088B (en) * 2015-05-29 2017-07-04 辽宁工程技术大学 A kind of filling guard aperture method for hyposmosis weak seam mash gas pumping drilling
CN111878041B (en) * 2020-08-13 2021-05-18 北京方圆天地油气技术有限责任公司 Coal bed gas horizontal well underbalance drilling system and method thereof

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