CN208152959U - A kind of mixed gas connector of multi-cycle runner drilling tool - Google Patents

Abstract

The utility model discloses a kind of mixed gas connectors of multi-cycle runner drilling tool, including top end pipe, bottom end pipe, suspension joint and connector outer tube, top end pipe and bottom end pipe are fixed by suspension joint and are mounted in connector outer tube after being connected to, and outer tunnel is formed with connector outer tube wall, top end pipe is three-layer pipe wall construction, several gas mixed holes are offered on its innermost layer tube wall, bottom end pipe is two layers of structural pipe wall.The technical solution of the mixed gas connector of the multi-cycle runner drilling tool of the utility model is applied in multi-cycle runner drilling tool, four runners of drilling tool can be switched to three runners, is neither connected to runner drilling tool, and each runner is mutually indepedent, does not interfere with each other.The effect of gas mixed hole is that the lift-gas injection runner in the coaxial four runners drilling rod by multi-cycle runner drilling tool is connected to gaslift sediment outflow runner, by the compressed gas in lift-gas injection runner and the drilling fluid mixed in gaslift sediment outflow runner, it is final on return and complete gas lift reverse circulation sediment outflow.

Description

A kind of mixed gas connector of multi-cycle runner drilling tool

Technical field

The utility model relates to drilling engineering technical fields, and in particular to a kind of mixed gas connector of multi-cycle runner drilling tool.

Background technique

Currently, both at home and abroad there are many kinds of big size hole boring methods, be broadly divided into rotary drilling, rotary drilling rig drilling well, Drilling and blasting method sinking shaft (mine construction), shaft sinking shaft drilling (mine construction), impact rotating (or punching rotation) drilling well etc..

(1) rotary drilling

Rotary drilling uses the rock crushing tool based on cutting in a manner of broken rock such as rock bit, roller cutter bit, drag bit Implement drilling well, can be used two kinds of drilling technologies of mud direct circulation and gas lift reverse circulation.It is difficult if drilling duty (torque) is insufficient When being drilled to the ability of well with realization one, the mode that multistage reaming usually also can be used completes drilling well.The existing country is followed using air lift reverse Ring rotary system maximum can boreThe wellbore of diameter, theory are drilled up to 1000m (such as Zhong Meitezao company AD130/1000 type large size shaft drilling machine).But this drilling mode recycles the requirement for taking sand although meeting big size hole, But it is only suitable for boring soft rock, is completely unsuitable for the drilling of ground consisting of hard rock.

(2) rotary drilling rig drilling well

Rotary drilling rig drilling well in such a way that " brill+digging " is this based on.Rotary drilling rig can realize that the drilling well of 4~5m diameter is made at present Industry.But the engineering method still lays particular emphasis on soft rock drilling, very low in the drilling efficiency of hard formation, and maximum drilling depth is also in 1500m Within (such as 31 heavy industry SR630RC8 type rotary drilling rigs, maximum drilling well diameterMost wammel depth 140m).This method Be not able to satisfy hard rock, deep-well, efficient drilling well requirement.

(3) shaft sinking shaft drilling, drilling and blasting method sinking shaft (mine construction)

Shaft sinking shaft drilling still belongs to mine construction field, this method is commonly used in soft rock drilling.And drilling and blasting method is mine A kind of method of Blasting Excavation hard rock of mountain construction field.This method shaft building is at high cost, the period is long, and and is not belonging to drilling well scope.

(4) impact rotating (or punching rotation) drilling well

Impact rotating (or punching rotation) drilling well is mainly using pneumatic hammer as rock crushing tool.The hard-rock boring efficiency of pneumatic hammer is very Height, efficiency maximum can be more conventional 10 times of rotary drilling raising or more.Currently, the pneumatic hammer of domestic large diameter drilling mainly collects In in the fields such as oil drilling, pile foundation engineering and coal mine drilling well, mine rescue.

1. major diameter direct circulation pneumatic hammer (monomer hammer/cluster type hammer)

Currently, oil/gas drilling industry direct circulation pneumatic hammer drilling well maximum gauge is usuallyConsumption tolerance 400~ 500m3/min, drilling depth capacity are no more than 600m.Pile foundation engineering field uses maximum gauge direct circulation pneumatic hammer (usual φ 800mm~φ 1200mm) cooperation rotary drilling rig implementation drilling well, depth capacity is less than 100m.

Using existing direct circulation pneumatic hammer implement big size hole drilling well, needed for it is large-minded, number of devices is more, at high cost Deng at common problem.Meanwhile sand discharge is very difficult when big size hole direct circulation pneumatic hammer drilling well, not only energy consumption is high, and In the presence of very big downhole safety hidden danger.And high-speed gas is obvious to borehole wall erosion, it is easy to the complexity such as borehole well instability be caused to ask Topic.Although the engineering method efficiently, is not able to satisfy the requirement of large scale hard rock deep drilling still.

2. Large Diameter Reverse circulation air hammer (monomer hammer/cluster type hammer)

Currently, domestic possess mainly having for Large Diameter Reverse circulation air hammer drilling technology：Middle petroleum river celebrating drilling project has (be related to notification number is CN105113978B to φ 450~700mm wellbore monomer Large Diameter Reverse circulation air hammer of limit company, specially A kind of Chinese invention patent of benefit entitled " monomer Large Diameter Reverse circulation air hammer that can be used for big size hole drilling well "；And Notification number is CN105178859A, and patent name is a kind of " the self-priming reacting cycle gas drilling of full well section for oil/gas drilling The Chinese invention patent of system ")；Φ 500~800mm wellbore reacting cycle of Xi'an Research Institute of China Coal Technology & Engineering Group Co., Ltd. Cluster type pneumatic hammer (is related to application No. is 201410747538.9, patent name：" reaming reacting cycle cluster type down-hole hammer " Chinese invention benefit application；And notification number is CN204326956U, patent name is a kind of " reaming reacting cycle cluster type down-the-hole The Chinese invention patent of hammer ").Large Diameter Reverse circulation air hammer drill well, needs mating using double-wall drill pipe, is real using pure gas Apply a kind of big size hole hard rock drilling technology of driving pneumatic hammer and tape loop sand.But at present the technology by well depth, The restriction of the conditions such as layer water outlet, leakage, and still it is in the experimental study stage.It is reported that the technology is maximum at present to test or applies well Deep to be no more than 800m, borehole diameter is no more than Φ 800mm.

3. closed cycle triple channel reacting cycle pneumatic hammer

Jilin University mutually ties the efficient hard-rock boring advantage of pneumatic hammer with the protection borehole wall advantage of mud direct circulation drilling well It closes, (its notification number is CN102966304B, proprietary term to utility model closed cycle triple channel reacting cycle pneumatic hammer drilling technology The referred to as Chinese invention patent of " mud off air down-hole hammer drilling tool and drilling technology "), however the patented technology still uses Be that sand technique is taken in mud direct circulation, therefore this method is only only suitable for the hard rock drilling well of numbers of small-sized wells eye.

Summary of the invention

The purpose of the utility model is to provide a kind of multi-cycle runner well systems for big size hole hard rock drilling well Multi-cycle runner drilling tool mixed gas connector, provide a kind of effective solution for big size hole deep-well hard rock, no Drilling efficiency only can be improved, while energy consumption can also be reduced, save overall cost.

The utility model is achieved through the following technical solutions above-mentioned purpose：

A kind of mixed gas connector of multi-cycle runner drilling tool, including outside top end pipe, bottom end pipe, suspension joint and connector Pipe, top end pipe and bottom end pipe are fixed by suspension joint and are mounted in connector outer tube after being connected to, and in connector outer tube Wall forms outer tunnel, and top end pipe is three-layer pipe wall construction, offers several gas mixed holes on innermost layer tube wall, bottom end pipe is Two layers of structural pipe wall.

Further, circular hole channel is provided in the middle part of suspension joint, it is circumferential coaxially to offer discontinuous circular passage, it hangs Connector outer periphery is provided with suspension boss.

Further, the three-layer pipe wall of top end pipe from outside to inside be outer tube wall A, intermediate tube wall and inner tubal wall A, adjacent tubes Outer tunnel A, intermediate channel are formed between wall, are internal channel A inside inner tubal wall, gas mixed hole is provided on inner tubal wall.

Further, by welding or being threadedly coupled, outer tunnel A and internal channel A between top end pipe and suspension joint It is connected to respectively with the circular passage of suspension joint and circular hole channel, intermediate channel bottom blocks.

Further, bottom end pipe successively includes outer tube wall B and inner tubal wall B from outside to inside, forms outer tunnel between two tube walls B, inner tubal wall inside are internal channel B.

Further, by welding or being threadedly coupled, outer tunnel B and internal channel B between bottom end pipe and suspension joint It is connected to respectively with the circular passage of suspension joint and circular hole channel.

Further, connector outer tube both ends have screw thread, four directions or six square joints.

The technical solution of the mixed gas connector of the multi-cycle runner drilling tool of the utility model is applied to multi-cycle runner drilling tool In, four runners of drilling tool can be switched to three runners, be neither connected to runner drilling tool, and each runner is mutually indepedent, does not do mutually It disturbs.The effect of gas mixed hole is lift-gas injection runner and gaslift sediment outflow stream in the coaxial four runners drilling rod by multi-cycle runner drilling tool Road connection, by lift-gas injection runner compressed gas and gaslift sediment outflow runner in drilling fluid mixed, mixed air-liquid, Gu three-phase flow averag density rapid drawdown, while in bore hole annulus and gaslift sediment outflow runner under differential pressure action, shaft bottom drilling fluid can be taken Band is returned on landwaste that enclosed reacting cycle pneumatic hammer is crushed, completes gas lift reverse circulation sediment outflow.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the mixed gas connector of the utility model；

Fig. 2 is path and the structural schematic diagram of embodiment multi-cycle runner drilling tool；

Fig. 3 is the overall structure diagram of embodiment well system；

Fig. 4 is schematic cross-section at A-A in Fig. 2；

Fig. 5 is schematic cross-section at B-B in Fig. 2；

Fig. 6 is the structural schematic diagram of coaxial four runners drilling rod；

Fig. 7 is the structural schematic diagram of coaxial three runners drilling rod；

Fig. 8 is schematic cross-section at C-C in Fig. 1.

In figure, 1, underground air hammer air injection unit；2, underground air hammers compress cell into shape；3, underground air hammers pressure relief mechanism into shape； 4, underground air hammers gas flow control valve into shape；5, underground air hammers gas flow meter into shape；6, mud circulating system；7, underground air is hammered into shape Ground injecting gas manifold；8, mud Return Line；9, rig floor；10, sediment outflow hard tube line；11, roller square filling core；12, coaxial four runner Kelly bar；13, underground air hammers high-pressure gas injection hose into shape；14, sediment outflow soft pipeline；15, erosion resistance gooseneck；16, tap；17, Four circulatory flow gas injection devices；18, gaslift high-pressure gas injection hose；19, underground air hammers exhaust hose into shape；20, gaslift ground injecting gas pipe It converges；21, bore hole annulus；22, coaxial four runners drilling rod；23, coaxial three runners drilling rod；24, coaxial three runners drill collar；25, enclosed Reacting cycle pneumatic hammer；26, lift-gas injection unit；27, gaslift compress cell；28, gaslift pressure relief mechanism；29, lift-gas injection flow Control valve；30, lift-gas injection flowmeter；31, underground air hammers gas injection runner into shape；32, underground air hammers grate flow channel into shape；33, gaslift Gas injection runner；34, gas mixed nub structure；341, top end pipe；3411, outer tunnel A；3412, intermediate channel；3413, internal channel A； 342, bottom end pipe；3421, outer tunnel B；3422, internal channel B；343, suspension joint；3431, circular hole channel；3432, annular is logical Road；3433, boss is hung；35, gaslift sediment outflow runner；50, four runner drilling rod outer tube；51, four the first inner tube of runner；52, four stream The second inner tube of road；53, four runner third inner tube；54, inner tube public affairs pipe nipple；55, inner tube mother pipe nipple；60, three runner drilling rod outer tube； 61, three the first inner tube of runner；62, three the second inner tube of runner；63, the male pipe nipple 64 of inner tube, inner tube mother's pipe nipple；80, connector outer tube； 81, outer tube wall A；82, intermediate tube wall；83, inner tubal wall A；84, outer tube wall B；85, inner tubal wall B.

Specific embodiment

The utility model is described in further detail with reference to the accompanying drawings and embodiments.

As illustrated in figures 1 and 8, a kind of multi-cycle runner drilling tool of the utility model mixes gas connector 34, including top end pipe 341, bottom end pipe 342, suspension joint 343 and connector outer tube 80, top end pipe 341 and bottom end pipe 342 pass through suspension joint 343 fix and are mounted in connector outer tube 80 after being connected to, and form outer tunnel 345, top end pipe 341 with 80 inner wall of connector outer tube For three-layer pipe wall construction, several gas mixed holes 344 are offered on innermost layer tube wall, bottom end pipe 342 is two layers of structural pipe wall.Its Both ends are correspondingly connected with coaxial four runners drilling rod 22 and coaxial three runners drilling rod 23 respectively, will easily turn three streams by four runners Road.

Circular hole channel 3431 is provided in the middle part of suspension joint, it is circumferential coaxially to offer discontinuous circular passage 3432, it hangs Connector outer periphery is provided with suspension boss 3433.Suspension joint 343 is installed in connector outer tube 80 by hanging boss 3433.

The three-layer pipe wall of top end pipe 341 from outside to inside is outer tube wall A81, intermediate tube wall 82 and inner tubal wall A83, adjacent tubes Outer tunnel A3411, intermediate channel 3412 are formed between wall, are internal channel A3413 inside inner tubal wall 81, gas mixed hole is provided with inner tubal wall On 83.

By welding or being threadedly coupled, outer tunnel A3411 and internal channel between top end pipe 341 and suspension joint 343 A3413 is connected to the circular passage 3431 of suspension joint 343 and circular hole channel 3432 respectively, and 3412 bottom of intermediate channel blocks.

Bottom end pipe 342 successively includes outer tube wall B84 and inner tubal wall B85 from outside to inside, forms outer tunnel between two tube walls B3421 is internal channel B3422 inside inner tubal wall 85.

By welding or being threadedly coupled, outer tunnel B84 and internal channel B85 between bottom end pipe 342 and suspension joint 343 It is connected to respectively with the circular passage 3431 of suspension joint 343 and circular hole channel 3432.

80 both ends of connector outer tube have screw thread, four directions or six square joints.Threadedly four runners with top respectively Drilling rod is connected with three runner drilling rods of lower section, and screw thread can be one end pin thread, one end female thread perhaps both ends pin thread or both ends Female thread；Can also by way of four directions or the grafting such as six square joints respectively with four runner drilling rods of top and three runners of lower section Drilling rod connection, connector outer tube 80 are six square sections, are also possible to four square sections.

The multi-cycle runner drilling tool that gas connector is mixed using the utility model, is applied particularly to big size hole hard rock drilling well Multi-cycle runner well system, the system include that underground air hammer manifold of ground and equipment, gaslift manifold and equipment, drilling well drive Device, multi-cycle runner drilling tool and mud recycle unit 6, underground air hammers manifold of ground into shape and equipment and gaslift manifold and equipment are equal By the connection corresponding with multi-cycle runner drilling tool of drilling well driving device, mud recycle unit 6 passes through erosion resistance gooseneck 15 and row Sandpipe line 14 is connect with drilling well driving device.

As shown in Figures 2 to 7, the multi-cycle runner drilling tool of gas connector is mixed using the utility model, including from top to bottom according to Coaxial four runners drilling rod 22, coaxial three runners drilling rod 23, coaxial three runners drill collar 24 and the enclosed reacting cycle pneumatic hammer of secondary connection 25, coaxial four runners drilling rod, 22 top is connected to drilling well driving device, and coaxial four runners drilling rod, 22 bottom passes through the utility model Mixed gas connector 34 be connected to coaxial three runners drilling rod 23.

As shown in Fig. 2, Fig. 4 and Fig. 6, coaxial four runners drilling rod 22 is coaxial four-way structure, and ecto-entad is respectively well Lower pneumatic hammer grate flow channel 32, underground air hammer gas injection runner 31, lift-gas injection runner 33 and gaslift sediment outflow runner 35, underground are empty Pneumatic hammer gas injection runner 31 and underground air hammer manifold are connected to equipment, and lift-gas injection runner 33 is connected to gaslift manifold with equipment, Gaslift sediment outflow runner 33 is connected to drilling well driving device.Specifically, as shown in fig. 6, coaxial four runners drilling rod 22 includes four runners Drilling rod outer tube 50, four runner the first inner tubes 51, four runner the second inner tubes 52 and four runner third inner tubes 53.Coaxial four stream as a result, Drilling rod 22 ecto-entad in road forms underground air hammer grate flow channel 32, underground air hammers gas injection runner 31, lift-gas injection runner 33 into shape With gaslift sediment outflow runner 35.Wherein the one of four runner the first inner tubes 51, four runner the second inner tubes 52 and four runner third inner tubes 53 It is corresponding that end is respectively fixed with diameter, and it is corresponding that the other end is respectively fixed with diameter, is used for both ends respectively with coaxial four Runner kelly bar 12 and mixed gas connector 34 are plugged and fixed.

As shown in Fig. 2, Fig. 5 and Fig. 7, coaxial three runners drilling rod 23 and coaxial three runners drill collar 24 are coaxial triple channel knot Structure, ecto-entad are respectively underground air hammer grate flow channel 32, underground air hammer gas injection runner 31 and gaslift sediment outflow runner 35, well Lower pneumatic hammer grate flow channel 31 is connected to underground air hammer gas injection runner 31 in the bottom of multi-cycle runner drilling tool.As shown in fig. 7, Wherein coaxial three runners drilling rod 23 includes three runner drilling rod outer tubes 60, three runner the first inner tubes 61 and three the second inner tubes of runner 62. Coaxial three runners drilling rod, 23 ecto-entad forms underground air hammer grate flow channel 32 as a result, underground air hammers 31 and of gas injection runner into shape Gaslift sediment outflow runner 35.One end of three runner the first inner tubes 61 and three the second inner tubes of runner 62 passes through the side of screw thread or welding respectively Formula is fixed with that diameter is corresponding, and the other end is respectively fixed with the corresponding inner tube mother pipe nipple 64 of diameter, is used for both ends difference It is plugged and fixed with mixed gas connector 34 and coaxial three runners drill collar 24.

Four runner drilling rod outer tubes 50 of coaxial four runners drilling rod 22 and three runner drilling rod outer tubes of coaxial three runners drilling rod 23 60 length can be arranged according to actual well drilled situation, and both ends are special threaded connection, a pin thread, a female thread, both ends It can be the inserting mode connection in six sides or four directions etc.Own in coaxial four runners drilling rod 22 and coaxial three runners drilling rod 23 The male pipe nipple of inner tube and inner tube mother's pipe nipple have a wiper block, wiper block can be three pieces or four pieces etc. according to actual use demand Deng the wiper block of inner tube public affairs pipe nipple plays the role of righting tube wall, inner tube mother pipe nipple righting tube wall and suspension.

Underground air hammer grate flow channel 32, the underground air hammer of coaxial four runners drilling rod 22 and coaxial three runners drilling rod 23 are infused Flow channel 31 and gaslift sediment outflow runner 35, each runner are to be respectively communicated with.

The drilling well driving device of well system can use tap 16, coaxial four runners kelly bar 12 and roller square filling core 11 combination, can also be by the way of top drive and gas injection device.The drilling well driving device that Fig. 3 show well system utilizes The case where coaxial four runners kelly bar 12 is the tap 16 of drilling well driving device and gas injection above coaxial four runners kelly bar 12 Device 17, gas injection device 17 are four circulatory flow gas injection devices, are mounted on 16 bottom of tap, 17 bottom of gas injection device is equipped with coaxial four Runner kelly bar 12, gas injection device 17 are connected to by coaxial four runners kelly bar with multi-cycle runner drilling tool；Or drilling well driving dress It is set to top driving, does not just need coaxial four runners kelly bar 12 and roller square filling core 11 at this time.It drives lower section and connects gas injection device in top 17, gas injection device 17 is four circulatory flow gas injection devices, and top, which is driven, to be connected to by gas injection device 17 with multi-cycle runner drilling tool.Gas injection device 17 is also It is communicated with underground air hammer exhaust hose 19.

Coaxial four runners kelly bar 12 is coaxial four-way structure as coaxial four runners drilling rod 22.It can be four directions Drilling rod is also possible to hexagonal kelly.Its ecto-entad is respectively underground air hammer grate flow channel 32, underground air hammer gas injection runner 31, lift-gas injection runner 33 and gaslift sediment outflow runner 35.

The underground air hammer manifold of ground and equipment of well system include sequentially connected underground air hammer air injection unit 1, Underground air hammers compress cell 2, underground air hammer pressure relief mechanism 3, underground air hammer gas flow control valve 4, underground air hammer into shape Gas flow meter 5, underground air hammer ground injecting gas manifold 7 and underground air hammer high-pressure gas injection hose 13 into shape, and underground air hammers high pressure into shape Gas injection hose 13 is connect with gas injection device 17.

The gaslift manifold of well system and equipment include sequentially connected lift-gas injection unit 26, gaslift compress cell 27, Gaslift pressure relief mechanism 28, lift-gas injection flow control valve 29, lift-gas injection flowmeter 30, gaslift ground injecting gas manifold 20 and gaslift High-pressure gas injection hose 18, gaslift high-pressure gas injection hose 18 are connect with gas injection device 17.

Mud circulating system 6 is connected to by mud Return Line 8 with the bore hole annulus 21 of drilling well.

It can be specifically realized in using the well system configuration of the utility model：Underground air hammers relevant ground into shape Injection device, injection pipeline are connect with exhaust line.Underground air hammers relevant ground injection device, that is, underground air into shape and hammers gas injection into shape Unit 1 and underground air hammer compress cell 2 (including air compressor and supercharger) are the work of enclosed reacting cycle pneumatic hammer 25 Offer high pressure gas is provided；Underground air hammers pressure relief mechanism 3 into shape and the underground air hammer adjustment injected gas volume of gas flow control valve 4 is big It is small, while the pressure in the related runner of underground air hammer is discharged, belong to security control mechanism.Underground air hammer into shape air injection unit 1 with Underground air is hammered pressure relief mechanism 3 into shape and is connected by high pressure line.Underground air hammers 3 downstream direction of pressure relief mechanism installation underground air hammer into shape Gas flow meter 5, for measuring the tolerance for being sent into underground air hammer；The underground air hammers 5 upstream of gas flow meter into shape and connects underground Pneumatic hammer pressure relief mechanism 3, downstream connection underground air hammer ground injecting gas manifold 7 into shape.Underground air hammers ground injecting gas manifold 7 and installation into shape Underground air hammer high-pressure gas injection hose 13 on rig floor 9 is connected.Underground air hammers exhaust hose 19 into shape directly and under tap 16 The gas injection device 17 of side is connected.

The relevant ground injection device of gaslift, injection pipeline are connect with sediment outflow pipeline.The relevant ground injection device of gaslift That is lift-gas injection unit 26 and gaslift compress cell 27 (including air compressor and supercharger) are the formation of gas lift reverse circulation High pressure gas is provided.Gaslift pressure relief mechanism 28 and gaslift gas flow control valve 29 adjust injected gas volume size, while outgassing is lifted Pressure in runner, belongs to security control mechanism；Lift-gas injection unit 26 is connect with gaslift pressure relief mechanism 28 by high pressure line； 28 downstream direction of gaslift pressure relief mechanism installs lift-gas injection flowmeter 30, for measuring the tolerance for being used for gaslift.The lift-gas injection 30 upstream of flowmeter connects gaslift pressure relief mechanism 28, connects gaslift ground injecting gas manifold 20 downstream.Gaslift ground injecting gas manifold 20, which lift high-pressure gas injection hose 18 with the high pressure gas being mounted on drilling derrick, is connected.14 upstream of gas lift reverse circulation sediment outflow pipeline and water The erosion resistance gooseneck 15 of 16 top of faucet is connected, and downstream is connected in mud circulating system 6 by one section of sediment outflow hard tube line 10. It is re-injected among bore hole annulus 21 by the cleaned drilling fluid of mud circulating system 6 by mud Return Line 8, with true Drilling liquid in bore hole annulus is protected to maintain within the scope of reasonable altitudes.

Drilling well driving device can be using the combination side of tap 16, coaxial four runners kelly bar 12 and roller square filling core 11 Formula can also drive this mode using top, and top, which is driven, can be realized simultaneously tap 16, coaxial four runners kelly bar 12 and roller side The function of 11 three of bushing.Tap 16 (or top is driven) is connect with multi-cycle drilling rig.Tap 16 (or top is driven) upper end connects Special erosion resistance gooseneck 15 is connect, the outlet of erosion resistance gooseneck 15 is connected by union and high pressure gas lift reverse circulation sediment outflow pipeline 14 It connects.If tap, then lower end is connect by screw thread or flange with gas injection device 17, tap and gas injection device 17 can also be added Work is fabricated to an entirety, i.e. four runner gas injection taps.17 lower end of gas injection device passes through screw thread and coaxial four runners kelly bar 12 Left-hand thread connection, coaxial four runners kelly bar, 12 lower section connection side protects connector, and connect with coaxial four runners drilling rod, 22 right-hand thread.If Top is driven, then pushes up drive lower end and pass through right-hand thread connection gas injection device 17 and coaxial four runners drilling rod 22.22 lower section of coaxial four runners drilling rod according to It is secondary to connect coaxial three runners drilling rod 23, coaxial three runners drill collar 24 and enclosed reacting cycle pneumatic hammer 25.

Underground air hammers air injection unit 1 into shape by several air-compressor sets at underground air hammers compress cell 2 into shape by several pressurization units It should determine according to engineering is practical at, specific number of devices.Underground air hammers air injection unit 1 into shape and underground air hammers compress cell 2 into shape Required high pressure gas is provided for the work of enclosed reacting cycle pneumatic hammer 25.Underground air is hammered air injection unit 1 into shape and is let out with underground air hammer Press mechanism 3 is connected by high pressure line, and the pressure rank of the high pressure line is usually less than 21MPa.Underground air hammers pressure release machine into shape Structure 3 is made of a series of valves, silencing equipment, pressure gauge etc., belongs to safety device, for discharge system pressure and adjust into Enter the tolerance of system.Underground air hammers 2 downstream of pressure relief mechanism setting underground air into shape and hammers gas flow control valve 4 and underground air hammer into shape Gas flow meter 5, for adjusting and measuring the practical tolerance into underground enclosed reacting cycle pneumatic hammer 25.Underground air hammers ground into shape Injection-gas manifold 7 is high pressure pipe joint, and pressure rank is usually less than 21MPa, by a series of high pressure hard tube line, high-pressure hose Line, crossover sub etc. are connected and composed by union, and soft pipeline can be used in part of the high-pressure gas injection pipeline on drilling derrick, can also Using hard tube line, depending on this is by on-site actual situations.The underground air hammer high-pressure gas injection hose 13 being connected with gas injection device 17 is pressed Power rank is usually less than 21MPa, and the two is connected by union.Gas injection device 17 is four-way structure, the upper end and tap or Top drives 16 and is connected, and lower end is connected with coaxial four runners drilling rod 22 (or coaxial four runners kelly bar 12).The effect of gas injection device 17：One It is the underground air that the high pressure gas from underground pneumatic hammer high-pressure gas injection hose 13 is assigned to coaxial four runners kelly bar 12 It hammers into shape in gas injection runner 31, second is that the gas being discharged from underground enclosed reacting cycle pneumatic hammer 25 is soft by underground air hammer exhaust Except 19 discharge system of pipe, third is that the high pressure gas from gaslift high-pressure gas injection hose 18 is assigned to coaxial four runners kelly bar In 12 lift-gas injection runner 33, fourth is that tap 16 is connected with the gaslift sediment outflow runner 35 of coaxial four runners kelly bar 12. 17 top of gas injection device connects tap or top drives 16, if connection tap 16, for left-hand thread connection；If connection top is driven, it is positive Button connection.It is erosion resistance gooseneck 15 that the gooseneck above 16 is driven on tap or top, and there is buffering at 15 turning of erosion resistance gooseneck Region can effectively reduce erosion of the high-velocity fluid to gooseneck, and the erosion resistance gooseneck 15 belongs to field-replaceable unit.

When using tap 16, the coaxial four runners kelly bar 12 of 17 lower part of gas injection device connection is usually six rib kelly bars. Coaxial four runners kelly bar, 12 lower end connection side protects connector.If driving using top, coaxial four runners kelly bar 12 can not be used, It is directly connected to coaxial four runners drilling rod 22.Enter well drill assembly is from top to bottom：Coaxial four runners drilling rod 22, coaxial three runner bore Bar 23, coaxial three runners drill collar 24 and enclosed reacting cycle pneumatic hammer 25, main use is threadedly coupled or welds between each other, certain A little special occasions can also use flanged joint.Coaxial four runners drilling rod 22, coaxial three runners drilling rod 23, coaxial three runners drill collar 24 outer tube can be conventional criteria drilling rod, can also customize nonstandard drilling rod, be determined according to borehole diameter size, inner part It Jia Ru not three layers of inner tube and two layers of inner tube.Enclosed reacting cycle pneumatic hammer 25 includes enclosed reacting cycle pneumatic hammer hammer body and dedicated big straight Diameter reverse circulation drill bit composition.

Lift-gas injection unit 26 is by several air-compressor sets at gaslift compress cell 27 is made of several superchargers, is specifically set Standby quantity should determine according to engineering is practical.It is required that lift-gas injection unit 26 and gaslift compress cell 27 provide for gas lift reverse circulation High pressure gas.Lift-gas injection unit 26 is connect with gaslift pressure relief mechanism 28 by high pressure line, the pressure stage of the high pressure line It Tong Changbudiyu not 21MPa.

Gaslift pressure relief mechanism 28 is made of a series of valves, silencing equipment, pressure gauge etc., belongs to safety device, is used for It discharges system pressure and adjusts the tolerance for entering system.Underground gaslift gas flow control valve is arranged in 28 downstream of gaslift pressure relief mechanism 29 and gaslift gas flow meter 30, for adjusting and measuring practical tolerance consumed by gas lift reverse circulation.Gaslift ground injecting gas pipe 20 are converged for high pressure pipe joint, and pressure rank is usually less than 21MPa, by a series of high pressure hard tube line, high-pressure hose line, conversion Connector etc. is connected and composed by union.Soft pipeline can be used in part of the high-pressure gas injection pipeline on derrick, and hard tube line can also be used, Depending on this is by on-site actual situations.The 18 pressure rank of gaslift high-pressure gas injection hose being connected with gas injection device 17 is usually less than 21MPa, the two are connected by union.

Gaslift sediment outflow pipeline includes sediment outflow pipeline 14 and sediment outflow hard tube line 10, and pressure rank is not less than 7MPa.Pass through gas It lifts the drilling fluid containing landwaste for carrying and passes through sediment outflow pipeline 14 and sediment outflow hard tube line 10 respectively into mud circulating system 6 In.After drilling fluid is by a series of purified treatment, it is again fed among bore hole annulus 21 by mud Return Line 8, It is used for gas lift reverse circulation.

As shown in Fig. 2, well system is as follows in the integrated artistic process for implementing drilling well：

Enclosed reacting cycle pneumatic hammer 25 works required compressed gas by underground air hammer air injection unit 1 and underground air hammer increasing It presses unit 2 to generate, flows through underground air hammer pressure relief mechanism 3, underground air hammer gas flow control valve 4, underground air hammer gas injection Flowmeter 5, underground air hammer ground injecting gas manifold 7, underground air hammer high-pressure gas injection hose 13 reach gas injection device 17.In gas injection device Under the action of 17, compressed gas enters four runner drilling tools (coaxial four runners kelly bar 12, coaxial four runners drilling rod 22) and three In the underground air hammer gas injection runner 31 of runner drilling tool (coaxial three runners drilling rod 23, coaxial three runners drill collar 24), along the stream Road downlink simultaneously arrives at motor closed reacting cycle pneumatic hammer 25, and driving enclosed reacting cycle pneumatic hammer 25 does work, and the gas after acting passes through 25 inner flow passage of enclosed reacting cycle pneumatic hammer enters three runner drilling tools (coaxial three runners drill collar 24, coaxial three runners drilling rod 23) and in the underground air of four runner drilling tools (coaxial four runners drilling rod 22, coaxial four runners kelly bar 12) hammer grate flow channel 32, Along the runner uplink and reach gas injection device 17.Under the shunting function of gas injection device 17, enclosed reacting cycle pneumatic hammer 25 has been driven The exhaust gas of acting is discharged to except well system via the underground air hammer exhaust hose 19 being connected with gas injection device 17.

At the same time, compressed gas needed for gas lift reverse circulation is generated by lift-gas injection unit 26 and gaslift compress cell 27, Flow through gaslift pressure relief mechanism 28, lift-gas injection flow control valve 29, lift-gas injection flowmeter 30, gaslift ground injecting gas manifold 20, Gaslift high-pressure gas injection hose 18 reaches gas injection device 17.Under the action of gas injection device 17, it is (same that compressed gas enters four runner drilling tools Four runner kelly bar 12 of axis, coaxial four runners drilling rod 22) lift-gas injection runner 33 in, along the runner downlink and reach coaxial Four runner drilling rods 22 and coaxial three runners drilling rod, 23 junction.There is a mixed gas connector 34 at this, coaxial four runner can be connected to Lift-gas injection runner 33 and gaslift sediment outflow runner 35 in drilling rod 22 arrange the compressed gas in lift-gas injection runner 33 with gaslift Drilling fluid mixed in sand flow road 34.Mixed gas, liquid, solid three-phase flow averag density rapid drawdown, while in bore hole annulus and gas It lifts in sediment outflow runner 35 under differential pressure action, shaft bottom drilling fluid can carry on the landwaste being crushed by enclosed reacting cycle pneumatic hammer 25 It returns, successively by three runner drilling tools (coaxial three runners drill collar 24, coaxial three runners drilling rod 23) and four runner drilling tools (coaxial four stream Road drilling rod 22, coaxial four runners kelly bar 12) gaslift sediment outflow runner 35, then reach gas injection device 17.In the work of gas injection device 17 Under, the landwaste in gaslift sediment outflow channel 35 passes through tap 16, erosion resistance gooseneck 15, sediment outflow pipeline 14 and sediment outflow hard tube Line 10 is finally back to mud circulating system 6.It will be returned again by mud by the cleaned drilling fluid of mud circulating system 6 Flow tube line 8 is pumped into bore hole annulus.

Well system is by gas injection device 17, coaxial four runners drilling rod 22, coaxial three runners drilling rod 23, coaxial three runners drill collar 24 And the equal main components of enclosed reacting cycle pneumatic hammer 25 of major diameter are constituted.Wherein, gas injection device 17, coaxial four runners kelly bar 12, there are four channels for coaxial four runners drilling rod 22, are respectively used to pneumatic hammer gas injection, pneumatic hammer exhaust, lift-gas injection and gaslift row Sand；There are three runners for coaxial three runners drilling rod 23, coaxial three runners drill collar 24, are respectively used to pneumatic hammer gas injection, pneumatic hammer exhaust With gaslift sediment outflow.Aforementioned four runner and three runners, each runner is mutually indepedent, does not interfere with each other；Enclosed reacting cycle pneumatic hammer 25, Air inlet and exhaust are completed inside hammer body, and working performance is not by external interference.

Well system is the combination of gas lift reverse circulation sediment outflow and pneumatic hammer hard rock fast drilling.Gas lift reverse circulation row Sand can effectively solve the problems, such as that aforementioned big size hole drilling well engineering method can not effective sediment outflow；Enclosed reacting cycle pneumatic hammer, not only It can effectively improve hard-rock boring efficiency, and pneumatic hammer working performance not will receive the influence of the external environments such as formation water output； As long as the hoisting power and torque of drilling machine are sufficiently large, this system can meet the hard-rock boring of various borehole sizes, especially big ruler Very little wellbore deep-well hard-rock boring, for example, borehole size Φ 660mm or more or even Φ 1000mm or more；Well depth 800m or more.Phase For direct circulation gas drilling, this system is few using gas injection equipment, gas injection rate is small, and overall cost is low；This system institute gas consumption, compared with Conventional direct circulation pneumatic hammer drilling well saves 60% or more；This system not only can realize sediment outflow with gas lift reverse circulation, when necessary It can be switched to direct circulation mud drilling.

Well system requires annular space that drilling fluid is perfused, and drilling liquid will maintain within the scope of reasonable altitudes；Drilling fluid It can play a protective role to the borehole wall, be conducive to pit shaft and stablize.Using gas lift reverse circulation technique sediment outflow, large scale is not only solved The problem of wellbore deep-well sediment outflow difficulty, while shaft bottom landwaste all drains into ground from the gaslift sediment outflow runner at drilling tool center when creeping into Table avoids air-flow and causes erosion to the borehole wall during returning on cutting carring, is beneficial to prevent troublesome zone drilling process The generation that middle borehole wall perturbation collapses.The advantage for having gathered both gas lift reverse circulation sediment outflow and enclosed reacting cycle pneumatic hammer, is being protected Gas injection rate can also be greatly lowered while demonstrate,proving drilling efficiency, especially become apparent when major diameter well section is crept into；This has Conducive to reduction equipment investment, reduce demand, the saving fuel consumption of floor space, reduction to power and drilling fluid.Place It is strong to manage the positive and negative circulation air hammer of the more conventional major diameter of formation water output ability.In general, whether direct circulation pneumatic hammer or reacting cycle Pneumatic hammer, if formation water output will affect the working performance of pneumatic hammer, enclosed reacting cycle pneumatic hammer is not completely by formation water output Influence.For all fluid closed circulations, drilling fluid and shaft bottom landwaste drain into earth's surface also by the mode of gas lift reverse circulation, therefore nothing The rotating blowout preventer as used in direct circulation gas drilling need to be installed.

The specific embodiment of the utility model is only the explanation to the utility model, is not to the utility model Limitation, those skilled in the art can according to need after reading this specification makes without creative tribute the present embodiment The modification offered, but as long as all by the protection of Patent Law in the scope of the claims of the utility model.

Claims (7)

1. a kind of mixed gas connector of multi-cycle runner drilling tool, which is characterized in that including top end pipe (341), bottom end pipe (342), suspension joint (343) and connector outer tube (80), after top end pipe is fixed and is connected to by suspension joint with bottom end pipe It is mounted in connector outer tube, and forms outer tunnel (345) with connector outer tube wall, top end pipe is three-layer pipe wall construction, most It is offered on inner layer tube wall several gas mixed holes (344), bottom end pipe is two layers of structural pipe wall.

2. the mixed gas connector of multi-cycle runner drilling tool according to claim 1, which is characterized in that be provided in the middle part of suspension joint Circular hole channel (3431), circumferential coaxially to offer discontinuous circular passage (3432), suspension joint outer periphery is provided with outstanding It hangs boss (3433).

3. the mixed gas connector of multi-cycle runner drilling tool according to claim 2, which is characterized in that top end pipe is from outside to inside Three-layer pipe wall be (81), intermediate tube wall (82) and inner tubal wall A (83), form outer tunnel A (3411) between adjacent tube wall, intermediate lead to Road (3412), inner tubal wall inside is internal channel A (3413), and gas mixed hole is provided on inner tubal wall A (83).

4. the mixed gas connector of multi-cycle runner drilling tool according to claim 3, which is characterized in that top end pipe connects with suspension By welding or be threadedly coupled between head, outer tunnel A and internal channel A respectively with the circular passage of suspension joint and circular hole channel Connection, intermediate channel bottom block.

5. the mixed gas connector of multi-cycle runner drilling tool according to claim 1, which is characterized in that bottom end pipe is from outside to inside Successively include outer tube wall B (84) and inner tubal wall B (85), form outer tunnel B (3421) between two tube walls, is internal channel inside inner tubal wall B(3422)。

6. the mixed gas connector of multi-cycle runner drilling tool according to claim 5, which is characterized in that bottom end pipe connects with suspension By welding or be threadedly coupled between head, outer tunnel B and internal channel B respectively with the circular passage of suspension joint and circular hole channel Connection.

7. the mixed gas connector of multi-cycle runner drilling tool according to claim 1, which is characterized in that connector outer tube both ends have Screw thread, four directions or six square joints.