CN105715221B - A kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig - Google Patents

A kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig Download PDF

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Publication number
CN105715221B
CN105715221B CN201610275780.XA CN201610275780A CN105715221B CN 105715221 B CN105715221 B CN 105715221B CN 201610275780 A CN201610275780 A CN 201610275780A CN 105715221 B CN105715221 B CN 105715221B
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China
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pipe
tube
bit
hole
sediment
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CN201610275780.XA
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CN105715221A (en
Inventor
万步炎
黄筱军
王佳亮
彭佑多
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Hunan University of Science and Technology
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Hunan University of Science and Technology
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B25/00Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors
    • E21B25/18Apparatus for obtaining or removing undisturbed cores, e.g. core barrels, core extractors the core receiver being specially adapted for operation under water

Abstract

The invention discloses a kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, including outer pipe assembly and inner tube assembly, described inner tube assembly includes dragging for spearhead mechanism;The lower end for dragging for spearhead mechanism is connected with bullet card detent mechanism, and bullet card detent mechanism is placed in by hanging ring on the seat ring of outer pipe assembly, and bullet card detent mechanism is connected by inner pipe joint with inner tube;Rock core bushing pipe is arranged in inner tube;The lower end of inner tube is provided with interior pipe bit, positions pressure ring and sea is dragged for and is arranged in interior pipe bit;Sealing ring is provided between outer pipe bit and interior pipe bit;Inner pipe joint, which is provided with, is used to connect annular gap and the water-flowing path of rock core bushing pipe inner chamber between inner and outer tubes, and for connecting the water-flowing path of annular gap between annular gap and inner tube and rock core bushing pipe between inner and outer tubes.The present invention is simple in construction, reliability is high;And flushing liquor directly washing away to sample can be avoided, bottom sediment wire line coring rate is improved, reduces the disturbance of sample.

Description

A kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig
Technical field
The present invention relates to a kind of deposit cord coring drill, is sunk more particularly, to a kind of seabed suitable for seabed rig Product thing wire line coring three-layer pipe drilling tool.
Background technology
The utilization of deep-sea resources have become a new focus of countries in the world Future strategy.As deep-sea is bored The development of spy technology, it proposes higher index request to core drilling quality.Sediment stratum is run into drilling process When, if being crept into using conventional cord coring drill, and using direct circulation wire line coring mode, due to being full of seawater in drilling tool And the malleation in drilling tool is larger, easily cause that rock core resistance during inner tube of core barrel is entered is excessive, and cause to core rate reduction, sample The disturbance of product and secondary destructiveness are larger, influence the integrality and quality of core sample.In addition, it is being mingled with a small amount of flagstone When the soft or hard intertonguing thing stratum of stone or layer of sand is crept into, conventional cord coring drill can not ensure to softer deposit simultaneously With the effect of coring of harder thin layer rock, bad adaptability.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention provide a kind of simple in construction, reliability it is high be applied to seabed rig Bottom sediment wire line coring three-layer pipe drilling tool, it can improve coring in the soft or hard intertonguing thing stratum in seabed drilling Rate.
The technical solution adopted by the present invention is:Including outer pipe assembly and inner tube assembly, described outer pipe assembly includes bullet card Stopper, bullet card room, outer tube, seat ring, reamer and outer pipe bit;Described inner tube assembly includes dragging for spearhead mechanism, plays locking position Mechanism, hanging ring, inner pipe joint, inner tube, rock core bushing pipe, positioning pressure ring, sea is dragged for and interior pipe bit;Drag for the lower end of spearhead mechanism with Bullet card detent mechanism connects, and bullet card detent mechanism is provided with hanging ring, is placed in by hanging ring on the seat ring in outer tube, plays locking The lower end of position mechanism and the upper end of inner pipe joint connect;The lower end of inner pipe joint and the upper end of inner tube are connected, and rock core bushing pipe is set In inner tube;Inner pipe joint, which is provided with, to be used to connect annular gap and the current of rock core bushing pipe inner chamber between inner and outer tubes and leads to Road, the water-flowing path are provided with backwater ball valve;Be additionally provided with inner pipe joint for connect between inner and outer tubes annular gap with The water-flowing path of annular gap between inner tube and rock core bushing pipe;The lower end of inner tube is connected with interior pipe bit, and positioning pressure ring is arranged on On the interior step of interior pipe bit, the lower section of the interior default position pressure ring of pipe bit is dragged for provided with sea;Set between outer pipe bit and interior pipe bit There is sealing ring.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, the bottom of said inner tube joint Blind hole is provided with face in the axial direction, blind hole is shoulder hole;Water proof set is provided with blind hole, backwater ball is provided with the aperture of blind hole Valve;The top of blind hole is along the circumferential direction evenly arranged with inclined hole;Inclined hole connects the gap between blind hole and inner pipe joint and outer tube; Endoporus that inclined hole is covered by water proof, backwater ball valve connect with the inner chamber of rock core bushing pipe;The inwall of inner pipe joint with every water-jacket outer wall Between form lacuna, be along the circumferential direction evenly arranged with respectively at the lacuna of inner pipe joint for connecting lacuna and outer tube and inner tube Between annular gap through hole and through hole for connecting annular gap between lacuna and inner tube and rock core bushing pipe.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, the inclined hole connects in inner tube Aperture on head inwall is higher than the aperture on inner pipe joint outer wall, and inclined hole is provided with ring at the aperture on inner pipe joint outer wall Connected in star, the section of groove are V-shaped.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, said inner tube drill bit it is interior Multiple water-flowing troughs are along the circumferential direction evenly arranged with wall.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, described bullet card localization machine Adjusting washer (disk) is provided between structure and inner pipe joint, adjusting washer (disk) internally the relative position of pipe bit and outer pipe bit can be carried out Regulation, described interior pipe bit are ahead of outer pipe bit, or concordant with outer pipe bit, or inside contract in outer pipe bit.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, described positioning pressure ring Multiple water-flowing troughs are along the circumferential direction evenly arranged with external cylindrical surface.
The above-mentioned bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, described sealing ring is U Type sealing ring or O-ring seal.
Compared with prior art, the beneficial effects of the invention are as follows:
1) present invention has double acting function, can both be cored using pure press mode, and can use rotary drilling mode again Core, it is evenly distributed in the circumferential direction on the inwall of its interior pipe bit and the external cylindrical surface of positioning pressure ring to have multiple water-flowing troughs, match somebody with somebody Closing to have in the present invention divides the inner pipe joint of water function to be used together, and when being crept into using rotary drilling mode, can make Flushing liquor flows through bottom hole along the annular gap between rock core bushing pipe and inner tube, effectively prevent flushing liquor to sample in rock core bushing pipe Directly wash away, reduce the disturbance of sample;
2)Inclined hole on inner pipe joint of the present invention is provided with annular groove at the aperture on inner pipe joint outer wall, groove is cut Face is V-shaped, using rotary drilling mode crept into when, flow through at a high speed annular groove flushing liquor can near groove shape Into a negative pressuren zone, make to produce swabbing effect in rock core bushing pipe, the water be advantageous in rock core bushing pipe is smoothly discharged along inclined hole, is improved Core rate.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of the positioning pressure ring of the present invention.
In figure:1- drags for spearhead mechanism;2- adapter couplings;3- bullet cards room;4- bullet mechanism for card;5- hanging rings;6- seat rings;7- is adjusted Save packing ring;8- outer tubes;9- inner pipe joints;10- water proof sets;11- backwater ball valves;12- inner tubes;13- rock core bushing pipes;14- reamers; 15- positions pressure ring;16- is dragged in sea;Pipe bit in 17-;18- sealing rings;The outer pipe bits of 19-.
Embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in figure 1, the present invention includes outer pipe assembly and inner tube assembly, inner tube assembly is placed in outer pipe assembly.It is described outer Pipe assembly includes bullet card shelves first 2, bullet card room 3, seat ring 6, outer tube 8, reamer 14 and outer pipe bit 19;Bullet card shelves are first 2, bullet card room 3rd, outer tube 8, reamer 14 and outer pipe bit 19 are sequentially connected;Seat ring 6 is arranged on the inwall of outer tube 8.
Described inner tube assembly connects including dragging for spearhead mechanism 1, bullet card detent mechanism 4, hanging ring 5, adjusting washer (disk) 7, inner tube First 9,16 and interior pipe bit 17 are dragged in inner tube 12, rock core bushing pipe 13, positioning pressure ring 15, sea;The lower end for dragging for spearhead mechanism 1 is locking with playing Position mechanism 4 connects, and the bottom of bullet card detent mechanism 4 is provided with hanging ring 5, and hanging ring 5 is placed on the seat ring 6 in outer tube 8, plays locking The lower end of position mechanism 4 is connected with the upper end of inner pipe joint 9, and adjusting washer (disk) is provided between bullet card detent mechanism 4 and inner pipe joint 9 7;By adjusting the number of the adjusting washer (disk) 7 between bullet card detent mechanism 4 and inner pipe joint 9, can internally pipe bit 17 with it is outer The relative position of pipe bit 19 is adjusted, and pipe bit 17 is inside contracted in outer pipe bit 19 in realization, or neat with outer pipe bit 19 It is flat, or it is ahead of outer pipe bit 19.The lower end of inner pipe joint 9 is connected with the upper end of inner tube 12;Rock core bushing pipe 13 is arranged on inner tube In 12;The lower end of inner tube 12 is connected with interior pipe bit 17, and positioning pressure ring 15 is arranged on the interior step of interior pipe bit 17, rock core lining The lower end of pipe 13 is arranged on the step surface of the positioning endoporus of pressure ring 15.The lower section of positioning pressure ring 15 is dragged for provided with sea in interior pipe bit 17 16.Sealing ring 18 is provided between outer pipe bit 19 and interior pipe bit 18, sealing ring 18 is using U-shaped sealing ring or O-shaped sealing Circle.
Blind hole 91 is provided with the bottom surface of described inner pipe joint 9 in the axial direction, blind hole 91 is shoulder hole.Pacify in blind hole 91 Equipped with water proof set 10, backwater ball valve 11 is provided with the aperture of blind hole 91.The top of blind hole 91 is along the circumferential direction evenly arranged with more Individual inclined hole 92, inclined hole 92 connect the gap between blind hole 91 and inner pipe joint 9 and outer tube 8.Inclined hole 92 passes through in water proof set 10 Hole, backwater ball valve 11 connect with the inner chamber of rock core bushing pipe 13, are formed for connecting annular gap between inner pipe joint 9 and outer tube 8 With the water-flowing path of the inner chamber of rock core bushing pipe 13, backwater ball valve 11 is check valve, only allows flushing liquor from the inner chamber of rock core bushing pipe 13 Flow to the annular gap between inner pipe joint 9 and outer tube 8.Including aperture of the described inclined hole 92 at inner pipe joint inwall is higher than Aperture at pipe joint outer wall, and inclined hole 92 is provided with annular groove at the aperture on inner pipe joint outer wall, the section of groove is in V Shape.When the present invention is crept into using rotary drilling mode, the flushing liquor for flowing through annular groove at a high speed can be near groove A negative pressuren zone is formed, makes to produce swabbing effect in rock core bushing pipe 13, is advantageous to the water in rock core bushing pipe 13 smoothly along inclined hole 92 Discharge, improve rate of coring.
Form lacuna in the middle part of the inwall of blind hole 91 between the outer wall of water proof set 10, at the lacuna of inner pipe joint 9 circumferentially Direction be evenly arranged with it is multiple be used for connect annular gap between lacuna and outer tube 8 and inner tube 12 through holes 93 and it is multiple be used for connect The through hole 94 of annular gap between cavity gap and inner tube 12 and rock core bushing pipe 13.Through hole 93, lacuna and through hole 94 are formed for connecting Lead to the water-flowing path of annular gap between annular gap and inner tube 12 and rock core bushing pipe 13 between inner pipe joint 9 and outer tube 8.
As shown in Figure 1, 2, multiple water-flowing troughs 171 are along the circumferential direction evenly arranged with the inwall of said inner tube drill bit 17, Water-flowing trough 171 is axially arranged along interior pipe bit 17.Along the circumferential direction uniform cloth on the external cylindrical surface of described positioning pressure ring 15 Multiple water-flowing troughs 151 are equipped with, axis direction of the water-flowing trough 151 along positioning pressure ring 15 is set.
Sealing ring 18 is provided between the outer pipe bit 19 and interior pipe bit 17 of the present invention so that ring between inner tube 8 and outer tube 6 Shape gap is effectively sealed, and coordinates the aspirator on rig, can be made to form piston type negative pressure in the present invention, be realized suction Wire line coring, prevent rock core from gliding, improve the wire line coring rate of bottom sediment.The inwall of the interior pipe bit 17 of the present invention and fixed Water-flowing trough is provided with the external cylindrical surface of position pressure ring 15, coordinates the inner pipe joint 9 of the present invention to use, flushing liquor can be made along rock Heart bushing pipe 13 and the annular gap of inner tube 12 flow through bottom hole, effectively prevent direct punching of the flushing liquor to sample in rock core bushing pipe 13 Brush, reduces the disturbance of sample so that reliability of the invention is high.The present invention has double acting function, and interior pipe bit 17 and inner tube are total Into can together being rotated with outer tube 8, it can both use pure press-in drilling mode to take deposit, can have been taken again using rotary drilling mode Hard rock rock core.
The specifically used method of the present invention is as follows:When running into sediment stratum, the inner tube assembly for transferring the present invention is carried out Creep into, during drilling, water pump stops supplying water into hole, and the present invention is under the drive of drill power head, with being pressed into deposit Layer.When present invention press-in sediment stratum carries out wire line coring operation, aspirator on rig is by feed pipe from drilling rod And drawn water in cord coring drill, by the performance parameter for rationally designing aspirator so that aspirator is from drilling rod and this hair The water that bright inner chamber is extracted with because deposit enters the present invention and the displacement to drilling rod inner chamber is of substantially equal, it is of the invention in shape Into piston type negative pressure, wire line coring rate of the invention is improved.When being mingled with a small amount of thin layer rock in sediment stratum, drilling tool Using rotary drilling mode, interior pipe bit and inner tube assembly together rotate fractured rock with outer tube;Water pump supplies water into hole, cooling Water flows through bottom hole along the annular gap between inner tube 12 and rock core bushing pipe 13, avoids cooling water and rock core is served as a contrast through inner pipe joint 9 The direct of sample is washed away in pipe 13, reduces the disturbance of sample.

Claims (7)

1. a kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig, including outer pipe assembly and inner tube it is total Into described outer pipe assembly includes adapter coupling, bullet card room, outer tube, seat ring, reamer and outer pipe bit;It is characterized in that:It is described Inner tube assembly include drag for spearhead mechanism, bullet card detent mechanism, hanging ring, inner pipe joint, inner tube, rock core bushing pipe, positioning pressure ring, Drag for and interior pipe bit in sea;The lower end for dragging for spearhead mechanism is connected with bullet card detent mechanism, and bullet card detent mechanism is provided with hanging ring, is led to Cross hanging ring to be placed on the seat ring in outer tube, the lower end of bullet card detent mechanism and the upper end of inner pipe joint connect;Inner pipe joint Lower end and the upper end of inner tube are connected, and rock core bushing pipe is arranged in inner tube;The inside of inner pipe joint, which is provided with, is used to connecting inner tube and outer Annular gap and the water-flowing path of rock core bushing pipe inner chamber, the water-flowing path are provided with backwater ball valve between pipe;Inside inner pipe joint It is additionally provided with the water-flowing path for connecting annular gap between annular gap and inner tube and rock core bushing pipe between inner and outer tubes;It is interior The lower end of pipe is connected with interior pipe bit, and positioning pressure ring is arranged on the interior step of interior pipe bit, and the lower section for positioning pressure ring is provided with sea Drag for;Sealing ring is provided between outer pipe bit and interior pipe bit.
2. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 1 suitable for seabed rig, its feature It is:Blind hole is provided with the bottom surface of said inner tube joint in the axial direction, blind hole is shoulder hole;Water proof set, blind hole are provided with blind hole Aperture at be provided with backwater ball valve;The top of blind hole is along the circumferential direction evenly arranged with inclined hole;Inclined hole connection blind hole connects with inner tube Gap between head and outer tube;Endoporus that inclined hole is covered by water proof, backwater ball valve connect with the inner chamber of rock core bushing pipe;Inner pipe joint Inwall and lacuna is formed between water-jacket outer wall, be along the circumferential direction evenly arranged with respectively at the lacuna of inner pipe joint for connecting Cavity gap is with the through hole of annular gap between outer tube and inner tube and for connecting between lacuna and inner tube and rock core bushing pipe between ring-type The through hole of gap.
3. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 2 suitable for seabed rig, its feature It is:Aperture of the inclined hole on inner pipe joint inwall is higher than the aperture on inner pipe joint outer wall, and inclined hole is in inner pipe joint Annular groove is provided with aperture on outer wall, the section of groove is V-shaped.
4. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 1 suitable for seabed rig, its feature It is:Multiple water-flowing troughs are along the circumferential direction evenly arranged with the inwall of said inner tube drill bit.
5. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 1 or 2 suitable for seabed rig, it is special Sign is:Be provided with adjusting washer (disk) between described bullet card detent mechanism and inner pipe joint, adjusting washer (disk) can internally pipe bit with The relative position of outer pipe bit is adjusted, and described interior pipe bit is ahead of outer pipe bit, or concordant with outer pipe bit or interior Contracting is in outer pipe bit.
6. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 1 suitable for seabed rig, its feature It is:Multiple water-flowing troughs are along the circumferential direction evenly arranged with the external cylindrical surface of described positioning pressure ring.
7. the bottom sediment wire line coring three-layer pipe drilling tool according to claim 1 suitable for seabed rig, its feature It is:Described sealing ring is U-shaped sealing ring or O-ring seal.
CN201610275780.XA 2016-04-29 2016-04-29 A kind of bottom sediment wire line coring three-layer pipe drilling tool suitable for seabed rig Active CN105715221B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106351597B (en) * 2016-11-17 2018-10-16 湖南科技大学 A kind of gas hydrates pressurize cord coring drill suitable for seabed drilling machine
US10927606B2 (en) 2018-08-13 2021-02-23 Hunan University Of Science And Technology Sediment core-drilling process for submarine wire-line coring drill rig
CN109025880B (en) * 2018-08-13 2019-11-26 湖南科技大学 A kind of deposit core-drilling technique suitable for seabed wire line coring drilling machine

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Publication number Priority date Publication date Assignee Title
EP1334260B1 (en) * 2000-11-03 2006-11-29 Fugro Engineers B.V. Downhole coring device
CN201254953Y (en) * 2008-09-03 2009-06-10 安徽省地质矿产勘查局313地质队 Loose strata original sample core drill tool
CN104653134A (en) * 2014-12-16 2015-05-27 吉林大学 Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit
CN204476329U (en) * 2015-02-02 2015-07-15 陕西铁道工程勘察有限公司 A kind of basement rock triple pipe core bit
CN204827310U (en) * 2015-08-13 2015-12-02 黄卫东 A triple pipe bits core drilling tool of keeping forging ahead for environmental science probing
CN205558847U (en) * 2016-04-29 2016-09-07 湖南科技大学 Deep -sea sediment wire line coring three -layer pipe bit utensil suitable for seabed rig

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1334260B1 (en) * 2000-11-03 2006-11-29 Fugro Engineers B.V. Downhole coring device
CN201254953Y (en) * 2008-09-03 2009-06-10 安徽省地质矿产勘查局313地质队 Loose strata original sample core drill tool
CN104653134A (en) * 2014-12-16 2015-05-27 吉林大学 Liquid-nitrogen natural-gas hydrate hole bottom freezing and rope coring drill bit
CN204476329U (en) * 2015-02-02 2015-07-15 陕西铁道工程勘察有限公司 A kind of basement rock triple pipe core bit
CN204827310U (en) * 2015-08-13 2015-12-02 黄卫东 A triple pipe bits core drilling tool of keeping forging ahead for environmental science probing
CN205558847U (en) * 2016-04-29 2016-09-07 湖南科技大学 Deep -sea sediment wire line coring three -layer pipe bit utensil suitable for seabed rig

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