DK169483B1 - Device for cleaning a borehole - Google Patents
Device for cleaning a borehole Download PDFInfo
- Publication number
- DK169483B1 DK169483B1 DK347088A DK347088A DK169483B1 DK 169483 B1 DK169483 B1 DK 169483B1 DK 347088 A DK347088 A DK 347088A DK 347088 A DK347088 A DK 347088A DK 169483 B1 DK169483 B1 DK 169483B1
- Authority
- DK
- Denmark
- Prior art keywords
- motor
- borehole
- gland
- purification device
- output shaft
- Prior art date
Links
- 238000004140 cleaning Methods 0.000 title claims description 16
- 210000004907 gland Anatomy 0.000 claims description 22
- 238000000746 purification Methods 0.000 claims description 20
- 239000012530 fluid Substances 0.000 claims description 14
- 239000003381 stabilizer Substances 0.000 claims description 12
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000003380 propellant Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000747 cardiac effect Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000005755 formation reaction Methods 0.000 description 2
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000004417 patella Anatomy 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/18—Anchoring or feeding in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
- E21B44/005—Below-ground automatic control systems
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/28—Enlarging drilled holes, e.g. by counterboring
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Description
- i - DK 169483 B1- i - DK 169483 B1
Opfindelsen angår en indretning til oprensning af et borehul gennem underjordiske formationer bestående af en underjordisk motor med en rotor, som kan drejes i forhold til en stator, hvor rotoren basrer en dre-jetap, som bærer en knebel, i hvilken en række slibetænder er indlejret, 5 hvor drejetappen bringer kneblen til under brugen at beskrive en kredsende bevægelse inde i borehullet, hvor de slibende tænder bringes til at gennemtrænge den omsluttende borehulsvæg.BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a device for cleaning a borehole through underground formations consisting of an underground motor with a rotor which can be rotated relative to a stator wherein 5, the pivot pin causing the gland to describe during use a circular motion inside the borehole, where the abrasive teeth are caused to penetrate the enclosing borehole wall.
Indretninger til oprensning af et borehul anvendes til at forøge diameteren af et borehul, fx. forud for anbringelsen af foringen i bo-lo rehullet, eller til anbringelse af en gruspakning i produktionszonen i en olieproduktionsbrønd.Devices for cleaning a borehole are used to increase the diameter of a borehole, e.g. prior to placing the liner in the bohol hole, or for placing a gravel pack in the production zone in an oil production well.
US-patentskrift 3.472.553 angiver en oprensningsindretning til udvidelse af et borehul bestående af en underjordisk motor med en rotor, som kan drejes i forhold til en stator, hvor rotoren bærer en drejetap, 15 som bærer en knebel, i hvilken en række slibetænder er indlejret, hvor drejetappen bringer kneblen til under brugen at beskrive en kredsende bevægelse inde i borehullet, hvor de slibende tænder bringes til at gennemtrænge den omsluttende borehulsvæg. I den kendte oprensningsindretning er kneblen en kugle, som er forsynet med fremspring, og som er 20 forbundet med rotoren ved hjælp af en kæde. Under normal drift glider de fremspring, som vender bort fra rotoren, langs borehulsvæggen og udvider derved borehullet, medens de fremspring, som vender mod rotoren ikke deltager i oprensningen. Af denne grund er den kendte oprensningsindretning ineffektivt i brug og behøver vedligeholdelse med små tids-25 intervaller som følge af forøget slid på de fremspring, som vender bort fra rotoren.U.S. Pat. No. 3,472,553 discloses a cleaning device for expanding a borehole consisting of an underground motor with a rotor rotatable relative to a stator, wherein the rotor carries a pivot bearing a pinion in which a series of abrasive teeth are embedded, where the pivot pin brings the girdle to use during describing a circular motion inside the borehole, where the abrasive teeth are caused to penetrate the enclosing borehole wall. In the prior art cleaning device, the gland is a ball which is provided with projections and which is connected to the rotor by means of a chain. In normal operation, the projections facing away from the rotor slide along the borehole wall thereby expanding the borehole while the projections facing the rotor do not participate in the purification. For this reason, the known purification device is inefficient in use and needs maintenance at small time intervals due to increased wear of the projections facing away from the rotor.
Det er derfor en genstand for den foreliggende opfindelse at tilvejebringe en oprensningsindretning, som er mere effektiv i brug end kendte indretninger.It is therefore an object of the present invention to provide a purification device which is more efficient in use than known devices.
30 Det er en yderligere genstand for den foreliggende opfindelse at fremskaffe en oprensningsindretning, som kan anvendes til oprensning af et produktionsforingsrør uden at forårsage skade på foringsrøret selv.It is a further object of the present invention to provide a purifier which can be used to purify a production casing without causing damage to the casing itself.
Oprensningsindretningen ifølge opfindelsen er derfor kendetegnet ved, at drejetappen er et kardanled. Drejningen af rotoren overføres 35 til kneblen af kardanleddet, hvilken knebel derved ruller og glider - 2 - DK 169483 B1 langs borehullets væg. Således opnås det, at alle slibetænderne på kneblen bidrager til oprensningen, og ligeledes opnås det, at kneblen med lille udslagsvinkel kan trænge gennem et delvis tilstoppet produktionsforingsrør og rense dette op.The cleaning device according to the invention is therefore characterized in that the pivot pin is a universal joint. The rotation of the rotor is transmitted 35 to the gland of the cardiac joint, which gland thereby rolls and slides along the wall of the borehole. Thus, it is achieved that all the abrasive teeth on the gland contribute to the purification, and also it is obtained that the gland with small impact angle can penetrate a partially clogged production casing and clean it up.
5 US-patentskrift 1.485.615 angiver en borehulsoprensningsindretning med et drejeled anbragt for enden af en borestreng, der bærer en knebel, som er forsynet med slibetænder, hvor drejeleddet bringer kneblen til under brugen at beskrive en kredsende bevægelse inde i borehullet, hvorved de slibende tænder bringes til at gennemtrænge borehulsvæggen, ίο I denne oprensningsindretning er slibetænderne ikke indlejret i selve knebel!egernet, men i et skålformet legeme, som er monteret på kneblen.U.S. Pat. teeth are made to penetrate the borehole wall, or in this cleaning device, the abrasive teeth are not embedded in the squat itself, but in a bowl-shaped body mounted on the squat.
Det skålformede legeme kan rotere om kneblens akse og vil derfor under brugen blot rulle langs borehulsvæggen. Dette medfører ganske vist et mindre slid, men mindsker effektiviteten væsentligt.The bowl-shaped body can rotate about the axis of the kneecap and will therefore simply roll along the borehole wall during use. Although this results in less wear and tear, it significantly reduces efficiency.
15 US-patentskrift 4.299.296 angiver en underjordisk motor til drej ning af en almindelig borekrone. Denne kendte teknik kan ikke fungere som en oprensningsindretning til et borehul i en underjordisk formation.U.S. Patent 4,299,296 discloses an underground motor for turning a conventional drill bit. This prior art cannot function as a borehole cleaning device in an underground formation.
FR-patentskrifter 2.370.163 og 2.275.633 angiver indretninger til brug i et borehul, hvilke indretninger er udstyret med en udvidelig 20 stabilisator, som kan tilpasses forskellige borehulsdiametre. Den herfra kendte teknik er ikke af den indledningsvis angivne art, hvorfor den i denne sammenhæng er irrelevant.FR patents 2,370,163 and 2,275,633 disclose devices for use in a borehole, which are equipped with an expandable stabilizer which can be adapted to different borehole diameters. The prior art is not of the kind initially stated, which is why it is irrelevant in this context.
Opfindelsen forklares i det følgende mere detaljeret med henvisning til tegningen. På tegningen viser: 25 fig. 1 en vertikalprojektion af den nedre del af en oprensningsindretning ifølge opfindelsen, fig. 2 dels en vertikalprojektion, dels et lodret snit gennem den nederste del af en anden oprensningsindretning ifølge 30 opfindelsen, og fig. 3 en oprensningsindretning ifølge fig. 2 med udslåede stabilisatorblade.The invention is explained in more detail below with reference to the drawings. In the drawing: FIG. 1 is a vertical view of the lower part of a purifier according to the invention; FIG. 2 is a vertical elevation and a vertical section through the lower part of a second purification device according to the invention; and FIG. 3 shows a purification device according to FIG. 2 with knocked-out stabilizer blades.
På fig. 1 vises en oprensningsindretning bestående af en knebel 1, 35 som med et kardanled 2 bæres af en udgangsaksel 3 på en hydraulisk dre- - 3 - DK 169483 B1 vet motor. Motoren består af et hus 4, som er stabiliseret i et borehul 5 ved hjælp af stabilisatorblade 6. Motorhuset 4 er forbundet ved den øvre ende til en ledningsstreng (ikke vist), som bærer oprensningsindretningen, og gennem hviken en drivvæske pumpes ind i motorhuset 4, hvor-5 ved den i huset anbragte rotor bringes til at dreje udgangsakslen 3 og kneblen 1. Udgangsakslen 3, kardanleddet 2 og kneblen 1 udgør en aksial væskepassage (ikke vist), of drivvæsken udledes fra huset gennem væskepassagen og en række ledekanaler 7 ned i borehullet for at køle slibetænderne 8, som er monteret på kneblen og for at fjerne borespåner her-lo fra.In FIG. 1, there is shown a purification device consisting of a girdle 1, 35 which is supported by a universal joint 2 by an output shaft 3 on a hydraulic rotary motor. The motor consists of a housing 4 which is stabilized in a borehole 5 by means of stabilizer blades 6. The motor housing 4 is connected at the upper end to a conduit string (not shown) which carries the cleaning device and through which a drive fluid is pumped into the motor housing 4. whereby the rotor located in the housing 5 causes the output shaft 3 and the latch 1. The output shaft 3, the shaft 2 and the latch 1 constitute an axial fluid passage (not shown), or the propellant is discharged from the housing through the liquid passage and a series of guide channels 7 in the borehole to cool the abrasive teeth 8 mounted on the gusset and to remove drill bits therefrom.
Hvis udgangsakslen 3 på motoren efter nedsænkning af oprensningsindretningen i et pilothul 9 drejes, vil kneblen 1 kredse rundt i pilothullet. Denne kredsende bevægelse frembringer en centrifugalkraft, og som et resultat af denne trænger tænderne 8 ind i sidevæggen 10 i 15 pilothullet 9 i sideretningen. Tænderne 8 er fordelt over omkredsfladen på en keglestumpformet del 11 af kneblen 1. Den keglestumpformede del 11 er anbragt mellem en hårdmetal dækket næsedel 12 og en rørformet del 13 af kneblen, hvilken sidste del tjener til at sikre, at kneblen 1 under drift er rettet i en bestemt vinkel α i forhold til den centrale 20 akse I for borehullet 9, og for at undgå at borehullet bliver udvidet i en uønsket stor udstrækning. Oprensningen kan overvåges på overfladen ved måling af trykket i drivvæsken, som indsprøjtes gennem et standrør ind i rørstrengen, som bærer oprensningsindretning. Eftersom der ved en given omdrejningshastighed for kneblen 1 hersker et entydigt forhold 25 mellem standrørtrykket og effektforbruget for kneblen og hulstørrelsen, kan det målte standrørtryk anvendes til at styre hastigheden for op-træknng af oprensningsindretning gennem borehullet under drift af denne.If the output shaft 3 of the engine, after immersing the purifier in a pilot hole 9, is rotated, the gusset 1 will circle the pilot hole. This orbital motion produces a centrifugal force, and as a result, the teeth 8 enter the side wall 10 of the pilot hole 9 in the lateral direction. The teeth 8 are distributed over the circumferential surface of a cone-shaped portion 11 of the gland 1. The cone-shaped portion 11 is disposed between a carbide-covered nose portion 12 and a tubular portion 13 of the gland, the latter of which serves to ensure that the gland 1 is directed during operation. at a certain angle α with respect to the central axis 20 of the borehole 9, and to prevent the borehole from expanding to an undesirably large extent. The purification can be monitored on the surface by measuring the pressure in the propellant which is injected through a standpipe into the pipe string carrying the purifier. Since at a given rotational speed of the gusset 1, there is a clear relationship 25 between the standpipe pressure and the power consumption of the gusset and the hole size, the measured standpipe pressure can be used to control the speed of pull-up of the cleaning device through the borehole during operation thereof.
Hvis det ønskes, kan kardanleddet 2 omfatte en væskepassage, som begrænser størrelsen af væskestrømningen ind i kneblen 1 med en sti -30 gende hældningsvinkel α. I dette tilfælde kan standrørtrykvariationer, som frembringes som følge af den varierende strømningsbegrænsning i kardanleddet, anvendes til styring af trækhastigheden for indretningen gennem borehullet under oprensningerne. På den anden side kan kardanleddet 2 udstyres med en shuntventil (ikke vist), som har en væskepassage, 35 som styres af hældningsvinklen α for kneblen 1.If desired, the cardiac joint 2 may comprise a fluid passage which limits the magnitude of the fluid flow into the girdle 1 at an incline -30 inclination angle α. In this case, standpipe pressure variations produced as a result of the varying flow limitation in the cardiac joint can be used to control the tensile speed of the device through the borehole during the purifications. On the other hand, the universal joint 2 can be equipped with a shunt valve (not shown) which has a fluid passage 35 which is controlled by the angle of inclination α of the girdle 1.
- 4 - DK 169483 B1- 4 - DK 169483 B1
Det kan forstås, at rørledningen og motorhuset 4 under oprensningsforløb kan drejes eller holdes fast, og at hele arrangementet forhindres i at dreje, hvis indretningen sænkes ned i eller optages fra pi-lothullet 9, for at sikre at kneblen 1 holdes i pilothullets længderet-5 ning.It can be understood that during the purification process the pipeline and the motor housing 4 can be rotated or held, and that the entire arrangement is prevented from rotating if the device is lowered into or taken from the pilot hole 9 to ensure that the gland 1 is held in the longitudinal direction of the pilot hole. 5.
På figurerne 2 og 3 vises den nederste del af en oprensningsindretning, som er udstyret med hængslede stabilisatorblade 20, der kan slås ud for at centrere oprensningsindretningen i borehuller af forskellige størrelser. En indretning af denne type kan gennemføre flere passager ίο for at udvide hullet til den største diameter.Figures 2 and 3 show the lower part of a cleaning device equipped with hinged stabilizer blades 20 which can be folded out to center the cleaning device in boreholes of various sizes. A device of this type can carry several passages or to extend the hole to the largest diameter.
På fig. 2 vises indretningen i et pilothul 21 med lille diameter med stabilisatorblade 20 i indtrukket stilling, hvorimod indretningen på fig. 3 vises i et udvidet hul 22, hvor stabilisatorbladene 20 i en udslået stilling.In FIG. 2, the device is shown in a small diameter pilot hole 21 with stabilizer blades 20 in the retracted position, whereas the device in FIG. 3 is shown in an expanded hole 22 where the stabilizer blades 20 are in an off position.
15 Som det kan ses både på fig. 2 og 3 omfatter oprensningsindretnin gen et motorhus 23, som nær den nederste ende bærer stabilisatorbladene 20. Motoren omfatter en hul udgangsaksel 25, som bærer en knebel 26 ved hjælp af et kardanled 27. Motoren er en hydraulisk motor, som fx. en Moineaumotor, som drives af en drivvæske, som sprøjtes ind i motoren 20 gennem en rørstreng (ikke vist), som er forbundet til den øverste ende af motorhuset 23. Drivvæsken udledes (se pilene II) fra motorhuset 23 i et hult udgangsaksel 25 gennem åbninger 28 i den øverste ende af akslen 25. Drivvæsken strømmer altså gennem det indre af udgangsakslen 25, kardanleddet 27 og kneblen mod en række ledekanaler 29, som er fordelt 25 over omkredsfladen på en keglestumpformet del 30 af kneblen 26.15 As can be seen both in FIG. 2 and 3, the cleaning device comprises a motor housing 23 which carries near the lower end the stabilizer blades 20. The motor comprises a hollow output shaft 25 which carries a gusset 26 by means of a universal joint 27. The motor is a hydraulic motor which, for example. a Moineaum motor driven by a propellant which is injected into the motor 20 through a pipe string (not shown) connected to the upper end of the motor housing 23. The drive fluid is discharged (see arrows II) from the motor housing 23 into a hollow output shaft 25 through openings 28 at the upper end of shaft 25. Thus, the drive fluid flows through the interior of the output shaft 25, cardan joint 27 and girdle against a series of guide channels 29 distributed 25 over the circumferential surface of a cone-shaped portion 30 of girdle 26.
På den nederste ende af motorhuset er der monteret et ringformet stempel 31, som kan glide inde i et ringformet stempel hus 32. Stempel-huset 32 står i væskeforbindelse med det indre 34 af motorhuset 23 gennem en aksial væskepassage 33. På denne måde udøver trykket af drivvæ-30 sken inde i motorhuset 34 en nedadrettet kraft på stemplet 31, hvorved en glat buet næsedel 36 på stemplet bringes til at skubbe indad buede nedre dele 37 af stabilisatorbladene 20 udad i sideretningen, hvorved stabilisatorbladene 20 tvinges til en udslået stilling.On the lower end of the motor housing is mounted an annular piston 31 which can slide inside an annular piston housing 32. The piston housing 32 is in fluid communication with the interior 34 of the motor housing 23 through an axial fluid passage 33. In this way the pressure exerts pressure. of the drive fluid 30 inside the motor housing 34 a downward force on the piston 31, thereby causing a smooth curved nose portion 36 of the piston to push inwardly curved lower portions 37 of the stabilizer blades 20 outwards in the lateral direction, thereby forcing the stabilizer blades 20 to an off position.
Stemplet 31 kan tvinges tilbage til en tilbagetrukket stilling ved 35 hjælp af fjedre (ikke vist), hvis der ikke pumpes drivvæske gennem mo- - 5 - DK 169483 B1 toren for derved at muliggøre en aksial bevægelse af indretningen gennem borehullet under nedsænkning eller optagelse, medens stabilisator-bladene 20 holdes i den tilbagetrukne position.The piston 31 can be forced back into a retracted position by springs (not shown) if no propellant is pumped through the motor to enable axial movement of the device through the borehole during immersion or pick-up. while the stabilizer blades 20 are held in the retracted position.
Kneblen 26 i indretningen vist på fig. 2 og 3 er udstyret med en 5 hårdmetal dækket cylindrisk del 39 anbragt oven over den keglestumpformede del 30, i hvilken slibetænderne er indsat. Den cylindriske del 39 tjener til at begrænse huldiametertilvæksten pr. passage. Den endelige borehulsdiameter er begrænset ved anbringelsen af en glat hårdmetaldæk-ket næsedel 41 for enden af kneblen 26. ίο Oprensningsindretningen ifølge opfindelsen kan anvendes ved enhver normal oprensning af borehuller, fx. forud for anbringelse af en foring eller en gruspakning. Oprensningsindretningen ifølge opfindelsen er endvidere egnet til oprensning af i det mindste delvis tilstoppede produktionsforingsrør. Den glatte næsedel på kneblen forhindrer beskadigelse is på foringsrøret selv, og oprensningsindretning kan virke godt i produktionsforingsrørdele med variable grader af oprensning.The gusset 26 in the device shown in FIG. 2 and 3 are provided with a 5 carbide covered cylindrical portion 39 disposed above the cone-shaped portion 30 into which the abrasive teeth are inserted. The cylindrical portion 39 serves to limit the hole diameter growth per annum. passage. The final borehole diameter is limited by the application of a smooth carbide-covered nose portion 41 at the end of the gutter 26. The purification device of the invention can be used in any normal borehole cleaning, e.g. prior to applying a liner or gravel pack. The purification device according to the invention is furthermore suitable for the purification of at least partially clogged production casings. The smooth nose portion of the gland prevents damage to ice on the casing itself, and the purifier may work well in production casing parts with variable degrees of purification.
Under drift af oprensningsindretningen ifølge opfindelsen er der ingen risiko for, at den underjordiske motor, som driver kneblen, får motorstop, fordi skæringen af kneblen bliver mindre udtalt med forøget 20 omdrejningshastighed. Det vil kunne forstås, at den kredsende bevægelse af kneblen i borehullet frembringer en centrifugalkraft med det resultat, at tænderne trænger ind i borehul svæggen i sideretningen, og at tænderne i almindelighed vil have en tangential fart i forhold til borehul svæggen med det til følge, at tænderne skraber bjergarten ned fra 25 væggen. Eftersom den sidekraft, som udøves på tænderne, og deres tangential e fart i forhold til borehulsvæggen kan variere i længderetningen af kneblen, kan størrelsen, orienteringen og fordelingen af tænderne også variere i længderetningen af kneblen. Hvis det ønskes, at tænderne ikke har nogen tangential fart i forhold til borehulsvæggen under 30 driften af indretningen, da kan den keglestumpformede del formes således, at toppen af en matematisk kegle, som indhyller den keglestumpformede del, befinder sig i drejningscentret for kardanleddet. Alternativt kan tænderne også indlejres i en kugleformet del af kneblen. Hvis det ønskes, kan en del af den kugleformede overflade på dene del anbringes 35 tangentialt til en matematisk kegle, hvis top befinder sig i drej- - 6 - DK 169483 B1 ningscentret for kardanleddet. I dette tilfælde har i det mindste en del af tænderne ingen tangential bevægelse i forhold til borehulsvæggen under drift af indretningen.During operation of the cleaning device according to the invention, there is no risk that the underground motor which drives the gland will have a motor stop, because the cutting of the gland becomes less pronounced at an increased 20 rpm. It will be appreciated that the orbital motion of the borehole gland produces a centrifugal force, with the result that the teeth penetrate the lateral borehole and that the teeth will generally have a tangential velocity relative to the borehole bend resulting therefrom. that the teeth scrape the rock down from the 25 wall. Since the lateral force exerted on the teeth and their tangential velocity relative to the borehole wall may vary in the longitudinal direction of the gland, the size, orientation and distribution of the teeth may also vary in the longitudinal direction of the gland. If it is desired that the teeth have no tangential velocity with respect to the borehole wall during operation of the device, then the cone-shaped portion may be formed such that the top of a mathematical cone which encloses the cone-shaped portion is in the center of rotation of the cardiac joint. Alternatively, the teeth may also be embedded in a spherical portion of the gland. If desired, a portion of the spherical surface of that portion may be arranged tangentially to a mathematical cone whose top is in the center of rotation of the cardiac joint. In this case, at least a portion of the teeth have no tangential movement relative to the borehole wall during operation of the device.
Slibetænderne kan fremstilles af ethvert slidmodstandsdygtigt ma-5 teriale, som fx. diamant, wolframcarbid eller sintret diamant eller bornitri tparti kl er, som sikres på et wolframcarbidsubstrat. Tænderne kan endvidere være trekantede, skiveformede eller enhver anden passende form.The abrasive teeth can be made of any abrasion-resistant material, such as e.g. diamond, tungsten carbide, or sintered diamond or boron nitri tpart, which is secured on a tungsten carbide substrate. The teeth may also be triangular, disc shaped or any other suitable shape.
Det vil endvidere kunne forstås, at kardanleddet, som i de viste ίο eksempler forbinder udgangsakslen fra motoren og kneblen, hvis det ønskes kan erstattes af enhver anden art drejetappe, der fungerer som et kardanled, fx. en fleksibel ledningsdel.It will further be appreciated that the universal joint, which in the examples shown illustrates the output shaft of the motor and the gland, if desired can be replaced by any other type of pivot acting as a universal joint, e.g. a flexible wiring part.
1515
Claims (7)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB878714921A GB8714921D0 (en) | 1987-06-25 | 1987-06-25 | Borehole underreamer device |
| GB8714921 | 1987-06-25 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| DK347088D0 DK347088D0 (en) | 1988-06-23 |
| DK347088A DK347088A (en) | 1988-12-26 |
| DK169483B1 true DK169483B1 (en) | 1994-11-07 |
Family
ID=10619554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK347088A DK169483B1 (en) | 1987-06-25 | 1988-06-23 | Device for cleaning a borehole |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0298537B1 (en) |
| DE (1) | DE3876318T2 (en) |
| DK (1) | DK169483B1 (en) |
| GB (1) | GB8714921D0 (en) |
| NO (1) | NO302587B1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2677402A1 (en) * | 1991-06-06 | 1992-12-11 | Geostock | METHOD FOR DRILLING A BLIND WELL, IN PARTICULAR A LARGE DIAMETER AND DRILLING TOOL FOR IMPLEMENTING IT. |
| NO992514D0 (en) * | 1999-05-26 | 1999-05-26 | Faanes Per & Ge | Drilling device for drilling conical holes |
| US8899339B2 (en) | 2008-02-29 | 2014-12-02 | Exxonmobil Upstream Research Company | Systems and methods for regulating flow in a wellbore |
| GB2462306B (en) * | 2008-08-01 | 2012-12-26 | Deep Casing Tools Ltd | Reaming tool |
| WO2015142333A1 (en) * | 2014-03-20 | 2015-09-24 | Halliburton Energy Services, Inc. | Automated locking joint in a wellbore tool string |
| DE102017115939A1 (en) | 2017-07-14 | 2019-01-17 | Saurer Spinning Solutions Gmbh & Co. Kg | Method for operating an air-spinning device, yarn guide and air-jet spinning machine comprising such a yarn guide |
| CN116427853B (en) * | 2023-04-19 | 2024-01-09 | 河北省地质矿产勘查开发局第一地质大队(河北省清洁能源应用技术中心) | Drilling and reaming device and method suitable for gravel stratum |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1485615A (en) * | 1920-12-08 | 1924-03-04 | Arthur S Jones | Oil-well reamer |
| US1667155A (en) * | 1927-03-18 | 1928-04-24 | Zalmon B Higdon | Drilling bit |
| US2290502A (en) * | 1938-12-29 | 1942-07-21 | Dow Chemical Co | Apparatus for forming subterranean cavities |
| US2350973A (en) * | 1943-02-16 | 1944-06-06 | Shell Dev | Pressure-actuated tubing anchor |
| US2799475A (en) * | 1953-01-08 | 1957-07-16 | Texas Co | Reaming apparatus |
| US2823901A (en) * | 1955-11-07 | 1958-02-18 | Kammerer Jr Archer W | Expansible rotary drilling tools |
| US2922627A (en) * | 1956-06-07 | 1960-01-26 | Rotary Oil Tool Company | Rotary drill bits and cutters |
| FR1271163A (en) * | 1960-07-26 | 1961-09-08 | Device for expanding the base of a borehole | |
| DE1207907B (en) * | 1962-09-07 | 1965-12-30 | Servco Co | Downhole tool |
| US3196960A (en) * | 1963-03-19 | 1965-07-27 | Lamphere Jean K | Fluid pressure expansible drill bits |
| GB1099673A (en) * | 1963-10-15 | 1968-01-17 | Sir Frank Whittle | Improvements in fluid pressure motive systems, for borehole drilling |
| US3472553A (en) * | 1967-05-03 | 1969-10-14 | Bruno H Miller | Method of and apparatus for extracting bitumen |
| US3757877A (en) * | 1971-12-30 | 1973-09-11 | Grant Oil Tool Co | Large diameter hole opener for earth boring |
| FR2275633A1 (en) * | 1974-06-19 | 1976-01-16 | Ferodo Sa | Well boring head - ram-operated catspaws supplied from same source as hydraulic tool motor |
| SE414805B (en) * | 1976-11-05 | 1980-08-18 | Sven Halvor Johansson | DEVICE DESIGNED FOR RECOVERY RESP MOVEMENT OF A MOUNTAIN BORING DEVICE WHICH SHOULD DRIVE VERY LONG, PREFERRED VERTICAL SHAKES IN THE BACKGROUND |
| CA1067819A (en) * | 1977-10-14 | 1979-12-11 | Harold F. Green | Mining and extracting process and apparatus |
| US4299296A (en) * | 1979-07-06 | 1981-11-10 | Smith International, Inc. | In-hole motor drill with bit clutch |
-
1987
- 1987-06-25 GB GB878714921A patent/GB8714921D0/en active Pending
-
1988
- 1988-06-15 DE DE8888201228T patent/DE3876318T2/en not_active Expired - Fee Related
- 1988-06-15 EP EP88201228A patent/EP0298537B1/en not_active Expired - Lifetime
- 1988-06-23 NO NO882798A patent/NO302587B1/en not_active IP Right Cessation
- 1988-06-23 DK DK347088A patent/DK169483B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| EP0298537B1 (en) | 1992-12-02 |
| EP0298537A2 (en) | 1989-01-11 |
| DE3876318D1 (en) | 1993-01-14 |
| EP0298537A3 (en) | 1989-04-12 |
| DK347088A (en) | 1988-12-26 |
| NO302587B1 (en) | 1998-03-23 |
| DE3876318T2 (en) | 1993-04-01 |
| GB8714921D0 (en) | 1987-07-29 |
| NO882798D0 (en) | 1988-06-23 |
| DK347088D0 (en) | 1988-06-23 |
| NO882798L (en) | 1988-12-27 |
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| PBP | Patent lapsed |
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