US1709074A

US1709074A - Rotary drilling apparatus

Info

Publication number: US1709074A
Application number: US41660A
Authority: US
Inventors: Charles W Herrin
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-07-06
Filing date: 1925-07-06
Publication date: 1929-04-16
Anticipated expiration: 1946-04-16

Description

April 16, 1929- c. w. HERRIN ROTARY DRILLING APPARATUS Fild 'July e, 1925 5 Sheets-Sheet l n. om 6 we. iw WH W M 4W. .d a 2 @Nz a w 686 0 4. s 6 22523 a i @if m @fg A L@ b i m7 .f 5 n 4%@ wm Mmu e f .rgjw/ April 16, 1929.

` C. W. HERRIN ROTARY DR ILLI NG APPARATUS Filed July 6, 1925 5 Sheets-Sheet 2 Cha TZey 'lll/T Hernz'n ffm @Romania Q April 16, 1929. C, W- HERRN 1,o9,074

ROTARY DRILLING APPARATUS Filed July 6, 1925 a sneerswsheet 5 attenua/13 Patented Apr. 16, 1929. y i i' unirse STATES PATENT orifice.N

CHARLES W. HERRIN, 0F KANSAS CITY, MISSOURI.

ROTARY DR-ILLING APPARATUS.

Application filed July 6, 1925. Serial No. 41,660.

My invention relates to` rotary drilling Fig. 12 is a plan view ot said internal apparatus oi the type disclosed by my `co` nut. y ifiendinp; application tiled November 12, 1924-, Fig. 13 is a side elevation of a tubular dog;n Serial lilo. llfllll, now Patent No. 1,56%- carrying ineinber which coacts with the nuts i-lill, issued November 2s, 1925. The presdisclosed by Figs. 10 to 12, inclusive. Go ont invention diliers from the one disclosed Fig. lfl is a plan view ol the parts disin said copending application in the mechA closed by Fig. 13. Y anisin tor adjusting the bits to active and Fig. `15 isl a detail side elevation oi? a inactive positions and in cooperating eleplunger constituting a. portion of the elevavator inechanisrnv whereby the sleeve carrytor mechanism. 65 ing said bits may be raised or lowered upon Fig. 16 is a detail side elevation ol' a tu the drill stem. bular element which in practice is mounted in ln order that the invention may be fully the upper end of the sleeve and adapted to understood, reference will now be had to be engaged by the elevator mechanism when the accon'ipanying` diuwinpgs,l in which: the sleeve is to be raised or lowered upon 70 1 is a vertical section of the apparathe drill stein. tus showingT the sleeve being lowered to ac-` Fig. 17 is a detail vertical section of the tive position upon the drill stein. sleeve.

Fig. 2 is a side elevation7 partly in see- .Fig 18 is an enlarged cross section online tion, et the apparatus ready to release the 18--18 of Fig. 1. 75

sleeve Ytroni the drill stein so that said sleeve Fig. 19 is a cross section on line 19-19 may be elevated to the surface with the bits. of Fig. 7.

Fig. 3 is a view somewhat similar to Fig. Fig. 2O is a cross section on line 20.20 of 9. with the elevator mechanism in position Fi 8. 'for lifting the sleeve and the bits to the sur- Fig. 21 is a reduced irregular cross sec- 80 tace. tion on line 2.121 of Fig. 7 with the sleeve Fig. 4L shows the sleeve and the bits in removed. drilling position; the elevator mechanism F ig. 22 isa broken detail perspective of having been removed. y the lower portion of the drill stem and a Fig. 5 is an enlarged vertical section of chuck fixed thereon. i e5 the upper portion ol' the apparatus with the Referring now more particularly to the elevator mechanism being lowered preparasleeve and the parts intimately associated tory to lifting' the sleeve with the bits 'from therewith, 2 designates the rotary drill stein the well. which is made up of sections united by Fig. G shows the parts disclosed by Fig. couplings 4l, the .sections being added :from on 5 in the position which they assume after the time to time the well is bored out. sleeve has been lowered to operative position 6 designates the sleeve which is removand the elevator mechanism is ready to be `ably mounted on the stein 2 with which it is lilted trom the well. Y caused to rotate when in operative position Fig. 7 shows a broken vertical section oil` by diaineti'ieally opposed feathers 8, which 95 the lower portion oli the mechanism with the lit in corresponding loiigritudinal grooves bits about to Contact the inclined segmental 10 arranged internally within the sleeve 6 guides whereby said bits are directed into and provided at their lower ends with liaractive engagement with the chuck at the ing` mouths 12 whereby said grooves are lower' end el the drill stein. caused to register with the leathers 8 when 10o Fig. 8 is a view similar to Fig. 7, exceptthe sleeve 6 is being lowered to active posi im;1 that the bit-s have been lowered into action.

tive engagement with the chuck. y The sleeve 6 provided adjacent to its Fig. 9 is a cross section, slightly reduced, lower end with a pair o'l bits 141 which are on line Sl-el oit. Fig. 5. y provided at their upper ends with pivots 1G 105 Fig. 1() is a side elevation ot a nut torinmounted in the sleeve 6. The pivots 1G are inga part ol the elevator mechanism. threaded at their upper ends and provided Fifa. 11 is a side elevation ot an internal with nuts 18 which loosely rest upon the nut which is adJustable in the nut disclosed lower walls of the recesses 20 termed in the by Fig.. 10. sleeve (l to receive said nuts. The recesses lio lOV 'to permit the bitsr14 to describe approximately a quarter of a revolution when turning from inactive position disclosed by Fig. 7, tothe activel position disclosed by Fig. 8.

Vand viceversa. VThe bits 14 are prevented from turningfar enough on their pivots 16 to get out of proper relation with the asso ei'ate mechanism by stops 28 which project upwardlyfrom said `bits 14 into grooves 30 communieatingwith the lower end of the bore of the sleeve 6.

A 32 designates a 'chuck Xe'd to the lower endv of the drill stem 2 for the purpose of locking thebits 14'inactive position, slicwn 'parts 35 by the slots 34. Each by -Figs. 2, 3, 4 and 8. Said chuck32 is provvided with diametric'ally opposed slots 34 into which the bits 14 are directed as they are lowered frointhe position disclosed by Fig. 7 to that disclosedby Fig. 8, by a pair of segmental inclined guides 36 formed at the upper portion of'said chuck V32. The upper portion of the chuck 32 is reduced in diameterto freely enter the lower end of the sleeve ,6 and is divided into two segmental segmental part tapers downwardly at' one end as indicated at 37 to clear the lower ends of the bits'14 as they move downwardly upon the inclined guides 36 formed intheV opposite ends of said segmental parts 35. On entering the slots 34 in 'which they snugly fit. the bits 14 Vare held from spreading apartby integral ribs 38 which fit within corresponding grooves 40 formed in the chuck andV communicating with slots 34,

F

19 and 20. In order that the bits 14 may turn with atheir pivots 16 from the position shown by Figs. 7,19 and 21 tot-he position best disclosed by Figs. 8 and 20, the lower portion l 7 to thatdisclosed by Fig. 8,.diametrica of the drill stem 2 is provided with oppositely disposed

longitudinal recesses

42 and 44, Figs. 1, 7, 8, 19, 20 and 22.

The

upper endsorA 4therrecesscs

42 and 44 arerbeveled as indicated at 46 and 48, respectively, so that: when Jthe sleeve 6 is yraised to release the Vbits 14 from the chuck 32the inner upper corners of said bits 14 "will contact said' beveled ends 46 and 48 and be adjusted thereby to inactive position, Fig. 7, so that they may pass upwardly at opposite sides of the drill stem. lVhen the sleeve 6 is loweredfrom the position vshown by F I opposed tongues 50 atits lowerend enter A.'corresponding recesses 52 in the chuck 32 to form a coupling which coacts with the feathers 8 in driving the sleeve (3 and the bits 14 when the drill stern 2 is rotated.

Duets 33 extend from the tubular portion 35 of the drill stem 2 to the lower portion of the chuck 32 for the purpose of discluirgingy water forced dmvnwardly through said drill stem to flush out the cuttings from the wcll. The upper portion of the sleeve, 6 is provided with a plurality of pivotally mounted internal dogs 54 adapted to engage a peripheral shoulder 56 formed on the drill stem 2 by cutting therein a tapered annular recess 58.

The upper end of the sleeve 6 has a rcmovable cap 60 with an axial bore in which a tubular element 62 has a slidable fit. The lower end of the tubular clement (l2 is provided with an annular clamp 64 adapted to engage over the upper ends of the dogs 54, Fig. 2, to hold them in engagement with the shoulder 56 and thereby prevent the sleeve 6 from moving upwardly on the drill stcm 2 when the apparatus is in thc drilling position disclosed by Fig. 4.

The upper portion of the tubular clement 62 is vprovided with spaced collars 66 und 68 for engagement. by dogs 7U forming )art of the elevator mechanism 7 The dogs 7() are pivotally mounted on a ring 72 slidably mounted within a tubular jacket 74. Independent downward movement of the 1ing 72 is limited by a pin 76, which projects inwardly from the jacket 74 into a peripheral groove 78 in said ring.

The upper portion 80 of the ring 72 is reduced to slidably fit within the lower portion of a nut S2, the sliding movement be- Ving restricted by a pin e4 projecting from the ring 72 into a slot 86 within said nut 82. The nut- 82 has a sliding fit in the jacket 74 and is provided at its lower margin with recesses 88 to receive thc upper ends of the dogs 7() when in the position disclosed by Fiijgs. 1 and 5. The nut 82 has threaded therein an internal nut 90, which when adjusted upwardly permits the upper ends of the dogs to pass inside of said nut 82 and l e locked thereby in inactive position as disclosed by Fig. 6.

The nut 82 is sli( ably mounted upon the intermediate portion of av plunger 92, but caused to rotate therewith through the interinediaey of groove and feather connections 94. The plunger 92 has a slidable fit upon the drill stein 2 and within the ring 72, and is provided at a point above the nut 82 with a. collar 96 which limits the slidable movement of the plunger 92 by contacting the top of the nut 82 or the bottom of a cap 98 threaded into the upper end of the jacket 7 4 and having an axial bore through which the plunger 92 slidably extends. The upper end of the plunger 92 is provided with suitable means such as eyes 100 to which the lower' ends of a cable 103 are attached for the purpose ot raising and lowering the elevator mechanism 73, together with the sleeve 6 whenever the same is coupled to said elevator mechanism. The cable 103 may run over a sheave (not shown) at the surface.

In practice when starting to drill a well the drill stem 2 is equipped withthe sleeve 6 and the bits 14, the elevator' mechanism being omitted. As the work progresses andthe bits 14 become dull and require sharpening, they, with the sleeve 6, `are lifted to the surface by the elevator mechanism 73 which lowered. on the drill stem 2 for that purpose. Before lowering the elevator mechanism the nut 82 is adjusted upwardly so that the upper ends ofthe recesses 88 will just clear the `upper ends of the dogs 70, Figs. 1 and 5, `leaving the same to move t'reely on their pivots 71. The internal nut 90 is then adjusted to its lowermost position against the top` of the ring 72 by rotating the plunger 92, to prevent the nut 82 from dropping behind the upper ends of the dogs and locking them in inactive position as shown by Fig. 6. After the foregoing adjustments have been made the elevatorV mechanism 7 3 is lowered by the cable 103 until the jacket 7'4 rests upon the cap 60, which is a signal to the workmen that the elevator mechanism ready to be lifted to the surlfacc. As` the elevator mechanism 73 is lifted with the dogs 70 resting on the `beveled llange at the lower end of the jacket 74, said flange forces the lower ends of said dogs 70 into engagement with the under side o'l the collar 66, Fig. 2, of the tubular element 62, which, on being lifted by the `dogs 70, lifts the sleeve 6 through the intermediacy of the Y clamp 64 which is lifted into engagement with the underside ol' the cap 60, Fig. 3. rlhe upward movement of the clamp 64 trees the dogs 54s() that they can slide out ot engagement with the beveled shoulder 56 to the position shown by Fig. 1, as the sleeve 6 moves upwardly with the elevator mech# anism 73. As the sleeve 6 moves upwardly he bits 14 are turned approximately a quarter of a revolution from the position shown by Figs. 8 and 20, to the position disclosed by Figs. 7 and 19, by the upperends of said bits contacting the beveled ends 46 and 48` of the

recesses

42 and 44, respectively.

lrlhen turnedas stated, the bits 14 are free to move upwardly without impinging against the drill stem2 On reaching the surface the bits 14 are removed from the sleeve V6 `and resharpened `or replaced by others.

Preparatory to again lowering the sleeve 6 and the bits 14 into the well, the tubular element 62 is pulled upwardly out of saidv sleeve until the bottom of the collar 68 passes above the hook ends 77 of the dogs 70, which are forced upwardly and backwardly out of `and 68 contacting the beveled portions 70:L

at the lower ends of said dogs 70. After the collar 68 passes above the hook ends 77 of the dogs 70 the latter move downwardly by the force of gravity and the beveled 'flange 75 forces said hook ends 77 against the tubular element 62 at a point beneath the collar 68, as shown by Fig. 1, the acket 74 being supported by its cap 98 resting upon the collar 96 of the plunger 92 as shown by Figs. 1 and 5. The internal nut 90 is then screwed upwardly above the upper ends of the dogs 70 and the ring 72 until it contacts with the internal flange 83 at the upper end olf `the nut 82, by rotating the jacket 74 while the plunger 92 is held stationary. The cable 103 is then lowered with the elevator mechanism 73, the sleeve 6 and the bits 14, while the drill stem 2 is suspended with its chuck 32 high enough from the bottom of the well to permit the,` bits 14 to clear said bottom ,while being turned by the guides 36 from the inactive position disclosed by Fig. 7, to the active position disclosed by Fig. 8. The sleeve 6 isV guided by the feathers 8 and grooves 10 into position upon the chuck 32 and in turn directs the bits 14 into proper relation with the guides 36. The drill stem 2 with the sleeve 6 andthe elevator mechanism 73, are then sinuilltaneously lowered until the bits 14 rest upon and are supported bythe bottom oli` the well. The tubular element 62 and the elevator mechanism 7 3 continue their downward movement, permitting the beveled lower ends of thedogs 70 to engage the beveled upper reduced terminal 6l of the cap 60 which throws said dogs 70 out of engagement with the collar 68,

Ashown by Fig. 6. J ust `as the dogs 70 are larclamp 64 engages over the dogs 54 and holds them in locked engagement with the shoulder 56. As the plunger 92 forces the tubular element 62downwardly the `diametrically reduced portion 97 of the collar 96 impinges against the upper end of the inter-nal nut 90,` forcing the same downwardly so that rit in turn will carry the nut 82 downwardly behind the upper ends ofthe dogs 7 0 and thus lock said dogs in the inactive position disclosed by Fig. 6. The elevator mechanism 73 is now ready to be lifted to the surface without the sleeve 6 as the dogs 7() areheldin position by the nutj82 to clear the collars 66and 68. c

From the foregoing description, taken inl connection with the drawings, it isapparent that I have provided an apparatus embody# ing the advantages above pointed out, and

while I haveV shown the preferred construction, combination and arrangement of parts, Ireserve the right to all such modifications thereof `as' properly fall Within. the spirit Vand scope of the invention as claimed.

' position, and means on the drill stem for Y i sition.

securing the bits in active position.

2. In an apparatus of the character described, a drill stem, a sleeve capable of being raised and lowered on: said drill stem whilerthe same 1s 1n lowered position 1n a well, la drillingvtool carrledby sald sleeve,

pivotedmeansfor securing said sleeve from moving upwardly on they drill stem, Vand clampmeans slidably mounted in the sleeve for holding said pivoted means-in active po- 3. In anlapparatus of the character de-V scribed, a drill stem, fa sleeve removably mounted'on said drill stem, a drilling tool carried by said sleeve, dogs for securing said sleeve against upward movement on the drill stem, clamp means operablymounted 1n the l upper portion of the sleeve for holding said dogs in active position, and means controlled froml the top ofthe Well for disengaging said .clamp means from the dogs.,

it;Y In an apparatusof the character described, adrill stem provided with a shoul- V der,1a;, sleeve mounted for vertical movement on said drill stem, a drilling `tool carried byv said sleeve, dogs carried by the sleeve to vreleasably engage thev shoulder-on the drill stem lsoxthat saidsleeve can be lifted independently of said drill stem', and means for4 locking'the dogs in engagement with said u shoulder and thereby securing the sleeve upon the drill stem.

p5, In .an apparatusof the character described, adrill stem provided with a'shoulder, a sleeve mountedfor vertical movement y on said drill stem, ya drilling tool carried by saidsleeveVdogsrcarried by the sleeve to releasably' engage the shoulder on the drill vstem so that said sleeve can be liftedindependentlyof said drill stem, and an annular clamp for positively locking the dogs in Y engagement with said shoulderand thereby securing the sleeve to the drillstem.

V6,:In an apparatus of the character` described, a drill stem provided withfa shoul- 1 der, asleeveimounted for vertical movement onV said drill stem, `a drilling tool carried by said sleeve, gdofgs v carried by the, sleeve,V to

releasably engage the shoulder on the drill stem so that said sleeve can be lifted independently of said drill stem, means for positively locking the dogs in engagement with said shoulder and thereby securin the sleeve to the drill stem, and elevator mec mnism for releasing said lock means from the dogs.

7. In an apparatus of the character dcscribed, a drill stem, a sleeve removably mounted on said drill stem, a drilling tool carried by said sleeve, a dog for securing said drill stem and sleeve together, an element associated with said sleeve to hold said dog in active position, and elevator mechanism for disengaging said clement from the dog and raising and lowering the sleeve independently of the drill stem.

8. In an ajjiparatus of the character described, a drill stem, a member arranged for independent vertical movement upon, said drill stem, a drilling tool carried by said member, means for locking said member upon the drill stem, a dog for unlocking said locking means and raising and lowering said member, means for adjusting said dog to active position so that it may raise or lower said nicmber, means for adjusting the dog to release position so that it ma be lifted without said member, and means or holding said dog in released position.

9. In an apparatus of the character described, a drill stem, a member arranged to slip on and off. of said drill stem, a drilling tool carried by said member, a dog for raising and loweringtsaid member, a flange for adjusting said dog to active position, and means on the member carrying the drillingr tool for vadjusting the dog to release position.

10, In an apparatus of the character described, a drill stem, a member arranged for vertical movement upon said drill stem, a. drilling tool carried by said member, means Vfor locking said member upon said drill stem, a dog for releasing said locking means and raising and lowering said member, a ring extending around the drill stem and carrying said dog, a jacket for adjusting said dog to active position and in which said ring is mounted` and means for raising and lowering said jacket.

11. In an apparatus of the character described, a drill stem, a member arranged for vertical movement upon said drill stem, a bit carried by said member, means for locking said member upon the drill stem, a dog for releasing said locking means and raising and lowering said member, a jacket for adjusting said dog to active position, and means carried by said jacket for holding said dogr in released position to permit the jacket to be lifted independently of said member.

, 12. In an apparatus of the character described, a drill stem, a member arranged to slip on and off of said drill stem, bits carried by said member, a dog for raising and lowering said member, a jacket lor adjusting said dog to active position, a cable for raising and lowering said jacket, means carried by said jacket 'for holding said dog in released position to permit the jacket to be lifted independently of said member, and a plunger sli dably mounted on the drill stem tor causing the last-mentioned means to ac-I tively engage said dog.

13. In an apparatus of the character described, a sleeve, bits turnably mounted at the lower portion of said sleeve, a drill stem on which said sleeve is slidably mounted, said drill stem having oppositely disposed recesses with beveled upper ends whereby the bits are turned to clear the drill stem when the sleeve is raised, and means at the lower portion of the drill stem lor turning and locking the bits in drilling position when the sleeve is lowered.

14. In an apparatus of the character described, a drill stem, a sleeve slidably mounted upon said drill stem, a pair oi' l'lat rectangular bits turnably mounted at the lower portion of said sleeve and provided with longitudinal ribs, and interlocking means on the lower portion of the drill stem for locking the bits in drilling position and provided with grooves for receiving said ribs.

15. ln an `apparatus ot' the character described, a drill stem, a sleeve slidably mounted on said drill stem, a drilling tool carried by said sleeve, a dog lor preventing said sleeve from sliding upon said drill stern, a tubular element slidably mounted in and projecting from the upper end or the sleeve and adapted to hold said dog in active position, and means for disengaging said tubular element from the dog and lifting said clement and the sleeve on the drill stem.

16. ln an apparatus of the character described, a drill stem, a sleeve slidably mounted on said drill stem, a drilling tool carried by said sleeve, a cap at the upper" end et said sleeve, a dog for securing the sleeve to the drill stem, a tubular slidable element projecting through said cap and provided with clamp means for holding said dog in active position, and mechanism including a dog `for engaging said tubular element and through the intermediacy thereof raise and lower the sleeve, the dog on said mechanism being disengaged by said cap from the tubular element after the sleeve has been lowered.

17. In an apparatus ot the character described, a drill stem, a sleeve slidably mounted onsaid drill stem, a drilling tool carried by said sleeve, a dog for engaging the drill stem and preventing said sleeve lrom sliding upwardly on said drill stem, a tubular clement slidablymounted in and projecting from the upper-end of the sleeve and adapted to hold said dog in active position, elevator 'mechanism consisting or' means :tor engaging said tubular element and through the intermediacy tliereoit' raising and lowering the sleeve, and a jacket having a liange for forcing said means into engagement with the tubular element.

i8. ln an apparatus of the character described, a drill stem, a member arranged for independent vertical movement Vupon said drill stem, a drilling tool carried by said member, means for securing said member upon the drill stem, dogs for unlocking said securing means and raising and lowering said member independently of the drill stem, means for adjusting said dogs to aetive position preparatory to lifting said member, and means on the member lor adjusting said dogs to release position so that the same can be lifted independently of said member.

19. ln an apparatus of the character described, a drill stem provided with a shoulder, a sleeve mounted for vertical movement on said drill stem, a drilling tool carried by said sleeve, dogs carried by theV sleeve to releasably engage the shoulder on the drill stein so that said sleeve can be lifted independently ol said drill stein, a tubular element vertically slidable in the upper portion oit the sleeve and adapted to lock said. dogs in engagement with the shoulder on the drill stem, two superimposed collars spaced apart upon said tubular element, elevator` mechanism adapted to engage the lower collar and lower the drilling mechanism into a well and engage the upper collar and raise the drilling mechanism from the well, and means on the upper end of the sleeve for disengaging the elevator mechanism from said lower collar after the drilling mochanism has reached the bottoni oit the well.

ln testimony whereof I allix my signature.

CHARLES W1 HEREIN.