US1362513A - Underreamer - Google Patents

Underreamer Download PDF

Info

Publication number
US1362513A
US1362513A US374935A US37493520A US1362513A US 1362513 A US1362513 A US 1362513A US 374935 A US374935 A US 374935A US 37493520 A US37493520 A US 37493520A US 1362513 A US1362513 A US 1362513A
Authority
US
United States
Prior art keywords
cutters
underreamer
shanks
extension
mouth
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US374935A
Inventor
Charles P Skinner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US374935A priority Critical patent/US1362513A/en
Application granted granted Critical
Publication of US1362513A publication Critical patent/US1362513A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • E21B10/00Drill bits
    • E21B10/64Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe
    • E21B10/66Drill bits characterised by the whole or part thereof being insertable into or removable from the borehole without withdrawing the drilling pipe the cutting element movable through the drilling pipe and laterally shiftable

Definitions

  • This invention relates to underreamers, namely devices' for enlarging vwell holes so that the casing ma .be lowered in same as 'the development o the well hole proceeds.
  • a ⁇ recip rocating bit In the standardform of drilling a ⁇ recip rocating bit is operated in the formation of the well hole and this is lowered through the casing and only cuts or drills or bores a hole having a diameter substantially that of t'he inside of the well casing. ,It'therefore is necessary to ream or cut out the an nul'ar formation beneath' the casing, or the casing and'its shoe, in order to permit the casing to be further lowered.
  • the present invention has for its object the provision of an improved underreamer which will be superior in point of relative simplicity and inexpensiveness of construction, taken in conjunction with positiveness in operation, ⁇ reliability and durability, facility in adjustment, safety in use, and which will be devoid of liability of the cutters and the attendant features being lost in the hole in case" 'of breakage therein or in the parts suspending or controlling same.
  • the invention consists in the novel an'd useful provision," formation, construction, 40 ⁇
  • Figure 1 is ⁇ a lvertical cential sectional View, partly in elevation and partly broken away, of 4an underreanier embodying the invention and shown in conjunction with a portion of well casing and the shoe thereof, the parts of the underreamer being shown in collapsed condition for passage through the cas'ing and its shoe;
  • Fig. 2 is a view similar to Fig. 1 showing the underreamer in expanded or operative condition;
  • Fig. 3 is a vertical sectional view, partly UNDERREAMER.
  • Fig. 4 is la transverse detail sectional view, taken upon the line m4-m1Fig. 2, and
  • vA designates a portion of a length of well easing, with itsishoe B, within whicliis disposed the mandrel or tubular-body Cof an underreamer having at the lower end Athereof an open bowl mouth o with a prefably cylindrical internal bore, leadingV up to an annular shoulder 6 above which is pro'- vided a chamber 7 of lesser diameter than the bowl mouth o,- and within which is threaded, at the lower end, as at 8, a detachable hollow slotted extension 9 which may be prevented from turning by a lateral screw pin 9.n and through which .plays lengthwise a spring-actuated rod 10,' the coiled compression spring 11 of.
  • a transverse key '14 is inserted through commodates the reciprocating rod 10.
  • This slot 17 extends from a shoulder 17 some what above the lower end of the hollow .slotted extension 9 upwardly toV a point somewhatI below the shoulder GQ- Tlie lower end of the extension, 17h ⁇ beneath theshoulder 17, is laterally extended or extended transversely of the mandrel C and its bowl e, and its ends are :notched to lit under the lower end of the ilo-wl .mouth c, as at 17C.
  • the partition 17 h acts as an expanding me1nber for the cutters D, and is provided at its lower portion with a wedge-shaped spreader 19, preferably integral with such partition 17h, providing opposed downwardly expanding surfaces 19a for the cutters, which at their upper endsmergeinto substantially parallel opposed inthrust surfaces 19h.
  • the shanks 16 of the cutters are prefer ⁇ partition 17D.
  • the cutters are expanded by.
  • the inner' faces 20 and21 are formed at the lower portions of the shanks 16 where they merge into the stock of -the ⁇ cutter bodies 23. These riding shoulders 22 merge into upthrust shoulders 24 which engage the lower periphery of the bowl mouth c when the cutters 'are expanded, 'imparting upthrust in reaming to the mandrel C.
  • the inthrust in reaming is transmitted by the faces 20 to the parallel faces 19", and any outthrust, as above pointed out, is taken care of by the inner faces 16b of the enlarged cutter shank portions 16a.
  • the cutter bodies 23 are providedfat their lower ends and at their outer edges with cutting edges 25, and-the cutters may be dressed out and repaired as required when the same become worn, or ready replacements may be made, the same being capable of assembling,
  • The'cutters due to the particular arrange' ment and accommodation of features of the re'amer, may be made very wide, with plenty of stock to dress-out, the inthrust is well taken care of and rotatory action prevented by the wedging partition 17h, and the cut- 'ters may execute a wide out in each stroke,
  • the key 14C takes into eyes laJL in the cutter shanks 16, which eyes are slightly .enlarged to permit the cutters to tilt or teeter upon such key.
  • shanks being formed 4with shoulder por- ⁇ sion head, cutters provided with shanks.
  • An underreamer including a body formed with a spring receiving chamber and having a month at the lower end thereof. a hollow slotted extension fitted in the lowes' end. of the spring receiving chainber and projecting Vinto the mouth, a substantially annular chamber being provided surrounding the extension and the extension having an expanding head, cutters provided with Shanks proj ectng into theannular chamber and constructed for coperation with the expanding head, the upper ends of the Shanks being curved to fit around the extension and being provided with shoul- V ders adapted to engage the expanding head to prevent loss of the cutters, a spring actulated rod sldable within the hollow exten- ⁇ name to this specification in the presence of ⁇ Witnesses.

Description

- l v. P. SK|NNER.
UNDERREAMER.
Y Y APPLICATION FILEUAPRA I9, 1920.
Patentdne. 14,1920.
, UNITEDv sTA'Es PATENT ori-ucla.
CHARLES P. SKINNEB, OF ORCUTT, CALIFORNIA.
To all whom it may concern.'
Be it known that I, CHARLES P. SKINNER, a citizen of thefUnited States, residing at Orcutt, in the 'county of Santa Barbarajand State of California, have invented new and useful Improvements in Underreamers, of
A which the following is a specification.
This invention relates to underreamers, namely devices' for enlarging vwell holes so that the casing ma .be lowered in same as 'the development o the well hole proceeds.
In the standardform of drilling a ^recip rocating bit is operated in the formation of the well hole and this is lowered through the casing and only cuts or drills or bores a hole having a diameter substantially that of t'he inside of the well casing. ,It'therefore is necessary to ream or cut out the an nul'ar formation beneath' the casing, or the casing and'its shoe, in order to permit the casing to be further lowered. To do this underreamers are employed, and the same are used in substitution for the bit, and are re` cipocated by the beam at the mouth of the we f The present invention has for its object the provision of an improved underreamer which will be superior in point of relative simplicity and inexpensiveness of construction, taken in conjunction with positiveness in operation,`reliability and durability, facility in adjustment, safety in use, and which will be devoid of liability of the cutters and the attendant features being lost in the hole in case" 'of breakage therein or in the parts suspending or controlling same.
With the above and other objects in view,
'the invention consists in the novel an'd useful provision," formation, construction, 40\
combination, .association and relative arrangement of parts, members and features,
all as hereinafter described, .shown in the-- drawing, and finally pointed out in claims.
In the drawing:
Figure 1 is `a lvertical cential sectional View, partly in elevation and partly broken away, of 4an underreanier embodying the invention and shown in conjunction with a portion of well casing and the shoe thereof, the parts of the underreamer being shown in collapsed condition for passage through the cas'ing and its shoe;
Fig. 2 is a view similar to Fig. 1 showing the underreamer in expanded or operative condition;
Fig. 3 is a vertical sectional view, partly UNDERREAMER.
Specification of Letters Patent. Patented Dec. 14, 1920. Application led April 19, 1920'. SeraI No. 374,935. i
in elevation and partly broken away, taken on the line ac3-5U", Fig. 2, and looking'in the direction of the appended' arrows;
Fig. 4 is la transverse detail sectional view, taken upon the line m4-m1Fig. 2, and
`looking in the direction of the appended` Referring with particularity to the drawl ing, vA designates a portion of a length of well easing, with itsishoe B, within whicliis disposed the mandrel or tubular-body Cof an underreamer having at the lower end Athereof an open bowl mouth o with a prefably cylindrical internal bore, leadingV up to an annular shoulder 6 above which is pro'- vided a chamber 7 of lesser diameter than the bowl mouth o,- and within which is threaded, at the lower end, as at 8, a detachable hollow slotted extension 9 which may be prevented from turning by a lateral screw pin 9.n and through which .plays lengthwise a spring-actuated rod 10,' the coiled compression spring 11 of. which surrounds the rod, bearingat its lower end upon the top of the hollow slotted extension 9, and at its upper end beneath a bushing 12 slipped onto the upper end of the rod 10 and maintained in position of adjustment to vary the compression of the spring 1l by a nut 13 threaded to the upper end of the. rod
10. A transverse key '14 is inserted through commodates the reciprocating rod 10. This slot 17 extends from a shoulder 17 some what above the lower end of the hollow .slotted extension 9 upwardly toV a point somewhatI below the shoulder GQ- Tlie lower end of the extension, 17h` beneath theshoulder 17, is laterally extended or extended transversely of the mandrel C and its bowl e, and its ends are :notched to lit under the lower end of the ilo-wl .mouth c, as at 17C. The hollow slottedfcltension 9, in the slotted portiorgrl-N7athereof, above the transverse iin extension or partition 17h, tapers quite abruptly downwardlyto such partition 17h.' The partition 17 h acts as an expanding me1nber for the cutters D, and is provided at its lower portion with a wedge-shaped spreader 19, preferably integral with such partition 17h, providing opposed downwardly expanding surfaces 19a for the cutters, which at their upper endsmergeinto substantially parallel opposed inthrust surfaces 19h.
The shanks 16 of the cutters are prefer` partition 17D. The cutters are expanded by.
means of angularly directed inner faces 2O and 21 which are provided at their inner faces, and which cooperate with the 'wedge faces 19a, and finally with the parallel faces 19b on the expanding partition 17", bringing the inner faces 21 ultimately into iinal engagement with such .parallel opposed faces 19b when the cutters are in the finally expanded positions shown in Fig. 2. Riding shoulders 22 are' provided upon enlarged portions of the stock of the cutter bodies 28, beneath the shanks 16, and these coperate with the shoe B to cause the cutters to be drawn down over the expanding partition 17b and to collapse the same, bringing the inner faces 2O down beneath and slightly spaced froin'the'wedge faces 19, as shown in Fig. 1. The inner' faces 20 and21 are formed at the lower portions of the shanks 16 where they merge into the stock of -the `cutter bodies 23. These riding shoulders 22 merge into upthrust shoulders 24 which engage the lower periphery of the bowl mouth c when the cutters 'are expanded, 'imparting upthrust in reaming to the mandrel C. The inthrust in reaming is transmitted by the faces 20 to the parallel faces 19", and any outthrust, as above pointed out, is taken care of by the inner faces 16b of the enlarged cutter shank portions 16a.
These latter enlarged portions 1Ga are pro'- vided with lower terminal shoulders 16c which are adapted to catch 'upon the wedge partition 17h in case'the keylf parts or the rod 10 breaks, thus preventing the loss of the 'cutters in the hole and perhaps avoiding an expensive and elaborate fishing job. It will be understood that the spring 11 exerts a tendentv to maintain the cutters. D in expanded positions, and that as soon as' the cutters pass the shoe they will automatically expand into 'the reaming or expanded positions shown in Fig. 2.`
The cutter bodies 23are providedfat their lower ends and at their outer edges with cutting edges 25, and-the cutters may be dressed out and repaired as required when the same become worn, or ready replacements may be made, the same being capable of assembling,
together with the spring-actuated rod andA other parts, at the lower end of'the bowl mouth c.
The'cutters, due to the particular arrange' ment and accommodation of features of the re'amer, may be made very wide, with plenty of stock to dress-out, the inthrust is well taken care of and rotatory action prevented by the wedging partition 17h, and the cut- 'ters may execute a wide out in each stroke,
thus tending to the fast making of hole It will be seen that the key 14C takes into eyes laJL in the cutter shanks 16, which eyes are slightly .enlarged to permit the cutters to tilt or teeter upon such key.
It is obvious'that many changes and variations may be made in practising the invention, in departing from the showing of the accompanying drawing and the foregoing description, without departing from the true spirit. of the invention.
Having thus disclosed my invention, I claim and desire to secure by Letters Patent:
1. In an underreamer, the combination with a body having an open mouth at the lower end thereof, of a slotted extension arranged ywithin the mouth and provided with an expansion head, cutters provided with.
Shanks which project into the open mouth,
said shanks being formed 4with shoulder por-` sion head, cutters provided with shanks.
which extend into the mouth of the body and also provided with shoulders adapted to cooperate with the expansion head, said shanks having portions adapted to engage the expanding head to prevent loss of the cutters, a spring actuated rod slidable within the hollow portion of the extension, and a key carried by the rod and operable within the slot of the extension, said key engaging the cutter shanks.
3. An underreamer including a body formed with a spring receiving chamber and having a month at the lower end thereof. a hollow slotted extension fitted in the lowes' end. of the spring receiving chainber and projecting Vinto the mouth, a substantially annular chamber being provided surrounding the extension and the extension having an expanding head, cutters provided with Shanks proj ectng into theannular chamber and constructed for coperation with the expanding head, the upper ends of the Shanks being curved to fit around the extension and being provided with shoul- V ders adapted to engage the expanding head to prevent loss of the cutters, a spring actulated rod sldable within the hollow exten-` name to this specification in the presence of` Witnesses.
two subscribin y v ARLES P. SKINNER.
Witnesses: j
J. H. HARTMAN,
L. J. MORRIS. y
US374935A 1920-04-19 1920-04-19 Underreamer Expired - Lifetime US1362513A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US374935A US1362513A (en) 1920-04-19 1920-04-19 Underreamer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US374935A US1362513A (en) 1920-04-19 1920-04-19 Underreamer

Publications (1)

Publication Number Publication Date
US1362513A true US1362513A (en) 1920-12-14

Family

ID=23478808

Family Applications (1)

Application Number Title Priority Date Filing Date
US374935A Expired - Lifetime US1362513A (en) 1920-04-19 1920-04-19 Underreamer

Country Status (1)

Country Link
US (1) US1362513A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029354A1 (en) * 1979-11-19 1981-05-27 Leslie Henry Lategan Anchoring of roof bolts
USRE42757E1 (en) * 2000-02-15 2011-09-27 Spineology, Inc. Expandable reamer
US8906022B2 (en) 2010-03-08 2014-12-09 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
US8961518B2 (en) 2010-01-20 2015-02-24 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9517093B2 (en) 2008-01-14 2016-12-13 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9730739B2 (en) 2010-01-15 2017-08-15 Conventus Orthopaedics, Inc. Rotary-rigid orthopaedic rod
US10022132B2 (en) 2013-12-12 2018-07-17 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone
US11596419B2 (en) 2017-03-09 2023-03-07 Flower Orthopedics Corporation Plating depth gauge and countersink instrument

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0029354A1 (en) * 1979-11-19 1981-05-27 Leslie Henry Lategan Anchoring of roof bolts
USRE42757E1 (en) * 2000-02-15 2011-09-27 Spineology, Inc. Expandable reamer
US10603087B2 (en) 2008-01-14 2020-03-31 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US11399878B2 (en) 2008-01-14 2022-08-02 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9517093B2 (en) 2008-01-14 2016-12-13 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9788870B2 (en) 2008-01-14 2017-10-17 Conventus Orthopaedics, Inc. Apparatus and methods for fracture repair
US9730739B2 (en) 2010-01-15 2017-08-15 Conventus Orthopaedics, Inc. Rotary-rigid orthopaedic rod
US8961518B2 (en) 2010-01-20 2015-02-24 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9848889B2 (en) 2010-01-20 2017-12-26 Conventus Orthopaedics, Inc. Apparatus and methods for bone access and cavity preparation
US9993277B2 (en) 2010-03-08 2018-06-12 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
US8906022B2 (en) 2010-03-08 2014-12-09 Conventus Orthopaedics, Inc. Apparatus and methods for securing a bone implant
US10022132B2 (en) 2013-12-12 2018-07-17 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US10076342B2 (en) 2013-12-12 2018-09-18 Conventus Orthopaedics, Inc. Tissue displacement tools and methods
US11596419B2 (en) 2017-03-09 2023-03-07 Flower Orthopedics Corporation Plating depth gauge and countersink instrument
US10918426B2 (en) 2017-07-04 2021-02-16 Conventus Orthopaedics, Inc. Apparatus and methods for treatment of a bone

Similar Documents

Publication Publication Date Title
US2216895A (en) Rotary underreamer
US2049450A (en) Expansible cutter tool
US1362513A (en) Underreamer
US2212067A (en) Drilling apparatus
US1638337A (en) Rotary well drill
US2019047A (en) Hydraulic and spring operated expansive reamer
US797622A (en) Core-drill.
US1344327A (en) Underreamer
US2249732A (en) Off center reamer
US1062841A (en) Reamer.
US2054277A (en) Stabilized well drilling bit
US762458A (en) Underreamer.
US1004782A (en) Casing-perforator.
US1211080A (en) Drill-bit and sectional rod therefor.
US1978119A (en) Collapsible well drilling bit
US1887895A (en) Combined drill and underreamer
US1342406A (en) Underreamer
US1658125A (en) Rotary well drill
US1484527A (en) Well-drilling bit
US1662138A (en) Underreamer
US578805A (en) Thomas h
US1733452A (en) Underreamer
US1217086A (en) Underreamer.
US1585540A (en) Detachable rotary bit
US807826A (en) Underreamer.