US1766253A

US1766253A - Drilling tool

Info

Publication number: US1766253A
Application number: US586932A
Authority: US
Inventors: Hollestelle Jan Hendrik
Original assignee: KENNEDYE CORP
Current assignee: KENNEDYE Corp
Priority date: 1922-09-08
Filing date: 1922-09-08
Publication date: 1930-06-24
Anticipated expiration: 1947-06-24

Description

J1me 1930- J. H. HOLLESTELLE 1,766,253

DRILLING TOOL Original Filed Sept. 8, 1922 2 Sheets-Sheet 1 (27/. Amman/6;

WlTNESS:

ATTORNEY 5mm 24 W30. J. H. HQLLESTELLE 3 DRILLING TOOL Original Filed Sept. 8, 1922 2 Sheets-Sheet 2 J'H fiallesielle.

INVENTOR WXTNESS: ATTORNEY Patented June 24, 1930 UNITED STATES JAN HENDRIX HOLLESTELLE, or s'r. LOUIS, MISSOURI, assienonro rnEfxnNnEnYE conroaarron or wnmmoron, nnnnwnnu, a coaroan'rronor DELAWARE" DRILLING 'roor."

Application filed September a, 1922. sci-mine. 586,932. aeneweazany-12,,gisza' jf 1 f This invention relates to well drilling tools and has for an object the provision of a tool of this character which includes both a center bit and a lateral extension bit, whereby a drilling and reaming operation is provided and which is capable of use either as a rotary or an impact drilling tool.

Another object of the invention is the provision of a normally retracted lateral extenm sion bit having means whereby the latter will be automatically extended when the tool reaches its lowered or drilling position.

Another object of the invention is the prolowered, together withmeans for automatically releasing the lowering means to permit operation of the lateral bit extending means.

With the above and other objects in View,

. the invention further includes the following novel features and details of construction, to

be hereinafter more fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings Figure l is a side elevation of a drilling tool constructed in accordance with the invention with the drill. shoe and casing shown a in section and a lateral extension bit ex- 3 tended,

Figure 2 is a central vertical sectional view of the same with the :lateral extension bit retracted and the parts in the position as- 5 sumed before the tool reaches its lowered position. i

Figure 3 is a view similar to Figure 2 with the lateral bit extended and locked in extended position.

Figure 4 is a section on the line 4-4 of Figure 1.

Figure dis a section on theline 5-5 of Figure 2.

. "Figure 6 is a 5 Figure 3. I

Figure 7 is a detail s'ectional view of the lower end of the bit carrying member, the section being taken at right angles to Figures 2 and 3.

Figure 8 is an edge View of the lateral bit.

section on the line of vision of means whereby the tool may be:

Figure 9'is a detail elevation of'the guide for the extension bit. i p Figure 10 is a detail sectional viewiof' the drill shoe. i I Figure 11 is a detail elevation of the low-j ering'tool. Referring in detail to the drawings, the invention is shown. as-including a drill shoe 15, which is interiorly threaded at its upper end for connection with the lowermost section 16of a casing of any standard type.) The shoe 15 is provided with oppositely located sockets 1'7 and with spiral grooves 18 and '19., both of which are in communication with a longitudinally disposed groove 20. 5

Located within theshoe l5 and movable longitudinally therein is a bit carrying inember 21, whose lower end is providedwith a threaded socket 22 for the'reception of various types of bits, coring devices and so forth. 7 Secured within this socket 22 is the shank 23 of a center bit 24,- the said shank being provided with longitudinally disposed passages 25 which communicate with a. passage 26 provided in the bit carrying member '21, whereby water may be fed to the center bit. The upper end of the bit carrying member 21 is provided with springfingers 27' having lugs 28 at their free ends and these lugs: are adapted to engage in the, sockets .17ofl the drill shoe'for the purpose of holding the member '21" against longitudinal movement with res ct to said shoe.

cated within the bit carrying member 21 are spaced guides 29 having grooves 30 therein adja /fcent the inner periphe'ry'of the member 21 vso as to provide passages for the water to tl 'ecenter bit. In addition, the bit carrying member 21 is provided with downwardly and outwardly extending passages 31, which also serve as water passages; The guides 29 have their lower ends arranged upon opposite sides of a spacing rib 32 whichf" is carried by the bit carrying member 21' and positioned between the guides 29 and resting 95 upon thisrib 32 is'an extension bit 33, the latter being provided at its'lower outer corner with a cutting element 34. An edge plate 33" is securedto the bit 33 by means of screws 33". When the bit 33 is projected in the position shown in Figures 3 and 4 of the drawings, this cutting element 34 will act as a reamer to enlarge the bore made by the centerbit 24. The bit carrying member 21 and the shoe 15 are provided with longitudinally disposed slots and 36 respectively so as to permit of the extension of the bit 33. Extending from opposite side faces of the bit 33 are upper and lower pins or studs 36', which.

are movable in vertically disposed curved grooves 37 provided in each of the guide members 29, while the bit carrying member 21 is provided with a stud 38 carried by a spring 38" and which operates in the

grooves

18, 19 and 20. This permits of the bit carrying member being moved with respect to the dIlll shoe and when so moved the said member will carrywith it the guide members 29 and the grooves 37 will cause the bit 33 to be extended throu h the

slots

35 and 36. When in this extended position, a stud 39 which is carried by the bit 33 engages a socket 40 provided in the shoe 15 so as to prevent any tendency to upward movement. 1

The carrier bolt 41' extends transversely across the bit carrying member 21 above the bit 33, while the guide members 29 are connected'at their upper ends by a head 42. Ex-

tending from this head 42 is a shank 43, Whose upper end carries a beveled or cone-shaped head 44 having a shoulder 45 at its juncture with the shank 33. This head is adapted to be received within the jaws 46 of a lowering tool 47. The opposed faces of these jaws are upwardly and inwardly inclined as shown at 48, while their lower ends carry inwardly extending lugs 49 which are adapted to engage the shoulders 45 so as to grip the head 44. A

wedge pin 50 extends between thej aws 46 and acts to force these jaws apart to release the .lowerin tool fromthe head 44, as will be hereinafter apparent. q

The tool is lowered within the shoe 15 until the stud 38 enters either of the

grooves

18 or 19 and is permitted further downward move:

ment, the particular groove entered causing the tool .to rotate so as to bring the'lugs 28,

. directly above or l-.line with the sockets 17.

When thetool is in this position, the bit 34 is in line with

the'slots

35 and 36, the upper end of said bit being above the upper end of the slot, and the stud 38' at the upper end of the. slot 20. This osition of the shown in Figure 2 o the'drawings. downward movement of thetool will bring the lugs 28 into position to enter the sockets 17, the, tool being guided by the downward travel of the lug 38 in the ve'r tical' slot 20. During this further downward movement of the tool, the bit 34 will have reached a position opposite the

slots

35 and 36, and as the lugs 28 have entered the sockets 17 the head 42 is released from its position upon these lugs and is permitted downward movement 5 so-that the spaced guides 29 will move down- :ister, a bifurcated member and movable independently'of thebit carrying member, and interengaging means bearts is urther ward independently of the member 21. During this downward movement engagement of the studs 36 with the walls of the grooves 37 will force the bit 34 outward through the

slots

35 and 36, so that the parts will then be arranged as shown in Figure 3 of the drawings. By permitting the lowering tool 47 to move downward, the wedge 50 will engage the lugs 28 or the head 44, so that' the wedgewill be forced inward between the jaws to move said gaws relatively outward and release the tool. his position of the parts is illustrated in Figure 1 of the drawings.

The invention is susceptible of various changes in its form, proportions and minor details of construction and the right is herein reserved to make such changes as properly fall within the scope of the appended claims.

Having described the invention what is claimed is I 1. In a drilling tool, a casing carried shoe having a slot therein, a bit carrying member movably positioned within the shoe and also having a slot therein, a normally retracted lateral extension bit Within the bit carrying member, interengaging means between the shoe and bit carrying member to bring the slots into register when the said bit carrying member is moved within the shoe, means to lock the bit carrying member and shoe against relative movement when the slots are'in register, and means 0 erable when the bit carrying member and sihoe are locked together to force the bit laterally through the slots.

2. In a drilling tool, a casing carried shoe having a slot therein, a bit carrying member movably positioned within the shoe and also having a slot therein, a normally retracted lateral extension bit within the bit carrying member, interengaging means between the shoe and bit carrying member to bring the slots into register when the said bit carrying member is' moved within theshoe, means to lock the bit carrying member and shoe against relative movement when the slots are in reglocated within tween the bifurcated member and bit to move said bit-laterally through the slots when the bifurcated member is independently moved. In testimony whereof I afiix my signature. JAN HEN DRIK HOLLESTELLE.