US1524903A - Mechanism for use in combination drilling rigs - Google Patents

Description

Feb. 3. 1925'.

l.. H. BACHE Feb, 3. 1925.

. 1,524,903 L. H. BACHE MECHANISM FOR Usz IN COMBINATION DRILLING ams iled June 25, 192s s sheets-sheet 2' gnou do@ Feb. 3.1925. Y 1,524,903

L. H. BACHE MEGHANISM- FOR USE IN COMBINATION DRILLING RIGS Filed June 25, 1923 3 Sheets-Sheet 3 Il l l l z@l use in, what is termed in the art, combina- Patented Feb. 3, 1925. 1

LOUIS H. BACHE, 0F TOBRANCE, CALIFORNIA;-

'i 1,524,903 'I UNITI-:n STATES PATEN'I ori-"ics,

HEOHANISM FOBf USE IN.ICOMBINATION DRlLLING RIGS.

'Application inea June 25, 192s. serial No. 641,509. Y

To all 'whom z't may concern.'

Be it known that I, Louis H. Bacini, a citizen of the United States, residing at Torrance, in the county of Los Angeles and State of California,have invented a new and useful Mechanism for Use in Combination Drilling Rigs, of which the lfollowing is a specication.,

This invention relates to mechanism for tion drilling rigs, which rigs include the equipment for handling cable tools and the equipment for handling rotary drillingtools so that both equipments may be operated through a common tower or derrick.

Combination rigs have gone into wide use in the drilling of oil wells since it has been found that certain formations can best be drilled only with the cable tools and certain formation or drillin o erations jcan 2o irl? best'be carried out only t ough the use of the rotary drilling tools. Mo-reover, the presence of both types of equipment in the errick permits reater ease 1n operating either, set of dr' ing tools and a larger safety factor. Thus, in a combination rig, lthere is present both the -calf wheel of the cable tools and the draw works of the ro- 'tary equipment, 'either of which may be used to raise or lower the casing or drill pipe and Aupon the breaking down of either the calf wheel or draw'works the raising or lowering of the casing'or drill pi e may be continued with the otherreel.

the use of the combination ri 'gives more \casing is passed and t e .sheaves are dis` variety ofs'peeds of raising or owering the drill pipe or casing than can be obtained from either of the equipments separately.

-In such a combination ri the top of the tower has been provided wit a crown block plurality of sheaves from which includingua e for raisin orlowering the av wire posed so that a line may be' taken. from the sheaves in a direction arallel to the reel which is to be emplloye in raisin or lowering4 the'line. It as heretofore een necessary when shifting from the operation of cable tools to the operation of the rotary tools to turn the crown block around on the top ofthe derrick if the sheaves are to be aligned with the reel then operating4 the line. This switching around of the crown block necessarily involves a loss of considerable Atime in the drillingrperation -which is frequently important. us when urther,

either the calf 'wheel or draw works is beingemployed toraise or lower the'casing a break down of' theV reel operating mechanism may occur at a time in which the movement of the casing must be continued or the casing will freeze in the Well.`

- BEISSUED Occaf sionally inthe art a line is run directly toi'apid wear on the bearings, sheave and ering 'the casing or drill pipe which nicchanism provides a common wire line connection between both the calf wheel and draw works and the vcrown block, so that the line may be operated from either the cali wheel and draw works while each end of the line is parallel. to the sheave of the crown block' receiving that end, whereby changes from cable tools to rotary tools may be made igithgut the necessity of adjusting the crown oc Another object of this invention is to provide a mechanism including a sheave attachment for the customary crown blocks now in use, whereby the present combination rigs may, with a relatively small cost, be

equipped with the'sheave attachment for 'connecting a line to both the calf wheel and draw works from the crown .block While'maintaining the ends of thc line parallel to the sheaves receiving the saine.

Other' ob'eets and advantages of this invention wil be appai'ent'from the description hereinafter contained and will present themselves in the practice ofthe invention.

In the yaccompan 'ing drawings there is illustrated a pre erred embodiment. or method of vembodiment of the invention in which- Figure 1 is' an elevation of such parts of a combination rig including the invention as is necessary tion thereof.

. 2 is a plan View oi the loor of the derrick'. showing the relative position of the calf wheel and draw works;

Fig. 3 is a plan view -of the crown block employed in this invention.

Fig'. 4 is an elevation at right angles to to' disclose the opera Fig; 3

' ig. a diagrammatic view of a wire ally indicated at 3.

line connection proper for using the operating mechanism, generally indicated :1t-2, and the rotary tool mechanism, gener- Such mechanisms gen- I erallyextend from thc well hole, indicated `r at f4," at right angles to eachl other.

cable tool equipmentl may include a suit- The able prime mover 5 driving a band wheel 6 through a belt 7 from which the calf wheel 8 may be driven through a second belt 9. The details of construction of the calf wheel and operating mechanism are Well understood 1n theV art and need not be further described. lThe rotary tool equipment mayinclude a suitable rotary table -10 driven through a chain or shaft 11 from a second shaft 12 which shaft is driven from a s econd prime mover (not shown from the drive 13. The draw works o the rotar tool mechanism is illustrated at 14 whic draw Works is employed during the rotary method of drilling for raising or lowering casing or drill pipefrom a wire line passing from the top of the derrick 1. p 15 generally indicates the crown block of this invention which includes the customary water table 16 which mountsa pluralit of parallel I-beams 17 which are boltedY or otherwise secured to the table, as indicated at 18, and which I-beams 17 support a number of spaced crown block bearings 19 which are dlsposed to receive. `shafts transverse to the beams 17 2O indicates a numbetween the parallel beams 17 and mounted to rotatein parallel planes. The sheaves are-mounted to rotate on an axis parallel V to the 'axis of the calr` wheel 8 or are mounted to rotate on an axis parallel .to the .draw works 14. Preferably, however, the axis of the sheaves 2Q is maintained parallel to the calf wheel 8.

As shown in the preferred form of the invention, in Fi re 3, six of the sheaves 2O vare included 1n the main group, two in each row, with the central row offset or staggered slightly with relation'to the outer rows, in order that the lines from the several sheaves will be somewhat spaced apart and pre-vented from entanglin p 22 `'indicates a sheave disposed to rotate in a plane at an angle to the remaining sheaves 20, being disposed at preferably 90 to such sheaves 20 and positioned to receive a line directly from the draw works 14 in a dlreotion parallel to the plane of the sheave 22. For mounting this angled ksheave 22 a beam 23 is provided parallel to .water table b5 the beams 17 and `extending across the l 16. Transverse beams 24 are supported upon the 23 and the fissa-,eee l 17 next adjacent the beam 23 and extend transversely to such beams 17. Said beams 24 'support crown block lbearings 25 in which 'the sheave 22 is journaled. Referring to Fig. 5 the use and operation of the mechanism *is diagra-imnatically illustrated. From |the draw works 14 a wire line 26\ asses over the angled sheave 22 from which it extendsdownwardly throu h the derrick and is trained around one of t e sheaves 27 of a. traveling block 28. From the traveling blockv 28 the line 26 is trained around lthe sheaves 20 and remaining sheaves 2 7 of the traveling block finally extending from one of the sheaves 20 to the calf wheel 8 in a direction substantially parallel to the plane of said sheaves 20.

By this construction 'the casing or tubin may be supported from the traveling bloc 28 through a hook 29, or other means, and the traveling block 28 is supported from the crown block 15 on the wireline 26each end of which Wire line extends to a reel in a plane. substantially -parallel to the sheave from which the end extends, and thus either reel, i. e., the calfv wheel or draw works, may be employed for raisin or lowering the line, the other end of theine being the fixed end and in case it is desired to transfer from one type of drillin tools to the other type of drilling too s, 'the line 26, .crown block 15 and traveling block 28 are already .in position for immediately continuing the operation with sthe second-type of quipment. In allcases the pull on the line is directed in the direction in which the least wear upon the line and travelingblocks will take place.

While the .mechanism herein described is well suited for the urposes of this invention, it` is not the intention to limit the invention tothe specific embodiment heretofore described butvarious modifications may be made within the spirit of the inventon. 'Ihis invention is of the scope set forth in the appended claims.

I'claim: n p.

1. In mechanism of the class described, the combination of a tower, two independent line reels mounted to rotate on axesv at a substantial angle with each other, a crown block on the tower providin a plurality of rotatable sheav es, one `s 'eave being mounted to rotate on an axis substantially parallel to one of the reels and` another lll sheave being mounted to rotate on an axis parallel tof the other reel,-a traveling block,

and a line extending from? one* reel overthe sheave 'having an axis-parallel to the axis 4of said reel, supporting said traveling block from thecrown block, and extendinfr v 2. In a combination rig, the combination 13 of a tower, a traveling block, a calf wheel adjacent the tower, a draw works adjacent the tower and mounted to rotate on an axis at a substantialf angle 'to the axis of the calf Wheel,l a crown block on the tower havng'a sheave mounted to rotate on lan axis substantially parallel to the -axis of the calf wheel and a sheave mounted to rotate on an axis substantially parallel to the draw works, and a line extending from the calfv 10 wheel over the iSt sheave supporting the traveling block and extending from the last.

`she'ave to the draw works.

Signed at Torrance, Calif., this 14th day of June 1923.

LOUIS H. BACHE.

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