USRE17981E - Mechanism fob use in combination thrilling bios - Google Patents

Description

L. H. BACHE F b 24, 1931 MECHANiSM FOR USE IN COMBINATION DRILLING RIGS R 17 981 Original Filed June 25, 1923 5 Sheets-Sheet 1 L. H. BACHE F b. 24 1 931 MECHANISM FOR USE IN COMBINATION DRILLING RIGS R .17"9 1 firiginal Filed..Jun 25, 5 Sheets-Sheet 2 I J E?.

L. H. BAcHE MECHANISM FOR USE IN COMBINATION DRILLING RIGS Feb. 24, 1931.

Gfigm filed June 25, 1923 3 Sheets-Sheet 3 Reissued Feb. 24, 1931 UNITED STATES PATENT OFFICE- LOUIS H. EAGEE, OEROGHESTER, NEW YORK, ASSIGNOB TO THE NATIONAL SUPPLY COMPANY DELAWARE, 01 NEW YORK, N; Y.,' A CORPORATION 01 DELAWARE MECHANISM FOR USE IN COMBINATION DRILLING BIGS Original No. 1,524,903, dated Febraary 8, 1925, Serial No. 647,569, filed June 25,39. Application for reissue filed January 28, 1928. Serial 1T0. 248,982.

Combination rigs have gone into wideuse in the drilling of oil wells since it has '10 been found that certain formations can best be drilled only with the cable tools and certain formations or drilling operations can best be carried out only throu h the use of the rotary drilling tools. oreover, the

presence of both types of equipment in the derrick permits greater ease in operating either set of drilling tools and a larger safety factor. Thus, in a combination rig, there is present both the calf wheel of the cable tools and the draw works of the rotary equipment, either of which may be used to raise or lower the. casing or drill pipe and upon the breaking down of either the calf w eel or draw works the raising or lowering of the casing or drill pipe may be continued with the other reel. Further, the use of the combination rig gives more variety of speeds I of raising or loweringthe drill p1pe or cas- 1 ing than can be obtained from either of the 3. equipments separately. q In such a, combination riglthe top of the tower has been provided wit a crown block including a lurality of sheaves from which a wire-line or raising or lowering the casing is passed and the sheaves are disposed so that a line may bei taken from the sheaves in a direction arallel to the reel which is to be employed in raising or lowering the line. It has heretofore been necessary when shifting from the operation of cable tools to the operation of the rotary tools to turn the crownblock around on the top of the derrick if the sheaves. are to be aligned with the reel when operating the line. switching around of the crown block necessarily involves a loss-of considerable time in the drilling operation which is f uently important. Thus when either the cal wheel or draw works-is being employed to raise or lower the casing a break down of the reel This ering the casing or drill pipe which mechav msm provides a common wlre lme connection betweenboth the calf wheel and draw works and the crown block, so that the line may be operated from either the calf wheel or draw works while each end of the line is 7 parallel to the sheave of the crown block receiving that end, whereby change from cable tools to rotary tools may be made with out the necessity of adjusting the crown block.

vide 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 the line parallel to the sheaves re ceiving the same.

Other objects and advantages of this in-v vention will be apparent from the description hereinafter contained and will present themselves in the practice of the invention.

In the accom .anying drawings there is illustrated a pre erred embodiment or method of embodiment of the invention in which- Figure 1 is an elevation of such parts of a combination rig including the invention as is necessary to disclose the operation thereof. Fig. 2 is a plan view of the floor of the derrick showin the relative position of the calf wheel and raw works.

Fig. 3, is a plan view of the crown block employed in this invention. Fig; 4 is an elevation at right angles to Fig. 3.

Another object of this invention is to pro-f Fig. 5 is a diagrammatic view of a wire line connection proper for using the mechanism.

In the drawings 1 generally indicates a tower to which is connected the cable 'tool operating mechanism, generally indicated at 2, and the rotary tool mechanism, generally indicated at 3. Such mechanisms generally extend from the well hole, indicated at 4, at

right angles to each other. The'cable tool equipment may include a suitable prime mover 5 drivin a band wheel 6 through a belt 7 from whlchthe 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 in the art and need not be further described. The rotary tool equipment may include a suitable rotary table 10 driven through a chain or shaft 11 from a second shaft 12 which shaft is driven from a second prime mover (not shown), from the drive 13.- The draw works of the rotary tool mechanism is illustrated at 14 which draw works is employed during the rotary method of drilling for raising or lowering casing or drill pipe from a wire line. passing from the top of the derrick 1. a 1

15 generally indicates the crown block of this'invention which includes the customary water table 16 which mounts a plurality of parallel I-beams 17 which are bolted or otherwise secured to the table, as indicated at 18, and which I-beams 17 su port a number of spaced crown block'bearmgs 19 which are disposed to receive shafts transverse to the beams 17. 20 indicates a number of parallel sheaves which are journaled in the -crown block bearings 19 and spaced between the parallel beams 17 and mountedto rotate in parallel planes. The sheaves are mounted to vrotate on an axis parallel to the axis of the calf .wheel 8 or are mounted to rotate on-an ably, however, the axis of the sheaves 20 is maintained parallel to the calf wheel 8.

As shown in the preferred form 015 the invention, in Figure 3, six of the sheaves 20 are included in the main group, two in each row, with the central rowoffset or staggered slightly with relation to the outer rows, in order that the lines from the several" sheaves will be somewhat spaced apart and prevented from entanglihg. I I

22 indicates a sheave disposed to rotate in a plane at an angle to the remaining sheaves 20, being disposed at preferably to such sheaves 20 and positioned to receive a line directly from the draw works 14 in a direction parallel to the plane of the sheave 22. For mounting this angled sheave 22 a beam 23 is provided parallel to' the beams 17 'and extending across the water table 1.6. Transverse beams 24 are supported upon the beam 23 and the beam 17 next adjacent the beam 23 and 26 passes .over the angled sheave 22 from which it extends downwardly through the derrick and is trained around one of the sheaves 27 of a traveling block 28. From the traveling block 28 the line 26 'is trained around thesheaves 20 aiid' remaining sheaves 27 'of the traveling blockfinally 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 tubing 1 may be supported from the traveling block 28- througha hook 29, or other means, and the traveling block 28 is supported from the crown block 15 on the wire line 26, each 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 calf wheel or draw works, may-be employed for raising or lowerin the line, the other end of the line being the xed end and in case it is desired to transfer from one type of drilling tools to the other type of drilling tools, the line 26, crown block 15, and traveling block 28 are already in position for immediately continuing the operation with the second type of equipment; In all cases the pull on the line is directed in the direction in which the least wear upon the line and traveling blocks will take place.

While the mechanism herein described is well suited for the purposes of this invention, it is not the intention to limit the invention to the specific embodiment heretofore described line reels mounted to rotate on axes at a substantial angle with each other, a crown block on the tower providing a lurality of rotatable sheaves, one sheave being mounted to rotate on an axis substantially parallel to one of the reels and another sheave being mount reel, a traveling block, and a line extending from one reel over the sheave having an axis parallel to the axis of said reel, sup porting said traveling block from the crown block, and extending to the second reel from I 125 the sheave mounted to rotate on an axis parallel to said second reel.

2. In a combination rig, the combination of a tower, a travelin adjacent the tower, a the tower and mounted to rotate on an axis ed to rotate onan axis parallel to the other block, a calf wheel raw works adjacent 70 trated. From the draw works 14 a w1re line Y a in the draw works.

3. In a crown block, the combination of lower sheave means, members sup orting said lower sheave means arranged or installation in a derrick top, supporting structure extending upwardly from said members, a and upper sheave means supported above said x lower sheave means by said structure, the

upper sheave means being disposed in a vertical plane substantially perpendicular to the \plane of said lower sheave means.

4. In a crown block construction for oil derricks,\the combination of a plurality of "parallel Ebeams, a plurality of sheaves rotatably mounted on the Ir-beams, a pair of n I-beams mounted at right angles to the first a0 sheaves.

said I-beams, and a sheave mounted on the latter said I-beams in a vertical plane substantially perpendicular to the planes of the first said sheaves and above the first said 5. In a crown block construction for oil derricks, the combination of aplurality of sheaves, means for rotatably supporting said sheaves, a supporting structure extending as above the said sheaves, and upper sheave means journaled in spaced bearlngs secured to the supporting structure in a horizontal plane above the horizontal plane of the axes of the first said sheaves, the upper sheave m means being supported in a vertical plane substantially perpendicular to the planes of the first said sheave means.

6. In a crown block, the combination of: lower sheave means; members supporting said lower sheave means, arranged for installation in a derrick top; removable supporting structure extending upwardly from said members; and upper sheave means supported above said lower sheave means by said structure, the upper sheave means being disposed in a vertical plane substantiallyperpendicular to the plane of said lower sheave means.

Signed at Syracuse in the county of Onondaga, and State ofhjlew York, this 3d day 5 of January, 1928;

LOUIS H. BACHE.

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