US3317103A - Apparatus for handling hose or similar elongate members - Google Patents
Apparatus for handling hose or similar elongate members Download PDFInfo
- Publication number
- US3317103A US3317103A US452631A US45263165A US3317103A US 3317103 A US3317103 A US 3317103A US 452631 A US452631 A US 452631A US 45263165 A US45263165 A US 45263165A US 3317103 A US3317103 A US 3317103A
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- apparatus
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- means
- sprocket
- shaft
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- 238000010010 raising Methods 0 claims description 5
- 238000005553 drilling Methods 0 description 15
- 230000035611 feeding Effects 0 description 5
- 230000015572 biosynthetic process Effects 0 description 4
- 238000010276 construction Methods 0 description 4
- 230000001976 improved Effects 0 description 4
- 239000003638 reducing agent Substances 0 description 4
- 241001559589 Cullen Species 0 description 3
- 239000011799 hole materials Substances 0 description 3
- 239000004452 animal feeding substances Substances 0 description 2
- 230000001276 controlling effects Effects 0 description 2
- 238000005755 formation Methods 0 description 2
- 230000000979 retarding Effects 0 description 2
- 239000000460 chlorine Substances 0 description 1
- 230000000694 effects Effects 0 description 1
- 239000003502 gasoline Substances 0 description 1
- 230000001965 increased Effects 0 description 1
- 239000000463 materials Substances 0 description 1
- 238000009740 moulding (composite fabrication) Methods 0 description 1
- 230000003405 preventing Effects 0 description 1
- 230000002829 reduced Effects 0 description 1
- 230000036633 rest Effects 0 description 1
- 239000011435 rock Substances 0 description 1
- 239000007787 solids Substances 0 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick
- E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
Description
y 2, 19.67 R. H. CULLEN ETAL 3,317,103
APPARATUS FOR HANDLING HOSE OR SIMILAR ELONGATE MEMBERS Filed May 3, 1965 2 Sheets-Sheet 1 Roy (u/A90 [ear //6 fl. fi/cfia/a J INVENTORJ 71A- K- M ATTORNE VJ y 1967 R. H. CULLEN ETAL 3,317,103
APPARATUS FOR HANDLING HOSE OR SIMILAR ELONGATE MEMBERS Filed May 3, 1965 2 Sheets-Sheet 2 N Ray Cu//e/7 LeJ//e fl. fi/cfiawo s INVENTORJ i 1 0k #X United States Patent 3,317,103 APPARATUS FOR HANDLING HOSE 0R SIMILAR ELONGATE MEMBERS Roy H. Cullen, Suite 1931, 500 Jefferson Bldg., Houston, Tex. 77002, and Leslie D. Richards, Houston, Tex.; said Richards assignor to said Cullen Filed May 3, 1965, Ser. No. 452,631 3 Claims. (Cl. 226-173) This invention relates to new and useful improvements in apparatus for handling hose or similar elongate members.
In United States Patent No. 2,892,535, an apparatus is disclosed for handling an elongate member, such as a flexible pipe or hose, in well operations. The present invention is an improvement on such apparatus in that it provides a new and improved control assembly for such apparatus which controls the feeding-off or lowering of the flexible pipe or hose with the apparatus. Although such control assembly is particularly suitable for use with the apparatus of said Patent No. 2,892,535, it may be used with other apparatus for feeding-off 0r lowering an elongate member.
It is therefore an object of this invention to provide a new and improved control assembly which is suitable for use with apparatus such as that disclosed in United States Patent No. 2,892,535, or similar apparatus, for controlling the feed-off or lowering of an elongate member with such apparatus.
Another object of this invention is to provide a new and improved apparatus wherein an elongate member such as a flexible drill pipe or hose having a drill bit at the lower end thereof is fed or lowered at a controlled rate which is related to the rate of drilling progress so that the proper weight can be maintained on the drill bit during drilling.
A further object of this invention is to provide a new and improved apparatus for raising and lowering an elongate mem ber, wherein a main drive is provided [for stopping or retarding the lowering of the elongate member, and an auxiliary drive means is provided for overriding the braking action to control the feed-01f or lowering of the elongate member.
The preferred embodiment of this invention will be described hereinafter, together with other features thereof, and additional objects will become evident from such description.
The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings forming a part thereof, wherein an example of the invention is shown, and
wherein:
FIG. 1 is an elevation, partly in section, illustrating the preferred form of the apparatus of this invention;
FIG. 2 is a plan View taken on line 22 of FIG. 1, but illustrating the apparatus in a horizontally extended position to more clearly illustrate the relationship of the parts thereof;
FIG. 3 is a plan view illustrating one type of variable speed motor used in the apparatus of FIG. 1; and
FIG. 4 is an elevation, partly in dotted lines, illustrating the variable speed motor of FIG. 3.
In the drawings, the letter A designates generally the apparatus of this invention which includes an endless assembly or retract-or R, preferably of the type illustrated in United States Patent No. 2,892,535, or other suitable apparatus for handling an elongate member P such as a flexible pipe or hose. Briefly, the apparatus A is adapted to be operated so that the flexible pipe P is raised and lowered with respect to a well W, generally for the purpose of drilling such well W. A drill bit (not shown) of conventional construction is normally disposed at the lower end of the flexible pipe P, and by reason of the improve- 3,317,103 Patented May 2, 1967 "ice ments present in the present apparatus A, the rate of feed-off or lowering of the flexible pipe P and the drill bit therewith is controlled so as to be properly related to the rate of drilling progress with the bit in the particular formations encountered during the drilling of the well W.
Considering the invention more in detail, the apparatus A preferably includes a skid or base 10 upon which the entire apparatus A is mounted to facilitate the moving of the apparatus A to different drilling locations. The skid or base 10 rests upon the ground G or substructure at the location for the drilling of the well W. The skid 10 has suitable framework welded or otherwise mounted thereon, including spaced support plates 11 for supporting a pair of laterally spaced stub shafts 12. A pair of spaced upright frame members 14 are bolted or otherwise secured to lower frame members 11 for the purpose of supporting upper stub shafts 15 which are laterally spaced with respect to each other. The framework also includes laterally spaced horizontal frame bars 18 which are welded or otherwise suitably joined to angled or vertical frame members 19 and 20. A brace 21 connected to a triangular shaped frame element 22 is provided for each of the upright frame members 14 to strengthen same if desired.
In the preferred form of the invention, the upper stub shafts 15 each preferably has an upper sprocket 16 rotatably mounted thereon for engagement with the links of the endless assembly R. Similarly, each of the lower stub shafts 12 has a lower sprocket (not shown) thereon which engage with the links of the endless assembly R. At least one of such lower sprockets is usually driven by driving a sprocket 25 mounted on the shaft 12, and outwardly connected to a driving source, as will be more fully explained.
Chains or drive belts 26 are disposed around the sprocket 25 and are operably connected with a small diameter sprocket 27 mounted on a sprocket shaft 28. Preferably, such sprocket shaft 28 is suitably mounted on the pair of laterally spaced angled braces 21 (FIG. 1). A large diameter sprocket 30 is also mounted on the sprocket shaft 28 and it has chains or drive belts 31 operably connected thereto and also to a smaller diameter sprocket 32 disposed on a brake shaft 33 (FIGS. 1 and 2).
The brake shaft 33 preferably has a plurality of brakes 35 of the electric actuation type mounted on the brake shaft 33 for stopping the rotation of the shaft 33 and the parts operably connected thereto so as to provide a holding means for the endless assembly R. Another sprocket 37 is mounted on the shaft 33 to which chains or drive belts 38 are operably connected. The other end of the endless chain 38 is disposed on a smaller diameter sprocket 40 which is mounted on a clutch shaft 41. The clutch shaft 41 has a large diameter sprocket 42 mounted thereon with chains or drive belts 43 extending therefrom to a sprocket 44 on the drive shaft 45 of the main drive means or engine 46. Such main drive engine 46 is of conventional construction and is either a diesel, gasoline, or other type of engine which has therewith a torque converter or fluid drive 47 for driving the shaft 45.
The clutch shaft 41 has clutches S0 and 51 mounted thereon so that either of such clutches may be connected for operation, as will be explained, or they may be both disconnected, as will also be explained. Thus, when the clutch 51 is disengaged and the clutch 50 is engaged, the rotation of the shaft portion 41a leading from the sprocket 42 imparts a rotation to the sprocket 40 and thus drives the chain 38 for operating the sequence of chains up to the sprocket 25, whereby the sprocket 25 is turned in a clockwise direction as viewed in FIG. 1 to effect a raising of the flexible pipe P with the endless assembly R as the gripping elements of the assembly R pull the pipe P upwardly during the rotation of the endless assembly R.
However, when the clutch 50 is disengaged the drive from the shaft 41a is not transmitted to the sprocket 40, but instead the drive is transmitted to a sprocket 52 which has a chain or drive belt 53 connected thereto and also to a sprocket or pulley 54 on a gear reducer 55. The gear reducer 55 has a sprocket 56 on the output side thereof to which is connected a chain or belt 57 and which is also connected to a sprocket or pulley 58 on the brake shaft 33. The direction of rotation of the shaft 33 is reversed when driving through the clutch 51 as compared to when driving through the clutch 50 by reason of the gear drive 55 so that the sprocket 25 is rotated counterclockwise when the clutch 51 is engaged to lower the flexible pipe P with the endless assembly R.
When the elongate member P has been lowered to the point at which drilling is to proceed with the drill bit (not shown) on the bottom of the well W, the rate of feed-off or lowering of the flexible pipe P is controlled by disengaging the clutches 50 and 51 so that the motor or engine 46 is completely inoperative insofar as driving the endless assembly R is concerned. Such feed-off or lowering during drilling is controlled by an auxiliary drive means which in the preferred form of the invention includes a hydraulic or fluid-driven motor 60, preferably of the variable speed type which is controlled by the operator who may vary the hydraulic fluid volume supplied to the motor 60. The motor 60 may be operated by electricity or by any other suitable means, but in the present form it is operated by hydraulic fluid. Such motor 60 is made so that it can be moved on a fixed base 61 or other suitable support for changing the diameter of a pulley 62 which is driven by the motor 60. For the purpose of changing the position of the motor 60 on the base 61, a threaded crank shaft 62 having a handle 62a: is preferably provided so that when the pulley 62 is in the solid line position of FIG. 3, the diameter of the pulley 62 is at the maximum for providing a maximum speed for the drive belt 63 connected thereto. When the pulley 62 has been spread apart in the conventional manner by adjusting to the dotted line position of FIG. 3, the pulley 62 is in its minimum diameter position and the belt 63 connected thereto is likewise being operated at the minimum speed. Such expansible type of pulley 62 is of conventional construction for providing variable speeds with the motor 60. The belt 63 is connected to a driven pulley 65 which is mounted on a shaft of a gear reducer 70. The gear reducer 70 has a pulley or sprocket 71 mounted on the output side thereof to which is connected a chain or pulley 72 which has connection with a belt or sprocket 73 mounted on the same shaft as the sprocket or pulley 54. A clutch 75 is disposed on the shaft carrying such sprocket or pulley 73 so that when the clutch 75 is engaged, the auxiliary drive motor 60 is imparting rotation through the gear drive 55 to the brake shaft 33. It will be understood that when the clutch 75 is engaged, the clutches 50 and 51 are disengaged, and suitable safety apparatus is provided for preventing a connection of the clutch 75 when either of the clutches 50 or 51 are engaged.
In the operation or use of the apparatus A of this invention, the flexible pipe or hose P is initially lowered into the well W to the bottom thereof, so that drilling can proceed to a greater depth. During such running in or lowering of the flexible pipe or hose P, the weight of the flexible pipe P and other weights suspended therefrom such as drill collars and drill bit (not shown) may be sufficient to cause the drill pipe P to move downwardly by the force of gravity, but normally the friction involved in the endless assembly R is such that it is necessary to rotate the endless assembly R in a counterclockwise direction for running the pipe P into the hole of the well W. For such purpose, the engine 46 is utilized with the clutch 50 disengaged and with the clutch 51 engaged. The clutch 75 is also disengaged. Therefore, the drive from the engine 46 is through the chain 43, the chain 53, the chain 57, the chain 31 and the chain 26 to the drive sprocket 25 on the shaft 12. The sprocket 25 and the drive sprocket for the endless assembly R are thus rotated in a counterclockwise direction to overcome the friction and to cause the endless assembly R to rotate counterclockwise for the downward feeding or lowering of the pipe P until the bit on the lower end thereof reaches the bottom of the hole in the well bore W.
It has been found that when the length of the drill pipe or hose P which is suspended by the endless assem'bly R is approximately 600 feet, the weight of the suspended pipe and the parts connected thereto is suflicient to overcome the friction of the endless assembly R and cause a feeding downwardly of the pipe P by gravity. The length of 600 feet is merely by way of example since the point of which the weight becomes sufficient to overcome friction and thereby become self-feeding varies depending upon the weight of the drill collars and other suspended weight on the drill pipe P. Inany event, when the length of the pipe P and'the weights suspended therewith are sufficient to feed same by gravity rather than by the forced feeding through the drive at the engine 46, a braking action is utilized to prevent the apparatus from running away or lowering too fast. For this purpose, the brakes 35 may be applied to some extent; but normally the braking action occurs through a retarding affect in the conventional torque converter 47 attached to the engine 46. Thus, the engine 46 is operated at an idling speed with the clutch 50 engaged and the force exerted on the torque converter 47 causes the converter 47 to be driven and thereby resists the downward pull thereon from the moving flexible pipe P as it is lowered in the well W. Electrical brakes 35 may be applied to some extent to assist the action of the torque converter 47, again depending upon the extent of the weight and the speed of lowering desired.
When the drill bit (not shown) has reached the bottom of the well W, it is difiicult, and often impossible, to control the feed-off of the pipe P so as to correlate it with the speed of drilling with the bit by using the engine 46, the torque converter 47, and the brake 35. Therefore, the present invention includes the control apparatus which has the auxiliary motor connected as previously described to the brake shaft 33 through the clutch 75. Thus, with the drill bit on the bottom of the hole, the clutches 50 and 51 are disengaged and the clutch is engaged. The brakes 35 are partially set, and the motor 60 is operated so as to override or overcome the braking action of the brakes 35. With such operation, the feeding-off of the flexible pipe P is controlled in accordance with the speed of the motor drive provided by the variable speeds set-up illustrated in particular in FIG. 3 and FIG. 4, wherein the speed from the variable speed motor 60 is varied by changing the hydraulic fluid volume to the motor; and if it is desired to change the speed range, this may be accomplished through the adjustment of the variable diameter pulley 62. Of course, other types of variable speed drives may be employed; but in any event, the drive with the motor 60 is such that it overcomes or overrides the braking action 35 enough to feed the pipe P downwardly as thedrilling progresses. The operator of the apparatus at the surface of the well may observe the weight indicator so that he will know when the drill bit is on bottom and drilling properly, and he can adjust the speed of the motor 60 so that the speed is coordinated with the rate of drilling progress in each formation encountered. Thus, when a relatively porous or sandy formation is encountered through which the drill bit may move rapidly, the feed-off with the motor 60 is increased, whereas when hard rock or other difiicult formations are encountered so that the rate of drilling with the bit is slow, the speed of feed-off with the motor 60 is accordingly reduced. The braking action with the brakes 35 is set so that it is just capable of holding the weight of the drill pipe P and the weights suspended therefrom when the motor 60 is disengaged with the clutch 75. In other words, when the clutch 75 is disengaged, the brakes 35 are set.
so that they prevent any downward movement of the drill pipe P until such brakes 35 are released. It is to be noted that the motor 60 can be operated in reverse for limited raising of the pipe P to reduce the load on the drill bit during drilling.
When it is desired to pull the flexible pipe P out of the well W, the clutch 75 is disengaged, the clutch 50 is engaged, then the brakes 35 are released so that the chain 38 is operable to drive the brake shaft 33 for rotating the sprocket 25 clockwise to thereby rotate the endless assembly R and the gripping elements therewith clockwise as viewed in FIG. 1.
The foregoing disclosure and description of the invention is illustrative and explanatory thereof; and various changes in the size, shape, and materials, as well as in the details of the illustrated construction, may be made within the scope of the appended claims without departing from the spirit of the invention.
What is claimed is:
1. In an apparatus for handling flexible pipe having a drill bit and motor suspended therefrom wherein such apparatus includes an endless means for raising and lowering such flexible pipe in a well, the improvement residing in a control assembly for controlling said lowering, which control assembly includes:
(a) a drive shaft operably connected to drive said endless means,
(b) a main drive means operably connected to said drive shaft for the operation of the endless means,
(c) first clutch means for connecting and disconnecting said main drive means from said drive shaft,
(d) an auxiliary drive means adapted to be operably connected to said drive shaft for obtaining a controlled rate of lowering of the flexible pipe when said main drive means has been operably disconnected from said drive shaft, and
(e) second clutch means for connecting and disconnecting said auxiliary drive means with said endless means.
2. The structure set forth in claim 1, including:
(a) brake means connected to said endless means and adapted to exert a braking action on the endless means, and
(b) said auxiliary drive means being operable to override the braking action of the braking means sufficiently to obtain the controlled rate of lowering of the flexible pipe.
3. The structure set forth in claim 1, including:
(a) brake means connected to said endless means and adapted to exert a braking action on the endless means, and
(b) said auxiliary drive means including:
(1) a variable speed fluid actuated motor, and
(2) means for varying the speed of the motor so as to vary the amount of drive by the auxiliary drive means in overriding the brake means.
References Cited by the Examiner UNITED STATES PATENTS 1,939,796 12/1933 SpOwart 226-49 2,249,185 7/1941 Smaltz et al. 226-49 2,892,535 6/1959 Cullen et al. 226l73 EVON C. BLUNK, Primary Examiner.
A. C. HODGSON, Assistant Examiner.
Claims (1)
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US452631A US3317103A (en) | 1965-05-03 | 1965-05-03 | Apparatus for handling hose or similar elongate members |
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Application Number | Priority Date | Filing Date | Title |
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US452631A US3317103A (en) | 1965-05-03 | 1965-05-03 | Apparatus for handling hose or similar elongate members |
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US3317103A true US3317103A (en) | 1967-05-02 |
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US452631A Expired - Lifetime US3317103A (en) | 1965-05-03 | 1965-05-03 | Apparatus for handling hose or similar elongate members |
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