US20060255607A1 - Elevator safety lifting support - Google Patents
Elevator safety lifting support Download PDFInfo
- Publication number
- US20060255607A1 US20060255607A1 US10/908,447 US90844705A US2006255607A1 US 20060255607 A1 US20060255607 A1 US 20060255607A1 US 90844705 A US90844705 A US 90844705A US 2006255607 A1 US2006255607 A1 US 2006255607A1
- Authority
- US
- United States
- Prior art keywords
- elevator
- arm
- lifting support
- safety lifting
- elevator safety
- 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.)
- Abandoned
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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; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/06—Elevators, i.e. rod- or tube-gripping devices
-
- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
Definitions
- Drilling rigs employ elevators to raise drill pipe and other drillstring components out of the well bore or to lower them into the well bore.
- Elevators such as side door elevators, typically have arms or doors connected by a hinged portion that allows them to be opened and closed around the various drilling components. When the elevator arms are in a closed position, they are latched together to engage the drillstring component, such as a pipe, in a load-bearing fashion.
- the component has a shoulder or taper that is greater than the inside diameter of the elevator when it is in a closed position, such that the elevator acts as a clamp when closed by a latch or similar manner of being secured.
- the elevator is opened, the two arms of roughly the same size swing away from each other so that the elevator may be removed from the component.
- An elevator is suspended by elevator ears to bails or links that connect to a hook that is attached, directly or with other intervening components, to a travelling block.
- the typical practice is to let it rest on the rig floor, off to the side and out of the way from the other components being handled by the drilling crew.
- setting the elevator on the floor has some disadvantages.
- the elevator can become frozen to the floor, and it is not uncommon in lifting the elevator from the floor to sustain injuries to the hands or arms, for example by having them get pinched by the elevator or having the elevator smash against the hands of the rig worker.
- lifting the elevator off the floor can be awkward and cumbersome.
- the present invention relates to an elevator safety lifting support for an elevator of a rig comprising a base, a stand emanating perpendicularly from the base and having an outside diameter smaller than an inside diameter of the elevator, and a handle.
- the stand is cylindrical in shape.
- the handle is shaped for attachment to a hook of a winch line.
- FIG. 1 is a side view of an elevator safety lifting support
- FIG. 2 is a top view of the elevator safety lifting support of FIG. 1 ;
- FIG. 3 is a side view of a preferred embodiment of an elevator safety lifting support
- FIG. 4 is a top view of the elevator safety lifting support of FIG. 3 ;
- FIG. 5 is a side view of the arm of the elevator safety lifting support of FIG. 3 ;
- FIG. 6 is a top view of the base of the elevator safety lifting support of FIG. 3 ;
- FIGS. 7A to 7 H show a method for supporting an elevator with an elevator safety lifting support.
- a “drilling rig” refers to any type of rig used in the oil and gas industry, and is not limited only to rigs specifically set up for drilling, but may include workover rigs, rod units specifically designed for running and retrieving rod strings, or other types of rigs that employ elevators.
- a “working height” includes any height off the floor of a rig suitable for performing the required tasks in a manner that is not unduly awkward or uncomfortable, such as a height roughly at waist level for a rig worker.
- an elevator safety lifting support 10 has a base 12 and a stand 14 perpendicular to the base 12 .
- the base 12 may be made of any suitable material, but in a preferred embodiment, the base 12 is made of 3 ⁇ 8′ steel plate cut in a rectangular fashion with dimensions of 12′′ by 15′′.
- the elevator safety lifting support 10 has a handle 16 attached to the stand 14 . It should be understood that the handle 16 can be any size and shape suitable for attaching the hook of a winch line, for example an eye cut directly into the stand 14 .
- the stand 14 is preferably cylindrical having a circular cross-section and having an outside diameter smaller than the inside diameter of an elevator.
- the stand 14 may be, for example, a pipe with an outside diameter of 3.5′′ that is 14′′ long.
- the stand 14 may be welded to the base 12 , or otherwise attached in a suitable fashion.
- the stand 14 and the base 12 may also be formed from a single workpiece, but in a preferred embodiment, and for practical purposes, manufacturing of the support stand 10 is simpler when the base 12 and the stand 14 are separate workpieces attached together.
- the stand 14 may consist of an arm 18 and a sleeve 20 .
- the sleeve 20 may have a cylindrical shape, or some other shape for inserting through an elevator.
- the sleeve preferably has an outside diameter smaller than the inside diameter of an elevator.
- the arm 18 has a top 22 , sides 24 , a bottom 26 , and extensions 28 extending outwardly from the bottom 24 perpendicularly to the sides 22 .
- the arm 18 has a rectangular cross-section 30 , as seen in FIG. 3 .
- the arm 18 has a handle 32 formed by cutting an eye or similar shape out of the plate so that the hook of a winch line can be attached to the elevator safety lifting support 10 .
- the arm 18 may be cut from 1 ⁇ 2′′ steel plate and be 18′′ long from the bottom 26 to the top 22 and the extensions 28 may be 1′′ of the total length.
- the arm 18 may be made of any suitable material.
- the sleeve 20 may have a diameter slightly greater than the distance between the sides 24 of the arm so that the sleeve 20 fits snugly when the sleeve 20 is being fitted over the arm 18 .
- the sleeve 20 has a top 34 , sides 36 , a bottom 38 , and forms a bore 40 . As shown in FIG. 4 , the diameter of the bore 40 is slightly greater than the rectangular cross-section 30 of the arm 18 .
- the sleeve 20 in one embodiment, is a pipe with an outside diameter of 31 ⁇ 2′′ and a length of 14′′. Likewise, the sleeve 20 could be a pipe with any outside diameter that was smaller than the inside diameter of the type of elevator being used.
- the base 12 has a hole 42 that has a shape corresponding to the rectangular cross-section 30 of the arm 18 .
- the arm 18 is inserted through the hole 42 until it is prevented from further insertion by the extensions 28 .
- the arm 18 can then be welded or otherwise attached to the base 12 .
- the arm 18 should have an handle 32 cut into the arm 18 before inserting the arm 18 through the hole 42 .
- the sleeve 20 can be slid down over the arm 18 and then welded or otherwise attached to the base 12 .
- base legs 44 can be attached to the base 12 , preferably by welding.
- the base legs 44 are preferably made of 1′′ or greater square tubing having a length equal to the length of the base 12 .
- FIGS. 7A to 7 H A method of supporting an elevator is shown in FIGS. 7A to 7 H.
- an elevator safety lifting support 10 is provided and rests on the floor of a rig.
- FIG. 7B an elevator 47 is shown removed from conventional components of the rig (not shown). The elevator 47 during this time is still suspended from a conventional travelling block and hook (not shown) by bails 50 A and 50 B which are connected to the elevator 47 by elevator ears 52 A and 52 B.
- the elevator safety lifting support 10 can be picked up and slid up and through the elevator 47 , as seen in FIG. 7C .
- the hook 54 of a winch line 56 is attached to the elevator safety lifting support 10 .
- the weight of the elevator 47 is taken off of the bails 50 A and 50 B by taking the slack out of the winch line 56 .
- the elevator ears 52 A and 52 B are then opened and the elevator 47 is removed from the bails 50 A and 50 B.
- the weight of the elevator 47 is now completely on the elevator safety lifting support 10 which is attached to the hook 54 of the winch line 56 .
- the elevator 47 is then moved off to the side and the elevator safety lifting support 10 is set down on the floor of the rig someplace out of the way. The elevator 47 is then resting on the elevator safety lifting support 10 , and the elevator safety lifting support 10 separates the elevator 47 from the floor 46 of the rig.
- the hook 54 of the winch line 56 is attached to the elevator safety lifting support 10 , and the elevator 47 and the elevator safety lifting support 10 are raised to a working height, a level roughly waist high.
- the elevator ears 52 A and 52 B are opened, and the elevator 47 is set back on the bails 50 A and 50 B.
- the elevator ears 52 A and 52 B are closed and the winch line 56 is given slack until the elevator 47 is once again supported by the bails 50 A and 50 B.
- the hook 54 of the winch line 56 is then removed from the elevator safety lifting support 10 , and the elevator safety lifting support 10 is then set down out of the way until required.
- the elevator safety lifting support 10 of the present invention keeps the elevator 47 separated from the floor 46 throughout the day and eliminates the need to stoop down and retrieve the elevator 47 directly from the floor 46 .
- the simple attachment of the hook 54 of a winch line 56 to the elevator safety lifting support 10 makes hoisting the elevator 47 off the floor 46 a safe, easy task without being awkward or cumbersome.
- the elevator 47 can then be quickly and safely brought to a working height around waist level for attaching to bails 50 A and 50 B. Likewise, removing the elevator 47 from the bails 50 A and 50 B can also be done at a working height around waist level.
- the elevator safety lifting support 10 is lightweight and easy to handle and can be made out of common and durable materials.
Abstract
An elevator safety lifting support comprises a base, a stand emanating perpendicularly from the base and having an outside diameter smaller than the inside diameter of an elevator, and a handle. The stand may be cylindrical in shape. The handle may be shaped for attachment to a hook of a winch line.
Description
- Drilling rigs employ elevators to raise drill pipe and other drillstring components out of the well bore or to lower them into the well bore. Elevators, such as side door elevators, typically have arms or doors connected by a hinged portion that allows them to be opened and closed around the various drilling components. When the elevator arms are in a closed position, they are latched together to engage the drillstring component, such as a pipe, in a load-bearing fashion. The component has a shoulder or taper that is greater than the inside diameter of the elevator when it is in a closed position, such that the elevator acts as a clamp when closed by a latch or similar manner of being secured. When the elevator is opened, the two arms of roughly the same size swing away from each other so that the elevator may be removed from the component. An elevator is suspended by elevator ears to bails or links that connect to a hook that is attached, directly or with other intervening components, to a travelling block.
- When the elevator is removed from a component, the typical practice is to let it rest on the rig floor, off to the side and out of the way from the other components being handled by the drilling crew. However, setting the elevator on the floor has some disadvantages. In cold weather climates, the elevator can become frozen to the floor, and it is not uncommon in lifting the elevator from the floor to sustain injuries to the hands or arms, for example by having them get pinched by the elevator or having the elevator smash against the hands of the rig worker. Also, lifting the elevator off the floor can be awkward and cumbersome.
- The present invention relates to an elevator safety lifting support for an elevator of a rig comprising a base, a stand emanating perpendicularly from the base and having an outside diameter smaller than an inside diameter of the elevator, and a handle.
- In a further aspect of the invention, the stand is cylindrical in shape.
- In a further aspect of the invention, the handle is shaped for attachment to a hook of a winch line.
- These and other aspects of the invention are set out in the claims, which are incorporated here by reference.
- Preferred embodiments of the invention will now be described with reference to the figures, in which like reference characters denote like elements, by way of example, and in which:
-
FIG. 1 is a side view of an elevator safety lifting support; -
FIG. 2 is a top view of the elevator safety lifting support ofFIG. 1 ; -
FIG. 3 is a side view of a preferred embodiment of an elevator safety lifting support; -
FIG. 4 is a top view of the elevator safety lifting support ofFIG. 3 ; -
FIG. 5 is a side view of the arm of the elevator safety lifting support ofFIG. 3 ; -
FIG. 6 is a top view of the base of the elevator safety lifting support ofFIG. 3 ; -
FIGS. 7A to 7H show a method for supporting an elevator with an elevator safety lifting support. - In the claims, the word “comprising” is used in its inclusive sense and does not exclude other elements being present. The indefinite article “a” before a claim feature does not exclude more than one of the feature being present. A “drilling rig” refers to any type of rig used in the oil and gas industry, and is not limited only to rigs specifically set up for drilling, but may include workover rigs, rod units specifically designed for running and retrieving rod strings, or other types of rigs that employ elevators. A “working height” includes any height off the floor of a rig suitable for performing the required tasks in a manner that is not unduly awkward or uncomfortable, such as a height roughly at waist level for a rig worker.
- As shown in
FIG. 1 , an elevatorsafety lifting support 10 has abase 12 and astand 14 perpendicular to thebase 12. Thebase 12 may be made of any suitable material, but in a preferred embodiment, thebase 12 is made of ⅜′ steel plate cut in a rectangular fashion with dimensions of 12″ by 15″. The elevatorsafety lifting support 10 has ahandle 16 attached to thestand 14. It should be understood that thehandle 16 can be any size and shape suitable for attaching the hook of a winch line, for example an eye cut directly into thestand 14. As seen inFIG. 2 , thestand 14 is preferably cylindrical having a circular cross-section and having an outside diameter smaller than the inside diameter of an elevator. - The
stand 14 may be, for example, a pipe with an outside diameter of 3.5″ that is 14″ long. Thestand 14 may be welded to thebase 12, or otherwise attached in a suitable fashion. Thestand 14 and thebase 12 may also be formed from a single workpiece, but in a preferred embodiment, and for practical purposes, manufacturing of thesupport stand 10 is simpler when thebase 12 and thestand 14 are separate workpieces attached together. - As shown in
FIG. 3 , thestand 14 may consist of anarm 18 and asleeve 20. As seen inFIG. 4 , thesleeve 20 may have a cylindrical shape, or some other shape for inserting through an elevator. The sleeve preferably has an outside diameter smaller than the inside diameter of an elevator. - As seen in
FIG. 5 , thearm 18 has atop 22,sides 24, abottom 26, andextensions 28 extending outwardly from thebottom 24 perpendicularly to thesides 22. Thearm 18 has arectangular cross-section 30, as seen inFIG. 3 . Thearm 18 has ahandle 32 formed by cutting an eye or similar shape out of the plate so that the hook of a winch line can be attached to the elevatorsafety lifting support 10. In a preferred embodiment, thearm 18 may be cut from ½″ steel plate and be 18″ long from thebottom 26 to thetop 22 and theextensions 28 may be 1″ of the total length. However, thearm 18 may be made of any suitable material. If thestand 14 has anarm 18 and asleeve 20, thesleeve 20 may have a diameter slightly greater than the distance between thesides 24 of the arm so that thesleeve 20 fits snugly when thesleeve 20 is being fitted over thearm 18. - The
sleeve 20 has atop 34,sides 36, abottom 38, and forms abore 40. As shown inFIG. 4 , the diameter of thebore 40 is slightly greater than therectangular cross-section 30 of thearm 18. Thesleeve 20, in one embodiment, is a pipe with an outside diameter of 3½″ and a length of 14″. Likewise, thesleeve 20 could be a pipe with any outside diameter that was smaller than the inside diameter of the type of elevator being used. - As shown in
FIG. 6 , in a preferred embodiment, thebase 12 has ahole 42 that has a shape corresponding to therectangular cross-section 30 of thearm 18. As shown inFIG. 3 , to assemble the elevatorsafety lifting support 10, thearm 18 is inserted through thehole 42 until it is prevented from further insertion by theextensions 28. Thearm 18 can then be welded or otherwise attached to thebase 12. Thearm 18 should have anhandle 32 cut into thearm 18 before inserting thearm 18 through thehole 42. Once thearm 18 is attached to thebase 12, thesleeve 20 can be slid down over thearm 18 and then welded or otherwise attached to thebase 12. In order to make the elevator safety lifting support 10 more stable,base legs 44 can be attached to thebase 12, preferably by welding. Thebase legs 44 are preferably made of 1″ or greater square tubing having a length equal to the length of thebase 12. Once the elevatorsafety lifting support 10 has been fully assembled, all welds must be x-rayed and M.P.I. (Magnetic Particle Inspection) inspected. - A method of supporting an elevator is shown in
FIGS. 7A to 7H. As shown inFIG. 7A , an elevatorsafety lifting support 10 is provided and rests on the floor of a rig. InFIG. 7B , anelevator 47 is shown removed from conventional components of the rig (not shown). Theelevator 47 during this time is still suspended from a conventional travelling block and hook (not shown) bybails elevator 47 by elevator ears 52A and 52B. Once theelevator 47 is in a position away from the drill string, the elevatorsafety lifting support 10 can be picked up and slid up and through theelevator 47, as seen inFIG. 7C . InFIG. 7D , thehook 54 of awinch line 56 is attached to the elevatorsafety lifting support 10. InFIG. 7E , the weight of theelevator 47 is taken off of thebails winch line 56. InFIG. 7F , the elevator ears 52A and 52B are then opened and theelevator 47 is removed from thebails FIG. 7G , the weight of theelevator 47 is now completely on the elevatorsafety lifting support 10 which is attached to thehook 54 of thewinch line 56. InFIG. 7H , theelevator 47 is then moved off to the side and the elevatorsafety lifting support 10 is set down on the floor of the rig someplace out of the way. Theelevator 47 is then resting on the elevatorsafety lifting support 10, and the elevatorsafety lifting support 10 separates theelevator 47 from thefloor 46 of the rig. - When the
elevator 47 needs to be put back into use, thehook 54 of thewinch line 56 is attached to the elevatorsafety lifting support 10, and theelevator 47 and the elevatorsafety lifting support 10 are raised to a working height, a level roughly waist high. The elevator ears 52A and 52B are opened, and theelevator 47 is set back on thebails winch line 56 is given slack until theelevator 47 is once again supported by thebails hook 54 of thewinch line 56 is then removed from the elevatorsafety lifting support 10, and the elevatorsafety lifting support 10 is then set down out of the way until required. - The elevator
safety lifting support 10 of the present invention keeps theelevator 47 separated from thefloor 46 throughout the day and eliminates the need to stoop down and retrieve theelevator 47 directly from thefloor 46. The simple attachment of thehook 54 of awinch line 56 to the elevatorsafety lifting support 10 makes hoisting theelevator 47 off the floor 46 a safe, easy task without being awkward or cumbersome. Theelevator 47 can then be quickly and safely brought to a working height around waist level for attaching tobails elevator 47 from thebails safety lifting support 10 is lightweight and easy to handle and can be made out of common and durable materials. - Immaterial modifications may be made to the embodiments of the invention described here without departing from the invention.
Claims (11)
1. An elevator safety lifting support for an elevator of a drilling rig comprising:
a base;
a stand emanating perpendicularly from the base and having an outside diameter smaller than an inside diameter of the elevator; and
a handle.
2. The elevator safety lifting support of claim 1 in which the stand is cylindrical in shape.
3. The elevator safety lifting support of claim 1 in which the handle is shaped for attachment to a hook of a winch line.
4. The elevator safety lifting support of claim 1 in which the stand further comprises:
an arm and a sleeve;
the arm having a rectangular shape in a lateral cross-section, a top, sides, and a bottom, the bottom having extensions extending outwardly from the bottom perpendicularly to the sides;
the sleeve having a cylindrical shape, a top, a bottom, and sides and forming a bore, the bore having an inside diameter greater than a distance between the sides of the arm for a snug fit when the sleeve is fitted over the arm; and
the arm and the sleeve being attached to the base.
5. The elevator safety lifting support of claim 4 in which the top of the arm extends beyond the top of the sleeve when the sleeve is fitted over the arm.
6. The elevator safety lifting support of claim 4 in which the handle is a lifting eye cut into the arm.
7. The elevator safety lifting support of claim 4 in which the base comprises a hole having a shape corresponding to the rectangular shape of the arm.
8. The elevator safety lifting support of claim 7 in which the arm is inserted through the hole of the base until the extensions of the arm prevent the arm from being inserted any further and the sleeve is fitted over the arm after the arm has been inserted through the hole of the base.
9. The elevator safety lifting support of claim 1 used for supporting an elevator off a floor of a drilling rig.
10. The elevator safety lifting support of claim 1 used for lifting an elevator off a floor of a drilling rig.
11. The elevator safety lifting support of claim 1 used for lowering an elevator to a floor of a drilling rig.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/908,447 US20060255607A1 (en) | 2005-05-12 | 2005-05-12 | Elevator safety lifting support |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US10/908,447 US20060255607A1 (en) | 2005-05-12 | 2005-05-12 | Elevator safety lifting support |
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US20060255607A1 true US20060255607A1 (en) | 2006-11-16 |
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ID=37418428
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US10/908,447 Abandoned US20060255607A1 (en) | 2005-05-12 | 2005-05-12 | Elevator safety lifting support |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1510564A (en) * | 1924-04-21 | 1924-10-07 | Clark Tructractor Co | Means for handling rolls of paper |
US2944759A (en) * | 1957-08-22 | 1960-07-12 | Triangle Conduit & Cable Co In | Wire stand |
US3301451A (en) * | 1964-12-14 | 1967-01-31 | Gordon H Halverson | Phonograph record carrier |
US3442546A (en) * | 1966-12-12 | 1969-05-06 | William Bachman | Strip roll positioning mechanism |
US4421447A (en) * | 1981-03-09 | 1983-12-20 | Zena Equipment, Inc. | Elevator transfer and support system |
US4450606A (en) * | 1982-04-15 | 1984-05-29 | Broussard Baron T | Slip elevator |
US5306062A (en) * | 1993-04-21 | 1994-04-26 | Dodge John P | Adjustable lifting device for sewer frame or the like |
US6237684B1 (en) * | 1999-06-11 | 2001-05-29 | Frank's Casing Crewand Rental Tools, Inc. | Pipe string handling apparatus and method |
US6386283B1 (en) * | 2001-04-25 | 2002-05-14 | Frank's Casing Crew And Rental Tools, Inc. | Elevator and spider converter |
-
2005
- 2005-05-12 US US10/908,447 patent/US20060255607A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1510564A (en) * | 1924-04-21 | 1924-10-07 | Clark Tructractor Co | Means for handling rolls of paper |
US2944759A (en) * | 1957-08-22 | 1960-07-12 | Triangle Conduit & Cable Co In | Wire stand |
US3301451A (en) * | 1964-12-14 | 1967-01-31 | Gordon H Halverson | Phonograph record carrier |
US3442546A (en) * | 1966-12-12 | 1969-05-06 | William Bachman | Strip roll positioning mechanism |
US4421447A (en) * | 1981-03-09 | 1983-12-20 | Zena Equipment, Inc. | Elevator transfer and support system |
US4450606A (en) * | 1982-04-15 | 1984-05-29 | Broussard Baron T | Slip elevator |
US5306062A (en) * | 1993-04-21 | 1994-04-26 | Dodge John P | Adjustable lifting device for sewer frame or the like |
US6237684B1 (en) * | 1999-06-11 | 2001-05-29 | Frank's Casing Crewand Rental Tools, Inc. | Pipe string handling apparatus and method |
US6386283B1 (en) * | 2001-04-25 | 2002-05-14 | Frank's Casing Crew And Rental Tools, Inc. | Elevator and spider converter |
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