CA2163322C - Method and apparatus for isolating a rotary bushing from a drilling rig floor - Google Patents
Method and apparatus for isolating a rotary bushing from a drilling rig floor Download PDFInfo
- Publication number
- CA2163322C CA2163322C CA002163322A CA2163322A CA2163322C CA 2163322 C CA2163322 C CA 2163322C CA 002163322 A CA002163322 A CA 002163322A CA 2163322 A CA2163322 A CA 2163322A CA 2163322 C CA2163322 C CA 2163322C
- Authority
- CA
- Canada
- Prior art keywords
- collar
- rotary bushing
- drilling rig
- rig floor
- sidewall
- 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.)
- Expired - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 19
- 230000000284 resting effect Effects 0.000 claims 3
- 238000011109 contamination Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B15/00—Supports for the drilling machine, e.g. derricks or masts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
A method and apparatus for isolating a rotary bushing from a drilling rig floor includes a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity. The collar is secured in position on a drilling rig floor encircling the rotary bushing. Objects are prevented from entering the path of the rotary bushing by the collar. Fluids splashing off the rotary bushing are substantially confined by the interior sidewall within the interior cavity of the collar.
Description
TITLE OF THE INVENTION:
Method and apparatus for isolating a rotary bushing from a drilling rig floor NAME OF INVENTOR:
Quinn Holtby FIELD OF THE INVENTION
The present invention relates to a method and apparatus for isolating a rotary bushing from a drilling rig floor.
BACKGROUND OF THE INVENTION
The floor of a drilling rig has an opening in which is positioned a rotary bushing. The rotary bushing is used to rotate sections of pipe which form a drill string. The sections of pipe are held in the rotary bushing by a plurality of wedge-like members referred to as "slips". Each slip has an outwardly projecting handle.
The rotary bushing presents a number of dangers. The rotary bushing rotates at speeds which approach 80 rotations per minute. Rig workers have been injured and, in some cases killed, when struck by the handles of the slips as the rotary bushing rotates or when hoses they were handling caught on the handles of the slips. Another danger relates to spillage of fluids. Every time a threaded connection is disconnected to permit the separation of a section of pipe, fluids contained within the section of pipe are released. Fluids strike the rotary bushing and splash onto the adjacent drilling rig floor.
As drilling progresses, the drilling rig floor invariably becomes contaminated with drilling fluid. The fluid contamination makes the drilling rig floor very slippery and, as such, presents a safety hazard for workers. The safety hazard is addressed by placing matts, commonly known as "chimo matts", on the drilling rig floor around the rotary bushing.
The chimo matts provide a non-slip surface, which has openings to receive fluid. The chimo matts reduce, but can not eliminate the slippage problem due primarily to the sheer volume of drilling fluid which is splashed on the drilling rig floor. The chimo matts would be a more effective solution if the volume of fluid contamination of the drilling rig floor could be reduced.
SiJI~ARY OF THE INVENTION
What is required is a method and apparatus for isolating a rotary bushing from a drilling rig floor.
According to one aspect of the present invention there is provided an apparatus for isolating a rotary bushing from a drilling rig floor which includes a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity. Means is provided for securing the collar in position on a drilling rig floor.
With the apparatus, as described above, the collar serves to confine within the interior cavity any fluids that splash onto the rotary bushing. It also prevents a persons foot or a length of hose from passing into the path of the handles of the slips as the rotary bushing rotates. The preferred means for securing the collar in position includes a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar. With this construction a non-slip matt may be positioned so it rests upon the planar flange to secure the collar in the desired position on the drilling rig floor. The planar flange is easier to place in ~1~3322 position under the non-slip matt when it is divided into a plurality of segments. Fluid containment is improved when the exterior sidewall of the collar is angled inwardly into the interior cavity from the bottom toward the top.
According to another aspect of the present invention there is provided a method for isolating a rotary bushing from a drilling rig floor. Firstly, provide a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity. Secondly, secure the collar on the drilling rig floor encircling a rotary bushing. The exterior sidewalls prevent feet, hoses and other objects from entering into the path of the rotary bushing. Fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar.
When a non-slip matt covers the drilling rig floor, the preferred method includes having a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar. The non-slip matt rests upon the planar flange to secure the collar in position on the drilling rig floor.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a side elevation view, in section, of an apparatus constructed in accordance with the teachings of the present invention positioned on a drilling rig floor.
FIGURE 2 is a top plan view of the apparatus illustrated in FIGURE 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Method and apparatus for isolating a rotary bushing from a drilling rig floor NAME OF INVENTOR:
Quinn Holtby FIELD OF THE INVENTION
The present invention relates to a method and apparatus for isolating a rotary bushing from a drilling rig floor.
BACKGROUND OF THE INVENTION
The floor of a drilling rig has an opening in which is positioned a rotary bushing. The rotary bushing is used to rotate sections of pipe which form a drill string. The sections of pipe are held in the rotary bushing by a plurality of wedge-like members referred to as "slips". Each slip has an outwardly projecting handle.
The rotary bushing presents a number of dangers. The rotary bushing rotates at speeds which approach 80 rotations per minute. Rig workers have been injured and, in some cases killed, when struck by the handles of the slips as the rotary bushing rotates or when hoses they were handling caught on the handles of the slips. Another danger relates to spillage of fluids. Every time a threaded connection is disconnected to permit the separation of a section of pipe, fluids contained within the section of pipe are released. Fluids strike the rotary bushing and splash onto the adjacent drilling rig floor.
As drilling progresses, the drilling rig floor invariably becomes contaminated with drilling fluid. The fluid contamination makes the drilling rig floor very slippery and, as such, presents a safety hazard for workers. The safety hazard is addressed by placing matts, commonly known as "chimo matts", on the drilling rig floor around the rotary bushing.
The chimo matts provide a non-slip surface, which has openings to receive fluid. The chimo matts reduce, but can not eliminate the slippage problem due primarily to the sheer volume of drilling fluid which is splashed on the drilling rig floor. The chimo matts would be a more effective solution if the volume of fluid contamination of the drilling rig floor could be reduced.
SiJI~ARY OF THE INVENTION
What is required is a method and apparatus for isolating a rotary bushing from a drilling rig floor.
According to one aspect of the present invention there is provided an apparatus for isolating a rotary bushing from a drilling rig floor which includes a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity. Means is provided for securing the collar in position on a drilling rig floor.
With the apparatus, as described above, the collar serves to confine within the interior cavity any fluids that splash onto the rotary bushing. It also prevents a persons foot or a length of hose from passing into the path of the handles of the slips as the rotary bushing rotates. The preferred means for securing the collar in position includes a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar. With this construction a non-slip matt may be positioned so it rests upon the planar flange to secure the collar in the desired position on the drilling rig floor. The planar flange is easier to place in ~1~3322 position under the non-slip matt when it is divided into a plurality of segments. Fluid containment is improved when the exterior sidewall of the collar is angled inwardly into the interior cavity from the bottom toward the top.
According to another aspect of the present invention there is provided a method for isolating a rotary bushing from a drilling rig floor. Firstly, provide a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity. Secondly, secure the collar on the drilling rig floor encircling a rotary bushing. The exterior sidewalls prevent feet, hoses and other objects from entering into the path of the rotary bushing. Fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar.
When a non-slip matt covers the drilling rig floor, the preferred method includes having a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar. The non-slip matt rests upon the planar flange to secure the collar in position on the drilling rig floor.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, wherein:
FIGURE 1 is a side elevation view, in section, of an apparatus constructed in accordance with the teachings of the present invention positioned on a drilling rig floor.
FIGURE 2 is a top plan view of the apparatus illustrated in FIGURE 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, an apparatus for isolating a rotary bushing from a drilling rig floor generally identified by reference numeral 10, will now be described with reference to FIGURES 1 and 2.
Referring to FIGURE 1, apparatus 10 includes a collar 12 having a top 14, a bottom 16, an exterior sidewall 18 and an interior sidewall 20 defining an interior cavity 22. Exterior sidewall 18 of collar 12 is angled inwardly into interior cavity 22 from bottom 16 toward top 14. Referring to FIGURE
2, a planar flange 24 projects outwardly from exterior sidewall 18 immediately adjacent to bottom 16 of collar 12. Planar flange 24 is divided into a plurality of tab-like segments 26.
For ease of transport and installation collar 12 is constructed of two arcuate segments 28 and 30, which are secured together by fasteners 32. It is preferred that an annular foam seal 33 be positioned within interior cavity 22 where interior sidewall meets bottom 16, so as to prevent fluids from leaking under collar 12 and onto the drilling rig floor.
The method of use of apparatus 10 will now be described with reference to FIGURES 1 and 2. Referring to FIGURE l, the method is intended to isolate a rotary bushing 38 from a drilling rig floor 34 to guard against injury and reduce fluid contamination of drilling rig floor 34 by fluids 36. Collar 12 is positioned on drilling rig floor 34 encircling a rotary bushing 38. It is standard practice for drilling rig floor 34 to be covered by a non-slip matt 40 which surrounds rotary bushing 38. Collar 12 is secured in position by placing a peripheral edge 42 of non-slip matt 40 onto planar flange 24.
By having planar flange 24 divided into a plurality of tab-like segments, it is easier to tuck planar flange 24 under peripheral edge 42 of non-slip matt 40. When in position fluids 36 which splash onto rotary bushing 38 are substantially confined by interior sidewall 18 within interior cavity 22 of collar 12. The angling of interior sidewall 18 has been found to provide more effective containment.
~~633~2 Collar 12 is light weight and can be installed by one worker in less than a minute. It serves to isolate the rotary bushing without restricting access for the purpose of servicing and the like.
Referring to FIGURE 1, apparatus 10 includes a collar 12 having a top 14, a bottom 16, an exterior sidewall 18 and an interior sidewall 20 defining an interior cavity 22. Exterior sidewall 18 of collar 12 is angled inwardly into interior cavity 22 from bottom 16 toward top 14. Referring to FIGURE
2, a planar flange 24 projects outwardly from exterior sidewall 18 immediately adjacent to bottom 16 of collar 12. Planar flange 24 is divided into a plurality of tab-like segments 26.
For ease of transport and installation collar 12 is constructed of two arcuate segments 28 and 30, which are secured together by fasteners 32. It is preferred that an annular foam seal 33 be positioned within interior cavity 22 where interior sidewall meets bottom 16, so as to prevent fluids from leaking under collar 12 and onto the drilling rig floor.
The method of use of apparatus 10 will now be described with reference to FIGURES 1 and 2. Referring to FIGURE l, the method is intended to isolate a rotary bushing 38 from a drilling rig floor 34 to guard against injury and reduce fluid contamination of drilling rig floor 34 by fluids 36. Collar 12 is positioned on drilling rig floor 34 encircling a rotary bushing 38. It is standard practice for drilling rig floor 34 to be covered by a non-slip matt 40 which surrounds rotary bushing 38. Collar 12 is secured in position by placing a peripheral edge 42 of non-slip matt 40 onto planar flange 24.
By having planar flange 24 divided into a plurality of tab-like segments, it is easier to tuck planar flange 24 under peripheral edge 42 of non-slip matt 40. When in position fluids 36 which splash onto rotary bushing 38 are substantially confined by interior sidewall 18 within interior cavity 22 of collar 12. The angling of interior sidewall 18 has been found to provide more effective containment.
~~633~2 Collar 12 is light weight and can be installed by one worker in less than a minute. It serves to isolate the rotary bushing without restricting access for the purpose of servicing and the like.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (7)
1. ~An apparatus for isolating a rotary bushing from a drilling rig floor, comprising:
a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity;
the collar being adapted to surround a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar; and means for securing the collar in position an a drilling rig floor.
a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity;
the collar being adapted to surround a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar; and means for securing the collar in position an a drilling rig floor.
2. ~The apparatus as defined in Claim 1, wherein the collar securing means is a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar, such that a non-slip matt resting upon the planar flange secures the collar in position.
3. ~The apparatus as defined in Claim 2, wherein the planar flange is divided into a plurality of segments,
4. ~The apparatus as defined in Claim 1, wherein the interior sidewall of the collar is angled inwardly into the interior cavity from the bottom toward the top.
5. ~An apparatus for isolating a rotary bushing from a drilling rig floor, comprising:
a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity, the interior sidewall of the collar being angled inwardly into the interior cavity from the bottom toward the top;
the collar being adapted to surround a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar; and a planar flange divided in to a plurality of segments projects outwardly from the exterior sidewall immediately adjacent to the bottom of the collar, such that a non-slip matt resting upon the planar flange secures the collar in position.
a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity, the interior sidewall of the collar being angled inwardly into the interior cavity from the bottom toward the top;
the collar being adapted to surround a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar; and a planar flange divided in to a plurality of segments projects outwardly from the exterior sidewall immediately adjacent to the bottom of the collar, such that a non-slip matt resting upon the planar flange secures the collar in position.
6. ~A method for isolating a rotary bushing from a drilling rig floor, comprising the steps of:
firstly, providing a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity; and secondly, securing the collar on the drilling rig floor encircling a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar.
firstly, providing a collar having a top, a bottom, an exterior sidewall and an interior sidewall defining an interior cavity; and secondly, securing the collar on the drilling rig floor encircling a rotary bushing, such that objects are prevented from entering the path of the rotary bushing by the exterior sidewall of the collar and fluid splashing off the rotary bushing is substantially confined by the interior sidewall within the interior cavity of the collar.
7. ~The method as defined in Claim 6, having a non-slip matt covering the drilling rig floor, the collar having a planar flange projecting outwardly from the exterior sidewall immediately adjacent to the bottom of the collar, such that the non-slip matt resting upon the planar flange secures the collar in position on the drilling rig floor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002163322A CA2163322C (en) | 1995-11-20 | 1995-11-20 | Method and apparatus for isolating a rotary bushing from a drilling rig floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002163322A CA2163322C (en) | 1995-11-20 | 1995-11-20 | Method and apparatus for isolating a rotary bushing from a drilling rig floor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2163322A1 CA2163322A1 (en) | 1997-05-21 |
| CA2163322C true CA2163322C (en) | 2006-01-17 |
Family
ID=4157000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002163322A Expired - Lifetime CA2163322C (en) | 1995-11-20 | 1995-11-20 | Method and apparatus for isolating a rotary bushing from a drilling rig floor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2163322C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9689217B2 (en) | 2009-08-20 | 2017-06-27 | Katch Kan Holdings Ltd. | Apparatus and method for containing fluid or gas released from a pipe |
| CA2970984C (en) | 2014-12-18 | 2021-02-09 | Katch Kan Holdings Ltd. | Well fluid containment device with safety mechanism |
-
1995
- 1995-11-20 CA CA002163322A patent/CA2163322C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2163322A1 (en) | 1997-05-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDC | Correction of dead application (reinstatement) | ||
| MKEX | Expiry |
Effective date: 20151120 |