US1638494A - Casing puller and cutter - Google Patents
Casing puller and cutter Download PDFInfo
- Publication number
- US1638494A US1638494A US8488A US848825A US1638494A US 1638494 A US1638494 A US 1638494A US 8488 A US8488 A US 8488A US 848825 A US848825 A US 848825A US 1638494 A US1638494 A US 1638494A
- Authority
- US
- United States
- Prior art keywords
- casing
- piston
- cutter
- head
- puller
- 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
- ZEFNOZRLAWVAQF-UHFFFAOYSA-N Dinitolmide Chemical compound CC1=C(C(N)=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O ZEFNOZRLAWVAQF-UHFFFAOYSA-N 0.000 description 1
- HILUWRPVFKJTAD-ZGHMGGRHSA-N GA21 Chemical compound O=C(O)[C@H]1[C@@H]2[C@]3(C(=O)O)C(=O)O[C@@]2([C@H]2[C@]41CC(=C)[C@@](O)(C4)CC2)CCC3 HILUWRPVFKJTAD-ZGHMGGRHSA-N 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
Images
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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
-
- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/04—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion
- E21B23/042—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells operated by fluid means, e.g. actuated by explosion using a single piston or multiple mechanically interconnected pistons
-
- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
-
- 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
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
Definitions
- This invention relates to an improved device which may be conveniently entitled a casing puller and cutter, the same being adapted to salvage a complete or a section of a casing and remove it from a well or hole when the same has become stuck therein.
- the principal object is, of course, to gen erally improve upon devices of this class by providing one embodying a novel structural arrangement of parts so associated as to operate efficiently even under unfavorable conditions when the casing is covered with oil and would be otherwise very difficult to remove.
- Figure 1 is a complete view of the device showing the parts fully assembled, portions being in elevation and other portions being in section.
- Figure 2 is a View, partly in section and partly in elevation, of the upper portion of a device constructed in accordance with the present invention.
- Fig. 3 is a similar View of the remainder of the device showing both the pulling and cutting means in particular.
- Fig. 4 is a transverse section taken approximately on the plane of the line H of Fig. 3 and Fig. 5 is a section taken approximately on the line 55 of Fig. 3.
- the reference 1 designates a centrally bored head fashioned to permit it to be connected to appropriate raising and lowering means. At its bottom it is equipped with a screw threaded flange 2 into which the screw threaded upper end of a tube 3 is tapped. The tube is also internally screw threaded at its lower end and in practice it functions as a cylinder. Screwed into the lower end of the tube is a special, body 4 having a central longitudinal passage enlarged as at 5. On its lower end the body is constructed to provide a point 6' and on one side it is provided with a pocket for removable reception of a toothed block 7 commonly known as a slip. At a diametrically opposite point the body is formed 11, 1925. Serial No. 8,488.
- the piston may be equipped with a packing ring 11.
- a connecting link or rod 14 is provided, the same having its upper end sliding in the piston.
- the lower end of the link extends downwardly an'd slidably through a hole 16 formed in-the body 4 and into a socket 17 in the. upper end of the slip, 9, the same being pivotally connected to a cross pin 18 arranged in this socket.
- the aforesaid tube 12 is rovided on its lower end with a conical hea the enlarged portion 5 of the bore of the body.
- This head may be referred to as a spreader.
- transverse slots 20 which intersect each other and pass through the bore as indicated more particularly in Figs. 1* and 4.
- Pivoted in each slot is a lug 21 pressed inwardly under the action of a removable flat spring 22 anchored in any appropriate manner, for instance, as shown in Fig. 1*.
- Each lug is provided adjacent its upper free end with a V-shaped rib 23, the apex of which is sharpened to provide a cutting edge.
- the adjacent faces of the lugs are beveled as shown to provide a substantially conical recess 24 into the head 19 is adapted to be passed for spreading all of the lugs outwardly to bring the cutting edges 23 into engagement with a surrounding casing (not shown).
- the operation of the device is as follows. Air or other fluid under pressure is introduced into the cylinder to act on the piston head to force the same downwardly against 19 slidable in.
- the conical head 19 which acts as a spreader, enters the conical socket 24 and serves to spread the lugs, rather to swing them outwardly to bring the cutting edges into contact with the casing so that by rotating the tool, the casing can be cut at this point to salvage the greatest portion possible.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Marine Sciences & Fisheries (AREA)
- Earth Drilling (AREA)
Description
Aug. 9, 1927.
R. c. LEWIS ,ET
CASING FULLER AND CUTTER Filed Feb. 11. 1925 gwueqtow law as,
CG I l Patented Aug. 9, 1927. I UNITED STATES PATENT OFFICE- RUSH CI LEWIS AND FRANK S. HARRIS, 0F ABILENE, TEXAS.
CASING PULLER AND CUTTER.
Application filed February This invention relates to an improved device which may be conveniently entitled a casing puller and cutter, the same being adapted to salvage a complete or a section of a casing and remove it from a well or hole when the same has become stuck therein.
The principal object is, of course, to gen erally improve upon devices of this class by providing one embodying a novel structural arrangement of parts so associated as to operate efficiently even under unfavorable conditions when the casing is covered with oil and would be otherwise very difficult to remove.
The structural features and advantages derived from their use will become apparent from the following description and drawing.
In the accompanying drawing forming a part of this specification and in which like numerals are employed to designate like parts throughout the same:
Figure 1 is a complete view of the device showing the parts fully assembled, portions being in elevation and other portions being in section.
Figure 2 is a View, partly in section and partly in elevation, of the upper portion of a device constructed in accordance with the present invention.
Fig. 3 is a similar View of the remainder of the device showing both the pulling and cutting means in particular.
Fig. 4 is a transverse section taken approximately on the plane of the line H of Fig. 3 and Fig. 5 is a section taken approximately on the line 55 of Fig. 3.
4 Referring to the drawings in detail and considering more particularly the puller, it will be seen that the reference 1 designates a centrally bored head fashioned to permit it to be connected to appropriate raising and lowering means. At its bottom it is equipped with a screw threaded flange 2 into which the screw threaded upper end of a tube 3 is tapped. The tube is also internally screw threaded at its lower end and in practice it functions as a cylinder. Screwed into the lower end of the tube is a special, body 4 having a central longitudinal passage enlarged as at 5. On its lower end the body is constructed to provide a point 6' and on one side it is provided with a pocket for removable reception of a toothed block 7 commonly known as a slip. At a diametrically opposite point the body is formed 11, 1925. Serial No. 8,488.
with a tapered groove 8 in which a toothed reciprocation in the aforesaid tube 3. If.
desired, the piston may be equipped with a packing ring 11.
Connected to the center of the piston and depending therefrom is a hollow tubular stem 12 extending slidably down into the aforesaid passage 5 and surrounding this stem and interposed between the piston and "the body 4 is a coiled spring13 for moving the piston upwardly. In order to control the slip, a connecting link or rod 14 is provided, the same having its upper end sliding in the piston. The lower end of the link extends downwardly an'd slidably through a hole 16 formed in-the body 4 and into a socket 17 in the. upper end of the slip, 9, the same being pivotally connected to a cross pin 18 arranged in this socket.
Giving more particular attention to the specially constructed body 1, it will be seen that the aforesaid tube 12 is rovided on its lower end with a conical hea the enlarged portion 5 of the bore of the body. This head may be referred to as a spreader. Just below the normal position of the head are transverse slots 20 which intersect each other and pass through the bore as indicated more particularly in Figs. 1* and 4. Pivoted in each slot is a lug 21 pressed inwardly under the action of a removable flat spring 22 anchored in any appropriate manner, for instance, as shown in Fig. 1*. Each lug is provided adjacent its upper free end with a V-shaped rib 23, the apex of which is sharpened to provide a cutting edge.
The adjacent faces of the lugs are beveled as shown to provide a substantially conical recess 24 into the head 19 is adapted to be passed for spreading all of the lugs outwardly to bring the cutting edges 23 into engagement with a surrounding casing (not shown).
The operation of the device is as follows. Air or other fluid under pressure is introduced into the cylinder to act on the piston head to force the same downwardly against 19 slidable in.
the tension of the spring. As the piston head moves downwardly the link 14 which is slidable through an opening therein follows. the same'owing to its own weight and the weight of the sliding slip 9. Obviously, a
as the slip moves downwardly upon the beveled surface of the groove 8, it is forced outwardly and into engagement with the wall of the casing. Consequently, when the tool is lifted, the casing will be lifted with it.
It is also clear that by forcing the piston still further downwardly into the cylinder, the conical head 19, which acts as a spreader, enters the conical socket 24 and serves to spread the lugs, rather to swing them outwardly to bring the cutting edges into contact with the casing so that by rotating the tool, the casing can be cut at this point to salvage the greatest portion possible.
It is thought that the foregoing description will be suflicient, when taken in connection with the accompanying drawing, to enable persons skilled in the art to which the invention relates to obtain a thorough understanding of the same. For this reason a more lengthy description is thought unnecessary. I
While we have shown and described the preferred embodiment of the invention, it is to be understood that minor changes coming within the field of invention claimed may be resorted to if desired.
Having thus described our invention, what We claim as newis-:- In a casing puller of the class described, a head, a body, a cylinder interposed between and connected at its ends with said head and body respectively, said head and said body being provided with alined longitudinally disposed bores, a piston slidable in said cylinder, a stern connected with said piston and slidable' in the bore in said body, a spring surrounding said stem and interposed between the body and piston, said body being provided on one side and adjacent its point of connection to the cylinder in a tapered groove and on its diametrically opposite side is a pocket, a: toothed slip slidable in said tapered groove, a toothed block secured RUSH e; LEWIS. FRANK s. HARRIS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8488A US1638494A (en) | 1925-02-11 | 1925-02-11 | Casing puller and cutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8488A US1638494A (en) | 1925-02-11 | 1925-02-11 | Casing puller and cutter |
Publications (1)
Publication Number | Publication Date |
---|---|
US1638494A true US1638494A (en) | 1927-08-09 |
Family
ID=21731882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US8488A Expired - Lifetime US1638494A (en) | 1925-02-11 | 1925-02-11 | Casing puller and cutter |
Country Status (1)
Country | Link |
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US (1) | US1638494A (en) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2515377A (en) * | 1945-02-05 | 1950-07-18 | Otis Pressure Control Inc | Cutting device |
US2572997A (en) * | 1940-05-13 | 1951-10-30 | Edwards Frances Robertha | Pipe cutter |
US3920070A (en) * | 1974-11-06 | 1975-11-18 | Mack Goins | Pipe cutter |
US4505302A (en) * | 1980-12-02 | 1985-03-19 | British Gas Corporation | Replacement of mains |
US4944081A (en) * | 1989-06-15 | 1990-07-31 | Mobil Oil Corporation | Packing removal tool |
US5127145A (en) * | 1989-06-15 | 1992-07-07 | Mobil Oil Corporation | Process for removing packing |
US5242201A (en) * | 1991-08-26 | 1993-09-07 | Beeman Robert S | Fishing tool |
US5544977A (en) * | 1994-06-24 | 1996-08-13 | Lone Star Gas Company | Polymeric pipe splitter, replacement tool and method |
US5551512A (en) * | 1995-01-23 | 1996-09-03 | Baker Hughes Incorporated | Running tool |
US5580114A (en) * | 1994-11-25 | 1996-12-03 | Baker Hughes Incorporated | Hydraulically actuated fishing tool |
US5605366A (en) * | 1994-11-23 | 1997-02-25 | Weatherford/Lamb, Inc. | External pulling tool and method of operation |
US5639135A (en) * | 1994-11-23 | 1997-06-17 | Enterra Oil Field Rental | Fishing tool and method of operation |
US5791712A (en) * | 1996-07-03 | 1998-08-11 | Weatherford/Lamb, Inc. | Spear fishing tool |
US5881816A (en) * | 1997-04-11 | 1999-03-16 | Weatherford/Lamb, Inc. | Packer mill |
US6095583A (en) * | 1996-07-03 | 2000-08-01 | Weatherford/Lamb, Inc. | Wellbore fishing tools |
US6116339A (en) * | 1996-10-08 | 2000-09-12 | Baker Hughes Incorporated | Running and setting tool for packers |
US6305880B1 (en) | 1997-01-09 | 2001-10-23 | Wrb Company, Inc. | Device and method for trenchless replacement of underground pipe |
US20030044237A1 (en) * | 1997-01-09 | 2003-03-06 | Carter Robert Williams | Trenchless water pipe replacement device and method |
US20120285684A1 (en) * | 2011-05-13 | 2012-11-15 | Baker Hughes Incorporated | Multi-position Mechanical Spear for Multiple Tension Cuts while Removing Cuttings |
US20120292027A1 (en) * | 2011-05-16 | 2012-11-22 | Baker Hughes Incorporated | Tubular Cutting with Debris Filtration |
US20120292028A1 (en) * | 2011-05-16 | 2012-11-22 | Baker Hughes Incorporated | Tubular Cutting with a Sealed Annular Space and Fluid Flow for Cuttings Removal |
US20130048268A1 (en) * | 2011-08-31 | 2013-02-28 | Baker Hughes Incorporated | Multi-position Mechanical Spear for Multiple Tension Cuts with Releasable Locking Feature |
US8540458B2 (en) | 2011-06-14 | 2013-09-24 | Roodle, Inc. | Center hole ram cable puller |
US20140119835A1 (en) * | 2012-10-25 | 2014-05-01 | Southeast Directional Drilling, Llc | Casing Puller |
US11448028B2 (en) | 2020-08-06 | 2022-09-20 | Saudi Arabian Oil Company | Milling packers below restrictions in a wellbore casing |
US11448026B1 (en) | 2021-05-03 | 2022-09-20 | Saudi Arabian Oil Company | Cable head for a wireline tool |
US11549329B2 (en) | 2020-12-22 | 2023-01-10 | Saudi Arabian Oil Company | Downhole casing-casing annulus sealant injection |
US11598178B2 (en) | 2021-01-08 | 2023-03-07 | Saudi Arabian Oil Company | Wellbore mud pit safety system |
US11655685B2 (en) | 2020-08-10 | 2023-05-23 | Saudi Arabian Oil Company | Downhole welding tools and related methods |
US11828128B2 (en) | 2021-01-04 | 2023-11-28 | Saudi Arabian Oil Company | Convertible bell nipple for wellbore operations |
US11859815B2 (en) | 2021-05-18 | 2024-01-02 | Saudi Arabian Oil Company | Flare control at well sites |
US11905791B2 (en) | 2021-08-18 | 2024-02-20 | Saudi Arabian Oil Company | Float valve for drilling and workover operations |
US11913298B2 (en) | 2021-10-25 | 2024-02-27 | Saudi Arabian Oil Company | Downhole milling system |
-
1925
- 1925-02-11 US US8488A patent/US1638494A/en not_active Expired - Lifetime
Cited By (48)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2572997A (en) * | 1940-05-13 | 1951-10-30 | Edwards Frances Robertha | Pipe cutter |
US2515377A (en) * | 1945-02-05 | 1950-07-18 | Otis Pressure Control Inc | Cutting device |
US3920070A (en) * | 1974-11-06 | 1975-11-18 | Mack Goins | Pipe cutter |
US4505302A (en) * | 1980-12-02 | 1985-03-19 | British Gas Corporation | Replacement of mains |
US4944081A (en) * | 1989-06-15 | 1990-07-31 | Mobil Oil Corporation | Packing removal tool |
US5127145A (en) * | 1989-06-15 | 1992-07-07 | Mobil Oil Corporation | Process for removing packing |
US5242201A (en) * | 1991-08-26 | 1993-09-07 | Beeman Robert S | Fishing tool |
US5544977A (en) * | 1994-06-24 | 1996-08-13 | Lone Star Gas Company | Polymeric pipe splitter, replacement tool and method |
US5605366A (en) * | 1994-11-23 | 1997-02-25 | Weatherford/Lamb, Inc. | External pulling tool and method of operation |
US5639135A (en) * | 1994-11-23 | 1997-06-17 | Enterra Oil Field Rental | Fishing tool and method of operation |
US5580114A (en) * | 1994-11-25 | 1996-12-03 | Baker Hughes Incorporated | Hydraulically actuated fishing tool |
US5794694A (en) * | 1995-01-23 | 1998-08-18 | Baker Hughes Incorporated | Running tool |
US5551512A (en) * | 1995-01-23 | 1996-09-03 | Baker Hughes Incorporated | Running tool |
US6095583A (en) * | 1996-07-03 | 2000-08-01 | Weatherford/Lamb, Inc. | Wellbore fishing tools |
US5791712A (en) * | 1996-07-03 | 1998-08-11 | Weatherford/Lamb, Inc. | Spear fishing tool |
US6116339A (en) * | 1996-10-08 | 2000-09-12 | Baker Hughes Incorporated | Running and setting tool for packers |
US6305880B1 (en) | 1997-01-09 | 2001-10-23 | Wrb Company, Inc. | Device and method for trenchless replacement of underground pipe |
US6524031B2 (en) | 1997-01-09 | 2003-02-25 | Wrb Company, Inc. | Device and method for trenchless replacement of underground pipe |
US20030044237A1 (en) * | 1997-01-09 | 2003-03-06 | Carter Robert Williams | Trenchless water pipe replacement device and method |
US6793442B2 (en) | 1997-01-09 | 2004-09-21 | Tric Tools, Inc. | Device and method for trenchless replacement of underground pipe |
US6799923B2 (en) * | 1997-01-09 | 2004-10-05 | Tric Tools, Inc. | Trenchless water pipe replacement device and method |
US20050042036A1 (en) * | 1997-01-09 | 2005-02-24 | Carter Robert Ward | Device and method for trenchless replacement of underground pipe |
US5881816A (en) * | 1997-04-11 | 1999-03-16 | Weatherford/Lamb, Inc. | Packer mill |
AU2017200721B2 (en) * | 2011-05-13 | 2017-10-19 | Baker Hughes, A Ge Company, Llc | Multi-position mechanical spear for multiple tension cuts while removing cuttings |
US20120285684A1 (en) * | 2011-05-13 | 2012-11-15 | Baker Hughes Incorporated | Multi-position Mechanical Spear for Multiple Tension Cuts while Removing Cuttings |
US8869896B2 (en) * | 2011-05-13 | 2014-10-28 | Baker Hughes Incorporated | Multi-position mechanical spear for multiple tension cuts while removing cuttings |
US20120292027A1 (en) * | 2011-05-16 | 2012-11-22 | Baker Hughes Incorporated | Tubular Cutting with Debris Filtration |
NO20131467A1 (en) * | 2011-05-16 | 2013-11-05 | Baker Hughes Holdings Llc | CUTTING A PIPE CONSTRUCTION WITH A SEALED RING ROOM AND FLUID FLOW FOR CUTTING REMOVAL |
NO345654B1 (en) * | 2011-05-16 | 2021-05-31 | Baker Hughes Holdings Llc | Cutting of pipes with waste filtration " |
US8881819B2 (en) * | 2011-05-16 | 2014-11-11 | Baker Hughes Incorporated | Tubular cutting with a sealed annular space and fluid flow for cuttings removal |
US20120292028A1 (en) * | 2011-05-16 | 2012-11-22 | Baker Hughes Incorporated | Tubular Cutting with a Sealed Annular Space and Fluid Flow for Cuttings Removal |
US8881818B2 (en) * | 2011-05-16 | 2014-11-11 | Baker Hughes Incorporated | Tubular cutting with debris filtration |
US8540458B2 (en) | 2011-06-14 | 2013-09-24 | Roodle, Inc. | Center hole ram cable puller |
US20130048268A1 (en) * | 2011-08-31 | 2013-02-28 | Baker Hughes Incorporated | Multi-position Mechanical Spear for Multiple Tension Cuts with Releasable Locking Feature |
NO346889B1 (en) * | 2011-08-31 | 2023-02-13 | Baker Hughes Holdings Llc | MECHANICAL MULTI-POSITION SPEAKER FOR MULTIPLE STRETCH CUTS WITH RELEASE LOCKING FUNCTION |
US8893791B2 (en) * | 2011-08-31 | 2014-11-25 | Baker Hughes Incorporated | Multi-position mechanical spear for multiple tension cuts with releasable locking feature |
US20140119835A1 (en) * | 2012-10-25 | 2014-05-01 | Southeast Directional Drilling, Llc | Casing Puller |
US9631741B2 (en) | 2012-10-25 | 2017-04-25 | Southeast Directional Drilling, Llc | Casing puller |
US9085945B2 (en) * | 2012-10-25 | 2015-07-21 | Southeast Directional Drilling, Llc | Casing puller |
US11448028B2 (en) | 2020-08-06 | 2022-09-20 | Saudi Arabian Oil Company | Milling packers below restrictions in a wellbore casing |
US11655685B2 (en) | 2020-08-10 | 2023-05-23 | Saudi Arabian Oil Company | Downhole welding tools and related methods |
US11549329B2 (en) | 2020-12-22 | 2023-01-10 | Saudi Arabian Oil Company | Downhole casing-casing annulus sealant injection |
US11828128B2 (en) | 2021-01-04 | 2023-11-28 | Saudi Arabian Oil Company | Convertible bell nipple for wellbore operations |
US11598178B2 (en) | 2021-01-08 | 2023-03-07 | Saudi Arabian Oil Company | Wellbore mud pit safety system |
US11448026B1 (en) | 2021-05-03 | 2022-09-20 | Saudi Arabian Oil Company | Cable head for a wireline tool |
US11859815B2 (en) | 2021-05-18 | 2024-01-02 | Saudi Arabian Oil Company | Flare control at well sites |
US11905791B2 (en) | 2021-08-18 | 2024-02-20 | Saudi Arabian Oil Company | Float valve for drilling and workover operations |
US11913298B2 (en) | 2021-10-25 | 2024-02-27 | Saudi Arabian Oil Company | Downhole milling system |
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