US20110048735A1 - Well cap rod hanger - Google Patents
Well cap rod hanger Download PDFInfo
- Publication number
- US20110048735A1 US20110048735A1 US12/550,838 US55083809A US2011048735A1 US 20110048735 A1 US20110048735 A1 US 20110048735A1 US 55083809 A US55083809 A US 55083809A US 2011048735 A1 US2011048735 A1 US 2011048735A1
- Authority
- US
- United States
- Prior art keywords
- well
- rod
- head
- cylindrical portion
- well head
- 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
Links
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 230000037390 scarring Effects 0.000 description 1
- 239000010959 steel Substances 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
- 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
Definitions
- the present invention relates generally to the servicing and sealing of oil or gas wells. More particularly, the present invention relates to well caps for attachment to a well head.
- An oil or gas well can be secured (to maintain well control) by having a stuffing box attached to the well head.
- a series of interconnected rods, the rod string begins at the well head and extends down to either connect to the oil pump, which lies below the earth's surface where the hydrocarbon-bearing formation is found, or to reach the gas reservoir.
- Attached to the top of the uppermost rod is a polished rod, which runs through the stuffing box. The smooth surface of the polished rod allows efficient hydraulic seals to be formed around the reciprocating or rotating rod string.
- rod elevators When servicing the well, the stuffing box and polished rod are removed to allow access to the rod string. Rods may be removed to service the well and its components. While the stuffing box and polished rod are removed from the rod string, rod elevators support the weight of the rod string.
- a rod elevator is a lightweight elevator designed for running and retrieving the rod string in wells equipped with a rod pump. Rod elevators can be used on a service rig or a rod unit specifically designed for running and retrieving rod strings. The elevator is not designed to secure the well head if the well was to become pressurized.
- Radigans may or may not be present on the well head.
- a radigan is a semi-circular rubber clamp seated inside the well head. The radigans can be closed to prevent a blow out if the well pressure rises quickly and function by closing around a rod to close the hole.
- radigans may be used to secure a well head only if there are rods running through the well head, and if pressure in the well quickly rises (which may lead to a blow out), the polished rod and stuffing box must be quickly attached to the well head before the well can be secured. Even once the polished rod and stuffing box are in place, closing the radigans takes several minutes.
- the usefulness of using radigans to secure the well is further limited in that radigans will not permanently secure the well, the radigans must be built to a size that is compatible with a given rod string to secure a well to the extent that they can, and radigans cannot support the weight of the rod string.
- the stuffing box and polished rod must be attached to the rod string using rod elevators. This process can take several minutes because the stuffing box and polished rod are heavy (can weigh 136 kg/300 lb) and extremely difficult to handle (9 m/30 ft long).
- the current techniques to temporarily secure the stuffing box and polished rod to the well head and rod string, to secure the well can be dangerous when working under pressure.
- the stuffing box and polished rod need to be quickly attached to the well head and rod string to secure the well.
- a quick change in weather conditions (rain, hail, lightning, high winds, etc.) can make working conditions dangerous, thus securing the well quickly and safely becomes extremely important.
- hydrocarbon spills during a blow out can often only be controlled as quickly as the workers can attach the stuffing box and polished rod to the well head and rod string.
- a well cap is a is a threaded piece of steel that attaches to the well head to secure the well. Previous well caps cannot be used to secure a well head while rods are present in the well.
- U.S. Pat. No. 4,850,736 issued to Petrie teaches a rod clamp that facilitates servicing of an oil well, reduces the likelihood of a rod string falling into the inground portion of the well, and minimizes scarring of polished rods by eliminating the need to reposition.
- the invention taught by Petrie does not assist in securing the well.
- the present invention provides a well cap rod hanger for securing a well head having an upper portion adapted to be attached to a rod elevator, a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a downhole implement.
- the upper portion including a head and a neck, the head having a greater outer dimension than the neck, and a tapered portion between the head and the neck.
- the well cap rod hanger further includes a tapered portion between the head and the neck.
- the downhole implement includes a rod string. In one embodiment, the downhole implement includes a measuring device. In one embodiment, the measuring device includes a down hole recorder.
- the present invention provides a method of securing a well having a well head, including providing a well cap rod hanger having an upper portion adapted to be attached to a rod elevator, a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string, connecting the rod string and the second cylindrical portion, and connecting the lower cylindrical portion to the well head, wherein the well head is secured with the rod string within the well.
- a fluid tight seal is formed between the lower cylindrical portion and the well head.
- the method includes lowering the rod string and the well cap rod hanger using the elevator until the lower cylindrical portion is at the well head.
- the present invention provides a well cap rod hanger for securing a well head having an upper portion, having a head and neck, the upper portion adapted to be attached to a rod elevator, a body having a gripping portion and a lower cylindrical portion, the lower cylindrical portion having a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string.
- FIG. 1 is a schematic of a well cap rod hanger of the present invention.
- FIG. 2 is a schematic of the well cap rod hanger of FIG. 1 in use with a well head, a rod string, and a rod elevator.
- the present invention provides a well cap rod hanger for temporarily securing a well head or well head and a rod string.
- a well head can be secured and a device intended to depend into the well, such as a measuring device, may be attached to the apparatus.
- a well cap rod hanger 10 in accordance with the present invention includes a head 20 , a tapered shoulder 30 , and a neck 40 .
- the head 20 , a tapered shoulder 30 , and a neck 40 collectively comprise the upper portion 45 .
- the upper portion 45 is adapted to be attached to a rod elevator 100 ( FIG. 2 ) (or other lifting means, such as a crane or travelling block etc. known to one skilled in the art), preferably through grasping by the rod elevator, so that the rod elevator 100 may be used to support the rod string 90 and move the well cap rod hanger 10 up/down to move the rod string 90 in/out of the well.
- a rod elevator 100 FIG. 2
- other lifting means such as a crane or travelling block etc. known to one skilled in the art
- the tapered shoulder 30 is to hold a rod elevator 100 , the width of the neck 40 is narrow enough to be grasped by the rod elevator 100 and the length of the neck 40 is preferably equal to or greater than the grasp of the rod elevator 100 .
- the head 20 and the neck 40 are each preferably cylindrical in shape.
- the well cap rod hanger 10 also includes a tapered shoulder 50 and a body 60 , the body 60 having a threaded lower portion 65 adapted to be threadedly attached to the interior of a well head 80 ( FIG. 2 ).
- the tapered portion 50 is between the neck 40 and a body 60 .
- the body 60 is preferably cylindrical in shape.
- the tapered shoulder 50 , the body 60 , and the threaded lower portion 65 collectively comprise the lower portion 67 .
- the pin 70 has a threaded surface 75 adapted to be threadedly attached to the a rod string 90 ( FIG. 2 ).
- the upper portion 45 may be integral to the lower portion 67 , or the upper portion 45 and the lower portion 67 may be separate components adapted to be attached to each other.
- the pin 70 may be integral to the lower portion 67 , or the pin 70 may and the lower portion 67 may be separate components adapted to be attached to each other.
- the upper portion 45 may be any type of contact point that can be securely grasped by the rod elevator 100 .
- the portion of the well cap rod hanger 10 above the lower portion 67 may be a hook, clevis, eye, or other attachment means known to one skilled in the art.
- the well cap rod hanger 10 is depicted with the well head 80 and the rod string 90 .
- the rod elevator 100 grasps the upper portion 45 and the well cap rod hanger 10 is lowered into position such that the threaded lower portion 65 can be secured to the well head 80 and that the pin 70 can be secured to the rod string 90 .
- the threaded lower portion 65 is threadedly attached to the well head 80 and the pin 70 is threadedly attached to the rod string 90 .
- the threaded lower portion 65 and the pin 70 can be threadedly attached to the well head 80 and rod string 90 , respectively, through use of a pipe wrench, which may grip the preferably cylindrical body 60 , and the rod string 90 , respectively.
- the threaded lower portion 65 and threaded surface 75 are threaded in the same orientation, allowing them to be tightened or loosened in the same direction to threadedly attach the well cap rod hanger 10 to the well head 80 and rod string 90 .
- the pin 70 may be first threadedly attached to the rod string 90 while the well cap rod hanger 10 is grasped by the rod elevator 100 while the rod string is suspended above the well head 80 .
- the welt cap rod hanger 10 and rod string 90 are then lowered together by the rod elevator to allow the lower portion 65 to be threadedly attached to the well head 80 , forming a fluid seal.
- the rod elevator 100 can be released because the well cap rod hanger 10 is bearing the weight of the rod string 90 .
- the well cap rod hanger 10 also secures the well head 80 because it is threadedly sealingly attached to the well head 80 .
- the threaded lower portion 65 and the pin 70 are respectively disengaged from the well head 80 and from the rod string 90 .
- the well cap rod hanger 10 is then removed from the well head 80 . Removal of the well cap rod hanger 10 from the well head 80 is possible by using a pipe wrench to disengage the threaded lower portion 65 and the pin 70 from the well head 80 and the rod string 90 , respectively.
- the threaded portion lower portion 65 and pin 70 may be constructed with various diameters, the respective diameters being selected to create a well cap rod hanger 10 that is compatible with a given well head and rod string.
- the invention herein described may be used to suspend a rod string.
- the typical practice is to back off the polished rod and let the rod string sit on the bottom of the well. In this case, the rod string will bend and the pump can seize.
- the invention herein described can be used to suspend the rods in the tubing so they can be used at a later date.
- a typical rod string and pump can cost up to $20,000.
- the invention herein described may also be used to suspend any downhole tool within a casing or production tubing.
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- 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 well cap rod hanger for securing a well head having an upper portion adapted to be attached to a rod elevator, a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string.
Description
- The present invention relates generally to the servicing and sealing of oil or gas wells. More particularly, the present invention relates to well caps for attachment to a well head.
- An oil or gas well can be secured (to maintain well control) by having a stuffing box attached to the well head. A series of interconnected rods, the rod string, begins at the well head and extends down to either connect to the oil pump, which lies below the earth's surface where the hydrocarbon-bearing formation is found, or to reach the gas reservoir. Attached to the top of the uppermost rod is a polished rod, which runs through the stuffing box. The smooth surface of the polished rod allows efficient hydraulic seals to be formed around the reciprocating or rotating rod string.
- When servicing the well, the stuffing box and polished rod are removed to allow access to the rod string. Rods may be removed to service the well and its components. While the stuffing box and polished rod are removed from the rod string, rod elevators support the weight of the rod string. A rod elevator is a lightweight elevator designed for running and retrieving the rod string in wells equipped with a rod pump. Rod elevators can be used on a service rig or a rod unit specifically designed for running and retrieving rod strings. The elevator is not designed to secure the well head if the well was to become pressurized.
- Radigans may or may not be present on the well head. A radigan is a semi-circular rubber clamp seated inside the well head. The radigans can be closed to prevent a blow out if the well pressure rises quickly and function by closing around a rod to close the hole. Thus, radigans may be used to secure a well head only if there are rods running through the well head, and if pressure in the well quickly rises (which may lead to a blow out), the polished rod and stuffing box must be quickly attached to the well head before the well can be secured. Even once the polished rod and stuffing box are in place, closing the radigans takes several minutes. The usefulness of using radigans to secure the well is further limited in that radigans will not permanently secure the well, the radigans must be built to a size that is compatible with a given rod string to secure a well to the extent that they can, and radigans cannot support the weight of the rod string.
- The stuffing box and polished rod must be attached to the rod string using rod elevators. This process can take several minutes because the stuffing box and polished rod are heavy (can weigh 136 kg/300 lb) and extremely difficult to handle (9 m/30 ft long). The current techniques to temporarily secure the stuffing box and polished rod to the well head and rod string, to secure the well, can be dangerous when working under pressure. Often, the stuffing box and polished rod need to be quickly attached to the well head and rod string to secure the well. A quick change in weather conditions (rain, hail, lightning, high winds, etc.) can make working conditions dangerous, thus securing the well quickly and safely becomes extremely important. Thus, hydrocarbon spills during a blow out can often only be controlled as quickly as the workers can attach the stuffing box and polished rod to the well head and rod string.
- A well cap is a is a threaded piece of steel that attaches to the well head to secure the well. Previous well caps cannot be used to secure a well head while rods are present in the well.
- U.S. Pat. No. 4,467,871 issued to Rollwitz teaches a clamp-based rod stand that attaches to a polished rod by encirclement and holds it above the well head, thus freeing up the pumpjack. The invention taught by Rollwitz does not assist in securing the well.
- U.S. Pat. No. 4,850,736 issued to Petrie teaches a rod clamp that facilitates servicing of an oil well, reduces the likelihood of a rod string falling into the inground portion of the well, and minimizes scarring of polished rods by eliminating the need to reposition. The invention taught by Petrie does not assist in securing the well.
- Given the difficulty, danger, and wastage experienced while securing a well head with a stuffing box and rod string, it is desirable to provide a device to facilitate the servicing and securing of a well or rod string.
- It is an object of the present invention to obviate or mitigate at least one disadvantage of previous method and apparatus for temporarily securing a rod string and well head.
- In a first aspect, the present invention provides a well cap rod hanger for securing a well head having an upper portion adapted to be attached to a rod elevator, a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a downhole implement.
- In one embodiment, the upper portion including a head and a neck, the head having a greater outer dimension than the neck, and a tapered portion between the head and the neck.
- In one embodiment, the well cap rod hanger further includes a tapered portion between the head and the neck.
- In one embodiment, the downhole implement includes a rod string. In one embodiment, the downhole implement includes a measuring device. In one embodiment, the measuring device includes a down hole recorder.
- In a further aspect, the present invention provides a method of securing a well having a well head, including providing a well cap rod hanger having an upper portion adapted to be attached to a rod elevator, a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string, connecting the rod string and the second cylindrical portion, and connecting the lower cylindrical portion to the well head, wherein the well head is secured with the rod string within the well.
- In one embodiment, a fluid tight seal is formed between the lower cylindrical portion and the well head.
- In one embodiment, the method includes lowering the rod string and the well cap rod hanger using the elevator until the lower cylindrical portion is at the well head.
- In a further aspect, the present invention provides a well cap rod hanger for securing a well head having an upper portion, having a head and neck, the upper portion adapted to be attached to a rod elevator, a body having a gripping portion and a lower cylindrical portion, the lower cylindrical portion having a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head, and a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string.
- Other aspects and features of the present invention will become apparent to those ordinarily skilled in the art upon review of the following description of specific embodiments of the invention in conjunction with the accompanying figures.
- Embodiments of the present invention will now be described, by way of example only, with reference to the attached Figures, wherein:
-
FIG. 1 is a schematic of a well cap rod hanger of the present invention; and -
FIG. 2 is a schematic of the well cap rod hanger ofFIG. 1 in use with a well head, a rod string, and a rod elevator. - Generally, the present invention provides a well cap rod hanger for temporarily securing a well head or well head and a rod string. Alternatively, a well head can be secured and a device intended to depend into the well, such as a measuring device, may be attached to the apparatus.
- Referring to
FIG. 1 , a wellcap rod hanger 10 in accordance with the present invention includes ahead 20, atapered shoulder 30, and aneck 40. Thehead 20, atapered shoulder 30, and aneck 40 collectively comprise theupper portion 45. Theupper portion 45 is adapted to be attached to a rod elevator 100 (FIG. 2 ) (or other lifting means, such as a crane or travelling block etc. known to one skilled in the art), preferably through grasping by the rod elevator, so that therod elevator 100 may be used to support therod string 90 and move the wellcap rod hanger 10 up/down to move therod string 90 in/out of the well. Thetapered shoulder 30 is to hold arod elevator 100, the width of theneck 40 is narrow enough to be grasped by therod elevator 100 and the length of theneck 40 is preferably equal to or greater than the grasp of therod elevator 100. Thehead 20 and theneck 40 are each preferably cylindrical in shape. - The well
cap rod hanger 10 also includes atapered shoulder 50 and abody 60, thebody 60 having a threadedlower portion 65 adapted to be threadedly attached to the interior of a well head 80 (FIG. 2 ). Thetapered portion 50 is between theneck 40 and abody 60. Thebody 60 is preferably cylindrical in shape. Thetapered shoulder 50, thebody 60, and the threadedlower portion 65 collectively comprise thelower portion 67. Thepin 70 has a threadedsurface 75 adapted to be threadedly attached to the a rod string 90 (FIG. 2 ). - The
upper portion 45 may be integral to thelower portion 67, or theupper portion 45 and thelower portion 67 may be separate components adapted to be attached to each other. Similarly, thepin 70 may be integral to thelower portion 67, or thepin 70 may and thelower portion 67 may be separate components adapted to be attached to each other. - The
upper portion 45 may be any type of contact point that can be securely grasped by therod elevator 100. For example, rather than comprising thehead 20, taperedshoulder 30, andneck 40, or some combination of those components, the portion of the wellcap rod hanger 10 above thelower portion 67 may be a hook, clevis, eye, or other attachment means known to one skilled in the art. - Referring to
FIG. 2 , the wellcap rod hanger 10 is depicted with thewell head 80 and therod string 90. Therod elevator 100 grasps theupper portion 45 and the wellcap rod hanger 10 is lowered into position such that the threadedlower portion 65 can be secured to thewell head 80 and that thepin 70 can be secured to therod string 90. To secure the wellcap rod hanger 10 to thewell head 80 and to therod string 90, the threadedlower portion 65 is threadedly attached to thewell head 80 and thepin 70 is threadedly attached to therod string 90. The threadedlower portion 65 and thepin 70 can be threadedly attached to thewell head 80 androd string 90, respectively, through use of a pipe wrench, which may grip the preferablycylindrical body 60, and therod string 90, respectively. The threadedlower portion 65 and threadedsurface 75 are threaded in the same orientation, allowing them to be tightened or loosened in the same direction to threadedly attach the wellcap rod hanger 10 to thewell head 80 androd string 90. - Alternatively, the
pin 70 may be first threadedly attached to therod string 90 while the wellcap rod hanger 10 is grasped by therod elevator 100 while the rod string is suspended above thewell head 80. The weltcap rod hanger 10 androd string 90 are then lowered together by the rod elevator to allow thelower portion 65 to be threadedly attached to thewell head 80, forming a fluid seal. - Once the
pin 70 is threadedly attached to therod string 90 and the threadedlower portion 65 is attached to thewell head 80, therod elevator 100 can be released because the wellcap rod hanger 10 is bearing the weight of therod string 90. The wellcap rod hanger 10 also secures thewell head 80 because it is threadedly sealingly attached to thewell head 80. - To remove the well
cap rod hanger 10, the threadedlower portion 65 and thepin 70 are respectively disengaged from thewell head 80 and from therod string 90. The wellcap rod hanger 10 is then removed from thewell head 80. Removal of the wellcap rod hanger 10 from thewell head 80 is possible by using a pipe wrench to disengage the threadedlower portion 65 and thepin 70 from thewell head 80 and therod string 90, respectively. - The threaded portion
lower portion 65 andpin 70 may be constructed with various diameters, the respective diameters being selected to create a wellcap rod hanger 10 that is compatible with a given well head and rod string. - In addition to sealing a well, the invention herein described may be used to suspend a rod string. When a well is abandoned or put off line, the typical practice is to back off the polished rod and let the rod string sit on the bottom of the well. In this case, the rod string will bend and the pump can seize. The invention herein described can be used to suspend the rods in the tubing so they can be used at a later date. A typical rod string and pump can cost up to $20,000. The invention herein described may also be used to suspend any downhole tool within a casing or production tubing.
- In the preceding description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the embodiments of the invention. However, it will be apparent to one skilled in the art that these specific details are not required in order to practice the invention.
- The above-described embodiments of the invention are intended to be examples only. Alterations, modifications and variations can be effected to the particular embodiments by those of skill in the art without departing from the scope of the invention, which is defined solely by the claims appended hereto.
Claims (10)
1. A well cap rod hanger for securing a well head comprising:
an upper portion adapted to be attached to a rod elevator;
a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head; and
a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a downhole implement.
2. The well cap rod hanger of claim 1 , the upper portion including a head and a neck, the head having a greater outer dimension than the neck, and a tapered portion between the head and the neck.
3. The well cap rod hanger of claim 2 further comprising a tapered portion between the head and the neck.
4. The well cap rod hanger of claim 1 , the downhole implement comprising a rod string.
5. The well cap rod hanger of claim 1 , the downhole implement comprising a measuring device.
6. The well cap rod hanger of claim 5 , the measuring device comprising a down hole recorder.
7. A method of securing a well having a well head, comprising:
a. providing a well cap rod hanger having:
an upper portion adapted to be attached to a rod elevator;
a body having a lower cylindrical portion with a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head; and
a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string;
b. connecting the rod string and the second cylindrical portion; and
c. connecting the lower cylindrical portion to the well head,
wherein the well head is secured with the rod string inside the well.
8. The method of claim 7 , wherein a fluid tight seal is formed between the lower cylindrical portion and the well head.
9. The method of claim 7 , further comprising lowering the rod string and the well cap rod hanger using the elevator until the lower cylindrical portion is at the well head.
10. A well cap rod hanger for securing a well head comprising:
an upper portion, having a head and neck, the upper portion adapted to be attached to a rod elevator;
a body having a gripping portion and a lower cylindrical portion, the lower cylindrical portion having a threaded outer surface adapted to be threadedly attached to the inside diameter of a well head; and
a second cylindrical portion extending downward from the body, the second cylindrical portion adapted to be threadedly attached to a rod string.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US12/550,838 US20110048735A1 (en) | 2009-08-31 | 2009-08-31 | Well cap rod hanger |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US12/550,838 US20110048735A1 (en) | 2009-08-31 | 2009-08-31 | Well cap rod hanger |
Publications (1)
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US20110048735A1 true US20110048735A1 (en) | 2011-03-03 |
Family
ID=43623132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US12/550,838 Abandoned US20110048735A1 (en) | 2009-08-31 | 2009-08-31 | Well cap rod hanger |
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US (1) | US20110048735A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016149494A1 (en) * | 2015-03-17 | 2016-09-22 | Rahim Shazam | Lifting device and method |
US11391106B2 (en) | 2018-03-05 | 2022-07-19 | Gr Energy Services Management, Lp | Nightcap assembly for closing a wellhead and method of using same |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4467871A (en) * | 1983-04-11 | 1984-08-28 | Rollwitz Curtis W | Rod stand |
US4844171A (en) * | 1988-03-22 | 1989-07-04 | Russell Jr William G | Adapter |
US4850736A (en) * | 1988-03-31 | 1989-07-25 | Petrie Douglas S | Servicing device for oil well rod pumps |
US4995457A (en) * | 1989-12-01 | 1991-02-26 | Halliburton Company | Lift-through head and swivel |
US5327975A (en) * | 1991-04-08 | 1994-07-12 | Rotating Production Systems, Inc. | Tubing anchor catcher with rotating mandrel |
US6233819B1 (en) * | 1999-01-21 | 2001-05-22 | Yamaha Corporation | Fine-pitch electrode, process for producing the same, and fine-pitch electrode unit |
-
2009
- 2009-08-31 US US12/550,838 patent/US20110048735A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4467871A (en) * | 1983-04-11 | 1984-08-28 | Rollwitz Curtis W | Rod stand |
US4844171A (en) * | 1988-03-22 | 1989-07-04 | Russell Jr William G | Adapter |
US4850736A (en) * | 1988-03-31 | 1989-07-25 | Petrie Douglas S | Servicing device for oil well rod pumps |
US4995457A (en) * | 1989-12-01 | 1991-02-26 | Halliburton Company | Lift-through head and swivel |
US5327975A (en) * | 1991-04-08 | 1994-07-12 | Rotating Production Systems, Inc. | Tubing anchor catcher with rotating mandrel |
US6233819B1 (en) * | 1999-01-21 | 2001-05-22 | Yamaha Corporation | Fine-pitch electrode, process for producing the same, and fine-pitch electrode unit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016149494A1 (en) * | 2015-03-17 | 2016-09-22 | Rahim Shazam | Lifting device and method |
US9976362B2 (en) | 2015-03-17 | 2018-05-22 | Shazam Rahim | Lifting device and method |
US11391106B2 (en) | 2018-03-05 | 2022-07-19 | Gr Energy Services Management, Lp | Nightcap assembly for closing a wellhead and method of using same |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: J-CAP OILFIELD, INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUSS, CHRISTOPHER;FUSS, JARETT LEE;REEL/FRAME:023509/0417 Effective date: 20091025 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |