Claims
- 1. A method for removably connecting a fitting to a well casing head comprising the steps of:
coupling a nut to the fitting; threading an annular bushing on the casing head outer surface; placing the fitting on the casing head; and coupling the nut to the bushing outer surface causing the fitting to tightly seat against the casing.
- 2. A method as recited in claim 1 wherein the step of coupling the nut to the bushing outer surface comprises the step of threading the nut to the bushing outer surface.
- 3. A method as recited in claim 2 wherein the nut is a hammer nut comprising a first section having a smaller inner diameter and a second section having a larger inner diameter, and wherein the step of coupling a nut to the fitting comprises threading a retainer ring on the outer surface of the fitting, the retainer ring having an outer diameter greater than the inner diameter of the hammer nut first section, wherein as the hammer nut second section is threaded on the bushing outer surface, it causes the hammer nut first section to apply a force on the retainer ring and thereby on the fitting for tightly seating the fitting on the casing head.
- 4. A method as recited in claim 3 further comprising the step of providing a seal between the fitting and the casing head.
- 5. A method as recited in claim 3 wherein the annular bushing comprises a first annular portion, and a second bushing annular portion extending concentrically from the first bushing annular portion and having an inner surface diameter larger than the inner surface diameter than the bushing first portion, and wherein the step of threading comprises threading the annular bushing first annular portion on the casing head outer surface.
- 6. A method as recited in claim 5 wherein the step of threading comprises threading the annular bushing first annular portion on the casing head outer surface sufficiently for maintaining a portion the annular bushing second portion extending beyond the casing head.
- 7. A method as recited in claim 1 wherein coupling a nut to the fitting comprises coupling a retainer ring to the fitting and coupling the nut to the retainer ring.
- 8. A method as recited in claim 7 wherein coupling a retainer ring comprises threading the retainer ring to the outer surface of the fitting.
- 9. A method as recited in claim 7 wherein coupling the nut to the retainer ring comprises engaging the retainer ring with the nut.
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application is a divisional application of application Ser. No. 09/634,177, filed on Aug. 9, 2000 which is a continuation-in-part application of application Ser. No. 09/274,857, filed Mar. 23, 1999 which claims priority and is based on Provisional Application 60/088,586 filed Jun. 9, 1998 both of which are fully incorporated herein by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60088586 |
Jun 1998 |
US |
Divisions (1)
|
Number |
Date |
Country |
Parent |
09634177 |
Aug 2000 |
US |
Child |
10071740 |
Feb 2002 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09274857 |
Mar 1999 |
US |
Child |
09634177 |
Aug 2000 |
US |