| US 7,604,050 B2 | ||
| Wellhead and control stack pressure test plug tool | ||
| L. Murray Dallas, Streetman, Tex. (US); and Bob McGuire, Moore, Okla. (US) | ||
| Assigned to Stinger Wellhead Protection, Inc., Oklahoma City, Okla. (US) | ||
| Filed on Apr. 30, 2008, as Appl. No. 12/112,283. | ||
| Application 12/112283 is a division of application No. 11/699264, filed on Jan. 29, 2007, granted, now 7,516,786, filed on Apr. 14, 2009. | ||
| Application 11/699264 is a division of application No. 10/799085, filed on Mar. 12, 2004, granted, now 7,207,384, filed on Apr. 24, 2007. | ||
| Prior Publication US 2008/0251251 A1, Oct. 16, 2008 | ||
| Int. Cl. E21B 47/10 (2006.01); G01M 3/02 (2006.01) | ||
| U.S. Cl. 166—250.08 [166/75.13; 73/46] | 20 Claims |
| 14. A test plug tool used to test a pressure integrity of a joint between a production casing and a wellhead stack assembly,
comprising:
a tubular member for suspending a test plug inside a top end of the production casing, the tubular member having a pin threaded
top end for threaded engagement with a flanged adapter for sealing a top of the wellhead stack assembly;
a hanger flange located below the pin threaded top end, the hanger flange having a bottom shoulder received in a bowl-shaped
abutment in a tubing head spool of the wellhead stack assembly, the hanger flange including at least one peripheral groove
for retaining an O-ring seal that provides a fluid seal between the hanger flange and the tubing head spool; and
a fluid passage through a sidewall of the tubular member, the fluid passage being located below the hanger flange and above
the test plug.
|