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Class Information
Number: 166/250.04
Name: Wells > Processes > With indicating, testing, measuring or locating > Plug indicating or releasing
Description: Indicating including the step(s) of monitoring the position or disengagement of a flow stopping device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7373976 |
Well production optimizing system |
May. 20, 2008 |
| 6789619 |
Apparatus and method for detecting the launch of a device in oilfield applications |
Sep. 14, 2004 |
| 6098709 |
Wellhead union with safety interlock |
Aug. 8, 2000 |
| 5967231 |
Plug release indication method |
Oct. 19, 1999 |
| 5957201 |
Verification apparatus and method for a static wellhead plug |
Sep. 28, 1999 |
| RE36244 |
Well plugging apparatus and method |
Jul. 6, 1999 |
| 5544705 |
Method for injecting fluid into a wellbore |
Aug. 13, 1996 |
| 5252918 |
Apparatus and method for electromagnetically detecting the passing of a plug released into a well by a bridge circuit |
Oct. 12, 1993 |
| 5040603 |
Sequential remote control plug release system |
Aug. 20, 1991 |
| 4427065 |
Cementing plug container and method of use thereof |
Jan. 24, 1984 |
| 4317486 |
Cementing head apparatus and method of operation |
Mar. 2, 1982 |
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