E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/2, 166/43
E21B 34/10 (2006.01) E21B 33/12 (2006.01) E21B 34/14 (2006.01) E21B 47/00 (2006.01) E21B 47/06 (2006.01) E21B 49/08 (2006.01)
Patent
CA 1136035
WELL TEST SYSTEMS AND METHODS Abstract of the Invention A well packer and depending foot valve are landed in a well. A landing nipple depends from the foot valve. A tubing string sealingly engages the packer and includes a circulating valve. A transducer-valve fitting may be run with the packer foot valve assembly or it may be run at a later time and landed in the landing nipple. The foot valve is operated by an actuator which is positioned above the packer and is ex- posed to the casing tubing annulus as well as tubing pressure. The circulating valve is also exposed to casing-tubing and tubing pressure. The foot valve is controlled by the differ- ential in pressures as is the circulating valve. A transducer may be landed in the transducer fitting and by selectively opening and closing the foot valve data may be taken from the well during both flow and non-flow conditions. After testing is completed the transducer and transducer fitting may be removed and a plug inserted in their place permitting flow thereafter through the foot valve which acts as a subsurface safety valve.
350944
Otis Engineering Corporation
Smart & Biggar
LandOfFree
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