US 12,241,327 B1
Advanced welltracker deployment capsule for oil and gas wells
Torty Chinenye Kalu-Ulu, Ras Tanura (SA); James Ohioma Arukhe, Dhahran (SA); and Ali Naji Alaithan, Umran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Oct. 19, 2023, as Appl. No. 18/490,389.
Int. Cl. E21B 23/00 (2006.01); E21B 23/10 (2006.01); E21B 33/13 (2006.01); E21B 34/04 (2006.01); E21B 43/26 (2006.01); E21B 47/12 (2012.01)
CPC E21B 23/10 (2013.01) [E21B 34/04 (2013.01); E21B 47/138 (2020.05)] 20 Claims
OG exemplary drawing
 
1. A system for deploying and retrieving a welltracker in a well comprising:
a Christmas tree coupled to the well comprising a master valve configured to open and close; and
a sensor deployment capsule coupled to the Christmas tree, the sensor deployment capsule comprising:
a cylindrical housing comprising a removable cap screw for inserting the welltracker in the cylindrical housing, the cylindrical housing configured to store the welltracker when the master valve is closed,
wherein the master valve is configured to deploy the welltracker through the Christmas tree and into the well when open,
wherein the welltracker comprises a dissolvable weight configured to dissolve at a well fluid pressure threshold for retrieving the welltracker to the cylindrical housing;
a drain valve coupled to the cylindrical housing configured to bleed off trapped pressure in the cylindrical housing from retrieval of the welltracker through a pressure transfer line coupled to the drain valve; and
a pressure gauge coupled to the removable cap screw configured to control pressure in the sensor deployment capsule.