Application Type
Patent
Application SubType
PCT National Phase
(10) Registration Number and Date
BNN20170095 01.04.2023
Status
Registered
(180) Expiration Date
(20) Filing Number and Date
BN N/2017/0095 01.09.2015
(40) Publication Number and Date
BN N/2017/0095
A
01.04.2023
(86) PCT Filing Number and Date
(87) PCT Publication Number and Date
(85) National Entry Date
(30) Priority Details
AU 2015901757
14.05.2015
(71/73) Applicant
(72) Inventor
(EN) STANGHERLIN, Guido
(EN) MURPHY, Eugene
(74) Representative Name
(54) Title
(EN) METHOD AND SYSTEM FOR CONTROLLING GAS FLOW
(57) Abstract
(EN)
A well system and method including applying suction to a wellhead housing outlet (8) to divert the flow of subterranean gas from flowing through a gas conduit through the wellhead housing (4). An operation can then safely be performed on a component (e.g. removing a hanger) of the wellhead apparatus. Well gas can be diverted to a flare system (200). Suction can be applied by a venturi system including eductors (104,106). The method includes opening the gas conduit outlet once a pressure sensed at the conduit outlet is negative. Suction may also be applied to an upper outlet (14). Also claimed is: decreasing the suction applied to the upper outlet to pull a hanger assembly into position.
(58) Citations