Apparatus for clearing a plugged control line
AssigneeAbu Dhabi National Oil Company
InventorAbdallah Sobhi ALHALABI
Life of this patent
Estimating the term…
Abstract
The present invention relates to an apparatus (20) for clearing a plugged control line (12), in particular for clearing a plugged surface controlled sub-surface safety valve (11) control line (12), the apparatus (20) comprising a connecting means (27) configured to connect the apparatus (20) to an upstream end of the plugged control line (12); and a pumping means (21, 22) configured to pump a dissolvent (30) through the connecting means (27) into the control line (12) to build up dissolvent pressure in the control line (12). The invention further comprises a bore system and a method for clearing a plugged control line (12).
Claims23
An apparatus for clearing a plugged control line, in particular for clearing a plugged surface controlled sub-surface safety valve control line, the apparatus comprising:
- a. a connecting means configured to connect the apparatus to an upstream end of the plugged control line;
- and
- b. a pumping means configured to pump a dissolvent through the connecting means into the control line to build up dissolvent pressure in the control line.
(canceled)
(canceled)
A method for clearing a plugged control line, in particular for clearing a plugged surface controlled sub-surface safety valve control line, the method comprising the step of:
- a. pumping a dissolvent into an upstream end of the control line to build up dissolvent pressure in the control line.
25-27. (canceled)
Dependencies are inferred from the claim text.