Patent ID: 8220773
Filing Date: 2012-07-17
Classification: E21B,F15B,Y10T

Abstract:
1. A reset module to be used for resetting a pressure in a low pressure recipient connected to a subsea pressure control device, the reset module comprising: the low pressure recipient configured to have first and second chambers separated by a first piston, the first chamber being configured to receive a hydraulic liquid at a high pressure and the second chamber being configured to include a gas at a low pressure, wherein the first chamber is further configured to have a port via which the hydraulic liquid enters and exits the first chamber, and the second chamber is sealed such that no liquid enters or exits via a port; and a reset mechanism attached to the low pressure recipient and configured to reset the low pressure in the second chamber by actuating a first extension element to contact and displace the first piston along a given direction, wherein the first extension element is configured to move along an opposite direction independent of the first piston.