Muhammad U Sadiq

US Patent:

20150285037, Oct 8, 2015

Filed:

Nov 10, 2014

Appl. No.:

14/537705

Inventors:

- Kapar, MY
Muhammad Sadiq - Houston TX, US

International Classification:

E21B 41/00
B66F 11/00
E21B 15/02

Abstract:

In some aspects, an in-line passive heave compensator system includes a damper actuator, a fluid vessel, and a hydraulic manifold. The damper actuator extends and retracts in response to an external dynamic load, and the fluid vessel transfers hydraulic fluid between itself and the damper actuator (e.g., back and forth) as the damper actuator extends and retracts. The hydraulic manifold provides the channel of fluid transfer between the damper actuator and the fluid vessel. The hydraulic manifold includes an extension flow control device in an extension fluid path between the damper actuator and the fluid vessel. The extension fluid path receives fluid flow only during extension of the damper actuator. The hydraulic manifold includes a retraction flow control device in a retraction flow path between the damper actuator and the fluid vessel. The retraction flow path receives fluid flow only during the retraction of the damper actuator.