Abstract: A hydraulic flushing system includes a hydraulic downhole control line that runs from a hydraulic source to a surface controlled sub-surface safety valve of an underwater hydrocarbon extraction facility, where the hydraulic downhole control line includes a directional control valve. The hydraulic flushing system further includes a purge line coupled to the hydraulic downhole control line downstream of the directional control valve to a service line. The purge line includes a fluid isolation valve therein to enable purging of a hydraulic fluid. The hydraulic flushing system further includes a service line coupled to the purge line via the fluid isolation valve to store the purged hydraulic fluid.

Abstract: A hydraulic flushing system comprising: a hydraulic downhole control line that runs from a hydraulic source to a surface controlled sub-surface safety valve of an underwater hydrocarbon extraction facility, said hydraulic downhole control line having a directional control valve therein; and, a purge line that runs from the hydraulic downhole control line downstream of the directional control valve to a service line, said purge line having a fluid isolation valve therein.

Abstract: An apparatus and method for the insertion of a medical tool, for example a needle, within the human body. The apparatus and method are particularly useful in prostate brachytherapy and in prostate biopsy. The apparatus comprises a telescoping guide universally coupled to a first and second positioning means that are used to automatically and/or manually position the guide at a desired needle insertion trajectory. Automatic positioning of the guide is accomplished with reference to three-dimensional transrectal ultrasound images that can also be used to show needle insertion in real-time. The apparatus may be manually positioned in the approximate insertion trajectory and then a computer interconnected with the apparatus may be used to achieve the final trajectory based upon the ultrasound images. The apparatus is particularly useful in cases where multiple needles are to be inserted into a small target area and in cases where pubic arch interference prevents direct access to the target area.

Abstract: A system for use in controlling and/or testing an underwater hydrocarbon production system, has a number of control modules for controlling well trees. The control modules are provided, not at the trees, but at a control center for location underwater. The trees are in communication with associated ones of the control modules.

Abstract: A system for use in controlling and/or testing an underwater hydrocarbon production system, has a number of control modules for controlling well trees. The control modules are provided, not at the trees, but at a control centre for location underwater. The trees are in communication with associated ones of the control modules.