Method And Apparatus For Determining Topography Within Awellb re Environment

A method for determining topography within a wellbore environment comprises locating a probe in a wellbore, directing a beam of light from the probe onto a plurality of positions of a target region within a wellbore environment, detecting light reflected from a plurality of positions of the target region and analysing the detected light to determine a topography of the target region. Light may be directed onto the plurality of positions of the target region at the same time and/or at different times. Such a method may permit features in the wellbore environment to be monitored, or may permit a requirement for maintenance of the wellbore environment to be identified and/or a life-span of the wellbore environment to be predicted. An apparatus for determining topography within a wellbore environment is also disclosed.

Methodology for analysis of valve dynamic closure performance

A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where m L is a mass of translating components, y(t) is a piston displacement at a given time t, F τ is a force on the valve due to fluid flow, Eμ is a friction force, F D is a hydraulic damping force on the piston, F D is a spring force, FPPA is a hydraulic piston pressure assist force, F BPA is a hydraulic bore pressure assist force, and F G is a force due to gravity.

Apparatus for pre-cleaning of surgical instruments

Methodology for analysis of valve dynamic closure performance

A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where mL is a mass of translating components, y(t) is a piston displacement at a given time t, Ft is a force on the valve due to fluid flow, ?µ is a friction force, FD is a hydraulic damping force on the piston, FD is a spring force, FPPA is a hydraulic piston pressure assist force, FBPA is a hydraulic bore pressure assist force, and FG is a force due to gravity.

Methodology for analysis of valve dynamic closure performance

A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where m

Methodology for analysis of valve dynamic closure performance

A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where m L is a mass of translating components, y(t) is a piston displacement at a given time t, F τ is a force on the valve due to fluid flow, Εμ is a friction force, F D is a hydraulic damping force on the piston, F D is a spring force, FPPA is a hydraulic piston pressure assist force, F BPA is a hydraulic bore pressure assist force, and F G is a force due to gravity.

Methodology for analysis of valve dynamic closure performance

A method for calculating a valve closure time includes performing a computational fluid dynamics model simulation of the valve. The method also includes performing multiple functional performance analysis model simulations of the valve based on the computational fluid dynamics model simulation of the valve to calculate the valve closure time. The functional performance analysis model simulations are based on a numerical solution of a second order differential equation according to an equation of motion given by: (I), where mL is a mass of translating components, y(t) is a piston displacement at a given time t, Fτ is a force on the valve due to fluid flow, Εμ is a friction force, FD is a hydraulic damping force on the piston, FD is a spring force, FPPA is a hydraulic piston pressure assist force, FBPA is a hydraulic bore pressure assist force, and FG is a force due to gravity.

Apparatus for pre-cleaning of surgical instruments

The present invention provides apparatus (100, 200, 300) for cleaning an item. The apparatus comprises: a perforated member (103, 203, 303) for supporting an item to be cleaned; at least one upper nozzle (101a, 101b, 201a. 201b, 301) provided above the perforated member, directed in a downward direction, and for producing at least one first jet of fluid (104a, 104b, 204a, 204b, 304) to impinge upon the item when supported by the perforated member; and at least one lower nozzle (102, 202a, 202b, 302) provided beneath the perforated member, directed in an upward direction, and for producing at least one second jet of fluid (106, 206a, 206b, 306) to impinge upon the item when supported by the perforated member. The apparatus is configured such that when the at least one first jet and the at least one second jet are produced, the vertical component of a first jet force acting on the item to be cleaned from the at least one first jet is greater than the vertical component of a second jet force acting on the item to be cleaned from the at least one second jet.

Apparatus for pre-cleaning of surgical instruments

The present invention provides apparatus (100, 200, 300) for cleaning an item. The apparatus comprises: a perforated member (103, 203, 303) for supporting an item to be cleaned; at least one upper nozzle (101a, 101b, 201a. 201b, 301) provided above the perforated member, directed in a downward direction, and for producing at least one first jet of fluid (104a, 104b, 204a, 204b, 304) to impinge upon the item when supported by the perforated member; and at least one lower nozzle (102, 202a, 202b, 302) provided beneath the perforated member, directed in an upward direction, and for producing at least one second jet of fluid (106, 206a, 206b, 306) to impinge upon the item when supported by the perforated member. The apparatus is configured such that when the at least one first jet and the at least one second jet are produced, the vertical component of a first jet force acting on the item to be cleaned from the at least one first jet is greater than the vertical component of a second jet force acting on the item to be cleaned from the at least one second jet.

Apparatus for pre-cleaning of surgical instruments

The present invention provides apparatus (100, 200, 300) for cleaning an item. The apparatus comprises: a perforated member (103, 203, 303) for supporting an item to be cleaned; at least one upper nozzle (101a, 101b, 201a, 201b, 301) provided above the perforated member, directed in a downward direction, and for producing at least one first jet of fluid (104a, 104b, 204a, 204b, 304) to impinge upon the item when supported by the perforated member; and at least one lower nozzle (102, 202a, 202b, 302) provided beneath the perforated member, directed in an upward direction, and for producing at least one second jet of fluid (106, 206a, 206b, 306) to impinge upon the item when supported by the perforated member. The apparatus is configured such that when the at least one first jet and the at least one second jet are produced, the vertical component of a first jet force acting on the item to be cleaned from the at least one first jet is greater than the vertical component of a second jet force acting on the item to be cleaned from the at least one second jet.