Abstract: An apparatus for sensing data from a remote optical sensor 16 has its frequency stabilised by balancing the outputs of narrow band filter 28 30, spaced about a desired frequency 36 positioned at about the 3 db down points 40 of a broad band light source 10 using voltage control, current control or temperature control to vary the frequency of the wide band light source 10. Difference between the outputs through the two narrow band filters 28 30 can be used to drive an amplifier 48 to correct the frequency of the broad band light source. The outputs through the two narrow band filters 28 30 can be converted 52 to binary numbers and fed to a microprocessor 56 which is used, via analog conversion 60, to drive the amplifier 48. The broad band light source 10 can be pulse modulated 68 to provide temporally separate light pulses 92 94 through each of the narrow band filters 28 30, measured at separate times.

Abstract: A method for manufacturing a connection for composite tubing is disclosed. The method includes maintaining tension on the composite fibers while “winding in” the connector to the composite tubing. The tension on the fibers results in the fibers bridging across traps of the connector as they are being wound. The bridging results in improved load bearing characteristics of the connection.

Abstract: Sensor assemblies including transmitter and receiver antennas to respectively transmit or receive electromagnetic energy. The sensor assemblies are disposed in downhole tools adapted for subsurface disposal. The receiver is disposed at a distance less than six inches (15 cm) from the transmitter on the sensor body. The sensor transmitter or receiver includes an antenna with its axis tilted with respect to the axis of the downhole tool. A sensor includes a tri-axial system of antennas. Another sensor includes a cross-dipole antenna system.

Abstract: A method for navigating a 3D scene in a viewing area includes associating a point of interest with a reference shape, which is related to the shape of the 3D object, and displaying a scene according to a user-requested action, while keeping the point of interest within the reference shape and within the viewing area. The user-requested action may include translation, rotation, and zooming. The point of interest may include scene information such as a magnification factor, local orientation, and global orientation. The methods for performing a user-requested action in a 2D representation of a 3D object include determining a distance between a point of interest and a viewpoint; determining an amount of movement from a user input; and performing the user-requested action at a rate based on the amount of movement from the user input multiplied by a distance factor based on the distance between the point of interest and the viewpoint.

Abstract: An apparatus for measuring fluid resistivity includes a flow line adapted to be in fluid communication with formation fluids, wherein the flow line includes a first section comprising a first conductive area, a second section comprising a second conductive area, and an insulating section disposed between the first section and the second section to prevent direct electrical communication between the first section and the second section; a first toroid and a second toroid surrounding the flow line around the first section and the second section, respectively, wherein the first toroid is configured to induce an electrical current in a fluid in the flow line and the second toroid is configured to measure the electrical current induced in the fluid in the flow line; and an electronic package to control functions of the first toroid and the second toroid.

Abstract: A power connector for a printed circuit, the connector comprising: an insulating socket (14) provided with a bearing face (15) bearing on the printed circuit, and with a housing (16) associated with an opening (17) disposed laterally; a pin (18, 19) passing through the bearing face perpendicularly thereto and having a connection portion (22, 27) which extends projecting into the housing and presents two faces (23, 28) parallel to a plane perpendicular to the opening; an insulating support (31) arranged to be inserted at least in part in the housing through the opening; and at least one plug (34) secured to the insulating support and provided with two flexible tabs (35) for pressing against the faces of the connection portion of the pin.

Abstract: A method for determining a formation fluid property includes acquiring a suite of nuclear magnetic resonance (NMR) measurements of a fluid sample using a pulse sequence that includes pulsed field gradient pulses for encoding diffusion information, wherein each NMR measurement in the suite is acquired with a different value in a parameter in the pulsed field gradient pulses for producing a different diffusion effect, wherein the acquiring is performed in a formation fluid sampling tool in a borehole; inverting the suite of NMR measurements to produce a distribution function that relates diffusion properties of the fluid sample with an NMR property of the fluid sample; and determining the formation fluid property from the distribution function.

Abstract: A method for displaying a bottom-hole assembly together with a borehole trajectory includes displaying the borehole trajectory in a display window; and displaying the bottom-hole assembly in the display window such that the borehole trajectory and the bottom-hole assembly are in parallel and a measurement depth of the bottom-hole assembly corresponds to a measurement depth of the borehole trajectory.