Abstract: A system for storing and transmitting pulse count information is disclosed wherein electrical pulses produced by logging tools, such as thermal neutron, are counted and stored downhole to remove the effect of lengthly transmission lines. In a further embodiment a coded multiplexed signal is transmitted uphole indicating the tool from which the transmitted data was received and the total count for a predetermined time period.

Abstract: Pressure and velocity detectors produce outputs which are combined to substantially cancel ghost reflections. The pressure detector produces a positive output in response to upwardly travelling compressional waves and a negative output in response to downwardly travelling rarefaction waves. The velocity detector for this is a positive output in response to upwardly travelling compressional waves and a positive output in response to downwardly travelling rarefaction waves. These outputs are filtered so that the impulse response of the rarefaction waves cancels. The filtered outputs are combined to produce an output in which the ghost reflection is substantially suppressed.

Abstract: A method is described for making a fiber-reinforced composite film sheet (fiber/film laminate) by continuously forming a first planar lap from a plurality of machine-direction (MD) fibers, continuously forming a second planar lap from a single fiber as transverse-direction (TD) reaches which are connected by 180.degree. loops by stretching the fiber between a horizontally diverging pair of chain assemblies, continuously straddling both laps with a pair of co-extruded films which extend sidewardly beyond the loops, vertically converging the films and fibers to form a sandwich, edge sealing the sandwich within strips close to its side edges but inwardly of the loops, lifting the loops from the chain assemblies, sidewardly smoothing and tautening the sandwich, and laminating the sandwich with heat and pressure to form the composite film sheet and application for carrying out this method.

Abstract: Apparatus for orienting a mailable film comprising means for pulling the film through at least one pair of multi-directional orientation rollers having helical grooves thereby imparting a random multi-directional orientation to the film.

Abstract: A geophone is hung from a ball bearing in a pendular fashion so that it is free to swing in any direction. Because it is weighted, it will assume the correct positioning for operation. A clamp, carried with the pendular geophone in a seismometer designed for use on the ocean floor, fixes the geophone in a rigid position when a solenoid is actuated. After the seismometer is deployed on the sea bottom, it is desired to clamp the geophone into its assumed position. The solenoid is fired upon command causing the ball to be clamped. When the seismometer is recovered the angle of inclination with respect to the vertical it assumed at the time when the geophone was clamped can be determined by measuring the angle formed by the clamped geophone and a surface known to be vertical when the seismometer rests on a flat, horizontal surface.

Abstract: In an on-bottom seismometer, the electronic system for operating the release mechanism includes a plurality of independent power sources. A plurality of release condition sensors each produce a release output upon the occurrence of a condition in which the unit is to be recovered at the water's surface. Logic circuitry responds to the release condition sensors for producing a relase signal which is applied to driving circuits for primary and secondary release devices. Switching means automatically connect the logic circuitry and the driving circuitry to an operable one of the power sources.

Abstract: An electrode for use in telluric electrical energy measurements is disclosed which has the property of easy, rapid installation and retrieval while maintaining electrical stability. The electrode is durable and much more easily stored than prior art telluric electrical survey electrodes.

Abstract: A method is described for making a fiber-reinforced composite film sheet (fiber/film laminate) by continuously forming a first planar lap from a plurality of machine-direction (MD) fibers, continuously forming a second planar lap from a single fiber as transverse-direction (TD) reaches which are connected by 180.degree. loops by stretching the fiber between a horizontally diverging pair of chain assemblies, continuously straddling both laps with a pair of co-extruded films which extend sidewardly beyond the loops, vertically converging the films and fibers to form a sandwich, edge sealing the sandwich within strips close to its side edges but inwardly of the loops, lifting the loops from the chain assemblies, sidewardly smoothing and tautening the sandwich, and laminating the sandwich with heat and pressure to form the composite film sheet.

Abstract: An apparatus is disclosed wherein oppositely threaded, dissimilar coarseners threads are provided to receive couplings having tapered splined ends.

Abstract: An interlock system is provided wherein access to a test area containing radioactive material is prevented when testing is initiated and generation of harmful rays is prevented when access to the test area is gained during tests.

Abstract: A real-time monitor which displays analog representations of digital seismic data having been recorded on magnetic tape such that adjacent seismic traces are partially overlapped, whereby the appearance of an error is enhanced and is disclosed. The monitor display is controlled by a computer which may be of a type similar to computers used in the seismic data storage system for other purposes so that it may serve as a back-up computer. This system is implemented by incorporating into magnetic tape data storage drives read-after-write circuitry so that the data put on the tape can be read off the tape immediately thereafter and used to control the monitor means. In this way, the monitor is in fact operating in real-time and operates on precisely that data which in on the tape; thus any errors displayed on the real-time monitor include any errors made in the actual recordation of the data onto magnetic tape.

Abstract: A method for removing the effects of said subsurface anomalies in magnetotelluric survey data is disclosed wherein resistivity curves are compared and a correction factor is determined. Resistivity curves having a deviation from a mean are multiplied by this correction factor.

Abstract: A system is described for indicating the appropriate time to perform preventive maintenance operations upon a machine tool. The system includes a signal generator which is to be connected to the machine tool to generate signals whenever the tool is in operation. These signals are integrated and a threshold sensitive detector responsive to the output of the integrator produces a control signal. The control signal is then applied to a audio/visual indicating means to notify operators of the advent of a particular preventive maintenance operation to be performed upon the machine tool.

Abstract: A flexible pipe comprising a first set of stress bearing elements extending substantially the whole length of the pipe, for accommodating maximum hoop stress resulting from flow of pressurized fluid through the pipe, and a second set of stress bearing elements extending substantially the whole length of the pipe for accommodating longitudinal stress resulting from a flow of pressurized fluid through the pipe.

Abstract: A method and system are described for determining the dip of subsurface formations penetrated by a borehole. The well is logged using a borehole tool that has at least three antennas spaced approximately equally around the borehole tool for transmitting electromagnetic energy into the earth and receiving electromagnetic energy therefrom. Each antenna array contains a single transmitting antenna and a single receiving antenna. Individual signals are generated representative of the characteristics of the electromagnetic energy detected by each individual receiving antenna. These signals are then compared one to the other to determine the dip of the subsurface formations penetrated by the borehole.

Abstract: A hydraulic interlock system is disclosed wherein several pumps may be used to activate a plurality of hydraulic circuits while preventing activation of a single hydraulic circuit by more than one pump simultaneously.

Abstract: An electronic circuit which operates as a phase shifter is disclosed which uses a phase inversion principle. The circuit is broadband and may be either manually or electronically operated.

Abstract: This specification discloses a system and method for processing deconvolved seismic traces to compensate for phase distortion introduced in deconvolving the traces. The method provides for automatically processing the traces in an automatic data processing machine. A filter is generated from the signal pulse of the seismic energy applied to the earth in obtaining the seismic traces and this filter is applied to the deconvolved seismic traces to phase correct the traces.

Abstract: A method for determination of pyrite and sidermite content in core samples is disclosed wherein the method involves a two-step digestion of the minerals in hydrochloric and nitric acids and analysis of the solutions using an inductively coupled plasma atomic emission spectrometer.

Abstract: A seismic data generation and collection system is described for use in a exploration vessel for determining the subsea structure of the earth. A plurality of acoustic energy sources are towed behind the boat and acoustic waves are emitted therefrom by conventional means. The reflection at the subsea interfaces of the acoustic waves are picked up by the energy detectors which produce analog signals. These analog signals are then converted to digital data; multiple computers are used to reformat the data into a desired format. A real time monitor computer and monitor plotter may also be provided to assist the operator in evaluation of the operation of the system. The desired record format includes header information relating to the parameters under which the seismic shot was made, which may be written directly onto the magnetic tape containing the seismic data.