Patents Assigned to inApril AS
  • Method for correction of clock drift in seismic nodes, a seismic node and a seismic node handling system
    Patent number: 11719839
    Abstract: A method of correcting clock drift in at least one slave clock in a seismic node. The method comprises obtaining a number of clock drift measurements of the at least one slave clock in the at least one seismic node. A clock drift correction function as a function of time is calculated by curve fitting the number of clock drift measurements to a 2nd order polynomial. A time of reference of the recorded seismic sensor data is corrected by the 2nd order polynomial clock drift correction function.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: August 8, 2023
    Assignee: INAPRIL AS
    Inventor: Oistein Aanensen
  • Node handling device
    Patent number: 10754052
    Abstract: It is described a node handling device for use during deployment or retrieval of a plurality of seismic nodes (10) attacked to a cable (8), the node handling device comprising: a wheel device (1) adapted for damping of the cable (8) with attached seismic nodes (10) during deployment or retrieval. A wheel device and a method for deployment or retrieval are also disclosed.
    Type: Grant
    Filed: April 6, 2016
    Date of Patent: August 25, 2020
    Assignee: INAPRIL AS
    Inventors: Vidar Hovland, Ragnar Langåker, Jan Roar Storesund
  • Device for attaching a seismic node to a cable, a seismic node, as well as methods for deployment and retrieval of seismic nodes attached to a cable
    Patent number: 10288750
    Abstract: It is described an attachment device (2) for attaching a seismic node to a cable (1), the attachment device comprising an in-line fastening device (6) fastening the cable (1); and at least one locking device (3) securing the cable (1) in the at least one in-line fastening device (6). The locking device (3) prevents the cable (1) from escaping the fastening device (6). A seismic node and a method for deployment and retrieval of a number of seismic nodes are also described.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: May 14, 2019
    Assignee: INAPRIL AS
    Inventors: Vidar Hovland, Malte Svensson, Vidar Pedersen
  • NODE HANDLING DEVICE
    Publication number: 20180120462
    Abstract: It is described a node handling device for use during deployment or retrieval of a plurality of seismic nodes (10) attacked to a cable (8), the node handling device comprising: a wheel device (1) adapted for damping of the cable (8) with attached seismic nodes (10) during deployment or retrieval. A wheel device and a method for deployment or retrieval are also disclosed.
    Type: Application
    Filed: April 6, 2016
    Publication date: May 3, 2018
    Applicant: inApril AS
    Inventors: Vidar HOVLAND, Ragnar LANGÅKER, Jan Roar STORESUND