Resources Contact Us Home
Methods for calibration of pulsed neutron logging

Image Number 3 for United States Patent #8129673.

A method for logging a subsurface formation includes acquiring neutron capture data using a pulsed neutron tool at a plurality of locations along a borehole penetrating the subsurface formation, wherein the plurality of locations include a formation zone that contains water; comparing an apparent water salinity or an apparent water sigma value estimated from the neutron capture data acquired in the formation zone that contains water with a water salinity or water sigma value of a water sample from the subsurface formation to produce a calibration parameter for the neutron capture data; and correcting the neutron capture data, based on the calibration parameter, to produce corrected neutron capture data. The method may further include determining a water saturation from the corrected neutron capture data.

  Recently Added Patents
Vehicle headlight
Hydrothermal synthesis of nanocubes of sillenite type compounds for photovoltaic applications and solar energy conversion of carbon dioxide to fuels
System and method for outputting virtual textures in electronic devices
System and method for providing security in browser-based access to smart cards
Remote management of networked systems using secure modular platform
Device to control force required to depress accelerator pedal
  Randomly Featured Patents
Polycarbosilane, process for its production, and its use as material for producing silicon carbide fibers
Cutting tool angle adjustment method
Reinforced-resin coated plant food granules
Electronic safe/arm system and methods of use thereof
Report searching in a merger and acquisition environment
Machining station for a production line for optical fiber cable elements
Waste line stoppage detector and automatic water shutoff system
Webbing lock mechanism
Temporary image receptor and means for chemical modification of release surfaces on a temporary image receptor
Pump body with plunger pistons