Resources Contact Us Home
Well log processing technique

Image Number 2 for United States Patent #4320458.

An illustrative embodiment described herein discloses an automatic method of determining correlations between characteristic signal elements corresponding to common recognizable features represented by sampled signals. Specific types of characteristic elements are detected and their boundary positions and characteristic parameters recorded. These records are sorted according to predefined procedures employing relative positions of the boundaries. Efficient references are generated to provide search bounds and elements located above and below each boundary.Specified types of elements are selected in a given order to provide a desired type of correlation. Compatible types of elements occurring within predefined search bounds are located and compared to determine corresponding elements. The comparison employs the use of the previously recorded characteristic parameters. As the correspondents are found, the search bounds are modified accordingly to guide the procedure in location of subsequent elements. The modification of the search bounds updates the previous references. The search bounds used for locating and comparing subsequent elements are consequently restricted to prevent miscomparison.Use of boundary positions of the detected elements in the correlation process allows a natural determination of correlation and search intervals. Comparison of the characteristic parameters allows correlation of features of unequal length without the necessity of resampling or warping one or more of the signals.When the correlation method is applied to dipmeter signals used to determine dip and strike information on subsurface formations penetrated by an exploration borehole, the displacements calculated from the resulting correlations produce more reliable and more detailed information than customary correlation methods.

  Recently Added Patents
Method of producing probabilities of being a template shape
Remote management of networked systems using secure modular platform
Wideband multi-channel receiver with fixed-frequency notch filter for interference rejection
Therapeutic human anti-IL-1R1 monoclonal antibody
Exposure apparatus, exposure method, and device manufacturing method
Processing abstract derived entities defined in a data abstraction model
Semiconductor device and fabrication method
  Randomly Featured Patents
Slackened needle thread assuring unit
Aqueous flame retardant resin composition
Oil spill collection device
Combustion control system
Electron cyclotron resonance apparatus comprising wafer cooling pedestal
Combination scent-distributer/flashlight for a hunter
Push-to-talk handling in a dual processor environment
Magnetic record/reproduce head having improved service life, and new material therefor
Anti-inflammatory androstane derivative compositions
Multi-layer film with enhanced lamination bond strength