Resources Contact Us Home
Well log processing technique

Image Number 17 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 bonding metallic members, and metallic bonded body
DRAM refresh method and system
Data recording apparatus with recording control based on defect block and control method thereof
Method and apparatus for communication channel error rate estimation
Method for installing industrial components in an environment
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Method of allocating IP address of image forming apparatus using DHCP, image forming apparatus and system of allocating IP address using DHCP
  Randomly Featured Patents
Solid state programmable intervalometer
Pendant or similar article
Process and device for converting a periodic LF electric voltage into sound waves
Transcutaneous analyte sensor
Fuel injection control system for internal combustion engines
Palm grip random orbit sander with lower housing and dust collector coupled to lower housing
Resuscitation valve assembly
Switch device with a trouble detecting and indicating function
Antibodies to chemokine receptor 88C
Conditional-carry adder for multibit digital computer