2 results about "Geometric factor" patented technology

The present application relates to the technical field of well logging, and discloses a geometry factor adaptive array resistivity curve correction method, which comprises using resistivity data measured by array resistivity instrument in shallow detection and deep detection modes as estimated values of invasion zone resistivity and undisturbed formation resistivity, giving an invasion radius, calculating corresponding geometry factors, and obtaining theoretical resistivity data of different detection modes through an adaptive correction processing algorithm. The present application uses the geometry factor adaptive correction processing algorithm to calculate theoretical resistivity data of different radial detection depths as corrected resistivity data, which conforms to the ordering relationship of resistivity curves of different radial detection depths under the condition of mud invasion, effectively eliminates the resistivity disorder phenomenon caused by array resistivity measurement in complex well conditions, and thus provides more accurate resistivity information of different radial detection depths for well logging interpreters.

The invention relates to the technical field of well logging, and discloses a geometric factor adaptive array resistivity curve correction method, which comprises the following steps of: using resistivity data actually measured in shallow detection and deep detection modes of an array resistivity instrument as estimated values of intrusive zone resistivity and undisturbed formation resistivity, giving an intrusive radius, and correcting an intrusive zone resistivity curve according to the intrusive radius; and calculating corresponding geometric factors and obtaining theoretical resistivity data of different detection modes through an adaptive correction processing algorithm. According to the method, a geometric factor self-adaptive correction processing algorithm is utilized, theoretical resistivity data of different radial detection depths are obtained through calculation and serve as corrected resistivity data, and the resistivity data meet the sequencing relation of resistivity curves of different radial detection depths under the condition of mud invasion; the resistivity disorder phenomenon caused by the array resistivity measurement influence in the complex well condition is effectively eliminated, so that more accurate resistivity information of different radial detection depths is provided for well logging interpretation personnel.