Title: High resolution ratio static natural potential well logging instrument and its measuring method
Application Number: 200510137478 Application Date: 2005.12.30
Publication Number: 1794013 Publication Date: 2006.06.28
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01V3/18,E21B47/00
Applicant(s) Name: Nie Guozhu Address: 102200
Inventor(s) Name:
Attorney & Agent: yang fei huang wei
Abstract:
     A well detector of high resolution in static natural potential consists of SSP electrode system formed by nine electrode rings set symmetrically on a insulated bar as their various the same name electrodes, Mo electrode and N electrode being connected to measuring circuit by wire; measuring circuit for providing current between A1 electrode and A2 electrode according to △Vm size to make △Vm nearly to be zero and calculating out value of stratum static natural potential when △Vm is near zero.
Time: 8
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