Paper Information

Title:  APPLYING FREQUENCY BEHAVIOR OF ONLY NEUTREON POROSITY LOG TO DETECT FORMATIONS; CASE STUDY: CLIFFHEAD SHALE ZONE, WEST OF AUSTRALIA
Type: PAPER
Author(s): MAJLESI KOUPAEI MOHAMMAD JAVAD*,TOKHMECHI BEHZAD,REZAEE MOHAMMAD REZA,FATHIANPOUR NADER,JOODI MOHAMMAD
 
 *MINING, PETROLEUM AND GEOPHYSICS DEPARTMENT, SHAHROOD UNIVERSITY OF TECHNOLOGY
 
Name of Seminar: INTERNATIONAL CONFERENCE OIL, GAS, PETROCHEMICAL AND POWER PLANT
Type of Seminar:  CONFERENCE
Sponsor:  SHERKATE TAVONI AMOZESHI PAZHOHESHI VESTA
Date:  2012Volume 1
 
 
Abstract: 

ONE OF THE VERY FIRST STEPS IN PETRO PHYSICAL WELL LOG PROCESSING TO DISTINGUISH RESERVOIR FEATURES IS FORMATION DETECTION FOR FINDING HOMOGENEOUS ZONES; THERE ARE VARIETIES OF METHODS WHICH APPLYING PETRO PHYSICAL LOGS TO FIND FORMATIONS SEPARATION INTERVALS; BY GROWING TIME WELL LOGGING TOOLS AND COMPUTERS ADVANCES MAKES IT EASY TO DETECT FORMATIONS IN MANY MATHEMATICAL DIMENSION SPACES. IT'S SO SIMPLY TO SAY USING HIGH DIMENSION SPACES TO SOLVE THE PROBLEM HAVE ENOUGH PROFITS, ON THE OTHER HAND, IT HAS SOME IMPORTANT PROBLEMS SUCH AS LESS CALCULATION PROFIT OR TIME CONSUMING CALCULATIONS; IN ADDITION, LACKING OF DATA IS THE OTHER PROBLEM. IN THIS ARTICLE, IT'S TRIED TO SOLVE FORMATION DETECTION PROBLEM USING ONLY ONE LOG, IN ONE DIMENSIONAL MATH SPACE, BY APPLYING CONTINUOUS WAVELET TRANSFORM. NEUTRON POROSITY LOG PRIMARILY IS A FUNCTION OF POROSITY AND SECONDLY IS FUNCTION OF LITHOLOGY, SO, THAT'S WHY NEUTRON POROSITY LOG IS IMPLIED HERE. THE CASE STUDY OF THIS ARTICLE IS BASICALLY UPON WELL LOGS OF CLIFF HEAD 1, 2 AND 3 WHERE IS WEST OF AUSTRALIA PERTH REGION. THE ACHIEVED RESULT BY APPLYING CONTINUOUS WAVELET TRANSFORM ON NEUTRON POROSITY LOG WAS REALLY COMPARABLE WITH ANALYZED CORES AND CUTTING DATA, AND IT SHOWS AT LEAST 94% AGREEMENT ON EACH WELL WITH THEM WHICH PRESERVE ITS APPLICATION.

 
Keyword(s): CONTINUOUS WAVELET TRANSFORM [CWT], LAYAR DETECTION, MEXICAN HAT WAVELET, PETROPHYSICS, WELL LOGGING
 
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