Research On Through Casing Measurement&Control System And Method For Processing Data

Several large domestic oil fields after years of production are entering a period of high water extraction stage,Many oil companies use various measures to tap the potential of oil fields and to ensure the overall oil recovery.As the recent rapid development of technology through casing resistivity logging,it can measure the formation resistivity of layer around the casing reliably.Through Cased Hole Resistivity Logging can detect the potential difference of the formation around the tube through the high power square wave current injection by the feeding electrode,when current flowing through the tube portion of the current leak into the formation,use detecting data to determine the resistivity of the casing layer field.This paper include the principles of CHFR logging,analyze the CHFR instrument and ЭКОС-31-7 instrument,propose the design of ground system for the instrument by laboratory.The paper also describes the details of the control management software design and development,and propose the method of the features of casing resistivity logging tool data.At last the paper analysis the data after calibration and the Instrument combined test,By analyzing the experimental data obtained experimentally derived PC program meet the design requirements,the data pretreatment method is appropriate concludes with the work’s improving direction in the future.