All about Density Log; an Important Cased-Hole logging Tool

<p style&equals;"text-align&colon; justify&semi;">Well&comma; logging is a continuous recording of geophysical properties in the borehole&comma; where the value of the measurement is continuously plotted against the depth of the wellbore&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">It helps in the investigation of the underground materials&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Well logging is the essential part for oil and gas industry&period; It provides complete information related to the physical and chemical properties of underground fluid or rocks&period; It is divided into two parts that are open-hole logging and cased-hole logging to get the complete knowledge on well formation or integrity&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Open-hole logging is done before the completion of the wellbore&semi; it helps you to dig a precise and wellhole that help you completely in your motive&period; However&comma; cased-hole logging helps you with the casing of well&comma; measuring the properties of fluid like density&comma; porosity&comma; conduction&comma; etc&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Cased-hole logging tools provide the accurate and exact information of downhole activities that will help you in maintaining the well&period;<&sol;p>&NewLine;<h2 style&equals;"text-align&colon; justify&semi;">Density<&sol;h2>&NewLine;<hr &sol;>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Usually in moving down in depth the density increases and porosity decreases due to the rise in pressure at downhole&period; The density log can measure the electron density of the well formation and help in <a href&equals;"https&colon;&sol;&sol;renegadewls&period;com&sol;pipe-recovery&sol;" target&equals;"&lowbar;blank" rel&equals;"noopener">oilfield pipe recovery<&sol;a>&period; Density gives the information of material with which rock is formed&period; Also&comma; density is the primary indication of porosity&period; Density log is a source of gamma rays&comma; it emits these rays into them&comma; and they collide with electrons of the formation&period; At every collision&comma; gamma rays lose some energy to the neutrons&comma; and finally&comma; the scattered gamma ray reaches the detector and is counted as an indication of density&period; As the denser the formation&comma; the more neutrons are present at the detector&period;<&sol;p>&NewLine;<h2 style&equals;"text-align&colon; justify&semi;">Electrical resistivity<&sol;h2>&NewLine;<hr &sol;>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Electrical resistivity is the measure of abstraction to current flow&semi; it is opposite to the conductivity&period; Rock matrix does not conduct electricity&comma; although the little conductivity is due to the presence of fluid in them&period; Resistivity can be affected by porosity and lithology of formation in well&period; Resistivity measurement gives you the information about the saturation of hydrocarbons in the wellbore&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">To measure the resistivity&comma; a current is passed between the electrodes on the logging tool&comma; and the amount of potential difference between them provides the resistivity&period; As rock is non-conducting hence the value of conductivity is results of liquid pore space in the rocks&period; Therefore electrical resistivity also measures the porosity of formations&period;<&sol;p>&NewLine;<h2 style&equals;"text-align&colon; justify&semi;">Porosity<&sol;h2>&NewLine;<hr &sol;>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Porosity is the void in rocks as compared to total area of rocks&period; Cased-hole porosity log helps you to determine the porous property of well formation and mud&period; High range of porosity indicates that rocks may have more liquid which can be useful and hence give rise to your oilfield business&period; There are three types of porosity logs like sonic&comma; neutron and density log that will help you to measure the porosity in down hole&period; The density and neutron logs use nuclear theory for measurement&period;<&sol;p>&NewLine;<p style&equals;"text-align&colon; justify&semi;">Lower down the tools with wire line services into the testing area&comma; and recognize the above mention properties of fluid as well as of well formations&period; All these properties will help you to judge the area for drill the borehole for oilfield or <a href&equals;"http&colon;&sol;&sol;www&period;discussbuzz&period;com&sol;how-do-wirelines-slicklines-works&sol;" target&equals;"&lowbar;blank" rel&equals;"noopener">wireline work<&sol;a>&period; If you feel that you are not able to perform the logging task by yourself&comma; then you may hire the expert professionals&comma; as they are expert in handling measuring and logging tools&period; Proper inspection and maintenance of well bore provides you good well and also increase its lifetime with production&period; Directly or indirectly it will be a great benefit for your business&period;<&sol;p>&NewLine;