Mud Logging Equipment Named Shale Density Meter

Operating principle

Measuring mudstone density is to monitor abnormal pressure formation. According to the
regulation of mudstone compaction, the porosity of mudstone decrease in exponential function
way when the depth are increasing in normal condition, mudstone density increases with the
increase of depth. When meeting pressure transition zone and high pressure layer that would
cause under compaction, the porosity would higher and density would lower than normal
condition. Because the density of mudstone has that change regulation, it can be measured by
mudstone debris which digs from underground by designed well height. Setting normal pressure
formation's mudstone density curve as base line, other lines which are excursion form this base
line will be seemed as pressure abnormal. The higher excursions that curve have, the higher
abnormal pressure the layer gets. The start point of excursion is the peak point of transition zone.
Apparatus composition
Organic-glass cylindrical, mirror diagraph, fixed frame, stainless steel and top tray, floater,
hammer for calm and zero knob etc

Specification

 Measurement Range:1-3g/cm3
 Minimum sample weight: 0.05g
Resolution: 0.03g/cm3