Depthometer:

Terms Related to Depthometer

• Depth reference

  The point in a well from which depth is measured. Alternatively, the depth reference is the point at which the depth is defined as being ...

• Free-point indicator

  A device run on wireline into the wellbore and inside the fishing string and fish to locate the area where a fish is stuck. When ...

• Collar locator

  A logging device used to determine accurately the depth of a well; the log measures and records the depth of each casing collar, or coupling, ...

• Driller’s depth

  The depth of a well or features within the wellbore as measured while drilling. The measured length of each joint of drillpipe or tubing is added ...

• Measure out

  To measure drill pipe or tubing as it is pulled out of the hole, usually to determine the depth of the well or the depth ...

• Perforation depth control log (pdc log)

  A special type of nuclear log that measures the depth of each casing collar. Knowing the depth of the collars makes it easy to determine ...

• Wheel-type back-off wrench

  A wheel-shaped wrench that is attached to the sucker rod string at the surface and is manually turned to unscrew the string to allow it ...