Caliper:

Terms Related to Caliper

• Caliper log

  1. A record showing variations in wellbore diameter by depth, indicating undue enlargement due to caving in, washing, or other causes. The caliper log also ...

• Resistivity meter

  An instrument for measuring the resistivity of drilling fluids and their cakes.

• Stormer viscometer

  A rotational shear viscometer used for measuring the viscosity and gel strength of drilling fluids. This instrument has been largely superseded by the direct-indicating viscometer.

• Pressure gauge

  An instrument that measures fluid pressure and usually registers the difference between atmospheric pressure and the pressure of the fluid by indicating the effect of ...

• Jackup drilling rig

  A mobile bottom-supported offshore drilling structure with columnar or open-truss legs that support the deck and hull. When positioned over the drilling site, the bottoms ...

• Cementing

  1. The application of a liquid slurry of cement and water to various points inside or outside the casing. 2. To prepare and pump cement ...

• No-go

  A gauge run downhole to verify dimensions.