Cavernous formation:

See vug.

Terms Related to Cavernous formation

• Formation

  A bed or deposit composed throughout of substantially the same kind of rock; often a lithologic unit. Each formation is given a name, frequently as ...

• Openhole

  The uncased portion of a well. All wells, at least when first drilled, have openhole sections that the well planner must contend with. Prior to ...

• Wireline formation tester

  A formation fluid sampling device, actually run on conductor line rather than wireline, that also logs flow and shut-in pressure in rock near the borehole. ...

• Skin

  1. The area of the formation that is damaged because of the invasion of foreign substances into the exposed section of the formation adjacent to ...

• Fast formation

  A formation where the velocity of the compressional wave traveling through the borehole fluid is less than the velocity of the shear wave through the ...

• Formation fluid

  Fluid (such as gas, oil, or water) that exists in a subsurface rock formation.

• Slow formation

  A formation in which the velocity of the compressional wave traveling through the borehole fluid is greater than the velocity of the shear wave through ...