Stuck Pipe

Changing a Bottom Hole Assembly To avoid problems with under gauge hole and BHA changes…

Fishing Planning and Preparation When equipment has been lost or is stuck in the hole,…

Effective Pull On Stuck Pipe The first actions taken when the drillstring becomes stuck have…

Differential Sticking (Cause of Stuck Pipe) In normal overbalanced drilling conditions, a pressure differential exists…

Back-Off Procedures Conditions for a successful back-off: a) The string shot strength should be sufficient…

Lost Sidewall Sample Bullets In case of lost Sidewall Sample Bullets, the following guidelines should…

Backing off Procedures The string shot size shall be determined by the Logging Engineer so…

Formation Instability When dealing with areas of formation instability it is necessary to: – trip…

Pulling Stuck Pipe Prior to pulling stuck drill pipe or stuck casing, carry out the…

Chemical Cutters for Stuck Tubing or Drillpipe The chemical cutter is a tool designed to…