Technical

Fishing with Junk Subs Junk subs are constructed with rib guides which are welded to…

Mechanical Sticking (cause of stuck pipe) Mechanical sticking occurs as a result of one or…

Hole Cleaning The following are possible indicators of hole cleaning problems: excessive overpull on connections…

Miscellaneous Fishing Tools This article describes the following fishing tools: Magnets,  Lead Impression Blocks, Rope…

Stuck Pipe Prevention Good drilling practices, particularly with regard to circulating and tripping activities, can…

Fishing with Washover Strings Washover strings can be used when: the formation has bridged off…

Fishing in slim hole wells  With improved equipment and operating practices, downhole failures have decreased…

Internal gravel packing procedures Examples of internal gravel packing procedures are given below. These programmes…

External gravel packing procedures – Conventional gravel packing This article describes the procedure for conventional…

Sampling analysis procedure – sand control This article describes the sampling analysis procedure for sand…