Leak Off Test Procedure

A Leak-Off Test LOT will be performed On Wild-Cat wells at each casing shoe after setting the surface casing. LOTs are also recommended to be carried out on both appraisal and development wells. Leak Off Test and Formation Integrity Test FIT , also termed the Limit Test, are for formation strength pressure tests made just below the casing seat prior to drilling ahead. Investigate the cement seal around the casing shoe which should be at least as high as the predicted fracture pressure for the...

Running The Bop And Riser

Before running the BOP stack check the weather forecast and refer to the 'Rig Operations' manual for the maximum vessel motion heave, roll and pitch for running BOP. Running procedures vary from rig to rig due to the specific design of the stack and to the handling system gantry cranes, fork lifts, trolleys, etc. used for moving the BOP in and out of the moonpool area. There are also a variety of ways to land the BOP stack. For this reason provision of detailed procedures is not possible...

Conductor Pipe Connections

Conductor pipe joints installed on land rigs, are usually connected by welding bevelled prepared ends of the pipes together. This is a time consuming operation that requires an average of three hours per joint. On a Jack-up, to reduce the time of the operations and when it is practicable, driveable threaded quick connectors i.e. the RL-4 and driveable squnch joint connectors such as the Fast Realising Joint i.e. the ALT-2 , should be used. a A Squnch Joint Refer to figure 4.c is a threadless...