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HANDLING AND Operating Suggestions Casing & Tubing Casing & Tubing 

 

Casing & Tubing PREPARATION

 

  API-5CT Casing & Tubing pipe, Coupling, OCTG.

  manufacture Casing & Tubing pipe, OCTG for oilfield:

 API SPEC 5CT.

 grade: J55, K55, L80, N80, C95, P110

Casing & Tubing pipe:  7" to 13 3/8"

 : BTC, LTC, STC.

Length  : R1, R2, R3

 

 

Take away pin and box protectors from Casing & Tubing tubing and accessory pieces, and thoroughly clean the connections, removing all previously applied thread or storage compound.

Inspect all connections, specifically noting any mechanical harm towards the threads.While minor corrosion damage is of small concern, mechanical harm of the threads can bring about failures in service. If a connection is damaged or questionable, it should be laid aside.

When inspecting box connections, check to view that the couplings are produced up power tight. On pup joints and accessories, the couplings might be only spun on by hand, and might not have thread compound applied to the connection surfaces. On round thread connections, there should be no pin threads extending beyond the coupling face.

All Casing & Tubing joints and accessory pieces ought to be drifted full-length having a normal API drift mandrel, in the box end towards the pin end.When it is preferable to drift the Casing & Tubing around the racks, a rabbit may perhaps be applied as an alternative because the Casing & Tubing is pulled up by means of the V-door.

Using the thread protectors removed and the connections cleaned, tally the Casing & Tubing by measuring in the face with the coupling to the point around the pin connection where the coupling stops when the connection is assembled power tight.The distance from the pin nose to this point is known as the “make-up loss”. Alternately, the total length in the joint is often measured, plus the make-up loss subtracted in the all round length.Tallies really should be produced for the nearest 0.01m.

The cleaning, inspection and tallying operations are repeated as every single tier of Casing & Tubing is uncovered.

 

Just before the Casing & Tubing is moved for the catwalk, clean thread compound ought to be applied, and thread protectors must be replaced. Unless specified otherwise, API 5A2 kind thread compounds must be utilized. Fresh compound really should be utilised, the applicator brush should be clean and absolutely free of any debris, compound has to be mixed nicely and never thinned.

Note that certain service applications (heavy oil thermal or extremely high stress) could call for use of a distinct compound. In no occasion are rotary shoulder (drill pipe or drill collar) compounds to be utilized.

When moving pipe in the racks for the catwalk, guarantee that joints aren't dropped or allowed to hit against other Casing & Tubing or rig equipment.Casing & Tubing should be pulled up to the V-door with a choker, then elevators utilized to pull the Casing & Tubing joint into the derrick.Thread protectors must be in spot on both pin and box connections any time the pipe or accessories are moved.

If it's impractical to replace all thread protectors, several is usually cleaned and applied repeatedly, being installed on the pipe rack and removed from the Casing & Tubing when hung in the derrick.

If a mixed string will be to be run (greater than a single grade and/or weight), guarantee that sufficient pipe of your essential sort is offered, and that it truly is laid out on the racks to ensure that it will be accessible when named for inside the plan.