Post Shut-In Procedures While Tripping -What data should be recorded?

After you complete shut in procedure while tripping, there is following information that must be recorded before making any decision on how to kill the well.

tripping

Shut-In Casing Pressure (SICP): Read and record the shut-in casing pressure (casing gauge).

In order to get the proper pressure reading, the casing gauge should be installed upstream of the closed choke.

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Shut-In Procedure while Tripping

Tripping out of the hole is a critical operation, which drilling team must keep close eye on well control situation that can occur anytime. Wellbore monitoring and hole filling equipment and must be working properly so that the kick can be quickly detected. You must be aware of and prepared for the well control situation every tripping operation.

While tripping, it can cause swabbing effect that may allow formation fluid entering into wellbore. The well may not start to flow since the swabbing effect is just started. The swabbing effect will result in reducing the overall hydrostatic pressure. If the well is continually swabbed-in until the hydrostatic pressure in the wellbore less than formation pressure, the well will start flowing. Any time that you see short fill while tripping out, you need to go back to bottom and circulate bottom up to confirm wellbore condition.

When the well control situation is happened during tripping operation, the drilling crew must shut the well in right away using the following “3 S” shut-in procedures.

Stab Valve: Install Full-Open Safety Valve (FOSV) that must be in an open position in drill string. Make up to drilling string and close the safety valve.

Space Out: Space out to ensure that tool joint must no locate in BOP element.

Shut-in well: Close the annular preventer or uppermost pipe rams. Open the upper choke line valve against a fully closed manifold valve at a choke manifold. Line up to trip tank to confirm that the well is shut-in and flow has been stopped.

References

Cormack, D. (2007). An introduction to well control calculations for drilling operations. 1st ed. Texas: Springer.

Crumpton, H. (2010). Well Control for Completions and Interventions. 1st ed. Texas: Gulf Publishing.

Grace, R. (2003). Blowout and well control handbook [recurso electrónico]. 1st ed. Paises Bajos: Gulf Professional Pub.

Grace, R. and Cudd, B. (1994). Advanced blowout & well control. 1st ed. Houston: Gulf Publishing Company.

Watson, D., Brittenham, T. and Moore, P. (2003). Advanced well control. 1st ed. Richardson, Tex.: Society of Petroleum Engineers.

Post Shut-In Procedures while Drilling

There are several figures that must be recorded after the well has been properly shut in in case of a well control situation.

 

Shut-In Casing Pressure (SICP): Read and record the shut-in casing pressure (casing gauge).

In order to get the proper pressure reading, the casing gauge should be installed upstream of the closed choke.

Continue reading

Shut-In Procedure while Drilling

While drilling, a drilling team must be carefully check for well control indicators and if the positive kick indicator(s) indicated, crew must instantly know how to shut in the well in correct manner. The steps below, called “3S” shut-in procedures, demonstrate how to properly shut the well in while drilling.

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2 Types of Shut-In (Hard Shut In and Soft Shut In)

For the drilling industry especially when we talk about well control, there are 2 types of shut in which are Hard Shut-in and Soft Shut-in.  This post will describe both shut in types and I wish I would be helpful for you all 🙂

Hard shut in: It means that while drilling choke line valves (HCR) are in the closed position; it will be opened after the well is shut in. The hard shut-in is the fastest method to shut in the well; therefore, it will minimize volume of kick allowed into wellbore.

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