Tag Archives: Wait and Weight

Fill in the blank: Wait and Weight (Engineer’s method) is a well killing method that requires only ____ completion circulation.

Who is responsible for actually closing the blow out preventers and shutting the well in?

Which one is NOT the correct statement for wait and weight well control method?

If a drillpipe float is installed in the drillstring, the pressure gauge on the drillpipe will probably show zero. In order to get shut-in drillpipe pressure, what action should be performed?

What is the advantage of Wait and Weight well control method?

Fill in the blank: As the gas in the mud is circulated to the surface, the gas will begin to ___ resulting in ____ both the pressure and pit volume.

The following table shows sample drillpipe pressure schedule for the wait and weight method:

From the following, which is the correct statement about the above table?

From the following list, which parameter is not known prior to the kick while a well is being drilled?

What is the disadvantage of Wait and Weight well control method?

Well is drilled to 10,000’MD/9,000’TVD. The well is shut in due to well control. The float is bump and SIDP is 500 psi. The current mud weight is 9.5 ppg.

What is kill weight mud?

Initial circulating pressure at 30 spm is 1,500 psi. Shut in drill pipe pressure is 500 psi with 9.5 ppg current mud weight. The required kill weight mud is 11.0 ppg. What is the Final Circulating Pressure (FCP)?

When you bring the pump up to speed for wait and weight well control, which pressure do you need to maintain constant?

If the pre-recorded slow circulating pressure at various rates are unavailable for some reasons, the initial circulating pressure can be determined by proceeding the following action:

The casing shoe has quite low Leak off pressure. Which well control method should you use for kill the well safety and minimize the broken u-tube?

If the initial circulating pressure = 600 psi, Final circulating pressure is 400 psi and total internal capacity is 800 strokes (surface to bit) then what will be drillpipe pressure drop (per stroke) ?

Drill pipe pressure schedule is quite straight forward for straight hole with non-taper string. However, if the well is a deviated well and/or taper string, the drill pipe pressure schedule is quite complex. It is quite difficult to figure it out by hand for this case. Is this statement correct?

The well is shut in and SIDP is 600 psi. The current mud weight is 13.0 ppg and the present depth is 9,500’MD/9,000’TVD. What is the reservoir pressure?

The current mud weight is 9.2 ppg and the kill weight mud required is 10.0 ppg. The overall volume to weight up is 500 bbl. How much barite do you require to weight up the system?

The current mud weight is 9.2 ppg and the kill weight mud required is 10.0 ppg. The overall volume to weight up is 500 bbl. How much is the volume increase in the system?

Initial circulating pressure = 900 psi and final circulating pressure is 400 psi. Total internal capacity from surface to bit = 900 strokes. What is the drillpipe pressure drop per 200 stroke increment?