RIGTRAlfM

KILL METHODS

□ rillinq S Well Services Train in g

The following two graphs depict pressure variations during the Wait and Weight method.

Graph 3

WAIT AND WEIGHT Start Of Kill

Gas Kick

Jus sterling kill mud fcwn drillpipe

WAIT AND WEIGHT B

Circulating Kill Mud Down

Drillpfpe pressure dropping from initial Circulating Pressure to ¡Final Circulating Pressure Casing Pressure rising very slowly (lillle gas expansion)

1^1 WAIT AND WEIGHT C

Kill Mud at Bit

Dnllpipepressure now steady all Final Circulating Pressure.

1^1 WAIT AND WEIGHT C

Kill Mud at Bit

Dnllpipepressure now steady all Final Circulating Pressure.

Cs Ss

WAIT AND WEIGHT

Gas at Surface

Casing Pressure al its maximum value

WAIT AND WEIGHT

Gas at Surface

Casing Pressure al its maximum value

WAIT AND WEIGHT E

Drill Pipe Contents at Surface

Small Casing Pressure still held - as light mud from drillpipe calculated out

WAIT AND WEIGHT E

Drill Pipe Contents at Surface

Small Casing Pressure still held - as light mud from drillpipe calculated out

WAIT AND WEfGHT (F Well Killed

Well clean up' takes some time, as a small residual Casing Pressure is likely

WAIT AND WEfGHT (F Well Killed

Well clean up' takes some time, as a small residual Casing Pressure is likely

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