Page 137 - Standard Handbook Petroleum Natural Gas Engineering VOLUME2
P. 137
fluid loss before packer Is Leak in drillpipe. Note the high
set. Pressure declines during lnltlal pressure when tool was Rrrt
delays while going in hole. opened. Recovered considerable
fluid level in annulus drops. mud and reduced amount of msemir
fluld either fiows Into formation RUMS becaw of mud cauwd back
or Mo drillpipe. Tha DST may be pressurn.
normal In all respec&.
P
Effect of small water cushion. Effect of rough seas. My high w
c.
War cushbn raised the initial seas on a rroatikg vessel causes
pressure at start of Row. Recov- stylus to vibrate hm action of 8
ery includes water cushion and krmper bars. Movement of the boat
may even release and reset packers.
resetvoir fluids with amount de- The DST may be normal in all respects Il
pendent upon cushions, character-
istic of formation and fluids, other than the jagged charts. E
surface operations, etc.
Figure 5-63.
