Absence of air in well holes eliminate change in pressure?

AI Thread Summary
Sucking air out of an oil well after drilling a few feet and sealing it may not effectively eliminate pressure changes or prevent kicks due to the inability to create a complete vacuum. The hydrostatic pressure at significant depths remains largely unaffected by minor reductions in pressure at the surface. A kick can occur when drilling through varying rock densities, leading to sudden pressure increases that can damage equipment. The discussion references a similar question previously addressed, indicating ongoing interest in the mechanics of well pressure management. Understanding these dynamics is crucial for safe drilling operations.
ahmed11
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if i sucked air out of an oil well after drilling a few feet and closed the hole by any means and continued drilling without allowing air in, will that eliminate change in influx and won't result in a kick?
or because i can't suck air completely out so the delta p will be really high?
 
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ahmed11 said:
if i sucked air out of an oil well after drilling a few feet and closed the hole by any means and continued drilling without allowing air in, will that eliminate change in influx and won't result in a kick?

hi there
trying to make sense of that ? specially this bit
what influx of what ? what kick ?Dave
 
ahmed11 said:
if i sucked air out of an oil well after drilling a few feet and closed the hole by any means and continued drilling without allowing air in, will that eliminate change in influx and won't result in a kick?
or because i can't suck air completely out so the delta p will be really high?
The hydrostatic pressure at the enormous depths of an oil well wouldn't be affected much by reducing the pressure of air in the top of a bore by just one Atmosphere (which is as much as you can 'suck').
I think that's what you are talking about?
 
davenn said:
hi there
trying to make sense of that ? specially this bit
what influx of what ? what kick ?


Dave
Infux - I don't know.
kick - a pressure transient from the way down at the drill head. Can blow your pipes. I think it comes from plowing (drilling) through changes in porosities ( and densities I guess ) of rock. For example, more porous and the fluid inflow way down under ( maybe that is the influx ) can suddently increase the pressure at the bit and the pressure wave travels up the line to you and your machineray at the surface, and possibly up and down a few time before it dissipates. Probably more complicated that that.
 

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