Absence of air in well holes eliminate change in pressure?

[ahmed11]

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?

 

[davenn]

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

 

[sophiecentaur]

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?

 

[256bits]

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.

 

[Chestermiller]

Wasn't this exact same question asked about 3 months ago, and fully dealt with?
https://www.physicsforums.com/threa...drilling-hole-completely.858688/#post-5389979

 

[davenn]

Wasn't this exact same question asked about 3 months ago, and fully dealt with?
https://www.physicsforums.com/threa...drilling-hole-completely.858688/#post-5389979

ohhh wow
that explains the deja-vu feeling