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UBD case study

Hi ,Gentlemen I would to ask you about something I don’t get clear answer about it:First thing:In case i have decrease in surface injection pressure while drilling so that due to totally loss in…Continue

Started Feb 24, 2013

pressure drop through drill bit

Hi every body,In UBD case when estimate the pressure drop cross the bit nozzles there are a formula by William lyons to find that but I need to ask that the V mix the specific weight of fluid mixture…Continue

Tags: bit, drill, through, drop, pressure

Started May 4, 2011

 

zattamimi's Page

Latest Activity

zattamimi commented on Rachain Jetjongjit's blog post Well Control Formulas
"But I found another Formula said that: Pbh = Mud hydrostatic + Annular fractional pressure + Choke pressure+Acceleration pressure"
Apr 12, 2013
zattamimi commented on Rachain Jetjongjit's blog post Well Control Formulas
"In UBD drilling is that : Pbh = Mud hydrostatic + Annular fractional pressure + Choke pressure. Correct ?"
Apr 12, 2013
zattamimi posted a discussion

UBD case study

Hi ,Gentlemen I would to ask you about something I don’t get clear answer about it:First thing:In case i have decrease in surface injection pressure while drilling so that due to totally loss in formation. If that is correct?Second thing:In case i have increase of surface pressure this is  due to hard formation. Regards.ZayedSee More
Feb 24, 2013
zattamimi's discussion was featured

The pressure drop through drill bit

Hi every body,In UBD case when estimate the pressure drop cross the bit nozzles there are a formula by William lyons to find that but I need to ask that the V mix the specific weight of fluid mixture under bottom-hole conditions (Ib/F^3) is any formula can I used to estimate this factor.My case UBD: water base mud + AirRegards, See More
May 4, 2011
zattamimi posted a discussion

The pressure drop through drill bit

Hi every body,In UBD case when estimate the pressure drop cross the bit nozzles there are a formula by William lyons to find that but I need to ask that the V mix the specific weight of fluid mixture under bottom-hole conditions (Ib/F^3) is any formula can I used to estimate this factor.My case UBD: water base mud + AirRegards, See More
May 4, 2011
zattamimi is now a member of Drilling Ahead
Apr 20, 2011

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