by Todd Stair | Apr 7, 2020 | Engineering
The Citadel DEVGRU team has outdone themselves this time… We’ve taken the most over-engineered and relentlessly tested ULTRA MAG valve family and implemented truly game-changing improvements with validation testing proving it can not only survive, but thrive in the...
by Todd Stair | Jul 30, 2018 | Engineering
Citadel recently qualified our new 762 ULTRA MAG valve to 18,000 psi at 400°F with nitrogen gas, using V0 zero bubble acceptance criterion. This testing was performed by Stress Engineering Services in Houston. The gas test was performed after a 20 bpm for 24 hour flow...
by Citadel Engineering Team | Jun 14, 2017 | Engineering
Efficient shoe track drillout is essential to reducing nonproductive operations and resuming drilling new hole after casing runs as quickly as possible. Drilling out the shoe track is often troublesome as BHAs are typically designed to drill new formation, not the...
by Citadel Engineering Team | Jun 5, 2017 | Engineering
In any wellbore, it is critical to choose the right type of centralizer and to place those centralizers at optimum position on the casing to achieve good and consistent standoff. Casing centralizers are available in many shapes and sizes. It is important to understand...
by Citadel Engineering Team | May 18, 2017 | Engineering
As operators design wells with increasing lateral lengths and longer horizontal sections, running casing to TD has become more challenging. The longer the lateral, the more drag and friction forces impede the process of pushing casing to bottom. The majority of...
by Citadel Engineering Team | Apr 28, 2017 | Engineering
There are several reasons to place a cement plug – from plugging the well back for a sidetrack, preparing for a kickoff, well abandonment, or for curing a lost circulation zone. Successful cement plugs are rarely quick or easy. Placing a cement plug in an open hole...
