Fluid loss control studies were conducted under {HEAD ~ 100 psi nitrogen pressures} in {TAIL ~ enclosed containers} 
in
Fluid loss control studies were conducted under { HEAD ~ 100 psi nitrogen pressures } in { TAIL ~ enclosed containers }
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL