00919nab a2200193 4500 20260520003334.0 260224s xxu Weiss, Mike W. 11445 McLennan, John 11446 Underbalanced operations:Available search/training opportunities Drillingat BHPs less than pore pressure offers significant advantages and economic benefitsin certain formations. Here's how Gas Research Institute (GRI) has been supporting underbalanced operations in applications where they can reduce drilling/ completion costs and improve productivity 12/09/06 ; 09/05/2003 5 p. Perforación bajo balance 2538 McLennan, John 11446 World Oil Vol. 219, no. 6 (jun. 1998); p. 75-80 Weiss, Mike W. 11445 ARTICULO 134859 134859 0 0 0 0 205778 BAAB BAAB 2026-03-04 200013071 0 200013071 2026-03-04 15:01:59 2026-03-04 ARTICULO