OLIGOMERIC AND POLYMERIC ELECTRONICALLY-MODIFIED BORONIC ACIDS AND METHODS OF USING THE SAME
申请人:Halliburton Energy Services, Inc.
公开号:US20140174748A1
公开(公告)日:2014-06-26
Crosslinked gelling agents employed during subterranean operations use electronically-modified boronic acids to enable higher operating temperatures while allowing reduced gelling agent loadings; the boronic acids having Formula I:
X
1
and X
2
are independently selected from O, CH
2
, CH
2
O, OCH
2
, bond, and null, Y
1
and Y
2
are independently N or C, Ar is a 5- or 6-membered ring aryl or heteroaryl group with a link L to monomer unit M
1
, m is 1 or 2, n is 0, 1, 2, or 3, and each Z is independently an electron withdrawing group selected from nitro, ester, carboxylic acids, carboxylates, halogen, cyano, amide, acyl, alkylsulfonyl, arylsulfonyl, heteroarylsulfonyl, CF
3
, a quaternary ammonium salt, polyhaloalkyl, and carbamate, with the proviso that when n is 0, the link L between M
1
and Ar includes an electron withdrawing group attached to Ar, and introducing the treatment fluids into subterranean formations.