Prevention and treatment of lost circulation with crosslinked polymer material
    3.
    发明授权
    Prevention and treatment of lost circulation with crosslinked polymer material 有权
    用交联聚合物材料预防和处理流失

    公开(公告)号:US07098172B1

    公开(公告)日:2006-08-29

    申请号:US10455636

    申请日:2003-06-05

    IPC分类号: C09K8/04

    摘要: A process to substantially reduce fluid loss in which an appropriate amount of a non-flowing gel of sufficient strength is emplaced to substantially eliminate or reduce loss of the drilling fluid. The gel composition of the process includes: (1) a non-cellulose containing copolymer having vinyl phosphonate co-monomer units which may be incorporated into the polymer by copolymerization with the other co-monomer(s) comprising the polymer or by grafting upon an already existing polymer or co-polymer, (2) a crosslinking agent active upon the phosphonate groups, (3) a crosslinking initiator comprising a Bronsted Lowry base or Lewis base and (4) an aqueous solvent.

    摘要翻译: 一种基本上减少流体损失的方法,其中放置适当量的足够强度的不流动的凝胶以基本上消除或减少钻井液的损失。 该方法的凝胶组合物包括:(1)具有乙烯基膦酸酯共聚单体单元的非纤维素含共聚物,其可以通过与包含聚合物的其它共聚单体共聚合或通过与 已经存在的聚合物或共聚物,(2)对膦酸酯基起作用的交联剂,(3)包含Bronsted Lowry碱或路易斯碱的交联引发剂和(4)水性溶剂。