公开(公告)号：US20150285027A1

公开(公告)日：2015-10-08

申请号：US14436326

申请日：2013-12-20

Applicant: BASF SE

Inventor： Shane Mc Donnell ,  Oscar Lafuente Cerda ,  Burkhard Walther ,  Radoslaw Kierat

IPC: E21B33/14 ,  C09K8/575

CPC classification number: E21B33/14 ,  C08G18/3895 ,  C08G18/792 ,  C08G18/798 ,  C09K8/508 ,  C09K8/5086 ,  C09K8/5755

Abstract: Described herein is a novel method of strengthening a wellbore wherein the method uses a polyurea silicate composition. In the method of strengthening an oil well, a gas well or a water well, a mixture comprising at least one isocyanate component having at least two isocyanate groups per molecule; at least one alkali metal silicate; and water is pumped through the oil well, the gas well or the water well into the annulus of the well; subsequently, the mixture is allowed to form a polyurea silicate composition; before the polyurea silicate composition sets to thereby give a polyurea matrix comprising domains of silicate.

Abstract translation: 本文描述了一种加强井筒的新方法，其中该方法使用聚脲硅酸盐组合物。 在加强油井，气井或水井的方法中，包含至少一种每分子具有至少两个异氰酸酯基团的异氰酸酯组分的混合物; 至少一种碱金属硅酸盐; 水通过油井，气井或水井进入井的环空; 随后，使混合物形成聚脲硅酸盐组合物; 在聚脲硅酸盐组合物组合之前，由此得到包含硅酸盐畴的聚脲基质。