公开(公告)号：US20230287789A1

公开(公告)日：2023-09-14

申请号：US17654692

申请日：2022-03-14

申请人： Schlumberger Technology Corporation

发明人： Sharath Chandra Mahavadi ,  Ling Feng ,  Balakrishnan Panamarathupalayam ,  Dimitri Khramov ,  Lucas Mejia

IPC分类号： E21B49/08

CPC分类号： E21B49/088 ,  E21B2200/20

摘要： A method of operating a drilling fluid analysis system includes obtaining multiple samples of a drilling fluid at different times over a time period. The method also includes placing the multiple samples into a capillary electrophoresis device. The method further includes determining a respective concentration of a component in each of the multiple samples of the drilling fluid with the capillary electrophoresis device.

公开(公告)号：US20240229606A1

公开(公告)日：2024-07-11

申请号：US18693602

申请日：2022-09-29

申请人： Schlumberger Technology Corporation

发明人： Dimitri M. Khramov ,  Balakrishnan Panamarathupalayam ,  Sharath Chandra Mahavadi ,  Lucas Mejia

IPC分类号： E21B37/06 ,  C09K8/08

CPC分类号： E21B37/06 ,  C09K8/08 ,  C09K2208/12

摘要： Shale inhibitor additives, wellbore fluids comprising said additives, and methods using said fluids control hydration in wellbores disposed within swellable subterranean formations. The wellbore fluids contain aqueous base fluids. the shale inhibition additives. and natural biopolymeric viscosifiers. and optional encapsulating polymer agents. wherein the shale inhibition additives include amine-based shale inhibition agents. The methods circulate the wellbore fluids into the wellbores and/or maintain triamine-based shale inhibition agents of the wellbore fluids at concentrations of at least 50% by weight. based on total weights of the shale inhibition additives during multiple circulations of the wellbore fluids in the wellbores.