公开(公告)号：US10308861B2

公开(公告)日：2019-06-04

申请号：US15400438

申请日：2017-01-06

Applicant: M-I L.L.C.

Inventor： Balakrishnan Panamarathupalayam ,  Amr Essawi

IPC: C09K8/52 ,  E21B37/00 ,  C09K8/035 ,  E21B37/08 ,  E21B43/08 ,  E21B43/10 ,  E21B43/25 ,  C08F220/56 ,  C09K8/12 ,  G01V3/20 ,  G01V3/34 ,  C08F220/54 ,  G01V3/24 ,  C09K8/508 ,  C09K8/512 ,  C08F212/14 ,  C08F228/02

Abstract: A method of electrically logging a section of a wellbore includes circulating a wellbore fluid within the wellbore, the wellbore fluid including a base fluid; and a crosslinked and branched polymeric fluid loss control agent formed from at least an acrylamide monomer and a sulfonated anionic monomer; wherein the fluid loss control agent has an extent of crosslinking that is selected so that the fluid loss control agent has a viscosity that is within a peak viscosity response of the viscosity response curve; placing within the wellbore a wellbore logging tool capable of applying an electrical current to the wellbore; applying electrical current from the logging tool; and collecting an electrical log of the portion of the wellbore that has had electrical current applied thereto.

公开(公告)号：US10273400B2

公开(公告)日：2019-04-30

申请号：US14648509

申请日：2013-11-29

Applicant: M-I L.L.C.

Inventor： Changping Sui ,  Balakrishnan Panamarathupalayam ,  Hui Joyce Zhang ,  William E. Foxenberg

IPC: E21B36/00 ,  C09K8/592 ,  E21B43/24

Abstract: Insulating packer fluids containing colloidal silica inorganic additives may be used in methods that reduce convective currents in a packer fluid. In other aspects, packer fluids containing colloidal silica inorganic additives may be used in methods of insulating production wells and methods for stimulating production of hydrocarbons.

公开(公告)号：US20150152315A1

公开(公告)日：2015-06-04

申请号：US14414088

申请日：2013-07-08

Applicant: M-I, L.L.C.

Inventor： Sashikumar Luyster ,  Steven Young ,  Emanuel Stamatakis ,  Balakrishnan Panamarathupalayam ,  Changping Sui

IPC: C09K8/502 ,  E21B36/00

CPC classification number: C09K8/502 ,  C09K8/03 ,  C09K8/34 ,  C09K8/36 ,  E21B36/003

Abstract: A insulating annular fluid for reducing convective currents in the annular region a wellbore is provided that includes an oleaginous fluid, a silica, and, in some embodiments, organoclay.

Abstract translation: 提供了一种用于减少环形区域中的对流电流的绝缘环形流体，其包括油质流体，二氧化硅，在一些实施方案中为有机粘土。