公开(公告)号：US20170199296A1

公开(公告)日：2017-07-13

申请号：US15400438

申请日：2017-01-06

Applicant: M-I L.L.C.

Inventor： Balakrishnan Panamarathupalayam ,  Amr Essawi

IPC: G01V3/20 ,  G01V3/34 ,  C09K8/035 ,  C08F220/56 ,  C09K8/12

CPC classification number: C09K8/52 ,  C08F212/14 ,  C08F220/54 ,  C08F220/56 ,  C08F228/02 ,  C09K8/035 ,  C09K8/12 ,  C09K8/5083 ,  C09K8/512 ,  C09K2208/26 ,  E21B37/00 ,  E21B37/08 ,  E21B43/082 ,  E21B43/10 ,  E21B43/25 ,  G01V3/20 ,  G01V3/24 ,  G01V3/34 ,  C08F2220/585

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：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.