公开(公告)号：US20210180448A1

公开(公告)日：2021-06-17

申请号：US17247445

申请日：2020-12-11

Applicant: Schlumberger Technology Corporation

Inventor： Pavel Annenkov ,  Melisa Lourdes Ramirez Tovar ,  Robert Tennent ,  Sam Soundar ,  Jiuping Chen ,  Liang Sun ,  Richard Hunter ,  Wei Zhou

IPC: E21B47/13 ,  E21B7/18

Abstract: Communication between the surface and a downhole location, such as a bottomhole assembly and/or an RSS is performed by electromagnetic downlink. Electromagnetic signals are transmitted from the surface through the formation at a frequency of 8 Hz or greater. Electromagnetic signals are transmitted and received while drilling or during drilling activities. In this manner, information and instructions may be transmitted to the BHA while drilling.

公开(公告)号：US12110789B2

公开(公告)日：2024-10-08

申请号：US17247445

申请日：2020-12-11

Applicant: Schlumberger Technology Corporation

Inventor： Pavel Annenkov ,  Melisa Lourdes Ramirez Tovar ,  Robert Tennent ,  Sam Soundar ,  Jiuping Chen ,  Liang Sun ,  Richard Hunter ,  Wei Zhou

IPC: E21B47/13 ,  E21B7/18 ,  G01V3/30

CPC classification number: E21B47/13 ,  E21B7/18 ,  G01V3/30

Abstract: Communication between the surface and a downhole location, such as a bottomhole assembly and/or an RSS is performed by electromagnetic downlink. Electromagnetic signals are transmitted from the surface through the formation at a frequency of 8 Hz or greater. Electromagnetic signals are transmitted and received while drilling or during drilling activities. In this manner, information and instructions may be transmitted to the BHA while drilling.