公开(公告)号：US20170227672A1

公开(公告)日：2017-08-10

申请号：US15519008

申请日：2015-10-19

Applicant: BAKER HUGHES INCORPORATED

Inventor： Carl EDWARDS ,  Mohamed DAOUD ,  Sebastian CSUTAK ,  Alexandr Nikolaevich VASILEVSKIY

IPC: G01V7/06

CPC classification number: G01V7/06

Abstract: A method of estimating one or both of compaction or subsidence of a subterranean formation with gravity measurements. The free air gradient at surface is measured and compared with gravity measured in a borehole that intersects the formation. At a later point in time, values for gravity are re-measured, differences between the measured values at the initial point in time, and the later point in time are estimated. The differences are used to estimate the compaction or subsidence. A gravimeter can be used for measuring gravity, markers in the formation can be used in conjunction with the gravimeter.

公开(公告)号：US20180100950A1

公开(公告)日：2018-04-12

申请号：US15291797

申请日：2016-10-12

Applicant: BAKER HUGHES INCORPORATED

Inventor： Xiaochu YAO ,  Otto N. FANINI ,  Wei HAN ,  Mohamed DAOUD

IPC: G01V11/00 ,  E21B49/00

Abstract: Methods, systems, devices, and products for well logging using a logging tool in a borehole in an earth formation. Methods include conveying the logging tool in the borehole on a carrier; taking acoustic well logging measurements with the logging tool including generating a multitone acoustic beam from at least one transmitter on the tool, the beam comprising a high frequency signal modulated by a low frequency envelope, the high frequency signal including a first subsignal at a first frequency and a second subsignal at a second frequency, and generating measurement information at at least one acoustic receiver on the logging tool in response to a plurality of acoustic reflections of the acoustic beam from at least one volume of interest in the formation; and estimating a property of the volume of interest using the measurement information.