Petrophysical capabilities of crosswell profiling with common depth point

Common depth point seismics in water-filled wells using a sparker and a multichannel array is used to detect and locate linear vertical objects. This approach rests upon comprehensive examination of all available data on geology and geophysics of enclosing rock mass. The wave field recorded in CDP profiling contains P-waves and the Lamb–Stonely waves propagating along the well axis. It is possible to study these waves using acoustic well logging. In this case, the results will be the velocity curves of P-waves and hydrowaves, as well as traces of reflected waves of both types. A major advantage of the approach is the array enabling multiple and multichannel recording. Such array is equivalent to multichannel well logging. It enhances accuracy of velocity estimation from time–travel plots owing to statistical effect and increases intensity of reflected waves thanks to stacking summation. The frequencies of the velocity characteristic determination can be 20–40, while stacking folds of reflected P-waves and hydrowaves are more than 100 and more than 400, respectively. The results can be used both as an independent tool for geologic cross-section differentiation and as a parameter database for downhole and land seismic surveys with common depth point.

Keywords: borehole seismics, acoustic logging, Lamb–Stonely wave, crosswell profiling, multichannel acoustic logging tool, reflected wave trace.
For citation:

Chugaev A. V., Sanfirov I. A., Tomilov K. Yu. Petrophysical capabilities of crosswell profiling with common depth point. MIAB. Mining Inf. Anal. Bull. 2020;(11):108-117. [In Russ]. DOI: 10.25018/0236-1493-2020-11-0-108-117.

Issue number: 11
Year: 2020
Page number: 108-117
ISBN: 0236-1493
UDK: 550.832.4
DOI: 10.25018/0236-1493-2020-11-0-108-117
Article receipt date: 28.04.2020
Date of review receipt: 11.08.2020
Date of the editorial board′s decision on the article′s publishing: 10.10.2020
About authors:

A.V. Chugaev1, Cand. Sci. (Eng.), Senior Researcher
I.A. Sanfirov1, Dr. Sci. (Eng.), Professor, Director,
K.Yu. Tomilov1, Engineer,
1 Mining Institute of Ural Branch, Russian Academy of Sciences, 614007, Perm, Russia.


For contacts:

A.V. Chugaev, e-mail:


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