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Title: Hydraulic impulse generator and frequency sweep mechanism for borehole applications

Abstract

This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring points on the surface or underground locations using geophones. The time required for the seismic signal to travel from the source to the receiver directly and via reflections is used to calculate seismic velocity and other formation properties near the source and between the source and receiver. This information can be used for vertical seismic profiling of formations drilled, to check the location of the bit, or to detect the presence of abnormal pore pressure ahead of the bit. The hydraulic negative pressure pulse can also be used to enhance drilling and production of wells.

Inventors:
; ;
Issue Date:
Research Org.:
Tempress Technologies, Inc., Kent, WA, (Unites States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176001
Patent Number(s):
7139219
Application Number:
10/777,484
Assignee:
Tempress Technologies, Inc. (Kent, WA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01V - GEOPHYSICS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
DOE Contract Number:  
FC26-97FT34367; FG03-00ER83111
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Kolle, Jack J., Marvin, Mark H., and Theimer, Kenneth J. Hydraulic impulse generator and frequency sweep mechanism for borehole applications. United States: N. p., 2006. Web.
Kolle, Jack J., Marvin, Mark H., & Theimer, Kenneth J. Hydraulic impulse generator and frequency sweep mechanism for borehole applications. United States.
Kolle, Jack J., Marvin, Mark H., and Theimer, Kenneth J. Tue . "Hydraulic impulse generator and frequency sweep mechanism for borehole applications". United States. https://www.osti.gov/servlets/purl/1176001.
@article{osti_1176001,
title = {Hydraulic impulse generator and frequency sweep mechanism for borehole applications},
author = {Kolle, Jack J. and Marvin, Mark H. and Theimer, Kenneth J.},
abstractNote = {This invention discloses a valve that generates a hydraulic negative pressure pulse and a frequency modulator for the creation of a powerful, broadband swept impulse seismic signal at the drill bit during drilling operations. The signal can be received at monitoring points on the surface or underground locations using geophones. The time required for the seismic signal to travel from the source to the receiver directly and via reflections is used to calculate seismic velocity and other formation properties near the source and between the source and receiver. This information can be used for vertical seismic profiling of formations drilled, to check the location of the bit, or to detect the presence of abnormal pore pressure ahead of the bit. The hydraulic negative pressure pulse can also be used to enhance drilling and production of wells.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {11}
}

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Works referenced in this record:

The use of drill‐bit energy as a downhole seismic source
journal, May 1991


Swept impact seismic technique (SIST)
journal, November 1996