Downhole hydraulic seismic generator

Title: Downhole hydraulic seismic generator

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Abstract

A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.

Inventors:

Gregory, Danny L. ^[1]; Hardee, Harry C. ^[2]; Smallwood, David O. ^[2]

(Corrales, NM)
(Albuquerque, NM)

Issue Date:: 1992-01-01

Research Org.:: AT & T CORP

OSTI Identifier:: 868290

Patent Number(s):: 5113966

Assignee:: United States of America as represented by United States (Washington, DC) SNL

DOE Contract Number:: AC04-76DP00789

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: downhole; hydraulic; seismic; generator; transmitting; energy; wave; vibrations; earth; strata; surrounding; borehole; contains; elongated; unitary; housing; operably; connected; head; aboveground; support; electrical; cabling; clamping; apparatus; selectively; walls; comprises; oscillator; containing; double-actuating; piston; movement; controlled; electro-servovalve; regulating; pressure; fluid; flow; upper; chambers; spent; stored; pumped; provide; conducting; run; location; seismic generator; unitary housing; pressure fluid; hydraulic fluid; fluid flow; operably connected; pressure hydraulic; selectively clamping; strata surrounding; clamping apparatus; contains clamping; earth strata; electrical cabling; housing operably; hydraulic seismic; downhole hydraulic; /181/367/

Citation Formats


                    Gregory, Danny L., Hardee, Harry C., and Smallwood, David O. Downhole hydraulic seismic generator.  United States: N. p., 1992. 
        Web.

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                    Gregory, Danny L., Hardee, Harry C., & Smallwood, David O. Downhole hydraulic seismic generator.  United States.

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                    Gregory, Danny L., Hardee, Harry C., and Smallwood, David O. Wed .  
        "Downhole hydraulic seismic generator".  United States.  https://www.osti.gov/servlets/purl/868290.

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@article{osti_868290,

  title        = {Downhole hydraulic seismic generator},

  author       = {Gregory, Danny L. and Hardee, Harry C. and Smallwood, David O.},

  abstractNote = {A downhole hydraulic seismic generator system for transmitting energy wave vibrations into earth strata surrounding a borehole. The system contains an elongated, unitary housing operably connected to a well head aboveground by support and electrical cabling, and contains clamping apparatus for selectively clamping the housing to the walls of the borehole. The system further comprises a hydraulic oscillator containing a double-actuating piston whose movement is controlled by an electro-servovalve regulating a high pressure hydraulic fluid flow into and out of upper and lower chambers surrounding the piston. The spent hydraulic fluid from the hydraulic oscillator is stored and pumped back into the system to provide high pressure fluid for conducting another run at the same, or a different location within the borehole.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1992},

  month        = {1}

}

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