Method and apparatus for fracturing a deep borehole and determin

Details Method and apparatus for fracturing a deep borehole and determin Method and apparatus for fracturing a deep borehole and determin

1981-01-21

1984-02-14

Buczinski, S. C.

Communications, electrical: acoustic wave systems and devices

Seismic prospecting

Land-reflection type

166249, 166308, 367 14, G01V 124, G01V 122, E21B 4326

Patent

active

044320787

ABSTRACT:
A method of fracturing a deep borehole to form a vertical fracture, and of determining the azimuth of the resulting fracture, comprising pumping a pressurized fracture fluid into said well through a pipe from the surface, to provide a bottom hole pressure P which is less than the normal fracturing press (NFP), and generating a series of sharp pressure pulses (SPP) of selected magnitude, such that when added to the pressure P, provide pressure peaks greater than the NFP. By providing arrays of seismic sensors at the surface and determining the direction of propagation of the seismic waves generated by the SPP, the azimuth of the fracture can be determined.

REFERENCES:
patent: 2678107 (1954-05-01), Woods
patent: 3923099 (1975-12-01), Brandon
patent: 4044828 (1977-08-01), Jones et al.
patent: 4048612 (1977-09-01), Lawyer
patent: 4280200 (1981-07-01), Silverman

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