System and method for producing high quality seismic records within bore holes
OwnerStephen Chelminskiinventor
Life of this patent
Estimating the term…
Abstract
A sound source for geophysical studies of the earth for oil, gas and other natural resource exploration and more specifically a streamlined design of a hydraulically controlled impulsive sound source that may be inserted into oil wells and bore holes and a system and method for obtaining high quality seismic records from the impulsive sound source by adjusting and maintaining pressures within the well or bore hole.
Claims29
An impulsive sound source for obtaining seismic records within a bore hole, comprising:
- a hydraulic pump;
- a reset piston;
- a free piston;
- a movable anvil;
- and
- wherein the free piston is accelerated by hydrostatic pressure to strike the movable anvil and transmit a sound pulse through a bore hole to obtain seismic records.
An impulsive sound source, comprising:
- an impulsive sound source comprising modules, the modules comprising:
- an umbilical termination module;
- an expansion chamber module;
- an electric motor housing module;
- a hydraulic pump module;
- a hydraulic cylinder module;
- a free piston implosion module;
- an impact chamber module;
- and
- a sound transmitting module.
A method of obtaining seismic records within a bore hole, comprising the steps of:
- delivering hydraulic fluid to move a reset piston to a free piston;
- latching the reset piston to the free piston;
- moving the reset piston and free piston to a ready to fire position;
- accelerating the free piston using hydrostatic pressure to strike a movable anvil to generate a sound pulse;
- transmitting the sound pulse through a bore hole to obtain seismic records.
A method of obtaining seismic records using an impulsive sound source within a bore hole comprising the steps of:
- moving an impulsive sound source within a bore hole;
- adjusting pressures within the bore hole;
- firing the impulsive sound at an adjusted pressure surrounding the impulsive sound source;
- and
- acquiring seismic records.
A system for adjusting and maintaining pressure within a bore hole in order to obtain acceptable quality seismic records using an impulsive sound source comprising:
- an impulsive sound source having at least one pressure sensor;
- a pressure source;
- and
- wherein the pressure source adjusts the pressure within the bore hole based on initial and current pressure readings from the at least one pressure sensor.
Dependencies are inferred from the claim text.