Energy source for use in seismic acquisitions
AssigneeSchlumberger Technology Corporation
InventorsGlen-Allan S. Tite, James E. Brooks, Paul A. Lezak
Life of this patent
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Abstract
A seismic acquisition system includes one or more perforating shaped charge modules activable to generate seismic signals into an earth sub-surface. The seismic signals are created by perforating jets formed by the perforating shaped charge modules when activated. The perforating jets produce directional seismic signals that reduce the amount of lateral noise. One or more detectors are employed to receive signals reflected from the earth sub-surface in response to the seismic signals.
Claims36
A seismic acquisition system comprising:
- an energy source including a perforating shaped charge to generate a seismic signal, the shaped charge having a housing;
- a detector positioned to detect a reflected signal in response to a seismic wavefront;
- an anchor attached to the perforating shaped charge;
- and
- a retainer placed over the shaped charge housing and adapted to hold the perforating shaped charge in place, the retainer containing a detonator ballistically coupled to the perforating shaped charge.
A method of acquiring seismic data requesting a characteristic of an earth sub-surface, comprising:
- positioning an energy source having a perforating shaped charge in an anchoring device, the perforating shaped charge having a housing;
- providing a retainer placed over the shaped charge housing to hold the perforating shaped charge in the anchoring device;
- providing a detonator in the retainer that is ballistically coupled to the perforating shaped charge;
- inserting the anchoring device into the earth sub-surface;
- and
- activating the perforating shaped charge to transmit a seismic signal into the earth sub-surface.
An apparatus for use in a seismic acquisition system, comprising:
- a plurality of perforating shaped charges each activable to generate a seismic signal into an earth sub-surface, each perforating shaped charge having a housing;
- a plurality of anchor devices attached to respective perforating shaped charges to anchor the perforating shaped charges in the earth sub-surface;
- a plurality of retainers adapted to hold the perforating shaped charges in respective anchor devices, each retainer placed over a respective shaped charge housing;
- and
- a plurality of detonators provided in respective retainers and ballistically coupled to the perforating shaped charges.
Dependencies are inferred from the claim text.