Halliburton Energy Services, Inc.

Baker Hughes Corporation

Daniel Joseph Quinn

Bruce Edward Cornish

Ran Zhou

Donghong Pei

John W Gillespie

A seismic data analysis system includes seismic receivers to collect seismic survey data, wherein the seismic survey data includes direct and reflected arrival data in response to at least one seismic source fired at different shot offsets. The system also includes memory that stores the collected seismic survey data. The system also includes a processing unit that extracts traveltimes for direct and reflected arrivals from the seismic survey data and performs an inversion using the direct and reflected arrival traveltimes simultaneously to determine anisotropy parameters, including Thomsen parameters, epsilon (&#x3b5;) and delta (&#x3b4;), for at least one layer of a vertical transversely isotropic (VTI) model.

Anisotropy analysis using direct and reflected arrivals in seismic survey data

Disclosed herein is a single point seismic system comprising an array of air guns disposed within a frame. The array includes a cluster of air guns on one of its ends and a reduction in chamber size of the air guns along the length of the array. On the end of the array opposite the cluster the array can comprise a series of air guns whose chamber size is an order of magnitude less than the chamber size of the guns comprising the cluster. The middle of the array can comprise a series of air guns whose respective chamber volumes differ by an order of magnitude. The frame of the present invention is generally wholly submerged during operation and does not interfere with the seismic signal produced by the firing of the air guns.

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Spring, TX, United States of America

Daniel Joseph Quinn