Method of determining optimal seismic multistreamer spacing
AssigneeExxon Production Research Company
InventorsScott C. Hornbostel, Stanley V. Morris
Life of this patent
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Abstract
Disclosed is a method of determining the optimal spacing of seismic receiver lines, including marine streamers. A weighted squared error function is defined between a desired array response function and an actual response function, and the error function is minimized to determine the values of crossline offsets between streamers as well as the depths of the streamers in a configuration to minimize out-of-plane signal effects, for example.
Claims20
A method of determining the optimal geometry of an array of at least two lines of seismic receivers, comprising the following steps:
- a. specifying a selected array response function and a weighting function;
- b. defining a weighted squared error function between the selected array response function and an actual array response function;
- and
- c. minimizing the weighted squared error function to determine the geometry of the array.
A method of determining the optimal relative spacing of multiple marine seismic streamers in an array, comprising the following steps:
- a. specifying a selected array response function as a function of the crossline angle of arrival of seismic signals at the array of streamers and of the seismic signal frequency;
- b. specifying a weighting function as a function of the crossline angle of arrival of seismic signals at the array of streamers and of the seismic signal frequency;
- c. identifying the actual array response function for summed data from the streamers;
- d. defining a weighted squared error function between the selected array response function and the actual array response function;
- and
- e. determining the streamer spacings that minimize the weighted squared error function.
Dependencies are inferred from the claim text.