Method for locating a hydrocarbon-containing geologic formation and extracting oil and/or gas
AssigneeKing Fahd University of Petroleum and Minerals
InventorsWail A. Mousa, Ahmed Abdelmoniem Mohamed Elmak
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Abstract
A method for first arrival picking of seismic data includes receiving a seismic shot record data set from a seismic event, extracting texture features from the seismic shot record data set, calculating an energy ratio matrix from the seismic shot record data set, using fuzzy c-means to cluster the texture features into a strong linear cluster, a moderate linear cluster, and a random noise cluster, calculating a first arrival class matrix from the moderate linear cluster, multiplying the first arrival class matrix by the energy ratio matrix to obtain a first arrival pick matrix, and identifying first arrival picks from the first arrival pick matrix.
Claims8
A method for locating a hydrocarbon-bearing geologic formation and drilling a hydrocarbon well with first arrival picking of seismic data, comprising:
- by a seismic wave generator arranged at a first position on an Earth surface, generating seismic shot waves, and transmitting the seismic shot waves from the Earth surface into an Earth subsurface;
- by a seismic receiver arranged at a second position on the Earth surface, sensing seismic signals from seismic events caused in the Earth subsurface by the seismic shot waves, to obtain a seismic shot record data set;
- by a data processing unit,
- processing the seismic shot record data set to identify first arrival picks associated with the seismic events, and
- using a geological model determined based on the first arrival picks, identifying a hydrocarbon-bearing geologic formation containing a subterranean hydrocarbon resource and a drill point of the subterranean hydrocarbon resource, where the geological model provides a three-dimensional representation of the Earth subsurface in vicinity of the first position;
- and
- by a drilling unit, drilling a hydrocarbon well at the identified drill point,
- wherein the step of processing the seismic shot record data set further comprises:
- calculating from the seismic shot record data set a plurality of descriptors,
- grouping the seismic shot record data set into a plurality of first arrival clusters with a fuzzy c-means and at least one descriptor, and
- identifying the first arrival picks from the plurality of first arrival clusters;
- and
- extracting oil and/or gas from the subterranean hydrocarbon resource.
Dependencies are inferred from the claim text.