Publications

The Sesulu area is located in a strike-slip area of the Adang fault and Sepinggan fault. Complex faults severely observed in 3D seismic dataset in Sesulu area. Fault interpretation is a key step in seismic structural interpretation and it also lays the basis for proper quantitative interpretation, inversion and modeling. However, fault interpretation is a tedious, manual, subjective and time-consuming process. Current interpretive tools rely entirely on the interpreter while only utilizing the data qualitatively as a backdrop or indirect guide. Therefore, generation of fault interpretation becomes very challenging as it is not only describing the geological model but also contributes to the next exploration strategy. This paper is intended to compare two methods to obtain complex fault interpretation. The methods are: (1) Discontinuity and (2) Fault likelihood. Discontinuity technology has provided visualizing faults. It produces low discontinuity surface during computation of 3D discontinuity. Sharpened discontinuity cubes run on restricted azimuth 3D seismic volume give good imaging of fault patterns in selected orientations. In recent years, fault likelihood (Hale, 2013), which is a combination of different attributes, has been utilized. This increases the clarity and accuracy so much that automatic fault extraction from the attribute is now possible. Fault likelihood succeeds in providing the detail of the fault complex in the study area and it can help to define the faulted prospects.