Seismic Stratigraphic Analysis Fordepositional Environment and Hydrocarbon Occurrence Appraisal using Attributes
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EuroJournals Publishing
Abstract
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Seismic stratigraphical interpretation of rock deposits has been done using migrated
3D seismic data in SEGY format. This has taken into consideration the analysis of both
seismic sequences and seismic facies within the hydrocarbon reservoir of the Dongian oil
block, North-east China. Methods adopted include that which identifies contacts of the
upper and lower boundaries of the depositional sequences that were not absolutely
correlatable. The style of the reflection patterns is discovered to be borne out of the very
chaotic and dipping basement rocks. This is responsible for the arrangements of the
overlying sequences which were continuous or truncated either on the basement or by the
gently dipping listric fault amidst the middle portion of the sequences. In all two
unconformities were observed. It was discovered that sequence 1 is the prolific reservoir
and the overlying sequence 2 characterized by the sub-parallel to sigmoidal internal
reflection pattern is a combination of reservoir and the seal that impedes hydrocarbon
migration and makes the trapping system effective
Keywords
TA Engineering (General). Civil engineering (General), TP Chemical technology