Abstract
Commercial oil accumulation discovered in basement rocks of White Tiger oilfield opened a new exploration challenge for geologists and geophysics as well; simultaneously, it demonstrated the necessity to study this object more detail. A lot of results concerning research in basement rocks and mechanism of pore space formation were presented in several conferences or/and published in professional journals. Almost problems were clarified by researchers; however, for a comprehensive evaluation up to date the new data in which authors would like to focus on this paper, is determining the distribution of porosity in depth by logging data with supports of BASROC software version 3.0. When comparing the results of re-interpretation with additional new measurements with data summarizing 2006 show out that in basement rock the porosity decreases with depth; at zone V the porosity decreases to the value much lower than previous research results.
Highlights
Since 1988 the oil has been begun produced from the White Tiger Pre-Cenozoic fractured basement reservoir
The average value of s in the zone V dropped to 0.9% as a result of interpretation by BASROC version 3.0, this suggests that there is a higher match with the general background of the new s due to the change of secondary porosity in the oil-bearing basement reservoir (Figure 7)
The fracture-vuggy basement reservoirs in White Tiger oil field have unique and complex geological structure, which are characterized by highly heterogeneous mineral distribution and porous structures in which formed in basement rocks
Summary
Since 1988 the oil has been begun produced from the White Tiger Pre-Cenozoic fractured basement reservoir. The White Tiger Central Block and other structures on the Central uplifted zone had been moved to the East by the West–Eastern horizontal tension, forming a number of uplift - reverse faults and densely distributed fractures system in the elevated basement Along these uplift – reverse faults and SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 17, No.K5- 2014 fracture system, after being generated, developed mainly in the Central trough of basin, hydrocarbons migrated and accumulated in the elevated basement, pushing the whole enormous volume of water, which had been accumulated since millions of years ago, to the North and North-East flanks. Solid non-destructive rocks have too low permeability and unfavorable reservoir properties [5]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
