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High-resolution Sequence and Prediction of the Oil Gas of the Lower Succesion in Xiaermen Oil Field of Biyang Sag

Author: LiZuoZuo
Tutor: XuDeBin
School: Chinese Geology University (Beijing)
Course: Paleontology and stratigraphy
Keywords: High resolution sequence Sedimentary facies Turbidite Reservoir Two oilfields
CLC: P618.13
Type: Master's thesis
Year: 2007
Downloads: 97
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Abstract


With the deepening of continental oil and gas exploration and development, sequence stratigraphy theory applies to basin scale classic sequence stratigraphy stage development to high-resolution sequence stratigraphy for reservoir-scale exploration and development stages. Two of its accuracy Basin unconformity control, the development of third-order sequence unconformity precision internal sequence four, five. Such a high resolution sequence corresponding to exploration practice and reservoir development geology practice especially with today's subtle reservoirs. High resolution sequence stratigraphy is widely used in oil and gas exploration and development in the study of the geological, become one of the most effective techniques. This article as the theoretical basis of sequence stratigraphy, sedimentology, petroleum geology, logging, seismic, and a variety of analytical tests for technical means two Oilfield, Biyang Depression, deep lines of division and correlation of sequence stratigraphy sedimentary facies and reservoir properties, provenance and other aspects of the study, in the core identified four base-level cycles, were named as the ultra-short-term cycles, short-term cycles, mid-cycle and long-term cycles. Layer of the study period, divided into four long-term cycles, mid-cycle 14 and a number of short-term cycles (short-term cycles scale is too small, and can only be identified in the core), through the the logging curve datum identification and contrast to determine the stratigraphic distribution, combined with the accommodation space within the base level cycle, its sedimentary evolution analysis. Through debris ingredients, heavy mineral assemblage characteristics, combine traditional integrated geological analysis, major provenance to determine fan delta and the eastern part of the northern Houzhuang Uplift. In the establishment of the relationship of an electric conversion and logging, coring wells paragraph Rock phase sedimentary facies interpretation model based on two fields, deep lines detailed sedimentary facies analysis to determine the next two fields, deep lines mainly sublacustrine fan deposition, and recognition within the fan (beyond the range of the study area), fan and outer fan the three subfacies and waterways, waterway edge, said proximal turbidite facies and distal turbidite equal five microfacies type and characteristics of various types of micro-phase deposition. Sedimentary Microfacies relationship between reservoir properties the watercourse and development of the middle fan subphase formation of reservoir properties best, followed by the the watercourse edge and Road between microfacies proximal middle fan turbidite facies and distal outer fan turbidites relative poor.

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CLC: > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Fuel deposits > Oil, natural gas
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