High-resolution Sequence Stratigraphy Research And Development Potential Appraise Of Fuyu Oil Layer In The Peripheral Area Of Chaoyanggou Oil Field

This thesis is based on the core, drilling, logging, and other which characterized by high-resolution information, combining with the base-level cycles of high-resolution sequence stratigraphy theory and research methods to make close combination of sequence stratigraphic analysis technology and deposition theory. And then, the study of sequence interface, internal structure and spatial configuration, and the reflected depositional environment in different class are united. The sedimentary facies, subfacies or Microfacies spatial distribution under the control of different levels of base-level cycles are studied, and then research and forecast of oil source rock, reservoirs, cap rock spatial distribution, composition and type three-dimensional are made, especially for continental-fluvial sandstone reservoir prediction, the study provides an effective method.In this paper, through the analysising characteristics and Pan-identification signs of sequence interface and surface of the lake of the surrounding areas of Chaoyanggou Oilfield at different levels in detail, 2 long-term base-level half cycles, 7 medium-term base-level cycles, and 39 short-term base-level cycles are identified. On this basis, all levels of cyclic sequences vertical sequence,assemble lithology and lithology facies,structure type and stacking patterns, and other characteristics are discussed, and the foreground the high-resolution sequence stratigraphy research results in oilfield development of the application are discussed. On the basis of the high-resolution sequence stratigraphy research, the research of the major oilfield reservoir-Fuyu oil layer of surrounding areas of Chaoyanggou for short-term base-level cycle sequence (SSC) is made. Chaoyanggou oilfield surrounding areas Fuyu oil layer is subdivided into 17 layers 39 short-term base-level cycle sequence, and it makes the foundation of research to single sand in space. Using base-level cycle theory, through short-term base-level cycles division and correlation of Fuyu oil layer sequence in the study area, established the Fuyu oil layer high-resolution sequence stratigraphic framework as well as on the short-term base-level cycle sequence Fine microfacies research, the causes of the reservoir, size, density, distribution of plane of the study area are made clear, and on this basis ,combining with Chaoyanggou oilfield reservoir geological characteristics, accumulation factor, oil bearing, division and evaluation of oil and gas reservoir system and the reservoir which has been found and distribution of reservoir characteristics, the study area Fuyu favourable reservoir lithology trap have been comprehensive forecasted; favorable exploration area has been determined; It is significant to practical guidance in the next step to the development and oil wells disposition.