A Study On Main Controlling Factors Of Remaining Oil Of Xinli Oilfield Block Ⅵ Yangdachengzi

Xinli Oilfield VI block is located in the old West oil zone, belonging to the construction of lithologic reservoir fracture development. Also low permeability reservoir I class blocks. Since 2000, it has carried out research on sedimentary microfacies of surface layers for small, oil sand body distribution, and carried out a qualitative distribution of the remaining oil, to guide the implementation phase to improve development effectiveness blocks played a positive role. Block now has entered the stage of high water, a small layer of original reservoir characterization unit has been far can not meet the needs of oil field development and production, highly dispersed state was an urgent need Potential of remaining oil and tapping the potential fine waterflood scheme of guiding the development adjustments. So in order to find out the distribution of the remaining oil, it is necessary Yangdachengzi oil monosandbody fine characterization, causes of single sand body type, developmental characteristics were studied, revealing monosandbody internal structures. By Xinli Oilfield Block VI purpose reservoir communicating relationship, relationship between injection, flooding rule, rhythm and distribution of the remaining oil, and laid the foundation for the geological block water and measures to adjust and improve, etc. Well, in order to deepen the old oil fields contribute to the development and oilfields.In sequence stratigraphy theory, using a standard layer control phasor control isochronous cycles based comparison method, the formation of fine division and contrast. With close spacing tip-hole logging data and comprehensive information on the results of seismic data interpretation, the new legislation through the sedimentary background fields, signs and other aspects of the research phase combined data analysis of the study area, study area to determine reservoir sedimentary phase, and then Understanding the distribution of Fuyang Reservoir single sand body is extremely complex and single sand body from the cause and nature, according to the research of single sand body, single sand body to carry out the causes of remaining oil distribution type study, based on microfacies, starting from single Causes identifying single sand body distribution and physical properties, thus recognizing the residual oil type and origin. On the basis of existing knowledge, combined with the characteristics of the study area genesis sedimentary layers purpose, mezzanine distribution, identify the residual oil is mainly distributed mode, on the basis of the above findings, to evaluate the suitability of existing Well, well presented next macro Net adjustment and improvement countermeasures and suggestions to improve the existing injection and production systems. With the remaining oil potential in research, combined with the existing oil wells network, analysis of single sand body injection patterns to improve the situation, put forward a sound program of injection patterns.