Mazhai Oilfield Guardian 305 Reservoir Fine Description

This thesis goal is aims at Wei 305 which enter high moisture of developing, using the advanced oil reservoir description technology, through the stratigraphic comparison, the explanation of structure crack system and sandstone body forecast, the article have cleared the distribution of the structure and the reservoir; Through the low resistivity oil and gas formation research, the thesis determinated low resistivity origin, the electrical characteristic and the quantitative interpretation model, for establish basis of production increasing; Through the research of remaining oil distribution law, proposes the oil reservoir stimulation measure and the oil reservoir development adjustment measure. This article obtains main research results including below aspect: (1) Synthesizing utilization material of well logging, core, to divide and contrast the entire area Sha 3 formation; (2) Using "the core scale division oil well logging method" and "the mathematical statistic method", establishes in the entire area reservoir parameter porosity, the penetration coefficient, the shale content, the granularity the value and the oil saturation explanation model, takes the core well research the foundation, divides this area reservoir into three kinds; (3) Synthesizing analyze the reservoir lithological character, the formation water salinity, the mud character and the microscopic reservoir characteristic, accomplished the main factor to form low resistivity oil layer, proposes the explanation method of Rt* Vsh and the Ac bore log connection chart low resistivity oil layer, resolute the difficult problem of low resistivity oil layer well logging interpretation; (4) Through research of sedimentary micro-facies, the oil reservior micro structure and the reservoir quality synthetic evaluation, the thesis has analyzed granulated remaining oil distribution law of various sandstone formation, proposed the oil reservoir stimulation measure and the oil deposit development adjustment measure, and provides the basis for next step to develop.