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The Biyang Sag southern steep slope zone in Biyang depression south of the inside of the large fault, close to the northern furrow oil generation area, has superior oil source,'s sand body flat from the southwest, southern Yangqiao sand body and southeast Chestnut sand north of the Ministry of depth to the oil generation zone, large sand body and nose structure configuration formation updip pinch out trap lithology, physical properties of closure by the roots of a small sand body form glutenite lithologic traps provide a favorable venue for hydrocarbon accumulation, secretion 310 secretion 301 secretion 320, oily secretion 304 block mainly from west to east. Within the area with thick reservoir lithology particles mixed, poorly sorted rock composition and structure of the low maturity, reservoir lithology, and changes in physical properties, from top to bottom Sino-hole infiltration gradually becomes low porosity, low permeability reservoirs, and the uneven distribution of plane. Reservoir within the area with mainly in Paleogene Hetaoyuan, shallow distribution of heavy oil reservoir, the middle is generally conventional thin oil, deep volatile light oil, formation water main for heavy sodium bicarbonate type. Biyang depression southern steep slope with good oil and gas shows, part of the drilling wells to obtain a high-yield industrial flow of oil, and reveals the area a good exploration prospects, but there are many difficulties in the area with fine logging interpretation process , such as diverse reservoir types, complex lithology (sandstone, conglomerate, tuffaceous sandstone, lime mudstone), lithology exceed oily electrical electrical; poor connectivity of sand bodies, oil and water relationship chaos, oil dry unclear boundaries, the electrical characteristics of the oil and water layers is not obvious. To log interpretation to a better understanding of the distribution pattern of the area with the reservoir, to improve the ability to identify oil and gas, and to better serve the research and production, and therefore decided to carry out the Biyang Sag southern steep slope with oil-water layer identification and logging explain Method \In this paper, based on the geology, reservoir studies, coring, logging, logging data to carry out the reservoir four characteristics and the relationship between research, the establishment of major lithologic reservoir parameters interpretation model, the use of a variety of well logs overlapping and shaliness qualitative and quantitative identification of the reservoir, and the combination of coring, logging data research effective reservoir properties lower limit; reservoir identification based on the analysis of well log data, looking for the logging response characteristics of a typical oil-water layer subdivision Chu The lithology establish oil saturation interpretation model, combined with the saturation parameter logging, oil testing data integration discriminant oil-water layer, the establishment of the oil-water layer identification standard final application to achieve better results in the southern steep slope with log interpretation work.
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