The Study Of Chang-Six Reservoirs In Dao Zhen Area In Xia Siwan Oilfield

Study Xia Siwan oilfield an the basis of the lower layer and the corresponding flag log characteristics, the study area were fine stratigraphic division and correlation. Geological coring and drilling data, analyzes and summarizes the reservoir sedimentary characteristics, petrology and electrical characteristics, portfolio characteristics and pore structure. By observing coring data, the main lithvlogical description reservoirs, mineral composition, cement type, particle size, sorting cases, fillings, etc. to fully understand the ability to control the oil reservoir qualitative factors. Formation of the study area reservoir characteristics arc summariacd research. With the oil field geology and long data related to geological conditions throughout the layer thickness and the corresponding curves, rock power relations further study, in the correct interpretation of well logs divided strata.The study that the mayor chang-six reservoirs in the delta front deposits, mainly sand for underwater distributary channel sand bodies, mainly fine-grained feldspathic sandstone, which with light gray sandstone, gray and light gray-green fine-grained sandstones, better sorting, sub-angular shape, its composition and structure of maturity high, the main reservoir in this area a length 6, its combination of type of pore corrosion hole-the remaining holes-complete micro-fracture type, reservoir properties are low porosity, low permeability, small throat of its main features, is low porosity and low-permeability reservoirs, clastic rocks of the diagenetic changes in reservoir porosity of the clastic rock formation, preservation and destruction play a very important role. Clastic reservoir and the reservoir performance is well received by the control of sedimentary facies, but also strongly influenced by diagenesis. The rearch provides the basis for setting reasonable oil field development scheme in Dao Zhen area in Xia Siwan oilfield.