Guanyin~ Reservoir Characteristics Of The Xujiahe Formation In The Datachang Area

The Xujiahe formation of Guanyin-Data field in exploration and development early, but make a block booking compared to sichuan basin Hebaochang structure and Anyue structure,the degree of exploration and development is very low, exploration and development in the process of oil and gas shows better, however, indicates the region must have huge oil and gas exploration and development center of value. This paper in petroleum geology, reservoir geology, sedimentary petrology, logging geology and other multi-disciplinary theory as the instruction, mainly for the goddess of Guanyin-Data field regional stratigraphic correlation, sedimentary facies types and distribution, reservoir characteristics and meticulous work, point out the area must be reservoir center of basic geological characteristics, the main reservoir types and reservoir classification and distribution, optimizing divided into this area should be the center of the formation and favorable exploration zones. Games through the analysis found that Guanyin-Data field must be paragraphs strata distribution center of stable, horizontal strata have good comparability, for delta-lake sedimentary system, it should be the second member of Xujiahe formation, the forth member of Xujiahe formation and the sixth member of Xujiahe formation of underwater distributary channel, river mouth dam is the most favorable sedimentary microfacies, the reservoir has low Porosity and low Permeability the characteristic, partial growth high Porosity and high permeability the section, the corrosion function forms the corrosion hole is the reservoir most main reservoir space, in the whole must the family river group by the hole reservoir primarily, the reservoir on longitudinal displays for the multi-wrap granulated substance body superposition, on the crosswise distributed scope is broad, also has the strong anisotropism, the synthesis determined must the family river group effective reservoir porosity lower limit be 5.0%, penetration coefficient lower limit for 0.1×10-3 ?m2. The Guanyin-Data field Xujiahe formation ?,? in reservoir, The reservoir is slightly better than The fourth member of Xujiahe formation of the required member of Xujiahe formation.Favorable reservoir layer development area is mainly concentrated in the area north of Guanyin field and Maliu field area, to carry out further special reservoir research, predictions to guide the next step exploration and development.