Application Research Of The Method Of Physical Geography For Reservoirs In 6-18 Project Area Of NiuZhuang Oil Field

The work emphases of exploration and development of the old oil fields in China hasbeen transferred from structural hydrocarbon reservoir to subtle one, the good example isgiven"the Eastern Oil Field of China". The lithologic reservoirs take the high rate in thesubtle reservoirs. The study of exploration and development of the subtle reservoirs hasbeen focused on lithologic reservoirs. It is extremely important study project for us how toprecisely predict and describe the complex lithologic reservoirs.The technology of the constraining seismic inversion processing and interpretation,which combine the variety of materials and specialisms, is one of the extremely effectivereservoir descriptions that study the changing law of the complex lithologic reservoirs.This technology fully makes use of scientific mathematic algorithm, perfect computersoftware and materials of seismic, logging and geology, and invert the data of abundantlithology, physical property and fluid property to the physical property materials includingthe data of unit wave impedance (formation velocity) ,lithology and porosity. The physicalproperty materials can directly be compared with the drilling and logging data so as tointerpret geology and reservoir aiming at the lithologic layers. This technology shows thesuper characters of seismic material'denseness in horizon and high differentiating abilityof logging materials in vertical and the unique advantages in the 3D characteristic andthickness of reservoir.The working project is located in the in NiuZhuang'middle zone of the southern sideof central rising crest in DongYing Sag.Its reservoir category belongs to oil-gas one. Basedon the reservoir type and geological structure feature, we study the seismic constraininginversion processing, the method of precisely constraining inversion and related keytechnology. In the course of this study, the precisely inversion processing will be done according to the specific condition such as the quantity of the well data, the fine degree ofseismic and geological interpretation and the different requirement of development projectin the different phases of exploration and development, so that the integrated data of highprecisely wave impedance and layer velocity will be inverted successfully. Furthermore,the reservoir description ambiguity will be reduced based on formation lithology andphysical property materials of drilling, logging and borehole log. Finally, the studyachievements of structure and reservoir will smoothly be completed.