Fine Reservoir Description Of Laoqu Saertu In Yingtai Oil Field

This paper is to the problem of the low degree of reserve recovery, unclear residual oil distribution, confusion relationship between injection and production, prominent contradictions between plane and interlayer , low formation pressure of Saertu in Yingtai oilfield , apply the material of geological, seismic, logging, testing and so on, take the sedimentary petrography and the reservoir geology theory as the instructions, via exact stratigraphic division and comparison, use the comparison method that is "cycle comparison, classification control" under the control of marker bed , divide Saertu reservoir in this area into three sand group, nine subzone; through the study of the regional sedimentary background ,phase signs , reservoir rock constituents ,sedimentary bedding and structures, sedimentary sequences and so on, combined with regional data analysis , study the distribution of sedimentary microfacies and Space-Time distribution to determine the sedimentation type ,that is, Saertu reservoir as deposition for the delta front, the main developing facies type are braided river delta and turbidite; with dense well pattern logging information, by finding the method of sedimentary section to divide single sand body, and study the logging feature of sedimentary surface of discontinuity, three-dimensional spatial distribution of a single sand body and connectivity relations among single sand bodies ,make definite three-dimensional spatial distribution of a single sand body and connectivity relations among single sand bodies ; According to the result of the research of structure, deposition, reservoir and so on, we build up the three-dimensional geologic model of reservoir sandstone about the region of interest. That will help to lay a solid foundation on the research of reservoir heterogeneity and on the forecast block of profitability; by the analyze of the data of the physical property and oil property of the core in the unite of subzone combined with the result of testing for oil, commission(commissioning)and production performance, we build up new model for interpretation to amend original logging comprehensive interpretation, and on the basis of the model and the amendment, we can review the geological reserves and provide criterion to the objective evaluation of the result of exploitation ;In depth exploration of the static characteristic of Saertu reservoir in Yingtai oil field, we have made a further analysis on the master control factor and distributed rule, to foretaste favorable distributed area of remaining oil in Saertu reservoir, Yingtai oil field.By means of the exact description of the reservoir,, we got a clear understanding of sedimentary microfacies, reservoir's single sand body distribution, distribution rule of remaining oil of Saertu reservoir in Yingtai oilfield , that offers us the foundation of encryption deployment to well network, adjust the water injection program and the countermeasure research of final block digging to the next step.