Reservoir Description To Qigu Formation In The Six Region Of Nine Block Of Karamay Oil Field

The six region of nine block of karamay oilfield is located in the northeast of karamay in Sinkiang about 50 kilometers,it located in the eastern part of nine block,it belongs to heavy oil reservoir.In the development process of nearly 30 years,many workers of karamay oil field have made a lot of geological knowledge and research.For the exploitation of the oil field,many wells has entered the later period of steam flooding development,it is more difficult to dig the potential.We need to go further on the basis of the predecessors,and obtain more detailed and more further understanding to control water and stabilize oil,we also need to stabilize production base,we provide the basis for adjusting and improving injection-production well spacing and rolling extention.On th basic data of the six region of nine block of karamay oil field,by analyzing the formation and tectonic evolution model,compositing core petrology characteristics and well logging response characteristics,we subdivide the second layer of Qigu formation and have a fine correlation.Based on the results of layer correlation,we divide sedimentary microfacies both in section and plat.According to the depositional model of coarse delta,we analyze the distribution of sand body and interlayer,then we can analyze connection of reservoir.At last,we contrust 3D model of the study area to analyze heterogeneity and physical properties,then we calculate reserves to the next stage which part of remaining oil.This research mainly includes the following several aspects:1.According to the well logging curv which is GR,SP,RT,we subdividing the second layer of Qigu formation.2.The six region of nine block is coarse delta sedimentary environment,it include six sedimentary microfacies that distributary channel,underwater distributary channel,diara,estuarial dam,between fan sedimentary and debris flow.3.Analyzing the distribution of sand body and interlayer.4.Analyzing the physical properties and oiliness of the reservoir.5.Constructing tectonic model and attribute model to calculate reserves.