| Qaidam basin tectonic YingDong area 2010 S37 Wells in the tertiary industrial oil flow,officially opened the prelude YingDong regional exploration,2010 YingDong-1 N21-N22 reservoirs has been declared to predict oil geological reserves YiDunJi above.YingDong oilfield is the focus of the qinghai oilfield company and China petroleum in the next few years exploration area.YingDong oil field with special geological characteristics,reservoir and thin many,fine granularity,contain the well long,complex fracture system,domestic and foreign similar oil field is rare,can provide use for reference the experience of the exploration of less,to strengthen the research of sedimentary reservoir,accurately find the favorable reservoir is the core of oil and gas exploration.The sedimentary reservoir characteristics of YingDong area and comprehensive study,divide the source system,sedimentary microfacies,sand body distribution,analyzing the main factors which control the reservoir evolution,the prediction of favorable reservoir distribution and favorable exploration target area is put forward.Studies show that YingDong region development are braided delta front facies and coastal and shallow lake facies,and favorable facies belt for braided distributary channel of delta front subfacies principal part;YingDong areas of major reservoir reservoir pore types are mainly composed of primary intergranular pore,time for dissolution pore,a small amount of fracture aperture,physical properties and pore structure is better.Major reservoir belongs to shallow buried reservoir pore type,compaction is the main control factors,cementation are the secondary factors,sedimentary microfacies,the original fabric and controlling the reservoir property of the cement.According to the reservoir characteristics of YingDong area summarized there are sand "store",and points out that the key of its oil and gas exploration is looking for favorable sedimentary facies belt and sand body. |
PDF Full Text Request