Depositional System And Space Distribution Of Single Sand Body In Gu137Area

Gulong depression area is located in middle of the Songliao Basin, as a north-south stripof zonal distribution. It is a deep lake depression by long-term growth. Experienced oil andgas exploration for years, we got lots of important discoveries, Putaohua formation is mostimportant contains oil goal formation in this area.Puxi area is located in Gulong depression in the west of Daqing, east to Putaohua oil field,west to Talaha-Gulong axle wire, south to Xinzhao, north Gaoxi oil field. Its main developposition is Putaohua layer, the depth of the layer is50-70m. It produced oil and water at thesame time, in the80%test layer. It caused the correspondence rate of the develop well loginterpretation was less than75%, this is the lowest area of the correspondence rate of thedevelop well over the years. It brings adverse effect for efficient development of oil fields.For this reason, we carried out the reservoir classification and interpretation method research,it was divided5reservoirs by different oilinesses, electrical properties, proterties of matter,lithologies. Then we can attain the goal of raising the correspondence rate of oil layer andwater layer interpretation.This article from Qijiagulong depression and the peripheral palaeostructure evolutionobtains,had conducted the scrutiny to palaeostructure of Qijiagulong concave slope area,summary four stages which palaeostructure evolves,and initial found Qijiagulong-Mofantunancient nose structure,had known the palaeostructure control action to the hydrocarbonmigration.In the palaeostructure research foundation,analysed by thickness of Putaohua oillayer, thickness of sandstone in Putaohua oil layer, paleostructural of Putaohua oil layer, wecan define the Provenance of the Surface Sediment are from different systems. Analysedstrcture, sandstone, static state, trends, perforation and oil and water in Putaohua layer, on thebasis of sequence stratigraphic classification, types and characteristic of Sediment Microfacies,single sanstone is identified according to meticulous contrast for layers.