Research On The Identification And Evaluation About Igneous Reservoir Of Es3(Middle-down) In Eastern Sag Of Liaohe

In the eastern sag of Liaohe,igneous reservoir are widely distributed.The igneous reservoir is abundant,which forms ten-million-ton-level single igneous reservoir Huangshatuo oilfield.The proven reserves of nearly 40 millions,shows great potential for exploration in the eastern sag of Liaohe depression igneous reservoir.Igneous reservoir has been a restricted area in oil-gas exploration, because of the poor physical properties and the difficulty of exploration, With continuous progress of technology, continuous updating and development of geological knowledge, igneous reservoir was gradually discovered by people. People have paided more attention to igneous reservoir due to the gradual reduction of oil-gas resources, which promote the cognition of the rule of igneous reservoir.The igneous reservoir has became an important type of reservoir in Liaohe basin,igneous reservoirs are characterized of lithology changes quickly, the uneven distribution of oil and gas complex etc.For nearly ten years, the igneous reservior exploration has not made significant progeress. The distribution range and spatial distribution of igneous reservoir is difficult to determine, through well seismic integrated research on seismic reflection featue analysis, establish the recognition marks of volcanic lithofacis in the eastern sag.Comprehensive application of waveform clustering,coherent,wave impedance inversion, time slice technology, the implementation of crater position and to predict the plane distribution of volcanic reservior range, innovation and put forward the drilling cycle and the seismic sequence combination. According to the theory of "cycle-period-lithofacies", the effective implementation of thecollection of different period time insider of igneous reservirs facies belt and analysis of reservoir orming rules, good exploration results have been achieved. Therofre, it is necessary ot fire on the area into reservoir distribution and accumulation characteristics of igneous material accumulation rules,it has very important guiding significance for igneous reservior exploration at next step.