Forming Reservoir Research Of Volcanic Rock And Correlated Reservoir In Huimin Shanghe Area

Action of volcanic magma happens universally with action of geostructure. It is existed universally in all deposit basin. Volcanic rock is very vegetal in Huimin falling, Bohaiwan basin, east of China. Especially, it is very vegetal in Shanghe area of eastern of falling. In the period of Shasan, there developed a lot of irruptive Volcanic rock. In the period of Shasan to Guantao, there developed a lot of eruptive volcanic rock. There have got industrial oil stream in two kind of volcanic rock by far. There are large potentiality of exploration. But because origin of volcanic rock is very complex and its reservoir is very aeolotropy. So exploration of volcanic rock is very difficulty. We think it have active bearing that volcanic magma irrupting for generation, move, accumulation of oil and gas through research. At first, the thesis discuss the course of volcanic rock exploration, acquire headway near ten years and development direction in the future. Then begin to research exploration situation of volcanic rock and the effect action of volcanic magma for oil and gas. The effect including four aspects: the effect for hydrocarbon mother rock and generating hydrocarbon evolution, the effect for oil and gas reservoir, the effect for the forming of cap rock and trap, the effect for oil and gas movement and conservation. Summary the experience and lesson previous . Apply the previous experience and outcome to huimin shanghe area of Jiyang depression. Through research distributed rule of volcanic rock, the oil source, structure and reservoir, summary the law of forming oil reservoir of volcanic rock in this area, create the model of forming oil reservoir of volcanic rock in this area. Prove the oil source fault is the requirement of forming oil reservoir of volcanic cone. There are 5 class oil reservoirs in this area, fracd oil reservoir of irruptive volcanic, oil reservoir of volcanic cone screened or oil reservoir of volcanic rock diaper, oil reservoir of volcanic cone, oil reservoir of drape structure of volcanic cone, oil reservoir of upwarp structure. Thre are 3 class reservoir in this area, reservoir of volcanic rock, reservoir of sandstone, reservoir of carbonatite. We researched the lithofacies of irruptive and eruptive volcanic rock. Created class method of facies model be fit for this area. This method is workable in seismic section, so that highten the practicability in exploration. In this course, we applied some new technologies and methods to exploration of anogenic and correlated oil reservoir in Huimin Shanghe area, these technology including: the technology of identifying volcanic rock, the technology of describing volcanic rock, the technology of forecasting volcanic rock reservoir, the technology of removing and pressing disturbance of volcanic rock. And it gained the good effect. At last, it summary the thesis. It explain that the different oil reservoir class have the different exploratory thinking. It summary 3 problems at present in course of explorating volcanic rock. The problems including: the classing and naming of lithology and lithofacies of volcanic rock is disordered, evolutional mechanism of reservoir of volcanic rock is undefined, matching technology of explorating volcanic rock is incomplete. For posterior explorating volcanic rock, it have directory meaning.