Geophysics Technology And Application In Lithologic Traps Exploration

Although the development of the petroleum industry in our country have been over moiety secular history, but only accounts for 20% of total forecasting petroleum resources amount. Natural gas positive reserves were restricted to 7 % of forecast total resources. Petroleum and gas prospecting still has great potential. However, the structure oil-gas reservoir liable to discover have essentially came to light. In oil and gas traps which have been found last few years the proportion of lithologic oil reservoir section were increasing. The proportion of lithologic oil reservoir in petroleum-in-place demonstrated in Petrochina were over 50% during 2003. The proportion of lithologic oil reservoirs is over 70% in third class reserves. Compared with conventionality structural reservoir, lithologic oil reservoirs are in possession of more stealthiness ,more complex orderliness of forming traps, more difficulties for exploration, and more higher requirements of prospecting technology. Up to now , there are not yet valid allied techniques for lithologic oil reservoir exploration.Currently , the exploration aimed at lithologic oil reservoir are running like a raging fire in the track of the three petroleum corporation. It exact pragmatic powerful measures and complete technology to support. Over a decade, our petroleum explorer in lithologic oil reservoir forecasting and evaluation studies have performed a great deal works, accumulated abundant experiments. Especially in the lithologic oil reservoir description and target evaluation in the western and eastern region, They have achieved plentiful harvest and effect. It exerts vital role to improve explorative rate of success and to urge reserves discovery.This paper put forward a set of practical geophysical method and technique aimed at the Songliao southern basin lithologic oil reservoirs based on lithologic oil reservoir exploration method, technique research and application by means of dissecting successful exploration examples of the Yintai oilfield lithologic oil reservoirs. From apply point of view , it relatively carry out systematical discussion aimed at chiefly geophysical methods and technique principles,applied steps, key problems, caution notes in lithologic oil reservoir exploration. It also dissects usable range and relative merits of main soft ware that are concerned in lithologic oil reservoir at presence. By presentation with detail to large area, low abundance lithologic oil reservoir exploration examples in Songliao southern basin, this paper quests for a set of geophysical method and techniques discriminating lithologic oil reservoir in This paper raises a complete technology suitable for Songliao southern basin lithologic oil reservoir exploration by combining Songliao southern basin exploration practice, our lithologic oil reservoir...