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近十多年来,为改善成熟油藏开采的经济特性,国外开发出一整套适合成熟油区地震勘探的新技术,这些新技术主要包括四维地震、双传感器、洋底电缆、三维深度成象和野外地震资料处理等技术.四维地震技术.四维或加入时间间隔特性的三维地震技术是由一系列重复的三维勘测活动组成,用来连续观测和描述油藏开采中油藏特性随时间变化而发生的变化.时间间隔的三维地震技术结合单井生产动态、地质模型资料和其他地下信息资料,就能了解油藏中流体的实际流动方向.四维地震技术的基本原理是:油藏中流体的性质、温度、压力和其他油藏特性能产生一定的地震响应.这种地震响应能够用地震设备监测并记录下来,识别和监测这种地震响应的变化,可了解处于不同开发阶段油藏特性的变化情况,结合单井提供的油藏动态信息资料,就
In recent ten years, a series of new technologies suitable for seismic exploration in mature oilfields have been developed abroad to improve the economic characteristics of mature oilfields. These new technologies mainly include four-dimensional seismic, dual-sensor, ocean bottom cable, three-dimensional depth imaging And field seismic data processing techniques, etc. 4-D seismic technology 3D seismic technology with 4-D or added time-interval characteristics consists of a series of repeated 3-D surveys to continuously observe and characterize reservoir properties over time Changes in Seismic Time Interval 3D Seismic Techniques The combination of single-well production dynamics, geological model data, and other subsurface information can provide insight into the actual flow direction of fluids in reservoirs. The basic principles of four-dimensional seismic technology are: Properties, temperatures, pressures and other reservoir characteristics can produce some seismic response that can be monitored and recorded by seismic equipment to identify and monitor changes in such seismic response, to understand reservoir characteristics at various development stages Changes, combined with single well to provide information on the dynamic reservoir, on