【摘要】 塔河油田南石炭系巴楚组盐体分布面积约1500km~2,S106井在盐下奥陶系获工业油气流,表明盐下具有巨大的油气勘探潜力。针对塔河油田南盐下勘探目标的特点,通过综合研究,结合叠前时间偏移、叠前深度偏移、层析成像等速度建模工具,建立了目标区准确的浅深层速度模型,实施了目标盐体区三维地震叠前深度偏移成像处理,提高了盐下目的层的成像精度,突出了与塔河油田下奥陶统碳酸盐岩溶洞发育有关的地震信息,提高了地震属性的保真度,对提高塔河油田盐下储层预测精度具有积极的意义。更多还原

【Abstract】 The Carboniferous salt body of Bachu Formation in southern Tahe oilfield covers an area of about 1500km~2. Commercial hydrocarbon flow is encountered in the subsalt Ordovician formations in well S106, revealingthat the subsalt formations are potential targets for oil and gas exploration. By taking the characteristics of thesubsalt targets into account, the author established the sha1low and deep velocity model of the survey area withvelocity analysis tools such as prestack migration, prestack depth migration, and tomography, and performedprestack depth migration on the targets. Precise velocity model and prestack depth migration ensure the definitionof seismic images of the targets.更多还原