CAJ | 학술논문

异常压力与油气的运聚、成藏和分布有密切关系。东海盆地丽水凹陷具有非常明显的异常压力现象。通过分析异常高压的分布特征，讨论了异常高压与油气成藏的关系，并总结出研究区内与异常高压有关的成藏组合和模式。研究结果表明，丽水凹陷异常压力属于顶封滞排型异常压力系统，超压带压力梯度明显不一致，纵向上超压带可划分为封隔层超压带、压力过渡带和超高压带等三个异常压力带。根据油气分布及成藏特征可分为封隔层内油气成藏模式，封隔层之上油气成藏模式和封隔层下异常压力系统内成藏模式。
이상압력여유기적운취、성장화분포유밀절관계。동해분지려수요함구유비상명현적이상압력현상。통과분석이상고압적분포특정，토론료이상고압여유기성장적관계，병총결출연구구내여이상고압유관적성장조합화모식。연구결과표명，려수요함이상압력속우정봉체배형이상압력계통，초압대압력제도명현불일치，종향상초압대가화분위봉격층초압대、압력과도대화초고압대등삼개이상압력대。근거유기분포급성장특정가분위봉격층내유기성장모식，봉격층지상유기성장모식화봉격층하이상압력계통내성장모식。
Abnormal formation pressure is closely related to themigration，accumulation and distribution of oil and gas and abnormal pressure phenomenon is very obvious in Lishui Seg．Through analyzing the characteristics of abnormally high formation pressure distribution，the relation between abnormally high formation pressure and reservoir formation is discussed and the assemblages and patterns of reservoir formation related to abnormally high formation pressures in the region are summarized in the paper． In light of the research results it is indicated that the abnormal formation pressure in Lishui Seg belongs to a top-sealed and stagnantly expelling abnormal pressure system；the pressure gradients in the overpressure zone are obviously different from each other；and the overpressure zone may be vertically divided into three abnormal formation pressure zones，i.e． confining-bed overpressure zone，pressure transitional zone and superhigh pressure zone，etc． According to oil and gas distribution and the characteristics of forming oil and gas reservoirs，three reservoir formation patterns may be classified in the region，i．e． reservoir formation in the confining bed，reservoir formation above the confining bed and reservoir formation below the confining bed in the abnormal pressure system．