论油气成藏的水动力作用  

On Hydrodynamism in Petroleum Migration and Accumulation

作　　者：符勇[1] 姜振泉[1] 马丽[2] 郭阳[2] 

机构地区：[1]中国矿业大学资源学院,江苏徐州221008 [2]中国石油河南石油勘探局,河南南阳473132

出　　处：《新疆石油地质》2005年第5期517-519,共3页Xinjiang Petroleum Geology

摘　　要：油气运聚是一个不可逆过程,也是一个时空有序的耗散结构。沉积水是油气运聚的载体和主要动力,对盆地流体的运动起控制作用,由盆地中心向盆地边缘呈离心流;渗入水由大气降水和地表水的渗入产生,受重力作用由盆地边缘向盆地中心呈向心流。沉积水与渗入水作用的结果产生一个压力平衡带,油气就聚集于这个压力平衡带上。油气圈闭要同时具备平衡结构和耗散结构,上部为平衡结构,使油气得以保存;下部为耗散结构,使油气不断充注,形成大的油气田。水动力对油气保存与破坏也有重要作用。It is an irreversible process and a dissipated structure with space-time match for petroleum migration and accumulation. The sedimentary water is the carrier and main driving force of petroleum migration and accumulation, which controls the fluid movement and appears centrifugal flow from the center to edge of basin, while penetrated water formed by infiltration of atmospheric precipitation and surface water appears centripetal flow from the edge to center of basin by gravity process. The result is that press equilibrium zone is formed under the processes, where oil and gas can be accumulated. A big oilfield could be formed by a trap with the upper equilibrium structure preserving petroleum and the lower dissipated structure injected with oil and gas continuously. The hydrodynamism is also of significant effect on petroleum preservation and destruction.

关 键 词：油气田 油气成藏 水动力学 耗散结构 泌阳凹陷 

分 类 号：TE112.12[石油与天然气工程—油气勘探]