三维地震在纯化油田开发中的应用

Application of 3D seismic to Chunhua oilfield development.

纯化油田构造十分复杂。通过三维地震与钻井资料精细结合，对其宏观及微观构造进行细致的综合分析，并经构造与动态的一致性检验，确定其油藏类型，认为原来所谓层状断块油藏实为受复杂断层控制的层状构造油藏；再依据老油田潜力区的控制因素，判定小断层对油层的封堵分割作用是形成潜力区的主要因素，确定出３种主要的潜力区，打井实施后取得显著的增储上产效果，尤其是非主流线区的构造低部位，可视为注水中水力遮挡富油区，是一种新的挖掘潜力方向。将三维地震资料与大量钻井资料相结合，在老油田稳水控油、增储上产的研究中进行综合分析，可以获得显著效果。

Structurally, Chunhua oil field is very complicated and uncertain. By carefully combining 3D seismic and drilling data, making detail and integrated analysis to its macro and micro structures and matching the structure feature with production performance, the oil pool type is determined in this paper. It is suggested that the previously interpreted stratified fault block pool is practically a stratified structural one with complex faults. By further studying it, the effect of small faults on the sealing of reservoirs in matured oil fields is better understood, which results in good production potential in some areas or units of the field, especially the good potential for the structural lows in the non main stream line region which is considered as the rich oil area hydraulically trapped by injected water. Practice in pilot tests has confirmed the usefulness of this method in stabilizing oil production and controlling water cut as well as increasing oil recoverable reserve and production of the matured oil fields.