轮古东奥陶系凝析气藏水体能量评价研究

Study on Lungu East Ordovician Gas Condensate Reservoir Water Energy evaluation

轮古东奥陶系凝析气藏发育多套产层,纵横向油水关系复杂,多数井水淹后,油对气采出程度低,累计产量低,严重制约了该气藏的规模开发。通过对大量资料的分析,利用压降曲线法、体积平衡原理和水侵体积系数法等多种方法完成了水体定量评价研究,建立了定量评价标准。对水体纵横向分布特征进行总结:横向上水体能量强弱不等,整体呈现工区南部的水体能量强于北部的趋势,具体表现为轮南断垒带水体能量较强,而沿轮东走滑断垒带西侧的区域水体能量表现为中等,水体能量较弱的区域则为桑塔木断垒带;纵向上鹰山组水体能量要强于一间房组,比一间房组更易出水。

Round of the ancient East Ordovician gas condensate reservoirdevelops several sets of production layer.Its vertical and horizontal oil-water relationship is complex.After the flooding of most wells,low level of oil and gas recovery cumulative production,severely restricts the size of the gas reservoir development.The predecessors only makes a simple qualitative analysis of the water energy.Through a large number of first-hand information analysis,using the pressure drop curve method,the principle of volume balance and water influx volume coefficient method and other methods,it completes the water quantitative evaluation of quantitative evaluation criteria.Aspect to the distribution characteristics of water are summarized,body transverse energy intensity ranging from a whole shows the trend of the water body of the work area in southern energy is stronger than the north.The specific energy performance for the Lunnan off base with water is strong,while walking along the round of the East slip off base with the west side of the regional water energy performance for the weak area of moderate water energy compared with Sangtamu with.Longitudinal the Yingshan water energy is stronger than a house group.