基于测井资料的老油区增储挖潜技术及应用

Technique of increasing reserves and potential areas based on logging data and its application in old oil fields

(1.中国石油大学，北京102249；2.中国石油勘探开发研究院西北分院，甘肃兰州730020；3.中国石油国际海外研究中心，北京100083)

China University of Petroleum, Beijing 102249, China

板南油田已进入开发的中后期，面临增储上产的难题。针对研究区构造复杂、储层薄而变化快、油水关系复杂的特点，提出了基于测井资料的老油田增储挖潜技术，包括斜井校正与等时地层对比技术、老井资料复查技术、两步法真三维构造解释技术、精细速度建模技术、岩性反演技术、圈闭评价技术。在板南油田利用这套技术发现了新的构造岩性油气藏，部署钻探了一口井，获得产气7×104 m3/d、产油17t/d的高产油气流。

Being at middle and later stage of development, Bannan oilfield faces the difficulty of increasing reserves and production. Aiming at the characteristics of complex structures, thin and fast changing reservoirs and complicated oil & gas relationship, we proposed techniques to increase reserves and potential areas in old oil field based on logging data. These techniques include deviated well trajectory correction, equal-time stratigraphic correlation, well data reevaluation technique, two-step true 3-D structural interpretation, detailed velocity modeling, lithological inversion, and trap assessment. By applying the method, new structural-lithological reservoirs were discovered in Bannan oilfield. One well was drilled in this area and gained 7×104m3/d gas flow and 17 t/d oil flow.