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.

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一岩性油气藏,部署钻探了一口井,获得产气7×10~4 m^3/d、产油17 t/d的高产油气流。

Being at middle and later stage of development,Bannan oil- field faces the difficulty of increasing reserves and production.Ai- ming at the characteristics of complex structures,thin and fast changing reservoirs and complicated oil & gas relationship,we pro- posed 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 da- ta re-evaluation technique,two-step true 3-D structural interpreta- tion,detailed velocity modeling,lithological inversion,and trap as- sessment.By applying the method,new structural-lithological res- ervoirs were discovered in Barman oilfield.One well was drilled in this area and gained 7×104 m^3/d gas flow and 17t/d oil flow.