姬塬油田盐池黄388定向井区开发影响因素研究

The Influencing Factors in the Development of the Orientation Well In Huang 388 of Ji Yuan Oilfiled

姬塬油田黄388定向井区是典型的特低渗油藏,该区块储层物性差,水驱控制与动用程度低,地层压力保持水平低,单井产能与构造匹配相关性明显,无低含水采油期,初期递减较大。厘清该区块定向井区开发效果的因素显得十分关键。本文主要综合了测井解释、地层分层资料、压裂施工资料,进行了生产动态模式的划分(其中模式一位高效井)以及地质模式的分类,将研究区块开发矛盾分为低产(模式二和模式四)和水淹(模式三)两个方面。针对低产井,将该井区的开发效果归因为砂体连通性、井网完善性、储层物性等主控因素;对水淹井,水淹规律与各地质类型紧密相关。通过对该区块的整体研究分析,指出了该区块开发矛盾,为整个区块的增产调整以及稳产措施提供了有利的依据。

Huang 388 is the typical extra-low permeability reservoir.Its reservoir quality is bad.Water flooding has a very poor effect and producing reserves is low.The formation pressure decreases quickly and the individual well producing rate is correlated to the structure of the oil field.The development of the reservoir shows that there is no low water-cut oil production period and the early stage of the development has a high declining rate.It is definitely very important to figure out the influencing factors of this area.In this paper,the author combine the information of log interpretation,stratigraphic stratification data and fracturing construction data.The author concludes that the production performance can be classified into four types.So the author can link each production performance type to different factors.The type1 wells is normal.Type 2 and Type 4 have a low production rate owe to the sand body connectivity,well network perfection,reservoir quality and so on.Type 3 is drowned well and the factors is related to the geology type which shows the contact patterns of the bottom water and interbedded stratum.Through the analysis of this area,this paper points out the contradiction of the development of this oil field and provides a favorable basis for the adjustment of the whole area and the stabilization measures.