高含水油藏井网重组与二元驱复合增效——以南襄盆地双河油田Ⅳ5—11层系为例  

Study on effectiveness of integrating well pattern rearrangement with binary combination flooding in oil reservoirs with high water-cut: an example from the Ⅳ5-11 layers in Shuanghe oilfield,the Nanxiang Basin

作　　者：艾敬旭[1] 周生友[2] 马艳[1] 肖见 代亚竑[4] 李洪生[4] 惠冠洲[4] 

机构地区：[1]中国石化国际石油勘探开发有限公司,北京100029 [2]中国石化石油勘探开发研究院,北京100083 [3]中国石油新疆油田分公司风城油田作业区,新疆克拉玛依834000 [4]中国石化河南油田分公司石油勘探开发研究院,河南南阳473132

出　　处：《石油与天然气地质》2012年第1期129-134,共6页Oil & Gas Geology

摘　　要：针对高含水油藏开发后期面临大幅度提高采收率的难题,以南襄盆地泌阳凹陷双河油田Ⅳ5—11层系为例,提出了井网重组与二元驱复合增效技术。鉴于研究区油砂体平面叠合情况、物性差异等地质特点,以及纵向单层动用程度差别大的状况,首先采用相似性的原则,对层系井网细分重组;同时对原井网开展注采井网完善、充分利用水平井挖潜等方式,对研究区进行了井网三维立体重组加密调整。根据油藏特点,在兼顾经济效益的前提下,主力油砂体采用二元复合驱,其他非主力油砂体进行水驱调整挖潜。采用正交设计方法优化注入参数。研究表明,采用井网重组与二元驱复合增效技术,能够大幅度提高高含水油藏采收率,比"复合驱"与"井网调整"二者单独作用之和高出2.19%。It is difficult to significantly enhance oil recovery of reservoirs with high water-cut at late production period.This paper presents a successful example to demonstrate the effectiveness of integrating well pattern rearrangement with binary combination flooding in Shuanghe oilfield.Based on the overlap of pay zones and differences of their petrophysical properties,as well as the large vertical production performance variation from one pay zone to the another,we rearranged the well pattern through layer series subdivision and recombination in similarity principle,adjusted injection production system and designed horizontal infill wells.According to the characteristics of the reservoirs and balancing economic benefits,binary combination flooding was carried out in the major pay zones while water flooding adjustment was performed in the other non-major pay zones.The injection parameters of binary combination flooding were optimized by using the orthogonal design method.Study results indicate that this technique can improve the recovery factor greatly,with amplitude of 2.19% higher than the sum of well pattern rearrangement and binary combination flooding.

关 键 词：井网重组 二元驱 采收率 高含水油藏 双河油田 

分 类 号：TE341[石油与天然气工程—油气田开发工程]