长庆油田侏罗系水平井改造工艺研究及效果分析  

Researches on Transformation Process and Analysis of Its Effect in Jurassic Horizontal Wells of Changqing Oilfield

作　　者：安杰[1] 王文雄[1] 赵乐 

机构地区：[1]中国石油长庆油田分公司油气工艺技术研究院 [2]中国油长庆油田分公司第一采油厂

出　　处：《低渗透油气田》2013年第3期119-123,130,共6页

摘　　要：长庆油田侏罗系油藏具有连片性差、物性变化大、边底水活跃、油水关系复杂等特点。直井开发含水普遍较高：水平井开发优于直井，可以有效地防止底水锥进，提高单井产量。侏罗系水平井的储层改造压裂容易出水，分段射孔（或酸化）油井供液不足，措施优化难度较大。本文通过对前期水平井改造效果的分析，深入地质的和工艺的研究，总结储层改造的难点．将侏罗系油藏的地质特征分为三类，有针对性地开展控水增油压裂工艺的技术研究，优化工艺参数．提出对应改造措施，现场试验效果较好，对提高侏罗系水平井储层改造效果具有一定意义。Jurassic reservoirs in Changqing Oilfield are characterised by poor continuity,great variations in petrophysical properties,active edge and bottom water,and complicated oil-water relationship.Vertical well development is generally with high water cut.Horizontal well development is better than vertical,and can effectively prevent from water coning and increase individual-well production rate.Fracturing in the Jurassic reservoir horizontal wells easily produces water.Oil wells with segmented perforations （or acidification）have less liquid supply.The optimization of the measures is quite difficult.Based on the analysis of preliminary results of the horizontal well stimulation,in-depth study of geology and technology process,the authors summarize the difficulties of the reservoir reconstruction.The geological characteristics of the Jurassic reservoirs are divided into three categories.Fracturing technologies with water controlling and oil increasing are carried out accordingly,and the process parameters are optimized.The corresponding transformation measures are put forward,which showed excellent result of on-site testing.

关 键 词：低渗透 侏罗系底水油藏 水平井 储层改造 水力喷射分段压裂 

分 类 号：TE341[石油与天然气工程—油气田开发工程]