石油与天然气地质 ›› 1998, Vol. 19 ›› Issue (3): 190-195.doi: 10.11743/ogg19980304

• 论文 • 上一篇    下一篇

鄯善油田东区油藏注水开发的油水运动规律

孙卫1, 曲志浩1, 岳乐平1, 刘林玉1, 朱玉双1, 王洪建2, 陈杨艾2, 元连喜2, 朱永贤2   

  1. 1. 西北大学, 陕西西安710069;
    2. 吐哈油田开发事业部, 新疆鄯善838202
  • 收稿日期:1998-03-16 出版日期:1998-09-25 发布日期:2012-01-18

RULE OF OIL WATER MOVEMENT DURING WATERFLOODING IN EASTERN AREA OF SHANSHAN OILFIELD

Sun Wei1, Qu Zhihao1, Yue Leping1, Liu Linyu1, Zhu Yushuang1, Wang Hongjian2, Chen Yang'ai2, Yuan Lianxi2, Zhu Yongxian2   

  1. 1. Northwest University, Xi'an, Shaanxi;
    2. Department of Development Affairs, Tuha Oilfield, Shanshan, Xinjiang
  • Received:1998-03-16 Online:1998-09-25 Published:2012-01-18

PDF (PC)

895

被引次数

26

摘要：

随注水开发的深入,三间房组油藏产液呈现出含水上升、产量下降、注采关系长期不平衡的现状。分布于主河道砂体中的油井砂层厚、物性好、单井初产高、采出程度大、油层压降也大。注水开发中,注入水主要沿砂体延伸方向向压降大、物性好的油井突进。受沉积旋回控制,油藏中的Ⅰ,Ⅱ类储层多分布于每一油层组的中、下部,即第3或第4小层。这些小层产液量高、吸水强度大,造成开发中多为单层、单向含水上升。在油藏内,注入水主要是沿砂体展布方向由西向东、由低渗向高渗形成主渗通道。油藏产液量的变化与注水效果关系直接,主力产区含水上升是导致油藏产量下降的主要原因。

关键词: 注水开发, 产量变化, 油水规律, 注采关系, 油藏, 鄯善油田

Abstract:

As waterflooding further advances,a new situation including the rise of water-bearing layer,the declining of oil production and the unbalance between injection and production has appeared in the production of the reservoirs in the Sanjianfang Formation.The oil wells located at the main river channel sandbodies are characterized not only by thick sandstone and better physical properties,but also by high initial production of single well,high recovery percentage of reserves and big decrease of reservoir pressure.The injected water flows towards the wells which have good physical properties,and the reservoir pressure decreases mainly along the extensional direction of the sandbodies.Most of the first and second order reservoirs,controlled by sedimentary cycle,developed in the middle and lower parts of reservoir group,that is to say,in the third or fourth subbeds.These subbeds have high fluid production and injectivity,which results in the water rising mostly in the single layer or direction.The variation of reservoir fluid production is closely related to water flood response,and the rise of ground water is the fundamental cause leading to the decrease of oil production in the main oil-producing areas.