摘要
在底水油藏开发的过程中,油井面临的核心问题是底水锥进速度快、临界产量低、无水采油期短等难题。底水油藏由于存在底水,底水的锥进是底水油藏开发不可避免的问题。油井产水后,含水率迅速上升而导致油井关井。为了提高油井的产量,希望尽可能延缓油井的见水时间。在前人研究的基础上,根据带隔板底水油藏油井见水时间和临界产量计算公式,推导出了带隔板底水油藏油井合理的隔板半径计算公式,该公式可计算出底水油藏设置隔板半径时存在最优值。通过实例证明,当油井的隔板半径设置为合理半径,油井以临界产量生产时,油井的见水时间最晚,有利于提高采收率。
In the development of bottom water oil reservoir,the fast bottom water coning,the low critical yield and short-term water- free oil etc. problems were faced. Due to the existence of bottom water,bottom water coning is an inevitable problem to bottom water reservoir development. After the wells produce water,water cut increases rapidly and causes well shut-in. In order to enhance the oil well production,the water breakthrough time must be delayed as far as possible. Based on the previous research, and the calculation formula of the water breakthrough time and critical production rate of bottom water reservoir with barrier,a reasonable barrier radius formula of bottom water reservoir with barrier was derived. The formula could calculate the optimal value of the bottom water reservoir barrier radius. Calculation example showed when the oil wells chose reasonable barrier radius and critical production, the water breakthrough time was the most latest.
出处
《钻采工艺》
CAS
北大核心
2014年第6期52-54,4,共3页
Drilling & Production Technology
基金
国家重大专项“复杂结构井优化设计与控制关键技术”(2011ZX05009-005)
中国-加拿大CMG合作基金“Foundation CMGresearch chair in non-conventional reservoir modeling”部分研究成果
关键词
底水油藏
临界产量
隔板半径
见水时间
油井
bottom water reservoir,critical production,barrier radius,water breakthrough time,oil well
