第39参第5期 2017年9月
石油钻采工艺
OIL DRILLING & PRODUCTION TECHNOLOGY
文章编号：10007393(2017)05060004
DOI:10.13639/j.odpt.2017.05.013
分层采油井下油嘴直径白
的设计方法
付亚荣李仰民’马永忠’夏健”杨中峰王达
1.中国石油华北油田公司第五采油广；2.中国石油华北油田公司开发事业部
Vol. 39 No. 5 Sep.2017
引用格式：付亚荣，李民，马永患，夏健，杨中峰，王达.分层采油并下油嘴直径的设计方法[J］.石油钻采工艺，2017,39(5):600-603
摘要：为有效控制储层物性不同的2套含油系各油层产液量，达到抑制高含水油层、释放低含水油层的日的，借鉴气井井下节流器和注水并分层注水水嘴的设计方法及工作原理，提出了应用并下油嘴控制各油层产液量的技术思路。依嘉不同油层渗造率、有效厚度、地层压力的差别建立数学模型，首先按达西定律计算不同油层的产液量，然后按不同产液量井下油嘴的过流面积计算其前后压差，再通过控制2个油层的合理生产压差，得到高渗层、低渗层的能量守恒方程，从而优化分层采油井下油嘴的直径。现场应用12口分层采油并，单井平均日增油3.6t，含水平均下降22.1百分点，为分层采油提供了新的技术手段。
关键词：分层采油；井下油嘴；参数设计
中图分类号：TE355.5
文献标识码：A
A design method for choke diameter of separate layer production
FU Yarong , LI Yangmin', MA Yongzhong , XIA Jian, Yang Zhongfeng , WANG Da 1. No.5 Oil Prodaction Plan, PeroChina Huabei Oifield Company, Xinji 052360, Hebei, China; 2. Developmenr Deparfment, PebroChina Huabei Oilield Company, Renqiar 062552, Hebei, China
Citation: FU Yarong, LI Yangmin, MA Yongzhong, XIA Jian, Yang Zhongfeng, WANG Da. A design method for choke diameter of separate layer production [J ] . Oil Drilling & Production Technology, 2017, 39(5): 600-603.
Abstract: To control effectively the liquid production rate of each oil layer in two oil bearing series with different reservoir physi-cal properties, so as to inhibit high-water-cut oil layers and release low-water-cut oil layers, the technical idea of controlling the liquid production rate of each layer by means of the bottom hole choke was proposed referring to the design methods and working principles of downhole throttle of gas well and separate layer water injection choke of water injection well. Then, a mathematic model was established based on the differences of different oil layers in terms of permeability, effective thickness and reservoir pressure. Firstly, the liquid production rate of each oil layer is calculated according to Darcy's Law. Secondly, the pressure difference before and after the bottom hole choke is calculated based on the open area of bottom hole choke at different liquid production rates. And thirdly, the equation of e ssard d oo aes sae ead e og as oea between two oil layers rationally, so as to optimize the diameter of bottom hole choke used for separate layer production. This method is applied on site in 12 separate layer oil producers. And average oil increment of each well is 3.6 t and average water cut declines by 22.1%. It provides the new technology for separate layer production.
Key words: separate layer production; bottom hole choke; parameter design
基金项目：中国石油股份有限公司重大专项“分层采油工艺试验与应用”（编号：2015E-05-08) 中国发明专利：一种分层来沟并下油嘴直径的确定方法，201510507618.1。
第一作者：付重荣（1965-),高级工程师，主要从事油气田开发技术研究与应用工作。通讯地址：(052360)河北省年集市华北油田第五采
sh。电话; 0317-2742299, E-mail; cy5_fyr@petrochina.com.cn
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