新疆石油地质 ›› 2020, Vol. 41 ›› Issue (3): 344-348.doi: 10.7657/XJPG20200314

• 油藏工程 • 上一篇    下一篇

海上稠油油田蒸汽吞吐产量确定新方法

郑伟, 谭先红, 王泰超, 朱国金, 张利军   

  1. a.中海油研究总院有限责任公司 开发研究院,北京 100028;b.海洋石油高效开发国家重点实验室,北京 100028
  • 收稿日期:2019-09-28 修回日期:2020-01-10 出版日期:2020-06-01 发布日期:2020-06-05
  • 作者简介:郑伟(1984-),男,山东五莲人,高级工程师,博士,海上油气田开发,(Tel)010-84524086(E-mail)zhengwei8@cnooc.com.cn
  • 基金资助:
    国家科技重大专项(2016ZX05025-004);中国海洋石油总公司重大科技项目(2013-YXZHKY-013)

A New Method to Determine Initial Production of Steam Stimulation in Offshore Heavy Oilfield

ZHENG Wei, TAN Xianhong, WANG Taichao, ZHU Guojin, ZHANG Lijun   

  1. a.Development Research Institute, CNOOC Research Institute Co. Ltd., Beijing 100028, China; b.State Key Laboratory of Offshore Oil Exploitation, Beijing 100028, China
  • Received:2019-09-28 Revised:2020-01-10 Online:2020-06-01 Published:2020-06-05

摘要:

针对目前蒸汽吞吐产量预测模型假设条件简单、普适性差等问题,一般采用测试法和类比法综合确定海上稠油油田蒸汽吞吐初期产量。由于目前海上油田通常只开展常规测试,无法直接获得热采开发初期产量。笔者提出海上稠油油田蒸汽吞吐初期产量确定新方法,建立蒸汽吞吐相对于常规开发的初期产量倍数预测模型,通过蒸汽吞吐产量倍数,将常规测试确定的产量转化为蒸汽吞吐产量。研究表明,蒸汽吞吐初期产量倍数主要受储集层渗透率、原油黏度、注入强度、蒸汽干度等因素影响,利用正交试验设计和多元回归等方法,建立海上稠油油田蒸汽吞吐初期产量倍数与油藏地质参数及注入参数之间的非线性预测模型,该模型经实际生产数据验证,预测误差小于5%,可靠性高,能够为海上稠油油田蒸汽吞吐初期产量的确定提供依据。

关键词: 海上稠油油田, 热采, 蒸汽吞吐, 测试产量, 初期产量, 产量倍数, 预测模型

Abstract:

In view of the simple assumption and poor adaptability of the current production prediction model for steam stimulation, methods of well testing and analogy are generally used to determine the initial production of steam stimulation in offshore heavy oilfields. At present conventional well testing is carried out in offshore oilfields, which cannot directly obtain initial oil production of thermal recovery. The paper proposes a new method to determine the initial production of steam stimulation for offshore heavy oilfields, and establishes a initial production multiple prediction model for steam stimulation compared with conventional development. The results show that the production multiple at the initial steam stimulation stage is mainly affected by reservoir permeability, oil viscosity, injection intensity, steam dryness and other factors. A nonlinear prediction model among initial production multiple, reservoir parameters and injection parameters is established by using the mathematical methods of orthogonal test design and multiple regression. The prediction error of the new model is less than 5% and the reliability is high. The new method can provide basis for the accurate determination of the initial production of the offshore steam stimulation.

Key words: offshore heavy oilfield, thermal recovery, steam stimulation, tested production, initial production, production multiple, predic- tion model

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