特种油气藏 ›› 2020, Vol. 27 ›› Issue (4): 67-72.DOI: 10.3969/j.issn.1006-6535.2020.04.010

• 油藏工程 • 上一篇    下一篇

超稠油溶剂辅助SAGD启动技术油藏适应性研究

杨兆臣1, 于兵1, 吴永彬2, 王丽1, 张家豪1, 佟娟1, 姜丹1, 张崇刚3   

  1. 1.中国石油新疆油田分公司,新疆 克拉玛依 834000;
    2.中国石油勘探开发研究院,北京 100083;
    3.中国石油辽河油田分公司,辽宁 盘锦 124000
  • 收稿日期:2019-10-16 修回日期:2020-04-28 出版日期:2020-08-25 发布日期:2022-02-18
  • 作者简介:杨兆臣(1971—),男,高级工程师,1996年毕业于大庆石油学院地球物理勘探专业,2008年毕业于中国石油大学(北京)地质工程专业,获硕士学位,现主要从事稠油、超稠油开发实验及油藏工程方面的研究工作。
  • 基金资助:
    国家科技重大专项“稠油/超稠油开发关键技术”(2016ZX05012);中国石油科技项目“稠油注溶剂开采新技术研究”(2016B-1403)

Solvent-Assisted SAGD Startup Technology Adaptability in Super-Heavy Oil Reservoir

Yang Zhaochen1, Yu Bing1, Wu Yongbin2, Wang Li1, Zhang Jiahao1, Tong Juan1, Jiang Dan1, Zhang Chonggang3   

  1. 1. PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;
    2. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
    3. PetroChina Liaohe Oilfield Company,Panjin,Liaoning 12400,China
  • Received:2019-10-16 Revised:2020-04-28 Online:2020-08-25 Published:2022-02-18

摘要: 针对双水平井SAGD常规蒸汽循环预热启动存在的蒸汽预热降黏慢、循环预热时间长、蒸汽消耗量大、井间动用不均衡等问题,采用室内实验和数值模拟相结合的方法,对溶剂辅助SAGD预热启动技术的原理与适用性进行了研究。研究结果表明:溶剂辅助SAGD具有缩短预热时间、减少蒸汽用量、实现井间均匀连通的效果,适用于水平段井间渗透率不小于500 mD、含油饱和度不小于60%、50℃原油黏度为2.0×104~10.0×104mPa·s的超稠油油藏。形成的油藏筛选条件为其他稠油油藏开展溶剂辅助SAGD启动技术提供了筛选依据。

关键词: 溶剂辅助, SAGD, 启动阶段, 井间连通, 超稠油油藏

Abstract: In order to improve the low viscosity reduction rate of steam preheating, long preheating cycle, large steam consumption, uneven interwell producing degree and other problems in the dual horizontal-well SAGD with conventional steam cycle preheating, laboratory test and numerical simulation were combined to understanding the technical principle and adaptability of solvent-assisted SAGD preheating startup technology. Research indicates that the solvent-assisted SAGD is featured by small preheating cycle, low steam consumption and uniform interwell connectivity, which is applicable for the super-heavy oil reservoirs with permeability between lateral sections not less than 500 mD, oil saturation not less than 60% and the crude oil viscosity from 2.0×104 mPa·s to 10.0×104 mPa·s at 50 ℃. The reservoir screening principles could provide certain reference for other heavy oil reservoirs to implement solvent-assisted SAGD startup technology.

Key words: solvent-assisted, SAGD, startup stage, interwell connectivity, heavy oil reservois

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