西南石油大学学报(自然科学版)

• 油气化学工程 • 上一篇    下一篇

高温高盐可动凝胶配方研究与应用

罗云1 *,罗文利2,王强2,刘锐1   

  1. 1. 西南石油大学石油与天然气工程学院,四川成都610500
    2.“提高石油采收率”国家重点实验室·中国石油勘探开发研究院,北京海淀100083
  • 出版日期:2016-04-11 发布日期:2016-04-11
  • 通讯作者: 罗云,E-mail:luoy@vip.163.com
  • 基金资助:

    中国石油天然气股份有限公司科学研究与技术开发项目(07 01Z 01 06)。

Study and Application of Movable Gel for High-Temperature and#br# High-Salt Gasikule Reservoirs

LUO Yun1*, LUO Wenli2, WANG Qiang2, LIU Rui1   

  1. 1. School of Petroleum and Natural Gas Engineering,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. State Key Laboratory of Enhanced Oil Recovery,Research Institute of Petroleum Exploration and Development,PetroChina,Haidian,
    Beijing 100083,China
  • Online:2016-04-11 Published:2016-04-11

摘要:

通过室内实验,研究了聚合物分子量、聚合物浓度、交联剂用量及pH 值等因素对耐高温有机交联剂HT 2008
与高分子量星形抗温耐盐聚合物CA 2588 形成的凝胶黏度和成胶时间的影响,确定了尕斯库勒E13
油藏高温高盐可动凝胶调驱体系的基本配方及性能;环境扫描电镜结果表明,高分子量星形抗温耐盐聚合物CA 2588 和耐高温有机
交联剂HT 2008 能够形成稳定的互穿网络体型结构,该可动凝胶体系,在矿化度为117 000 mg/L(且钙镁离子含量高
达3 340 mg/L)、pH 值为7.80、实验温度为126 ℃ 条件下,5 d 时的黏度达到最高值43 900 mPa·s,180 d 时凝胶黏度为
43 500 mPa·s,耐温耐盐性能好,稳定性好;在尕斯库勒油田E13油藏进行深部调驱现场应用后,取得预期效果。

关键词: 尕斯库勒油田E13油藏, 星形抗温耐盐聚合物, 耐高温有机交联剂, 可动凝胶

Abstract:

Abstract:A novel movable gel for high-temperature and high-salt reservoirs is proposed in this paper. The movable gel consists
of the star-polymer(CA 2588)with temperature-resistance and salt-resistance and organic crosslinking agent(HT 2008).
Systemic investigation was carried out to examine the influence of star-polymer molecular weight,star-polymer concentration,
crosslinker dosage,and pH value on gel viscosity and gelation time. It was observed clearly by the environmental scanning
electron microscope that the interpenetrating polymer network structure was formed within the movable gel. The viscosity of
the movable gel(0.2% CA 2588+0.66% HT 2008)reached the peak value of 43 900 mPa·s in brine salinity of 117 000 mg/L
at 126 ℃. In addition,no obvious decrease in the viscosity of movable gel was found after 180 days. The movable gel with
star-polymer(CA 2588)and organic crosslinking agent(HT 2008)was used for deep profile control and gel-flooding in
Gasikule E13reservoirs,and achieved the desired effect.

Key words: Gasikule E13reservoirs, star-polymer with temperature-resistance and salt-resistance, organic crosslinking agent,
movable gel

中图分类号: