新疆石油地质

›› 2015, Vol. 36 ›› Issue (3): 1-1.doi: 10.7657/XJPG20150313

• 论文 •    

异步交联深部调剖体系的室内实验

陈泽华，赵修太，王增宝   

  1. (中国石油大学 石油工程学院,山东 青岛 266580)
  • 出版日期:2019-01-01 发布日期:1905-07-13

Laboratory Experiment on Asynchronous Crosslinking System for Deep Profile Control

CHEN ZehuaZHAO XiutaiWANG Zengbao   

  1. (College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong266580, China)
  • Online:2019-01-01 Published:1905-07-13

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摘要： 用有机铬和酚醛树脂交联剂，配制了一种异步交联深部调剖体系，其配方为5 000 mg/L 部分水解聚丙烯酰胺+0.02%有机铬+0.2%酚醛树脂。实验结果表明，该体系一次成胶时间为30 h左右，成胶强度为0.021 MPa；二次成胶时间为90 h，成胶强度为0.062 MPa. 考察了该调剖体系成胶性能的影响因素，包括温度、矿化度、pH值等。该体系的特点是交联剂总用量低，成本低；一次交联使调剖体系的黏度在短时间内快速上升，从而防止堵剂大量漏失，使其大量进入低渗透层；二次交联使深部位的冻胶成胶强度提高。该体系适合封堵大孔道或者裂缝发育的强非均质油藏。

Abstract: An asynchronous crosslinking system for deep profile control using organic chrome crosslinking agent and phenolic resin crosslinking system was developed . The following formula was screened out as the optimum system:5000mg/L HPAM+0.02%organic chrome +0.2%phenolic resin. The experiment results show that the first crosslinking time of the system is about30h, and the second crosslinking time is about 90h; the first crosslinking strength is0.02MPa, and the second crosslinking strength is0.062MPa. The influencing factor of the gelling properties of the system, including temperature, salinity and pH were investigated. The character of the system is that the total dosage of the crosslinking agent is low, and the cost is low; the viscosity of the system can increase quickly in short term through the first crosslinking, which inhibit the leakage of the gel and its infiltration into low permeable layers; the strength of the gel can be enhanced greatly through the second crosslinking. The system can be applied to the the strong heterogeneous formation with large pores or developed fractures

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