王健,刘玮玮
WANG Jian,LIU Weiwei

• 1:中国石油集团渤海钻探工程有限公司井下作业分公司
• 2:中国石油集团华北油田分公司第三采油厂

摘要(Abstract)：

目前酸化压裂施工中,线性胶体系应用较广的有机铝类、复配类交联剂大多存在稳定性、耐温性差等缺点。为此,依据部分水解聚丙烯酰胺(HPAM)/有机锆弱凝胶的形成原理,合成有机锆交联剂ZCL-4,并将其与HPAM增稠剂、辅剂配置成TLG-1线性胶压裂。分别在90、120℃,170 s~(-1)恒速剪切60 min条件下,评价TLG-1线性胶压裂液的流变性能,最终黏度分别为75、48 mPa·s,显示其良好的耐温耐剪切性能。结果表明,TLG-1线性胶压裂液在90℃时,25%的砂比下,其沉降速率0.61 cm/min符合线性胶压裂液的静态悬砂要求。通过CN-6页岩气井现场试验验证TLG-1线性胶压裂液体系具有优良的造缝携砂性能。
At present, in the process of acid fracturing operation, most of the organic aluminum and compound crosslinking agents of widely applied linear-gel system are characterized by rather poor stability, unfavorable temperature resistance and so on. Therefore according to the forming theory of partially hydrolyzed polyacrylamide(HPAM)/organic zirconium weak gel, Organic Zirconium Crosslinker ZCL-4 was synthesized, and moreover it configured with the HPAM thickening agent and auxiliary agent into Linear-Gel Fracturing Liquid TLG-1. At 90 ℃, 120 ℃, under the condition of constant speed shearing of 170 s~(-1) for 60 min, the rheological properties of Linear-Gel Fracturing Liquid TLG-1 was evaluated respectively, and the final viscosities 75 mPa·s and 48 mPa·s were got, the much better temperature and shear resistances were shown. The results show that the static suspended sand requirements of TLG-1 were met at 90 ℃, 25% sand proportion and 0.61 cm/min sedimentation rate. The field test in Shale Gas Well CN-6 proves that TLG-1 system has excellent performances of producing seam and carrying sand.

关键词(KeyWords)： 页岩气;水力压裂;有机锆交联剂;线性胶压裂液;耐温耐剪切
shale gas;hydraulic fracturing;organic zirconium crosslinking agent;linear-gel fracturing fluid;temperature and shear resistances

Abstract:

Keywords:

基金项目(Foundation): 中国石油天然气集团公司科研项目“昭通示范区页岩气钻采工程技术现场试验”(2012F-47-02)

作者(Author): 王健,刘玮玮
WANG Jian,LIU Weiwei

DOI: 10.19597/j.issn.1000-3754.201904039

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