双基团二次交联调剖体系试验研究

陈东明

陈东明. 双基团二次交联调剖体系试验研究[J]. 石油钻探技术, 2014, 42(4): 91-96. DOI: 10.3969/j.issn.1001-0890.2014.04.017
引用本文: 陈东明. 双基团二次交联调剖体系试验研究[J]. 石油钻探技术, 2014, 42(4): 91-96. DOI: 10.3969/j.issn.1001-0890.2014.04.017
Chen Dongming. Experimental Study on Double-Group Secondary Crosslinking System for Profile Control[J]. Petroleum Drilling Techniques, 2014, 42(4): 91-96. DOI: 10.3969/j.issn.1001-0890.2014.04.017
Citation: Chen Dongming. Experimental Study on Double-Group Secondary Crosslinking System for Profile Control[J]. Petroleum Drilling Techniques, 2014, 42(4): 91-96. DOI: 10.3969/j.issn.1001-0890.2014.04.017

双基团二次交联调剖体系试验研究

基金项目: 

中国石油天然气集团公司重点项目“北布扎奇稠油油藏适应性开发方式试验及水平井应用技术研究”(编号2008B-4403)部分研究内容。

详细信息
    作者简介:

    陈东明(1985- ),男,河北沧州人,2007年毕业于中国石油大学(华东)石油工程专业,2010年获中国石油大学(华东)油气田开发工程专业硕士学位,工程师,主要从事油藏工程、提高采收率方面的研究。

  • 中图分类号: TE358+.3

Experimental Study on Double-Group Secondary Crosslinking System for Profile Control

  • 摘要: 针对裂缝性油藏调剖堵水措施成功率低、效果差,堵剂在注入过程中漏失严重等问题,研制了一种利用部分水解聚丙烯酰胺(HPAM)的2个不同基团分别和2种交联剂反应形成高强度的聚合物调剖体系。经过组分用量分析,确定适用配方为:5 000~7 000 mg/L HPAM+125 mg/L有机铬交联剂+80 mg/L苯酚+120 mg/L乌洛托品+80 mg/L增强剂,考察了温度、pH值、矿化度对该调剖体系性能的影响,对比了双基团二次交联调剖体系与2种交联剂单独使用时调剖体系的成胶性能。采用单管和双管并联岩心封堵试验模拟调剖体系的调剖过程,试验结果表明,调剖体系对单管岩心的封堵率高于99%,突破压力大于36 MPa/m;对双管并联岩心中高渗岩心的封堵率在98%以上,对低渗岩心的封堵率低于15%。研究表明,双基团二次交联调剖体系可以降低在裂缝中的漏失,减轻进入微裂缝对油流通道造成的堵塞,在裂缝性油藏调剖堵水中具有良好的应用前景。
    Abstract: For fractured reservoirs,water shutoff and profile control measures often failed and are ineffective due to serious leakage of plugging agent in formation.To address this problem,two groups of partially hydrolyzed polyacrylamide(HPAM)are reacted with two crosslinking agents to generate a high-strength polymer plugging agent.Through analysis,an optimum formula of ingredients is defined as follows:5 000-7 000 mg/L HPAM+125 mg/L organic chrome crosslinking agent+80 mg/L phenol+120 mg/L urotropine+80 mg/L intensifier.Influences of temperature,pH value and salinity on the profile control system were studied,and the gelling performance of double-group secondary crosslinking system was compared with two crosslinking agents separately.The single-barreled and double-barreled parallel cores were used in plugging test to simulate the profile control,the results show that plugging rate is over 99% and break-through pressure gradient higher than 36 MPa/m for single-barreled cores.For the double-barreled parallel cores,the plugging rate of high permeability core is over 98%,and that of low permeability core is less than 15%.It is concluded that double-group secondary crosslinking system can prevent plugging agent from leaking in the fractures,and greatly reduce possibility of plugging the passageway of oil and gas when it penetrates into the micro-fractures.This system is prospective for profile control in fractured reservoirs.
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出版历程
  • 收稿日期:  2013-09-05
  • 修回日期:  2014-04-06
  • 刊出日期:  1899-12-31

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