[1]周朝,吴晓东,张同义,等.排液采气涡流工具结构参数优化实验研究[J].石油钻探技术,2018,46(06):105-110.[doi:10.11911/syztjs.2018142]
 ZHOU Chao,WU Xiaodong,ZHANG Tongyi,et al.Experimental Research for Parameter Optimization of the Vortex Tool for Drainage Gas Recovery[J].Petroleum Drilling Techniques,2018,46(06):105-110.[doi:10.11911/syztjs.2018142]
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排液采气涡流工具结构参数优化实验研究(/HTML)
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《石油钻探技术》[ISSN:1001-0890/CN:11-1763/TE]

卷:
46卷
期数:
2018年06期
页码:
105-110
栏目:
油气开发
出版日期:
2018-11-25

文章信息/Info

Title:
Experimental Research for Parameter Optimization of the Vortex Tool for Drainage Gas Recovery
作者:
周朝12 吴晓东2 张同义1 赵旭1
1. 中国石化石油工程技术研究院, 北京 100101;
2. 中国石油大学(北京)石油工程学院, 北京 102249
Author(s):
ZHOU Chao12 WU Xiaodong2 ZHANG Tongyi1 ZHAO Xu1
1. Sinopec Research Institute of Petroleum Engineering, Beijing, 100101, China;
2. College of Petroleum Engineering, China University of Petroleum(Beijing), Beijing, 102249, China
关键词:
气井排液采气涡流工具井筒压降临界携液流量螺旋角
Keywords:
gas welldrainagegas recoveryvortex toolwellbore pressure dropcritical flow ratehelix angle
分类号:
TE377
DOI:
10.11911/syztjs.2018142
摘要:
目前对涡流排液采气的机理认识不清,且鲜有分析涡流工具结构参数对排液效果的影响方面的研究报道,无法有效指导现场应用。为此,基于相似原理建立了涡流排液采气物理模拟实验装置,测试了安装不同涡流工具后的井筒压降和流量,分析了涡流工具螺旋流道宽度、流道两侧密封性和螺旋角对排液效果的影响;选取了排液最优的涡流工具并测试了临界携液流量;同时,根据两相流体动力学理论建立了最优螺旋角理论模型。实验发现:涡流工具螺旋流道两侧有效密封、并在井筒压降较小的前提下,缩小螺旋流道的流动截面可以提高涡流工具的排液效果;实验最优螺旋角为45°,与理论模型计算结果吻合较好;使用优化后的涡流工具井筒压降降幅约为9.6%,排液量约提高12.4%,临界携液流量约降低20%。研究结果表明,优化后的涡流工具增强了排液能力,最优螺旋角理论模型结果可靠,可为涡流工具设计和现场应用提供理论指导。
Abstract:
Mechanistic studies of vortex drainage gas recovery are insufficient and cannot effectively create guidelines for field application.What is lacking is an analysis that aims to research the influence of the structure parameters of the vortex tool on the drainage effect.Therefore,based on the theory of similarity,physical simulation experiments were designed and the experimental facilities were set up.Then impact of installing the vortex tool were examines,namely the wellbore pressure drop and the flow rate curves.Later,the influences of helical flow channel scale,sealing on both sides of flow channel and helix angle of vortex tool on the drainage effect were analyzed.It was possible then to determine the critical flow rate after installing the optimized vortex tool.The theoretical model for calculating the optimal helical angle was established based on the two-phase fluid dynamic theory.The experiment showed that the drainage effect of vortex tools could be improve while enhancing the leak-tightness and decreasing the size of the flow channel under the conditions of low wellbore pressure drop.The experimental optimal helix angle was 45°,which was in good agreement with the results of the theoretical model;after installing the optimized vortex tool,the wellbore pressure drop would decrease by about 9.6%,the liquid flow rate would increase by about 12.4%,and the critical flow rate would decrease by about 20%.The optimized vortex tool enhanced the drainage capability and the results of optimal theoretical model for helix angle were reliable,thus providing theoretical guidance for design and field application of the vortex tool.

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备注/Memo

备注/Memo:
收稿日期:2018-04-17;改回日期:2018-10-04。
基金项目:国家科技重大专项"高压低渗油气藏固井完井技术"(编号:2016ZX05021-005)、"海相碳酸盐岩超深油气井关键工程技术"(编号:2017ZX05005-005)和中国石化科技攻关项目"凝析气藏水平井自适应调流控水完井技术研究"(编号:P18068)资助。
作者简介:周朝(1988-),男,河北保定人,2010年毕业于东北石油大学石油工程专业,2017年获中国石油大学(北京)油气田开发工程专业博士学位,助理研究员,主要从事采油采气工程和完井工程技术研究。
E-mail:zhouchao-joe@163.com。
更新日期/Last Update: 1900-01-01