[1]李行船,尚会昌.阿根廷San Jorge 盆地凝灰质砂岩压裂测试特征分析[J].油气井测试,2019,28(04):1-6.[doi:10.19680/j.cnki.1004-4388.2019.04.001]
　LI Xingchuan,SHANG Huichang.Fracturing test characteristics analysis of tuffaceous sandstone in San Jorge Basin, Argentina[J].Well Testing,2019,28(04):1-6.[doi:10.19680/j.cnki.1004-4388.2019.04.001]
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阿根廷San Jorge 盆地凝灰质砂岩压裂测试特征分析()
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《油气井测试》[ISSN:1006-6977/CN:12-1485/TE]

卷:
28
期数:
2019年04期
页码:
1-6
栏目:
出版日期:
2019-08-25

文章信息/Info

Title:
Fracturing test characteristics analysis of tuffaceous sandstone in San Jorge Basin, Argentina
文章编号:
1004-4388(2019)04-0001-06
作者:
李行船; 尚会昌 
中国石化国勘阿根廷公司钻完井部 北京 100083
Author(s):
LI Xingchuan;  SHANG Huichang
Argentina Branch, Drilling and Completion Department of Sinopec International Exploration and Production Corporation,Beijing 100083,China
关键词:
San Jorge盆地;  水力压裂;  微裂隙;  脱砂;  滤失类型;  凝灰质砂岩;  优化设计
Keywords:
San Jorge Basin;  hydraulic fracturing;  microfracture;  screen out fracturing;  fluid loss type;  tuffaceous sandstone;  optimized design
分类号:
TE353
DOI:
10.19680/j.cnki.1004-4388.2019.04.001
文献标志码:
A
摘要:
针对San Jorge 盆地SinopecArg工区凝灰质砂岩储层压裂完井有效期普遍较短以及低效改造的实际情况，从加砂规模、裂缝扩展情况等方面对盆地南翼15个区块中抽取的8个区块93口井共计216井次的测试压裂资料进行统计分析，发现工区内大致存在5种水力裂缝扩展或滤失特征，其中水力裂缝垂向上的过度扩展及先存微裂隙活化是压裂作业过程中的两大重要特征。从压裂测试响应机制上，认为凝灰质的存在导致垂直裂缝高度增加及先存微裂隙重新活化是加剧作业过程中脱砂风险的主要原因，最终影响工艺成功率及作业有效率。该工区的压裂测试特征分析为后续储层优化改造方案设计和施工参数控制提供了方向。
Abstract:
The effective period of the fracturing and completion of the tuffaceous sandstone reservoir in the SanopercArg work area of the San Jorge Basin was generally short and the stimulation efficiency was low. In order to solve these problems, the statistical analysis of 216 times of test fracturing data of 93 wells in 8 extracted blocks from 15 blocks in the south wing of the basin was carried out from the aspect of sand addition and fracture propagation. It was found that there were five types of hydraulic fracture propagation or fluid loss characteristics in the work area, of which the excessively extended hydraulic fractures and the activation of preexisting microfissures are two important features in the fracturing process. Based on the response mechanism of the fracturing test, it was considered that there are two main reasons for increasing the risk of screenout fracturing during the operation; one is that the presence of tuff will lead to an increase in the height of the vertical fracture; the other is the reactivation of the preexisting microfractures. These two factors ultimately affect the process success rate and operational effectiveness. The analysis of the fracturing test characteristics of the work area provides the direction for the fracturing design optimization and quality control.

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备注/Memo

备注/Memo:
2018-10-25收稿，2019-06-18修回，2019-07-06接受，2019-08-20 网络版发表
李行船，男，1971年出生，博士，高级工程师，2007年毕业于中国地震局地质所构造地质专业，现从事油气井工程技术应用等工作。电话：13811789289；Email：xcli.sipc@sinopec.com。通信地址：北京市海淀区志新西路1号院1-4-401，邮政编码：100083。
更新日期/Last Update: 2019-09-03