摘要：Perforating with an abrasive water jet (AWJ) has some advantages over conventional perforation methods, such as larger hole diameters, no crushed zone, etc. Many investigations have been conducted on such jet perforations without ambient pressures. This paper presents the experimental results of perforation with AWJs under ambient pressures to simulate practical conditions. The authors designed a new container that is able to stand 20 MPa in order to lay the casing and natural limestone samples. In the experiments, we changed the nozzle pressure drop, nozzle diameter, standoff distance, blasting time, and ambient pressure, etc., to test their influences on the perforation depth and the time to penetration of the casing. The results show that two parameters, nozzle pressure drop and diameter, are the critical factors affecting the perforation depth. That is, the depth will increase with the pressure drop and diameter going up. But the standoff distance and ambient pressure have little effect on the depth within the range of this experiment. In addition, the casing can be penetrated normally in less than 1 min. Such results prove that abrasive water jet perforation can be used in deep wells. This research also can provide a practical reference when performing AWJ perforating operations, especially in the hydrajet multistage fracturing technology extensively applied in limestone reservoirs in recent years.

关键字：abrasive water jet ambient pressure casing limestone experiments

ISSN号：1044-5110

卷、期、页：卷: 25 期: 7 页: 617-627

发表日期：2015-01-01

期刊分区（SCI为中科院分区）：四区

收录情况：SCI（科学引文索引印刷版）,ESI（基本科学指标数据库）,EI（工程索引）,SCIE（科学引文索引网络版）

发表期刊名称：ATOMIZATION AND SPRAYS

参与作者：牛继磊

通讯作者：邵尚奇

第一作者：黄中伟,李根生,史怀忠,宋先知

论文类型：期刊论文

论文概要：黄中伟,李根生,史怀忠,牛继磊,宋先知,邵尚奇，ABRASIVE WATER JET PERFORATION EXPERIMENTS UNDER AMBIENT PRESSURES，ATOMIZATION AND SPRAYS，2015，卷: 25 期: 7 页: 617-627

论文题目：ABRASIVE WATER JET PERFORATION EXPERIMENTS UNDER AMBIENT PRESSURES