DEVELOPMENT OF AN IN-SITU WATERJETS SYSTEM FOR PERFORATION

开发用于穿孔的原位水射流系统

• 批准号: 07555323
• 负责人: MATSUKI Koji
• 金额: $ 2.3万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555323/
• 关键词: Natural gas dissolved in water; Perforation; Waterjets; Horn nozzle; Dynamic impact force; Noise; Spectral analysis; Cavitation; 高圧水中; 天然ガス

To develop an in-situ perforation system for increasing natural gas production by using high pressure waterjets, laboratory perforation tests on a vinyl chloride casing pipe and measurements of impact pressure were carried out in a pressure vessel. Based upon the test results, an in-situ perforation system was then designed and preliminary in-situ tests were carried out for an injection well in the South Kanto natural gas field.The main results were summarized as follows :1. The perforated area becomes maximum at an ambient pressure of 2 to 3% of the driving pressure. When the standoff distance is increased, the maximum ambient pressure where no perforation occurred decreases and the perforated area increases at low ambient pressures. Horn nozzles are more effective than a conventional straight nozzle. A horn angle of 15ﾟ performs best both in perforated area and in the maximum ambient pressure.2. Dynamic components of impact pressure play a decisive and direct role in cutting materials under ambient pressure. Under the conditions where waterjets show high performance, the power spectral density of impact pressure has a peak, the frequency of which varies from a few kHz at low ambient pressures to about 23 kHz at high ambient pressures. The dynamic components seems to be related to effective cavitations for cutting materials under ambient pressure. The dynamic characteristic of noises is similar to that of impact pressure, which enables us to detect dynamic impact force during cutting materials by measuring noises outside a pressure vessel.3. Preliminary in-situ tests were conducted successfully. The injectivity of a poor injection well was recovered drastically by perforating the casing pipe with an in-situ waterjets system, which was designed according to the results in this study.

通过使用高压水夹管管道来开发用于增加天然气的原位穿孔系统，并根据测试结果进行了撞击管道的测量。 - 在南部Kantural气体场中进行了良好的注射测试。AIN结果总结如下：1。在周围的2％至3％的驾驶压力下，穿孔面积最大。呈现。冲击压力的频谱密度是峰值，在环境下，kHz环境压力与周围的有效腔体材料相关。在压力容器外面使用冲击力固化垫垫垫垫。3进行了近距离测试。它是根据这项研究的结果设计的。

项目成果

K.Okumura et al.: "Perforation of vimyl chloride casing pipe with high pressure water jet under high anbient pressure" Proc.The Karean-Japan Jcimt Sympo.on Rock Eag.473-479 (1996)

K.Okumura 等人：“高环境压力下用高压水射流对氯乙烯套管进行穿孔”Proc.The Karean-Japan Jcimt Sympo.on Rock Eag.473-479 (1996)

奥村清彦 他: "ウォータージェットによる水溶性天然ガス井硬質塩化ビニルケーシングパイプのパ-フォレーションに関する基礎的研究" 石油技術会誌. 61巻・3号. 211-222 (1996)

Kiyohiko Okumura等人：“使用水射流对水溶性天然气井进行硬质氯乙烯套管射孔的基础研究”，日本石油技术学会杂志，第61卷，第3.211-222期（ 1996）

奥村清彦,松木浩二,久米信一: "ウォーターシュットによる水溶性天然ガス♯ケーシングパイプのパ-フォレーションに関する基礎研究" 石油技術協会詩. (発表予定). (1996)

Kiyohiko Okumura、Koji Matsuki、Shinichi Kume：“Waterschut 水溶性天然气套管穿孔的基础研究”日本石油技术协会诗歌（1996 年）。

Okumura, K.et al: "A fundamental study on in-situ perforation of a vinyl chloride casing pipe with high pressure water jet" Journal of The Japan Association of Petroleum Technology. 61-3. 211-222 (1996)

Okumura, K.等人：“高压水射流氯乙烯套管原位穿孔的基础研究”日本石油技术协会杂志。

K. Okumura et al.: "Performtion of vinyl chloride using pipe with high pressure water jet under high ansicnt pressure" Proc. The Korea Japan Joint Sympo on Rock Enjiecing. 473-479 (1996)

K. Okumura 等人：“在高压力下使用高压水射流管道执行氯乙烯”Proc。