发明授权
- 专利标题： Surface located isotope tracer injection apparatus
- 专利标题（中）： 表面位置同位素示踪剂注入装置
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申请号： US466237申请日： 1990-01-17
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公开(公告)号： US5049743A公开(公告)日： 1991-09-17
- 发明人: Lawrence Taylor, III , John W. Chisholm , Philip T. Thayer
- 申请人： Lawrence Taylor, III , John W. Chisholm , Philip T. Thayer
- 申请人地址： TX Houston
- 专利权人： ProTechnics International, Inc.
- 当前专利权人： ProTechnics International, Inc.
- 当前专利权人地址： TX Houston
- 主分类号： G21H5/02
- IPC分类号： G21H5/02
摘要：
The present disclosure is directed to a method and apparatus for controllably injection a radioactive isotope tracer fluid into a fracture fluid, a manifold or mud flow line connected to a well. It is best used in measuring well stimulation procedures based on injection of tracer isotopes so that stimulation performance data can be obtained by gamma ray spectroscopic measuring instruments lowered in the well borehole after fracture. The present apparatus utilizes a tank supply of tracer fluid connected through a pump into the mud line wherein the pump drives a tachometer, and utilizes a CPU to respond to pumping rate measurements and adjust the pumped rate of the tracer fluid.