Anti-pollution isotopic tracer injection device

Abstract

The invention provides an anti-pollution isotopic tracer injection device which comprises a box. A liquid storage cylinder and a pressure cylinder are arranged inside the box. An opening in one end of the liquid storage cylinder communicates with an inner cavity of the pressure cylinder. A liquid injection tube is connected into the liquid storage cylinder. A pressing plate is arranged inside the pressure cylinder. The upper end of the pressing plate is connected with a linkage rod. The upper portion of the linkage rod is connected with a drive device. The bottom of the pressure cylinder is connected with a liquid outlet tube communicating with a screen drum arranged inside the box. The lower portion of the screen drum is connected with a blending chamber. A liquid outlet is formed in one side of the blending chamber. A one-way valve is arranged at the front end of the liquid outlet. A receding plate is arranged on the lower portion of the liquid outlet tube and on the screen drum. The anti-pollution isotopic tracer injection device has the beneficial effects that in the isotopic tracer injection process of the liquid storage cylinder filled with an isotopic tracer, operation is the same as that of the pressure cylinder, isotopic tracer liquid is not spilled out of an oil well along a pipeline under the effect of the pressing plate, the liquid containing the isotopic tracer is fully and uniformly blended in the blending chamber in the device and drained out through the liquid outlet tube unidirectionally, and the phenomenon that the liquid flows into soil, thereby influencing the environment and causing environment pollution is avoided.

Description

technical field [0001] The invention belongs to the technical field of auxiliary devices for isotope tracer measurement between wells, and in particular relates to an anti-pollution isotope tracer injection device. Background technique [0002] Oilfield interwell tracing technology is a real-time tracking method, which can effectively evaluate the water injection effect and the corresponding relationship between injection and production in oilfield test well groups. It is of great significance to optimize the reservoir development plan and improve the ultimate recovery factor. [0003] At present, interwell tracer technology in oilfields in the world mainly uses isotope tracers, and effectively injecting isotope tracers into wellbores smoothly is an important part of interwell technology in oilfields. In the prior art, the isotope tracer is injected along with the water. During the injection, the injection device is prone to leakage under high pressure, and the isotope trace...

AI Technical Summary

Problems solved by technology

In the prior art, the isotope tracer is injected along with the water. During the injection, the injection device is prone to leakage under high pressure, and the isotope tracer will overflow from the oil well head with the action of water pressure. , and the operation process of isotope injection in the field operation is open, which will cause environmental pollution and also threaten the health of the staff

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