Abstract: The bore hole tracer injection apparatus is a mechanical device for inserting a tracer agent into a bore hole at a predetermined depth. Outer and inner cylinders have side ports, with the side ports of the cylinders misaligned to prevent fluid escape from the inner cylinder until desired. The bottom of the inner cylinder includes a filler passage. A line passes through the top of the outer cylinder and attaches to a rod across the top of the inner cylinder, above the closed top thereof. The inner cylinder is filled with a tracer agent, and the apparatus is lowered into the bore hole to the desired depth. A weight is then dropped down the line, and jars the outer cylinder down around the inner cylinder when it contacts the top of the outer cylinder. This aligns the side ports of the cylinders to allow escape of the tracer agent therefrom.

Abstract: The bore hole tracer injection apparatus is a mechanical device for inserting a tracer agent into a bore hole at a predetermined depth. Outer and inner cylinders have side ports, with the side ports of the cylinders misaligned to prevent fluid escape from the inner cylinder until desired. The bottom of the inner cylinder includes a filler passage. A line passes through the top of the outer cylinder and attaches to a rod across the top of the inner cylinder, above the closed top thereof. The inner cylinder is filled with a tracer agent, and the apparatus is lowered into the bore hole to the desired depth. A weight is then dropped down the line, and jars the outer cylinder down around the inner cylinder when it contacts the top of the outer cylinder. This aligns the side ports of the cylinders to allow escape of the tracer agent therefrom.