SU960426A1 - Instrument for testing wells - Google Patents

Description

(54) WELL RESEARCH DEVICE

one

FIELD OF THE INVENTION The invention relates to the oil industry, namely, devices for exploration of deep well pumps.

A known device for determining the depth of the wells, containing a weight-11 lowered on a cable.

 Also known is a well testing apparatus, a stranded body lowered onto a wire.

The device allows production of liquid level, depth, pump suspension and bottom hole 121.

The disadvantage of the known device is its complex structure.

The aim of the invention is to simplify the design. . .

The goal is achieved by the fact that the casing is made in the form of a hollow cylinder with an upper cone tip and stops on the inner surface, with a cylindrical weight lowered onto the wire and a piston with a hole for centering the load inside the cylinder, with the piston mounted for longitudinal movement between the stops .

The drawing shows a schematic of a well survey / incision tool.

The device consists of a load with a loop 2 installed inside the hollow cylinder-casing 3 with a cone coming with a sharp tip 4 of the piston 5, which has the ability to move longitudinally between the ring stops 6 and 7,

In order to use the Appliance c. tubing pipes of different diameters cone tip can

10 to be made interchangeable with a longitudinal slit 8 with a width not less than the diameter of the wire used in the well survey and to be threaded on the thread cut on the outer surface of the upper end of the cylinder.

The device works as follows.

With the production of routine repair of wells, after lifting the in-hole well. pump / device using

20, the Yakovlev apparatus is lowered into the well through tubing. The device, when it encounters a fluid level, stops, thanks to the air cushion inside the hollow cylinder 2, the wire tension decreases and the depth of the fluid level in the well is judged by its length.

Claims (1)

After immersing the device in the fluid of its movement. For a short time, the unit stops and, during this period of time, the device acquires its original form and continues to move from no to 3. Upon reaching the insertion pump landing unit, the device is inserted into it, and by loosening the wire tension and its length, the suspension depth of the pipes is judged. At the same time, a hollow cylinder with a cone landing tip b completely covers the spring bark, and the weighed load 1 from the rest of the instrument assembly lowers itself down to the bottom and to relax the wire, its length is set to the bottom hole. proceed to lift the load 1. In this case, the load, the income to the piston, is centered by it and is directed inside the cylinder. He, the income with the piston to the stop ring, rises with the cylinder to the surface. As a result, in the zone of the spring core of the plug-in pump, the wire finds the device from the inside-cylinder casing during the entire process of measuring and lifting, which prevents its engagement and the occurrence of an emergency situation. The use of the instrument on the polyslach ensures the complexity of the exploration of deep-well wells without lifting axial-compressor pipes, which makes it possible to carry out measurements of the depth of pipe suspension and the bottom hole depth in one descent. All this reduces the number of triggers for research. Claims of the invention A well testing apparatus comprising a housing lowered onto a wire, characterized in that, in order to simplify the construction, the housing is designed as a hollow cylinder with an upper conical tip and stops on the inner surface, a cylindrical weight lowered onto the wire and a piston mounted inside the cylinder with a hole for centering the load, while the piston is mounted for longitudinal movement between the stops. Sources of information taken into account during the examination 1. USSR author's certificate No. 161331, cl. E 21 B 47/04, 1963. 2, USSR Copyright Certificate No. 729339, cl. E 21 B 47/04, 1978,