SU941557A1 - Apparatus for running instruments into well - Google Patents

Description

(54) DEVICE FOR DOWNLOADING THE DEVICES

one

The invention relates to the field of oil and gas production, in particular to the study of wells through the annulus.

Devices for exploration of flowing wells are known, including a device for passing an overpass, and an overpass is installed in the well when it is cased after exiting drilling 1.

However, the device cannot be used in wells operated by sucker-rod deep well pumps, since the tubing pipes, through which the initial stage of the descent of the device is carried out, are occupied by sucker rods connected to the deep well pump and to have an overpass well that is associated with an increase in the cost of its drilling and equipment.

A device for launching instruments into the well along the annular space between the casing and tubing includes a eccentric diverter installed at the bottom of the tubing in the form of a faceplate with an eccentrically located opening for fixing the gauges. When installing an eccentric faceplate, it is oriented with regard to azimuth 2.

Using this device does not require a lot of time and costly underground repairs, however, if the gap between the lifting tubes and casing (annulus) is greater than or equal to twice the diameter of the depth gauge, the relative position of the tubes is concentric, then during the descent and lifting of the depth gauge wire (cable) may overlap around the tubing due to the mismatch of the instrument's movement paths, i.e. an emergency situation. In this case, the device when removing

15 it is either cut to the surface or left in the well before special work is carried out with the help of an underground well repair team.

The purpose of the invention is to increase the reliability of the device by preventing the device from being overwhelmed during its descent.

Claims (2)

This goal is achieved by the fact that the device is equipped with additional eccentric diverters, freely installed .ieHni i iH on tubing pipes, the main and additional eccentres, the diverters are made in the form of sleeves with a longitudinal edge. The longitudinal edge of the sleeves on the outer end surface may have a leaf spring. FIG. 1 shows a device for lowering instruments into a well; in fig. 2 shows section A-A in FIG. one; in fig. 3 - main eccentric diverter; on Fig.4 additional eccentric diverter. The device for launching devices 1 into the well along the annular space 2 between casing 3 and tubing 4 includes a main eccentric diverter 5 and additional eccentric breakers 6. The main 5 and additional 6 eccentric diverters are made in the form of sleeves 7 with a longitudinal edge 8. Sleeves 7 are freely mounted on the tubing 4 between their coupling sleeves 9. The sleeve 7 of the main eccentric deflector is mounted on a special shank 10 mounted on the bottom Onze tubing equipped with a pump or filter. In order to prevent the instrument from overhanging around the tubing in the wellhead-pump interval, the condition Oby-Dy D Dggj must be observed; - internal diameter of the casing; Dv - nominal diameter of the shank and sleeves; Dnp diameter of the device. In case of a change in the internal diameter of the casing to prevent the cable from entering the gap between the casing and the device, the longitudinal edge 8 of the sleeves 7 may have a plastic spring 11 fixed by axis 12. The device works as follows When lowering the devices into the well due to eccentric deflectors 5 and 6, along the entire length of the tubing, the 4 naloglanes are pressed to one side of the casing 3, creating a channel for the movement of the instrument. 1. Since the pump-and-compressor unit has a considerable weight (up to several tens of tons), and the sleeves on the shank and pump tubes can freely rotate, the column of pump tubes is installed in the plane of the curvature of the wellbore in the lower part (in the fall) of it, at the top (like any eccentrically located load in the field of traction), creating a gentle (since the rigidity of the pump tubes is much less than the rigidity of the casing string and they are tightened by the weight of the pump unit, repeat all the bends of the casing string) his instrument. A longitudinal rib 8 with a leaf spring 11 divides the casing cavity into two parts and prevents the cable from overlapping around the tubing. The technical and economic efficiency of the invention consists in speeding up the research by reducing emergency situations. Apparatus for launching instruments into the well but annular space between the casing and tubing, including an eccentric diverter installed at the bottom of the tubing, characterized in that, in order to increase the reliability of the apparatus by preventing the device from overlapping at on its descent, it is equipped with additional eccentric deflectors, freely mounted on the pas-compressor pipes, the main and additional eccentric nye diverters are designed as sleeves with a longitudinal rib. 2. The device according to claim 1, characterized in that the longitudinal edge of the sleeves on the outer end surface has a leaf spring. Sources of information taken into account during the examination 1. USSR author's certificate Luo 347717, cl. E 21 B 47/00, 1971. 2. Equipment of the well during the descent of devices into the annulus. Instructions for the study of downhole wells through the annulus. Ufa, 1964, p. 8-14 (prototype). iL iA / B 12 -9 -6 GSHG ( gp D -five -Yu ///////// 77 //// Figure 1 YU 12