SU926247A1 - Apparatus for injecting water into well - Google Patents

Description

; The invention relates to IPF devices for dissociating an interval of drilling wells - and live testing of filtration investigations in them during engineering geological and hydrogeological surveys of alchemical engineering, namely tampons or packers of home-screw operation for effective injecting a hole into a well for well pumping for well pumping of well to the well for the well pumping of holes into the well for well pumping of the well for the well pumping of holes for the well injection of holes into the well for the natural injection of holes into tube for contact measurement of the discharge water level. A device for injecting water into a well is known, which includes a pipe string, a sealing element and a hollow line C l. Onako, this rig does not allow pumping to establish the filtration characteristics of rocks in the well interval under study. It is also known a device for injecting water into a well, comprising an inner and outer pipe string, a stem on which the sealing element is mounted and the pressure coupling C2l is screwed. However, the known device does not allow pumping and any pumping out of the well interval separated by a swab, as it is impossible to lower the airlift or the sump hole (the submersible pump, it is impossible to gel or swab the fluid out of the well.) the traction pipe increases its diameter and the diameter of the entire device, and this forces to drill during the exploration of an enlarged diameter, which significantly impairs the economical drilling performance, especially When using diamond drilling tools. The purpose of the invention is to free the external tubing string from the internal equipment necessary for testing. The goal:;} is achieved by providing the device with a support sleeve rigidly connected to the outer tubing, and the yc- i tangible with the possibility of disconnection from the pressure coupling, and a seal is installed between the inner column pipe and the pressure coupling. FIG. 1 shows a tampon, general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a view B in FIG. 2. The device contains a rod 1 with a lower support ring welded to it 2. A sealing element is placed on the rod, consisting of rings 3 of rubber, separated by metal washers 4. There is a support sleeve 5 at the lower end of the outer string of pipes b, bearing is 7 to reduce friction rotation between the pressure sleeve 8 and the support sleeve 5. The pressure sleeve 8 has two symmetrically shaped curved tips in the upper part and a seal 9 in the support socket with which the spanner key 10 interacts at the lower end of the inner column t 11. There are also spacer springs 12 attached to the studs 13 on the tampon rod 1 with nuts 14. The pressure sleeve 8 compresses the rings 3 through the thrust bearing 7 and the support sleeve 5 while screwing it onto the rod 1, having a screw thread in the upper part, similar to the thread on the clamping sleeve 8. The stem can move axially and rotate in the support sleeve 5. The outer and inner columns of pipes 6 and 11 are flat and open, but the top of the outer columns of pipes can be equipped with a tee head. The device operates as follows: the outer string of pipes 6, the stem 1 with the parts attached to it, is lowered into the well to a predetermined depth. Then, an internal string of pipes 11 with an open-end wrench 10 is lowered. By the movements of the pipe string 11 s. The surface of the wrench SE is connected to the pressure coupling with 8 horns into the notches and by rotating the pipes 11 the pressure coupling 8 is screwed further onto the rod 1, squeezing rubber rings through the support sleeve 5. The spacer springs 12 at this time keep the stem from free rotation until the rings 3 are expanded into the borehole walls. The compressed rings are distributed in breadth and tightly fit both the walls of the well and the rod, separating the lower interval of the well from the upper ones. Then the spanner wrench can be disconnected from the pressure coupling 8 and lifted on the pipes 11. By pouring water into the external water injection column of pipes 6, the tightness of the installation of the control unit is repeated — by placing the water level outside these pipes. In the positive case, an experimental injection of water into the well interval under investigation is carried out according to a conventional technique. The level of injected water is measured to maintain it at a predetermined value along the inner string of pipe 11. If necessary, for example, to measure the position of the static water level before discharge, the level gauge can be trimmed even below the stem. In order to perform pumping for the purpose of cleaning the well interval under study and better opening the water-conducting pores and cracks in the walls of the part of the well isolated from other well intervals, the inner string of pipe 11 after mounting the device is disconnected and removed to the surface together with the wrench 10 and inside the pipe string 6 is lowered by a water-lifting device - airlift, sucker-rod or submersible pump, etc. It is also possible to conduct a liquid squeeze by a scaffold. At the end of the pumping, the internal level gauge of the pipe 11 is lowered again to the pressure sleeve. Production of pumping out in various ways while raising the internal column of pipes 11 on the surface does not require explanations. To check the tightness of the installation of the device in the well by increased pressure and during the transition to injection by low pressure, when the level of the injected fluid is above the middle section of the leveling column of pipe 11 and when the water pressure is measured, it is necessary to produce a pressure gauge, the horn key 10 is lowered. a part of the notches in the pressure coupling 8, i.e. until contact of the bottom end of the roving yutiuch 10 with the seal 9 in the pressure socket of the pressure coupling 8 and the weight of the level gauge of the pipe string 11 is pressed against the seal 9. This achieves a leak-proof connection that can be checked by the position of the liquid level inside the pipe string 6 when Hacoc fluid is supplied along the pipe string 11, an injection line is attached to the surface from a pump with a pressure gauge.

When dismounting, the open-end wrench 10 is inserted into the connection with the pressure sleeve 8, by rotation in the opposite direction it is screwed from the stem 1, but not completely. Axial movements of an open-end wrench, when the horns are set in the side of the cutouts, the PCS are set up and down to better accommodate the rings 3, since the compressed rings can deform strongly, change their shape, especially with uneven borehole walls and fractured rocks, and without pacing do not regain its original shape and position on the stock. Then the spanner is taken out of the engagement and together with the inner pipe string II

rises to the surface

this way the outdoor column rises

pipes with stock to other parts

devices.

F. formula of invention

A device for injecting water into the well containing the inner and outer shell of the tubes, the stem on which the sealing element is installed and the push sleeve is screwed, characterized in that the device for releasing the outer string of tubes from the inner one for lowering the equipment necessary for the study. fitted with a support sleeve rigidly connected to the outer pipe string, and the inner

stake (I1na pipes installed with the possibility of disconnection from the pressure coupling.

2. Device POP.1, characterized in that a seal is installed between the inner column pipe and the pressure coupling.

Sources of information taken into account in the examination

1. USSR Author's Certificate No. 271455, cl. E 21 V 33/12, 1968.

2. Reference hydrogeologist under the general editorship of ME E. Altovsky. Gosgeoltekhizdat, 1962, p. 379-38О (about totype).

Claims (2)

SUMMARY OF THE INVENTION A device for injecting water into a well containing an internal and installed sealing element and a pressure sleeve is screwed on, characterized in that, in order to release the external pipe string from the internal pipe for lowering the equipment necessary for research, the device is equipped with a support sleeve rigidly connected to the external pipe string, and the inner th pipe string is installed with the possibility of disconnection from the pressure sleeve. 2. The device pop. 1, characterized in that a seal is installed between the inner pipe string and the pressure sleeve 15.