SU1465549A1 - Arrangement for conveying instruments in well - Google Patents

Abstract

The invention relates to the field of geophysical well research. The goal is to increase the tension in the work. The device includes a housing I with locking elements 2, a limiter 3 strokes rigidly fixed on the housing 1, an electric actuator 4 with a screw 5 and a nut 6 with supporting elements 7 fixed to it. The device has a spring 8, a ring 9. The nut 6 is unclamped, spring-loaded a spring 8 and is enclosed by a ring 9 compressing it, which is installed so that it can interact when moved with the limiter 3 strokes. The actuator 4 is made with a discharge hydraulic chamber 10. The device also includes a connecting head 11, a second travel stop 12, springs 14, 15. The housing has windows 16, 17, and a piston 18 is placed in the chamber 10. Screw 5 rotating from an electric actuator 4 , is screwed into the expansion nut 6 and moves it towards the drive 4. The support elements 7 are fixed to the nut 6, which are opened by means of springs 15 and are supported on the borehole wall. Elements 2, together with the root 1, move along the well, relying on elements 7. 1 Cp. f-ly, 1 ill. 11 (L o ate sd 4 CO 1

Description

The invention relates to well-geophysical well surveys and is intended for the delivery of geophysical instruments, as well as other instruments and loads to the bottom of directional and horizontal wells.

The aim of the invention is to increase the reliability of operation.

The drawing shows a device for transporting devices in the well, a general view.

The device includes a housing 1 with locking elements 2, a limiter 3 strokes rigidly fixed on the housing 1, an electric actuator 4 with a screw 5 and a nut 6 with zak; the supporting elements 7 fixed to it 7. The device is equipped with a spring 8, a ring 9 and raiiKa 6 expanding, spring loaded 8 and covered by a ring 9 clamping it, installed with the ability to interact with the 3-way stop and with the possibility of squeezing and screwing the nut 6 during the working stroke of the device and sliding it together with the supporting elements 7 by screw 5 in the initial th position in front of the stroke.

In addition, the actuator 4 is made with a discharge hydraulic chamber

ten.

For transporting devices in the well at the wellhead, the device is connected to the device being transported (not shown) with the help of a coupling head 11 rigidly connected to housing I.

In case 1, an electric actuator 4 is placed in a hermetic compartment, connected through a unloading chamber 10 with a screw 5, on which a second stop 12 is placed. The nut 6 is spring-loaded spring 8, the Screw 5, the nut 6 with the ring 9 and the spring 8 are placed in an oil-filled elastic shell 13.

The locking elements 2 spring-loaded spring 14, and the locking elements 7 spring 15.

In the non-operating position of the device, the locking elements 2.. and the supporting elements 7 are stacked 5, respectively, in the windows 16, 17 of the housing 1.

Perceived by the screw 5, the hydrostatic pressure of the well is transmitted to the piston 18 of the discharge hydraulic chamber 10,

The device works in the following way.

A screw 5, rotated by an electric actuator 4 (via a gearbox or a drive coupling), is rigidly connected: With the device body 1, it is screwed into the release nut compressed by the ring 9 and moves it toward the electric drive. On the nut 6 is fixed; The supporting elements 7, which are opened by means of springs 15 and resting on the borehole wall. During the screwing of the screw 5 into the nut 6, the locking elements 2 together with. the housing 1 is moved along the well, resting on the supporting elements 7. During its movement to the electric drive 4. on the screw 5, the nut 6 squeezes 8, and then rests against the ring 9 enclosing it with the stop 3. Under the action of the limiter 3 stroke, the ring 9 moves along the nut 6, and the nut is opened. The nut 6 is depressed on the thread under the action of the compressed spring 8, together with the supporting elements 7, slides along the screw 5 into the initial position, while the ring 9 moves under the action of the second limiter 12 of the stroke along the nut 6 in the opposite direction, again squeezing it on the screw 5 The process of screwing the screw 5 into the nut 6 is repeated (without the process of unscrewing). Before working on the well by supplying electrical energy to the structure, the supporting elements

7 and the locking elements 2 are squared and the device-device (s) on the cable is lowered into the well. Upon reaching the difficult part of the well, the electric actuator 4 is turned on, the supporting elements 7 and the locking elements 2 are opened, and the device begins to move along the well in the described manner, i.e. Subscribe to the locking elements 2, throwing out in the middle with the help of a spring

8 support elements 7 and then tightening on them with a pitch equal to the length of the screw 5 Upon completion of transportation, closure of the supporting elements

7 and the locking elements 2 are made by one-time reversing of the electric actuator 4. In this case, the screw 5 is unscrewed from the nut 6, the supporting elements 7 by means of bevels in the windows 17, the locking elements 2 by means of the stroke limiter 12 moving in their direction are placed respectively in the windows 17 and 16 corps 1.

Formulas

the invention

Claims (2)

1. A device for transporting instruments in a well, comprising a housing with locking elements, travel stops and a drive with a screw and a nut with supporting elements fixed to it, which is equipped with a spring, a ring the drive nut is expandable, spring loaded and covered by a ring that is interoperable during movement with the travel stop, 2. The device according to claim 1, about t l and - chachaees: the fact that the drive is made with a discharge hydraulic chamber.