SU729337A1 - Apparatus for running instruments into a well - Google Patents

Description

one

The invention relates to the extraction of oil and gas and can be used in the study of flowing wells.

When lowering the instruments into the well, it is necessary to overcome the pushing force acting on the flexible element (wire, cable, troC) in the lubricator gland. Various devices are used for this purpose.

A device for launching instruments into a gushing well is known, comprising a flexible element associated with the device and a lubricator with a mechanism of forced stretching of a flexible element consisting of kinematically coupled rollers-shchestren and a manual drive 1.

The drawbacks of the device are that the stretching mechanism increases the size and weight of the lubricator, which makes it difficult to work with the latter, as well as the greater labor intensity of manual stretching of the flexible element.

A device for launching devices into a well is equipped with an overhead valve with a suspension nozzle, containing a lubricator with a preventer.

The coupling element, the coupling unit and the flexible element associated with the device 2.

The drawbacks of the device are that its dimensions and weight are increased due to the supplier, which makes it difficult to work with the device, as well as the fact that working with it requires additional labor costs associated with increasing the weight of the weight.

The aim of the invention is to reduce

JQ dimensions of the device while reducing the complexity of the operation.

This is achieved by the fact that the device for launching the instruments into a well equipped with flowering fittings with a suspension nozzle, containing a lubricator, an attachment, a connecting unit and a flexible element connected to the device, is provided with an attachment node connected to The compressor is located in the lubricator by a hydraulic drive in the form of a hollow differential piston with a cylinder, and the connecting unit is designed as a collet lock, the collet of which is fixed on the lower end of the differential socio porschn in which

The device is spring-loaded relative to the differential piston.

In addition, in the device the suspension assembly is made in the form of a ball lock with a spring-loaded stem.

FIG. 1 shows the device with the device in the fountain armature before connecting the device to the instrument; in fig. 2 - the same, after joining the device to the device.

The device comprises a chopper 1 connected to a suspension assembly consisting of a sleeve 2 with a socket 3 and openings 4 in which balls 5 are interconnected, which interact with a variable-magnet stem 6, spring-loaded spring 7. The suspension assembly balls 5 interact with the suspension tube 8 .

The hydraulic drive is made in the form of a cylinder 9, in which a hollow differential piston 10 is mounted, at the lower end of which the collet 11 of the connecting unit is fixed. In the cavity of the piston 10 stir, en device 12, spring-loaded spring 13 and suspended on the flexible element 14,

The preference 1 with a suspension assembly is installed on the suspension pipe 8 of the Christmas tree 15. The hydraulic drive with the device 12 before descending into the well is placed in the lubricator 16.

The device works as follows.

The tensioning element 14 is compressed to compress the spring 13 and the lubricator 16 is installed on the Christmas tree 15. The cavity of the lubricator 16 is connected to the well. Under the action of the borehole pressure on the piston 10, it experiences a force pushing it out of the cylinder 9. The tension of the flexible element 14 is loosened and the piston 10 with the device 12 is allowed to move downwards against the stop into the sleeve 2, while the collet 11 enters the socket 3 of the sleeve 2. Continue to loosen the tension of the flexible element 14 and the spring 13 expands and the device 12 is inserted between the collets 11, which secures the latter in the socket 3 of the bushings 2 and thereby closes the connecting unit and secures the wand 1 to the device 12. The device 12 advances and pushes out 6 of variable cross-section rod, compressing the spring 7. As a result, between the balls 5 larger section 6 shifts the stem is smaller, which allows the balls 5 converge towards the longitudinal axis of the sleeve 2 and thus release ut zhelitel 1 by reacting with an outboard pipe 8.

The weight chopper 1 by its weight creates the force required to overcome the pushing force on the flexible element 14 in the lubricator oil seal 16.

When lifting, after inserting the hydraulic actuator cylinder 9 into the die-gun 16, the device 12 is pulled into the differential day 10, and the latter into the cylinder 9 and the spring 13 is compressed. The device 12 goes up and allows the spring 7 to press the stem 6 of variable cross section, which in turn spreads the balls 5 to the sides, thus allowing the suspension assembly to interact with the suspension nipple 8. With the further advancement of the device 12, after leaving it and the gap between the collet 11 The latter are able to exit the socket 3 of the sleeve 2, as a result of which the device 12 is detached from the gel. Save the tension of the flexible element 14, divide the cavity of the lubricator 16 from the well and remove the lubricator from the Christmas tree 5. The device 12 is then removed from the lubricator 16.

The application of the proposed device facilitates the descent of the device into the wells at high wellhead pressure, reduces labor and time costs and, therefore, provides an economic effect.

The device can also be used for launching devices with overcoming the upward ejection force in the

well.

Claims (2)

1. Device for launching instruments into a well equipped with flow-bearing fittings with a suspension pipe, containing a lubricator, equipment, connecting unit and a flexible element associated with the device, characterized in that, in order to reduce the size of the device and reduce the labor-intensive operation, it is equipped a suspension assembly, which interacts with the projection of the suspension pipe, is connected to the generator, and is placed in the lubricator by a hydraulic drive in the form of a hollow differential piston with a cylinder, and the connecting node n in the form of a collet lock, the collet of which is fixed on the lower end of the differential piston, in which the device is installed, spring-loaded relative to the differential piston. 2. The device according to claim 1, characterized in that the suspension assembly is made in the form of a ball lock with a spring-loaded l stem Sources of information taken into account in the examination 1. Petrov AI. Methods and measurement techniques for well field research, M., Nedra, 1972, p. 239-241. 2. USSR author's certificate No. 451837, cl. E 21 B 47/00, 1974 {prototype).