RU157903U1 - PROTECTIVE DEVICE FOR THE INLINE TEMPERATURE AND PRESSURE SENSOR - Google Patents

Abstract

The protective device of the downhole temperature and pressure sensor, comprising a holder made with the possibility of fixing the sensor on the outside, characterized in that the upper and lower annular grooves are made from the inside and from the upper and lower parts of the holder, respectively, each of which is made with the possibility of fixing the movable sleeves depending on the position taken by at least one spring ledge, made on-off, having the ability to interact with the upper and lower limiters placed above and below the movable sleeve, respectively, and containing seals of at least two elements isolating a through hole in the housing connecting the pipe cavity of the well with the cavity in which the sensor is installed, while the shock compensator is additionally installed under the holder waves placed in a movable housing with the possibility of axial movement relative to a stationary barrel.

Description

The utility model relates to the oil and gas industry, namely, to the protective device of the temperature and pressure sensor in the conditions of downhole operation.

Known fiber optic pressure sensor used in the oil and gas industry, RU 146605 U1, E21B 47/06, G01L 11/02, 10.20.2014.

It is known to use an intelligent insertion sensor when testing wells with placing a pressure sensor in the wellbore and transmitting the received data for processing, RU 2450123 C2, E21B 47/06, 05/10/2012.

A well-known integrated device for researching wells, made with the possibility of descent into the wellbore on a wireline cable and comprising a cylindrical body, a fluid flow temperature sensor mounted on a holder, RU 2442891 C1, E21B 47/00, 02.20.2012.

A well-known fiber-optic system that provides data without intrusion into the well and the ability to transmit downhole data, which contains a stationary fiber-optic equipment that can measure the temperature in the wellbore, slb.ru/page.php?code=54

Known carrier element for an optical fiber containing pressure and temperature sensors along its length, RU 2473874 C2, G01L 11/02, 01/27/2013.

Known autonomous submersible downhole pressure and temperature meter, made with a control system and data processing, ej.kubagro.ru/2005/06/04/p04.asp, Scientific electronic journal KubGAU. No06 (14), 2005

Known devices have individual performance and use.

Known fiber-optic pressure and temperature sensor containing the sensor itself and the holder, the sensor is mounted on the outside, weatherford.ru/assets/files/pdf/6800_Optical-PressureTemp-Gauge-A4-., 2009

This technical solution was adopted as the closest analogue of this utility model.

The fiber optic pressure and temperature sensor (Weatherford) of the closest analogue is used for continuous monitoring of pressure and temperature in the reservoir and is installed in the wells both above and below the packer.

In the closest analogue of a protective device for a pressure and temperature sensor from various manifestations during technological operations with well equipment, in particular, from an explosive hydraulic wave after fixing the packer on the casing string and conducting pipe perforation operations under the packer, it is not provided.

The present utility model is based on a solution that improves the performance of the protective device during downhole operation of the temperature and pressure sensors.

The technical result of this utility model is to increase the protection of the temperature and pressure sensor from various deviations during technological operations and from the effects of mechanical impurities by placing a two-position movable sleeve with spring ledges in the holder to fix it in one of the annular grooves of the housing, and to make the movable sleeve with seals and installation under the holder of the shock wave compensator.

According to a utility model, this problem is solved due to the fact that the protective device of the downhole temperature and pressure sensor contains a holder made with the possibility of fixing the sensor outside of it.

The upper and lower annular grooves are made in the upper and lower parts of the holder body from the inside, respectively, each of which is made with the possibility of fixing the movable sleeve depending on the position taken by at least one spring ledge.

The movable sleeve is made on-off.

The movable sleeve has the ability to interact with the upper and lower stops placed above and below it.

The movable sleeve contains seals of at least two elements that isolate a through hole in the housing.

A through hole connects the pipe cavity of the well with the cavity in which the sensor is installed.

In addition, a shock wave compensator is additionally installed under the holder.

The shock wave compensator is placed in a movable housing with the possibility of axial movement relative to the stationary barrel.

The applicant has not identified sources containing information on technical solutions identical to this utility model, which allows us to conclude that it meets the criterion of "novelty."

The essence of the utility model is illustrated by drawings:

in FIG. 1 - Protective device of the downhole temperature and pressure sensor (lower position of the movable sleeve), section;

in FIG. 2 - Protective device of the downhole temperature and pressure sensor (upper position of the movable sleeve), section;

in FIG. 3- Node A in FIG. 1, section;

in Fig.4 - Node B in Fig. 1, section.

The drawings show:

Temperature and pressure sensor - 1.

Holder - 2,

case (holder 2) - 3,

ring grooves (in case 3) - 4,

through hole (in case 3) - 5.

Pipe cavity of the well (interacts with hole 5) - 6.

Mobile sleeve (in case 3) - 7,

spring ledges (sleeves 7) - 8,

seals (sleeves 7) - 9.

Upper stop (above sleeve 7) - 10.

Lower stop (under sleeve 7) - 11.

Shock wave compensator - 12,

movable housing (compensator 12) - 13,

fixed barrel (compensator 12) - 14.

The protective device of the downhole temperature and pressure sensor includes a holder 2 made with the possibility of fixing the outside of the sensor.

In the upper and lower parts of the housing 3 of the holder 2 from the inner side there are upper and lower annular grooves 4.

Each of the annular grooves 4 is made with the possibility for fixing the movable sleeve 7 depending on the occupied position by means of at least one spring ledge 8.

The movable sleeve 7 is made on-off.

The movable sleeve 7 has the ability to interact with the upper 10 and lower 11 stops placed above and below it, respectively.

The movable sleeve 7 contains seals 9 of at least two elements that isolate the through hole 5 in the housing 3.

A through hole 5 connects the pipe cavity 6 of the well with the cavity in which the sensor 1 is installed.

Moreover, under the holder 2 is additionally installed a shock wave compensator 12.

The shock wave compensator 12 is placed in the movable housing 13 with the possibility of axial movement relative to the stationary barrel 14.

An optical sensor “R / T-B” manufactured by LLC PetroFiber was used as a temperature and pressure sensor.

The device protects the downhole temperature and pressure sensor as follows.

The holder 2, with a temperature and pressure sensor 1 mounted thereon, is lowered into the well as part of the layout of the underground equipment. In this case, the movable sleeve 7 is in the lower position and isolates the through hole 5 from the tube cavity 6, protecting it from clogging with mechanical impurities during descent and from the ingress of killing fluid (air through the through hole 5).

An explosive hydraulic wave (after fixing the packer on the casing string and conducting pipe perforation operations under the packer) will not act on the temperature and pressure sensor 1 through the through hole 5, but on the movable sleeve 7 with gaskets 9.

Given that there is air in the through hole 5 (air is a good spring), the explosion pressure will be extinguished not only by the stiffness of the movable sleeve 7, but also by the air bubble.

After perforation of the well, a device (not shown) for moving the movable sleeve 7 from a lower position to an upper position is lowered on a wire. A through hole 5 connects the pipe cavity 6 to the sensor cavity - the temperature and pressure sensor 1 is ready for operation.

It is advisable to use this protective device of the downhole temperature and pressure sensor when a telescopic thermal compensator (not shown) is included in the composition of the downhole equipment, which provides additional protection of the sensor from the shock wave passing through the metal (from shaking).

When assembling downhole equipment, in which a heat compensator is not provided, use a shock wave compensator 12, which is installed in addition to the protection in the form of a movable sleeve 7.

The shock wave compensator 12 absorbs the shock wave moving along the metal along the axis of the underground equipment located below the holder 2, protecting the temperature sensor from mechanical shaking

and pressure 1 and an optical fiber (not shown) in the place of hermetic sealing on the temperature and pressure sensor 1.

The execution of the upper and lower annular grooves in the housing from the inside, each of which is made with the possibility of fixing the movable sleeve (two-position) depending on the position by means of a spring ledge containing seals and having the ability to interact with the upper and lower limiters, protects the temperature sensor and pressure from various deviations during technological operations during its downhole operation.

The implementation of a through hole connecting the pipe cavity of the well with the cavity in which the sensor is installed, and the presence of a movable sleeve with seals that isolate the through hole from the pipe cavity and protect the temperature and pressure sensor from the effects of mechanical impurities, increase the performance of the protective device.

The implementation of the shock wave compensator installed under the holder, made in a movable housing with the possibility of axial movement relative to the stationary barrel, improves the performance of the protective device during downhole operation of the temperature and pressure sensors.

The proposed protective device for monitoring parameters during the operation of an intellectual well was carried out using well-known optical technologies that are widely used in instrumentation, as applied to gas and gas condensate wells, and carried out design and technological studies of LLC Scientific and Production Firm Zavodon Zavod

determine, according to the applicant, the safety device meets the criterion of "industrial applicability".

Claims (1)

The protective device of the downhole temperature and pressure sensor, comprising a holder made with the possibility of fixing the sensor on the outside, characterized in that the upper and lower annular grooves are made from the inside and from the upper and lower parts of the holder, respectively, each of which is made with the possibility of fixing the movable sleeves depending on the position taken by at least one spring ledge, made on-off, having the ability to interact with the upper and lower limiters placed above and below the movable sleeve, respectively, and containing seals of at least two elements isolating a through hole in the housing connecting the pipe cavity of the well with the cavity in which the sensor is installed, while the shock compensator is additionally installed under the holder waves placed in a movable housing with the possibility of axial movement relative to a stationary barrel.

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