RU196122U1 - Pressure sleeve of the downhole sensor holder - Google Patents

Abstract

The utility model relates to designs of holders of downhole sensors. The technical result of the proposed technical solution is to ensure high maintainability of the pressure testing unit of the downhole sensor holder, which is achieved by installing on the casing of the downhole sensor holder a removable pressure sleeve with a through hole for installing the downhole sensor and a tube connecting the downhole sensor to the annulus, an opening for installing a stopper the screw used to secure the downhole sensor, the crimping port and screw mounting holes c, serving to fix the crimping sleeve on the housing of the downhole sensor holder.

Description

The utility model relates to downhole equipment for the oil and gas industry, namely, to designs of holders of downhole sensors.

A device for mounting a downhole sensor is known, described in the patent for invention US2003062156A1, IPC E21B43 / 00, priority dated 04/03/2003, selected as a prototype, which includes a crimping unit integrated into the body of the holder of the downhole sensor.

The main disadvantage of the known design is that in case of damage to the pressure testing unit when lowering the downhole sensor holder into the well, it is impossible to carry out its operational repair or replacement, but it is necessary to replace or repair the entire downhole sensor holder.

Solved technical problem is the lack of maintainability of the pressure testing unit of the downhole sensor holder.

The technical result of the claimed technical solution is to ensure high maintainability of the crimping unit of the downhole sensor holder.

The specified technical result is achieved by installing on the casing of the borehole sensor holder a removable crimping sleeve having a hole for installing the borehole sensor, as well as a tube connecting the borehole sensor to the in-pipe space, a hole for installing the locking screw, a crimping port and holes for installing the crimping sleeve on the housing downhole sensor holder.

The crimping sleeve mounted on the housing of the downhole sensor holder allows you to check the tightness of the connection between the downhole sensor and the in-pipe space, and since it is removable, this allows you to quickly repair or replace the crimping assembly without having to repair or replace the entire downhole sensor holder .

The inventive design is illustrated by drawings:

- in FIG. 1 shows a 3/4 view of a crimping sleeve;

- in FIG. 2 shows a crimping sleeve mounted on a housing of a downhole sensor holder;

- in FIG. Figure 3 shows a cross-sectional view of a crimping sleeve mounted on the housing of the downhole sensor holder with the downhole sensor connected and a tube connecting the downhole sensor to the in-tube space.

The crimping sleeve (1) (Fig. 1) contains a through hole (2) used to install the downhole sensor and a tube connecting the downhole sensor to the in-tube space, an opening (3) designed to install a locking screw that prevents the downhole sensor from loosening during descent into the well, the pressure test port (4), designed to check the tightness of the connection of the downhole sensor with the pressure sleeve (1) and holes (5), designed to install the screws used to fix the pressure test in ulki downhole sensor on the holder body (6).

In this case, the hole (2) can be made stepped, and can also have threads for fitting fittings, which serve to connect the downhole sensor to the tube connecting the downhole sensor with the in-tube space, and can also have grooves for installing o-rings (for example, rubber), serving to ensure the tightness of the connections.

The inventive design works as follows (Fig. 2 and Fig. 3): a removable crimping sleeve (1) is installed on the housing of the downhole sensor holder (6) with screws (7), then a downhole sensor is installed in the hole (2) for the downhole sensor ( 8), fixing it with a locking screw (9), while the hole (2) can be made stepwise, and the tightness of the junction of the downhole sensor (8) and the tube (10) connecting the downhole sensor (8) with the in-pipe space is ensured when help fittings (11) installed on thread (12).

To test the tightness of the connection of the downhole sensor (8) with the crimping sleeve (1), pressure testing is carried out using a special fitting (not shown in Fig.) Through the crimping port (4), the tightness during pressure testing is ensured by the sealing ring (13), and after completion of the test, a compression nut and a plug (14) are installed in the crimping port (4) (Fig. 2), and a protective cover (15) is attached to the body of the downhole sensor holder (6) with screws.

This design in case of damage to the crimping unit, made in the form of a removable crimping sleeve (1), allows you to disconnect it from the downhole sensor (8), tube (10) and downhole sensor holder (6), then repair or replace it and continue to use the holder downhole sensor, while eliminating the need for complex repair of the entire holder of the downhole sensor.

Thus, the use of a removable crimping sleeve of the downhole sensor holder allows you to check the tightness of the connection of the downhole sensor to the in-pipe space, and if necessary, quickly replace or repair the crimping sleeve.

To verify the operability of the proposed design of the crimping sleeve of the downhole sensor holder, design and technological studies and pilot tests were carried out in the gas test bench of the Scientific and Production Company Zavod Zonon LLC, maintaining well temperature and pressure conditions, as well as testing at Bovanenkovsky and Chayandinsky oil and gas condensate fields.

As a result of tests carried out using well-known technologies widely used in the oil and gas industry, in relation to gas and gas condensate wells, the inventive device was proved to be operable and highly reliable when performing work such as perforation, hydraulic fracturing and well development.

Claims (3)

1. A pressure sleeve of the downhole sensor holder, having a through hole for installing the downhole sensor and a tube connecting the downhole sensor to the in-pipe space, an opening for installing a locking screw, a pressure testing port and holes for installing screws for fixing the pressure sleeve to the housing of the downhole sensor holder. 2. The crimping sleeve of the downhole sensor holder according to claim 1, characterized in that the through hole for installing the downhole sensor and a tube connecting the downhole sensor to the in-tube space is made stepwise. 3. The crimping sleeve of the downhole sensor holder according to claim 1, characterized in that the through hole for installing the downhole sensor and the tube connecting the downhole sensor to the in-pipe space has a thread for fitting and also grooves for installing the sealing rings.

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