RU82332U1 - GAS OR CONDENSATE SAMPLING DEVICE - Google Patents

Abstract

A device for sampling gas or condensate, including inlet valves, high-pressure containers and pressure and temperature sensors, characterized in that it contains two collectors, at the entrance of which there are diffusers with diverging radial and symmetrically spaced channels relative to each other, at the ends which mounted shut-off valves connected to the controller, controlling their closing and opening and recording data received from pressure and temperature sensors integrated into the measurement units.

Description

The utility model relates to gas or condensate sampling devices (sampling devices) and can be used in the oil and gas industry for sampling gas or condensate at frequent intervals or when several samples are taken simultaneously.

Currently, there are a large number of sampling devices used as part of stationary or portable wellhead equipment and designed for sampling the production of gas or gas condensate wells. For example, a device for sampling liquid from a pipeline according to the patent of the Russian Federation No. 2141105, published on 10.11.1999, or a multi-point device for analyzing a gas sample according to Japan patent No. 3422577, published on 06.30.2003, or a sampling device according to the patent of the Russian Federation No. 21511290, published on 06.20.2000 . The disadvantages of the described devices is their high material consumption and complexity in manufacturing.

It is also known that the sampling device adopted for the prototype includes an inlet valve, high pressure connecting tubes, a high pressure container, a pressure gauge, and an adjustment valve (see the Guidance document. Unstable liquid hydrocarbons. Sampling methods. MM 51-00159093-004-02. OAO Gazprom. Approved March 27, 2003).

The described sampling device allows the simultaneous sampling of several gas or condensate samples only according to the scheme of serial connection of high-pressure containers, which requires considerable time to change the latter during periodic sampling. In addition, the samples taken using the described device are not representative enough due to the difference in the hydrodynamic resistance values at the container attachment points. This is the main disadvantage of the above sampling devices, since their use

it does not allow to determine with sufficient accuracy the composition of the separation gas during the operation of gas or gas condensate wells operating in the regime of periodic production selection from the reservoir, for example, cyclic (periodic) gas lift.

The objective of our utility model is to eliminate the disadvantages of the prototype and the sampling devices described above by adding nodes and improving the design of individual parts of our device to provide the same conditions for sampling gas or condensate with sufficient representativeness while simultaneously connecting all containers to the device in an unsteady flow of products wells, in particular, during their operation under regimes with periodic production sampling. The technical result is also the expansion of the arsenal of sampling tools.

The problem in the device for sampling gas or condensate, including inlet valves, high pressure containers and pressure and temperature sensors, is solved by the fact that it contains two collectors, at the entrance of which there are diffusers with diverging radial and symmetrically spaced channels relative to each other at the ends of which shut-off valves are mounted, connected to the controller, controlling their closing and opening and recording data received from pressure sensors integrated into the measurement units temperature and temperature.

Distinctive features of the claimed utility model are:

- the device contains two collectors;

- at the inlet of the collectors are diffusers with diverging radial channels symmetrically located relative to each other;

- at the ends of the radial channels and at the inlet of the collectors, shut-off valves are mounted;

- shutoff valves are connected to the controller that controls their closing and opening;

- the controller registers data received from pressure and temperature sensors;

- pressure and temperature sensors are combined into measurement units.

The above set of essential features is unknown to us from the sources of patent and patent-related information, therefore, it meets the patentability condition of the utility model “Novelty”.

A device for sampling gas or condensate does not require complicated equipment for its manufacture, consists of most standard units (parts) and can be easily used for its intended purpose, therefore it meets the patentability condition of the utility model “Industrial Applicability”.

Figure 1 presents the installation diagram of a device for sampling gas or condensate during gas sampling; figure 2 is a section aa in figure 1.

A device for sampling gas or condensate includes upper 1 and lower 2 inlet valves, high pressure containers 3, pressure sensors 4 and temperature 5, upper 6 and lower 7 collectors, at the entrance of which there are diffusers 8 with diverging radial and symmetrically located relative to them each other with channels 9, at the ends of which are mounted shut-off valves 10 connected to a controller 11, controlling their closing and opening and recording data received from pressure sensors 4 and tempera 5. Measurement units 12 are connected to the collectors 6 and 7 by means of nozzles 13. Channels 9 are connected to high pressure containers 3 through shut-off valves 10.

When sampling gas, gas from the separation unit (not shown in the figures) through the high pressure valve 14, the high pressure connecting pipe 15 and the inlet valve 1 enters the metering unit 12, where at

using pressure sensors 4 and temperature 5 are continuously recorded in the controller 11, the pressure and temperature of the gas. Then, through the inlet pipe 13 of the upper manifold 6, the gas passes into the diffuser 8, into diverging radial channels 9, through the open shutoff valves 10 into the high pressure containers 3. The outlet of the high pressure containers 3 is connected to the lower manifold 7, in which the gas is collected and discharged through the pipe 13, the inlet valve 2 with continuous registration in the controller 11 pressure and temperature using pressure sensors 4 and temperature 5.

When taking condensate samples, the gas or condensate sampling device works in the reverse way. Condensate from the separation unit (not shown in the figures) through the high pressure valve 14, the high pressure connecting pipe 15 and the inlet valve 2 enters the metering unit 12, where the pressure and temperature of the condensate are continuously recorded in the controller 11 using pressure sensors 4 and temperature 5. Further, through the inlet pipe 13 of the lower collector 7, the condensate passes to the diffuser 8, to the diverging radial channels 9, through the open shutoff valves 10 to the high pressure containers 3. The outlet of the high pressure containers 3 is connected to the collector 6, in which the condensate is collected and drained through the pipe 13, the inlet valve 1 with continuous registration in the controller 11 of the pressure and temperature using pressure sensors 4 and temperature 5.

When conducting gas sampling after thermostating of high pressure containers 3 (by passing gas through them), with the help of the controller 11, shut-off valves 10 are closed with the set frequency and parameters. Then, valves 16 on the high-pressure containers 3 are closed, the high-pressure containers 3 are disconnected and transported to the laboratory for analysis.

When sampling the condensate after filling the high pressure containers 3 (by passing condensate through them) using the controller 11 with the established frequency and parameters close

shut-off valves 10. Then close the valves 16 on the high-pressure containers 3, the high-pressure containers 3 are disconnected and transported to the laboratory for analysis.

Claims (1)

A device for sampling gas or condensate, including inlet valves, high-pressure containers and pressure and temperature sensors, characterized in that it contains two collectors, at the entrance of which there are diffusers with diverging radial and symmetrically spaced channels relative to each other, at the ends which mounted shut-off valves connected to the controller, controlling their closing and opening and recording data received from pressure and temperature sensors integrated into the measurement units.