SU1361319A1 - Apparatus for investigating wells for gas-condensate - Google Patents

Abstract

The invention relates to the oil and gas industry and can be used to study reservoirs and wells for gas condensation using metering gas separators of the centrifugal type and adjustable throttles of an angular type. The purpose of the invention is to increase the efficiency of separation of the initial liquid from gas, reducing the size and metal consumption of the device. The device contains a centrifugal gas separator 3 with inlet 13 and outlet 14 nozzles and inlet 2 and outlet 5 throttles (D) of the angular type connected to them. Each of D consists of 9 inlet and outlet channels and movable rods 10 adjacent to them. The drainage pipe 21 of the inner coaxial chamber of the gas cavity is connected to the inlet D stem of the inlet and outlet D arranged with a central bore. At the same time, deaf channels axially placed in the inlet and outlet D with rods of heat conductive material. 1 hp f-ly, 3 ill. (L W 20 3 1 - L- 7

Description

one

The invention relates to the oil and gas industry and can be used to investigate reservoirs and wells for gas condensation using metering centrifugal gas separators and adjustable angle reactors.

The purpose of the invention is to increase the efficiency of separation of the initial liquid from gas, reducing the size and metal consumption of the device.

FIG. 1 shows the proposed device, a general view of FIG. 2 is a section A-A in FIG. one; in fig. 3 - output choke, cross section.

The device contains a supply pipe 1, an inlet choke 2, a gas separator 3, a gas flow meter 4, an output choke 5 and connecting pipelines between them. The inlet choke 2 contains a steel case and peripheral annular chambers 6 and 7 located therein, tapering inlet channels 8 tangentially mounted to the centrally located output channel 9, as well as adjacent to the inlet and outlet channels axially movable and provided with an axial bore - a rod 10. Channels 8 are formed by blades 11 connected to an annular partition between chambers 6 and 7 and channel 9. In an annular partition and vanes there are deaf axial channels parallel to the axes of the throttles. rods 12 in them made of copper or other heat-conducting material. The mechanism for the axial movement of the rod 10 is not shown.

The gas separator 3 contains a vertical hollow body with a tangentially mounted inlet pipe 13, an outlet pipe 14 and located in the body above and below the partition wall 15, respectively, of the gas and liquid cavities. An annular partition 16 is fixed in the gas cavity of the housing above the inlet 13 and connected to the coaxial shell 17 and the drainage pipe 18. There is a shell 19 in the center of the separator housing, a gap with a shell 17.

An additional paddle swirler 20 is installed on the upper open end of the shell 19. The bottom blind end of the shell 19 is connected by a pipeline with a drainage pipe 21.

192

The internal cavity of the shell 19 is communicated by a pipe with a pipe 14. The pipe 21 is connected by a pipe with a central hole of the rod 10.

Gas flow meter 4 is made in the form of a standard restriction device or in another known manner. The output choke 5 is made similar to the input choke and contains radial tapering input channels 22, as well as blind axial channels with rods 23 of heat-conducting material.

The device works as follows.

In the supply line 1, gas from the well is fed to the inlet throttle 2, where it is throttled from the pressure in the supply line 1 to the pressure in the separator 3. The corresponding pressure ratio is 1.2-1.5. In this case, the gas flow from the pipeline 1 successively passes the annular distribution chamber 6, the channels

8 and 9. In channels 8, fluid is throttled, and in channel

9- coagulation and pre-centrifugal separation of condensed aerosol, which increases the separation efficiency of the liquid in the separator 3. The static pressure of the flow in the core of the inlet section of the channel 9 adjacent to the channels 8 is significantly lower than the total pressure of the flow in the separator due to the vortex motion diffuser channel shape, through the chamber 7, the coolant is circulated, for example, diesel fuel, at the temperature of the latter by 50-100 s higher than the gas flow temperature in channels 8 and 9, the rods 12 of the thermally conductive material to improve heating and coolant channels 8 interfere icing

and hydrate deposition in these channels,

In the gas separator 3, centrifugal separation of liquid droplets from the flow as it moves along successively communicated coaxial separation shells 17 and 19 in the gas cavity of the apparatus, as well as accumulation and measurement by the volumetric method of the separated liquid in the fluid cavity of the apparatus are carried out. The removal of liquid from the gas into the liquid cavity is carried out by gravity under the action of gravity lerez drainage

31

the gaps between the gas separator body 3 and the partition 15 and t | 18) 18. The removal of fluid from the internal cavity of the shell 19 in the inlet throttle 2 is carried out together with the suction of a part of the gas due to the relative vacuum in the channel 9 of the inlet throttle. This provides an increase in the efficiency of liquid separation in the gas separator due to the additional coagulation of azrozole in the inlet choke. In addition, the forced removal of fluid from the cavity of the shell 19 ensures the operation of the gas separator when flooded placing the shell 19 in the liquid cavity of the apparatus, which increases the useful relative volume of the gas cavity.

In the output throttle 5, the centrifugal separation of the liquid is not performed due to the radial arrangement of the kenars 22, which improves the transportation of gas in the output collector

The regulation of flow rate and gas pressure during operation is carried out by axial movement of the rods 10 of the inlet 2 and outlet 5 of the throttles, leading to a change in the output sections of the channels 8 and 22.

With the same diameters of the gas separator body and constant working pressure in the body, the decrease in metal consumption of the device is almost proportional to the reduction in the length of the gas separator body.

The device provides high separation efficiency of the initial

, 6 S 1211

Q 5

0

five

0

five

liquids from gas due to a multistage centrifugal separation scheme and preliminary coagulation of the aerosol of a gas condensate in the inlet throttle.

Claims (2)

1. A device for investigating gas condensate wells, containing inlet and outlet throttles of the angular type with rods, and central outlet channels, a centrifugal gas separator with a gas and liquid cavity, partitions and shells in the gas cavity forming sequentially connected coaxial chambers with drainage nozzles | mi, characterized in that, in order to increase the efficiency of the separation of the initial liquid from the gas, reduce the size and metal intensity of the device, the input and output throttles are equipped with rzhn mi of thermally conductive material mounted in blind axial channels, parallel to the axis of the throttles, and the rod of the input throttles are made with an additional axial bore, which has an outlet to the central output channel, and is equipped with a pipeline connected to the drainage pipe of the internal coaxial separation chamber of the gas separator. 2. A device according to Claim 1, characterized in that the input channels of the input droplet are located tangentially to its output channel. Editor I.Gorn .2 Compiled by E.Garbuz Tehred M. Morgenthal Order 6206/37 Circulation 533 Subscription VNISHI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4 Proofreader L. Patay