A method of operating wells

 

The invention relates to oil and gas industry and can be used on wells that are operated only by the fountain column, or wells, which are operated simultaneously by the fountain column and the annular space. The technical result is to increase the reliability of the method. The method involves the selection of gas from the well, determining, using the measuring device parameters of the gas flow in the pipeline onshore gas gathering system, comparing them with the given parameters and the control flow depending on the ratio of specific and predetermined parameters, wherein before determining the parameters of the gas flow, the gas is pre-dried by feeding it through a technological hole in the pipeline onshore gas gathering system first installed on the insulated pipeline burst, then insulated the ascending branch, and then in a descending way, interacting with atmospheric air or artificially cooled, this condensed liquid is sent to the pipeline onshore gas gathering system through technological hole in it, and drained the gas is fed downward from the group refers to the natural gas industry and can be used on wells, operated only by the fountain column, or wells, which are operated simultaneously by the fountain column and the annular space.

The known method of operation of the well, including the selection of gas from the well, determining, using the measuring device parameters of the gas flow in the pipeline onshore gas gathering system, comparing them with the given parameters and the control flow depending on the ratio of certain and specified parameters (energy-Saving technologies in the production of natural gas. M: VNIIGAZ, 1996, S. 48-49).

The disadvantage of this method is the formation of the pipe to the meter impervious sealed tube of ice or gas hydrates at negative ambient temperatures, which makes it impossible to obtain reliable data on the parameters of the gas flow and, therefore, the control flow.

The primary object of the present invention is to improve the reliability of the method by providing obtain reliable data on the parameters of gas flow and control flow due to the exclusion of education at the connection to the measuring instrument impermeable tube ice or hydram, in the method of operation of the well, including the selection of gas from the well, determining, using the measuring device parameters of the gas flow in the pipeline onshore gas gathering system, comparing them with the given parameters and the control flow depending on the ratio and certain specified parameters, according to the invention prior to determination of the parameters of the gas stream, the gas is pre-dried by feeding it through a technological hole in the pipeline onshore gas gathering system first installed on the insulated pipeline burst, then insulated the ascending branch, and then in a descending way, interacting with atmospheric air or artificially cooled, this condensed liquid is sent to the pipeline onshore gas gathering system through technological hole in it, and drained the gas is fed from the downstream drainage to the measuring device on the rising pipe.

The invention is illustrated by drawings, where Fig.1 shows a diagram illustrating a method of operating wells only on the fountain column; Fig.2 shows a block drying gas fed to the measuring device; Fig.3 shows a diagram illustrating the Aza 1 consists of tide 2, installed on the pipeline 3 onshore gas gathering system, which is made of the technological hole 4. The tide is equipped with a bypass, which consists of two inter - connected bends-the inlet 5 and outlet 6, the latter is placed above the processing hole 4. Output outlet 6 provided with a connecting pipe 7 for connecting the measuring device 8, while the connecting pipe 7 are inclined to the output tap of 6. The outer surface of the tide 2 input and the drain 5 is thermally insulated 9. The outer surface of the output drain 6 can be performed with fins 10 or artificially cooled (conventionally not shown). The pipe 7, the measuring device 8 and the pipe section 3 the place of installation of the measuring device can be placed in the insulated housing 11.

A method of operating wells at negative ambient temperatures only in the fountain column is implemented as follows. From the fountain of the column 12, the gas enters the pipeline 3 onshore gas gathering system. Through technological hole 4 in the pipeline 3 warm, saturated with moisture, the gas enters into the cavity of the tide 2. The gas fills the interior cavity of the tide 2 and taps the t flow of warm gas and through the insulation 9, is maintained at the temperature of the pipe wall 3.

Warm wet gas climbs insulated inlet to the outlet 5, and its temperature decreases due to heat transfer through the wall of the outlet to the ambient air. The output tap of 6 gas flows from the inlet to the outlet 5 at a temperature slightly above the ambient temperature. In the output tap 6, the gas is cooled by heat exchange with the environment to the ambient temperature. On the inner surface of the cavity of the branches 5 and 6, the water vapor condenses in the form of the liquid droplet, ice crystals (snow) or gas hydrates. The condensed moisture flows down the walls of the branches 5 and 6 to the outer surface of the pipe 3, through the process 4 hole gets inside the pipe 3 and is carried away by the gas flow. Additional drain holes in the pipe (not shown conventionally) significantly reduce the likelihood of accumulation of condensed liquid in the cavity of the tide 2.

The temperature downstream of the gas in the cavity output tap 6 is reduced, and the density of the gas increases. Cooler gas (higher density) will tend to descend on the output tap of 6, i.e., descending is alasti tide 2 in the cavity downstream of the outlet 6. Thus, a redistribution of the flow - area of natural circulation by convection. In addition, when the contact of cold gas down the output tap of 6, with a warm gas flowing through the opening 4 and the surge of 2 to the output tap 6, moisture condensation, and additional gas is drained.

In the preliminary drying in the nozzle 7 to the measuring device 8 is supplied to only the dehydrated gas, resulting precluded the formation impermeable deaf ice or hydrate plugs in the channels to devices, which ensures the high availability of systems control wells at negative ambient temperatures.

The same technology pipeline can be connected several instruments through a separate drying blocks.

Using a measuring device (measuring instruments) 8 determine the parameters of the gas flow in the pipeline 3. The obtained parameters are compared with predetermined parameters set by the setting device, a built-in control unit 13. The output signal from the regulating unit is supplied to the actuator control valve 14, which is supported mode sizable zones or pulling of produced water.

In the operation of wells simultaneously on the fountain column and the annular space of the control valve 14 is installed on the pipe 15, which receives gas from the annulus.

Claims

A method of operating the wells, including the selection of gas from the well, determining, using the measuring device parameters of the gas flow in the pipeline onshore gas gathering system, comparing them with the given parameters and the control flow depending on the ratio of specific and predetermined parameters, wherein before determining the parameters of the gas flow, the gas is pre-dried by feeding it through a technological hole in the pipeline onshore gas gathering system first installed on the insulated pipeline burst, then insulated the ascending branch, and then in a descending way, interacting with atmospheric air or artificially cooled, this condensed liquid is sent to the pipeline onshore gas gathering system through technological hole in it, and drained the gas is fed from the downstream drainage to the measuring device on the rising PA is

 

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SUBSTANCE: device includes exposure chamber, U-shaped branch pipe on it for passing of oil with picking of oil from upwards, made in form of five pipes inserted into one another with common ceiling and bottom and apertures in upper and lower portions of pipe, forming serially placed U-shaped and upturned U-shaped branch-pipe, and channel for passing of water with picking of water from downwards, having common output from device.

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1 ex, 1 dwg

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