Installation for studies of gas and gas condensate wells

 

The invention relates to the oil and gas industry and can be used in the collection systems of production and research of gas and gas condensate wells. The technical result of the invention is to improve the reliability of the installation and its technological capabilities. For this installation has installed in the building blocks of the preliminary and basic cleaning gas swirler, the gas flow meter with a diaphragm, units of measurement of pressure and temperature, collections of fluid and solids blocks pre-and main gas purification. Unit pre-treatment has a protective casing. Block basic cleaning gas has a cylindrical filter element on a perforated frame with a safety relief valve installed outside of the perforations of the frame and install the filter element. Collections of liquids and solids is equipped with an optical liquid level indicator and mesh filters solids and connected to the cavities of the blocks of the preliminary and main gas purification. Corps and elements of the plug type. Swirl unit for pre-cleaning gas is made in the form spieleloesung difference and can be used in the collection systems of production and research of gas and gas condensate wells.

Known installation for studies of gas and gas condensate wells, including installed in the building blocks of the preliminary and basic cleaning gas from the centrifugal swirlers, the gas flow meter with a diaphragm, units of measurement of pressure and temperature, collections of liquids and solids blocks preliminary and basic cleaning gas, and the main unit cleaning gas has a cylindrical filter element on a perforated frame, collections of liquids and solids is connected to the cavities of the blocks of the preliminary and main gas purification, case and elements of plug type /1/.

The disadvantage of this setup is that due to the lack of protective shroud block prefilter production wells are abrasion casing installation. In addition, when large volumes of liquid and suspended particles in the production wells is difficult measurement of their quantity and removing suspended particles from collections.

Closest to the described device is setup to study gas and gas condensate wells, including installed in the building blocks of the preliminary and main gas purification with Savaria the ical impurities blocks preliminary and basic cleaning gas, unit pre-treatment has a protective casing and the block main gas clean - cylindrical filter element on a perforated frame, collections of liquids and solids is connected to the cavities of the blocks of the preliminary and main gas purification, case and elements of plug type /2/.

The disadvantages of this installation also includes the lack of functionality used collections of liquids and solids blocks pre-and main gas purification. In addition, due to increased differential pressure between the internal and the external cavity of the filter element on a perforated frame possible destruction of the filter element.

The objective of the invention is to increase the reliability of the installation and its technological capabilities.

This object is achieved in that the device for investigation of gas and gas condensate wells, including installed in the building blocks of the preliminary and basic cleaning gas swirler, the gas flow meter with a diaphragm, units of measurement of pressure and temperature, collections of fluid and solids blocks pre-and main gas cleaning unit PR is t to the perforated frame, collections of liquids and solids is connected to the cavities of the blocks of the preliminary and main gas purification, case and elements of the plug type, according to the invention collections of liquids and solids is equipped with an optical liquid level indicator and mesh filters mechanical impurities, swirl unit for pre-cleaning gas is made in the form spieleloesung separator flow, and the frame of the filter element out of the perforations and installation of the filter element is equipped with a safety relief valve.

The drawing shows a diagram of the setup for studies of gas and gas condensate wells showing: 1, 4, 16, 18, 33 - quick poluchautsa connection; 2 - seal 3, 17 - detachable coil, 8, 13, 28-30 selection pressure; 5 - intermediate flange; 6 - spirality separator flow; 7 - casing slotted protective; 9 - partition; 10 - blade swirl; 11 - filter element; 12 - perforated frame of the filter element; 14 - case; 15 - safety relief valve; 19 - compensating clutch; 20, 31 - thermocarbon; 21 - detachable connection; 22, 23 - collections of liquids and solids; 24 - optical yasuni fitting; the 32 - unit flange narrowing.

The invention consists in the following.

Installation for studies of gas and gas condensate wells is mounted using a quick release poluchautsya compounds 1, 33 in the collection systems of production wells or flow lines directly to the mouths of the studied wells. The products of the studied wells are initially fed to spirality separator flow 6 block pre-treatment gas. On spiraeanthemum the separator flow 6 is a twisting flow, whereby the liquid and solids are discarded on the peripheral part of the protective enclosure delavau 7 are in the lower part of pre-treatment, from the collection of liquids and solids 22 this unit. The cleaned gas from the block prefilter enters the swirl vane 10 block basic cleaning, due to centrifugal force balances moisture and mechanical impurities are discarded on the housing wall 14, and further, as in the pre-cleaning gas flow to the collection of liquids and solids 23. The final gas cleaning takes place on the filter element 11 (aprilto flange narrowing 32 for measuring flow rate. The gas flow rate is calculated according to the measured pressure and temperature of the gas before and after the diaphragm device 32 and the diameter of the aperture.

Coming into the collections of the liquid and solids mixture first enters a strainer mechanical impurities 25, which remain solids production wells (particles of rocks collector clayey material of mud filtrate and others), and filtered fluid is directly in collections 22. 23. The accumulation of fluid in the collectors is controlled via optical liquid level indicator 24. The collections have a drain fittings 27 and valve samplers fluid 26. They are mounted to the unit body by means of the quick connection 21, which facilitates their Assembly and disassembly. Screen filters 25 are extracted from collections when disconnected from the housing unit after the end of the study wells in the specified mode, and their content is selected for subsequent quantitative and qualitative analysis.

The study of the well is changed by changing the aperture of the device flange narrowing 32.

To prevent destruction of the filter element 11 in large variations Yes the us perforation and installation of the filter element) is supplied with protective by-pass valve 15.

For easy and quick installation and dismantling installation, replacement of separate units installation consists of coaxially and serially connected by quick-release poluchautsya compounds (4, 16, 18) parts: blocks preliminary and basic cleaning gas in the housing 14, the compensating coupling 19 to the device flange narrowing 32. Compensatory clutch 19 is intended to change the axial dimensions of the installation Assembly when assembling and dismantling the installation. The plant is equipped with the nodes in the selection of gas pressure in all parts of the(8, 13, 28, 30), which may be optionally seats gas-sampling.

Using the described setup allows regulated gas dynamic studies of gas and gas condensate wells with effective separation of production wells in phase for subsequent analysis of their production capabilities and purposes of the working modes.

Literature

1. Guide the exploration wells/ Gritsenko, A. I., H. Aliyev S., Ermilov O. M. and others - M.: Nedra, 1995, S. 499-503.

2. RF patent №2070289, CL E 21 In 47/00, priority 01.02.1990.

Claims

Installation for studies of gas and gas condensate wells, including ustanovlennoy, the nodes measure pressure and temperature, collections of fluid and solids blocks pre-and main gas cleaning unit pre-treatment has a protective casing and the block main gas clean - cylindrical filter element on a perforated frame, collections of liquids and solids is connected to the cavities of the blocks of the preliminary and main gas purification, case and elements of the plug type, characterized in that the collections of liquids and solids is equipped with an optical liquid level indicator and mesh filters mechanical impurities, swirl unit for pre-cleaning gas is made in the form spieleloesung separator flow, and the frame of the filter element out of the perforations and installation of the filter element is equipped with a safety relief valve.

 

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SUBSTANCE: invention can be used in case of gas-lift operation of wells equipped by free piston-type installations. Invention envisages stopping well, connecting tube space and annular space in wellhead, recording bottom zone and wellhead pressures in tube and annular spaces, and computing well operation parameters using inflow curve plotted according to differences of bottom zone and wellhead pressures. Volume of produced fluid is found from potential output of formation and from condition of output of free piston. When comparing these volumes, parameters of well are computed in the base of minimum volume value.

EFFECT: optimized well operation.

2 dwg

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