RU2354826C2 - Method of continuous discrete indicator mark sampling from gas hole and device to this end - Google Patents

Abstract

FIELD: oil-and-gas industry.

SUBSTANCE: invention relates to oil-and-gas industry and can be used in analysing fluid dynamics of gas medium at hydrocarbons deposits and subterranean gas storages. The proposed method comprises forcing gas medium indicator marks representing gas-filled micro granules with the dispersion degree of 0.5 to 0.6 µ into the bench through different injection holes and sampling from output holes. Note that indicator mark sampling is realised by forcing gas through sampling tube along with controlling gas passing time and the hole rate of yield, the sampling tube gas flow rate is determined from mathematical expression. The content of micro particles in indicator mark is determined from mathematical expression. The invention covers also the device to embody the above-described method.

EFFECT: continuous sampling, higher sampling efficiency and validity of results.

3 cl, 1 ex, 2 dwg

Description

FIELD OF THE INVENTION

The invention relates to the oil and gas industry and can be used in the study of fluid dynamics of a gaseous medium in hydrocarbon fields, including underground gas storages.

State of the art

Known methods for researching wells, which include injecting a luminescent solution into a well, mainly fluorescence, followed by measuring the luminescence intensity along the wellbore to increase the reliability of detection of asbestos cores [see Ferronsky V.I. et al. Radioisotope research methods in engineering geology and hydrology. - M .: Atomizdat, 1977 .-- p.168; A.S. USSR No. 987554 from 07.28.81, class. G01V 9/00], of particular interest are the technical solutions indicated in a.s. USSR No. 1639/23 dated 05.16.88 and No. 1473405 dated 06.07.87

A known method of studying the dynamic processes of a multilayer natural gas field [see A.S. USSR No. 1684491 dated March 30, 89, class E21B

47/10]. According to the method, an indicator in the carrier, absent in natural gas, mainly helium, is introduced into the formation through the injection well, samples are taken from the production well, the time of indicator appearance in the production of the production well, and the time dependence of the indicator concentration in the latter are determined and the objects are communicated by the presence of an indicator in the product.

The disadvantage of this method is to obtain false data due to the ambiguity of the interpretation of the results obtained in multi-layer gas, oil and gas cap fields and underground gas storage facilities. It is ineffective to apply the known method simultaneously in several wells that open the same horizon (layer) or different horizons (layers) due to the ambiguity of the interpretation of the results due to the impossibility of identifying the arrival of helium from any particular injection well and the possibility of missing (losing) parts indicator wave due to the discreteness of fluid sampling. Repeated application of the method in one field is also impossible due to an increase in the background (residual) helium contents, a wave-like arrival of the indicator with a significant time delay. It is impossible to apply the known method for fractured reservoirs due to the fixation of only one maximum of the indicator arrival in the production of the producing well. In addition, the method is not applicable in gas and oil, with a gas cap, deposits with a high helium content in the produced products.

A known method of studying the dynamic processes of a gaseous medium [see US patent No. 4742873, cl. ЕВВ 47/10, publ. 05/10/08 g.]. According to the method, various indicators in a gas carrier are injected into injection wells, samples are taken from production wells and the concentration of indicators over time in the produced products is determined.

The disadvantage of this method is due to the fact that different indicators may have different properties with respect to reservoir conditions, which introduces a significant error in determining the objective picture of gas migration during operation of a multilayer hydrocarbon field.

As a prototype, a method has been adopted to study the dynamic processes of the gaseous environment of an underground gas storage [see RF patent No. 2167288, publ. 05/20/2001, class ЕВВ 47/00, 47/10]. According to the method, during a period of maximum pressure, indicators in a gas carrier are pumped through different central injection wells, an indicator of the same color is injected into each of them in the form of gas-filled microgranules with a degree of dispersion of 0.5-0.6 μm, and during a decrease in pressure to a minimum weighted average areas of magnitude at the same time take gas samples from producing wells, determine the changes in time of the concentration of indicators of each color, find the total number of indicator of each color received in each th injection well build maps and largest floating gas fraction detected direction situ and cross-flows and contoured gasdynamically different zones.

The disadvantage of the prototype is due to the fact that the sampling violates the technological mode of operation of a gas well, which consists in the fact that it is necessary to simultaneously take gas samples from production wells for a long time, which introduces a significant error in determining the volumetric picture of gas migration during the operation of underground gas storage.

Gas samples are taken by passing it through a fine-porous filter with an adhesive surface, taking into account the gas flow measured by a gas meter. That is, sampling is discrete and requires a large investment of working time for research.

Gas samples are passed through a fine-porous filter with an adhesive surface without taking into account its strength characteristics and gas consumption as a percentage of its flow rate.

A device for sampling gas from a well is known, into the reservoir of which a tracer marker is previously introduced, or otherwise the substance is a marker indicator.

From literary sources it is known [2, see Technology of tracer studies in order to identify ways of fluid migration during the formation of technogenic gas accumulations. Collection of scientific papers. Series Oil and gas. Issue 1, Stavropol, StSTU, 1998, pp. 77-86. The authors Varyagov SA, Arutyunov AE, Shamshin VI] that the purpose of tracer studies is to establish direct methods of technogenic migration routes of fluids. Liquid samples were taken from the wells with a separate bailer on the cable.

When extracting from the well, the fluid sample was poured into standard containers, then the fluid was filtered and the particles of the tracer in this sample were counted.

The drawback of the design of the device for taking liquid samples is the limited sample volume, which does not give a real picture of the event, the presence of a tracer marker on the filter can only give a picture of the existence of a phenomenon, for example, the presence of annular fluid flows. To increase the reliability of research results, multiple sampling of the liquid is necessary.

Sampling gas by the choke is problematic, and the use of a small-sized sampler for these purposes does not allow reliable information to be obtained even with repeated sampling, i.e. sampling and analysis is discrete.

Known sampling device [4, see.with. No. 1016496, M. cl. ЕВВ 49/08. Sampling device, publ. 05/01/83. Bull. No. 17. Auth. V.G. Kondratenko, G.A.Sobol].

The sampling device is a cylindrical hollow body with a pressure gauge, a locking mechanism in the body cavity, made in the form of a piston with a hollow rod and a retainer. The piston through the radial hole and the hollow rod communicates with the exhaust pipe at the lower position of the piston.

The design of the sampling device is installed at the mouth of the investigated well, after which the wellhead valve opens. Under the influence of gas pressure, the piston with the hollow rod moves to its lowest position, a part of the gas-liquid flow under investigation through the radial bore of the housing, the nozzle and the nozzle through the high-pressure pipe are fed to the separation unit, where the gas-liquid flow of existing wells is continuously measured and sampled.

The design flaws of the device

With all the positive advantages of the device, the drawback that was noted earlier remains, namely, discrete sampling is performed on a separation metering unit, which requires a long time to obtain sufficiently reliable information about the well operation and the productivity of the formation as a whole.

The quantitative parameters of the well’s operation are determined not by this measuring device, but by an external one, i.e. a separator. The device cannot carry out sampling and quantitative analysis of samples of a gas-liquid flow with a substance with a tag-tracer while continuously supplying part of the gas-liquid flow.

A device for installing a sensor for monitoring the parameters of gas-liquid flow [3, see US Pat. RF number 2094610, 6 ЕВВ 49/08, publ. 10/27/97. Bull. No. 30. Authors A.I. Varman, F.P. Donskoy, V.P. Patray].

The device is installed on the existing fund of oil and gas wells. It consists of a body with a ball shut-off valve, with which a glass with a hollow rod, piston, and a removable tip is docked.

Holes are made in the housing through which communication with the atmosphere is carried out. In the walls of the glass and the housing, channels are made that connect the cavity of the housing with the cavity above the locking member. The tip is installed on the lower end of the hollow rod and goes inside the object under study.

Disclosure of invention

The technical result in the method of sampling gas with a tag-tracer substance is achieved using a wellhead device installed as a part of wellhead valves on the flange of the upper valve with the sampling tube being inserted into the axial channel of the fountain tree, with the lower end located at the level of the outlet pipe to the gas collection to the collector.

The diameter of the sampling tube is determined based on the parameters of the well, technological and strength characteristics of the filter membrane.

The technical result on the implementation of the method is also achieved using the wellhead device, installed if necessary, to conduct research on the annular and in-tube space on the valves of the annular and annular space.

The wellhead device for implementing the method consists of a detachable body with inlet and outlet pipes. In the place of the housing connector, a double filter is installed, including a filter membrane and a ceramic filter, characterized by different permeability and different strengths.

The filter membrane with lower permeability is installed first to the flow of the filtered gas and covered with a layer of glue of the estimated thickness.

The device is equipped with a gas flow regulator, pressure gauge and non-return safety valve.

An analysis of the inventive step showed the following. The set of technological methods for sampling gas at an existing well and evaluating the results obtained by the number of introduced particles of the tracer-tag substance captured and accumulated on the sticky layer of the device’s filter membrane, with subsequent interpretation of the results on gas consumption and sampling time, were not identified by available sources in the scientific, technical and patent literature.

The design of the wellhead device that passes through a known measured gas flow rate and filters the tracer particles on the surface of the filter membrane with no fixation of the latter in the adhesive layer, estimated thickness and subsequent calculation of the number of tracer particles has not been revealed.

The technical result is as follows.

1. Increases the efficiency of gas sampling with a tag-tracer substance and increases the reliability of research results.

2. The continuity of sampling is ensured by passing the calculated volume of gas through the device for a long time during gas production and trapping on the sticky layer of glue of the filter-membrane, followed by assessment of the reservoir capacitance characteristics by the number of tracer particles captured in comparison with the total number of tracer particles, introduced into the reservoir through neighboring wells.

3. It is possible to use the same device for gas sampling with a tag-tracer substance and annular, in-tube and annular space.

The implementation of the method of collecting substances-tags-tracer and the study is carried out using the device, which is presented in the context of figure 1.

In figure 2. piping of the wellhead and installation of the device as part of the fountain fittings for gas sampling with the substance-tag-tracer from the lift string, annulus and annulus.

The technical result that can be obtained by implementing the present invention is as follows: the reliability of the research is increased due to the continuous sampling of the indicator from the gas stream under optimal conditions that do not violate the technological process of operating the well.

The technical result is achieved by the fact that in the method of continuous discrete sampling of the substance of the label of the indicator from a gas well, based on the introduction into the formation through different injection wells of indicators in a gas carrier in the form of gas-filled microgranules with a degree of dispersion of 0.5-0.6 μm, sampling from producing wells and determining the concentration of indicators over time in the production of producing wells, while the sampling of indicators is carried out by passing part of the gas through a device (sampler) with time control Meni gas passage and the well production rate, the gas flow rate through the sampling probe is determined from the relation

,

,

where d _int.pr - the inner diameter of the sampler body, m;

Q _gpr - gas flow through the sampler, m ³ / s;

ρ ₂ - gas density, kg / m ³ and the content of indicator microparticles is determined from the ratio

C _i = K _i · (Q _g.p.i · t _i ) ^-1 ,

where K _i is the number of indicator microparticles on the surface of the filter membrane, pcs .;

Q _gr.i - the average gas flow through the sampler for a period of time passing (filtering) gas t _i , (s), m ³ / s.

A device for implementing the method includes a detachable housing with a sampling tube for supplying and introducing gas, a pressure gauge, a flow regulator and is equipped with a double filter including a membrane and a ceramic filter having different permeabilities, the filter membrane being coated on the side of the gas stream with an adhesive layer, specific whose mass is determined from the relation

where M _beats.cl - the specific gravity of the adhesive, kg / m ² ;

d _frequent - the diameter of the microparticles of the indicator, m;

ρ _cells - the density of the adhesive, kg / m ³ ,

and the diameter of the sampling tube is determined from the ratio

d _mp = d _int.NKT · (Q _gpr / Q _well ) ^0.5 ,

where d _vn.NKT - the inner diameter of the pipes of the elevator column (tubing), m;

Q _SLE - well flow rate, m / s,

moreover, a sampling tube for sampling gas from the annulus is made in the form of a half ring, the diameter of which is determined from the ratio

where d _vn.kol - the inner diameter of the production casing, m;

d _nar.NKT - the outer diameter of the pipes of the elevator column, m

An analysis of the inventive step showed the following. The set of technological methods for sampling gas at the existing well stock and evaluating the results obtained by the number of introduced particles of the tag material and trapped on the filter membrane, with subsequent interpretation of the results on gas consumption and sampling time, have not been identified using available sources of scientific, technical and patent information information.

The design of the wellhead device, which passes through the measured flow rate of the produced gas filtered through the filter membrane, with the retention of particles of the label substance on its sticky surface and the subsequent calculation of their quantity, has not been revealed.

Brief Description of the Drawings

The implementation of the method of continuous discrete sampling of the indicator label substance from the gas well is carried out using a device whose construction is illustrated by the following drawings: where Fig. 1 shows a sectional view of the structure of the wellhead device in the gas passage position with the particles of the label substance, Fig. 2 - piping of the mouth of an existing well and a device for sampling gas with a tagging substance from the pipe lift string (a), as well as from the annular (b) and annular (c) space.

The implementation of the invention

The device consists of a detachable housing 1 with a supply pipe 2 and a discharge pipe 3. In the middle part of the split housing 1, a filter membrane 4 with an adhesive surface, for example, an adhesive layer, and a ceramic filter 5 with different permeabilities constituting a double filter are successively installed. In addition, to maintain the integrity of the filter membrane 4 and the stability of sampling, the detachable housing 1 is equipped with a safety valve 6. The force (pressure) of the operation of the safety valve 6 is regulated by a screw (not shown). The pressure inside the split housing 1 is measured with a pressure gauge 7.

The supply pipe 2 is equipped with a set of sampling tubes 8 for the delivery of gas samples inside the split housing 1.

A gas flow regulator (not shown) is installed on the outlet pipe 3.

Consider the operation of the device when taking gas samples with a tag-tracer substance from an elevator pipe string while producing natural gas.

For this, the device is equipped with a sampling tube 8, of the estimated diameter and length, installed in the inlet pipe 2, and is fixed on the upper flange of the valve of the fountain valves with the closed main valve (not marked).

Open the main valve, and the upper valve, and the valve for supplying gas to the reservoir. Determine and maintain the calculated pressure drop in the device and the gas flow rate regulator estimate the total flow rate during the study, which is compared with the flow rate of the well.

Then, after a calculated period of time, the gas supply to the detachable housing 1 of the sampling device is stopped, the filter membrane 4 of lower permeability is removed and the number of particles of the label substance on its surface is counted under laboratory conditions, after which the results are correlated by the number of introduced particles into the test formation. When the differential pressure increases above the permissible pressure relief valve 6 is activated and part of the gas is released into the atmosphere.

For the variant of sampling from the annulus, the device is equipped with a sampling tube 8 in the form of a half-ring inserted into the annular gap between the elevator string and the production string, and gas sampling is performed when at least 10% of the living section of the annular space between the elevator string and the casing is overlapped.

The diameter and length of the sampling tube 8 is determined based on the design parameters of the fountain fittings, and the inner diameter of the pipes of the elevator string, and the mode of operation of the wells.

At the same time, it must be borne in mind that the filter membrane 4 of lower permeability has known strength characteristics, from which it is possible to determine the gas flow rate and the diameter of the sampling tube 8.

The gas pressure head should not exceed the strength of the material of the filter membrane 4 with lower permeability, adopted σ = 0.2 · 10 ⁶ PA.

The velocity head created by the gas flow on the filter of lower permeability will be determined

where ρ _g is the gas density, kg / m ² ;

V ² _gc - critical velocity of gas in the gas sampler, m / s.

Then

So that the flow of moving gas does not lead to the destruction of the filter membrane 4 of lower permeability, the gas flow through the device (sampler) must satisfy the inequality

- максимальный расход газа через пробоотборник, м³/с;Where

- maximum gas flow through the sampler, m ³ / s;

- внутренний диаметр разъемного корпуса 1 пробоотборника в месте расположения фильтра-мембраны меньшей проницаемости, м.

- the inner diameter of the detachable housing 1 of the sampler at the location of the filter membrane of lower permeability, m

On the other hand, so that the tracer does not exit or fall out of the gas stream, the gas flow through the sampler must satisfy the inequality

- минимально возможный расход газа через пробоотборник, м³/с;Where

- the minimum possible gas flow through the sampler, m ³ / s;

V _gmin is the minimum gas velocity at which the tracer microgranules do not exit the flow, m / s, and which is 5 · 10 ^-3 m / s.

Based on the foregoing, the gas flow through the sampler will be determined from the inequality

Where does the diameter of the sampling tube 8, taking into account the above reflected dependence, be determined

d _ave.mp = d _tubing · (Q _g.pr / Q _bore ) ^0.5 ,

where d _tubing - the inner diameter of the pipes of the elevator column, m;

Q _SLE - gas flow rate of the investigated well, m ³ / s.

The method of sampling gas from an existing well using the proposed device is as follows.

Open the valves on the Christmas tree and through the sampling tube 8 of a given cross section, gas is supplied to the detachable housing 1 of the sampler.

The pressure drop across the membrane filter 4 and ceramic filter 5 is determined, and the gas flow regulator sets the flow rate and estimates the total volume of gas passed through the sampler during the sampling or during the measurement. The gas sampling time and its total flow rate through the sampler are compared with the total well flow rate. Then stop the gas supply to the detachable housing 1 of the sampler, disassemble and remove the filter membrane 4 with particles of tracer microgranules adhering to its sticky surface.

After that, they calculate the total number of particles of the tracer on the surface of the filter membrane 4 and evaluate the total concentration of microspheres of the tracer at a certain point in time from the expression

C _i = K _i · (Q _g.p.i · t _i ) ^-1 ,

where K _i is the number of tracer microgranules on the surface of the filter membrane, pcs .;

Q _gr.i - gas flow through the sampler, m ³ / s;

t _i is the time of sampling (filtering) gas through the sampler, equal to the time between filter changes of lower permeability, s;

, м³.C _i is the concentration of tracer microgranules at a time

, m ³ .

By the concentration of C _i and the magnitude of its change in time, the reservoir geofluidodynamic parameters are judged [see Lukker L., Shestakov V. M., “Modeling of groundwater migration”. M .: Nedra, 1986, 208 pp.].

It should be noted that when the pressure drop across the filter-membrane 4 increases, the safety valve 6 is activated and part of the gas is released into the atmosphere.

The design of the filter membrane 4 of lower permeability was developed taking into account the need for filtering the gas, trapping and accumulating tracer microspheres on its surface. Since its surface is covered with glue with an estimated thickness determined from the dimensions of the tracer microgranules, glue is applied to the filter surface with a specific gravity

where d _frequent - the diameter of the microspheres of the tracer, m;

ρ _cells - the density of the adhesive, kg / m ³ .

For the variant of sampling from the annulus, the device (sampler) is equipped with a sampling tube 8 in the form of a half-ring inserted into the annular gap between the elevator column pipe and the production column, and gas sampling is carried out when at least 10% of the living section of the annular space is overlapped.

The sequence of gas sampling from the annulus and the interpretation of the results are similar to those for gas sampling from an elevator string.

An example of a specific implementation of the method.

We accept the flow rate of wells

The inner diameter of the pipes of the elevator column d _mp = 0,062 m

The outer diameter of the pipes of the elevator column (tubing) d _tubing = 0,073 m

Diameter of production casing pipes:

- outdoor D = 0.168 m. - internal D _int = 0.148 m.

The internal diameter of the sampler in the cross section of the installation of the membrane d _CR = 0,032 m

The density of the gas ρ _{g (NU)} = 0,668 kg / m ³ .

The strength of the material of the filter membrane σ = 0.2 · 10 ⁶ PA.

The size of the microspheres of the tracer d _frequent = 0.5 ÷ 0.6 μm.

Glue density ρ _cells = 1200 kg / m ³ .

Gas pressure p = 30 kgf / cm ² = 3.0 MPa (Khadum horizon of the Severostavropol UGS).

Determine the density of gas in the well

where p ₀ - atmospheric pressure, Pa.

From the condition of the membrane strength, we determine the critical gas velocity (velocity head), m / s

This speed corresponds to the gas flow through the membrane of the sampler:

The minimum gas velocity to ensure the retention of tracer _microspheres in a stream V _gmin = 5 · 10 ^-3 m / s. The gas flow through the membrane corresponding to this speed:

In this way

4.02 · 10 ^-6 <Q _gpr <0.362

For further calculations, we take the average flow rate Q _gpr = 0.18 m ³ / s. From the ratio of gas flow rates in the well and through the sampler, we determine the diameter of the sampling tube (internal)

.

.

Further, in laboratory conditions, the tracer is counted and its concentration is determined by the formula

C _i = K _i · (Q _g.p.i · t _i ) ^-1 .

Glue specific gravity

.

.

Filter area

.

.

Thus, the surface of the filter must be applied

M _specific.cl · S _f = 0.00048 · 0.0008 = 0.384 · 10 ^-6 kg = 0.384 · 10 ^-3 g = 0.384 mg of glue. Layer thickness

.

.

The adhesive layer uniformly distributed over the surface of the filter should be about 0.4 microns.

We calculate the diameter of the sampling tube for the same flow rates when taking gas from the annulus:

Radial clearance: Δr = (0.148-0.073) / 2 = 0.0375 m = 37.5 mm.

Checking the conditions for fulfilling the requirement of overlap of at least 10% of the living annular cross-section:

10% of the annular cross-sectional area is

f _10% = (0.148 ² -0.073 ² ) 0.785 0.1 = 0.0013 m ² .

A sampling tube 8 with a diameter of 38 mm, cut along the axis in the form of a half ring and inserted through the valve into the annulus to the stop in the tubing, will close an area equal to

f = d _mp.m · Δr = 0.038 · 0.0375 = 0.001425 m ² > 0.0013 m ² - the condition is met.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- increasing the efficiency of gas sampling;

- increasing the reliability of research due to the continuous sampling of the indicator from the gas stream under optimal conditions for a long time;

- simplifying the design and improving the reliability of the device.

Information sources

1. Varyagov S.A., Arutyunov A.E., Shamshin V.I. The technology of tracer studies to identify fluid migration paths during the formation of technogenic gas accumulations / Sat. scientific works. Series “Oil and Gas” - Issue 1. - Stavropol StSTU, 1998. - p.77-86.

2. Beketov SB, Varyagov SA, Trunov NM, Tarasov MG et al. Technology of tracer studies in order to identify fluid migration paths during the formation of technogenic gas accumulations. Construction of gas and gas condensate wells / Sat. scientific works, M .: VNIIgaz, 1998.

3. Pat. RF № 2094610, M. cl. ЕВВ 49/08. Device for installing a sensor for monitoring the parameters of gas-liquid flow. Publ. 10.27.97. Bull. No. 30. Auth. Warman A.L., Donskoy F.P., Patrai V.P.

4. A.S. No. 1016496, M. cl. ЕВВ 49/08. Sampling device. Publ. 05/07/83, Byul. No. 17. Auth. Kondratenko V.G., Sobol G.A.

5. A.S. No. 176218, M. cl. ЕВВ 43/00. A method for detecting leaks in the production string of a gas well. Publ. 11/02/65, bull. No. 22. Auth. Ashuev A.P., Balabanov V.F. and etc.

Claims (3)

1. The method of continuous discrete sampling of the substance of the label-indicator from a gas well, including the introduction into the reservoir through different injection wells of indicators in a gas carrier in the form of gas-filled microspheres with a degree of dispersion of 0.5-0.6 μm, sampling from production wells, characterized the fact that the sampling of indicators is carried out by passing gas through a sampling pipe with control of the time of gas passing and flow rate of the well, and the gas flow through the sampling pipe is determined from the ratio

where d _int.pr - the inner diameter of the housing of the sampling tube, m;
Q _gpr - gas flow through the sampling tube, m ³ / s;
ρ ₂ - gas density, kg / m ³ ,
and the content of indicator microspheres is determined from the ratio
C _i = K _i · (Q _g.p.i · t _i ) ^-1 ,
where K _i is the number of microparticles of the indicator on the surface of the filter membrane, pcs .;
Q _gr.i - average gas flow through a sampling tube for a period of time passing (filtering) gas (s), m ³ / s;
t _i is the time of sampling (filtering) gas through the sampler, equal to the time between filter changes of lower permeability, s;
C _i - concentration of microgranules at a time

2. A device for continuous discrete sampling of the label substance from a gas well, including a detachable body with a sampling tube for supplying and introducing gas, a pressure gauge, a flow regulator, characterized in that it is equipped with a double filter consisting of a filter membrane and a ceramic filter with different permeability, and the filter membrane is coated on the side of the gas stream with a layer of glue, the specific gravity of which is determined from the ratio

where M _beats.cl - the specific gravity of the adhesive, kg / m ² ;
d _frequent - the diameter of the microparticles of the indicator, m;
ρ _cells - the density of the adhesive, kg / m ³ ,
and the diameter of the sampling tube is determined from the ratio
d _tr = d _int.NKT · (Q _gpr / Q _well ) ^0.5 ,
where d _vn.NKT - the inner diameter of the pipes of the elevator column (tubing), m;
Q _SLE - well flow rate, m ³ / s. 3. The device according to claim 2, characterized in that the sampling tube for sampling gas from the annulus is made in the form of a half ring, the diameter of which is determined from the ratio

where d _vn.kol - the inner diameter of the production casing, m;
d _nar.NKT - the outer diameter of the pipes of the elevator column, m

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