Method of analysing combination of hydrocarbons contained in drilling fluid, and corresponding apparatus

FIELD: chemistry.

SUBSTANCE: method involves extraction of drilling fluid in an extractor in order to continuously obtain a stream of extracted gases at the output of the extractor, containing the analysed hydrocarbons and at least one spurious compound which is not water and is more polar than the analysed hydrocarbons. The gas stream is then carried from the extractor over a transfer line into a separation column to separate the analysed hydrocarbons depending on their elution time in the separation column. Further, successive detection and/or determination of the amount of each analysed hydrocarbon is carried in a detector located at the output of the separation column. One or each spurious compound can have elution time in the separation column ranging from the elution time of the first analysed hydrocarbon in the separation column to the elution time of the last analysed hydrocarbon in the separation column. The method also involves passing the gas stream through a surface for chemical and/or physical interaction with the spurious compound which is in contact with gases between the output of the extractor and the input of the separation column, for selectively holding said spurious compounds without delaying the analysed hydrocarbons and so as to prevent washing-off of the spurious compounds in the separation column.

EFFECT: high accuracy of qualitative and quantitative evaluation of analysed hydrocarbons, and high rate of analysis.

 

The present invention relates to a method of analyzing a range of hydrocarbons contained in the drilling fluid, comprising the following steps:

extraction of the gases contained in the solution in the extractor to continually receive the output of the extractor stream extracted gases containing the analyzed hydrocarbons and at least one parasitic connection, non-water and more polar than the analyzed hydrocarbons;

- transfer gas flow line transfer, connected to the output of the extractor;

- conducting the gas stream in the separation column connected to the line transfer, for the Department analyzed hydrocarbon according to their elution time in the separation column;

sequential detection and/or determination of the amount of each of the analyzed hydrocarbon using a detector located at the outlet of the separation column;

moreover, one or each of the parasitic connection can have the elution time in the separation column of elution time in the separation column first analyzed hydrocarbon to the elution time in the separation column last analyzed hydrocarbon.

It is known that when drilling oil wells or wells for another affluent (in particular gas, steam, water) the analysis of gaseous compounds contained in the drilling fluids, a pop-up from the well. This analysis allows the reconstruction of the geological sequence of the reservoir, passable during drilling, and is the stage of identifying opportunities exploitation of the detected fluid.

This analysis, carried out in continuous mode, contains two main stages. The first stage is the extraction of carrier gas drilling fluids (such as hydrocarbons, carbon dioxide, hydrogen sulfide, helium, and nitrogen). The second stage consists of qualitative and quantitative assessment of the extracted gases. In the first stage are often used degassers with mechanical agitation type described in FR-A-2 790 799. Gases are separated from the drilling mud, mixed with the carrier gas introduced into the chamber, is carried out by suction through the line extraction gas to the analyzer, which allows to quantify the extracted gases.

For this analyzer contains a separating column for the sequential separation of the different analyzed hydrocarbons in accordance with their time of elution in the column, at least one detector and computing equipment capable of qualitatively and/or quantitatively evaluate each analyzed hydrocarbon, consistently and is involved from the column.

During the drilling of oil wells it is known, for example, sequential analysis and quantification of hydrocarbon, C1-C5. In certain cases, system analysis allows, in addition, to determine the possible presence of hydrocarbons, C6-C8.

This analysis sometimes does not give full satisfaction, in particular, when used drilling fluids based on synthetic oils.

Such drilling muds can contain parasitic compounds having the time of elution, lying in the interval from the time of elution of the first analyzed hydrocarbon to the time of elution of the last analyzed hydrocarbon. These parasitic compounds are due to their nature in the components of the drilling fluid or the result of chemical reactions between the compounds of mud, when the solution is exposed to high temperatures and pressures encountered in deep wells.

To resolve this issue in the article "Impact of Modern Deepwater Drilling and Testing Fluids on the Geochemical Evaluations", published in Organic Geochemistry, V. 35 (2004), p. 1527-1536, the described method of analysis in which successive samples of the drilling fluid taken at the output of the wells are treated with an organic solvent for extraction of parasitic compounds that interfere with the analysis Plevo the cities. Such methods are cumbersome to use and may not be built into the system for continuous analysis.

The alternative proposed in this article consists in the mathematical treatment of elution spectra obtained in the detector at the outlet of the separation column to subtract from these spectra, the peaks produced by parasitic compounds. However, this method is still inaccurate, and should still be subjected identify and accurately quantify these spurious connections.

Therefore, the aim of the invention is to develop a method of analyzing a range of hydrocarbons contained in the mud, which will allow you to simply get an accurate qualitative and/or quantitative evaluation of the analyzed hydrocarbons, and the analysis will be fast enough so that you spend online.

For this purpose, the object of the invention is a method of the type specified above, characterized in that the method comprises a step of conducting the gas flow through the surface chemical and/or physical interaction with the parasitic compound, and the surface interaction is in contact with the gases between the outlet of the extractor and the entrance of the separating column to selectively hold on to it or each parasitic connection, not delaying analyzed hydrocarbons to interfere in what miwani or each parasitic compounds in the separation column between the elution time of the first analyzed hydrocarbon and the elution time of the last analyzed hydrocarbon.

The method according to the invention can contain one or more of the following characteristics, taken individually or in any technically possible combinations:

- surface interaction can interact with one or each of the parasitic connection on the mechanism of hydrogen bond, dipole attraction or ion exchange to selectively retain one or each of the parasitic connection, not delaying analyzed hydrocarbon;

- when passing a gas stream over the surface of the interaction of more than 90 mol% of each polar parasitic connection is retained on the surface of interaction, and less than 10 mol% of the analyzed hydrocarbons are retained on the surface interaction;

- surface interaction contains unmodified silicon dioxide, silicon dioxide, modified electron-donating groups, silicon dioxide, filled with magnesium, aluminum trioxide or a copolymer of styrene with divinylbenzene;

- surface interaction is a removable cartridge that is installed in the line transfer between the output of the extractor and separator column;

- surface interaction is in the pre-separation column located above the separation column;

- surface interaction contains polyethylene glycol;

p> - pre-separation column has a coefficient Chrompack above 8, favorably not higher than 20;

- analyzed hydrocarbons include hydrocarbons, C1-Cnand n is less than or equal to 10, a positive n is less than or equal to 8; and

is the or each polar parasitic compound contains at least one oxygen atom, nitrogen atom or sulfur atom.

The object of the invention is, furthermore, an analytical unit for analyzing the totality of the hydrocarbons contained in the drilling fluid containing:

- extractor gases contained in the solution, and the extractor has a yield of extraction of gas, in order to continuously receive the output stream is extracted gases containing the analyzed hydrocarbons and at least one parasitic compound, other than water and more polar than the analyzed hydrocarbons;

- line transfer of the gas stream connected to the output of the extractor;

analyzer, containing:

* separation column connected to the line transfer, for the Department analyzed hydrocarbons according to their elution time in the separation column;

* the detector located at the outlet of the separation column to consistently detect and/or quantify each analyzed hydrocarbon;

moreover, the parasitic connection may have time which I elution in the separation column, of elution time in the separation column first analyzed hydrocarbon and before the elution time in the separation column last analyzed hydrocarbon,

wherein the analysis unit includes a surface chemical and/or physical interaction with the parasitic compound, and the surface interaction is in contact with the gases between the outlet of the extractor and the entrance of the separating column to selectively retain one or each of spurious connections, not delaying analyzed hydrocarbons, to prevent leaching of this one or of each of the parasitic compounds in the separation column between the elution time of the first analyzed hydrocarbon and the elution time of the last analyzed hydrocarbon.

The block according to the invention can have one or more of the following characteristics, taken individually or in any technically possible combinations:

- it contains a removable cartridge having a surface interaction, and the removable cartridge is installed in series in the line above transfer separation column; and

- it contains a pre-separation column containing surface interaction, and pre-column separation octanal is provided sequentially in a line transfer or below the line of transfer, above pre-separation column.

The invention will be best understood by studying the following description, given solely as an example and made with reference to the attached drawings, on which:

- figure 1 is a schematic view in vertical section of the drilling rig, equipped with the first analytical unit according to the invention;

- figure 2 represents a schematic view in vertical section of the main elements of the analytical unit according to the invention;

- figure 3 is a view in perspective of a triangular sides removable cleaning cartridge located in the analytical unit of figure 2;

- figure 4 shows the chromatogram of the sequential elution of hydrocarbon, C1-C5measured when carrying out the method according to the invention and, for comparison, the implementation of the method according to the prior art;

- figure 5 is a view similar to figure 2, for the second analytical unit according to the invention.

Everywhere hereinafter, the terms "above" and "below" refers to the direction normal circulation of the solution in the line.

Analytical unit according to the invention is applied, for example, in the installation of 11 drilling for oil.

As shown in figure 1, this installation 11 includes drill pipe 13 located in Polo the tee 14, drilled rotating the drill bit 15, onshore facility 17 and the first analysis unit 19 according to the invention.

Drill pipe 13 is located in the cavity 14, done under the land 21 of the rotating drill bit 15. This pipe 13 contains at surface level 22 wellhead 23, equipped with a drain pipe 25.

Drill bit 15 contains the drill head 27, drilling the shell 29 and the cylinder 31 for pumping fluid.

Drill head 27 includes a tool 33-drilling underground rocks 21. It is installed on the lower part of the drilling Assembly 29 and is positioned inside the drill pipe 13.

The projectile 29 contains a set of hollow drill pipe. These pipes are limiting the internal space 35, which allows you to deliver the liquid from the surface 22 to a drilling head 27. On the upper part of the shell 29 fortified cylinder 31 for pumping fluid.

Ground installation 17 includes support means 41 and bring the drill bit 15 in rotation, the tool 43 to pump drilling fluid and vibrating screen 45.

Means of pump 43 is connected hydraulically with uploaders head 31 for introduction and circulation of the solution in the inner space 35 of the drill 29.

Vibrating screen 45 collects the solution, filled with drill cuttings coming out of the drain pipe 25, and separates the liquid from the solid drill cuttings.

<> As shown in figure 2, analysis unit 19 includes a tool 51 selection of mud, branches off from the discharge pipe 25, a gas extractor 53 and line 54 for transfer of extracted gas, coupled to the extractor. Analytical block 19 contains, in addition, the analyzer 55 extracted gases, in which the line transfer 54, and according to the invention, the tool 56 purification of extracted gases are installed sequentially in the line 54 between the extractor 53 and the analyzer 55.

Tool selection 51 includes a nozzle 57 for liquid extraction, outstanding in the drain pipe 25, the connecting pipe 59 and the peristaltic pump 61 with adjustable capacity.

Alternatively, the tool selection 51 is inserted into the hole in the tank for receiving the liquid, which ends with a return pipe 25. In another embodiment, the tool selection 51 is inserted into the hole in the vessel, means for pumping drilling fluid 43.

The extractor 53 contains the camera 63, line 65 for supplying drilling fluid in the chamber 63, line 67 discharge of drilling fluid from the chamber 63, entry 69 for introducing a carrier gas into the chamber 63 and the outlet 71 for removing the extracted gases out of the chamber 63.

Luggage 63 comprises a sealed vessel, the internal volume of which is, for example, from 0.4 liters to 3 liters. This chamber 63 contains the lower h is the terrain 73, in which circulates drilling fluid, and the upper portion 75 having a gas space. In addition, the camera 63 equipped with stirring 77 containing the mixer 79, prominent in the chamber 63 and driven in rotation by the motor 81 mounted on the upper part 75 of the chamber 63. Mixer 79 includes a mixing mechanism 83, immersed in the drilling mud.

Line 65 for supplying drilling fluid is between the output of the peristaltic pump 61 and inlet 85 arranged in the bottom 73 or the top 75 of the chamber 63.

This feed line 65 may be equipped with means of heating the drilling fluid (not shown)to bring the temperature of this mud to values from 25 to 150°C, preferably from 60 to 90°C.

Discharge line 67 passes between the overflow 87, arranged in the upper part 75 of the chamber 63, and a settling tank 89, intended for receiving the drilling fluid discharged from the device 53.

Alternatively, settling tank 89 is formed admissions bath 90 for liquids to be extracted from the shale shakers 45, shown in figure 1.

In this example, the discharge line 67 contains consistently top portion 91 located obliquely to the bottom, forming an angle with the horizontal of about 45°, the curved portion 93, forming a siphon, and the lower part 95, essentially vertical, open at its lower end 97, located opposite the aka 89, above the level of the liquid contained in the tank 89.

The drilling fluid is collected in a settling tank 89 and in the bath 90, return to the tool downloads 43 on line 98 recirculation of the mud.

The inlet 69 is released in the upper part 75 of the chamber 63. It is positively connected with a source (not shown) of carrier gas, such as nitrogen or helium. Alternatively, the inlet ends 69 into the space surrounding the chamber 63.

A hole 71 for the release of extracted gases confined in the upper part of the chamber, near the mixer 75. It contains the coupling 101 for connection with the line transfer 54.

Line 54 is installed on the clutch 101. Line 54 is able to continuously take the flow of gases extracted from the drilling mud in the upper part 75 of the camera to hold the flow to the analyzer 55.

As will be seen below, this gas stream contains analyzed hydrocarbons, water vapor and higher cleaners 56 at least one parasitic compound, other than water and more polar than the analyzed hydrocarbons, which can interfere with the analysis of the analyzed hydrocarbons. Polar parasitic compounds in question, will be more precisely defined below.

Analyzed hydrocarbons are, for example, hydrocarbons, C1-Cnwith n less than or equal to 10, a positive n and less and equal to 8.

As will be seen below, the polar parasitic compounds other than water, depend on the nature of the used drilling mud and conditions, exposed to the solution. These compounds contain at least one heteroatom, in particular an oxygen atom, nitrogen or sulfur.

In particular, these parasitic compounds contain, in addition, a hydrocarbon group, C1-C10in particular, C1-C5linear, branched or cyclic, saturated or unsaturated. They contain, for example, alkyl, or alanovoy, or alginovu group C1-C10substituted by one or more groups-OH, -NH2, -NH-R1, -NR2R3, -OR4, -SH, -SR5, -R6COO(R7), in which R1-R7independently of one another correspond to the alkyl groups of C1-C10.

Parasitic compounds are, in particular, alcohols, simple or complex esters that contain less than 10 carbon atoms, in particular less than 5 carbon atoms 5.

In this example, the line transfer 54 connects the camera button 63 near the mouth of the bore 23, in a hazardous area analyzer 55 at a distance from the wellhead 23, non-explosive area, for example in a chamber with high pressure. Alternatively, the line 54 is very short, and the analyzer 55 is located in a hazardous area near his summe is zi wellhead.

Line transfer 54 is preferably made of a material which is inert in respect of gaseous compounds, extracted from the drilling mud, such as steel, polyethylene (PE) or PTFE. It has a length ranging for example from 10 cm to 500 m

Line transfer 54 is provided at the top and bottom, the separator 103, flow regulator 105, located near the chamber 63, a vacuum pump 107 for holding the extracted gases and ending above the pump 107 branch 109 for connection to the analyzer 105.

The separator 103 contains at least one cold surface to condense the water so by condensation to remove essentially all of the water vapor present in the extracted gas.

Flow control valve 105 is formed in the form of a tube having graduated narrowing cross-section. This control determines the volume flow rate of extracted gas circulating in line 54. This speed is, for example, from 300 cm3per minute to 2000 cm3in a minute, favorably equal to 500 cm3a minute.

The pump 107 allows you to hold by suction extracted gases from the chamber 63 to the analyzer 55. It is near the analyzer 55. It has an input connected to the line 54 in parallel with the branch 109, and the outlet leading to the atmosphere.

Branch 109 engaged is moved above the pump inlet 107. It can take about 10% of the volumetric flow of extracted gas circulating in line 54, and the rest of the flow of extracted gas circulates through the pump 107 to be dumped into the atmosphere.

The analyzer 55 contains the column 121 separation of the analyzed hydrocarbon detector 123 for sequential detection of hydrocarbons separated in the separation column 121, and a means 125 qualitative and/or quantitative evaluation of the analyzed hydrocarbons detected by the detector 123.

The separation column 121 is a gas chromatographic separation column. This column is filled with, for example, a stationary phase in the form of a gel, allowing selective solubilisate hydrocarbons in the gel to provide selective retention (gas-liquid chromatography). Alternatively, the column has a hard surface capable of interacting with the analyzed hydrocarbons to selectively hold them depending on their affinity for the surface (gas-solid chromatography).

The separation column is capable of sequentially eluted analyzed hydrocarbons depending on the number of atoms they contain (from C1to Cn), from a stream injected at the entrance, containing a given point in all analyzed hydrocarbons. The analyzed coal is torodi out of the column 121 with different elution times, components from 10 to 100 C.

In the context of the present invention and everywhere the polar parasitic compounds" refers to compounds more polar than the analyzed hydrocarbons, and in which the elution time in the separation column 121 may lie in the interval from the time of elution of the first analyzed hydrocarbon, namely hydrocarbon, C1until the time of the elution of the last analyzed hydrocarbon, namely hydrocarbon, Cnif these polar parasitic compounds were introduced into the column 121 simultaneously analyzed with hydrocarbons.

The detector 123 may be, for example, a flame ionization detector (FID) or thermal conductivity detector (TCD). If necessary, the detector may be a mass spectrograph, depending on the desired analysis of gases.

Means of qualitative and/or quantitative evaluation 125 can detect hydrocarbon, C1-Cnwith n less than or equal to 10, favorably with n less than or equal to 8, to detect their presence in the gas stream, and is able to determine the quantitative content of at least hydrocarbon, C1-C5.

The cleaner 56 is able to selectively retain polar parasitic compounds present in the gas stream, the elution time in which the separation columns is 121 may be from the time of elution of the first analyzed hydrocarbon to the time of elution of the last analyzed hydrocarbon.

In the example shown in figure 2, the cleaner 56 contains a cartridge 131 mounted sequentially on the branch 109, below the connection with the vacuum pump 107 and above the connection with the separation column 121.

As shown by figure 3, the cartridge 131 contains four sections 133, distributed axially about the axis X-X', and each can be set consistently on the branch 109 can be changed.

To that end, each branch 133 contains the front nozzle 135 and the rear nozzle 137, intended for connection respectively to two successive sections of branch 109. These nozzles 135, 137 are, for example, a LUER-type nozzles or quick couplings LEGRIS.

Each branch 133 specifies the internal volume 139, containing a solid phase in the form of powder or granules. Solid phase defines a surface 141 of chemical and/or physical interaction with the polar parasitic connection, which is designed to be in contact with a gas stream for blowing this stream.

According to the invention, the surface 141 of the interaction is able to selectively retain polar spurious connections, not delaying analyzed hydrocarbons.

Thus, when the gas flow containing the analyzed hydrocarbons and polar parasitic compounds, is introduced into the compartment 133 through the back on the adcu 135, then circulates in this section 133 a flow rate of 20 cm3per minute up to 1000 cm3in a moment, in particular 50 cm3in a moment, more than 90 mol% of the analyzed hydrocarbons out again through the outlet nozzle 137, whereas less than 10% of the polar parasitic compounds exits through the nozzle 137 after a time equal to twice the time spent in the internal volume.

The surface interaction 141 has a polarity that is suitable to selectively retain polar spurious connections.

It is made of, for example, on the basis of silicon dioxide, on the basis of aluminum trioxide or on the basis of a copolymer of styrene with divinylbenzene (SDVB). In the case of silicon dioxide surface 141 is preferably based on natural or unsubstituted, silicon dioxide, having a covalent bond of Si-OH. Alternatively, the surface 141 is implemented on the basis of silicon dioxide filled with magnesium, type SiO3Mg (available in the market under the name of FLORISIL®).

In another embodiment, the surface 141 is made on the basis of silicon dioxide, modified electron-donating groups, such as groups bearing at least one functional group-C≡N, -OH, -NH2, -cyclohexyl, -other1, -NR2R3, -NH-R4-NH2, -NH-C6H4B(OH)2, -COOH, -SO3-R5+/sup> or-C6H4-SO3-R6+where R1-R4independently from each other mean alkili C1-C4and R5+and R6+mean cations of type H+or Na+. Thus, the surface 141 favorably includes groups such as-Si-(C1-C4-alkyl)-R, where R represents, for example, a group-C≡N (favorably unprotected), -OH, -NH2, -O-CH2- CH(OH)-CH2(OH), -other1, -NR2R3in particular, -N(CH2CH3)2, -NH-R4-NH2in particular-NH-(CH2)2-NH2, -NH-C6H4B(OH)2, -COOH, -SO3-R5+in particular,- SO3-Na+, -C6H4-SO3-R6+in particular, -C6H4-SO3-H+where R1-R4independently from each other mean alkili C1-C4and R5+and R6+are cations of type H+or Na+. Surface 141 can also be advantageous to include groups such as-Si-cyclohexyl.

Thus, the surface 141 is able to interact through dipole interactions or formation of hydrogen bonds with atoms of oxygen, nitrogen or sulfur present in the polar spurious connections.

Alternatively, the polar parasitic compounds interact for the odd forces van der Waals or electrostatic forces, ionic interactions.

It should be noted that this interaction is due to the simple circulation gas flow along a solid surface 141, without the use of liquid or gaseous solvent.

The first section 133 installed in series in the branch 109 using nozzles 135, 137. Thus, the surface interaction 141 is able to retain polar parasitic compounds present in the stream up to its saturation. In this case, with a branch 109 connects the second branch 133. Cartridges 131 are interchangeable and can be replaced by a simple dismantling, when all branches 133 a single cartridge 131 will be worked out.

Alternatively, the cartridge 131 contains a single branch 133.

Further, as an example with reference to figure 1 will be described a method of analysis according to the invention, carried out during the drilling of the well.

To conduct drilling drill bit 15 is driven ground unit 41. Drilling mud is introduced into the inner space 35 of the drilling Assembly 29 by means of injection 43. This solution is lowered to a drilling head 27 and is held in the drill pipe 13 through the drill bit 27. This solution is cooled and lubricated by the drilling tool 33. In addition, the solution collects solid cuttings resulting from drilling, and up through the annular space, the OTF is reduced between the drill 29 and the walls of the drill pipe 13, and then displays a drain pipe 25. Thus, the liquid containing slurry, forming a drilling fluid for analysis.

According to figure 2 and then start the peristaltic pump 61 to select continuous mode, a certain portion of the drilling fluid circulating in the pipe 25.

This fraction of the solution is conducted to the chamber 63 through the inlet line 65 and is inserted into the camera.

The drilling fluid is introduced into the chamber 63 through the inlet line 65, shimmers in the discharge line 67 by passing through the overflow 87. In addition, some of the extracted mud sojourning in siphon 93 of the discharge line 67, which prevents the gas inlet in the upper part 75 of the chamber 63 through the lower end 97 of the discharge line 67. The introduction of gas into the chamber 63 is, therefore, only through the inlet.

Mixer 79 is driven by a motor 81 and mixes the drilling fluid in the lower portion 73 of the chamber 63 to cause a continuous extraction of the gases contained in the mud, and the mixture extracted gas with the carrier gas entering through the discharge channel 99.

As indicated previously, the flow of the extracted gas is continuously collected at the outlet 101 under the action of the suction created by the pump 107. As indicated above, the flow of the extracted gas contains hydrocarbons, C1-Cnfor the analysis in the analyzer 55, p is ture of water and polar parasitic compounds, such as alcohols, simple or complex esters, these compounds arise from the composition of the drilling fluid present in the medium injection 43, or due to a chemical reaction between the compounds of components of the drilling fluid when it is circulated in the well.

Then the gas flow is conducted through the separator 103, to resolve existing water vapor by condensation. Then the gas stream flows through the flow control valve 105. In this case, the adjustable rate of flow of the gas stream circulating in line 54, is from 300 cm3/min to 2000 cm3/min

Then about 10% of the gas stream is drawn through the branch 109, and about 90% of the gas stream is output by the pump into the atmosphere.

Gas flow in the branch 109, then circulates through the cleaner 56. Then the gas flow is introduced through the nozzle 135 in the internal volume to circulate in contact with the surface interaction 141, located on a solid material.

Upon contact with the surface interaction 141 polar parasitic compounds as alcohols, simple or complex esters, are held in the dipole interactions, whereas the analyzed hydrocarbon, C1-Cnmove essentially freely.

Thus, the gas stream is continuously collected at the back of the nozzle 137 cf is DSTV cleaning 56, contains the analyzed hydrocarbon, C1-Cnbut does not contain polar parasitic compounds, the elution time which can be from the time of elution of the first analyzed hydrocarbon to the time of elution of the last analyzed hydrocarbon in the separation column 121.

Then the gas flow is introduced into the separation column 121 that allows you to selectively separate the hydrocarbon, C1-Cndepending on their time of elution in the column 121.

The presence of these hydrocarbons sequentially detected by the detector 123, as shown in figure 4, which illustrates the intensity registered by the detector, depending on the time of elution.

The first detected peak to the left in figure 4, corresponds to the hydrocarbon, C1the second peak corresponds to the hydrocarbon, C2the third peak - hydrocarbon, C3the fourth peak hydrocarbons iC4fifth peak hydrocarbons nC4the sixth peak hydrocarbons iC5and the seventh peak hydrocarbons nC5.

For comparison, when the gas flow is present above cleanup tool 56 in the branch 109, is introduced directly into the column 121, without passing through the cleaner 56, polar parasitic compounds present in the gas stream before this passage, have the time of elution, lying in the interval for the Les from the time of elution of the first analyzed hydrocarbon, namely, hydrocarbon, C1until the time of the elution of the last analyzed hydrocarbon, namely hydrocarbons nC5. Therefore, produces two spurious peak 151, 152, shown in figure 4 by the dotted line. These peaks cloaked peaks corresponding analyzed certain hydrocarbons, such as, for example, peaks corresponding respectively hydrocarbons iC5and nC5.

Thus, the application of the method according to the invention allows online measurement at the output of the extractor presence of hydrocarbon, C1-Cnin the gas stream extracted from the drilling mud, and quantify at least a hydrocarbon, C1-C5exactly, without measurement errors, caused by the presence of parasitic compounds of the type of alcohol, simple or complex ester.

In one embodiment, between the cleaner 56 and the column 121 is installed pre-separation column. This column pre-selection is able to selectively retain the hydrocarbon, Cmwith above 10 m, which are not entered in the column 121.

In the second analysis unit 159 according to the invention shown in figure 5, the cleaner 56 is formed as a column pre-separation 161 located at the entrance to the analyzer 55 between branch 109 and the separation column 121.

Column predvaritelnogo the separation is chosen to give not only the selective retention of hydrocarbons, Cmwith above 8 m, but also the selective retention of polar parasitic compounds with elution time in the separation column 121, the components from the time of elution of the first analyzed hydrocarbon and up to the time of elution of the last analyzed hydrocarbon.

For this pre-separation column 161 favorably filled polar gel, the bounding surface interaction 141. Column 161-filled polar gel has an index of "Chrompack" above 8, favorably not higher than 20, which is defined in the "Manuel de Chromatographie en Phase Gazeuse (Reference gas chromatography), 4th ed., 1995, s and 373, published under the direction of Jean Tranchant chez Masson.

This index Chrompack is defined as the sum of five McReynolds constants for benzene, 1-butanol, 2-pentanone, nitropropane and pyridine. The classification system of McReynolds based on the measurement of different factors hold for a number of 10 subjects substances (of which the first 5 are taken into account for the calculation of the coefficient Chrompack), measured at the same temperature from one side to the test phase in the column 161, and on the other hand on the squalane. The sum of the five constants gives coefficient Chrompack, which characterizes the polarity, and low coefficient Chrompack typical non-polar columns, and high coefficients is Chrompack typical for polar columns.

This column operates by election (compared to hydrocarbons) solubilize polar parasitic compounds in the gel, forming a column. This column contains, for example, the stationary phase is made on the basis of gel peg.

Thus, when the gas flow containing the analyzed hydrocarbons and polar parasitic compounds, is introduced into the pre-separation column 161, and then circulates in the column 161 with a speed of 5 cm3per minute to 200 cm3in a moment, more than 90 mol% of the analyzed again hydrocarbons out of the column 161, whereas less than 10% of the polar parasitic compounds emerge from the column 161 after a time equal to twice the residence time in the column 161.

Column pre-separation 161 is connected to the output of the separation column 121 and line purging 163 using the three-way valve, which allows you to selectively clear, after a predetermined time, part of the wires coming out of the pre-separation column 161.

The method of analysis undertaken in the second block 159 according to the invention differs from the method, conducted in the first block 19, so that the gas stream extracted from the drilling mud containing the analyzed hydrocarbons and polar spurious connections, before entering the column 121 passes through Colo is well pre-separation 161.

In this passage of essentially all of the hydrocarbon, C1-Cnwith n less than or equal to 10, a positive n is less than or equal to 8, pass freely, while essentially all of the hydrocarbon, Cm+with above 10 m and polar parasitic compounds that may have a retention time in the column 121, comparable to the residence time of the hydrocarbon, C1-Cnheld in the pre-separation column 161.

After a predetermined time, when all the hydrocarbons, C1-Cnwill be released from the column pre-separation 161 and will be included in the separation column 121, the output of the pre-separation column 161 is connected with the purge line 163 through the three-way valve to clear the column 161 and remove connections, which definitely were not arrested in this column.

Alternatively, the column pre-separation 161 comprises a solid coating that selectively interacts with the polar compounds to remove them through hydrogen bonding or dipole interactions.

In one embodiment, the pre-separation column 161-filled surface interaction 141 in solid form, formed of unmodified silicon dioxide, silicon dioxide, modified electron-donating groups, which are defined above, of silicon dioxide, the floor is built with magnesium; the aluminum trioxide or a copolymer of styrene with divinylbenzene.

In one embodiment, the extractor 53 formed by the hollow rod, immersed in the drilling fluid and having a porous wall forming the membrane for extraction of the gases contained in the drilling mud. A hollow rod connected to the analyzer 55 line of small length.

As described earlier, the cleanup tool 56 in this case, set between the extraction membrane and the separation column 121 analyzer 55.

1. The method of analyzing a range of hydrocarbons contained in the drilling fluid, comprising the following steps:
extraction of the gases contained in the solution in the extractor (53) for continuous receipt at the outlet (71) of the extractor (53) flow extracted gases containing the analyzed hydrocarbons and at least one parasitic connection, non-water and more polar than the analyzed hydrocarbons;
- transfer gas stream in line migration (54)connected to the outlet (71) of the extractor (53);
- conducting the gas stream in the separation column (121)connected to the line transfer (54), for the Department analyzed hydrocarbons according to their elution time in the separation column (121);
sequential detection and/or determination of the amount of each of the analyzed hydrocarbon detector (123), loc is about place location at the outlet of the separation column (121);
moreover, one or each of the parasitic connection can have the elution time in the separation column (121) in the interval from the values of the elution time in the separation column (121) first analyzed hydrocarbon to the value of elution time in the separation column (121) last analyzed hydrocarbon,
characterized in that the method comprises the step of conducting the gas flow through the surface (141) chemical and/or physical interaction with the parasitic coupling, and surface interactions (141) is in contact with the gases between the output of the extractor (53) and the entrance of the separating column (121), for the selective retention of the specified one or each of the parasitic connection without delays analyzed hydrocarbons, in order to prevent the leaching of this one or of each of the parasitic compounds in the separation column (121) in the period between the time of elution of the first analyzed hydrocarbon and the elution time of the last analyzed hydrocarbon.

2. The method according to claim 1, characterized in that the surface interaction (141) capable of interacting with one or each parasite connection mechanism of formation of hydrogen bonds, dipole interactions or ion exchange to selectively retain one or each paranitroaniline, not holding none of the analyzed hydrocarbon.

3. The method according to one of claims 1 or 2, characterized in that the passage of the gas flow through the surface interaction (141) more than 90 mol.% each polar parasitic compounds retained on the contact surface (141), and on the contact surface (141) is kept less than 10 mol.% analyzed hydrocarbons.

4. The method according to one of claims 1 or 2, characterized in that the surface interaction (141) contains unmodified silicon dioxide, silicon dioxide, modified electron-donating groups, silicon dioxide, filled with magnesium, aluminum trioxide or a copolymer of styrene with divinylbenzene.

5. The method according to one of claims 1 or 2, characterized in that the surface interaction (141) is removable cartridge (131)mounted in-line transfer (54) between the outlet (71) of the extractor (53) and a separation column (121).

6. The method according to one of claims 1 or 2, characterized in that the surface interaction (141) is in the pre-separation column (161)above the separation column (121).

7. The method according to claim 6, characterized in that the surface interaction (141) contains polyethylene glycol.

8. The method according to claim 6, characterized in that the pre-separation column has a coefficient Chrompack above 8.

9. The method is about 7, wherein the pre-separation column has a coefficient Chrompack above 20.

10. The method according to any one of claims 1, 2 and 7-9, characterized in that the analyzed hydrocarbons include hydrocarbons, C1-Cnwhere n is less than or equal to 10, a positive n is less than or equal to 8.

11. The method according to any one of claims 1, 2 and 7-9, characterized in that one or each polar parasitic compound contains at least one oxygen atom, nitrogen atom or sulfur atom.

12. Unit (19; 159) for analysis of total hydrocarbons contained in the drilling fluid, including:
- extractor (53) gases contained in the solution, and the extractor (53) has quit (71) extraction of gas, to continuously obtain at the outlet (71) of the flow of extracted gases containing the analyzed hydrocarbons and at least one parasitic compound, other than water and more polar than the analyzed hydrocarbons;
line (54) transfer gas flow connected to the outlet (71) of the extractor (53);
- the analyzer (55), containing:
separating column (121)connected to the line transfer (54), for the Department analyzed hydrocarbons according to their elution time in the separation column (121);
detector (123), located at the outlet of the separation column (121), for successive detection and/or quantitative definition the population of each of the analyzed hydrocarbon;
moreover, the parasitic connection can have the elution time in the separation column (121)of elution time in the separation column (121) first analyzed hydrocarbon and before the elution time in the separation column (121) last analyzed hydrocarbon,
wherein the analytical unit (19; 159) contains the surface (141) chemical and/or physical interaction with the parasitic coupling, and surface interactions (141) is in contact with the gases between the outlet (71) of the extractor (53) and the inlet of the separation column (121), for the selective retention of one or each of the parasitic connection without delays analyzed hydrocarbons, in order to prevent the elution of one or each of spurious connections in the separation column (121) in the period between the time of elution of the first analyzed hydrocarbon and the elution time of the last analyzed hydrocarbon.

13. Unit (19) for item 12, characterized in that it contains a removable cartridge (131)containing surface interaction (141), and a removable cartridge (131) are installed in series on the line transfer (54) above the separation column (121).

14. Block (159) in item 12, characterized in that it contains a column (161) pre-separation with surface interaction (141),and pre-separation column (161) installed in series on the line transfer (54) or behind the line of migration (54), above the separating column (122).



 

Same patents:

FIELD: chemistry.

SUBSTANCE: invention refers to drinking, natural and waste water, precipitation sanitary-hygienic control and analysis for phenol content. Method includes chemical phenol modification in 2,4,6-tribromphenol, extraction concentration of 2,4,6- tribromphenol and gas chromatography testing. Herewith chemical modification is preceded with humic acid removal on aluminium oxide from aqueous medium sample with copper sulphate in amount 0.05-0.25% of aqueous medium sample weight.

EFFECT: higher analysis reliability.

7 ex, 2 tbl, 7 dwg

FIELD: silicon compounds technology.

SUBSTANCE: tetrafluorosilane production process comprises following stages: (1) hexafluorosilicate heating; (2-1) reaction of tetrafluorosilane gas containing hexafluorodisiloxane formed in stage (1) with fluorine gas; (2-2) reaction of tetrafluorosilane gas containing hexafluorodisiloxane formed in stage (1) with fluorine-polyvalent metal compound; (2-3) reaction of tetrafluorosilane gas obtained in stage (2-1) with fluorine-polyvalent metal compound. Finally, high-purity tetrafluorosilane with 0.1 ppm by volume of hexafluorodisiloxane is obtained, which is applicable in manufacture of optical fiber, semiconductors, and sun battery elements.

EFFECT: reduced content of impurities in product.

24 cl, 1 dwg, 1 tbl, 9 ex

FIELD: chemistry.

SUBSTANCE: method of determining noble metals involves drying a sample with grain size 1 mm to constant weight at temperature 105-110°C and using the dried sample for second and subsequent one-off determination of noble metals. An undried sample is used during the first one-off determination, wherein sample material is mixed with a charge mixture, the obtained mixture is molten and the amount of noble metals in the melt is determined. The sample is dried during the first determination and the weight ratio of moisture in the sample is determined. Content of noble metals in the sample is determined using the formula: where Cme is content of noble metals in the sample, g/t, Mme is mass of the noble metal detected in the melt, mg, m1 is the mass of the sample material used in the first determination, g, W is the weight ratio of moisture in the sample.

EFFECT: invention increases rapidness of determining noble metals and labour efficiency.

1 ex

FIELD: medicine.

SUBSTANCE: invention refers to medicine, particularly to oncology. Diagnosis of a malignant growth requires conducting cytological preparation analysis by atomic force microscopy (AFM). The AFM involves measuring vertical dimensions of cell elements and regulating these dimensions. The characteristic functions of the regulated dimensions of the measured cell elements are evaluated. An affinity criterion of the evaluated characteristic functions to their reference values specified in accordance with any given disease, including malignancies is used to diagnose or exclude a malignant growth.

EFFECT: method provides higher diagnostic reliability in the malignant growth ensured by objectification of cytological data, higher measurement accuracy and reproducibility.

2 dwg, 1 ex

FIELD: physics.

SUBSTANCE: device is fitted with a recording unit which is combined with a block of seismic detectors with coverage of a zone of possible seismic activity, and communication apparatus for direct communication with a central recording unit. Data medium in the recording unit and/or master controller stores location parameters of the block of seismic detectors, wherein the location parameters of the seismic detectors can be corrected. Recorded information can be transmitted to the central recording unit by manual retrieval of the detachable data medium from each recording unit, by wireless information transmission or by copying information from each recording unit through an inductive or cable connector and a transmitting device.

EFFECT: possibility of varying distance between seismic detectors.

17 cl, 12 dwg

FIELD: process engineering.

SUBSTANCE: proposed method uses, at least, two powder specimen holders with through channel having first opening for powder to be introduced therein and second opening for powder to be discharged therefrom. Powder specimen are fed into appropriate holders to align holder second opening with appropriate opening of specimen receiver. Note here that powder flows simultaneously through second openings in mixing powders to facilitate their flow from channels into appropriate receivers. Additionally, proposed method comprises pulling elastic film on every hole and locking it relative to appropriate holder to seal its second hole as well as film perforation to seal every second opening during powder flow through second openings.

EFFECT: higher accuracy of dispensing.

22 cl, 7 dwg

FIELD: process engineering.

SUBSTANCE: proposed method uses, at least, two powder specimen holders with through channel having first opening for powder to be introduced therein and second opening for powder to be discharged therefrom. Powder specimen are fed into appropriate holders to align holder second opening with appropriate opening of specimen receiver. Note here that powder flows simultaneously through second openings in mixing powders to facilitate their flow from channels into appropriate receivers. Additionally, proposed method comprises pulling elastic film on every hole and locking it relative to appropriate holder to seal its second hole as well as film perforation to seal every second opening during powder flow through second openings.

EFFECT: higher accuracy of dispensing.

22 cl, 7 dwg

Sampling device // 2449086

FIELD: construction, road engineering.

SUBSTANCE: invention relates to construction and may be used to monitor and investigate a core sample from wells and structures. The sampling device comprises a sampler, where one end of a rope is fixed, and the other end is fixed on the sampler. At the same time a device of sampler retention is made of a torus, which is covered on top with an adhered industrial rubber fabric, which serves as a roof. The surface of the torus and roof forms a tight cavity, where vacuum is pulled as the torus is blown. Atmospheric pressure pushes the shell and the cover and presses it to road surface. When the sampler is pressed into the earth bed, it stops against the rope connected to the sampler retention device.

EFFECT: sampler retention on the road surface.

2 dwg

FIELD: metallurgy.

SUBSTANCE: invention refers to investigation of structure of high-strength steels. Method involves interaction of tube steel specimen with water solution of sulphosalts, further flushing and drying of specimen and detection of areas of bainite of rack morphology by means of optic microscope. At that, after application to specimen surface of water solution of sulphosalts, there removed is formed film, and bainitic areas are detected by means of polarised light of optic microscope; after that, obtained pictures of specimen are fixed and parameters of the detected bainitic areas of rack morphology are determined.

EFFECT: method allows detecting structure of high-strength tube steel as a result of evaluation of which the conclusion can be made on metallurgical quality of tube steel.

4 dwg

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture and, in particular, to determine the loss of ripe grains from auto-falling growing. The method consists in the fact that the area of the field is chosen, a frame is put on it passing through the density, the grain falling from the spike and got into intra-frame space is harvested. At that before the observations, the inter-stem space between the soil surface and the upper edges of the frame is filled with free-flowing material, which upper layer is moistened and covered with a thin layer of fast-curing material, and the area around the frame is mowed at least for the length of the density. In addition, another frame of the same area with sides of greater heights is put on this frame.

EFFECT: method enables to increase accuracy of determination of grain loss.

2 cl, 2 dwg, 1 ex

FIELD: medicine.

SUBSTANCE: paraffin sections are prepared, fixed, coated with a colloidal developer prepared by mixing 2% aqueous gelatin in 1% formic acid and 50% aqueous AgNO3 in equal proportions, incubated for 30-60 minutes, washed and contrasted. The material is fixed in 10% neutral buffered formalin (pH 7.4) for 24 hours. The material is finished in ascending alcohols, encapsulated in paraffin to prepare the sections which are prepared in 2% formic acid in 96% ethanol for 20 minutes, dehydrated in 2 portions of 96%; the sections are prepared in 0.1% NaOH for 2 min 30 sec. Then they are dried. One drop of 100% AgNO3 is layered on the preparation. It is followed by incubation in a thermostat at 60°C for 1 min 40 sec in a humid chamber, and coating with one drop of 40% formaldehyde and colloidal developer. It is incubated for 20-50 seconds in the thermostat at the same temperature. The sections are washed in 4 portions of distilled water. The sections are processed with acetate buffer pH 2.4 for 1 minute; the preparations are contrasted with 0.2% aqueous methyl green for 10-15 seconds, purified in chloroform, differentiated for 2-3 minutes in n-butyl alcohol, processed in toluene and encapsulated in polystyrene.

EFFECT: higher quality of detection and evaluation of nucleolar organisers.

1 ex, 2 dwg

FIELD: medicine.

SUBSTANCE: method for in vitro recovery of experimental tuberculous granulomas in culture involves induction of granulomatous inflammation by infecting experimental animals with BCG mycobacteria, recovery and mechanical disintegration of spleen tissues containing granulomas over a period adequate to form them in an animal's body, homogenisation of spleen tissue in a solution by agitation, purification of the homogenate from coarse tissue fragments by spontaneous deposition in a culture medium, removal of the deposits, recovery of the granulomas from a supernatant, washing in a new portion of the culture medium by centrifugation at acceleration 15-28 g at least three times and transfer of the deposited granuloma in the culture medium.

EFFECT: effective granuloma integrity and higher purity of the recovered granulomas.

4 cl, 3 ex

FIELD: oil and gas production.

SUBSTANCE: procedure consists in digging foundation pit in soil and in hydro-insulation of its cavity. Also, here there is used processing waste of drilling in form of mixture of spent process solution with cuttings - slime. Preliminary, waste is mixed with sand till obtaining uniform mass, at ratio: sand 50-80%, spent drill agent with slime 20-50%. Further, solid phase is mixed with sand to a condition of a soft clay and produced mixture is cured during 10-15 hours. Successively, cured mixture is transported to a prepared from sand foundation pit-sump of gas-flare (sump of GF). A bottom and internal slopes of sump of GF surface are lined with this mixture at height of at least 0.5 m. The cavity of the GF sump is hydro-isolated. Its strengthened structure is formed through process specified gas-hydro-dynamic analysis of a well followed with combustion of gas flare, by means of which the constructed bottom and internal slopes of GF sump surface are thermally burned in a flare flame.

EFFECT: reduced prime cost and increased reliability of ecological safety of environment.

4 cl

FIELD: oil and gas production.

SUBSTANCE: device for drilling agent degassing consists of degassing chamber, of its cover, of float and of aerator. The degassing chamber is made as vertically elongated structure and consists of two coaxial vertically oriented pipes of different diameters: an upper one - of bigger diameter and a lower one - of smaller diameter. On a lower end of the lower pipe there is present non-uniformity in shape of meander around circumference in section of the end part of the lower pipe. The aerator is positioned inside the lower pipe from the lower end and has diameter less, than diameter of the lower pipe. The cover of the degassing chamber has four ports for release of excess pressure, for sampling of analysed product, for connection with an inlet of a compressor and for connection to the channel for the aerator.

EFFECT: reduced weight and dimension at reduced cost and expanded functionality of implementation under various conditions including reservoirs of drilling rigs of low capacity.

3 cl, 1 dwg

FIELD: gas-and-oil producing industry.

SUBSTANCE: here is disclosed procedure of reagent capsulation of consolidated material with utilised drilling waste. According to the invention as consolidating material there is used mixture of reagent of capsulation and large-tonnage waste of cement industry in form of cement powder at the following ratio of components, wt %: reagent of capsulation 20-30, cement powder 15-30, drilling waste - the rest.

EFFECT: raised efficiency of utilisation of drilling waste at simultaneous saving labour and material expenditures, also utilisation of local large-tonnage industrial powder-like waste of other branches of industry and simultaneous utilisation of oil slime at drilling oil wells.

4 cl, 5 tbl

FIELD: machine building.

SUBSTANCE: mechanical blade mixer consists of frame, of drive, of shaft, of main blade unit travelling axially relative to shaft and of intermediate fixed blade unit; both blades are mounted on shaft and receiving torque from it. The drive consists of an electric engine, of a worm reducer and of a flexible coupling between them. By means of a flange connection the shaft is coupled with the reducer and transfers torque via a key connection to the main movable blade unit spring loaded relative to a stop attached to the shaft; while the intermediate fixed unit is located between the flange connection and the main movable blade unit.

EFFECT: reliable qualitative mixing sediment with drilling agent and good repair ability.

1 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to oil-and-gas industry and can be used to control drive system of vibrosieves with elliptical trajectory of frame oscillations, the frame being made up of two unbalanced exciters. Proposed method comprises varying phase shift between misbalance turn angles be affecting unbalanced exciter motors. Revolution cycle of first unbalanced exciter and time interval wherein exciters pass identical positions are constantly measured. Then phase shift between turn angle is calculated by mathematical relation. Thereafter, difference between obtained value and vibrosieves design rating is determined to vary acting voltage fed to one of motors of exciters so that said difference reduces to zero. If sign of obtained difference corresponds to that of rotation of the first exciter, then voltage fed to its motor is reduced. If sings do not match, voltage fed to motor of the second exciter is reduced. Further, control is performed by varying fed voltage to motors. If changed voltage reaches main voltage, then another motor actual voltage is decreased.

EFFECT: higher efficiency and capacity.

7 dwg

FIELD: oil-and-gas industry.

SUBSTANCE: equip vehicle exhaust gas system with turbo compressor, which by use of a thermally insulated air duct, connected with aerate device via a valve. The aerate device air duct top point located higher than a liquid tank top point. The aerate device at the same time acts as a heat exchange pipe for preparing reagent mixtures, and executed as a coil with holes for air discharge.

EFFECT: creation of easy designed mixing plant, which provides heating and producing of more homogeneous reagent mixture during the smaller time period, due to heated air barbotage with the turbo compressor.

1 cl, 2 dwg

FIELD: oil-ang gas production.

SUBSTANCE: vibration screen nets specific though capacity estimation method according to boring solution, characterised with that vibration screen installs into measurement cell as a truncated cone with the net sample on its smaller base, measure the boring solution density, start the vibration screen, supply the boring solution defined volume into measurement cell, continuously measure screened solution mass and define the mass derivative vs time. After the screening process ends measure boring solution layer height on the net with formula where m(t) - solution screened mass current amount, kg; mk - solution mass after screening, kg; ρ - boring solution density, d - cones smaller base diametre, m; α - measurement cell cone angle, define net's instant through capacity with formula q(t)=1/S·ρ·dm(t)/dt, where S - net sample area, m2; and define screen net specific though capacity dependently on the boring solution layer on the net.

EFFECT: efficiency increase in boring solution refinery.

5 dwg

FIELD: oil-and-gas production.

SUBSTANCE: invention related to oil-and-gas production can be used during wells boring for cleaning liquid purification. Equipment includes primary and fine purification units, pump for liquid supply into units, tanks for sludge and liquid collection. Primary purification unit includes two pipe one inside of another. External pipe inclined in 30°. Top right part of external pipe has a nozzle with possibility of tangential solution supply to the internal pipe. Along external pipe executed inside hole covered with net, for fine dispersed liquid passing by and tank for it collection. In inside pipe of smaller diametre installed a screw auger for taking out sludge form pipes bottom end and its withdrawal into bunker. Fine purification unit include big diametre inclined at the same angle as the external primary purification pipe, installed in it at one end second pipe of a smaller diametre and smaller dimension for purified liquid withdrawal into tank, located at first pipe bottom nozzle, installed on tangential in correspondence to the second pipe fitting for solution supply. On the part of the first pipe there is a short square thread with possibility hard particles withdrawal out of overall flow to the auger.

EFFECT: cleaning liquid purification quality increase, secure equipment operation.

5 dwg

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