Method of providing of representative sample sampling of fluid (versions)

FIELD: oil and gas industry.

SUBSTANCE: for this method, containing method of sample sampling of fluid in point of sampling, analysis of physical and chemical properties of fluid sample in sampling point, recordings of sample properties in point of sampling into archive of electronic data base, analysis of physical and chemical properties of sample of fluid in place remote from point of sampling, recording of sample properties in remote place into archive, checking of fluid sample fitness be means of comparison of properties in point of sampling and sample properties in remote place and recording of properties of checked for fitness of sample into archive.

EFFECT: providing of method of reliable and qualitative sample of fluid and improvement of data quality, controllability and conformity of data about fluids parametres.

32 cl, 4 dwg

 

The technical field

The present invention relates to the determination of the parameters of fluids and, in particular, to the chain of preservation fluids to improve data quality, manageability and consistency of data.

Prior art

The term "protected stream" is used to describe a wide range of issues related to reliability and availability of oil and gas production. Protection technology flow consists of two operations - operations planning and operations control. Operation design begins with a phase of exploration and evaluation and ends with the start of the system. The operation control begins with the first extraction and lasts the entire lifetime of the field. Operations control is a feedback loop used to monitor and optimize the performance of the production system.

Samples of fluids from hydrocarbon productive formations (reservoirs) are important for determining the quality of the produced fluids. Numerous decisions on the development of the field, such as strategy, production and design of installations for the extraction of fluids, depend on the properties of fluids in samples from exploration wells. It is important to have information about the original fluids in productive strata. Samples of fluids in the later stages of operation of the collector is required to assess the status of fluidnow a particular time or after doing some mining operations, however, the comparison is always true for the properties of the original fluids. Thus, it is important to collect high-quality, representative illustrative, typical samples of fluids and to manage this data.

Summary of the invention

The present invention is to provide a method that provides a selection of reliable and representative sample of the fluid. The invention is described as applied to fluids in productive strata and characteristics of the reservoir, however, it should be understood that the invention is applicable to any sample fluid, for example for medical purposes.

The problem is solved by creating a method of selecting a representative sample of the fluid, which is that a sample is taken of the fluid at the point of selection, which can be placed in the borehole (depth of the layer), the wellhead or above ground or underground mining installation, analyze the physical and chemical properties of the sample fluid at the point of selection, write down the properties of the sample at the point of selection in the electronic archive database, analyze the physical and chemical properties of the sample fluid at a location remote from the point of sampling, recording properties of the sample in a remote location in the archive, check the suitability of the sample fluid by comparing the properties sample point selection and properties of a sample in a remote IU the ones including reproduction methods downhole measurements in a remote location, and record properties of the tested sample in the archive.

The suitability of the sample fluid means that the selected physical and chemical properties analyzed at the point of selection, coincide in a pre-selected range of acceptable differences with the properties of the sample analyzed in a remote location, it is preferable to use the same physical and chemical methods. However, in some cases, the properties of the sample at the point of selection may not match the properties of the sample in a remote location in a selected range of tolerances, in this case, the properties of the sample tested for suitability include the identification of differences in the results in the archive. Analyzed properties include properties that are measured or obtained by testing. It should be noted that the properties of the sample tested for suitability, and may include the results of the analysis, which were obtained in a remote location and not at the point of selection.

Brief description of drawings

The above and other features and aspects of the present invention will be explained in the following detailed description of a particular variant of the invention, with reference to the accompanying drawings, on which:

figure 1 depicts the scheme members is Telenesti operations known protection process flow;

2 is a diagram of the sequence of the design process protection process flow according to the invention;

figure 3 diagram of the sequence control process protection process flow according to the invention;

4 is a logical block diagram of the sequence of operations of determining the chain of preservation fluids according to the invention.

A detailed description of the preferred embodiment variants of the invention

Protection of the stream is an important issue that should be solved in advance in the process of designing systems for the extraction of fluids and which are vital for the offshore production system. 1 shows a diagram of a sequence of operations known typical protection process flow, generally designated position 10. The process 10 (1) of thread safety in General 11 illustrates the process of design, which includes a stage 12 sampling stage 14 analysis, stage 16 modeling and stage 18 design and process 20 control.

The process begins with a phase of exploration and evaluation, to which measured data of fluid properties in natural occurrence and samples of the selected fluids are retrieved for more detailed analysis. Case studies related to the protection of the stream can be performed on samples of fluids in the laboratory. The amount and type of these analyses depends on the expected PR the problems. Then laboratory data used in the design of software tools to simulate different scenarios for system production. This process allows you to identify each system and fits it management strategy for protection of the stream.

Once selected, the system is designed and installed, security management flow should be monitored and optimized process control. Considering the fact that the initial development of these strategies is conservative, there are good opportunities for process optimization. However, the high cost of failure requires a thorough monitoring system to identify potential problems before they lead to catastrophic failure. In the process control system data, such as temperature, pressure and costs are obtained from sensors at various points. Models that use the properties of the fluid obtained at the development phase, adapted to the measured data of the system. These models can now be used to determine the current system state and system optimization through a series of runs.

Sequence design and control should smoothly be integrated with each other and be consistent. The same data sets and models that were used to develop the system, should notused for monitoring and optimization. Below will be described in more detail each element of the process.

Figure 2 presents the scheme of the sequence 11 of the design process according to the invention. The selection of the 12 samples is the first step in the process 11 design.

The results of measurements of thread safety has led to the need to have new information on representative samples. The goal of any sampling procedure is to deliver to the laboratory sample, identical in composition to the fluid in the reservoir. Unfortunately, many solids that cause problems with protection of stream comes in the form of precipitate from solution in the selection process of the sample in the same way as it occurs in the production system. Changes in pressure and temperature can cause phase transitions, leading to change of composition of the samples. The introduction of contamination during sampling may also lead to changes in fluid composition. The most common source of contamination is drilling mud.

The ideal sample should be collected without contamination of the reservoir at constant temperature and pressure and transferred to the laboratory intact while maintaining temperature and pressure. The changes associated with phase transitions, transfers or pollution, are excluded. In practice, currently this is not possible. Bol is e really help reduce the possibility of phase transitions by compensation of pressure and temperature.

You can record data, for example, but not exclusively, date of sampling, the sequence number of the vessel, the sample number, the log file, the depth of the sample selection, method of sample selection and configuration tool, the pressure in the reservoir, the temperature and pressure of the sample at the time of placing it in the vessel, the composition of the sample fluid, gas factor (GF), pollution level, density, viscosity, concentration of H2S, the saturation pressure, the pH of the water and spectroscopic snapshot of the sample (in the visible and near infrared, fluorescence, reflectance). These data can be saved in the system 22 data management. System 22 data management can be an electronic system or software.

At step 14 the analysis measured the desired properties of fluid relating to the provision of a thread. Analysis of the fluid can be produced in the well, in the field and/or in the laboratory. A list of the required properties of the fluid depends on the type of fluid and the expected operating conditions of the system. Usually apply a phased approach to the development of program analysis. First make processing of the sample and check its suitability. This usually determine the composition and main properties of the fluid. After identification of sufficient quality samples produce a security check of the stream.

Illustrated Prov the RCTs on paraffin, asphalt and hydrate. For paraffin in degassed oil produce the following dimensions: the normal distribution paraffin using high temperature gas chromatography (VTHH), temperature of formation of paraffin, viscosity and pour point of the oil. If these parameters indicate the possibility of deposition of paraffin, problems with high viscosity or thickening, of the program is needed more thorough analysis, including measurements to be made in the pipeline carbonated oil and chemical evaluation.

For asphaltenes data describing degassed oil, which includes the end point of titration ANAS (asphalt saturated aromatic resins and paraffin solution (typically n-pentane and n-heptane), are used as benchmarks stability of fluids. Because the means of verification and simulation for asphaltene developed not as good as paraffin, usually measured pressure deposition of at least one asphaltene in aerated oil. If a problem is detected with asphaltenes conduct additional studies, which are reduced to the compilation phase diagram asphaltene as a function of temperature and for evaluating effectiveness of chemicals or coatings as a preventative strategies (prevention of deposition).

For gazoo the different hydrates the composition of the standard PVT or research on the applicability and the composition of the water used in thermodynamic model for the formation of the expected boundaries of hydrate formation. If the data structure is the exclusive or of the conditions of temperature and pressure are outside the range of the suitability of the model, it is possible to perform a direct measurement of the formation of hydrate. If there is a potential problem, to evaluate the effectiveness of thermodynamic inhibitors and/or inhibitors low dosage (IND) models are used in combination with the experimental data.

The area of measurement for the protection of the stream is constantly developing area of technology in which regularly new technologies. This leads to the positive and negative consequences. The positive side is that the possibility of measuring and interpreting changes in the behaviour of the fluid is constantly increasing. It provides advanced design, which optimizes performance and reduces the risk of thread safety. However, the dynamic nature of the measurement technology has led to the lack of standardization and inconsistencies between measurements and simulation.

On stage control 22 data all the data for the sampling and analysis of fluids are stored in a Central database, for example in the system based on the Internet. The database can contain logs, sampling, information transfer and transportation and all measurements of fluid properties, produced in the UK is the azhina, in the field and in the laboratory. Database management involves several functions: data management services data management for clients; a delivery system based on the Internet for client data and reports; the ability to monitor the quality of the sample by simple comparison of multiple measurements during sampling, processing and analysis and by tracking the history of the samples (it service chain security); transfer data directly in the model of fluid properties.

On stage 16 of the simulation can be formed model of fluid properties and process models. Model properties of fluids include, but not limited to, thermodynamic models, models of deposition and models of multiphase flow. Models of fluid properties are the connection between the analytical data of fluids and engineering application. All these models use measured data available in the database properties of fluids. For thermodynamic models the experimental data of fluid properties and phase behavior are loaded in thermodynamic package. Equation of state parameters are transformed in accordance with the measured values. The model parameters can then be saved in the database together with the properties of the fluids used to generate them. Models of deposition and models megafan the th stream directly use the data of fluid properties in the database. It is important to remember that models should be developed using the same type of experimental data that is stored in the database. This means that the type and quality of the sample and the technique and analysis procedures should be consistent with data used for model development. This is ensured in the process of data management and unified approach according to the present invention.

Models of fluid properties implemented in engineering packages industrial standards. The packages used for the design of production systems, include, but are not limited to: modeling tools productive layer (collector); modeling of the wellbore; means modeling pipeline from the oil wells and modeling tools process or facility. It was made many attempts to include the same set of models of fluid properties in the modeling tools of different types. Thus, the fluid properties will be modeled consistently in different parts of the production system.

On stage 18 of the design models are used in the stages of engineering development to submission and, upon application to select the type of system production and development of the operating procedures. At this stage developed a strategy for the prevention and fixes for common issues of thread safety. Part of the research mo is et to include procedures for starting and stopping. In the phase of detailed design models can be reviewed and modified to reflect the final design of the system.

Figure 3 depicts the workflow process 20 control security thread according to the present invention. The control process 20 begins with the first extraction and lasts the entire life of the field. Initially, it relies on data and models used in the design process 11. These models and data can be changed over time to reflect changes in the system or fluids.

Data are obtained from two sources 26. The sensors 24 in the system measured performance data system (dynamically-operational data). These measurements can be performed in real time or periodically. Currently, there are various sensors 24 that are important for monitoring the protection of the stream. Options include discrete pressure points, discrete and distributed temperature, phase and cost of discharge of chemicals. These measurements are stored in the collection system 28 data.

The second data source is the data of the fluid properties and protection flow (static data), collected prior to stage 11 design and supported in the storage 22 of the static data. As in sequence 11 operations design, Dan is haunted properties of the fluid in the storage 22 of the static data must be complete and consistent with models used for control. This suggests that long before the system installation should be considered as a strategy for protection of the stream will be monitored 30 and optimized 32. It is important to get all necessary data during drilling and in order to obtain representative samples. When the system is production, is much more difficult and expensive to collect high quality samples of thread safety in the underwater area.

If the fluid composition changes over time, the static data of the fluid properties may be updated periodically. The composition may change as exhaustion. For example, when gas condensate falls below the saturation pressure, condensate output and temperature of formation of paraffin can fall. The accumulation sorted by composition composition may vary during production of fluids from areas remote from the starting point of sampling. New fields or areas included in the existing system of production, can also modify the properties of the fluid in the system. A set of data on fluid properties must be updated to reflect these changes.

The same engineering model 18, which was used when designing the system, are used to interpret the performance of the system. The model must be consistent with measured data. The less data available is but the system the less restrictions for approval or finishing, which increases the uncertainty associated with the non-unique nature of the agreed model.

Consider the following simple example. Temperature at the inlet and outlet sections of the pipeline from the oil wells flow differ from those predicted by the model. Evenly whether different heat transfer coefficient U in the whole entire length of the pipe from the expected value, or there is a shorter section of the pipeline from the oil wells, where broken insulation, but in other places the expected value of U is correct? This may be important for the deposition of paraffin. If the heat transfer coefficient is much higher for a short section of the pipeline in this area, the wall temperature will be much lower, which will lead to an increase in the rate of deposition of paraffin. Distributed temperature measurement (temperature every few meters along the pipeline would give more detailed information and would exclude or confirm this possibility. Therefore, additional resolution temperature data provides a consistent model with less uncertainty.

Figure 4 shows a logical block diagram of the operational sequence of the chain of preservation fluids according to this is the overarching invention. Under the “chain of security” means the process in which selected samples of the fluid and measure its properties, to obtain valuable information for the development of the productive layer (collector). The process includes monitoring measurements of fluid properties at different stages between and during collection of samples and laboratory analysis. In particular, the purpose of the invention is to associate the test results in the well, under water, at the location of the wells in ground installation and in the laboratory into a single data management system and to facilitate quality control and quality assurance.

The way the “chain of security” fluids begin with a selection of 34 sample fluid. The sample fluid can be obtained at the depth of the productive formation (in the well), at the wellhead or separator. Provide measurements 36 in natural occurrence selected physical and chemical properties of the sample fluid. After the sample is collected and analyzed at the point of selection, create the archive 38 in a database of electronic access that contains the page chain security, display measurements in the borehole (summary and graphical representation) with reference to the log files, the mapping scheme petrophysical logs indicating the location of the sample in the reservoir, and page quality. Validation and analysis of the 40 sample in place is aspolozhena wells is carried out on the surface, including the state of the productive formation (container) and the pressure in the reservoir (container) when uncapping. The measurement methods used at the point of selection, repeated at this stage, in order to detect any anomaly in the measurements with reduced uncertainty. Measurements and analysis at the location of the wells are entered and documented in the archive 42 database samples. If the observed anomalies between measurements of the sample fluid (natural occurrence) and the measurement of the sample fluid at the location of the wells, the process can start again 44. Then tested for suitability sample fluid transferred to the laboratory and analyzed 46. Basic tests again, and also can produce special studies. Although measurement of fluid properties at the point of selection can be different physical methods for borehole samples of the same procedures that were used in the environment of the borehole, again at the location of the wells and/or in the laboratory to evaluate the quality of the sample, downhole tools and procedures for the selection and processing of the sample. All collected data in the archive samples in the database for comparison and verification of the suitability of stage 48. Any discrepancies and anomalies can be noted in the archive for use in the modeling of thread safety. At each stage n is ocess check the fingerprint of the sample.

Below the method according to the present invention are described in more detail. The database facilitates the monitoring procedures to ensure the quality of the information received. Measurement of fluid properties at different stages are shown in the system of Internet-based tracking quality and analysis of samples. Also define procedures for handling conflicting measurements and studies of the causes of the discrepancies. These regulations are used as the basis for assessments and inspections procedures chain of preservation fluids to certify samples of fluids and measurement and more confident to choose the values of fluid properties for the study of the productive layer (collector).

To obtain sample(s) of fluid, you can use numerous methods. Modular dynamics tester bed (MTD) from Schlumberger widely used for sampling fluid in the well and after the recent improvements analyzes fluid on the basis of optical spectroscopy methods that allow us to recognize the characteristics of the fluid, which may affect the selection of high-quality samples. The advantage of the analysis of fluids in the well is that the fluid is measured in conditions close to the conditions of the reservoir, i.e. the initial state of the fluid is minimally disturbed. In addition, the scanning properties f is wide at different depths in the geological formation to the selection of the sample, it is useful to determine the optimal depth of sampling.

In addition to absorption spectroscopy it is possible to use other physical methods for measuring properties of fluids in the environment of the borehole, such as viscosity and density, using Electromechanical systems, detection of dew with fluorescent spectroscope, pressure boiling point with sensors, gas detection using light reflection, measuring pH with chemicals and resistance.

During or immediately after sampling data feeds tool for sampling in the pipeline process to get registered and analyzed for physical and chemical properties of the sample fluid at the point of selection, for example, but not limited to, basic information - date, the sequence number of the vessel, the number of the sample, the name of the log file, depth, and configuration tool for sampling the pressure in the reservoir, the maximum recorded temperature or the temperature of the formation, type of drilling fluid, type of sample, type of vessel, time of the sealing of the vessel, the volume of the sample, the minimum pressure in the selection of the sample, the minimum temperature in the selection of the sample; the composition of the sample weight % CO2C1C2-5C6+H2S, gas factor (GF), the fraction of water in the vessel and practical density of hydrocarbons; fluid properties of viscosity, density, pressure that is key to the boil, pressure began asphaltene, phase transitions and specific resistance, pollution - pollution WRM (mud oil based), peeled CO2purified C1purified C2-5and purified C6+; indicators of phase transitions is a graph of fluorescence, graph-gas detector, SDS, SAS and optical borehole camera; and parameters for quality assurance optical absorption spectrum, fluorescence spectrum, viscosity, density, pressure, boiling point and the detector gas.

Data processing algorithm allows to obtain a summary report that can easily be loaded into the database of fluids. Because the sampling and analysis of information in the borehole are the first stages in the process of describing fluid, they create a new archive in the database for a specific geological formation (reservoir), from which they select samples. Subsequent measurements made either at the location of the well or terrestrial plant or in the laboratory are included in this archive as they become available. In the archive samples also create a page "chain of security", which displays the parameters of the test at different stages (well, under water, at the location of the well, on the surface, in the laboratory) to facilitate specimen extraction and tracking process.

The database also C is Gruaud graphic display downhole data because they facilitate analysis and comparison with laboratory measurements. Useful displays include a fluid composition, the GF, the dependence of the hydrodynamic pressure and temperature from the time the pollution monitoring UBR, the dependence of the characteristic fluorescence and gas from time to time, the optical channels and petrophysical logs, identifying the place of sampling.

In this place of sampling can be filled with fluid, one or more vessels. For chain security is very important to determine the vessels ordinal numbers for traceability in the later stages. The database facilitates comparison between samples taken at the same depth, and it can be used as a check on quality control.

When the sample reaches the surface, the main laboratory analysis of pressure-volume-temperature (PVT) can be performed at the location of the wells using the PVT Express from Schlumberger or other analyses, but, if necessary, you can select more samples using downhole analyzer fluids. The first step is to test the suitability of the sample by measuring the pressure of the sample at the opening of the vessel. The value below the specified pressure of the sample when the occlusion of the vessel, taking into account temperature changes, the selection of the sample indicates that part of the contents of vessel mo the La to flow.

If the test pressure at the opening of the vessel is satisfactory, the analysis of the fluid at the location of the wells will continue as scheduled, otherwise the sample will be transferred to the laboratory. The fluid composition, the GF and pollution ABW measured and compared with measurements in the borehole. If the properties of the fluid and the location of wells or laboratories are not consistent, and if leakage (the difference between the pressure at the opening and clogging) is not detected, it is possible to investigate phase transitions (i.e. subpattern used for testing, may be representative). If the phase transition is not detected, repeat the measurements made in the borehole, in the laboratory, to avoid the problem of calibration. All these processes verifying the suitability preserved and commented in the database.

Basically there are five situations that may give unsuitable sample, namely the loss of color (loss of components or phase transitions), the loss of gas, loss of components, the scattering of light and the differences in per-channel comparison of the optical spectrum. Comparison of the optical spectra obtained with the well and in the laboratory, gives all the information and therefore the chain of preservation it is important to repeat the same measurements either at the location of the well or in the lab is satorii using properly reconfigured the subpattern.

Borehole methods are reproduced in the laboratory or in place well and are displayed in the topic of quality assurance in the database. In the lab, measure the fluid composition using gas and liquid chromatography, or other devices for measuring the composition. Comparison of results obtained by different methods is very instructive. In addition, the optical absorption spectrum can be measured in the laboratory or in the location of the wells by using a copy of the downhole spectrometer or other spectrometer.

Duplication of downhole measurements in the laboratory or in the location of the wells not only allows you to check the suitability of the samples and certify the agreement with the chain of preservation, but also helps to identify and timely address other problems, such as equipment failures, problems of interpretation and selection of the incorrect samples, repeated handling of samples and/or methods of transfer of the sample.

From the foregoing detailed description of specific embodiments of the invention, it follows that the process chain security is new. Although specific embodiments of the invention have been described herein in some detail, this has been done solely for the purposes of describing various features and aspects of the invention but not to limit the scope image is etenia.

1. The way to ensure the selection of a representative sample of the fluid, namely, that
select the sample fluid at the point of selection, located in the borehole,
analyze physical and chemical properties of the sample fluid at the point of selection, located in the borehole,
write down the properties of the sample at the point of selection in the electronic archive database,
analyze physical and chemical properties of the sample fluid at a location remote from the sampling point in the borehole,
write sample properties located in a remote location, in the archives,
confirm the correctness of the downhole sample fluid by comparing the properties of the sample at the point of selection and properties of a sample in a remote location, which
compare the pressure in the occlusion in the vessel for sample point selection in the downhole pressure at the opening in the vessel for sample in a remote location, taking into account temperature changes to determine the pressure difference in a pre-selected range of acceptable differences of pressure,
write down the properties of the sample that is tested for correctness in the archive.

2. The method according to claim 1, characterized in that the sampling point in the well, located near the productive layer (collector).

3. The method according to claim 1, wherein the remote location is the location of the wells from which the selected sample flue the A.

4. The method according to claim 1, wherein the remote location is in the lab.

5. The method according to claim 1, characterized in that in the analysis of downhole sample fluid in a remote location duplicate analysis methods used to obtain the properties of the downhole sample at the point of selection.

6. The method according to claim 1, characterized in that it further comprises the steps are recorded in the archive of information relating to the transfer of the sample from one physical location to another.

7. The method according to claim 1, characterized in that the properties of the sample at the point of selection include the location of the sampling points located in the well, the maximum temperature point selection during the selection of the sample, the pressure in the vessel for sample when plugging in the point selection, located in the borehole, the identification of the vessel with the selected sample.

8. The method according to claim 7, characterized in that the properties of the sample at the point of selection additionally include the composition of the sample and indicators of phase transitions.

9. The method according to claim 1, characterized in that at the stage of validate record information relating to differences between the properties of the downhole sample point selection and properties of the sample in a remote location.

10. The method according to claim 1, characterized in that the archive is based on Internet technologies.

11. The method according to claim 1, characterized in that it further contains the inhabitants of the stage, which provide the page chain of preservation of the samples in the archive, displaying options validate the sample fluid.

12. The method according to claim 2, characterized in that in the analysis of a sample of well fluid in a remote location duplicate the methods of analysis used to obtain the properties of the sample at the point of selection, located in the well.

13. The method according to claim 2, characterized in that the properties of the downhole sample point selection include
the location of the sampling points located in the borehole,
the maximum temperature sampling points located in the borehole, during the selection of the sample,
the pressure in the vessel for sample when plugging in the point selection in the hole
identification of the vessel with the selected sample.

14. The method according to claim 2, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive, displaying options validate the sample fluid

15. The way to ensure the selection of a representative borehole sample fluid, namely, that
select the sample fluid at the point of selection, located in the well near the productive layer (collector),
analyze physical and chemical properties of the downhole sample fluid at the point of selection, located in the borehole, the properties of the sample at the point of selection VK is ucaut in yourself
the location of the sampling points located in the borehole,
the maximum temperature sampling points located in the borehole, during the selection of the sample,
the pressure in the vessel for sample when plugging in the point selection in the hole
identification of the vessel with the selected sample,
the composition of the sample and
indicators of phase transitions,
write down the properties of the downhole sample point selection in the electronic archive database,
analyze physical and chemical properties of the downhole sample fluid at a location remote from attacki selection in the well,
write sample properties located in a remote location, in the archives,
confirm the correctness of the downhole sample fluid by comparing the properties of the downhole sample at the point of selection, located in a remote location, and
write down the properties of the sample that is tested for correctness in the archive.

16. The method according to item 15, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive, displaying options validate the sample fluid.

17. The way to ensure the selection of a representative borehole sample fluid, namely, that
select the sample fluid at the point of selection, located in the well near the productive layer (collector),
analyze the physical and chemical with the STS downhole sample fluid at the point of selection, located in the well,
write down the properties of the sample at the point of selection in the electronic archive database,
analyze physical and chemical properties of the downhole sample fluid at a location remote from the sampling point in the borehole,
write sample properties located in a remote location, in the archives,
confirm the correctness of the downhole sample fluid by comparing the properties of the downhole sample at the point of selection, and properties of a sample located in a remote location, which compares the pressure in the occlusion in the vessel for sample point selection in the downhole pressure at the opening in the vessel for sample in a remote location, taking into account temperature changes, to determine the pressure difference in a pre-selected range of pressure differences, and
write down the properties of the sample that is tested for correctness in the archive.

18. The method according to 17, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive, displaying options for verifying the suitability of the sample fluid.

19. The way to ensure the selection of a representative borehole sample fluid, namely, that
select the sample fluid at the point of selection, located in the well near the productive layer (collector),
analyze the physical and chemical t the VA downhole sample fluid at the point of selection, located in the borehole, the properties of the sample at the point of selection include
the location of the sampling points located in the borehole,
the maximum temperature sampling points located in the borehole, during the selection of the sample,
the pressure in the vessel for sample when plugging in the point selection in the hole
identification of the vessel with the selected sample,
write down the properties of the downhole sample point selection in the electronic archive database,
analyze physical and chemical properties of the downhole sample fluid at a location remote from the sampling point in the borehole,
write sample properties located in a remote location, in the archives,
confirm the correctness of the downhole sample fluid by comparing the properties of the downhole sample point selection and properties of a sample located in a remote location, which
compare the pressure in the occlusion in the vessel for sample point selection in the downhole pressure at the opening in the vessel for sample in a remote location, taking into account temperature changes, to determine the pressure difference in a pre-selected range of pressure differences, and
write down the properties of the sample that is tested for correctness in the archive.

20. The method according to claim 19, characterized in that it further comprises a stage on which provide countries the CC "chain of preservation of the samples in the archive, displays the parameters validate the sample fluid.

21. The way to ensure the selection of a representative sample of the fluid, namely, that
select the sample fluid at the point of selection, located in the borehole,
analyze physical and chemical properties of the downhole sample fluid at the point of selection, located in the borehole,
write down the properties of the sample at the point of selection in the electronic archive database,
analyze physical and chemical properties of the sample fluid in the first location remote from the point of selection,
write down the properties of the sample at the first remote location in the archive,
confirm the correctness of the downhole sample fluid by comparing the properties of the downhole sample point selection and properties of the sample at the first remote location,
write down the properties of the sample at the first remote location,
analyze physical and chemical properties of the downhole sample fluid in a second location remote from the point of selection,
write down the properties of the sample in the second remote location in the archive,
confirm the correctness of the downhole sample fluid by comparing the properties of the downhole sample point selection and properties of the sample in the second remote location, which
compare the pressure in the occlusion in the vessel for sample point selection located downhole pressure during uncapping suck in the e sample in a remote location, with regard to temperature changes, to determine the pressure difference in a pre-selected range of pressure differences.
write down the properties of the sample tested for suitability in the archive.

22. The method according to item 21, wherein the remote location is the location of the wells from which the selected sample fluid.

23. The method according to item 21, wherein the remote location is in the lab.

24. The method according to item 21, wherein when analyzing the downhole sample fluid in the first and second remote location duplicate the methods of analysis used to obtain the properties of the sample at the point of selection, located in the well.

25. The method according to paragraph 24, characterized in that it further comprises the steps on which
perform tests downhole sample fluid in at least one of the remote locations,
record the test results in the archive.

26. The method according to item 21, wherein the properties of the downhole sample point selection include the location of the sampling points located in the well, the maximum temperature point selection during the selection of the sample, the pressure in the vessel for sample when plugging in the point selection, located in the borehole, the identification of the vessel with the selected sample.

27. The method according to paragraph 24, wherein the properties of the sample at the point of selection, located in the well include
the location of the sampling points located in the borehole,
the maximum temperature sampling points located in the borehole, during the selection of the sample,
the pressure in the vessel for sample when plugging in the point selection in the hole
identification of the vessel with the selected sample.

28. The method according A.25, characterized in that the properties of the sample at the point of selection include the location of the sampling points located in the well, the maximum temperature point selection during the selection of the sample, the pressure in the vessel for sample when plugging in the point selection, located in the borehole, the identification of the vessel with the selected sample.

29. The method according to item 21, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive that displays the validation settings are correct for the sample fluid.

30. The method according to p, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive that displays the validation settings are correct for the sample fluid.

31. The method according to item 27, characterized in that it further comprises a stage on which provide the page chain of preservation of the samples in the archive that displays the validation settings are correct for the sample fluid.

32. The method according to p, characterized in that dopolnitelnaja stage, which provide page "chain of security" in the archive that displays the validation settings are correct for the sample fluid.



 

Same patents:

FIELD: medicine.

SUBSTANCE: diagnosis of trichinosis in experimentally infected laboratory animals is enabled by microscopy. The compressed samples of animal's muscular tissue are analysed for the presence, count and viability of trichina larvae. The analysis is intravital. The weight of biopsy material of skeletal muscles is 1-1.5 mg. The biopsy material is compressed between two slides; compression intensity and constant to impulsive character are varied manually in microscopy. Repeated analysis of the animal's biopsy material is carried out in various time after infection with standard doses of invasive material used in modeling invasion.

EFFECT: technique improves information value and accelerates examination of laboratory animals experimentally infected by trichinosis.

2 ex, 3 tbl

FIELD: medicine.

SUBSTANCE: to determine the immunopathological response in children with atopic dermatitis, sections of gastrointestinal biopsy material are exposed to morphological examination. There are examined intraepithelial lymphocytes and lymphoid nodules in tissue of antral stomach and (or) duodenum and direction of lymphocyte migration. If lymphoid nodules observed are combined with lymphocyte migration in a mantle region faced the epithelial cover, and intraepithelial lymphocytes with lysis zones prevail, the response is determined as delayed hypersensitivity.

EFFECT: method improves clinical effectiveness for atopic dermatitis in children, with respect to determining delayed hypersensitivity and well-timed change of therapeutic approach on the basis of individual approach.

3 ex

FIELD: measurement equipment.

SUBSTANCE: invention is related to method for detection of average gold content in ore bodies. Method includes taking and processing of trench samples with further performance of assay tests for two standard sub-samples of 50 g each. Then ore body is contoured by boundary value of gold content, duplicates of trench samples included into contour of ore body are weighed, and laboratory technological sample is made up with weight of more than 300 kg from 11-13 kg of trench samples duplicates with further enrichment of the whole mass of laboratory technological sample on gravity plant. After gravity plant, gravitational concentrates are produced with less than 3% of laboratory technological sample mass and with content of gold of more than 50 g/t, tails and intermediate product from cleaning of equipment. Then free ligature gold is extracted from each gravitational concentrate and intermediate product from equipment cleaning for further detection of its weight and conversion into chemically pure gold of average sample, weights of concentrates, tails and intermediate product yield from cleaning equipment are detected. Then two averaged sub-samples are selected with weight of 50 g each from all products of enrichment, assay tests are carried out, content of gold, close to true one, is calculated in ore body by weight of ligature gold and results of assay tests. Afterwards two averaged sub-samples are taken of 200 g each from enrichment products for performance of confirmatory cyanidation with specification of gold content, which is close to true value, and total weight of chemically pure gold is detected in enrichment products.

EFFECT: improved validity of gold content close to true one independently on size of its particles.

2 cl, 3 dwg, 6 tbl

FIELD: medicine.

SUBSTANCE: invention relates to medicine, endocrinology, pathophysiology and biology. For diagnostics of hyper- and hypo- function of thyroid gland physical method of examination is used. Glass plate, on which preliminarily in form of path applied is 1% water solution of asparaginic aminoacid (1% WSAA) in volume 0.03-0.05 ml, is placed on neck skin surface in zone of thyroid gland projection. Plate is kept on neck surface in zone of thyroid gland projection during 3-5 minutes. Preparation is dried in thermostat at T= +18-20°C during 2-3 minutes, after that is examined in polarised light with quartz compensator. If in preparation crystals - small plumose with separate rhombic inclusions- are present, hyperfunction of thyroid gland is registered. If only rhombic inclusions are present, hypofunction of thyroid gland is diagnosed.

EFFECT: method is simple in realisation, highly-informative, reduces examination time and financial costs.

10 dwg, 6 ex

FIELD: testing equipment.

SUBSTANCE: method provides preliminary mechanical cleaning of external surface of ice specimens from biological and chemical contaminations by germless tool under minus 15°C. Then ice segments are treated by acyclic saturated hydrocarbon under minus 15°C by means of their submergence in vessel with acyclic saturated hydrocarbon. As acyclic saturated hydrocarbon pentane is used. After that ice segments are submerged in Freon cooled to minus 15°C for removal of acyclic saturated hydrocarbon. Ice specimens are ozonised in air-tight aluminium box using germicide UV lamp during not less than 30 min under minus 15°C. After that ice is treated by disinfectant solution free from chlorine in air atmosphere containing less than 100 particles of size less than 0.5 mcm in cubic foot. Ice specimens are washed with pure water first by means of submerging, then under water flow. After that ice is placed in sterile vessels. Pure water has resistance 18 megohm, it contains dissolved organic carbon 1 mcg per litre and is additionally cleaned by membrane with pore size of 5 kDa.

EFFECT: method allows to enhance integrity of decontamination performance.

2 cl

Explosive source // 2381480

FIELD: measuring technology.

SUBSTANCE: invention refers to gas analysis and covers testing of explosive vapour detectors. An explosive source contains a container with its internal coated with explosive traces, with a metal wire net in the bottom and a removable cover. The container comprises a quadric cylinder with internal diametre and length of a generating internal surface 0.4…0.7 and 0.3…0.4 respectively of the diametre of the sampler reflector of the explosive vapour detector. The net is made of wire of the diametre 0.007…0.015 and the back mesh size 0.02…0.03 of the internal diametre of the container.

EFFECT: substantially improved effectiveness of the explosive source of with simultaneous minimisation of weight and dimensions.

2 dwg

FIELD: medicine.

SUBSTANCE: invention refers medicine, namely to oncology. To predict skin melanoma severity, an individual prognostic calculation is made by formula: the prognostic factor = 4.74472 + 0.311714*sex + 0.0920974*age - 1.22181*stage of disease - 0.232456*blood group - 2.77509*Rhesus factor + 0.597768*observed ulcerations + 1.27497*observed mitoses - 1.11004*observed lymphoid infiltration - 1.31926*histological tumour type + 0.0719651*tumour thickness - 0.562743*invasion level. The following values are specified for the qualitative indicators: female - 0, male - 1; Rhesus negative - 0, Rhesus positive - 1; observed ulcerations, mitoses, lymphoid infiltration - 1, absence of ulcerations, mitoses, lymphoid infiltration - 0; nodal histological tumour - 1, lentigomelanoma - 2, superficially extending melanoma - 3, epithelioid cell - 4, pigment-free melanoma - 5, several histological types combined - 6. The absolute values are specified to age, invasion level, blood group, melanoma thickness, melanoma stage, according to the standard Roman designations appropriate. If the factor does not exceed 2.2, favourable clinical course of melanoma is predicted, while the factor equal or more than 2.2 shows unfavourable prognosis.

EFFECT: method allows for shortest individual prediction of melanoma severity with using results conventional techniques.

1 tbl

FIELD: medicine.

SUBSTANCE: invention concerns medicine, endocrinology, physiopathology and biology. Express diagnostics of suprarenal hypercortisolism is ensured as follows. A glass plate is placed within a suprarenal projection - on the skin between IX thoracic and I lumbar vertebras. This plate is covered with a path-shaped biological indicator - 1% aqueous solution of asparaginic amino acids in volume 0.01-0.03 ml. The plate is kept within suprarenal projection for 3-5 minutes. A preparation is dried up in a thermostat at T=+18-20°C within 2-3 minutes, then analysed in polarised light with a quartz compensator. Suprarenal hypercortisolism is diagnosed if the crystals - discoid spherulites and/or frostwork skeleton crystals are found in the crystal preparation.

EFFECT: method improves information value of express diagnostics of hypercortisolism with reduced material costs.

7 dwg, 4 ex

FIELD: metallurgy.

SUBSTANCE: invention is related to ferrous metallurgy, in particular to technology for production of standard sample of steels, cast irons or alloys composition with certified content of one or more volatile chemical elements. Method includes preparation of steel, cast iron or alloy melt and its microalloying with volatile metals, moulding of cast and/or deformed section, production of sample for chemical and/or physical methods of analysis and certification of controlled elements. Microalloying of melt is done with melt on the basis of (tin or copper or aluminium), which contains one or several volatile metals, selected from group, including lead, bismuth, antimony, tellurium, zinc, with the following ratio of elements, wt %: lead 0.15-8.0, bismuth 0.15-8.0, antimony 0.35-8.0, tellurium 0.15-8.0, zinc 0.15-8.0, (tin or copper or aluminium) the rest.

EFFECT: invention provides for required chemical homogeneity of standard sample with previously set low concentrations of certified volatile elements due to their insertion into metal melt in the form of alloy, and practically excludes their evaporation and reduces emission of volatile elements vapors into working zone.

4 cl, 6 tbl

FIELD: medicine.

SUBSTANCE: group of inventions relates to field of medicine, namely to diagnostics. In order to detect endogenous organism intoxication blood serum or plasma are tested by method of wedge dehydration and if present are peculiarities of line: dashed, parallel, concentric, multi-ray, rounded and round cracks, cracks in form of black net, in form of fish scales, wrinkles, Wallner lines and Arnold tongues, endogenous intoxication is diagnosed. In order to evaluate degree of endogenous organism intoxication severity, presence of range of characteristic peculiarities is determined by ten-point scale and by size of area occupied by said peculiarities. Inflammatory character of endogenous intoxication is determined if rounded, round cracks are present in central zone of dehydrated drop. If cracks in form of black net are present in its central zone necrotic character of endogenous intoxication is determined. Lipid exchange disturbances are determined by detecting cracks in form of fish scales in intermediate zone. If multi-ray cracks are present in central zone, endogenous intoxication caused by renal insufficiency is determined.

EFFECT: increase of accuracy of endogenous organism intoxication diagnostics.

3 cl, 15 dwg, 2 tbl, 9 ex

FIELD: measuring equipment.

SUBSTANCE: invention is related to hydrodynamic research of oil and gas wells, and may be used to study physical properties of their layers. Device comprises implosion chamber, packer module, moisture gauge, resistivity metre, sampler, module of samplers, slide valve unit, additional pressure sensor arranged over packer module. Besides slide valve unit is equipped with valves and installed over module of samplers with the possibility to switch flow of samples over to implosion chamber arranged in upper part of device, and to module of samplers through sampler, which comprises differential pistons, and sampler and implosion chamber are connected to well bore zone via vertical channel, where moisture metre, resistivity metre, sensor of layer pressure and temperature sensor are installed.

EFFECT: improved accuracy of research of hydrodynamic characteristics of oil and gas wells and improved quality of formation fluid samples at various depth due to elimination of well fluid effect at results of samples analysis and taking.

3 cl, 3 dwg

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil production industry and is intended to assess parametres of underground bed, having primary fluid and contaminated fluid. In order to produce fluids from bed, fluid is extracted into at least two inlet holes. At least one assessment diverting line is connected by fluid with at least one of inlet holes for movement of primary fluid into well instrument. At least one cleaning diverting line is connected by fluid with inlet holes for passage of contaminated fluid into well instrument. At least one circuit of fluid is connected by fluid with assessment diverting line and/or with cleaning diverting line for selective extraction of fluid in it. At least one hydraulic connector is used to selectively pull hydraulic pressure between connecting lines. At least one detector is used to measure well parametres in one of diverting lines. In order to reduce contamination, fluid might be selectively pumped along diverting lines into assessment diverting line.

EFFECT: provision of flexibility and selectivity to control fluid flow through well instrument by detection, reaction and removal of contamination.

23 cl, 30 dwg

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil production industry and is intended for assessment of bed, through which well bore passes. For this purpose method, well tool and bed fluid medium sampling system are developed. Bed fluid medium is extracted from underground bed into well tool and is collected in sampler chamber. Diverting discharge line in working condition is connected to sampler chamber for selective removal of contaminated or clean part of bed fluid medium from sample chamber. As a result contamination is removed from sampler chamber. At the same time clean part of bed fluid medium may be let through another sampler chamber for collection or contaminated part of bed fluid medium may be dropped into well bore.

EFFECT: provision of possibility to remove contaminated fluid medium from well tool and extraction of cleaner fluid medium from underground bed.

38 cl, 8 dwg

FIELD: process engineering.

SUBSTANCE: proposed device is intended for fluid medium flowing in min pipe and containing at least selected phase and another phase, and comprises sampling device to sample specimen from fluid medium from multiphase mixture. Proposed device comprises sampling variable-volume chamber to allow gravity-forced disintegration of fluid medium into that enriched by selected phase and fluid medium enriched by at least another one phase. Device incorporates also valve-type manifold that communicates sampling device to sampling chamber to direct fluid medium into said chamber and enriched fluid medium back into main pipe. Proposed method consists of three stages. First stage comprises sampling multiphase fluid medium by connecting one probe to sampling chamber and increasing chamber inner volume to allow gravity-forced fluid medium specimen disintegration into that enriched with selected phase and at least one another fluid medium enriched with useless phase. Second phase comprises draining at least one fluid medium enriched with useless phase back into main pipe by connecting sampling chamber with one probe to reduce chamber inner volume. Then first and second stages are repeated to produce given amount of fluid medium enriched by selected phase in sampling chamber. Third stage consists in forcing aforesaid phase from sampling chamber, connecting the latter to outlet channel and reducing chamber inner volume.

EFFECT: improved operating performances.

16 cl, 2 dwg

FIELD: oil-and-gas production.

SUBSTANCE: sampler, consisting of system of fluid sampling, includes sampling valve and storage of fluid sample, electrohydraulic system. Electrohydraulic system is implemented as logical for fixation and unlock of sampler in well, which includes electric motor, connected to pump, which is connected to the first distributor through return valve, with filter, with safety valve and with the second distributor, connected to valve of sampling and storage of fluid sample, and also to the first, to the second, to the third and to the fourth sensor - pressure limit switch, the first distributor is connected parallel to head end of the first hydraulic ram, of the second hydraulic ram and the third hydraulic ram, stocked cavities of which are connected to third distributors, hydraulic accumulator, to the fifth sensor - pressure limit switch and to the fourth distributor.

EFFECT: reliability enhancement of sampler operation, improvement of automation of sampling and extension of capabilities.

1 dwg

Depth sampler // 2360109

FIELD: mining.

SUBSTANCE: depth sampler consists of ballast chamber, of actuator with module of control, of main and additional sample taking chambers equipped with medium-separating pistons, hydro-resistors and valve units. Each medium-separating piston is equipped with a compensating tube, which connects under-piston cavities of sampling chambers between them. Also hydro-resistor is assembled at the end of each tube.

EFFECT: simplification and upgraded efficiency of operation of units of device, decreased dimensions of sampler, improved quality of separation of taken samples, and validity of measured information.

1 dwg

FIELD: physics, measurements.

SUBSTANCE: proposed set of inventions relates to oil product, particularly, to getting and analysing the samples of in-place fluid medium. The proposed method comprises the steps that follow. First, optical density data on fluid medium sample is obtained for, at least, one-colour channel, water channel or a set of optical channels by measuring wavelength optical density with the help of fluid medium analyszer, and, at least, in one channel of fluid medium component to determined the fluid medium composition or properties with the help of fluid medium downhole sampler furnished with optical pickup. The colour absorption function is defined based on optical data for fluid medium sample in, at least, one colour channel. The part of optical density subject to color absorption, absorption in water in, at least, one aforesaid channel of fluid medium component. The electronic system designed to refine the data on the fluid medium sample incorporates an input device, memory coupled with input device and memory.

EFFECT: accurate data on fluid medium sample resulted from elimination of colour, water and scattering effects.

25 cl, 13 dwg

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

FIELD: mining.

SUBSTANCE: device contains receiving chamber for samples, pump, communicating with chamber, pressure measuring device, communicating with sample and optical analyser, optically connected with sample; device and analyser facilitate pressure drop in sample and determine pressure which provides extremum of light amount passing through sample.

EFFECT: preventing precipitation of hard substances and bubbling during sampling.

19 cl, 27 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention refers to transporting samples of fluid mediums and/or rheological measurements to surface of division. According to one of versions the method consists in circulating heated fluid medium in the first region of the reservoir bed wherein a composition of heavy oil is present or considered present with implementation of a pump assembled on the surface and an installation for well completion containing a well pump and a sampling tool within the period of time and at consumption adequate for obtaining fluid composition of heavy oil; then sampling of fluid composition of heavy oil is performed by means of the sampling tool.

EFFECT: facilitation of sampling from reservoir bed by means of device or its part used for supply of heat into reservoir bed region in question.

20 cl, 14 dwg

FIELD: oil and gas extractive industry.

SUBSTANCE: method includes picking a sample of bed fluid under pressure by means of pump. Sample of fluid is then compressed by moveable piston, actuated by hydrostatic pressure in well through valve. Compressed sample of bed fluid is contained under high pressure inside the chamber with fixed volume for delivery to well surface. Moveable piston is in form of inner and outer bushings, moveable relatively to each other. At the same time several tanks for picking samples from several areas may be lowered into well with minimal time delays. Tanks may be emptied on well surface by evacuation pressure, to constantly provide for keeping of pressure of fluid sample above previously selected pressure.

EFFECT: higher reliability.

6 cl, 14 dwg

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