Device for sampling of liquid from pipeline
FIELD: machine building.
SUBSTANCE: device includes sampling tube mounted in pipeline perpendicular to flow movement and provided with slot-like inlet from side of flow movement. Slots in inlet are made horizontally along the height of pipeline and are directed toward liquid flow. Depth of slots changes from small near pipeline walls to largest near pipeline axis. Opposite to inlet in sampling tube there made is a vertical slot.
EFFECT: increasing sample uniformity and improving accuracy of sample composition determination.
The invention relates to the oil industry and can be used when sampling the fluid from the pipeline.
A device for sampling fluid from the pipeline, including sampling tube installed vertically on the pipe diameter. The axis of the openings of the tubes are parallel to the pipeline axis and directed towards the flow. The opposite ends of the tubes included in the mixing chamber, from which the collected sample is supplied in a quality unit. The diameters of the selected tube satisfy the relationship 13:10:6:10:13 (the Sampler. GOST 2517-85 (p, cert).
However, the known device has a low representativeness of samples to be taken.
A device for sampling fluid from a pipeline containing sampling tube mounted in the pipe perpendicular to the traffic flow and having an inlet slit-like shape with side flow, the profile of which is selected from the conditions of admission under excessive fluid pressure from the pipeline is proportional to the flow rate at each elementary horizontal section of pipe with the same aspect ratio and with an average velocity at the inlet to the sampling tube is equal to the average flow velocity in the pipe (USSR Author's certificate No. 1700424, CL G01N 1/10, 1991).
However, the known device, the sampling element has a higher metal content, and its hydraulic resistance is large enough. In the known device in the sampling tube installed stabilizer flow rate, however, such placement of the stabilizer reduces the flow cross-section sampling element and increases the hydraulic resistance. The result can be technically difficult to ensure isokinetic sampling (especially when a large flow rate of the pipeline). And high quality of the resulting sample may not always be guaranteed.
The closest to the proposed invention the technical essence is a device for sampling fluid from the pipeline, including sampling tube mounted in the pipe perpendicular to the traffic flow and having an inlet slit-like shape with side flow, the profile of which is selected from the conditions of admission under excessive fluid pressure from the pipeline is proportional to the flow rate at each elementary horizontal section of pipe with the same proportionality constant, with an average velocity at the inlet to the sampling tube is equal to the average flow velocity in the pipe, the diameter and length of the sampling tube is selected from a ratio of 1:(12-30) (Patent RF №2085893, publ. 27.07.1997 - prototype).
A disadvantage of the known device t is aetsa violation of the kinetics of the movement of the fluid flow in the pipeline, the accumulation of the oil phase in the device that distorts the composition of the sample and leads to inaccuracies in the determination of the sample composition.
In the proposed invention solves the problem of increasing the homogeneity of the sample and thereby increase the accuracy of determining the composition of the sample.
The task is solved in that the device for sampling fluid from the pipeline, including sampling tube mounted in the pipe perpendicular to the traffic flow and having an inlet slit-like shape with side flow, according to the invention in an entrance aperture slit-like shape of the slit is made horizontally along the entire height of the pipe and is directed towards the flow of the fluid, the depth of the cracks varies from small near the pipe walls to highest near the axis of the pipe, opposite the inlet to the sampling tube is made of a vertical slit.
The development efficiency of the reservoir, the profitability of the well operation, timely decisions on the treatment of bottom-hole formation zone wells, repair of wells, evaluate the effectiveness of new technologies directly associated with obtaining reliable information about the content of oil and water in production wells. The solution to the problem of continuously monitoring the amount of oil and water in productionwise still remains relevant despite the currently available technical solutions to this problem. Existing sampling devices slotted type is oriented towards the flow of the liquid. The disadvantages of these devices are incomplete coverage of the cross section of the liquid, the lack of end-to-end flow, which entails the deposition of oil on the device.
The main selection criteria quality of the sample wells is a sampling from the entire cross-section of the fluid flow in the pipeline in a homogeneous or mixed flow, without the kinetics of the movement, without accumulation of the oil phase in the sampling device. In the proposed device solves the problem of increasing the homogeneity of the sample and thereby increase the accuracy of determination of the sample composition. The problem is solved by the device represented in figure 1-4.
Device for sampling fluid from the pipeline includes a sampling tube 1 mounted in the pipe 2 perpendicular to the traffic flow 3 and having an inlet opening in a horizontal slots 4 from the flow path 3. Horizontal slit 4 is made horizontally along the entire height of the pipeline 2. The depth of horizontal slits 4 is changed from a small 5 near the bottom and top to highest point 6 near the axis of the pipe 2. Opposite horizontal slots 4 in the sampling tube 1 has a vertical slit 7.
Under the placement sampling tube 1 to drobopro the remote control 2 is welded to the sleeve 8 with the formation of a welded seam 9. On the clutch 8 screw sampling tube 1. Sampling tube 1 is equipped with scontrino contrarily 10 label 11. Mark 11 and a horizontal slit 4 is directed towards the flow of the production well 3. Sampling faucet 12 nevernot on the outlet fitting 13 sampling tube 1, which is in communication with the internal volume 14 of the sampling tube 1.
The device operates as follows.
Make installation of the device. Well stop. In the discharge pipe 2 wells in the installation location of the device cut out "window". Under a hole in the body of the pipe 2 are welded welded seam 9 of the sleeve 8. The clutch 8 is wrapped around a sampling tube 1. Sampling tube 1 is installed strictly according to the label 11) and the nut 10. Tag 11, and hence the horizontal slit 4, is directed towards the flow of the production well 3. On the outlet fitting 14 sampling tube 1 wrapped around the sampling valve 12. The well is put into operation, check the tightness of the weld areas 9 and sampling tube 1. The flow of well production 3 passes through the horizontal slit 4 and the vertical slit 7. When this occurs the transition from laminar flow to turbulent. Happen mixing layer flow, normalization of flow. Sampling of production wells 3 carry out the opening of the sampling valve 12 and the discharge of products of SLE is new well 3 in standard glassware (not shown). When opening the sampling valve 12 production wells 3 passes through the horizontal slit 4, the internal volume 14 of the sampling tube 1, the sampling valve 12 in standard glassware, and at the same time part of the flow passes through the vertical slit 7. Sampling during this exercise from all sections of the production flow bore 3, without affecting the kinetics of motion. After sampling the sampling valve 12 is closed.
In the proposed device is a high homogeneity of the sample and thereby increases the accuracy of determination of the sample composition. Due to the presence of horizontal and vertical slots remains the kinetics of flow of fluid in the pipeline, there is no accumulation of oil phase in the device.
The choice of the size of the device depends on the flow rate and is determined based on the possibility of creating a turbulent flow in the area of sampling, depending on the calculated flow area conditional on the pipe diameter and fluid volume.
It is known that turbulent fluid flow is provided by the Reynolds number Re≥2320, which is determined by the formula:
where V is the velocity of the fluid, m/s,
D - diameter of pipe, m,
v - kinematic viscosity, m2/s
where QWthe output prehodyaschest, m3/day,
S is a sectional area of the pipe, m2,
where µW- dynamic viscosity, PA*s,
ρW- liquid density kg/m3.
The dynamic viscosity of the oil is known for each object of development in MPa*sec (PA*s*10-3). Unambiguous determination of fluid viscosity (µW) calculated no, all formulas are approximate and depend on the properties of oil, water and gas in wells. Therefore, in the calculations when determining the criteria for selecting the device and place the installation on the wellhead depending on the flow rate of the fluid viscosity µWaccepted ≈ 15*10-3PA*S.
The Reynolds number after conversion:
Re=V*D/ v=V*D*ρW/µW=4* QW* ρW/ π*D* µW*86400=QW* µW/D* µW*67824
Nominal diameter of the pipeline in the area of selection is determined by calculating the free flow area after you install the sampling tube: Dy=(√STr-SSPS+ SUSPS/0,785) mm or Dy=(√STr-ΔSSPS/0,785),
where STr- section of the pipe without sampling tube, mm2,
SSPS- the section of the sampling tube, overlapping the common section of the pipe, mm2,
SUSPS- section vertical slit sampling trunk is, output, mm2.
where h3- the height of the sampling tube ≈ DVNTRthe inner diameter of pipe, mm,
dNSPs- outer diameter pasabordo tube, mm,
where Lin- the height of the vertical gap, mm,
iny- the width of the vertical gap, mm
or Dy=(√0.785* DVTR2-DVTR*dNSPs+Lin*iny/0,785) mm
Criteria for the use of various devices for fluid extraction (slot probabilitv) depending on the flow rate of the well.
1. Slotted probsably - 100, place of installation, the manifold wellhead, the tubing diameter is 100 mm
DTr=100 mm; d bSPS=24 mm; dUSPS=18 mm; LUSPS=93 mm;y=3 mm; sy=3 mm - step
then Qimp=2320*0,085*15*67,824/1000=200 m3/day;
when µW=15*10-3PA*s ρW=1000 kg/m3.
2. Slotted probsably - 50, installation location, valves or manifold wellhead, the tubing diameter equal to 50 mm
a) DTr=50 mm; d bSPS=16 mm; dUSPS=10 mm; LUSPS=46 mm;y=2 mm; sy=2 is m - step horizontal slits.
b) d bSPS=22 mm; dUSPS=18 mm; LUSPS=25 mm;y=2 mm; sy=3 mm.
The method of calculating slits
Depending on the flow rate of the fluid, of water production, the pressure in the pipeline, the installation location of the gap probabilita selected outer and inner diameter of the sampling tube, the number of horizontal slits, their width and spacing between the slits, as well as the height and width of the vertical slit.
Square horizontal cracks are calculated from the condition of proportionality to the square of the fluid flow along the pipe section to the areas of the slits sampling tube respectively at the levels planned horizontal cracks (horizontal plane).
Is determined by the aspect ratio of the cross section of fluid flow in the pipeline and in the sampling tube relative to the center of the pipeline:
Ks=sabout SPS/ Sp=Losps*/ DOTR*=Losps/ DTr=π* rEXT. SPS/ DTr
where Dabout=DTr- internal diameter of pipe, mm
Losps- the length of a semicircle cracks on the inner radius relative to the
the centre of the pipeline, mm
rEXT. the PZ - the inner radius of the sampling tube, mm
in - plan slit width, and the imaginary width of the fluid flow at this level, mm.
1. Define the chord of the cross section of the pipeline located on the same horizontal plane with horizontal slots,
where xo=Do=DTrand, respectively, xifrom 1 to N slots.
2. Defines the length of the horizontal semicircular slots:
3. In the manufacture of sampling tube in the mechanical workshops required for each horizontal slit to calculate the distance shown in figure 4:
- from the center of the sampling tube to cut slits hi
- from the outside radius of the sampling tube to cut the gap Δh,
and the chord of the horizontal slit andi,
determined by the formula:
4. The height of the ve is a vertical slit accepted within L vs~ 0,92-0,93 DTrand the width of the vertical gap should not be greater than the width of the horizontal slits.
The results of the calculations bring to the table, such as the gap probabilita -100 (see table 1).
|Table No. 1|
|SP-100 DTr=100 mm|
|ddrug=24; dEIT=18; Ny=17;g=3;in=3; sg=3; Lvs=93|
|№ p/p||no cracks||Chord tubes|
|The length of the gap (level)|
Similarly performed calculations for other sizes of slit probabilitv.
When using the claimed device was detected exact match multiple measurements with data control samples collected during the stop of fluid flow in the pipeline and selection for analysis of the stopped fluid.
Application of the proposed device will solve the problem of increasing the homogeneity of the sample and thereby improve accuracy and determine the sample composition
Device for sampling fluid from the pipeline, including sampling tube mounted in the pipe perpendicular to the traffic flow and having an inlet slit-like shape with side flow path, characterized in that the inlet slit is made horizontally along the entire height of the pipe and is directed towards the flow of the fluid, the depth of the cracks varies from small near the pipe walls to highest near the axis of the pipe, opposite the inlet to the sampling tube is made of a vertical slit.
FIELD: measurement equipment.
SUBSTANCE: method involves analysis of an image of mixture surface and determination of coefficient of its non-homogeneity. The investigated mixture is uniformly distributed on a smooth surface and divided into necessary number of portions; digital images of their surfaces with build-up of brightness histograms are obtained. Then, each portion is divided into equal number of parts (probes) with build-up of their brightness histograms. Mixture non-homogeneity coefficient is calculated by comparing digital images of parts (probes) of a piston with an image of the whole portion of the investigated mixture as per brightness histograms.
EFFECT: reducing labour intensity, increasing speed and accuracy of determination of quality of mixture of components that differ as to colour.
SUBSTANCE: sampling device comprises a probe with a sharp-edged cutting edge in the lower part, a flange with a chamfer in the upper part, which is attached coaxially to the rod of a smaller diameter with a measuring scale, and a sample extractor. The cylindrical probe in the lower part is provided with two oval cutting bits with sharp-edged cutting edges. The flange in the upper part with the manufacturing hole made perpendicular to the longitudinal axis of the sampling device is attached to the bar consisting of rods of circular section which are screwed in one another with dimensional manufacturing holes. The openings are made on the surface of the rod in every 500 mm from the oval cutting bits of the probe, and their diameter is equal to diameter of the probe extractor - a rod with a conical groove. Moreover, between the cutting bits and the flange on the probe surface two longitudinal grooves are arranged opposite each other.
EFFECT: reduction of the labour intensity of sampling by providing easier penetration of the sampling device in the estimated mass, providing the possibility of batch sampling from a depth of 1,5-2 m, ensuring easy removal of the sampling device at deep layers of silage.
SUBSTANCE: device for silage sampling comprises a probe with a sharp-edged cutting edge in the lower part, a flange in the upper part, which is rigidly attached to the bar with a measuring scale, and a sample extractor. The probe 1 of square or rectangular cross section is provided in the lower part with two sharpened cutting edges 2 in the form of a dovetail. In the upper part the probe is provided with two fixing holes 3 providing its attachment to the flange 4 of the square or rectangular cross section by means of its spring-loaded clamps 6. For smooth transition from the square section of the probe 1 to the circular, the rod flange 4 in the upper part is made in the form of a truncated pyramid 11. The rod consists of bars 10 of circular section screwed into each other, with measuring technological holes 12, applied on its surface after every 100 mm. In these holes on the rod with the pin 15 a device is fixed, consisting of a sleeve 13 with two handles 14, and the extractors of the sample from the probe is the upper part of the rod, the diameter of which is less than the internal dimension of the probe.
EFFECT: reduction of labour intensity of sampling due to easier penetration of the device in the estimated mass, providing the possibility of batch selecting at a depth of 1,5-2 m.
SUBSTANCE: invention relates to field of medicine, namely to pathological anatomy. To estimate blood supply of left part of large intestine in experiment on human corpse, alternating introduction of dye solution is performed into superior mesenteric artery, internal iliac arteries and into inferior mesenteric artery with further visual observation over spread and intensity of staining of intestine tissues with dye. Introduced dye solution consists of 500 ml of distilled water, 200 g of lead nitrate and 20 ml of 1% of water solution of methylene blue. In order to estimate blood supply of left half of intestine concentration of lead nitrate in percent is determined in samples of intestine tissues by means of low-vacuum scanning electron microscope with system of energy dispersive microanalysis.
EFFECT: method makes it possible to objectively determine degree of participation of superior mesenteric, internal iliac and inferior mesenteric arteries in blood supply of left half of large intestine in experiment on human corpse.
1 dwg, 1 ex
FIELD: test engineering.
SUBSTANCE: complex comprises a housing representing the interconnected vertical panels on which the samplers with absorption packets with hubs are located. The complex also comprises solenoid valves, filters-dehumidifiers, tanks with sensors measuring temperature and pressure, sampling manifold, the gas turbine aircraft engine (GTAE) located in front of the testee, a diffuser with jet tubes, a vacuum pump, and a control panel. At that the complex is equipped with an additional tank with temperature and pressure sensors and a solenoid valve, and the samplers and solenoid valves are uniformly distributed in equal parts on the manifolds, each of which is connected to the corresponding tank.
EFFECT: enhancing the technological capabilities of the complex, reducing the time of air sampling from the compressor GTAE for its subsequent analysis for the content of harmful impurities and their concentrations, saving expensive jet fuel, increased ease of use of the complex, and reducing wear of GTAE.
SUBSTANCE: invention relates to forensic medicine. To diagnose cause of death from mechanical asphyxia sectional examination of brain is carried out. Macroscopic and microscopic changes of hypophysis are detected. If constellation of such diagnostic signs as: plethora and dilatation of cavernous sinus; plethora and visually detectable hemorrhages into hypophysis capsule and its pedicle and presence of microfocal hemorrhages; plethora of microhemocirculation vessels of hypophysis lobe; small hemorrhages in neurohypophysis are present, death resulting from mechanical asphyxia is diagnosed.
EFFECT: method makes it possible to diagnose cause of death from mechanical asphyxia.
1 tbl, 2 ex
FIELD: measuring equipment.
SUBSTANCE: automated system for monitoring exhaust gases of processing plants comprises the data processing module that comprises the server and the automated worksite equipped with a computer and a display device that provides visualisation of the results of monitoring of exhaust gases and analysis of the technical condition of the processing plants, and connected through a network equipment, local area networks with the system and module of preparation and measurement, comprising sampling sampling unit containing sampling device and the sample delivery line and the gas analysis unit. The sample delivery line is made with the ability to maintain a constant temperature of the gas sample throughout the entire length and is provided with shutoff and control valves operating in an automatic mode as a result of the control action of the programmable controller.
EFFECT: effective operational monitoring and diagnostics, and timely maintenance of processing plants.
1 dwg, 1 tbl
FIELD: measuring equipment.
SUBSTANCE: bathometer-degasifier of bottom waters comprises a sealed housing with a device for changing the internal volume, a valve and taps for gas and water. The housing is provided with internal pressure compensator and comprises the upper and lower valves in the form of coaxial cylindrical pistons which are provided with cuffs of V-shaped cross section and mounted in the upper and lower mounting holes made in the housing and provided with cuffs of V-shaped cross section. The pistons are mounted on the rod which is connected to the suspension and the load and mounted in the housing with the ability to move for the pistons exit from the mounting holes and their mounting in the mounting holes. The rod is kinematically connected with lock of open and closed states of the bathometer-degasifier, connected to the sensor of touching the bottom. And the housing is also provided with a water intake device with a filter.
EFFECT: increased reliability of samples of bottom water and gases dissolved in it and providing the ability of sampling from deep waters.
3 cl, 2 dwg
SUBSTANCE: microadmixture detector contains desorption chamber, which forms zone of desorption and has casing, channel of sample supply for introduction of sample into desorption chamber and channel for exhaust of sample-capturing gas from desorption chamber. Channels of sample supply and gas exhaust are connected with desorption chamber in realisation of process of preliminary concentration of sample-capturing gas in desorption chamber of microadmixture detector by changing desorption chamber volume, which results in providing continuous supply and accumulation of sample. Method of analysis for microadmixture detector includes continuous supply of sample into desorption chamber of microadmixture detector, which forms desorption zone. Method also includes continuous exhaust of sample-capturing gas from desorption chamber and preliminary concentration of gas, which contains captured sample, in desorption chamber by changing desorption chamber volume, with continuous supply of sample into desorption chamber and continuous exhaust of sample-capturing gas.
EFFECT: reduction of probability of non-detecting substances and increase of detector sensitivity.
10 cl, 2 dwg
SUBSTANCE: device is provided with a high post with an elevating mechanism in form of an endless tape mounted on a driving drum and a tension drum, and has samplers mounted on the post. The samplers are in form of sealed packets of polymer film connected with controlled pneumatic pumps through two-position air valves. The device further includes a control unit which controls the beginning and the duration of sample collection, and operating modes of the controlled pneumatic pumps.
EFFECT: providing prolonged sample integrity in laboratory conditions for subsequent analysis, high reliability and mobility of the device.
FIELD: oil and gas industry.
SUBSTANCE: in addition, analysis of isotopic composition of carbon of sum of hydrocarbons C2-C6 is performed and limits of values of isotopic composition of carbon, methane and isotopic composition of carbon of sum of hydrocarbons C2-C6 for reference horizons are determined. Tables and/or graphs represent ranges of values of isotopic composition of gases from reference horizons and gases are represented from inter-string space of wells or drilling fluid; as per the degree of similarity or coincidence of the above ranges of those values (or individual points) there evaluated is nature of investigated inter-string gas shows.
EFFECT: improving reliability in determination of nature of inter-string gas shows.
1 ex, 2 tbl, 1 dwg
FIELD: oil and gas industry.
SUBSTANCE: method for assessing a gas-recovery ratio for the volume drained by at least one productive gas well comprises: calibration of the changes of an isotopic composition of at least one component of the natural gas recovered from the gas well with the gas-recovery ratio gain. Sampling of the natural gas recovered from the production well, and analysis of the sample for preparing the isotopic composition of the component of the natural gas. Use of the previous calibration and the specific isotopic composition for assessing the gas-recovery ratio for the volume drained by the gas well. Use of the assessed gas-recovery ratio and total volume of the natural gas produced from the gas well to determine the volume drained by the gas well.
EFFECT: amended assessment of the gas-recovery ratio which is based on the calibrated relation of the changes in the isotopic composition of one or more components of the produced gas and the gas-recovery ratio for the volume drained by the productive gas well.
3 dwg, 9 cl
FIELD: oil and gas industry.
SUBSTANCE: in process of sampling, values of specific electric conductivity are measured on liquid arriving into a sampling chamber. At the same time measured values of specific electric conductivity and readings of pressure and temperature sensors are recorded with a surface receiving-processing station, and to form a channel of communication with it and to provide for sampler lowering and lifting, an armoured geophysical cable is used, which is withdrawn from a drilling string via a sealing device. Besides, before opening of a potentially producing bed, the sampler at the vibration and impact safe distance from a bit is fixed on the cable in the above-packer space of the above-bit packering unit, providing for direct circulation of the mud. And after opening the sampling operation is carried out by means of multiple sampling and remote express-analysis of fluid composition in every sample according to specific electric conductivity, for this purpose the chamber by means of piston displacement is released from the first sample with fluid discharge into the above-packer space. Then it is put into the initial working condition, and similarly to the first sample taking, further sampling is carried out, until extremum of specific electric conductivity values is achieved, and on the basis of this parameter, a decision is made to lift the last sample from the well or to continue drilling process, and bed parameters are identified on the basis of pressure, temperature sensor readings, and by the value and speed of increments of specific electric conductivity.
EFFECT: increased efficiency of sampling of oil reservoirs opened with drilling, also in abnormal boreholes.
8 cl, 6 dwg
FIELD: oil and gas industry.
SUBSTANCE: method includes taking of a downhole sample by a sampler and its transportation to the surface. At that at the surface the sealed sampled chamber is set in different positions under vertical angles less than 180 degrees and measurements of the fluid are made by primary detectors installed inside the chamber on the surface of a dividing piston; then content of the downhole sample is analysed and calculated.
EFFECT: checkout of parameters for the total downhole sample, acquisition of reliable data on the fluid, creation of cost-effective control method.
FIELD: oil and gas industry.
SUBSTANCE: method and tool that implements the method involving the measurement of viscosities and flow rates of fluid media of the formation and obtainment of the ratio of relative permeabilities of formation fluid media and formation wetting ability using those viscosities and flow rates of the formation fluid media.
EFFECT: testing of bottom-hole formation for determination of relative permeability under bottom-hole conditions.
18 cl, 5 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention relates to the method and system for obtaining characteristics of the composition gradients and fluid medium properties of the involved header, and analysis of the header properties based on such gradients.
EFFECT: improvement of the device.
20 cl, 3 dwg
FIELD: oil-and-gas industry.
SUBSTANCE: invention relates to sampling of deep wells. Proposed device comprises suction-type sample intake chamber with separation piston, check valve and check valve seat, ballast chamber with pressure regulator, sample pressurisation mechanism with compressed gas chamber, pressurisation fluid chamber and pressurisation piston, control and data exchange module, sample input channel and valve. Said sample pressurisation mechanism is arranged between sample intake chamber and ballast chamber, and equipped with uncoupler with piston and holder. Note here that sample intake chamber is provided with extra moving piston with check valve.
EFFECT: simplified sample pressurisation mechanism.
FIELD: oil and gas production.
SUBSTANCE: proposed sampler consists of fluid sampling system. Said system includes fluid sample taking and keeping valve, logical hydroelectric system for sampler locking and unlocking in well. Said system comprises motor connected to pump coupled with first distributor via first check valve, filter, safety valve and second distributor connected to tank, fluid sample taking and keeping valve, first, second and third pressure transducers. Note also that first distributor is connected to head ends of first, second and third hydraulic cylinders. Rod end of the latter are connected to third distributor connected with throttle and accumulator with fifth pressure transducer. In compliance with this invention, added fluid sampling rate control system comprises storage chamber connected with sixth check valve, fourth hydraulic cylinder via seventh check valve and proportional fluid flow rate regulator while sampling valve is connected with second, third, fourth, fifth and sixth check valves. Note also that fourth hydraulic cylinder, proportional flow rate regulator, fourth and fifth check valves are connected with the tank.
EFFECT: controlled fluid sampling rate, higher efficiency and quality.
FIELD: oil and gas industry.
SUBSTANCE: there created is a device and method of measuring the parameters characterising the rock bed in oil well with device for probe field generation in the rock bed zone and device that generates the flow through the zone in presence of probe field additionally including sensors sensitive to changes in the zone, note that sensor response indicates the values of fluid quantity and changes in hydrocarbons phases in the bed. The changes can be performed before the flow influences the measurement zone and after the flow appearance through the measurement zone.
EFFECT: advancement and improvement of devices and methods of defining the bed characteristics with the use of the flow created in the bed.
25 cl, 5 dwg
SUBSTANCE: bed gas pressure gradient is measured in a payout bed of a well. A depth sample of bed gas is taken from this payout bed. Density of bed gas is determined according to the pressure gradient, as well as its weight in the selected sample according to sampler's volume. The depth sample is processed to release gas components from it. Using the produced processing data, weight of components in the taken sample is identified. Based on the difference of weights referred to volume of gas components it is decided on content of condensate in bed gas.
EFFECT: improved accuracy of survey.
3 cl, 1 tbl, 2 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