Implosion device on cable for inspection of oil and gas well layers
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
The invention relates to hydrodynamic studies of oil and gas wells and can be used to study the physical properties of their beds.
The closest to the proposed device is a device containing an Electromechanical actuator, a sampler of implosion chamber, a packer module, spool hub, the pressure sensor of the reservoir and the temperature sensor (patent RF №2199009, IPC EV 49/00, publ. 2003.02.20).
The disadvantages of this device are the design complexity and low reliability due to the presence of multiple shear elements. In addition, in the process of research and sampling is not controlled by the quality of insulation of the reservoir interval packer module, in a single run takes only one sample, taken from the first portion of the liquid received in the implosion chamber, and investigated only two parameters - pressure and temperature of the fluid. There is no quality control sampling for the presence of hydrocarbons and water samples collected notoriously poor. This reduces the accuracy of the study of hydrodynamic characteristics of the formations of oil and gas wells.
The objective of the invention is to improve the accuracy of the study of the hydrodynamic characteristics of the formations of oil and gas wells and improving the quality of sampling place the new fluids at different(Oh) intervals (depth) due to the exclusion of influence of the well fluid on the results of the study and sampling.
The problem is solved in that the apparatus includes an Electromechanical actuator, a sampler of implosion chamber, a packer module, spool hub, the pressure sensor reservoir, located under the packer module and the temperature sensor is further provided with a moisture meter, resistivity meter, module prosobonia, an additional pressure sensor located above the packer module, and emergency boss to capture and retrieval apparatus in emergency situations, above the implosion of the camera, when the spool Assembly is provided with valves and is located above the module prosobonia switchable flow of samples to the implosion chamber located in the upper part of the device, and the module prosobonia through the sampler, which contains the differential pistons, and the sampler and implosion chamber is connected with the near-wellbore area through the vertical channel, which has a moisture meter, resistivity meter, pressure sensor reservoir and the temperature sensor.
Figure 1 shows the diagram of the inventive device.
The device includes a housing 1, a hollow stem 2, which is the actuator 3 thrust 4, valves 5 and 6, the spool site 7, located at the end of the hollow rod 2, the hydraulic booster 8, shear washer 9, a piston 10, the sampler 11, a differential piston 12, soobsheni the through channel 13 to the well, probability 14, communicated through radial channels 15 with the cavity And the sampler 11, packer module, consisting of two packers 16 and 17, each of which consists of a fixed 18 and 19 rolling flanges, rubber cuff 20 hard and soft 21 located on the outer surface of the housing 1, the plunger 22 rigidly mounted on the hollow shaft 2, channel 23, which tells the sampler 11 through valves 5 and 6, with well implosion chamber 24 connected through the channel 25 and the valves 5 and 6, with well Electromechanical actuator 26 by screws 27, rigidly fixed to the shaft 2, the emergency site, consisting of a casing 28, adjustably mounted on a Electromechanical actuator 26, shear washer 29, the stop 30, the vertical channel 31 which is connected with the hydraulic booster 8, pressure sensors 32, 33, 34 and the temperature sensor 35, the hygrometer 36, resistivity meter 37, the cable 38, which is conductive and the load-carrying element of the device, the remote control 39 control and receive information from sensors 32, 33, 34, 35, 36, 37, emergency lug 40 to capture and retrieval of the device in case of emergency situations, the cavity B, formed between thrust 4 and the hollow shaft 2, the cavity, where the atmospheric pressure, and the cavity G, where high pressure (liquid filled), the mount 41 of the cable 38 to the housing 1.
The device works in the following way (figure 2).
The implosion device to study the reservoir is in oil and gas wells on the cable 38 is lowered into the borehole to the desired depth and fix packer module 16, 17 on the roof of the studied reservoir. For this to remote control and receive information 39 serves current straight polarity, the motor 26. The screw 27 is moved upward together with the hollow shaft 2, the plunger 22 correspondingly moves upward the movable flange 19, a rubber cuff 20 and 21 are deformed and increase in cross-section, since they are limited on the other side of the fixed flange 18, reach the borehole wall (rock) and isolate the annular space of the well between the casing 1, the barrel (breed) and packers 16, 17. The motor 3 serves current straight polarity, and the rod 4 together with the valve 5 is moved up. The channels 23 and 25 are connected with each other. The fluid in the isolated annular space B, rushes in implosion chamber 24, where the pressure is atmospheric, clay crust formed on the barrel wall (rock), is destroyed, and the reservoir fluids are in implosion chamber 24. At this time, the pressure sensor 34 detects a pressure drop in the channel 23, it means the beginning of the study and sampling. 15-20 to stop the flow of fluids in the implosion chamber 24, to which the actuator 3 serves a current of reverse polarity, rod 4 together with the valves 5 and 6 moves down and closes the channels 23 and 25. The temperature sensor 35 measures the temperature of the reservoir fluid throughout the process of research. The sensor 34 detects pressure, then measure the fractional composition and content of hydrocarbons with sensors 36 and 37, the testimony is fixed on the panel 39. The sensors 32 and 33 fixed pressure in the well above and below the packer module in the process of research and sampling. In an unpressurized landing packer 16 or when there is hydraulic connection of the isolated section of the formation to the well (through the cracks) sensor 32 indicates a pressure decrease, and if the packer 17 is planted negerlein or there is a hydraulic connection pedacinho area well insulated space B through the bottomhole formation zone, the sensor 33 shows the decrease in pressure. Then again open the channels 23 and 25 with electric drive 3 with the purpose of the formation fluids in the implosion chamber 24, and then measure the fractional composition and the content of hydrocarbons in them and the pressure of the reservoir through sensors, respectively, 36, 37, 34. Positive dynamics in the evidence sample is taken in probobally 14. For this purpose, the motor 3 serves a current of reverse polarity, rod 4 moves the valves 5 and 6 up, the channel 23 is opened and the channel 25 is closed, and the reservoir fluids through the channel 23 and the space B is held in the cavity And the sampler 11, a differential piston 12 moves up speed as its completion, as it weighs g grotticelle pressure of the well through the channel 13, at the same time, the sensor 34 measures the pressure of the reservoir dynamics in the sampling process. After you restore reservoir pressure (based on sensor readings 34) the collected sample is sent to probobally 14. For this purpose Electromechanical actuator 26 serves a current of reverse polarity, the screw 27 is moved down together with the hollow shaft 2, the spool node 7 goes down and opens the radial channel 15, reservoir fluids from the cavity And the sampler 11 flow into probobally 14 where the pressure is less than the reservoir, and fill it. When the movement of the hollow rod 2 down the plunger 22 with a movable flange 19 also moves downward, the rubber cuff 20 and 21 take the starting position. For examining and taking samples from the subsequent interval of the reservoir device is being pushed down by the value of h equal to the distance between the two packers 16 and 17, planted on the roof of the studied reservoir, and then all the operations are repeated. When abnormal, emergency situations, the capture device for emergency lug, located in the upper part, above the implosion of the camera, and then removed from the well.
In case of emergency in case of failure of the electric drive 3 or breaking of the cable 38 breakdown packer module or removing the entire apparatus is as follows.
Creates a force on the cable 38 with the mouth, shear washer 29 is destroyed, oguh 28 is moved upward relative to the housing 1 until it stops 30, the vertical channel 31 is communicated with the well cavity, while the hydrostatic well pressure acts on the hydraulic booster 8, which creates a high pressure in the cavity, Under this pressure, the piston 10 moves down and destroys the shear washer 9, the hollow body 1 is displaced by the distance L down together with the plunger 22, the rubber cuff 20 and 21 take the starting position, the packer module is plucked from the walls of the reservoir (figure 3), and the apparatus is removed upward from the well.
In the case when the machine caught the rock is extracted as follows.
Creates a force on the cable 38 from the wellhead, the apparatus when it is terminated at the location of the mount 41, further down the outer Rublevka on the tubing string or drill pipe. Rublevka captures the apparatus for the boss 40 and creation efforts aimed up, destroyed shear washer 9. The plunger 22, hard rubber cuff 20, rubber soft sleeve 21 together with a movable flange 19 are shifted down relative to the housing 1, the packer module is plucked from the walls of the reservoir, and the apparatus is removed from the well.
The proposed solution provides a qualitative study of the formation and capture of high-quality samples by excluding the effects of borehole fluid on the results of the study and samples. Samples taken at different sites do not mix with other the slaves twisted, that ensures the quality of the studied fluids. The design of the device allows for a single run of the device to carry out a study of the reservoir and the sampling manifold and to take as many samples as there are prosobonia in the module. The proposed device allows to investigate the dynamics of the fluid on the basis of which a conclusion is made about the intensity of the return oil from the reservoir, and to take samples. When using the proposed system reduces the time for tripping operations excluded because of repeated and multiple runs on the study of reservoirs and sampling that reduces costs, ensures the production of layers in a cost-effective mode. Provided high quality research and sampling, reflecting the true state of the reservoir, and high-quality operation of the reservoir.
1. The implosion device on the cable for the study of formations of oil and gas wells, comprising an Electromechanical actuator, a sampler of implosion chamber, a packer module, spool hub, the pressure sensor reservoir, located under the packer module and the temperature sensor, wherein the apparatus is further provided with a moisture meter, resistivity meter, module prosobonia and additional pressure sensor located above the packer and the adulam, when the spool Assembly is provided with valves and is located above the module prosobonia switchable flow of samples to the implosion chamber located in the upper part of the device, and the module prosobonia through the sampler, which contains the differential piston and the sampler and implosion chamber is connected with the near-wellbore area through the vertical channel, which has a moisture meter, resistivity meter, pressure sensor reservoir and the temperature sensor.
2. The implosion device on the cable for the study of formations of oil and gas wells according to claim 1, characterized in that it is equipped with an emergency boss to capture and retrieval apparatus in emergency situations, above the implosion chamber.
3. The implosion device on the cable for the study of formations of oil and gas wells according to claim 1, characterized in that the rubber seal packer module made with different hardness and elasticity.
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.
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.
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
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
SUBSTANCE: method consists in pumping-out fluid from rock with pump assembled in well and in measuring fluid pressure and volume during pumping out by means of sensors arranged in well. Also during pumping out the pumped out volume is registered, rate of fluid inflow is evaluated on the base of measurements of pressure and volume and such rate of fluid pumping out is set that facilitates flowing of fluid practically in one-phase state.
EFFECT: determination of quality and structure of stratum fluid.
24 cl, 20 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
FIELD: oil industry.
SUBSTANCE: device has hollow body which is a fragment of force pipeline at vertically placed portion of mouth armature. Tool for controlling flow of multi-component gas-liquid substance is made in form of valve, connected to rotary support. Sample chamber is a ring-shaped hollow in hollow body, placed at same level with valve and connected at inlet to flow of multi-component gas-liquid substance through extracting channels, made on hollow body. Extracting channels are made in form of side slits, positioned symmetrically relatively to valve rotation axis. Ring-shaped hollow on hollow body is connected at outlet to locking tool, mounted at extension of valve shaft and made in form of sample-taking valve. Valve shaft and sample-taking valve are interconnected through hollow intermediate shaft. Sample-taking valve is placed in the body of locking tool with possible reciprocal movement. Valve shaft and hollow intermediate shaft are interconnected with possible mutual rotation for a quarter of one turn.
EFFECT: simplified construction and maintenance, higher quality.
FIELD: oil and gas industry.
SUBSTANCE: device has body in form of calibrated cylinder. From both sides lids are connected to body. Inside the body separating piston and ball for mixing sample are placed. Also provided is hydraulic resistance for slow inlet of sample. Slide valve is used for safe inletting, pressurization and depressurization of taken fluid, is connected to lid and consists of rod with channels and bushing with clamp. Clamp is held between nuts interconnected by threads, one of which is connected to rod by thread. Needle valve consists of locking pin and axle-bearing and is used to drain pressure from closed space above slide valve prior to disconnection of sample-taking container from bed-testing equipment.
EFFECT: simplified construction, higher reliability.
FIELD: oil industry.
SUBSTANCE: device has hollow body mounted in force pipeline, inside of which body tool for controlling flow of multi-component gas-liquid substance is placed, probing chamber with extracting channels, locking tool with handle and guiding pipe, driving valve for picking sample, mounted with possible interaction with spring-loaded rod, placed inside the shaft of flow control tool. Hollow body is a fragment of force pipeline at vertical portion of mouth armature, control tool is made in form of valve of lesser diameter, then inner diameter of hollow body, and probing chamber is a ring-shaped hollow in hollow body, positioned at same level with valve and connected at input to flow of multi-component gas-liquid substance through extraction channels, made symmetrically to rotation axis of valve, and at output - to locking tool, while rod is provided with shelves for multi-start thread of appropriate cross-section, made at shaft on length of no less than quarter of axial step of this thread.
EFFECT: simplified construction, higher efficiency.
FIELD: oil industry.
SUBSTANCE: device has hollow cylindrical body, branch pipes for extraction and output of sample and locking element. Body is made thick-walled. End portions of body are made in form of truncated cone and interconnected, on the side of lesser bases by means of channel. Branch pipe for extraction of sample is made elongated, with length equal to body diameter, and is let through in transverse direction of body through the center of said channel. Within limits of branch pipe cross-section its hollow is separated by slanted solid wall on two portions, each of which is connected thereto. One portion of branch pipe hollow is meant for taking sample, other one - for feeding reagent into well product. To receive trustworthy information about sample, by setting flow to homogenous state, inner surface of cone, on the side of larger base, is provided with rigidly fixed blades for turbulization of flow flowing into body, while diameter of channel connecting cones is selected equal to diameters of their lesser bases.
EFFECT: simplified construction, broader functional capabilities, higher quality of sample.
2 cl, 3 dwg
FIELD: oil industry.
SUBSTANCE: hollow body of device is actually a fragment of force pipeline at mostly vertical portion of mouth armature. Organ for controlling flow of multi-component gas-liquid substance is made in form of valve mounted on shaft having lesser size, than inner diameter of hollow body. Sample chamber is in form of ring-shaped hollow on hollow body, positioned at same level with valve. Ring-shaped hollow is connected at input to flow of multi-component gas-liquid substance through intake channels, positioned symmetrically to valve rotation axis, and at output - with locking organ. Driving screw mounted on body of locking organ is connected to sample-taking valve with possible mutual rotation and combined axial displacement. Sample-taking valve and shaft with valve are mated with possible synchronous rotation around common axis and relative axial displacement. Working organs of device are positioned immediately near main flow of substance taken as sample to provide for lesser dimensions of device and prevented freezing in winter season.
EFFECT: simplified construction, simplified maintenance.
FIELD: oil production industry, particularly methods or devices for cementing, for plugging holes, crevices, or the like.
SUBSTANCE: device comprises inflatable packers to be lowered into well along with flow string. One flow string end is closed to provide simultaneous well bore packing, another end is connected to production equipment. Flow string is provided with centralizers located near inflatable packers. Formed in flow string are additional holes located opposite to packers. Well pump is installed inside flow string. High-pressure water conduit having low diameter is connected to above holes. Flow string has perforated orifices created between inflatable packers.
EFFECT: extended operational capabilities.
FIELD: oil-field equipment, particularly for obtaining fluid samples or testing fluids in boreholes or wells and may be used for integrated obtaining sample of multicomponent liquid-gas systems transported through pipelines.
SUBSTANCE: sampler comprises hollow body installed in high-pressure pipeline of wellhead fittings and extraction chamber with discharge channels. Rotary tool adapted for multicomponent liquid-gas medium flow regulation is installed inside the body. Sampler also has shutoff member with actuated sample extracting valve, handle and guiding tube. Sampler comprises hollow body made as a part of high-pressure pipeline and tool adapted for multicomponent liquid-gas medium flow regulation arranged in hollow body. The tool consists of flap installed on a shaft and having diameter corresponding to inner hollow body diameter, extraction chamber used to extract and mix multicomponent liquid-gas medium flow formed as annular cavity around hollow body. The cavity is divided into inlet and outlet parts by partition arranged at flap level. Inlet and outlet parts communicate with common multicomponent liquid-gas medium flow correspondingly through inlet and outlet channels on hollow body and through opening formed in the partition at sample extracting valve inlet. Drive screw installed in shutoff member body is connected with sample extracting valve so that drive screw and sample extracting valve may perform mutual rotation and move in axial direction. Sample extracting valve and shaft with flap mate each other so that they may perform synchronous limited rotation about common axis and mutual axial movement.
EFFECT: increased simplicity, provision of high-quality mixing of sample product and increased sample reliability.
FIELD: oil field equipment, particularly for take samples from wellhead, namely for integrated sampling multi-component gas-liquid medium transported through pipelines.
SUBSTANCE: device has hollow body built in pressure pipeline and formed as a part of the pipeline located on vertical part of wellhead fittings. Multi-component gas-liquid medium flow control unit is made as a gate connected to rotary support shaft. Sampling chamber is created as annular cavity arranged on hollow body at gate level. Sampling chamber inlet is communicated with multi-component gas-liquid medium flow through intake manifolds formed on hollow body. Intake manifolds are side slots arranged symmetrically about gate axis of rotation. Sampling chamber outlet is communicated with shutoff member installed on rotary gate support shaft extension. Shutoff member includes seat, hold-down screw and ball contacting with the seat and embedded in pressure screw end.
EFFECT: simplified structure and increased sampling quality.
FIELD: mining industry, particularly to take subsurface oil samples in running and exploratory wells working in flow mode.
SUBSTANCE: sampling device has tubular body with lock mechanism arranged inside the body and connected to controlling valve assembly from the first side and controllable valve assembly from the second side thereof. Joint relay is screwed on the controlling valve assembly. The controlling assembly is retained in its opened position by joint relay including body with orifices for pin receiving, pusher acting upon the controlling valve assembly and bush with fluid circulation orifices. Valve assemblies include all-rubber valves having 30° cone angles. The relay has barbs to engage with production string connector. When sampling device moves downwards the barbs are brought into folded state.
EFFECT: increased operational reliability and prevention of oil sample degassing due to improved air-tightness of sampling device interior.
2 cl, 1 dwg