Well sampler with micro-sampling chamber and application method thereof
FIELD: petroleum industry.
SUBSTANCE: invention relates to investigations of subsurface samples of fluids and particularly, to taking aliquot subsurface microsamples of formation fluids for conducting in-situ express analysis. The well device contains the sampling tank and several microsampling chambers. Microsampling chambers may have at least one window for input of energy of visible emission, emissions in the near and middle fields of the infrared range and energy of other kinds of electromagnetic emission into the tank for samples collected in the microsampling chamber, in the well or downhole. Such window can be made of sapphire or another material transparent for electromagnetic emission. Besides the whole microsampling chamber can be made of sapphire or other material transparent for electromagnetic emission with a possibility of visual control or analysis of samples in the microsampling chamber. The microsampling chamber makes it possible to immediately analyse a sample obtained in situ, on the surface to determine the quality of the sample contained in the main sampling tank or to make thorough analysis of the same.
EFFECT: increased sampling capacity and express analysis of samples, more accurate determination of the parameters of the sample.
30 cl, 8 dwg
The technical field to which the invention relates.
The present invention relates to research in-depth sampling of fluids and, in particular, to obtain aliquot deep microprobe fluids for carrying out rapid on-site analysis of the sample to determine the quality of the deep samples.
The level of technology
Reservoir fluids in oil and gas wells are typically a mixture of oil, gas and water. Phase mixing ratio is determined by pressure, temperature and volume of reservoir fluids. In underground rocks high pressure well fluid often causes the absorption of gas oil with the formation of supersaturated solutions. With decreasing pressure absorbed or dissolved gaseous compounds are distinguished from the liquid phase of the sample. Accurate measurements of pressure, temperature and composition of the formation fluid from a particular well affect the assessment of the economic feasibility of producing fluids from a well. These data also provide information on ways to maximize the effectiveness of the completion and development of the corresponding reservoir hydrocarbons.
The number of known methods of analysis of well fluids in the well environment. In the patent US 6467544 (Brown and others) described the sampling chamber with a movable piston bounding a cavity, in which the Oh is the sample on one side of the piston and the buffer cavity. In the patent US 5361839 (Griffith and others, 1993) revealed the transmitter to signal characterizing the properties of the sample fluid in the well environment. In the patent US 5329811 (Schultz and others, 1994) described a device and method of assessment data for pressure and volume for the deep sample of the downhole fluid.
Other methods include sampling well fluid to release it to the surface. In the patent US 4583595 (Czenichow and others, 1986) the mechanism of reciprocating drive for assaying downhole fluid. In the patent US 4721157 (Berzin, 1988) described the sliding valve sleeve to be concluded in the camera sample of the downhole fluid. In the patent US 4766955 (Petermann, 1988) described the piston that interacts with a valve for sampling well fluid, and in the patent US 4903765 (Zunkel, 1990) - downhole sampler with time delay. In the patent US 5009100 (Gruber and others, 1991) described the descent on the cable sampler for sampling well fluid from the well to the desired depth. In the patent US 5240072 (Schultz and others, 1993) describes triggered on annular pressure sampler multiple steps for selection of the deep samples of well fluids at different points in time and at different depths, and in the patent US 5322120 (Be and others, 1994) disclosed an electro-hydraulic system for sampling well fluid from STV is as well at great depths.
In deep wells the temperature often exceed 300°F. When removing hot samples of formation fluids to the surface, where the temperature is about 70°F, due to the temperature drop of the sample formation fluid tends to shrink in size. If the volume of the sample remains constant, this reduction leads to a significant decrease of the pressure of the sample. The pressure drop leads to changes of the parameters inherent in Plast fluid in natural (in situ) groundwater, which can cause phase separation of liquids and gases absorbed break of the formation fluid. Phase separation entails a significant change in the characteristics of the formation fluid and reduces the real possibility of assessment of real properties of the formation fluid.
To overcome this drawback, various techniques have been developed aimed at maintaining samples of formation fluids under pressure. In the patent US 5337822 (Massie and others, 1994) the pressure in the sample formation fluid is supported by a piston with a hydraulic actuator driven by compressed high-pressure gas. Similarly, in patent US 5662166 (Shammai, 1997) to compress the sample formation fluid is gas under pressure. In patents US 5303775 (1994) and US 5377755 (Michaels and others, 1995) revealed piston pump double acting to increase the pressure in the sample reservoir fluid is to the value exceeding the saturation pressure, so that the subsequent cooling does not lead to reduction of pressure of fluid below the saturation pressure.
Usually the containers are in their samples (selected capacity) is transported in the laboratory, where they analyze the samples to determine properties of the formation fluid. Samples normally have to move in a shipping container that is associated with the risk of damage to the sample due to the pressure drop accompanied by the formation of bubbles or loss in a sample of asphaltenes. Moreover, even if the sample is successfully delivered to the laboratory, usually on the results of its full laboratory analysis takes weeks and even months. There is therefore a need in the accelerated system analysis (proximate analysis) of the samples, which would give accurate results, eliminating the risk of damage to the sample.
Summary of the invention
The present invention is directed to overcoming the above described disadvantages of the prior art. In accordance with the present invention it is proposed to use sampling tank, or container, for sampling from wells, as well as several micropropagating cameras (under macroprolactinemia cameras understood miniaturization sampling chamber for microprobe). Microprojectile camera can have at least one the cat to enter energy visible radiation, radiation in the near and middle regions of the infrared (IR) range and energy of other types of electromagnetic radiation in a container for samples collected in micropropagating the camera in a well or pit. This window may be made of sapphire or other material capable of transmitting electromagnetic radiation. In addition, microprolactinoma camera can be entirely made of sapphire or other material capable of transmitting electromagnetic radiation with the possibility of visual inspection or analysis of the sample inside microprolactinomas camera. Microprolactinoma camera allows the surface to immediately investigate the extracted sample on the site of the well to determine the quality of the samples, which were mainly of the sampling reservoir, or to subject the sample to a comprehensive study.
The sample reservoir and microprojectile camera fill, pumping them in wireline fluid, with a piston loaded by hydrostatic pressure, creating a back pressure. In the sample reservoir and micropropagating cameras create excessive pressure using a pressure source, such as a pump or a charge of compressed gas to raise the pressure in the sample to a level above the saturation pressure, in order to avoid undesirable pressure drop. Microprojectile to what measures can be extracted on the surface for immediate research holistic samples inside microprolactinomas camera, by means of optical analysis or fasten micropropagating the camera on the test bench and to pump the sample from microprolactinomas camera test bench for analysis by the method of gas chromatography. To the pressure in microprobe guaranteed to exceed the saturation pressure, you can use a pressure source for loading samples in microprolactinomas chamber pressure of water. The viscosity of the sample inside microprolactinoma tank can be determined by weighing the empty microprolactinoma tank and re-weighing, when he filled a break, allowing you to determine the weight of the sample inside microprolactinomas chamber of known volume.
Brief description of drawings
Below the invention is illustrated by the example of its implementation with reference to the accompanying drawings in which the same structural elements denoted by the same positions and in which is shown:
figure 1 - schematic geological cross-section of the strata of rocks, illustrating the environment in which it is expected the implementation of the invention,
figure 2 - schematic representation proposed in the invention of the device in Assembly with auxiliary tools
figure 3 - schematic view of embodiment of the complete system for the boron and shipping samples of formation fluids,
figure 4 - image execution options microprolactinomas camera
figure 5 is a more detailed picture is presented on figure 4 options for performing microprolactinomas chambers with non-return valve and drain line,
figure 6 - image module placement microprobe detached from the downhole tool for the analysis of microsamples,
figure 7 - illustration of a known analysis techniques, and
on Fig - illustration of the new advanced analysis techniques provided by the present invention.
Description of the preferred variant of the invention
Figure 1 is a schematic geological cross-section thickness of 10 breeds in length were drilled in her hole 11. Typically, the well is at least partially filled with a mixture of liquids, including water, drilling mud and formation fluids flowing into the well from open borehole rocks. In this description such mixtures are referred to by the term "downhole fluids". The notion of "wireline fluid" is used below in respect of fluid from a particular layer not containing impurities and not contaminated liquids, which in this layer in a natural way not found.
In the well 11 is lowered, the sampler 20 is suspended on the lower end of the cable 12. The cable 12 is typically passed through a pulley 13 mounted on the drill rig 14. Descent and ascent cable is produced using the winch, installed, for example, on a truck with 15 equipment for maintenance.
Figure 2 schematically shows an embodiment of the proposed invention in the sampler 20. In this embodiment, the workbench sampler represent a layout with several located in a number of sections, which are connected to the ends of the threaded bushings 23 compression couplings. The composition of such a composition may include a hydraulic power unit 21 unit 22 selection of the fluid. Lower unit 22 selection of the fluid is pumping unit 24 volume type with a large working volume, intended for flushing hydraulic lines. Below the pump with a large displacement is similar to the pump unit 25 volume type with a smaller displacement of which is controlled in quantitative terms, as explained more with reference to figure 3. Usually under the pump a smaller volume are arranged one or several sections 26 of tank storage for the samples of fluid. Each section 26 may include three or more reservoir storage for 30 samples of fluid.
Unit 22 sampling fluid contains retractable receiving the probe 27 and on the opposite side from his hand - paws 28 to rest on the borehole wall. As the receiving probe 27 and the opposite with the pile of legs 28 are nominated by the hydraulic drive, coming into tight contact with the borehole wall. Design and principle of operation of the unit 22 for selecting the fluid described in detail in US patent 5303775, the contents of which are included in this description.
As shown in figure 4, the main sampling chamber 414 communicates with microprolactinomas chamber 510 through the hydraulic line 410. Wireline fluid is fed into the input channel 412 of the pump 25. The plunger 416 on the one hand and hydrostatic pressure applied through the opening 420 extending into the well. Accordingly, a sample of formation fluid pumped into the main sample chamber and microprojectile camera 510, overcoming summed up from the well hydrostatic pressure. Increasing the amount of fluid injected into the sample chamber 414, the volume of the sampling chamber 414, the volume of micropropagating cameras 510 increases. Luggage 418 charged with nitrogen, the pressure of which will impinge on the opposite side of the piston 416, as soon as the piston is moving down, will rest against the connecting rod 449. The charge of gaseous nitrogen pressurizes the sample contained in the sampling chamber 414 and micropropagating chambers 510.
In the chamber 422 is fed to the hydrostatic pressure acting on the bottom of the piston 416, resulting in the injection process, the sample fluid into the core sample chamber and acropomatidae chamber the pressure of the sample exceeds the hydrostatic pressure. The modules 400 host microprobe (hereinafter microrobotic) accommodated in the housing 440, from which it can be retrieved for inspection and analysis of sample inside microprolactinomas camera 510.
Figure 5 in more detail, the present design microprolactinoma 400. The opening of the valve or valve 516 connects the main sampling chamber 414 and microprojectile camera 510. Microprojectile camera 510 is equipped with podavlyayushee pistons 441, which operates downhole hydrostatic pressure applied through the opening 522. Thus, wireline fluid is pumped into the sample hydraulic line 410 in terms of back pressure side loaded hydrostatic pressure piston 441 in micropropagating chambers 510 and piston 416 in the main sample chamber 414.
Microrobotic 400 before descending into the well weighed in empty condition and re-weighed when full breakdown of the fluid to determine the sample weight. Knowing the amount of microprolactinomas camera 510 can determine the density of the sample fluid inside microprolactinomas camera 510, by dividing the weight (mass) to volume. The density of the sample fluid can determine its viscosity.
From the hydraulic line 410 wireline fluid enters micropaleontology chamber 510 through the check valve 520. Return the first valve 520 allows Plast fluid to pass into the sample chamber, but hinders its exit therefrom, unless the check valve is not open rod 612, shown in Fig.6.
Valve 516 is closed after the sample will fill microprojectile camera 510 and the main sampling chamber 414 and the corresponding pistons and 416 441 drops to a stop, causing the volume of the sample chambers will be maximum. After closing the valve 516 is opened drain line 512 to release any pressure in the hydraulic line 410 between the valve 516 and the check valve 520. After grazing pressure microrobotic 400 can be retrieved, viventis threaded connection 532 of the housing 518 device that allows you to expose the sample contained in microprolactinomas chamber 510 inside microprolactinoma 400 visual inspection and analysis.
Microrobotic 400 may be made of metal with Windows made of a material such as sapphire, which enables visual inspection and optical analysis of the content microprolactinomas camera. In addition, microrobotic 400 or wall 401 of its body, surrounding micropaleontology camera 510 may be entirely made of a material such as sapphire, which enables visual inspection and optical analysis of the content microprolactinomas camera.
As the show is but 6, to the hole 522 is possible to connect the water pump to supply pressure to the underside of the piston 441 microprolactinoma to create excess pressure acting on the sample in micropropagating the camera 510, during migration microsamples in a test device, such as a gas chromatograph 600. Microrobotic screwed into the test stand 600, in this case the rod 612 opens the check valve 520, allowing the sample inside the chamber 510, go into the test stand 600. The water pressure created by the pump 610, holds the sample under pressure, preventing evaporation of the sample in microprolactinomas chamber 510 during migration on the test stand.
In the present embodiment, microprolactinomas camera has one or more optical fibers, which in this embodiment are designed for high pressure sapphire Windows 530, which transmits electromagnetic radiation in micropropagating camera 510 and producing it from there with the optical analysis of the sample of formation fluid to determine the parameters of interest of the fluid. Microprolactinoma camera can be entirely made of sapphire or other material capable of transmitting electromagnetic radiation, which allows you to inspect the contents microprolactinomas camera and hold it non-destructive range of the local analysis or the analysis of a different type. You can use the Windows are made not only of transparent corundum, but also of other materials.
When working on the surface, as shown in Fig.6, microrobotic extracted from the body of the sampler. For non-destructive analysis on the surface of the external optical analyzer 620 containing the source of radiation in the near and/or middle region of the IR range, the ultraviolet range or the source of visible light, and spectrometers. The optical analyzer 620 contains a source of radiation in the near and/or middle region of the IR range, and the corresponding photodetector for analyzing transmission, fluorescence and frustrated total internal reflection (Attenuated Total Reflectance) of light. Thus excluded as the intervention in a sample fluid, and the need to transfer samples into another chamber, certified by the Ministry of transport for delivery to the analytical laboratory, located at a distance from the place of receipt of the sample.
In this embodiment, an external optical analyzer 620 scans the sample fluid by radiation in the wavelength range from 1500 to 2000 nm for the determination or estimation using software modeling techniques, such desired parameters, as the percentage of impurities, gas factor, density and pressure drop of asphaltenes. For the spectral the analysis of the sample fluid analysis module 620 is also provided with a tunable diode laser and a Raman spectrometer (Raman) scattering. All light sources and sensors are placed inside microprolactinomas camera 510 or related to the internal volume microprolactinomas camera through the optical vent window 530 or equivalent fiber, ensuring the passage of signals or electromagnetic radiation inside the sample container and the contained sample and exit back out.
Some of the many advantages of the present invention are revealed when comparing Fig.7, reflecting the level of technology, and Fig, which illustrates a new way and constructive solution of the underlying promising optical analyzer, which is implemented in the present invention. As shown in Fig that the results of calculations of basic parameters, carried out by optical studies (block 1114), can be obtained immediately or in less than six hours, and the final report of PVT studies (block 1132) - less than a week and not six to eight weeks, as it is shown in Fig.7. for the prior art. The advantage of the above method and device is no need to transfer samples from one container to another, because the research of parameters of pressure, volume, temperature (PVT properties and spectral analysis to determine the conditions of precipitation of asphaltenes, the saturation point, volumetric coefficient is ecient fluid in reservoir conditions and component composition, as well as others discussed above types of research are ground or underlying equipment non-destructive analysis in the external equipment or apparatus 620.
In another embodiment of the proposed invention in a method and apparatus are implemented in a set running on the computer commands, stored on a machine-readable data carrier, which may be represented by read-only memory (ROM), random access memory device (RAM), compact disk (CD-ROM), flash memory or any other machine-readable media, known or unknown at the present time that, when executed on the computer allow it to perform computer functions provided by the present invention.
The implementation of the invention was described above on the example of his particular options, but experts should be obvious possibility of carrying out the invention and in other modified versions. It is assumed that any such changes fall under patent claims set forth in the accompanying claims. Examples of the most important features of the invention have been presented in a rather generalized form, in order to assess their contribution to the prior art. There are, of course, additional features of the invention disclosed in the accompanying formula izobreteny is.
1. Downhole tool for determining the parameter of interest of a sample fluid containing (a) the main sampling chamber, b) micropaleontology camera built inside the hole with the main sample chamber and the breakdown of the fluid, the sample chamber contains the first part of the sample fluid, and microprolactinoma Luggage contains the second part of the sample fluid and is arranged to move from the main sample chamber and determining the parameter of interest for the second part of the sample fluid in micropropagating the camera to determine the parameter of interest for the first part of the sample fluid in the main sample chamber, and C) the analyzer associated with microprolactinomas chamber for holding downhole analysis of the sample fluid.
2. The device according to claim 1, in which microprolactinoma the camera has a known weight and volume to determine the density of the fluid.
3. The device according to claim 1, in which microprolactinoma Luggage entirely made of material that transmits to it the energy of electromagnetic radiation for the analysis of samples in micropropagating the camera.
4. The device according to claim 1, containing also the source of pressure to maintain the pressure acting on the fluid in microprolactinomas chamber during removal of the device from the well.
5. The device according to claim 1, in which the analyzer contains, IU the greater extent, one of the tools group, including tunable diode laser, a source of infrared radiation and an infrared detector and spectrometer Raman scattering for analysis of the sample fluid.
6. The device according to claim 5, containing the piston microprolactinomas camera, creating a back pressure acting on the fluid from the pump for sampling, during injection of the sample fluid in micropropagating the camera.
7. The device according to claim 1, containing means to supply water pressure to create excess pressure acting on the sample in micropropagating the camera, after its extraction from the well.
8. The device according to claim 1, containing a check valve to allow fluid in micropropagating chamber and prevents the exit of fluid from microprolactinomas camera, and installed with the possibility of removal from microprolactinomas camera.
9. The device of claim 8 containing valve for isolation microprolactinomas camera and the main sampling chamber.
10. The device according to claim 9, containing the drainage line to bleed pressure between microprolactinomas camera and the main sampling chamber.
11. The device according to claim 1, in which microprolactinoma Luggage basically entirely made of a material allowing visual inspection of the sample inside microprolactinomas camera.
12. The device according to claim 1, in which microprobe the boric camera made from material, allowing for the optical analysis of the sample inside microprolactinomas camera.
13. The device according to claim 1, in which microprolactinoma Luggage made with the possibility of extraction from the device for analysis of a sample surface using an external analytical equipment.
14. The device according to claim 1, in which microprolactinoma camera configured to generate samples to conduct its analysis on the surface.
15. The method of determining the parameter of interest of the sample fluid, in which
a) fill in the main sample chamber and micropropagating the camera, telling them with a sample fluid and placing the first portion of the sample fluid in the main sample chamber and the second part of the sample fluid in microprolactinomas chamber communicating inside of the well with the main sampling chamber,
b) move micropropagating the camera from the main sample chamber, and
C) analyze the second part of the sample fluid in micropropagating the camera through the analyzer associated with microprolactinomas camera to determine the parameter of interest for the first part of the sample fluid in the main sample chamber.
16. The method according to clause 15, which in the analysis of the second part of the sample fluid is weighed micropaleontology chamber containing the second part of the sample fluid, to define the individual weight of the second part of the sample fluid in microprolactinomas camera subtracting the empty weight microprolactinomas camera from weight microprolactinomas chamber containing the second part of the sample fluid, and determine at least one parameter from the group including density and viscosity of the fluid, based on the weight of the fluid and the volume of the sample chamber containing the fluid.
17. The method according to item 15, in which microprolactinoma Luggage are made entirely of material transparent to electromagnetic radiation, for sample analysis in micropropagating the camera.
18. The method according to clause 15, which at the time of extraction of the device from the well through a source of pressure support pressure acting on the second part of the sample fluid in micropropagating the camera.
19. The method according to item 15, in which the sample microprolactinomas camera podavlyayut, affecting her hydrostatic pressure.
20. The method according to clause 15, which at the time of injection of the sample fluid in micropropagating the camera creates a back pressure acting on the second part of the sample fluid.
21. The method according to item 15, in which, after extraction from the wells of the sample microprolactinomas the camera load pressure.
22. The method according to item 15, in which the fluid is let into micropropagating the chamber via a check valve which prevents the exit of fluid from microprolactinomas camera and mounted with the possibility of extraction of m is reprobating camera.
23. The method according to item 15, in which micropropagating the camera and the main sampling chamber divide through the valve.
24. The method according to item 23, which release the pressure between microprolactinomas camera and the main sampling chamber.
25. The method according to item 15, in which a sample of fluid inside microprolactinomas camera is subjected to a visual inspection.
26. The method according to item 15, in which the second part of the sample fluid inside microprolactinomas camera is subjected to optical analysis.
27. The method according to item 15, in which the extract micropropagating the camera from the device and analyze the second part of the sample fluid within microprolactinomas camera on the surface using an external analytical equipment to determine the properties of the first portion of the sample fluid within the main sample chamber.
28. The method according to item 15, in which the extract micropropagating the camera to analyze the second part of the sample fluid on the surface using an external analytical equipment to determine the parameter of interest for the first part of the sample fluid within the main sample chamber.
29. Downhole tool for determining the parameter of interest of the sample fluid containing the main sampling chamber inside the device for placing the first part of the sample fluid, micropaleontology camera for RA is a mix of the second part of the sample fluid, built inside the hole with the main sample chamber and the breakdown of the fluid and configured to move from the main sample chamber and the analyzer associated with microprolactinomas camera for analysis of the sample fluid.
30. Downhole tool for determining the parameter of interest of a sample fluid containing (a) the main sampling chamber inside the device, receiving the first portion of the sample fluid, b) micropropagating the camera chamber connected with the main sample chamber receiving a second portion of the sample fluid simultaneously with the reception of the main sample chamber of the first part of the sample fluid and is arranged to move from the main sample chamber, and the second part of the sample fluid can be extracted from microprolactinomas camera without interfering with the first part of the sample fluid in the main sample chamber, and
C) an analyzer associated with microprolactinomas camera for analysis of the sample fluid.
02.05.2003 - all claims.
SUBSTANCE: invention relates to determination of various well characteristics in the underground formation, through which the borehole passes. For this purpose a pressure drop is created due to the difference between the internal pressure of fluid that passes through the drilling tools and pressure in the circular space in the borehole. The device contains an extension arm that can be connected with the drilling tools and has an opening that enters into the chamber in the extension arm. A piston is located in the chamber with a rod passing through the opening. The piston can move from the closed position when the rod blocks the opening to the open position when the rod is retracted into the chamber to form a cavity for intake of well fluid. A sensor is located inside the rod, which is intended for data collection from the well fluid contained in the cavity.
EFFECT: increase of accuracy of determination of well characteristics.
34 dwg, 9 dwg
FIELD: method and sensor for gas monitoring in well environment.
SUBSTANCE: method involves providing infrared light-emitting diode in well; transmitting corresponding infrared signals to the first optical path extending from the diode through well gas sample and the second optical path extending from the diode through gas sample; detecting transmitted infrared signals and determining concentration of component in well gas sample from detected signals. The first optical path is free of liquid.
EFFECT: increased accuracy of gas monitoring.
36 cl, 4 ex, 19 dwg
FIELD: equipment for reservoir gas presence in drilling mud flow passing via well during well drilling.
SUBSTANCE: device comprises at least on sensing chamber to be connected to drilling string for well drilling. Each sensing chamber contains taken gas volume and comprises membrane wall for reservoir gas penetration from drilling mud flow in sensing chamber. Sensor provides determination of said gas volume characteristics change caused by reservoir gas penetration from drilling mud flow in sensing chamber through membrane wall.
EFFECT: increased reliability and accuracy of gas detection.
16 cl, 4 dwg
FIELD: in-situ or remote measurement and analysis of drilling mud, completion fluid, completion fluid, industrial solutions and reservoir fluids.
SUBSTANCE: method involves taking liquid samples from predetermined liquid sample taking points where drilling mud, completion fluid, completion fluid, industrial solutions and reservoir fluid flow or are stored; introducing the samples in chemical analyzing microfluid system linked to computer device; performing one or several selected tests in said microfluid device with the use of test result detecting and data creation means; converting said data with analytic test results obtaining; monitoring said results to control selected parameters of drilling operation, reservoir penetration and operation.
EFFECT: decreased amount of sample and test reagents.
12 cl, 3 ex, 3 tbl, 5 dwg
FIELD: oil and gas production, particularly equipment for oil and gas property investigation under reservoir conditions.
SUBSTANCE: plant comprises piston container with plug and transfer unit, which moves sample from piston container into measuring press including two piston pumps having equal capacities. One piston pump delivers sample from piston container, another one lowers floating piston in measuring press. Measuring press is provided with floating piston having hollow shaft, ultrasonic linear displacement sensor for oil volume determination and electronic linear displacement sensor for gas volume determination. Circulation piston pump provides unidirectional oil circulation at controllable rate. Viscosimeter has bypass with shutoff valve. Single thermostating shell encloses all components of the plant.
EFFECT: increased accuracy of oil and gas volume and viscosity determination, decreased sample characteristic measurement time under reservoir conditions and, as a result, increased operational efficiency.
FIELD: oil and gas industry, particularly obtaining fluid samples or testing fluids in pipelines.
SUBSTANCE: device comprises pipeline, body made as connection pipe with hollow shaft and cock. Hollow shaft is fixedly connected to pipeline in air-tight manner and is made as connection pipe with beveled end and radial orifices facing liquid flow made in shaft side opposite to that provided with beveled end. Pipeline has restriction located downstream of the shaft. Another end of connection pipe is air-tightly connected to pipeline downstream of the restriction and located in decreased pressure zone. Connection pipe section defined by cock and the second end is provided with cylindrical case with piston, which may slide in axial direction with respect to the case. The case has discharge connection pipe arranged from cock side. The piston comprises valve providing liquid flow from the cock side. The cock is made as a cylinder with electromagnet and shaft air-tightly installed in the cylinder and sliding with respect to the cylinder in axial direction by means of electromagnet. Cylinder has outlet connection pipe and is communicated with discharge connection pipe. Both connection pipes are closed with shaft. The shaft has two annular grooves. The first groove may communicate connection pipe with cylinder to seal the connection pipe as shaft moves inside the cylinder. The second groove may communicate outlet and discharge connection pipes as shaft slides inside the cylinder.
EFFECT: increased sample taking quality.
FIELD: oil and gas industry, in particular, engineering of devices for integration sample taking of paraffin containing water-oil emulsions from pipelines.
SUBSTANCE: sample taker includes body mounted on pipeline, in the socket of which spindle is mounted with possible progressive movement along thread, valve positioned on spindle head, interacting with saddle, sample-taking pipe, mounted in threaded socket of body below saddle. Round rod, connected to valve, is coaxially positioned inside sample-taking pipe. Metallic plates for removing paraffin sedimentations are mounted on the rod. Sample-taking pipe is made with longitudinal slit recess facing the liquid stream.
EFFECT: increased efficiency.
FIELD: oil production, particularly devices to perform reservoir tests in wells, including that having opened bores.
SUBSTANCE: device comprises upper connection unit for device fixation on pipe string, upper and lower packers with sealing members, upper and lower movable rods provided with axial channels arranged inside packers and hollow filter installed between upper and lower packers. Axial channel of lower movable rod is provided with solid partition. Upper and lower movable rods are fixedly connected with each other in air-tight manner and provided with upper connection unit. Upper and lower rods may be displaced only in downward direction with respect to upper and lower packers. Sealing members of upper and lower packers are located between stops. Upper stop of lower packer is fixedly connected with lower stop of upper packer provided with balloon-type centrators through hollow filter. The balloon-type centrators are arranged from top thereof. One stop of each packer is made as hydraulic cylinder fixedly connected with packer and as annular piston cooperating with sealing member. Inner cavities of each hydraulic cylinder may cooperate with axial channels of movable rods over solid partition and may provide air-tight isolation thereof during movable rod displacement in downward direction with respect to packers. Upper movable rod is provided with radial channel sealed with packer and adapted to cooperate with ambient space through hollow filter during movable rods displacement in downward direction with respect to packers.
EFFECT: simplified structure, decreased costs of device production and increased operational reliability.
FIELD: hydro-geological well research, in particular, engineering of equipment for taking liquid samples from wells of various level depths.
SUBSTANCE: device includes rod with diaphragms in form of plugs, cylinder-shaped body with drain ports. Body is mounted on external side of upper diaphragm with possible longitudinal movement relatively to the rod. From above body is provided with hydraulic chamber with a wall. Hydraulic chamber from above is connected to pipes column. Piston, spring-loaded from below and hermetically enveloping the rod, is mounted inside hydraulic chamber. Circular recesses narrowing towards the top are made on external surface of rod above diaphragms, with distance between them equal to distance between diaphragms. Analogical circular recesses, narrowing towards bottom and equipped with stopper rings, are made on internal surface of wall and piston. Stopper rings are made with possible interaction with circular recesses of rod. From below the body is equipped with tail piece with longitudinal side channels. From below hydraulic chamber is equipped with technological apertures.
EFFECT: increased reliability and division quality of samples taken.
FIELD: oil and gas industry, possible use for taking samples of liquid from pipelines.
SUBSTANCE: device contains main pipeline, sample-taking section, fastened to main pipeline with possible extraction of sample with enveloping of transverse cross-section of liquid flow without losses, draining valve and manometer. Sample-taking section at input of liquid flow inside the main pipeline is provided with branch pipe with radial apertures, positioned in front of liquid flow with inclined upper end. Cut of inclined end is positioned on the side of branch pipe opposite to radial apertures. Device, narrowing the flow, is mounted behind branch pipe in main pipeline. Draining valve is made in form of core slide valve, spring-loaded relatively to sample-taking section, body with draining aperture and coil. Core slide valve is hermetically mounted inside the body and made of dielectric material. Coil is positioned on external surface of body. In original position core slide valve hermetically covers draining port of body. In working position core slide valve under effect of electromagnetic field, created by coil, is capable of axial movement inside the body.
EFFECT: simplified construction, increased durability.
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