CN108952702A - Underground thick oil sampler - Google Patents
Underground thick oil sampler Download PDFInfo
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- CN108952702A CN108952702A CN201811001569.4A CN201811001569A CN108952702A CN 108952702 A CN108952702 A CN 108952702A CN 201811001569 A CN201811001569 A CN 201811001569A CN 108952702 A CN108952702 A CN 108952702A
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- sample
- lead screw
- thick oil
- oil sampler
- cylinder
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- 239000012530 fluid Substances 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 238000002347 injection Methods 0.000 claims abstract description 13
- 239000007924 injection Substances 0.000 claims abstract description 13
- 238000012546 transfer Methods 0.000 claims description 41
- 238000005070 sampling Methods 0.000 claims description 24
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 239000000523 sample Substances 0.000 description 163
- 239000003921 oil Substances 0.000 description 20
- 238000004891 communication Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 102100036285 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Human genes 0.000 description 2
- 101000875403 Homo sapiens 25-hydroxyvitamin D-1 alpha hydroxylase, mitochondrial Proteins 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229960004424 carbon dioxide Drugs 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013068 control sample Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000006101 laboratory sample Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003909 pattern recognition Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 plunger 6 Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention provides a kind of underground thick oil sampler, its sample cylinder holds well fluid samples, head end connector is axially arranged with sample holes, the axial direction that control is shorted has central bore, it is lateral that there are four injection ports, the upper section for controlling the central bore being shorted installs lead screw, lower section installs sealed plunger, the upper end of lead screw is connected to micromotor, micromotor is under the control of circuit module, lead screw is driven to rotate forward or backwards, lead screw is just, counter-rotating belts dynamic sealing plunger moves up and down, when lead screw rotates forward, sealed plunger is moved upward to extreme position, upper surface of its lower end surface far from sample holes, fluid sample passes through four injection ports at this time, the sample holes enter the inner cavity of sample cylinder, when lead screw rotates backward, sealed plunger is then moved downward to extreme position, close the fluid sample in sample cylinder.The underground thick oil sampler principle is novel, and unique structure, the operation is stable is easy to operate, and difficulty of processing is small, cost is low, safety and environmental protection, remarkable benefit.
Description
Technical field
The present invention relates to oil gas field formation fluid high pressure property experimental technique field, especially relate under a kind of heavy oil wells
Sampler.
Background technique
The experiment of formation fluid high pressure property needs pressurized fluid samples under production wells, and used well sampling device mainly has
Scraped wall sampler, mechanical watch formula sampler and electronic clock formula sampler are all the sides using upper and lower valve closing sample cylinder
Formula, basic functional principle are that sample cylinder opens upper and lower valve, opening decentralization to underground set depth, borehole fluid on ground in advance
Since in sample cylinder upper and lower ends, that there are flowing pressures is poor, a part can enter from lower mouth across sampler barrel, outflow suitable for reading, constantly
Displacement updates, and simultaneously closes off when trigger mechanism controls upper and lower valve, this section of fluid is just closed in sample cylinder, finally proposes ground
It send to high pressure physical property experiment room and analyzes in face.The problem is that flow resistance increases, sample cylinder when borehole fluid viscosity is larger
The flowing pressure difference at both ends is not enough to pass through sample cylinder and establishes flowing, and the fluid sample obtained in this way is not setting underground depth
Representational fluid sample, underproof sample can not obtain correctly analysis result；Even if in addition underground successfully samples,
There are still problem, saturated brine displacing fluid and viscosity of thickened oil ratios during fluid sample is transferred to High-Voltage Experimentation kettle in by sample cylinder
Greatly, easily there is water breakthrough phenomenon, the viscous crude sample effective displacement in sample cylinder cannot be shifted, lead to experimental analysis sample size not
Foot, once or even displacing fluid be mixed into sample, will cause laboratory sample and scrap.Therefore, although this kind of through type well sampling device
Structure is simple, low in cost, but can not be applied to heavy oil wells, especially carbon dioxide flooding oil reservoir, and crude oil lightweight component is by two
The case where viscosity increases after carbonoxide extraction, underground PVT sampling and ground sample transfer are very difficult.We have invented a kind of new thus
Underground thick oil sampler, solve the above technical problem.
Summary of the invention
The object of the present invention is to provide one kind to efficiently solve low viscous crude sampling success rate and sample transfer sample carryover and pollution
Problem underground thick oil sampler.
The purpose of the present invention can be achieved by the following technical measures: underground thick oil sampler, the viscous crude well sampling
Device includes that sample cylinder, head end connector, control short circuit, sealed plunger, lead screw, micromotor and circuit module, the sample cylinder hold well
Interior fluid sample, the head end connector are axially arranged with sample holes, and the lower end of the head end connector is connected to the sample cylinder, upper end is connected to this
Control is shorted, the axial direction which is shorted have central bore, the lateral central bore being shorted there are four injection port, the control it is upper
Section installs the lead screw, and lower section installs the sealed plunger, and the upper end of the lead screw is connected to the micromotor, which is connected to
The circuit module, and under the control of the circuit module, drive the lead screw to rotate forward or backwards, forward and reverse turn of the lead screw
Dynamic that the sealed plunger is driven to move up and down, when which rotates forward, which is moved upward to extreme position, lower end
Upper surface of the face far from the sample holes, fluid sample enters the sample cylinder by four injection ports, the sample holes at this time
Inner cavity, when which rotates backward, which is then moved downward to extreme position, closes the fluid sample in the sample cylinder.
The purpose of the present invention can be also achieved by the following technical measures:
The sealed plunger is equipped with central through hole and minimizes and move down thereon to balance the pressure difference of its upper and lower side
Dynamic resistance has trapezoidal internal thread to connect with the lead screw in the central through hole, which is shorted solid by thrust bearing and the control
It is fixed, realize that the lead screw axial-rotation drives the sealed plunger to move up and down, the lead screw is close by sealing ring and the control shorting contact
Envelope, the upper section of the sealed plunger are smooth seal cylinder, are installed between the central bore wall that the sealing cylinder and the control are shorted
There are two seals groove in sealing ring, the lower end of the sealed plunger and install rubber seal, and the middle section of the sealed plunger is axial double
Side is equipped with location fin, is limited, is not able to rotate by positioning sleeve.
The head end connector is laterally symmetrically arranged with sample transfer mouth and needle-valve, the external high pressure line of sample transfer mouth, for before sampling
Sample tube inner chamber is vacuumized, fluid sample sample transfer is discharged after sampling, the needle-valve is for closing the sample transfer mouth, the valve of the needle-valve
The diameter of bar is much smaller than the diameter of the sample holes, does not constitute the obstruction to sample holes.
The underground thick oil sampler further includes end connector, which is mounted on the lower end of the sample cylinder, lateral
It is connected to equipped with pressurizing valve and interface with the inner cavity of the sample cylinder, the external high pressure line of the interface, for being injected when sample transfer after sampling
High pressure displacing fluid, the pressurizing valve is for closing the interface.
The underground thick oil sampler further includes travelling plunger, which is located at caudal end in the sample cylinder, in the sample
It slides axially in cylinder and contact sealing with the inner wall of the sample cylinder, from the interface of the end connector injection high pressure displacing fluid when sample transfer
The travelling plunger is driven to be moved to head end from the tail end of the sample cylinder, which drives the fluid sample in the sample cylinder from this turn
Sample mouth is all discharged.
The underground thick oil sampler further includes Bearing housing, Hall sensor and skeleton, the internal screw thread which is shorted
The Bearing housing is connected, which installs the Hall sensor, which is socketed on the Bearing housing, should
Circuit module and the micromotor are fixedly mounted on the skeleton.
The circuit module uses single-chip microcontroller PIC16F688, single-chip microcontroller PIC16F688 to pass through the external Hall sensor
The end HR is to the miniature electrical machinery axle rotation counting.
The underground thick oil sampler further includes no magnet coupler and cylindricality magnet steel, and the upper end of the lead screw is by this without magnetic shaft coupling
The rotation axis connection of device and the micromotor, without magnet coupler side, laterally the corresponding Hall sensor installs the cylindrical magnetic for this
Steel.
The underground thick oil sampler further includes battery pack and battery sleeve, and the upper external screw thread which is shorted is tightly connected
The battery sleeve, the battery pack are located at upper space in the battery sleeve and connect with the circuit module, miniature with this for the circuit module
Motor provides power supply.
It is on and off that underground thick oil sampler of the invention uses electronic clock accurately to control sample cylinder, it is easy to accomplish
Setting underground depth is sampled；Sealed plunger is designed using central through hole, is capable of the pressure of active balance sealed plunger both ends of the surface
Difference, making motor only needs very little torsion that sample cylinder is on and off；Utilize the principle of high pressure outside vacuum in cylinder and cylinder, it is ensured that high
Viscosity fluid can also be full of sample cylinder；Travelling plunger displacement sample transfer is added in sample cylinder, efficiently solves viscous crude sample transfer sample carryover
With the problem of pollution.The underground thick oil sampler principle is novel, and unique structure, the operation is stable is easy to operate, difficulty of processing
It is small, cost is low, safety and environmental protection, remarkable benefit.
Detailed description of the invention
Fig. 1 is the structure chart of a specific embodiment of underground thick oil sampler of the invention；
Fig. 2 is the circuit diagram of underground thick oil sampler internal circuit blocks in a specific embodiment of the invention；
Fig. 3 is circuit module operational flow diagram in a specific embodiment of the invention；
Fig. 4 is ground sample transfer experiment flow figure in a specific embodiment of the invention.
In Fig. 1: 1, sample cylinder, 2, head end connector, 3, end connector, 4, travelling plunger, 5, control short circuit, 6, sealed plunger,
7, lead screw, 8, micromotor, 9, circuit module, 10, battery sleeve, 11, pressurizing valve, 12, interface, 13, sample transfer mouth, 14, needle-valve,
15, thrust bearing, 16, Bearing housing, 17, sealing ring, 18, positioning sleeve, 19, skeleton, 20, sealing ring, 21, screw, 22, sample introduction
Mouthful, 23, sample holes, 24, central through hole, 25, strainer, 26, Hall sensor, 27, screw, 28, battery pack, 29, without magnetic shaft coupling
Device, 30, motor shaft, 31, magnet steel.
In Fig. 4: 401, sample cylinder, 402, heating mantle, 403, sample transfer pump, 404, High-Voltage Experimentation kettle, 405, pressure gauge, 406, into
Sample valve, 407, ground sample transfer platform, 408, high pressure line, 409, high pressure line, 410, travelling plunger, 411, pressurizing valve, 412, connect
Mouthful, 413, sample transfer mouth, 414, needle-valve, 415, relief valve.
Specific embodiment
To enable above and other objects, features and advantages of the invention to be clearer and more comprehensible, preferably implementation is cited below particularly out
Example, and cooperate shown in attached drawing, it is described in detail below.
As shown in FIG. 1, FIG. 1 is the structure charts of underground thick oil sampler of the invention.
The underground thick oil sampler by sample cylinder 1, head end connector 2, end connector 3, travelling plunger 4, control be shorted 5, it is close
Seal the composition such as plunger 6, lead screw 7 and micromotor 8, circuit module 9, battery sleeve 10.Sample cylinder 1 is the round metal of inner wall smooth
Cylinder, inside and outside are able to bear high temperature and high pressure, 1 both ends of sample cylinder are threadedly coupled with head end connector 2, end connector 3 respectively, with
Seal with elastometic washer constitutes closed inner cavity for holding well fluid samples, travelling plunger 4 and is located at tail end limit position in sample cylinder 1
It sets, can slide axially in sample cylinder 1 and contacts sealing with the inner wall of sample cylinder 1.Head end connector 2 is axially arranged with sample holes 23 simultaneously
Hold on it is expanding be equipped with sealing surface, head end connector 2 it is laterally symmetric be equipped with sample transfer mouth 13 and needle-valve 14, the valve rod of needle-valve 14 it is straight
Diameter is much smaller than the diameter of sample holes 23, and it is preceding to sample for sampling not constitute the obstruction to sample holes 23, sample transfer mouth 13 and needle-valve 14
Cylinder 1 vacuumizes and produces after sampling fluid sample, and other time needle-valve 14 closes sample transfer mouth 13.3 side of end connector to be equipped with plus
Pressure valve 11 and interface 12 are connected to the inner cavity of sample cylinder 1, and pressurizing valve 11 and interface 12 are used to inject high pressure displacing fluid when sample transfer, usually
11 down interface 12 of pressurizing valve, the lower end of end connector 3 have screw thread for connecting starting taper or other tools of going into the well.Head end connector 2
Upper end is shorted 5 with control and is threadedly coupled and is locked by screw 21, control be shorted 5 it is axial have central bore, it is lateral there are four injection port
22, the top thin diameter section that control is shorted 5 central bores installs lead screw 7, and lead screw 7 is axial solid by thrust bearing 15 and Bearing housing 16
It is fixed and sealing is kept in contact with the shell that sealing ring 20 and control are shorted 5, lead screw 7 upwardly through no magnet coupler 29 with it is miniature
The rotation axis 30 of motor connects, and the lower section of lead screw 7 is equipped with trapezoidal external screw thread, and control is shorted the lower part wide section peace of 5 central bores
Sealed plunger 6 is filled, sealed plunger 6 is equipped with central through hole 24 and has trapezoidal internal thread to connect with lead screw 7, the upper section of sealed plunger 6
For smooth seal cylinder, above-mentioned sealing cylinder and control are shorted between 5 inner hole walls and install sealing ring 17, the lower section of sealed plunger 6
There is two seals groove and rubber seal is installed, the middle section axial direction bilateral of sealed plunger 6 is equipped with location fin, by positioning sleeve 18
It limits, be not able to rotate, the forward and reverse rotation of lead screw 7 then drives sealed plunger 6 to move up and down, and control is shorted the connection of 5 upper end internal screw threads
Bearing housing 16, skeleton 19 are socketed on Bearing housing 16 and are fixed by multiple screws 27, and micromotor 8 and circuit module 9 are solid
On skeleton 19,16 lateral opening hole of Bearing housing installs Hall sensor 26 for Dingan County, and corresponding Hall sensor 26 joins in no magnetic
The side of axis device 29 is horizontally installed with cylindricality magnet steel 31, and control is shorted 5 upper external screw threads and is tightly connected battery sleeve 10, battery pack 28
Upper space is connect with circuit module 9 in battery sleeve 10.Battery pack 28 is that circuit module 9 and micromotor 8 are powered, circuit
Module 9 executes the forward and reverse rotation of preset program reed time controll micromotor 8 and is monitored by Hall sensor 26 without magnet coupler
29 rotation situation, micromotor 8 drive the forward and reverse rotation of lead screw 7 to driving sealed plunger 6 to move up and down, when lead screw 7 just
To rotation, sealed plunger 6 is then move upwardly until extreme position, upper surface of the lower end surface far from sample holes 23, at this time sample
Fluid enters the inner cavity of sample cylinder 1 by injection port 22, sample holes 23；When lead screw 7 rotates backward, sealed plunger 6 is then to moving down
It moves to extreme position, the sealed groove and sealing ring of lower section are fully inserted into the expanding sealing surface of 23 upper section of sample holes, close sample
Pressurized fluid samples in cylinder 1.The central through hole 24 of above-mentioned sealed plunger 6 is very necessary, and central through hole 24 is to balanced seal
The pressure difference of 6 upper and lower side of plunger, since the threaded connection of sealed plunger 6 and lead screw 7 is there are gap, sealed plunger 6 it is upper
It is communicated between end face and lower end surface, if there is elevated pressures act on the single-ended end face of sealed plunger 6 then sealed plunger 6
It is difficult to move axially, the pressure difference of 6 upper and lower side of sealed plunger is balanced just because of the presence of central through hole 24, high pressure is not in well
Larger resistance can be generated on the cross section of sealed plunger 6, only need lesser torque that can drive 6 axis of sealed plunger on lead screw 7
To movement.
The circuit theory of foregoing circuit module is as shown in Fig. 2, battery pack or communication interface pass through socket CN6 and circuit mould
The internal wiring of block is attached, and battery anode 12v output end VDD VDD1 after diode D0 is micromotor power supply,
VDD1 is single-chip microcontroller U1 (PIC16F688) and Hall sensor through voltage stabilizing circuit module U5 (TPS76350) 5v output VCC
(89s31) power supply, the inside single-chip microcontroller U1 are equipped with the functions such as timing, storage, operation, interface, and com interface (RX, TX) is by inserting
Seat CN6 and host computer communication carry out program setting, export control level, control in control terminal k1, k2 according to preset program timing
The forward and reverse rotation of micromotor or stopping, when k1 high level k2 low level, field-effect tube M2M3 conducting, M1M4 cut-off are micro-
Type motor rotate forward, when k1 low level k2 high level, field-effect tube M1M4 conducting, M2M3 cut-off, micromotor reversion, when k1,
Micromotor stops operating when k2 is all high storage battery or low level, high-power limit of connecting over the ground in micromotor supply access
Leakage resistance R7, single-chip microcontroller U1 by the end the AD_VIN voltage of current-limiting resistance R7 perceive micromotor whether stall, single-chip microcontroller U1 is logical
The end HR of external Hall sensor is crossed to motor shaft rotation counting, single-chip microcontroller U1 is electricity by the identification socket CN6 connection of the end LED
Pond group or communication interface.The flow chart of the single-chip microcontroller U1 plug-in of foregoing circuit module is as shown in figure 3, after the starting that is powered first
It carries out pattern-recognition to establish signal if being detected as communication mode with host computer and connect, passes through host computer setting " unlatching etc.
To " time and " continue sample introduction " two delay parameters of time if detecting connection battery pack i.e. operating mode enter and " open
Open waiting " delay, starting motor rotates forward after delay parameter counts down, and persistently records turnning circle and detects whether that motor is stifled
Turn, when reaching design circle number or motor rotation blockage, determines that sealed plunger fully opens sample holes, motor stalling " is held by preset
Continuous sample introduction " time delays, sample introduction are completed, and motor reversal is started, and are persistently recorded turnning circle and are detected whether motor rotation blockage, when reaching
To design circle number or motor rotation blockage, determine that sealed plunger completely closes sample holes, motor stalling, EP (end of program).
Underground thick oil sampler of the invention mainly includes sample cylinder, head end connector, end connector, travelling plunger, control
Short circuit, sealed plunger, lead screw, micromotor and circuit module, the sample cylinder hold well fluid samples, both ends respectively with head end
Connector and end connector are tightly connected, and need to vacuumize closed sample tube inner chamber before sampling of going into the well, which axially sets
There are sample holes, head end upper end of joint connects control short circuit, and the axial direction which is shorted has central bore, laterally there are four sample introductions
Mouthful, the upper section for the central bore which is shorted installs the lead screw, and lower section installs the sealed plunger, and lead screw and sealed plunger are by ladder
Shape is threadedly coupled, which is connected to the micromotor, which is connected to the circuit module, and in the circuit mould
Under the control of block, the lead screw is driven to rotate forward or backwards, the forward and reverse rotation of the lead screw drives and moves down on the sealed plunger
Dynamic, when which rotates forward, which is moved upward to extreme position, upper end of the lower end surface far from the sample holes
Face, opens sample holes, and fluid sample enters in the sample cylinder vacuumized in advance by four injection ports, the sample holes
Chamber, when which rotates backward, which is then moved downward to extreme position, closes sample holes, closes in the sample cylinder
Fluid sample.The head end connector is laterally symmetrically arranged with needle-valve and sample transfer mouth, is turned after sample tube inner chamber is vacuumized, sampled before sampling
The channel of fluid sample out；The travelling plunger is placed in caudal end in the sample cylinder, can slide axially in the sample cylinder and with sample cylinder
Inner wall contact sealing；The end connector is being connected to being laterally equipped with pressurizing valve and interface with the sample tube inner chamber, and when sample transfer is connect by this
The external high pressure line of mouth and sample transfer pump, injection high pressure displacing fluid drive the travelling plunger to slide into head end from the sample cylinder tail end, should
Travelling plunger is driven fluid sample and is all discharged from above-mentioned sample transfer mouth.Its course of work is that sealed plunger downlink is closed before sampling
Sample holes, close needle-valve after vacuumizing from inner cavity of the sample transfer mouth to sample cylinder, circuit module programs, is powered, going into the well to purpose depth；
Circuit module timing controlled motor rotates forward, and driving sealed plunger uplink opens sample holes, and high-pressure fluid pours in sample holes very in well
Fast to set motor reversal after delay full of the sample tube inner chamber vacuumized in advance, sealed plunger downlink closes sample holes closing
Pressurized fluid samples in sample cylinder；High pressure displacing fluid is injected from the interface of end connector after well out, drives travelling plunger from sample cylinder tail
End slides into head end, drives sample fluid from sample transfer mouth and is all expelled to sample transfer container.
The operation of underground thick oil sampler of the invention is divided into sampling preparation, three well sampling, ground sample transfer steps.
One, sampling prepares
According to completion all parts assembling (except battery sleeve, battery pack) shown in attached drawing 1, pay attention to that sealed plunger 6 is allowed to be in
Lower limit position closes sample holes 23, and the plunger 4 that will move about is placed in the tail end of sample cylinder 1, after first vacuumizing from 12 connecting pipeline of interface
Pressurizing valve 11 is closed, then closes needle-valve 14 after vacuumizing from 13 connecting pipeline of sample transfer mouth, the pipeline vacuumized is removed, screws in interface
Screw is protected, the plunger 4 that moves about at this time is located at the caudal end of sample cylinder 1, all sealing spaces in the sample cylinder 1 of two sides above and below travelling plunger
And the gap of sample holes 23, central through hole 24, sealed plunger 6 and lead screw 7 is all in vacuum state.Host computer is connected, according to
Arrangement and method for construction carries out program setting to the circuit module of apparatus of the present invention, and time and " continuing sample introduction " time " are opened and wait " in setting
Two delay parameters.
Two, well sampling
Battery pack, installation battery sleeve are connected before going into the well, and are transferred apparatus of the present invention to well using equipment such as winch wires
Predetermined depth.As shown in Fig. 1, after " open and wait " delay of apparatus of the present invention circuit module setting, motor forward direction turns
Dynamic circuit is connected, and motor transmission shaft drives lead screw 7 to rotate forward by shaft coupling, the driving of lead screw 76 uplink of sealed plunger open into
Sample channel 23, sample fluid enters 1 inner cavity of sample cylinder by injection port 22, strainer 25, sample intake passage 23 in well, and process is preset
" continuing sample introduction " time delays, 1 inner cavity of sample cylinder is completely filled with sample fluid, while sample fluid is full of spiral shell by central through hole 24
Pressure balance is born in the upper and lower end face of line and lead screw upper gap, sealed plunger 6, and then motor rotates backward, motor transmission shaft
Lead screw 7 is driven to rotate backward by shaft coupling, lead screw 7 drives 6 downlink of sealed plunger to close sample intake passage 23, and well sampling is complete
At.Subsequent apparatus of the present invention are taken out to ground, and pressurized fluid samples are closed in the confined space in sample cylinder 1.Circuit mould
Block installs Hall sensor and motor rotation blockage detection function, not only can guarantee that sealed plunger 6 can drive in place, but also protect motor not
Overload damage.Travelling plunger 4 is still located at the end-position of sample cylinder 1 after the completion of sampling.
Three, ground sample transfer
As shown in figure 4, apparatus of the present invention are integrally fixed on ground sample transfer platform 407, external second high pressure of sample transfer mouth 413
Pipeline 409 is connected to High-Voltage Experimentation kettle 404, and external first high pressure line 408 of interface 412 is connected to sample transfer pump 403.Open heating
Set 402 heats, constant temperature to sample point temperature, constantly waves sample cylinder 401 in heating process, keeps the sample fluid in sample cylinder 401 equal
Temperature and pressure state of the even recovery into stratum.Needle-valve 414, pressurizing valve 411 are opened, starting sample transfer pump 403 is slowly suppressed, pressed
The indicating value of power table 405 steadily increases and then is basically stable at certain value, and displacing fluid enters sample cylinder 1 through high pressure line 408, interface 412
Lower end driving travelling 410 upward sliding of plunger, travelling plunger 410 drive the sample fluid in sample cylinder 401 through sample transfer mouth 413, height
Pressure pipeline 409 is transferred in High-Voltage Experimentation kettle 404.When 405 indicating value of pressure gauge suddenly rises, the plunger 410 that illustrates to move about has been moved
To the upper end extreme position of sample cylinder 401, sampling valve 406 is closed, sample transfer is completed.Subsequent each sealing position of disassembly, cleans remaining sample
Product fluid replaces sealing element, in case next sampling work.
Claims (9)
1. underground thick oil sampler, which is characterized in that the underground thick oil sampler include sample cylinder, head end connector, control it is short
Connect, sealed plunger, lead screw, micromotor and circuit module, the sample cylinder hold well fluid samples, which is axially arranged with
Sample holes, the lower end of the head end connector is connected to the sample cylinder, upper end is connected to control short circuit, and the axial direction which is shorted has
Intracardiac hole, the lateral central bore being shorted there are four injection port, the control upper section the lead screw is installed, lower section installs the sealing column
Plug, the upper end of the lead screw are connected to the micromotor, which is connected to the circuit module, and in the control of the circuit module
Under system, the lead screw is driven to rotate forward or backwards, the forward and reverse rotation of the lead screw drives the sealed plunger to move up and down, the silk
When thick stick rotates forward, which is moved upward to extreme position, and upper surface of the lower end surface far from the sample holes is flowed at this time
Body sample enters the inner cavity of the sample cylinder, when which rotates backward, the sealing column by four injection ports, the sample holes
Plug is then moved downward to extreme position, closes the fluid sample in the sample cylinder.
2. underground thick oil sampler according to claim 1, which is characterized in that the sealed plunger is equipped with central through hole,
To balance the pressure difference of its upper and lower side, minimizes its resistance moved up and down, there is trapezoidal interior spiral shell in the central through hole
Line is connect with the lead screw, which is shorted by thrust bearing and the control and is fixed, and realizes that the lead screw axial-rotation drives the sealing
Plunger moves up and down, which is sealed by sealing ring and the control shorting contact, and the upper section of the sealed plunger is smooth seal column
Sealing ring is installed between the central bore wall that face, the sealing cylinder and the control are shorted, the lower end of the sealed plunger there are twice
Sealed groove simultaneously installs rubber seal, and the middle section axial direction bilateral of the sealed plunger is equipped with location fin, is limited by positioning sleeve, no
It is able to rotate.
3. underground thick oil sampler according to claim 1, which is characterized in that the head end connector, which is laterally symmetrically arranged with, to be turned
Sample mouth and needle-valve, the external high pressure line of sample transfer mouth, for being vacuumized before sampling to sample tube inner chamber, after sampling by fluid-like
The discharge of product sample transfer, the needle-valve are much smaller than the diameter of the sample holes for closing the sample transfer mouth, the diameter of the valve rod of the needle-valve, not structure
The obstruction of pairs of sample holes.
4. underground thick oil sampler according to claim 3, which is characterized in that the underground thick oil sampler further includes
End connector, the end connector are mounted on the lower end of the sample cylinder, connect in the inner cavity laterally equipped with pressurizing valve and interface and the sample cylinder
Logical, the external high pressure line of the interface, for injecting high pressure displacing fluid when sample transfer after sampling, which connects for closing this
Mouthful.
5. underground thick oil sampler according to claim 4, which is characterized in that the underground thick oil sampler further includes
Move about plunger, which is located at caudal end in the sample cylinder, slides axially in the sample cylinder and contact with the inner wall of the sample cylinder
Sealing drives the travelling plunger mobile from the tail end of the sample cylinder when sample transfer from the interface of end connector injection high pressure displacing fluid
To head end, which drives the fluid sample in the sample cylinder and is all discharged from the sample transfer mouth.
6. underground thick oil sampler according to claim 1, which is characterized in that the underground thick oil sampler further includes
Bearing housing, Hall sensor and skeleton, the internal screw thread which is shorted connect the Bearing housing, the Bearing housing lateral opening hole
The Hall sensor is installed, which is socketed on the Bearing housing, and the circuit module and the micromotor are fixedly mounted on this
On skeleton.
7. underground thick oil sampler according to claim 6, which is characterized in that the circuit module uses single-chip microcontroller
PIC16F688, single-chip microcontroller PIC16F688 are by the end HR of the external Hall sensor to the miniature electrical machinery axle rotation counting.
8. underground thick oil sampler according to claim 6, which is characterized in that the underground thick oil sampler further includes
Without magnet coupler and cylindricality magnet steel, the upper end of the lead screw is by the rotation axis connection without magnet coupler Yu the micromotor, the nothing
Laterally the corresponding Hall sensor installs the cylindricality magnet steel for magnet coupler side.
9. underground thick oil sampler according to claim 1, which is characterized in that the underground thick oil sampler further includes
Battery pack and battery sleeve, the upper external screw thread which is shorted are tightly connected the battery sleeve, which is located in the battery sleeve
Upper space is connect with the circuit module, provides power supply for the circuit module and the micromotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001569.4A CN108952702B (en) | 2018-08-30 | 2018-08-30 | Underground sampling device for thickened oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811001569.4A CN108952702B (en) | 2018-08-30 | 2018-08-30 | Underground sampling device for thickened oil |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108952702A true CN108952702A (en) | 2018-12-07 |
| CN108952702B CN108952702B (en) | 2024-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811001569.4A Active CN108952702B (en) | 2018-08-30 | 2018-08-30 | Underground sampling device for thickened oil |
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| Country | Link |
|---|---|
| CN (1) | CN108952702B (en) |
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| CN113309516A (en) * | 2020-02-26 | 2021-08-27 | 中国石油天然气股份有限公司 | Downhole sampling apparatus and method |
| CN113532938A (en) * | 2020-09-24 | 2021-10-22 | 中国地质科学院岩溶地质研究所 | Deep hole in-situ sampling equipment |
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Also Published As
| Publication number | Publication date |
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| CN108952702B (en) | 2024-04-16 |
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