CN107063752A - A kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure - Google Patents

A kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure Download PDF

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Publication number
CN107063752A
CN107063752A CN201710250326.3A CN201710250326A CN107063752A CN 107063752 A CN107063752 A CN 107063752A CN 201710250326 A CN201710250326 A CN 201710250326A CN 107063752 A CN107063752 A CN 107063752A
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CN
China
Prior art keywords
sampling
road
crude oil
adapter road
oil pipeline
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201710250326.3A
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Chinese (zh)
Inventor
张帆
户凯
张钰垚
王圣洁
刘凯
张雅琴
高乾
孟小雨
孟嘉岩
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China University of Petroleum Beijing
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China University of Petroleum Beijing
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Publication date
Application filed by China University of Petroleum Beijing filed Critical China University of Petroleum Beijing
Priority to CN201710250326.3A priority Critical patent/CN107063752A/en
Publication of CN107063752A publication Critical patent/CN107063752A/en
Withdrawn legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state

Abstract

The present invention relates to low viscosity crude oil pipeline conveying equipment technical field, more particularly to a kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure.In the tube sampler and sampling method of realizing the anti-shearing sampling of isothermal with pressure of the present invention, tube sampler includes the other adapter road being obliquely installed relative to horizontal line, the two ends on side adapter road respectively with the bottom of crude oil pipeline is to be opened/closed connects, for persistently being drawn out of crude oil pipeline and sealing fluid up for safekeeping;Seal up for safekeeping after fluid pressure release, when introducing a gas into other adapter road, the low viscosity fluid sealed up for safekeeping is taken over outside road by self gravitation effect outflow side;Sampling method is proposed based on the sampler.The sampler and sampling method can directly implement sampling with pressure, isothermal sampling and anti-shearing sampling in the case where not influenceing crude oil pipeline normally to convey technique, and without external force driving during sampling, have the advantages that sampling work amount is small, generation waste oil is few, simple in construction, sealed reliable.

Description

A kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure
Technical field
Realize that isothermal with pressure is anti-the present invention relates to low viscosity crude oil pipeline conveying equipment technical field, more particularly to one kind and cut Cut the tube sampler and sampling method of sample.
Background technology
The conveying of low viscosity crude oil safety economy is frequently with addition pour-point depressant modification treatment technology.Add pour-point depressant modified Periodic detection rheological characteristic of crude oil Parameters variation situation is needed in low viscosity Oil Transportation Process in Pipeline, it is therefore desirable in time from pipeline Middle acquisition oil sample carries out crude oil fluidity test, when crude oil modified field sampling is tested, by adding the modified original of pour-point depressant Oil is easily influenceed by shear action and temperature change.Therefore oil sample is should guard against by shear action and temperature in sampling process Spend the influence of change.
At present, existing crude sampler can't realize the anti-shearing sampling of isothermal with pressure well, and some samplers exist There is pressure difference during sampling inside and outside pipeline and do not reach the effect for eliminating shearing;Some samplers are needed in sampling process by circulation Pump, so sets and adds additional oil sample pump-shear effect;Although some samplers prevent the shadow of shear action in sampling process Ring, but can not fundamentally accomplish that isothermal is sampled, and the oil sample discharged every time can only add work as waste oil disposal Amount, also uneconomical, environmental protection.
In addition, existing sampler structure design is there is also defect, the cavity emptied during sampler descent of piston oil extraction It is interior to produce negative pressure, not only cause piston to continue to move to become difficult, and easily cause the sealing between piston and sampler inwall Part is damaged, and sampler is failed.
Above crude oil pipeline sampler is to have partially removed sampling effect factor, and the anti-shearing of isothermal with pressure is not reached and is taken The requirement of sample, the oil sample of taking-up can not truly reflect the actual flow behavior of crude oil in pipe, and have motion inside sampler Part, structure and sealing are complex.
The content of the invention
(1) technical problem to be solved
The technical problem to be solved in the present invention is to provide it is a kind of realize isothermal with pressure it is anti-shearing sampling tube sampler and Sampling method, can realize sampling with pressure, isothermal sampling and anti-shearing sampling, and without external force driving, structure letter during sampling It is single, sealed reliable.
(2) technical scheme
In order to solve the above-mentioned technical problem, the invention provides a kind of tubular type sampling for realizing the anti-shearing sampling of isothermal with pressure Device, including the other adapter road being obliquely installed relative to horizontal line, the bottom of the other two ends for taking over road respectively with crude oil pipeline Connection to be opened/closed, for persistently being drawn out of described crude oil pipeline and sealing fluid up for safekeeping;Introduce a gas into the other adapter road When, the fluid sealed up for safekeeping is taken over outside road by the self gravitation effect outflow side.
Further, aerial drainage intake valve and sampling valve are respectively arranged with the other adapter road, the aerial drainage intake valve is used In introducing a gas into other adapter road, the sampling valve is used to make to seal up for safekeeping in the other fluid release taken in road and flow out, The sampling valve is connected to the least significant end on other adapter road, and the aerial drainage intake valve is positioned above the position of the sampling valve.
Further, the entrance point on the other adapter road is positioned above the position of the port of export, the aerial drainage intake valve and Sampling valve is respectively arranged at the entrance point and the port of export on other adapter road.
Further, what the entrance point and port of export difference on the other adapter road were vertical is provided with inducer and outlet section, institute State inducer and outlet section to connect with crude oil pipeline respectively, the other adapter inclined bottom for being arranged on crude oil pipeline in road, and Connection is between the inducer and outlet section;The aerial drainage intake valve is connected on inducer.
Further, be respectively equipped with inlet control valve and discharge control valve on the inducer and outlet section, and it is described enter Mouth control valve and discharge control valve are separately positioned on close to the position of the crude oil pipeline.
Further, the aerial drainage intake valve level is connected on the inducer, and positioned at the inlet control valve Between tilting section.
Further, the bottom of the least significant end for being connected to the other adapter road of the sampling valve vertically.
Further, it is provided with pressure gauge on the other adapter road.
Further, it is provided with thermometer on the other adapter road.
Present invention also offers a kind of sampling method based on tube sampler as described above, this method includes following step Suddenly:
S1, tube sampler is placed in original state;
S2, one end that the side of the tube sampler is taken over into road are connected with the crude oil pipeline, the other end and the original Oil-piping is disconnected, and the fluid in the crude oil pipeline is unidirectionally introduced in other adapter road, and the gas that the side is taken in road Emptying;
S3, the two ends that the side is taken over into road are connected with crude oil pipeline, so that the fluid in the crude oil pipeline continues Flow into other adapter road, until the oil temperature and oil pressure in the other adapter road are equal with the oil temperature and oil pressure in crude oil pipeline;
S4, the other two ends for taking over road are disconnected with crude oil pipeline, so that the fluid in the other adapter road is sealed up for safekeeping;
S5, carry out release to sealing the fluid in the other adapter road up for safekeeping;
S6, introduce a gas into the other adapter road so that the fluid sealed up for safekeeping flowed out by self gravitation effect it is described Outside the adapter road of side.
(3) beneficial effect
The above-mentioned technical proposal of the present invention has the advantages that:
1st, the present invention can the direct sampling with pressure in the case where not influenceing crude oil pipeline normally to convey technique;
2nd, the present invention continues to flow through sampler using crude oil, reaches the purpose of preheating (cold) sampler, and pass through thermometer Monitor whether to reach that temperature is identical, realize that isothermal is sampled, without manually operating during oil stream preheating (cold) sampler, reduction takes Sample workload;
3rd, it can implement to unload press operation by the control to sampling valve in sampling process of the present invention, and can be monitored by pressure gauge Whether abundant release, it is to avoid oil sample by shear action so that complete it is anti-shearing sampling, and stress-relief process produce waste oil compared with It is few;
4th, the present invention allows low viscosity crude oil by gravity voluntarily from sampling valve stream using the two ends difference in height on other adapter road Go out, without any internal or external driving part, simple in construction, sealed reliable.
Brief description of the drawings
Fig. 1 realizes the anti-structural representation for shearing the tube sampler sampled of isothermal with pressure for the embodiment of the present invention;
Wherein, 1, inlet control valve;2nd, aerial drainage intake valve;3rd, pressure gauge;4th, other adapter road;5th, thermometer;6th, sampling valve; 7th, discharge control valve;8th, crude oil pipeline.
Embodiment
Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following examples are used for Illustrate the present invention, but can not be used for limiting the scope of the present invention.
In the description of the invention, unless otherwise indicated, " multiple " are meant that two or more.Term " on ", " under ", "left", "right", " interior ", " outer ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position relationship be Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description, rather than indicate or dark Specific orientation must be had, with specific azimuth configuration and operation by showing the device or element of meaning, therefore it is not intended that right The limitation of the present invention.
Embodiment one
The present embodiment one provides a kind of tube sampler for realizing the anti-shearing sampling of isothermal with pressure, can not influence original Sampling directly with pressure, isothermal sampling and anti-shearing are sampled in the case that oil-piping 8 normally conveys technique, and need not during sampling External force drives, simple in construction, sealed reliable.
As shown in figure 1, the tube sampler includes the other adapter road 4 being obliquely installed relative to horizontal line, it is preferably other to take over The entrance point on road 4 is positioned above the position of the port of export;Bottom of the two ends on side adapter road 4 respectively with crude oil pipeline 8 can be opened and closed Connection, so as to realize the outside sampling with pressure from crude oil pipeline 8, side adapter road 4 is used for lasting out of crude oil pipeline 8 draw simultaneously Seal fluid up for safekeeping, continue to flow into other adapter road 4 using fluid, reach the purpose of preheating (cold) sampler, so that realize that isothermal is sampled, Without manually operating during (cold) the other adapter road 4 of fluid preheating, workload is down-sampled;Introducing a gas into other adapter road When in 4, the fluid sealed up for safekeeping is taken over outside road 4 by self gravitation effect outflow side, allows low viscous using the other two ends difference in height for taking over road 4 Crude oil is spent by gravity voluntarily from the side adapter least significant end of road 4 outflow, without any internal or external driving part, structure letter It is single, sealed reliable.
It is preferred that, pressure gauge 3 is provided with the adapter road 4 of side, so as to during sampling operation, pass through the energy of pressure gauge 3 Oil liquid pressure in the other adapter road 4 of monitoring in time, it is ensured that in the oil pressure and the inner fluid of crude oil pipeline 8 of the other adapter inner fluid of road 4 When oil pressure is equal, the fluid in other adapter road 4 is sealed up for safekeeping;Moreover it is possible to ensure when carrying out release to sealing fluid up for safekeeping, it is ensured that envelope Unloaded in the presence of the fluid in other adapter road 4 and be depressed into atmospheric pressure, i.e., the registration of pressure gauge 3 is 0MP, so as to ensure to sealing the abundant of fluid up for safekeeping Release is monitored, it is to avoid when out of side adapter road 4 to outer samples, and the fluid sealed up for safekeeping is because release is insufficient and is made by shearing With influence.
It is preferred that, thermometer 5 is provided with the adapter road 4 of side, thermometer 5 is used to monitor other adapter during sampling operation Oil liquid temperature change in road 4, it is ensured that when the temperature of the other adapter inner fluid of road 4 is equal with the temperature of the inner fluid of crude oil pipeline 8, Fluid in other adapter road 4 is sealed up for safekeeping;In addition, preheating (cold) effect can also be monitored using thermometer 5.
For the ease of being connected, entrance point and the port of export on other adapter road 4 are vertical respectively provided with inducer and to be gone out Mouth section, inducer and outlet section are connected with crude oil pipeline 8 respectively, the side adapter inclined bottom for being arranged on crude oil pipeline 8 in road 4, And connect between inducer and outlet section, so that other adapter road 4 is connected in the upstream side and downstream of crude oil pipeline 8 in parallel Between side;Inlet control valve 1 and discharge control valve 7 are respectively equipped with inducer and outlet section, for controlling other adapter road 4 respectively The break-make of entrance point and the port of export;It is preferred that inlet control valve 1 and discharge control valve 7 are separately positioned on close to crude oil pipeline 8 Position, so that after valve is closed, the fluid being gathered between valve and crude oil pipeline 8 is as few as possible, to ensure sealing up for safekeeping During fluid, immobilising " dead oil " amount for being trapped in inducer and outlet section in the side of crude oil pipeline 8 is effectively reduced.
It is preferred that, side is respectively arranged with aerial drainage intake valve 2 and sampling valve 6, aerial drainage intake valve 2 and sampling valve 6 on adapter road 4 The entrance point and the port of export on other adapter road 4 are respectively arranged at, aerial drainage intake valve 2 is used to introduce a gas into other adapter road 4, enters one Step preferably being connected to the level of aerial drainage intake valve 2 on inducer, and be located between inlet control valve 1 and tilting section, Neng Gou During deairing step before being sampled, can be more rapidly and efficiently the gas in other adapter road 4 is passed through into the row of aerial drainage intake valve 2 Go out;Sampling valve 6 is used to make to seal up for safekeeping in the other fluid release taken in road 4 and flow out, and sampling valve 6 is connected to other adapter road 4 most Low side, to ensure that all seal up for safekeeping can flow out in the other fluid taken in road 4 by self gravitation from sampling valve 6, aerial drainage air inlet Valve 2 is positioned above the position of the sampling valve 6, and to ensure that fluid is redirected back into behind other adapter road 4, front end is pushed the gas through Aerial drainage intake valve is discharged;In order to prevent fluid to be detained in the sampling valve 6, further preferably by sampling valve 6 it is vertical be connected to side Take over road 4 least significant end bottom, and sampling valve 6 outlet straight down so that fluid smooth outflow under gravity.
It should be noted that inducer is preferably connected to the upstream side of crude oil pipeline 8 by the other adapter road 4 of the sampler, Outlet section is connected to the downstream of crude oil pipeline 8 so that during sampling, flow direction of the fluid in other adapter road 4 with The flow direction of crude oil pipeline 8 is consistent, and when being vented, it is ensured that inducer disconnects with crude oil pipeline 8, so that by crude oil pipeline Fluid in 8 is reversely introduced in other adapter road 4, and then the gas in other adapter road 4 is discharged by aerial drainage intake valve 2;It is preferred that Welded between each pipeline of the sampler, to ensure seal for pipe joints and connection reliability.
It is preferred that sampler maximum working pressure is 6MPa, maximum operating temperature is 70 DEG C, and side is taken over road 4, inducer and gone out The caliber of mouth section uses DN32, and the side adapter pipe range of road 4 is 65cm, and it is 500mL, side adapter road that sampler, which can once accommodate oil sample, 4 inducer sets air intake-exhaust pipe, and aerial drainage intake valve 2 is arranged on air intake-exhaust pipe, and the caliber of air intake-exhaust pipe is used DN15。
The operation principle of the tube sampler of the present embodiment one is:Using the other adapter road for being connected in parallel on the bottom of crude oil pipeline 8, By controlling inlet control valve 1 and discharge control valve 7, crude oil is continued to flow through other adapter road 4, make the oil temperature in other adapter road 4 It is identical with the oil temperature in crude oil pipeline 8, and changed by the monitoring temperature of thermometer 5, reach the purpose of isothermal sampling;Sampling process In by control sampling valve 6 carry out unload press operation, abundant release is monitored whether by pressure gauge 3, it is to avoid oil sample by shearing make With;Using the two ends difference in height on the other adapter road 4 being obliquely installed, allow low viscosity crude oil fluid by gravity voluntarily from sampling valve 6 Outflow, finally realizes the anti-shearing sampling of isothermal with pressure.
Embodiment two
Based on the tube sampler described in embodiment one, the present embodiment two proposes a kind of sampling method, for directly from The anti-shearing sampling of isothermal with pressure in crude oil pipeline 8, and the normal conveying technique of influence crude oil pipeline 8 had not both been interfered with, without volume Outer addition internal and external drive, simple in construction, sealed reliable.
The sampling method comprises the following steps:
S1, tube sampler is placed in original state, original state need to ensure inlet control valve 1, discharge control valve 7, Aerial drainage intake valve 2 and sampling valve 6 are in closed mode.
S2, one end that the side of tube sampler is taken over into road 4 are connected with crude oil pipeline 8, and the other end breaks with crude oil pipeline 8 Open, the fluid in crude oil pipeline 8 is unidirectionally introduced in other adapter road 4, and the gas emptying that side is taken in road 4.
Specifically, discharge control valve 7 is first opened, while opening aerial drainage intake valve 2, it is ensured that the aperture of aerial drainage intake valve 2 is very It is small, when the fluid in crude oil pipeline 8 is redirected back into other adapter road 4 by outlet section, by being connect by the emptying of aerial drainage intake valve 2 Air in pipeline 4.
After S3, emptying gas, the other two ends for taking over road 4 are connected with crude oil pipeline 8, so that the oil in crude oil pipeline 8 Liquid is forward continued to flow into other adapter road 4, until oil temperature and oil pressure in other adapter road 4 and the oil temperature and oil in crude oil pipeline 8 Pressure is equal.
Specifically, after air by the emptying in adapter road 4, aerial drainage intake valve 2 is first closed, and open inlet control valve 1, Allow the fluid in crude oil pipeline 8 forward to flow into other adapter road 4, when the fluid constant flow in other adapter road 4 for a period of time after, Pressure gauge 3 and the change of the registration of thermometer 5 are observed, until the displays temperature of thermometer 5 is identical with oil temperature in crude oil pipeline 8.
S4, by closing inlet control valve 1 and discharge control valve 7 the other two ends for taking over road 4 are broken with crude oil pipeline 8 Open, so that the fluid in other adapter road 4 is sealed up for safekeeping;Specifically, first closing discharge control valve 7, inlet control valve 1 is then turned off, Now not clipped fluid is mothballed in the adapter road 4 of side.
S5, carry out release to sealing the fluid in other adapter road 4 up for safekeeping;Specifically, after completion fluid is sealed up for safekeeping, first opening and taking The release of sample valve 6, until the registration of pressure gauge 3 is 0MPa (oil pressure in i.e. other adapter road 4, which is unloaded, is depressed into atmospheric pressure), it is ensured that side adapter road Abundant release in 4;The a small amount of waste oil produced in release operating process is poured into wasted oil bucket after completing release.
S6, introduce a gas into other adapter road 4 so that the fluid sealed up for safekeeping by the other adapter road 4 of self gravitation effect outflow outside.
Specifically, after abundant release is completed, aerial drainage intake valve 2 is first opened, by side adapter road 4 and atmosphere, by gas Body is introduced in other adapter road 4, and now the fluid in other adapter road 4 relies on self gravitation effect, is voluntarily flowed out from sampling valve 6, It is that isothermal does not shear oil sample with the outflow oil sample that is collected into of sample bottle is connect.
S7, after sampling is finished, simultaneously close off sampling valve 6 and aerial drainage intake valve 2 so that tube sampler be replaced in just Beginning state.
In summary, the tube sampler and sampling method of the present embodiment have the advantages that:
1st, can the directly sampling with pressure in the case where not influenceing crude oil pipeline 8 normally to convey technique;
2nd, sampler is continued to flow through using crude oil, reaches the purpose of preheating (cold) sampler, and be by the monitoring of thermometer 5 It is no to reach that temperature is identical, realize that isothermal is sampled, without manually operating during oil stream preheating (cold) sampler, down-sample work Amount;
3rd, it can implement to unload press operation by the control to sampling valve 6 in sampling process, and can be monitored whether by pressure gauge 3 Abundant release, it is to avoid oil sample is by shear action, so that anti-shearing sampling is completed, and the waste oil that stress-relief process is produced is less;
4th, using the other two ends difference in height for taking over road 4, low viscosity crude oil is allowed voluntarily to be flowed out by gravity from sampling valve 6, nothing Need any internal or external driving part, simple in construction, sealed reliable.
Embodiments of the invention are provided for the sake of example and description, and are not exhaustively or by this to send out It is bright to be limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Choosing Select and describe embodiment and be more preferably to illustrate the principle and practical application of the present invention, and make one of ordinary skill in the art It will be appreciated that the present invention is so as to design the various embodiments with various modifications suitable for special-purpose.

Claims (10)

1. a kind of tube sampler for realizing the anti-shearing sampling of isothermal with pressure, it is characterised in that including being tilted relative to horizontal line The other adapter road of setting, the two ends on the other adapter road respectively with the bottom of crude oil pipeline is to be opened/closed connects, for from described Persistently drawn in crude oil pipeline and seal fluid up for safekeeping;When introducing a gas into the other adapter road, the fluid sealed up for safekeeping is by itself Outside the Action of Gravity Field outflow other adapter road.
2. tube sampler according to claim 1, it is characterised in that be respectively arranged with aerial drainage on the other adapter road and enter Air valve and sampling valve, the aerial drainage intake valve are used to introduce a gas into other adapter road, and the sampling valve is used to make to seal up for safekeeping in institute State the fluid release in other adapter road and flow out, the sampling valve is connected to the least significant end on other adapter road, the aerial drainage intake valve It is positioned above the position of the sampling valve.
3. tube sampler according to claim 2, it is characterised in that the entrance point on the other adapter road is positioned above The position of the port of export, the aerial drainage intake valve and sampling valve are respectively arranged at the entrance point and the port of export on other adapter road.
4. tube sampler according to claim 3, it is characterised in that the entrance point and the port of export point on the other adapter road Not vertical is provided with inducer and outlet section, and the inducer and outlet section are connected with crude oil pipeline respectively, the other adapter road The inclined bottom for being arranged on crude oil pipeline, and connect between the inducer and outlet section;The aerial drainage intake valve connection On inducer.
5. tube sampler according to claim 4, it is characterised in that be respectively equipped with the inducer and outlet section into Mouth control valve and discharge control valve, and the inlet control valve and discharge control valve are separately positioned on the close crude oil pipeline Position.
6. tube sampler according to claim 5, it is characterised in that being connected to for the aerial drainage intake valve level is described On inducer, and positioned between the inlet control valve and tilting section.
7. tube sampler according to claim 2, it is characterised in that the side that is connected to of the sampling valve vertically connects The bottom of the least significant end of pipeline.
8. the tube sampler according to claim any one of 1-7, it is characterised in that be provided with pressure on the other adapter road Power table.
9. the tube sampler according to claim any one of 1-7, it is characterised in that be provided with temperature on the other adapter road Degree meter.
10. a kind of sampling method of the tube sampler based on as described in claim any one of 1-9, it is characterised in that including Following steps:
S1, tube sampler is placed in original state;
S2, one end that the side of the tube sampler is taken over into road are connected with the crude oil pipeline, the other end and the crude oil pipe Road is disconnected, and the fluid in the crude oil pipeline is unidirectionally introduced in other adapter road, and the gas emptying that the side is taken in road;
S3, the two ends that the side is taken over into road are connected with crude oil pipeline, so that the fluid in the crude oil pipeline is continued to flow into In the adapter road of side, until the oil temperature and oil pressure in the other adapter road are equal with the oil temperature and oil pressure in crude oil pipeline;
S4, the other two ends for taking over road are disconnected with crude oil pipeline, so that the fluid in the other adapter road is sealed up for safekeeping;
S5, carry out release to sealing the fluid in the other adapter road up for safekeeping;
S6, introduce a gas into the other adapter road, connect so that the fluid sealed up for safekeeping is flowed out the side by self gravitation effect Outside pipeline.
CN201710250326.3A 2017-04-17 2017-04-17 A kind of tube sampler and sampling method for realizing the anti-shearing sampling of isothermal with pressure Withdrawn CN107063752A (en)

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Publication number Priority date Publication date Assignee Title
CN109989748A (en) * 2017-12-29 2019-07-09 中国石油天然气股份有限公司 Oil-well sampling device
CN112857596A (en) * 2021-03-08 2021-05-28 浙江易普润滑设备制造有限公司 Oil sight glass with quick cleaning structure and manufacturing method thereof

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CN203490106U (en) * 2013-08-29 2014-03-19 北京兰德伟业科技发展有限公司 Pressed balancing thread slow-retreat isobaric sampler
CN205719639U (en) * 2016-06-16 2016-11-23 阜宁县电控成套阀门厂有限公司 A kind of static on-line period device
CN206656879U (en) * 2017-04-17 2017-11-21 中国石油大学(北京) A kind of tube sampler for realizing the anti-shearing sampling of isothermal with pressure

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Publication number Priority date Publication date Assignee Title
RU2201585C1 (en) * 2001-10-19 2003-03-27 Вальшин Ринат Равильевич Procedure to sample fluid from pipe-line and device for its implementation
CN201311373Y (en) * 2008-07-10 2009-09-16 北京兰德伟业科技发展有限公司 Thread slowly receding constant-pressure sampler
CN201514339U (en) * 2009-10-10 2010-06-23 中国海洋石油总公司 Crude oil bypass sampling device
CN202735134U (en) * 2012-06-01 2013-02-13 中国石油天然气股份有限公司 Anti-shearing crude oil pipeline sampling device
CN203490106U (en) * 2013-08-29 2014-03-19 北京兰德伟业科技发展有限公司 Pressed balancing thread slow-retreat isobaric sampler
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109989748A (en) * 2017-12-29 2019-07-09 中国石油天然气股份有限公司 Oil-well sampling device
CN112857596A (en) * 2021-03-08 2021-05-28 浙江易普润滑设备制造有限公司 Oil sight glass with quick cleaning structure and manufacturing method thereof

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Application publication date: 20170818