CN105298490B

CN105298490B - Underground fluid Stratified Sampling apparatus and method based on U-tube technology

Info

Publication number: CN105298490B
Application number: CN201510852795.3A
Authority: CN
Inventors: 李小春; 刘学浩; 李琦; 方志明; 宋然然; 肖威; 魏宁
Original assignee: Wuhan Institute of Rock and Soil Mechanics of CAS
Current assignee: Wuhan Institute of Rock and Soil Mechanics of CAS
Priority date: 2015-11-27
Filing date: 2015-11-27
Publication date: 2018-03-02
Anticipated expiration: 2035-11-27
Also published as: CN105298490A

Abstract

Enter subsystem, packer subsystem, link subsystem, ground sample subsystem and SOIL GAS sampling subsystem including underground fluid the invention discloses the underground fluid Stratified Sampling device based on U-tube technology.Underground fluid, which enters subsystem, includes driving tube, out sample tube, storage stream container, liquid phase check valve and filter core, SOIL GAS sampling subsystem includes the gas phase check valve for being arranged on setting position, and gas phase check valve passes sequentially through pneumatic ball valve, gas sampling bag and manual pump and connect.The invention also discloses the underground fluid Stratified Sampling method based on U-tube technology.Novel in structural design of the present invention, overcome some technological difficulties, more former technical products have in terms of service behaviour, the scope of application, system stabilization to be lifted by a relatively large margin, has preferable competitiveness and in the industry leading superiority；It is widely used, engineering demand is powerful, has a good application prospect and commercial value.

Description

Underground fluid Stratified Sampling apparatus and method based on U-tube technology

Technical field

The present invention relates to sampling underground fluid field, and in particular to the underground fluid Stratified Sampling dress based on U-tube technology Put, relate further specifically to the underground fluid Stratified Sampling method based on U-tube technology, and realize Different Strata depth underground fluid point The equipment series of layer sampling.

Background technology

Underground fluid is an important factor for being related to earth evolution and earth's surface biological existence.Sampling underground fluid, by same The analysis methods such as the plain tracking in position, the analysis of stratum residual gas, chemical composition test, microbiologic population's feature can continuously provide a large amount of passes Physics, chemistry and microbial information in stratum, it is that the monitoring for having great importance is assessed to engineering development and Environmental security One of means.

Underground fluid is analyzed, first have to obtain underground fluid sample.Classified according to operation principle, domestic external-open The sampling underground fluid technology of all kinds of hair is broadly divided into three kinds：Formula of going into the well depthkeeping sampling-Wireline fluid The multistage monitoring sampling-Pumps samplers and gas driving sampling technique-Gas-operated of samplers, pump type samplers.Due to going into the well, formula depthkeeping sampling technique can not run continuous samples；Pump type multistage monitoring well sampling technique is to stratum Flow disturbance is excessive, and can not adapt to field place very well（Such as without 220V AC powers）.Therefore, the actual need of incorporation engineering Ask, it is necessary to develop the equipment series of gas push formula sampling underground fluid.

The current mainstream technology of gas push formula sampling underground fluid is U-tube sampling technique-the U-tube sampling technology.The technology segment comes from the porous cup sampler-Porous ceramic cup of early stage samplers（Wagner, 1962）, also referred to as suction-type sampler-Suction lysimeter（Patrick, 1970）, it is used for Fluid sampling in shallow stratum soil.Wood improves the sampling method in 1973, is firstly introduced core parts -- check valve, will Sampling technique application depth at that time is from underground 10m（It is limited to the suction of vavuum pump, 1 atmospheric pressure or 10m water columns）Expand to Theoretic any depth.The Barry Freifeld in Lawrence Berkeley laboratory in 2004 successfully develop energy first It is applied to the U-tube technology of deep fluid sampling（U.S. patent Nos " Device useful as a borehole Fluid sampler ") include U.S. Frio salt water layers CO₂Seal demonstration project up for safekeeping（Depth is 1513.9m, and individual layer samples）, Australia it is big Leah CO2CRC Otway exhaustion oil gas fields CO₂Seal demonstration project up for safekeeping（Sampling depth capacity is 2046.9m, and 3 layers sample）Plus Put on airs Nunuvut Massive Sulfide Depositss monitoring works（Depth 350m）With U.S. Nevada areas Amargosa mountain valleys（It is deep Spend 400m, 4 layers of sampling）Wherein sampling depth capacity in Otway places reaches 2046.9m.

U-tube technology obtains greater advance at home in recent years as Novel underground fluid sampling technology.2007-2010 Lee's late autumn team of Wuhan Inst. of Rock and Soil Mechanics, Chinese Academy of Sciences carries out independence CO at Tongliao, Inner Mongolia scene₂Injection and U-shaped The field test of pipe sampling underground fluid, using depth 280m.Pan Deyuan, Li little Jie of China Geological Survey Bureau in 2013 etc. exist The test of deep-well U-tube well sampling is carried out in Henan Linying County, and point three progressive stages carry out single cycle sampling test, and sampling is deep Degree is respectively 270m, 370m and 500m.Lee's late autumn team of Wuhan Inst. of Rock and Soil Mechanics, Chinese Academy of Sciences in 2014 develops should For the U-tube sampling equipment of shallow stratum, the whole world uses all-plastic material, the great competitiveness of cost, through Hubei Wuhan first The 3 mouthfuls of deep 10m in Buddhist patriarch ridge scene well test is demonstrated successfully, in the Shengli Oil Field CO of Shandong region₂- EOR engineerings, Inner Mongol Hubei Province Er Duosi Shenhua CCUS demonstration projects（3 layers of sampling, well depth 21m）, Jilin Province Songyuan City many places real example such as Jilin Oil Field.

Team is on the basis of original technology, further technical research and products innovation, develops underground fluid layering and takes The series technique of sample, corresponding sample depth -20m levels, -200m levels, the Different Strata condition of -2000m levels and performance requirement, on ground The competitive advantage in lower fluid sampling field is significantly expanded.

The content of the invention

The purpose of the present invention is to be in view of the above-mentioned problems existing in the prior art, there is provided the underground based on U-tube technology Fluid layering sampler, also provide the underground fluid Stratified Sampling method based on U-tube technology.

Underground fluid Stratified Sampling device based on U-tube technology is novel in design, overcomes some technological difficulties, more former skill Art product has in service behaviour, the scope of application, economic feasibility, the stability of a system etc. to be lifted by a relatively large margin, is had good Competitiveness, application prospect and commercial value.

Underground fluid Stratified Sampling device based on U-tube technology enters subsystem, packer subsystem including underground fluid System, link subsystem, ground sample subsystem and SOIL GAS sampling five functional modules of subsystem.

Underground fluid Stratified Sampling device based on U-tube technology, including underground fluid enter subsystem, and underground fluid enters Subsystem includes driving tube, out sample tube, storage stream container, liquid phase check valve and filter core, driving tube one end extend ground and according to Secondary to be connected by ball valve, pressure-reducing valve and pressure source, what the driving tube other end extended to specified depth of stratum is sampled underground fluid Top and be connected with storage stream container one end, driving tube extends to the portion of the top for being sampled underground fluid of specified depth of stratum It is divided into U-shaped portion, U-shaped portion is connected with filter core by liquid phase check valve and turned on and then with being sampled underground fluid, and storage stream container is another End is connected with out sample tube one end, and the out sample tube other end extends ground and is connected by ball valve with sampling bottle.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to SOIL GAS sampling subsystem, SOIL GAS sampling Subsystem includes being arranged on the gas phase check valve of setting position, gas phase check valve pass sequentially through pneumatic ball valve, gas sampling bag with Manual pump connects.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to packer subsystem, packer subsystem bag The packer device for being sampled underground fluid for insulating each specified depth of stratum is included, packer device includes setting respectively It is arranged in the top packer being sampled above and below underground fluid and lower section packer, filter core for specifying depth of stratum Between square packer and lower section packer, the bottom of the lower section packer of the packer device of the bottom is cone.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to link subsystem, link subsystem include using Take in the chain of connection top packer and lower section packer, set in the chain adapter between top packer and lower section packer Filter core and the tube wall of chain adapter offer inlet opening, and link subsystem also includes being used to connect under top packer and last layer The chain adapter of square packer.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to packer subsystem, packer subsystem bag The packer device for being sampled underground fluid for insulating each specified depth of stratum is included, packer device includes setting respectively Specifying the top being sampled above and below the underground fluid whitewashing plug of depth of stratum and lower section whitewashing plug, top whitewashing The sidepiece of plug and lower section whitewashing plug is provided with injected hole, and the injected hole that top whitewashing plug and lower section are whitewashed on plug is equal Connected with Grouting Pipe, Grouting Pipe is segmented pressure-control valve by self-operated type and is connected with slip casting relaying container, undermost packer Conical head is connected with below the lower section whitewashing plug of device.

Circumferential slot is offered respectively on top whitewashing plug as described above and lower section whitewashing plug, and injected hole is opened in week To the cell wall of groove, drain sponge is respectively arranged with the circumferential slot of side's whitewashing plug and the circumferential slot of lower section whitewashing plug.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to link subsystem, link subsystem include using In the hollow connecting tube of connection top whitewashing plug and lower section whitewashing plug, between top whitewashing plug and lower section whitewashing plug Filter core is set in hollow connecting tube and the hole wall of hollow connecting tube offers inlet opening, link subsystem also includes being used to connect The solid connecting rod of the lower section whitewashing plug of side's whitewashing plug and last layer.

One end that out sample tube as described above extends ground samples high-pressure bottle, high pressure back pressure by ball valve, multiphase flow Valve, steam-water separator and sampling bottle connect, and sampling bottle includes gas sample container and liquid sampling container.

Underground fluid Stratified Sampling device based on U-tube technology, in addition to packer subsystem and link subsystem, envelope Include being used for the packer device for being sampled underground fluid for insulating each specified depth of stratum, packer device every device subsystem The top hydraulic packer being sampled above and below underground fluid and lower section liquid including being separately positioned on specified depth of stratum Packer is pressed, filter core is disposed between hydraulic packer and lower section hydraulic packer；

Link subsystem includes being used to connect the sleeve pipe of the lower section hydraulic packer of top hydraulic packer and last layer；Chain Connect the water inlet porous device that subsystem also includes being connected between top hydraulic packer and lower section hydraulic packer, porous device of intaking The perisporium of interior setting filter core and porous device of intaking offers multiple water inlet apertures.

Its operation principle is：Formation fluid downhole enters underground fluid sample introduction under the filtration of filter core by check valve The storage stream container of subsystem.By " driving tube " in compressed nitrogen displacement well head U-tube in ground sample subsystem, storage is flowed Underground fluid in container goes out from " out sample tube " displacement of the U-tube other end, and flows into sampling bottle, so as to realize that underground fluid takes Sample.Packer subsystem carries out packing sealing in underground to the water-bearing layer of different depth, avoids an interlayer during well multilayer sampling Water of going here and there influences.Link subsystem plays link effect.Manually pump extracts water located underground to SOIL GAS sampling subsystem on ground SOIL GAS sample more than bit line enters air bag, and completion takes airway dysfunction.

Underground fluid Stratified Sampling device based on U-tube technology, different for application depth of stratum are chosen suitably Technical combinations：

1) shallow layer stratum 20m levels are directed to, it is recommended as 0-30m using overall depth, and its technical scheme is U-tube underground current Body enters subsystem, rigid link subsystem（PVC-U drainpipes）, nitrogen cylinder（8L）；

2) middle level stratum 200m levels are directed to, it is recommended as 20-200m using overall depth, and its technical scheme is for U-tube Lower flow injecting subsystem, flexible link subsystem（Steel cable）, chemical grouting formula packer subsystem, nitrogen cylinder（20L） Deng；

3) deeper formation 2000m levels are directed to, unlimited using overall depth in theory, practical application is in adaptation stratum temperature Degree, pressure, the material and kit of etching condition, its technical scheme are that U-tube underground fluid enters subsystem, rigid chain Connect subsystem（Standard oil pipe）, hydraulic packer subsystem, compression gas tank etc..Wherein ground sample subsystem is more complicated and complete Standby, the engineering deep more than underground 200m can not continue to use the all-plastic material of above-mentioned 20m levels, 200m levels because of residing temperature, pressure condition Matter, and need to use stainless steel, need 316L, super 13 chromium even Hastelloy for corrosive environment.

Described underground fluid enters subsystem, and its function is that storage underground fluid is collected in underground.Its check valve is city Diaphragm type, spring, the umbrella-type check valve product purchased on field；Its filter core is the customization part voluntarily processed, 35 microns or smaller； Pressure source can use nitrogen cylinder when its middle-shallow layer, middle level stratum, and the pneumatic hand valve of plastic material can be selected in process control valve； Pressure source can use compression gas tank during deeper formation, and process control valve can use the high-pressure ball valve and back pressure of 316L materials Valve.

Described packer subsystem, its function is the formation fluid for insulating designated depth, prevents interlayer string water, shallow Layer, middle level stratum can use chemical grouting formula packer；During deeper formation, hydraulic packer is selected.

Described link subsystem, its function are that the packer subsystem for linking fixed different depth and underground fluid enter Subsystem, forever bury or whether recycle according to the quantity and weight of individual well packer, and packer, Ke Yiling Selection various configuration living, as shallow layer stratum is linked using the drainpipe of PVC-U diameters 75, middle level stratum using nylon rope, hawser, Spliced steel spar etc., deeper formation use the well casing of standard.

Described SOIL GAS sampling subsystem, its function are to obtain SOIL GAS sample.Shallow-layer, middle level stratum depth of stratum When mainly obtain more than underground phreatic line SOIL GAS, be independent subsystem；By more to what is taken during deeper formation Mutually stream sample carries out gas-water separation and obtains gaseous sample.

Underground fluid Stratified Sampling method based on U-tube technology, comprises the following steps：：

1st, the underground fluid Stratified Sampling device based on U-tube technology is assembled according to the present invention.According to each layer water level in underground Depth sets the buried depth of SOIL GAS sampling subsystem；Determine that underground fluid enters appearance according to the fluid sampling amount needed for engineering single The size of stream container is stored up in system（It is equal to 2-3 times of ground single sampling amount in principle）；According to live soil body grain diameter point Cloth determines that underground fluid enters filter core in subsystem（100 mesh, 200 mesh, 500 mesh etc.）；In addition, it is also necessary to according to engineering monitoring mesh The suitable drilling technology of careful selection；According to underground hydrological data and engineering demand design each section of link subsystem length and Set depth of packer subsystem, etc.；

2nd, drilling is to designated depth, and clear water is replaced 30 minutes.The underground fluid based on U-tube technology point is assembled at the scene Layer sampler, and investigation examines the various pieces of the underground fluid Stratified Sampling device based on U-tube technology paragraph by paragraph.Under guarantee The various pieces of the underground fluid Stratified Sampling device based on U-tube technology can normal work before well；

3rd, gone into the well paragraph by paragraph after the underground fluid Stratified Sampling device based on U-tube technology is decomposed, it is then fast to complete installation Speed is backfilled.The packer of wherein packer subsystem corresponds to the swelled ground or original state clay of depth backfill water penetration extreme difference, Play a part of to separate the underground fluid contact of different layers position, coordinate packer subsystem to ensure the validity of interlayer seal.Based on U-shaped Part in the underground fluid Stratified Sampling device of Manifold technology in addition to packer subsystem backfills the strong quartz sand of water penetration；

4th, after the underground fluid Stratified Sampling device based on U-tube technology is smoothly gone into the well, terrestrial operation activation packing is carried out Device subsystem.If packer subsystem uses chemical grouting formula packer, to the packer grouting operation of each depth in stratum, injection Chemical grout water-swellable so as to insulating stratum；If packer subsystem uses hydraulic packer, it need to apply in well head and refer to It is setting that fixed pressure completes each packer；If packer subsystem uses water-swellable Tubing Packer, it is not required at ground Operation bidirectional；

5th, after the underground fluid Stratified Sampling device installation based on U-tube technology, the underground current to sampling each layer position Body enters subsystem and carries out clear water cleaning and debugging.The drilling fluid and mud entered the purpose is to discharge underground fluid in subsystem Slurry, in order to avoid silting.It is worthy of note that carry out the clear water that injects during clear water cleaning operation because check valve non-return effect not Stratum can be entered, so as to be impacted to subsequent samples precision；

Completing step 1-5 means that described underground fluid Stratified Sampling device smoothly installs at the scene, so as to To carry out periodically sampling.

6th, each ball valve and pressure-reducing valve between sampling bottle and pressure source in surface fluids sampling subsystem are opened, is separately needed The pressure value size for the pressure that the driving tube that entered by pressure source to underground fluid in subsystem applies carries out relatively accurate control System, the pressure value applied to driving tube is more than or equal to value formation pressure corresponding to depth selection, less than allowing for liquid phase check valve Pressure value, underground fluid are slowly expelled to the sampling bottle on ground by out sample tube, realize fluid sampling；

7th, gas is taken to operate.Each the gas phase check valve and pneumatic ball valve in SOIL GAS sampling subsystem are opened, manually Pump empties the gas clean-up remained in SOIL GAS sampling subsystem.Because of the return-stopping function of gas phase check valve, air will not return The soil region being sampled is flowed into, so as to foreign gas be caused to pollute.Then carry out gas sample；

8th, step 6-7 is repeated in different layers position, obtains the underground fluid of different layers position and the sample of gas；

9th, after sampling, check and close the underground fluid Stratified Sampling device based on U-tube technology, keep placement state Until next periodic sampling.

The present invention has the advantages that：

A kind of described underground fluid Stratified Sampling method and apparatus novel in structural design based on U-tube technology, overcomes Some technological difficulties, more former technical products have in terms of service behaviour, the scope of application, system stabilization to be lifted by a relatively large margin, is had Preferable competitiveness and in the industry leading superiority；It is widely used, engineering demand is powerful, has a good application prospect and business valency Value.

1) principle of the inventive method based on U-tube, passive type well sampling and gas push, as the ground developed recently Lower fluid multilayer steam-water integratedization sampling, is different from the market similar technique（Formula of going into the well depthkeeping sampling technique, such as Beile's pipe, pump Formula sampling technique, such as peristaltic pump, electronic sampling pump, air pocket pump）.Sampling method advantage based on U-tube technology is as follows：

a）Energy individual well realizes the one-stop sampling of underground water, SOIL GAS；The multi-layer underground fluid sampling on different depth stratum；

b）Sample authenticity, representativeness are strong.The sampling technique is based on U-tube principle, can easily realize that sampling is complete in design The pressure of process is constant, and the passive type gas sample of check valve cut-off ensures sampling process, sampling rate to ground disturbance almost It can ignore, interlayer seal prevents the mixing of different depth underground fluid from ensureing the real-time of sampling and the representativeness of designated depth；

c）Place adapts to；It is generally applicable to various underground geological conditions（Such as mud, rubble）, earth's surface can be applied to very well Extreme environment（As strict antimagnetic, explosion-proof, frost that energy is cold-resistant, do not require to provide 220V power supplys, it is simple to keep an eye on maintenance）；

d）Cost is cheap, and after technology maturation and scale application, cost is less than similar fixed well multilayer sampling technology；

e）Similar technique is different from, three-dimensional long term monitoring and pollution sources follow-up study can be realized；Three-dimensional can more accurately be portrayed The elements transported in space is followed the trail of with pollution sources.

2) apparatus of the present invention, suitable technical combinations are chosen for the difference of application depth of stratum：The shallow layer stratum of 20m levels From U-tube sampling, rigidity link（PVC-U drainpipes）, nitrogen cylinder（8L）；200m levels select U-tube sampling, flexible chain Connect, slip casting type packer, nitrogen cylinder（20L）Deng；2000 grades of deeper formation is from U-tube sampling, rigidity link（Standard oil Pipe）, hydraulic packer, compression gas tank etc..

3) technical scheme of shallow layer stratum 20m levels is directed to, recommendation applies depth 0-30m, is limited to the strong of PVC-U drainpipes Degree.Advantage is as follows：

a）Using simple and reliable U-tube sampling subsystem and rigid link subsystem（PVC-U）, assembling and equipment are gone into the well It is convenient, using all-plastic material good endurance, the great competitiveness of cost；

b）Sampling precision is high, and underground retention volume is approximately equal to 2-3 times of ground single sampling amount, reduces remnants in design The influence of liquid fluid samples；The unique customized filter element filtering mesh number in check valve front end and effect are better than market like product, and one Determine degree and improve stability and durability that equipment is run in various extreme environments；Underground uses the check valve quilt of permanent type The micro suction sampling of dynamic formula, avoid flow and distribution caused by a large amount of groundwater abstractions of pump type sampling technique high speed are thought It is unbalance, avoid formula depthkeeping sampling technique equipment of going into the well and frequently go into the well the friendship of to caused by sample extraneous contamination and different water cut layer Pitch composite pollution；

c）Place adaptability is good, and application field is extensive.It is worth special instruction, the technology has been successfully applied to multiple works Journey project, preferable actual verification and user's favorable comment are obtained, as 8 mouthfuls of monitoring wells, individual well application have been laid in Inner Mongol place Depth 20m, three layers of water intaking（-12m、-16m、-20m）, take gas two layers（-2m、-8m）, so far（Close to two years）All operations Normally.

4) technical scheme of middle level stratum 200m levels is directed to, using depth 20m-200m, has been limited to interlayer sealing function Chemical grout water pressure resistance ability（1.5MPa）.More above-mentioned 20m technical scheme each side has a distinct increment and improved, except bag Well outer containing above-mentioned sampling precision height, place adaptability, its advantage also includes：

a）Link subsystem substitutes the rigid scheme of shallow-layer technical scheme using flexible scheme（PVC-U drainpipes）, application Cost is declined to a great extent during depth increase, and the time and process that equipment is gone into the well are reduced, workable；

b）Packer subsystem uses the chemical grouting technique of designed, designed, and using depth, interlayer is close within the 200m of underground Envelope effect is feasible, and financial cost is significantly less than similar packing technology（Inflatable seal packing element, hydraulic packer etc.）, but the note Slurry packing scheme needs custom design to solve the technical problem of perforation.

5) for deeper formation 2000m levels technical scheme, from the ripe hydraulic packer of oilfield or from swollen Expanding rubber packer, it is unlimited using depth in theory.The corrosion-resistant design of heat resisting and pressure resisting can be realized under existing industrial level；Energy The high-fidelity sampling of multicomponent and multiphase flow is realized, and sample precision is better than in the market same type technology；Can preferably with other wells Lower monitoring means fusion, forms complete downhole monitoring system.

6) the underground fluid environmental monitoring of different field, different engineering mesh, different depth scope is can be widely applied to, such as：

Discarded object underground sequestration field（As landfill disposal, nuclear waste disposal, carbon dioxide geological are utilized with sealing up for safekeeping Deng）；

a）Underground energy resource exploitation field（Such as the exploitation of mineral deposit infusion method, carbon dioxide displacement increases mining coal seam gas CO₂- ECBM, oil CO₂- EOR, salt water CO₂- EWR, shale gas CO₂- ESG, underground fluid resource enrichness situation and assessment of developing）；

b）Groundwater dynamic monitoring field（The Engineering Zone such as dam, factory, oil-producing region underground water pollution is assessed, pollution sources Tracking, Comparison of Microbial Community, contaminated land circulation assessment etc.）；

c）The region engineering such as agricultural, forestry, underground storage, geologic survey or the long term monitoring of Quality Supervision Station safeguard have good Good application prospect and commercial value.

Brief description of the drawings

Fig. 1 is the U-tube underground fluid Stratified Sampling schematic device suitable for shallow layer stratum；

Fig. 2 is the U-tube underground fluid Stratified Sampling schematic device suitable for middle level stratum；

Fig. 3 is the U-tube underground fluid Stratified Sampling schematic device suitable for deeper formation.

Embodiment

The present invention is described in more detail below in conjunction with the accompanying drawings：

Embodiment 1：Suitable for the U-tube underground fluid Stratified Sampling device of shallow-layer 20m levels, including

Underground fluid enters subsystem, including：

The driving tubes of 1.1a-first driving tubes of 1.1b-second；（External diameter 8mm conduit, PU-08）；

The out sample tubes of 1.2a-first；The out sample tubes of 1.2b-second；（External diameter 8mm conduit, PU-08）；

1.3a-first stores up stream container；1.3b-second stores up stream container；（Depending on single sampling capicity, such as volume 200ml）；

The liquid phase check valves of 1.4a-first；1.4b-second liquid phase check valve；（Connect the driving tube of shallow-layer first, circulation medium For underground fluid, only turn on, from top to bottom close all the time from the bottom to top）；

The filter cores of 1.5a-first；The filter cores of 1.5b-second；（35 microns of the grain diameter rank of filtering, equivalent to filter screen 500 Mesh, according to live soil body particle size distribution d₁₀Selection）.

Shallow-layer packer subsystem, including：

The first top of A2.1-shallow-layer packer（Wear 3 holes, diameter 8mm）；The first lower section of A2.2-shallow-layer packer（Wear 2 holes, diameter 8mm）；The second top of A2.3-shallow-layer packer（Wear 1 hole, diameter 8mm）；The lower section of A2.4-shallow-layer second is sealed Every device（Do not perforate, lower cone shape, top connects）；

The first top of shallow-layer packer, the second top of shallow-layer packer are top packer；The lower section of shallow-layer first insulates Device, the second lower section of shallow-layer packer are lower section packer.

Shallow-layer link subsystem（Packer subsystem and load-bearing are linked, laterallys secure shallow underground flow injecting subsystem System）, including；

The chain of A3.1-shallow-layer first is taken over（PVC-U drainpipes, external diameter 75mm, length determines according to actual demand, such as 8m）； The chain of A3.2-shallow-layer second is taken over（External diameter 75mm, long 0.5m, the several 3mm water inlets apertures of circumference uniform distribution）；A3.3-shallow-layer the 3rd Chain is taken over（PVC-U drainpipes, external diameter 75mm, length determines according to actual demand, such as 11m）；The chain of A3.4-shallow-layer the 4th is taken over（Outside Footpath 75mm, long 0.5m, the several 3mm water inlets apertures of circumference uniform distribution）；

Shallow-layer ground sample subsystem, including：

A4.1-shallow-layer nitrogen cylinder（Portable nitrogen cylinder, volume 8L）；

A4.2-shallow-layer pressure-reducing valve（Circulation medium nitrogen, pressure range 6MPa）；

The sampling bottle of A4.3a-shallow-layer first；The sampling bottle of A4.3b-shallow-layer second；（Standard liquid phase sampling bottle, in the market purchase Buy）；

The ball valve of A4.4a-shallow-layer first；The ball valve of A4.4b-shallow-layer second；The ball valve of A4.4c-shallow-layer the 3rd；A4.4d-shallow The 4th ball valve of layer；（Plastic material, pneumatic ball valve HVFF-08）.

Thin solum gas samples subsystem, including：

A5.1-shallow-layer gas phase check valve；

A5.2-shallow-layer pneumatic ball valve（Circulation medium nitrogen, HVFF-08）；

A5.3-shallow gas sampling bag；（Standard air bag, in the market purchase）；

The manual pump of A5.4-shallow-layer.

Each subsystem function is described as follows：Inlayed in the port insertion shallow-layer link subsystem of shallow-layer packer subsystem, And firm, one external diameter 75mm of formation, wall thickness 4.5mm integrated tubular structure are riveted by screw.Underground fluid sample introduction subsystem System and thin solum gas sampling subsystem are placed in the integrated tubular structure and are embedded in drilling as sampling core, its outside Directly contacted with stratum and receive fluid through the first filter core（1.5a）, the second filter core（1.5b）Slowly penetrate, and store after filtering The first storage stream container and the second storage stream container in shallow-layer link subsystem（1.3a, 1.3b）It is interior.The integrated tubular structure, dew Go out the well head connection shallow stratum ground sample subsystem of earth's surface.

Described underground fluid enters subsystem, and its specific connected mode is the first driving tube 1.1a and the first out sample tube 1.2a passes through the first top of shallow-layer packer A2.1, the first driving tube 1.1a, the first storage stream container 1.3a, the first out sample tube 1.2a U is formed, the first filter core 1.5a is made up of to the first stratum the first liquid phase check valve 1.4a and the U UNICOM The U-tube structure of fluid sampling.Similarly the second driving tube 1.1b and the second out sample tube 1.2b passes through the first top of shallow-layer packer A2.1, the first lower section of shallow-layer packer A2.2, the second top of shallow-layer packer A2.3, the second driving tube 1.1b, the second storage fluid capacitance Device 1.3b, the second out sample tube 1.2b form U, and the second filter core 1.5b is led to by second liquid phase check valve 1.4b and the U-shaped Road UNICOM, form the U-tube structure to the second formation fluid sampling.

Described shallow-layer packer subsystem, its function is the first top of shallow-layer packer A2.1 and the lower section of shallow-layer first is sealed Hydraulic connection up and down every the first water intaking layer of device A2.2 cut-offs position, the second water intaking layer of the second top of shallow-layer packer A2.3 cut-offs position Top hydraulic connection, guarantee take underground fluid sample from the water-bearing layer of underground designated depth.Its lower section of middle-shallow layer second Packer A2.4 effects also include protection inner member, and conical structure is easy to equipment to go into the well.

Described shallow-layer link subsystem, its function are connection shallow underground flow injecting subsystem and shallow-layer packer System, and each element of shallow underground flow injecting subsystem is protected, it is most long herein from diameter 75mm PVC-U drainpipes Mono- section of 4m.Wherein, shallow-layer the second chain adapter A3.2 and chain adapter A3.4 of shallow-layer the 4th is respectively as the first water intaking layer position and second The length of water intaking layer bit depth, the several diameter 3mm of circumference uniform distribution water inlet aperture, the adapter of the chain of shallow-layer second and the adapter of the chain of shallow-layer the 4th Spend for 0.5m, 2 times of designs of the actual sampling volume in volume foundation ground of chain adapter.Shallow-layer the first chain adapter A3.1 and shallow-layer 3rd chain adapter A3.3 mainly plays link effect, and its length is determined by the depth spacing of each water intaking layer position, as certain engineering is right respectively Underground -12m, -20m stratified pumpings, then the link of shallow-layer first pipe range 12m, shallow-layer second link pipe range 0.5m, the link of shallow-layer the 3rd Pipe range 8m, shallow-layer the 4th link pipe range 0.5m.

Described shallow-layer ground sample subsystem, its attachment structure are：U-tube shallow-layer is connected to from underground towards ground The conduit that underground fluid enters subsystem is respectively provided with the first ball valve of shallow-layer A4.4a, the second ball valve of shallow-layer A4.4b, the ball of shallow-layer the 3rd Valve A4.4c, the ball valve A4.4d of shallow-layer the 4th.Connect the rear end of conduit setting ball valve of shallow-layer second that shallow-layer first stores up stream container A1.3a A4.4b and shallow-layer the first sampling bottle A4.3a, other end conduit connection the first ball valve of shallow-layer A4.4a of the U-tube, shallow-layer decompression Valve A4.2 and shallow-layer nitrogen cylinder A4.1.Similarly connect the rear end of conduit setting ball of shallow-layer the 3rd that shallow-layer second stores up stream container A1.3b Valve A4.4c and shallow-layer the second sampling bottle A4.3b, other end conduit connection shallow-layer the 4th ball valve A4.4d, the shallow-layer of the U-tube subtract Pressure valve A4.2 and shallow-layer nitrogen cylinder A4.1；

Described thin solum gas sampling subsystem, its attachment structure are that conduit stretches into underground designated depth by ground, and It is sequentially connected shallow-layer gas phase check valve A5.1 and filter（If desired）, the conduit connects shallow-layer pneumatic ball valve respectively through well head A5.2, shallow gas sampling bag A5.3 and the manual pump A5.4 of shallow-layer.When taking the gas to operate, shallow-layer pneumatic ball valve A5.2 is opened, is passed through The A5.4 of the manual pump of shallow-layer pull collects the SOIL GAS in stratum to shallow gas sampling bag A5.3.And underground sets gas phase The return-stopping function of check valve ensures that the air of well head will not be mixed by conduit into stratum with SOIL GAS and polluted, and ensures institute Take gaseous sample precision and representativeness.

Embodiment 2：Suitable for the U-tube underground fluid Stratified Sampling device of middle level stratum 200m levels,

Underground fluid enters subsystem, including：

The driving tubes of 1.1a-first；The driving tubes of 1.1b-second；（1/8 stainless steel tube, the big Lip river gram of generation）；

The out sample tubes of 1.2a-first；The out sample tubes of 1.2b-second；（1/8 stainless steel tube, the big Lip river gram of generation）；

1.3a-first stores up stream container；1.3b-second stores up stream container；（Depending on single sampling capicity, such as volume 500ml）；

The liquid phase check valves of 1.4a-first；1.4b-second liquid phase check valve；（The first driving tube is connect, circulation medium is ground Lower fluid, only turns on, from top to bottom closes all the time from the bottom to top）；

The filter cores of 1.5a-first；The filter cores of 1.5b-second；（The grain diameter rank of filtering is according to live soil body grain diameter point Cloth d₁₀Selection）.

Middle level packer subsystem, including：

B2.1-middle level slip casting relaying container, wherein the chemical grout injected is the chemical macromolecule medicament of water-swellable, The medicament of property can be voluntarily configured, such as hydrogel, the polyurethane of market ripe such as water-swellable also can be used directly；

The Grouting Pipe of B2.2a-middle level first, the Grouting Pipe of B2.2b-middle level second（Pneumatics flexible pipe PU, diameter 4mm- can be selected 8mm）；

The top of B2.31a-middle level first whitewashing plug；The lower section of B2.32a- middle levels first whitewashing plug；B2.31b-middle level Second top whitewashing plug；The lower section of B2.32b-middle level second whitewashing plug；（Process and customize by actual demand.Nylon or PVC materials Matter, the optional 75mm of external diameter）；

The top of middle level first whitewashing plug, the top of middle level second whitewashing plug are top whitewashing plug；Under middle level first Side's whitewashing plug, the second lower section whitewashing plug are lower section whitewashing plug；

B2.4a-middle level the first drain sponge；B2.4b-middle level the second drain sponge；The drain sea of B2.4c-middle level the 3rd It is continuous；The drain sponge of B2.4d-middle level the 4th；（The slurries of slip casting small hole injection is uniformly distributed along the circumference outflow, and hold slurries）；

The self-operated type segmentation pressure control valve of B2.5a-middle level first；The self-operated type segmentation pressure control of B2.5b-middle level second Valve processed（Self-operated type segmentation pressure control valve can carry out break-make control by pressure, when input input pressure is in self-operated type Be segmented pressure control valve by pressure limit, then the input of self-operated type segmentation pressure control valve and output end are led It is logical, when input input pressure not in self-operated type segmentation pressure control valve by the way that in pressure limit, then self-operated type is segmented The input and output end of pressure control valve disconnect conducting）.

Middle level link subsystem（Packer subsystem and load-bearing are linked, underground fluid is laterallyd secure and enters subsystem）, bag Include：

The first solid connecting rod of B3.1a-middle level；The second solid connecting rod of B3.1b-middle level；（Optional flexible wirerope, Nylon rope）；

The first hollow connecting tube of B3.2a-middle level；The second hollow connecting tube of B3.2b-middle level；（The fixed slip casting up and down of link Plug, external diameter 75mm tubing PVC-U）.

Middle level ground sample subsystem, including：

B4.1-middle level nitrogen cylinder（Portable nitrogen cylinder, volume 8L）；

B4.2-middle level pressure-reducing valve（Control pressure source outlet pressures, circulation medium nitrogen, pressure range 6MPa）；

The ball valve of B4.3a-middle level first；The ball valve of B4.3b-middle level second；（Plastic material, pneumatic ball valve HVFF-08）；

The sampling bottle of B4.4a-middle level first；The sampling bottle of B4.4b-middle level second；（Standard liquid phase sampling bottle, in the market purchase Buy）.

BC soil gas samples subsystem, including：

B5.1-middle level gas phase check valve；

B5.2-middle level pneumatic ball valve（Circulation medium nitrogen, HVFF-08）；

B5.3-middle level gas sampling bag,（Standard air bag, in the market purchase）；

The manual pump in B5.4-middle level, for well head on-load pressure or air suction process.

Each subsystem function is described as follows：Underground fluid sample introduction subsystem layering is put into specified depth of stratum, often covers underground The packer subsystem in middle level setting up and down of flow injecting subsystem is to cut off the hydraulic connection between stratum.Middle level link System connects middle level packer subsystem in underground, underground fluid enters subsystem, the underground of BC soil gas sampling subsystem Part.The outside that underground fluid enters subsystem is directly contacted with stratum, and formation fluid is filtered through the first filter core 1.5a or second Slowly penetrate through the first liquid phase check valve 1.4a, second liquid phase check valve 1.4b after core 1.5b filterings, and be stored in underground fluid The storage stream container entered in subsystem（1.3a, 1.3b）It is interior.Expose the well head connection middle level ground sample subsystem of earth's surface.

Described underground fluid enters subsystem, and its specific connected mode is the first driving tube 1.1a and the first out sample tube 1.2a reaches the designated depth on the first sampling stratum through the top of middle level first whitewashing plug B2.31a, is sequentially connected the first storage stream Container 1.3a, the first liquid phase check valve 1.4a and the first filter core 1.5a, so as to form the structure to the first formation fluid sampling.Together The second driving tube 1.1b and the second out sample tube 1.2b is managed to spray through the top of middle level first whitewashing plug B2.31a, the lower section of middle level first The plug B2.32a and top of middle level second whitewashing plug B2.31b, the designated depth for reaching the second sampling stratum are starched, is sequentially connected Second storage stream container 1.3b, second liquid phase check valve 1.4b and the second filter core 1.5b.

Described middle level packer subsystem, including middle level slip casting relaying container B 2.1, middle level Grouting Pipe（B2.2a、 B2.2b）, middle level whitewashing plug（B2.31a、B2.32a、B2.31b、B2.32b）, middle level drain sponge（B2.4a~B2.4d）With Middle level self-operated type segmentation pressure control valve（B2.5a、B2.5b）.Its function is：The top of middle level first whitewashing plug B2.31a It is stifled with the hydraulic connection up and down of the lower section of middle level first whitewashing plug B2.32a the first water intaking layers of cut-off position, the whitewashing of the top of middle level second Head B2.31b and the top hydraulic connection of the lower section of middle level second whitewashing plug B2.32b the second water intaking layers of cut-off position, guarantee take ground Lower fluid sample is from the water-bearing layer of underground designated depth.Wherein the lower section of middle level second whitewashing plug B2.32b effects also include protecting Inner member is protected, conical structure is easy to equipment to go into the well.Its specific connected mode is：Manually pump loading middle level is noted on ground The water-swellable chemical grout of the inside of slurry relaying container B 2.1, stratum designated depth is imported by middle level the first Grouting Pipe B2.2a, Middle level the first Grouting Pipe B2.2a is connected by the self-operated type of middle level first segmentation pressure control valve B2.5a and is controlled middle level first Whitewash the plug B2.31a and lower section of middle level first whitewashing plug B2.32a for top；Stress control is segmented by the self-operated type of middle level second Valve B2.5b is connected and is controlled whitewashing plug B2.32b below the top of middle level second whitewashing plug B2.31b and middle level second.Meet Water expanding chemical slurries are injected into the top of middle level first whitewashing plug B2.31a and middle level the by middle level the second Grouting Pipe B2.2b One lower section whitewashing plug B2.32a, is attached to the top of middle level first whitewashing plug B2.31a and the lower section of middle level first whitewashing plug Middle level the first drain sponge B2.4a and middle level the second drain sponge B2.4b in B2.32a outer circumferences are by chemical grout water conservancy diversion It is scattered, slurries is circumferentially uniformly flowed out, the gap filled up between tube wall and the borehole wall, meet water volume and expand about 3 times so as to cut off Hydraulic connection at this above and below stratum.Slip casting packing scheme advantage is compared with prior art（Self-expanding packer, fluid pressure type Packer）Cost is cheap, cubical expansivity is big（300%-600%）, underground seal compatibility is good, is no more than suitable for underground buried depth 200m stratum.The self-operated type segmentation pressure control valve of middle level first sets it and starts pressure（Such as 0.5MPa）And confining pressure （2MPa）, the self-operated type of middle level second be segmented pressure control valve according to actual formation pressure condition set its start pressure（Such as 2MPa） And confining pressure（2.5MPa）.Manual pump positioned at ground changes middle level Grouting Pipe（2.2a、2.2b）Interior fluid pressure value, can To realize startup or the closure of each layer position branch road automatically by each self-operated type segmentation pressure control valve.The self-operated type is segmented pressure Control valve is simple in construction, by the pressure for controlling the valve inlet to go out, the valve can be made automatic in certain pressure limit Open, below or above the segment limit pressure when, valve is all in closure state.Can be without the help of external motivating force In the case of, by loine pressure come the unlatching of control valve and closure, reach the further control to pipeline.

Described middle level link subsystem, its function enter subsystem and middle level packer for connection middle level underground fluid System, and protect middle level underground fluid to enter each element of subsystem, steel cable, hollow connecting rod, nylon rope etc. can be selected, Herein only from solid connecting rod as description.Wherein, the second hollow connecting tube of the hollow connecting tube B3.2a in middle level first and middle level Connections and protection device of the B3.2b respectively as the first water intaking layer position and the second water intaking layer position；The first solid connecting rod of middle level The B3.1a and solid connecting rod B3.1b in middle level second plays link and supporting role to the gap depth between two water intaking layer positions.Its Specific connected mode is：The solid connecting rod B3.1a connections in middle level first are located at first layer depth selection（Such as deep 100m）In The top of layer first whitewashing plug B2.31a, the top of middle level first whitewashing plug B2.31a pass through the first hollow connecting tube of middle level B3.2a is connected with the lower section of middle level first whitewashing plug B2.32a, and whitewashing plug B2.32a in the lower section of middle level first connects through middle level Second solid connecting rod B3.1b is connected with the top of middle level second whitewashing plug B2.31b, the top of middle level second whitewashing plug B2.31b is connected by the lower section of the hollow connecting tube B3.2b in middle level second and middle level second whitewashing plug B2.32b, wherein middle level the The underground core parts that one hollow connecting tube B3.2a enters subsystem to middle level underground fluid shield, and are also underground water Indispensable bridge is overlapped with the sampling core parts seepage flow；Similarly, the second solid connecting rod of middle level is followed successively by from shallow to deep B3.1b, the top of middle level second whitewashing plug B2.31b, the hollow connecting tube B3.2b in middle level second, the lower section of middle level second whitewashing plug B2.32b, complete the water intaking layer position of middle level second（Such as deep 200m）Connection and protection.Described the first hollow connecting tube of middle level B3.2a, it is characterised in that hollow circular-tube is uniformly distributed along the circumference several diameter 3mm water inlet aperture, is easy to Groundwater infiltration；Its diameter With dead volume flexible design of the length according to sampling system control.Connection subsystem is illustrated, certain engineering is to depth 200m well implements three layers（-100m、-150m、-200m）Fluid sampling.According to the restriction of engineering demand and sampling equipment dead volume, Select each hollow connection pipe diameter 75mm, long 0.5m.Thus, the link subsystem of the underground fluid Stratified Sampling device by it is shallow enter It is followed successively by deeply, the first solid connecting rod of middle level（Long 98.5m, positioned at underground depth -98.5m）, the first hollow connecting tube of middle level（It is long 0.5m, positioned at underground depth -99m）, the second solid connecting rod of middle level（Long 50m, deep -149m）, the second hollow connecting tube of middle level （Long 0.5m, deep -149.5m）, the 3rd solid connecting rod of middle level（Long 50m, deep 199.5m）, the 3rd hollow connecting tube of middle level（It is long 0.5m, deep 200m）.The connection subsystem after improvement has larger improvement compared with the similar technique scheme of application 20m levels, shortens and takes Sampling device is gone into the well time and assembling procedure, and playing the fee of material of connection function and also having reduces by a relatively large margin.

Described middle level ground sample subsystem, its attachment structure are：The underground fluid for leading to ground from underground enters appearance First the first storage stream container of water intaking layer position part connection 1.3a of system the first out sample tube 1.2a sets the ball valve of middle level first B4.3a, middle level the first sampling bottle B4.4a；First driving tube 1.1a is connected with middle level pressure-reducing valve B4.2 and middle level nitrogen cylinder B4.1. Similarly, underground fluid enter the second storage stream container 1.3b of subsystem the second outer tube 1.2b set middle level the second ball valve B4.3b, Middle level the second sampling bottle B4.4b；Second driving tube 1.1b is connected with middle level pressure-reducing valve B4.2 and middle level nitrogen cylinder B4.1.

Described BC soil gas sampling subsystem, its attachment structure are that conduit stretches into underground designated depth by ground, and It is sequentially connected middle level gas phase check valve B5.1 and filter（If desired）, the conduit connects middle level pneumatic ball valve respectively through well head B5.2, middle level gas sampling bag B5.3 and the manual pump B5.4 in middle level.When taking the gas to operate, middle level pneumatic ball valve B5.2 is opened, is passed through The B5.4 of the manual pump in middle level pull collects the SOIL GAS in stratum to middle level gas sampling bag B5.3.And underground sets gas phase The return-stopping function of check valve ensures that the air of well head will not be mixed by conduit into stratum with SOIL GAS and polluted, and ensures institute Take gaseous sample precision and representativeness.

Embodiment 3：Suitable for the U-tube underground fluid Stratified Sampling device of deeper formation 2000m levels, as shown in Figure 3.

Underground fluid enters subsystem, including：

Deep layer packer subsystem, including：The first top of C2.1-deep layer hydraulic packer；The lower section of C2.2-deep layer first Hydraulic packer；The second top of C2.3-deep layer hydraulic packer,（Hydraulic packer, realize that underground is sealed by ground loading Every the setting of device or deblocking）；

The first top of deep layer hydraulic packer, the second top of deep layer hydraulic packer are top hydraulic packer；Deep layer First lower section hydraulic packer is lower section hydraulic packer.

Deep-link subsystem, including：C3.1a-deep layer first sleeve；The sleeve pipe of C3.1b-deep layer second；（Link packing Device subsystem and load-bearing, laterally secure underground fluid and enter subsystem, standard oil pipe can be achieved quick splicing up and down, length according to Actual demand determines）；The water inlet porous device of C3.2a-deep layer first；The water inlet porous device of C3.2b- deep layers second；（Stainless steel, Side wall wears multiple apertures and facilitates Groundwater infiltration）.

Deep layer ground sample subsystem, including：

C4.1-deep layer compression gas tank（Nitrogen can be selected, initial pressure and total measurement (volume) press actual gas consumption type selecting；

C4.2-deep layer digital display pressure sensor（316L stainless steels, fort alliance, Shi Weiluoke companies provide）

C4.3-deep-level high pressure gas sample container；（Pressure-resistant rustless steel container, determines voltage endurance capability and volume size, can Customization processing）；

C4.4-deep-level high pressure liquid sampling container；（Pressure-resistant rustless steel container, determines voltage endurance capability and volume size, can Customization processing）；

The high-pressure ball valve of C4.5a-deep layer first, the high-pressure ball valve of 4.5b-deep layer second；The smash of 4.5c-deep layer the 3rd Valve,（316L stainless steels, fort alliance, the big Lip river gram of generation provide）；

The multiphase flow of C4.6a-deep layer first samples high-pressure bottle, and the multiphase flow of 4.6b-deep layer second samples high-pressure bottle, （316L stainless steels, good airproof performance, it is desirable to which heat-insulation pressure keeping, special occasions require corrosion-resistant.It is knot known in the art Structure/device, processed by size and technical requirements）；

C4.7a-deep layer the first high pressure counterbalance valve, 4.7b-deep layer the second high pressure counterbalance valve（Pressure range is free, such as The KPB1SOD4 series that 25MPa or 68MPa, stainless steel, GO or the big Lip river gram of generation provide）；

C4.8-deep layer steam-water separator（To realizing steam-water separation, 316L stainless steels after heterogeneous fluid decrease temperature and pressure Or other pressure-resistant corrosion-resistant materials, it is structure/device known in the art, is processed by size and technical requirements）.

The described underground fluid Stratified Sampling device based on U-tube technology suitable for deeper formation 2000m levels, including Underground fluid enters subsystem, deep layer packer subsystem, deep-link subsystem and deep layer ground sample subsystem.Wherein institute The multiphase flow sample of stratum depths is taken to include vehicle repair major, gaseous sample is obtained by multiphase flow sample gas-water separation, therefore compared to Shallow-layer, the sampler in middle level eliminate SOIL GAS sampling subsystem.Each subsystem function is：Underground fluid enters subsystem and connect By designated depth underground fluid infiltration and be stored in the storage stream container of underground；Each water intaking of deep layer packer subsystem cut-off is deep The hydraulic connection on stratum about degree, ensure that the multiphase flow sample that ground is taken comes from specified depth of stratum, not by other water-bearing layers Pollution interference；Deep-link subsystem plays connection supporting role to each element in underground；Deep layer surface fluids sampling subsystem exists Terrestrial operation obtains required underground fluid sample, includes the multiphase flow sample of heat-insulation pressure keeping, the groundwater sample after pressure release, gas Gaseous sample after water separation.

Described underground fluid enters subsystem, and its specific connected mode is the first driving tube 1.1a and the first out sample tube 1.2a passes through the first top of deep layer hydraulic packer C2.1, is sequentially connected the first storage stream container 1.3a, the first liquid phase check valve 1.4a and the first filter core 1.5a.And the first storage stream container 1.3a, the first liquid phase check valve 1.4a and the first filter core 1.5a insert depth The water inlet porous device C3.2a of layer first, deep layer first is intake, and the first top of connection deep layer hydraulic pressure insulates porous device C3.2a respectively up and down Device C2.1 and the first lower section of deep layer hydraulic packer C2.2, so as to form the overall structure to the first formation fluid sampling.Similarly Second driving tube 1.1b and the second out sample tube 1.2b passes through the first top of deep layer hydraulic packer C2.1, the first lower section of deep layer hydraulic pressure Packer C2.2, the second top of deep layer hydraulic packer C 2.3, it is unidirectional to be sequentially connected the second storage stream container 1.3b, second liquid phase Valve 1.4b and the second filter core 1.5b.And the second storage stream container 1.3b, second liquid phase check valve 1.4b and the second filter core 1.5b are inserted Deep layer second water inlet porous device C3.2b, the water inlet porous device C3.2b of deep layer second top the second tops of connection deep layer hydraulic packer C2.3, so as to form the overall structure to the second formation fluid sampling.Wherein, the first described water inlet porous device is stainless steel Matter, its role is to chain lower packet and load-bearing, in addition protection sampling core parts；Characterized in that, side wall wear it is multiple Aperture, it is the connection bridge of underground water and sampling core parts.

Described deep layer packer subsystem, its function take underground fluid sample from underground designated depth by guarantee Water-bearing layer, its first top of mid-deep strata hydraulic packer C2.1 and the water intaking of the first lower section of deep layer hydraulic packer C2.2 cut-offs first The hydraulic connection up and down of layer position, the top hydraulic connection of the second water intaking layer of the second top of deep layer hydraulic packer C2.3 cut-offs position, Deep layer second fetches water layer position bottom without artificially drilling destruction, is that hydraulic connection is nature off-state.Fluid pressure type is selected herein Packer, it is characterised in that bearing capacity is very good, can reach 60MPa or higher, setting rear sealing effectiveness is guaranteed, petroleum drilling Well industry is commonly used；Its operation principle is the pressure that ground loading is specified, and ground lower packet is cut off by hydraulic drive Pin, the middle cylindrical rubber volumetric expansion of upper and lower limiter extruding is setting so as to complete, and realizes the closure to the stratum. The packer is characterised by that simple in construction, reasonable in design, reliable operation can be with resistance to underground fluid and CO₂Corrosiveness, prolong Long packer sets the time under sour corrosion environment, suitable for deep-link described in the laminated distributor under well operation of oil gas field System C3, its function are that connection deeper subsurface flow injecting subsystem C1 and deep layer packer subsystem C2, standard oil pipe are piecewise Splicing.

Described deep layer ground sample subsystem, its function are, take out the multiphase flow sample of deeper formation heat-insulation pressure keeping Product, and ensure its precision as far as possible.Its specific connected mode is：Enter first driving of the subsystem towards ground from underground fluid Pipe 1.1a is sequentially connected the first high-pressure ball valve of deep layer C4.5a, the deep layer digital display pressure sensor of deep layer ground sample subsystem C4.2 and deep layer compression gas tank C4.1；Underground fluid enters subsystem and is sequentially connected depth towards the first out sample tube 1.2a. on ground The multiphase flow of the deep layer first sampling high-pressure bottle C4.6a of layer ground sample subsystem, deep layer the first high pressure counterbalance valve C4.7a, depth Layer steam-water separator C4.8, deep-level high pressure gas sample container C4.3 and deep-level high pressure liquid sampling container C4.4.Thus U is formed Two loops of shape pipe displacement sampling, are pressurizeed by deep layer compression gas tank C4.1 to the first driving tube 1.1a, displacement underground first Stream container 1.3a underground fluid sample is stored up, due to the first check valve 1.4a non-return effect, underground heterogeneous fluid passes through first Out sample tube 1.2a enters the heterogeneous fluid of deep layer first sampling high-pressure bottle C4.6a, and passes through deep layer the first high pressure counterbalance valve C4.7a The value formation pressure of restriction is to taken multiphase flow sample pressure-maintaining.Similarly, the second driving tube 1.1b is sequentially connected the high pressure of deep layer second Ball valve C4.5b, the first high-pressure ball valve of deep layer C4.5a, deep layer digital display pressure sensor C4.2 and deep layer compression gas tank C4.1；Second Out sample tube 1.2b. is sequentially connected the multiphase flow of the deep layer second sampling high-pressure bottle C4.6b of deep layer ground sample subsystem, deep layer the Two high pressure counterbalance valve C4.7b, deep layer steam-water separator C4.8, deep-level high pressure gas sample container C4.3 and deep-level high pressure liquid take Sample container C4.4.Heterogeneous fluid sampling high-pressure bottle samples taken is the air-water two phase flow body of high-fidelity heat-insulation pressure keeping, is adapted to height Precision chemical analysis, phase-state change, or the constituent analysis and tracking easily changed with temperature, pressure condition.A part of sample strain unloads By deep layer steam-water separator C4.8 after load, the liquid after separation enters deep-level high pressure liquid sampling container C4.4, and gas enters Deep-level high pressure gas sample container C4.3, makees routine chemical componentses analysis respectively.

Embodiment 4：Underground fluid Stratified Sampling method based on U-tube technology, comprises the following steps：

Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.

Claims

1. the underground fluid Stratified Sampling device based on U-tube technology, it is characterised in that enter subsystem including underground fluid, Underground fluid, which enters subsystem, includes driving tube, out sample tube, storage stream container, liquid phase check valve and filter core, the extension of driving tube one end Go out ground and pass sequentially through ball valve, pressure-reducing valve and pressure source to connect, the driving tube other end extends to being taken for specified depth of stratum The top of sample underground fluid and it is connected with storage stream container one end, what driving tube extended to specified depth of stratum is sampled underground fluid The part of top be U-shaped portion, U-shaped portion is connected with filter core by liquid phase check valve and turn on and then with being sampled underground fluid, storage The stream container other end is connected with out sample tube one end, and the out sample tube other end extends ground and is connected by ball valve with sampling bottle；

Also include SOIL GAS sampling subsystem, SOIL GAS sampling subsystem includes the gas phase check valve for being arranged on setting position, gas Phase check valve passes sequentially through pneumatic ball valve, gas sampling bag is connected with manual pump,

Also include packer subsystem, what packer subsystem included being used for insulating each specified depth of stratum is sampled underground current The packer device of body, packer device include being separately positioned on being sampled above and below underground fluid of specified depth of stratum Top whitewashing plug and lower section whitewashing plug, top whitewashing plug and lower section whitewashing plug sidepiece be provided with injected hole, The injected hole that top is whitewashed on plug and lower section whitewashing plug connects with Grouting Pipe, and Grouting Pipe is segmented pressure control by self-operated type Valve processed is connected with slip casting relaying container, and conical head is connected with below the lower section whitewashing plug of undermost packer device.

2. the underground fluid Stratified Sampling device according to claim 1 based on U-tube technology, it is characterised in that described Top whitewashing plug and lower section whitewashing plug on offer circumferential slot respectively, injected hole is opened in the cell wall of circumferential slot, side's spray Starch in the circumferential slot of plug and the circumferential slot of lower section whitewashing plug and be respectively arranged with drain sponge.

3. the underground fluid Stratified Sampling device according to claim 1 based on U-tube technology, it is characterised in that also wrap Link subsystem is included, link subsystem includes being used for the hollow connecting tube for connecting top whitewashing plug and lower section whitewashing plug, on Set in hollow connecting tube between side's whitewashing plug and lower section whitewashing plug filter core and hollow connecting tube hole wall offer into Water hole, link subsystem also include the solid connecting rod for being used to connect the lower section whitewashing plug of top whitewashing plug and last layer.

4. the underground fluid Stratified Sampling device according to claim 1 based on U-tube technology, it is characterised in that described Out sample tube extend the one end on ground high-pressure bottle, high pressure counterbalance valve, steam-water separator sampled with taking by ball valve, multiphase flow Sample bottle connects, and sampling bottle includes gas sample container and liquid sampling container.

5. the underground fluid Stratified Sampling device according to claim 4 based on U-tube technology, it is characterised in that also wrap Include packer subsystem and link subsystem, what packer subsystem included being used for insulating each specified depth of stratum is sampled ground The packer device of lower fluid, packer device include being separately positioned on specified depth of stratum be sampled above underground fluid and The top hydraulic packer and lower section hydraulic packer of lower section, filter core are disposed over hydraulic packer and lower section hydraulic packer Between；Link subsystem includes being used to connect the sleeve pipe of the lower section hydraulic packer of top hydraulic packer and last layer；Link Subsystem also includes the water inlet porous device being connected between top hydraulic packer and lower section hydraulic packer, intakes in porous device Filter core is set and the perisporium for porous device of intaking offers multiple water inlet apertures.