CN103967486A - Gas pushing type underground fluid stratified sampling device - Google Patents
Gas pushing type underground fluid stratified sampling device Download PDFInfo
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- CN103967486A CN103967486A CN201410197719.9A CN201410197719A CN103967486A CN 103967486 A CN103967486 A CN 103967486A CN 201410197719 A CN201410197719 A CN 201410197719A CN 103967486 A CN103967486 A CN 103967486A
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Abstract
The invention discloses a gas pushing type underground fluid stratified sampling device. The end port of a simple packer system is inserted into a pipe of a shaft system to perform embedding and fixedly riveted with the pipe through screws to form an integral cylindrical structure. The integral cylindrical structure is buried in the stratum through drilled holes, and a guide pipe in the integral cylindrical structure penetrates through small holes preserved in simple packers to be connected with a U-shaped pipe underground fluid sample feeding system. The guide pipe penetrates through the small hole preserved in a first simple packer to be connected with a gas phase filter and a gas phase check valve of a soil gas sampling system and penetrates through the first simple packer to be connected with a needle valve on the ground and a fluid sampling container. A gas pushing type ground fluid sampling system penetrates through the small hole preserved in the first simple packer to be connected with the U-shaped underground fluid sample feeding system. The gas pushing type underground fluid stratified sampling device is ingenious and novel in structure, low in cost, excellent in durability, strong in field adaptability, wide in application fields, strong in project demands and good in application prospect and commercial value.
Description
Technical field
The present invention relates to sampling underground fluid field, superficial part stratum, more specifically relate in a kind of shallow-layer well based on the gas push formula principle device that layering samples to underground water and soil gas.
Background technology
Underground fluid is the key factor that is related to earth evolution and earth's surface biological existence.Sampling underground fluid, by isotope follow the trail of, the analytical method such as stratum residual gas analysis, chemical composition test, microbiologic population's feature can provide physics, chemistry and the microorganism information about stratum in a large number continuously, is engineering to be carried out to the assessment with Environmental security have one of monitoring means of great importance.
To analyze underground fluid, first will obtain underground fluid sample.Classify according to operating principle, both at home and abroad the sampling underground fluid technology of all kinds of exploitation be mainly divided into three kinds (Chen Libin. the certain methods of U.S.'s groundwater monitoring and instrument. underground water, 1988 (01): 55 ~ 58): the sampling of the formula of going into the well depthkeeping (Liu Jingtao etc. the development of phreatic water depth sampler. Environmental Monitoring management and technology, 2008 (05): 56 ~ 58.), the multistage monitoring sampling of pump formula (Lu Yubei. national hole multi-layer Underground Water Demonstration monitor well drilling technique and a research. mineral exploration engineering (rock and soil drilling engineering), 2007 (03): 5 ~ 8.), gas push formula sampling technique.Owing to going into the well, formula depthkeeping sampling technique can not run continuous samples; The multistage monitor well sampling technique of pump formula is excessive to formation fluid disturbance, and can not place, fine adaptation field (as without 220V AC power).Therefore, the demand of incorporation engineering reality, selects gas push formula sampling underground fluid technology.
The U-shaped pipe sampler of U.S.'s Berkeley laboratory Barry Freifeld exploitation takes the lead in applying in U.S. Frio salt water layer demonstration project, individual layer sampling, and the degree of depth reaches 1513.9m.(Freifeld, B. M. The U-tube:A New Paradigm for Borehole Fluid Sampling. Scientific Drilling, 2009,8 (8): 41 ~ 45) be applicable to deep formation fluid sampling, therefore its complex structure, complex operation, with high costs, there is no need to use such sampler for the sampling of superficial part formation fluid.
Patent of invention " layering gas-liquid two-phase fluid high-fidelity sampling device in well " (granted patent number: 20a1a63499.7) discloses layering gas-liquid two-phase fluid high-fidelity sampling device in well, this device can accurately be controlled sampling underground fluid layer position, realize the sampling of the gas-liquid of different layers position, ensure that temperature in sampling process, pressure are consistent with the temperature condition of underground fluid simultaneously.But mainly for the sampling of deep formation fluid.
Patent of invention " layering gas-liquid fluid sampling apparatus in a kind of shallow-layer well " (application number: 20a3a04034b5) discloses the hole multi-layer underground fluid sampling apparatus for shallow well, this device is based on gas push formula sampling technique, preliminary realization carried out long-term continuous sampling to multiple stratum, can accurately control sampling horizon, can carry out gas-liquid sampling simultaneously, simple in structure, with low cost, there is good place compliance (pressure source adopts nitrogen cylinder, avoids using 220V power supply).But still there are some technological difficulties, as sand grain or freezed in winter cause aperture clogs, cause sampler to lose efficacy; Structural design causes original air in pit shaft to get rid of, and causes inner overpressure air and the too early balance of outside head pressure reduction, causes formation fluid cannot continue to enter sampler; In interlayer string water or pit shaft, the fluid of extended residual, causes the sample that get on ground to lose representativeness, cannot reflect in real time the variation of specifying formation fluid particle concentration, and sample quality is reduced greatly.
Ensureing that under the functional requirement of multilayer sampling and the quality requirement prerequisite of sample, the requirements such as for the sampler of superficial part formation fluid, it is withstand voltage, heatproof are lower than deep formation fluid sampling.Therefore, the one-tenth of sampler should be lower, design and the operation of sampler should be more flexible.
Summary of the invention
The present invention overcomes the above-mentioned shortcoming and defect of existing sampling underground fluid device, is to be to provide a kind of gas push formula underground fluid Stratified Sampling device.The ingenious novelty of this sampler structure; With low cost, superior durability; Place strong adaptability; Application is extensive, and engineering demand is powerful, has a good application prospect and commercial value.
To achieve these goals, the present invention is by the following technical solutions:
A kind of gas push formula underground fluid Stratified Sampling device, it comprises wellbore system, simple and easy packer system, U-shaped pipe underground liquid sampling system, gas push formula ground liquids sampler and SOIL GAS sampler.
Each systemic-function and connected mode are described below: in the pipe of the port fill-in well cartridge system of simple and easy packer system, inlay, and rivet firmly by first floor screw, second layer screw, the 3rd layer of screw, the 4th layer of screw, layer 5 screw, layer 6 screw, layer 7 screw, the 8th layer of screw, the 9th layer of screw, the tenth layer of screw, form an external diameter 75mm, be about the integrated tubular structure of 10m.This integrated tubular structure is imbedded stratum by boring, and its outside directly contacts and accept the slow infiltration of formation water with stratum, and its inside arranges U-shaped pipe underground liquid sampling system and SOIL GAS sampler.Concrete connected mode is that conduit passes the first simple and easy packer, the second simple and easy packer, the 3rd simple and easy packer, the 4th simple and easy packer, the reserved 8mm aperture of the 5th simple and easy packer, is connected with U-shaped pipe underground liquid sampling system.Conduit is connected with gas filter and the gas phase one way valve of SOIL GAS sampler through the reserved 8mm aperture of the first simple and easy packer, and this conduit is connected with needle-valve, the liquid sampling container on ground through the first simple and easy packer.And the gas push formula ground liquids sampler that is arranged on well head place, ground is by being connected with U-shaped pipe underground liquid sampling system through the reserved aperture of the first simple and easy packer.Add and depress at nitrogen cylinder, the fluid pressure that U-shaped down-hole pipe underground liquid sampling system is infiltrated is delivered to first liquid sampling container, second liquid sampling container, the 3rd liquid sampling container on ground, thereby completes sampling.
Described integrated tubular structure, its connected mode is connected successively for the first simple and easy packer, the first pit shaft sample introduction section and the first filter screen, the second simple and easy packer, the first pit shaft linkage section, the 3rd simple and easy packer, the second pit shaft sample introduction section and the second filter screen, the 4th simple and easy packer, the second pit shaft linkage section, the 5th simple and easy packer, the 3rd pit shaft sample introduction section and the 3rd filter screen, the 6th simple and easy packer from top to bottom, as shown in Figures 2 and 3.Wherein the port of the first simple and easy packer, the second simple and easy packer, the 3rd simple and easy packer, the 4th simple and easy packer, the 5th simple and easy packer, the 6th simple and easy packing inserts in the pipe of the first pit shaft sample introduction section, the second pit shaft sample introduction section, the 3rd pit shaft sample introduction section or the first pit shaft linkage section, the second pit shaft linkage section and inlays, and first floor screw by being uniformly distributed along the circumference, second layer screw, the 3rd layer of screw, the 4th layer of screw, layer 5 screw, layer 6 screw, layer 7 screw, the 8th layer of screw, the 9th layer of screw, the tenth layer of screw riveted joint are fastening.And the first filter cloth side is pasted at the first pit shaft sample introduction section outer tube wall along circumference, the two ends up and down of the first filter screen are tight by first floor screw and second layer screw rivet clasp respectively; The second filter cloth side is pasted at the second pit shaft sample introduction section outer tube wall along circumference, and the two ends up and down of the second filter screen are tight by layer 5 screw and layer 6 screw rivet clasp respectively; The 3rd filter cloth side is pasted at the 3rd pit shaft sample introduction section outer tube wall along circumference, and the two ends up and down of the 3rd filter screen are tight by the 9th layer of screw and the tenth layer of screw rivet clasp respectively.
Described wellbore system comprises pit shaft sample introduction section, pit shaft linkage section, screw and filter screen.Described pit shaft sample introduction section, it is characterized in that length by reality sample calculation of capacity, approximately 60 2mm apertures are uniformly distributed along the circumference, and (screen specification is determined by ground layer soil body particle size distribution at its sidewall, the screen pack of one deck nylon material to be set, be 200 orders herein), herein for diameter 75mm, be about the PVC-U pipe of 0.5m.Described pit shaft linkage section, is characterized in that length is according to actual formation depth design, is the PVC-U pipe of diameter 75mm, long 4m herein.Pit shaft sample introduction section and pit shaft sample introduction section are connected by screw;
Described simple and easy packer system, is characterized in that boring a hole (quantity is determined by actual catheter number) in the middle of waterproof plug, and wherein the 6th simple and easy packer is taper.Described simple and easy packer system, its role is to: its upper and lower two ends are connected with wellbore system by screw, in the middle of it, perforation allows the conduit of U-shaped pipe underground liquid sampling system to pass through, and wherein its function does not allow formation water to penetrate, the PVC plastics that its material is good endurance;
Described U-shaped pipe underground liquid sampling system comprises storage fluid capacitance device, threeway, liquid phase one way valve and filter core, and its syndeton is: filter core connects liquid phase one way valve, and one way valve is connected with storage fluid capacitance device and conduit by threeway.Described storage fluid capacitance device, its role is to down-hole and stores the underground fluid infiltrating, and it is characterized in that diameter (12mm) is greater than conduit (8mm), and length determines according to actual required water intaking capacity.Described filter core its role is to filter underground fluid and protection one way valve, it is characterized in that it is shaped as disk, and its screen specification is 500 orders;
Described gas push formula ground liquids sampler comprises ball valve, liquid sampling container, reducing valve and nitrogen cylinder, its syndeton is: U-shaped pipe underground liquid sampling system leads to ground two conduits from down-hole all arrange ball valve, the ball valve rear end of a conduit arranges liquid sampling container, and the ball valve rear end of another root conduit arranges reducing valve.When sampling operation, reducing valve connects portable nitrogen cylinder;
Described SOIL GAS sampler comprises gas filter, gas phase one way valve, needle-valve and gas sampling container, and its syndeton is that underground gas filter connects gas phase one way valve, and is connected with needle-valve and the gas sampling container on ground by conduit.Described gas sample container, is characterized in that its structure is piston type, has air extracting function, similar injector for medical purpose, and its volume size is determined by the required soil tolerance of reality;
Utilize the present invention to carry out the method for stratified fluid sampling in shallow-layer well as follows:
1, assemble sampler according to the present invention, according to Ground-water level, pit shaft sample introduction segment length is set, according to the length corresponding to depth design pit shaft linkage section on intended target stratum.
2, sampler is put into the boring of just replacing at clear water, then carried out backfill.The wherein strong quartz sand of degree of depth backfill water permeability of pit shaft sample introduction section correspondence, expansive soil or the original state clay of pit shaft linkage section part backfill water permeability extreme difference, to cut off the contact of different layers position underground fluid.
3, open respectively the ball valve being connected with pressure source with liquid sampling container in gas push formula ground liquids sampler, what increase gradually nitrogen cylinder by reducing valve goes out atmospheric pressure (its value is not more than the allowable pressure of liquid phase one way valve), underground fluid is slowly discharged, until the fluid of U-shaped pipe underground liquid sampling system drains, complete thus well-flushing operation, close nitrogen cylinder and reducing valve.
4, complete after above-mentioned the 3rd step well-flushing operation, open nitrogen cylinder and reducing valve.Underground fluid, due to the flow direction restriction of liquid phase one way valve, slowly enters liquid sampling container.Reach after desired volume, liquid sampling is complete, closes each ball valve, reducing valve and nitrogen cylinder.
5, repeat said process 3 and 4, can carry out repeatedly liquid sampling to different layers position.
6, open the needle-valve being connected with gas sample container in SOIL GAS sampler, adopt gas piston sampling container that the gas remaining in pit shaft is taken away, air, because of the flow direction restriction of gas phase one way valve, can not pass back into pit shaft.Complete thus the well-flushing before gas sample, close needle-valve;
7, complete after above-mentioned the 6th step well-flushing operation a period of time, open needle-valve, gas sample container extracts the fresh SOIL GAS sample of designated capabilities, thereby realizes the sampling of SOIL GAS sample.
8, repeat said process 6 and 7, can carry out repeatedly SOIL GAS sampling.
9, after sampling, check each ball valve, needle-valve, the reducing valve of closing sampler, keep arrangement state until next periodic sampling.
The present invention has the following advantages and good effect:
The ingenious novelty of sampler structure, has overcome some technological difficulties; Installation, easy to operate; With low cost, superior durability; Place strong adaptability; Application is extensive, and engineering demand is powerful, has a good application prospect and commercial value.
1, a kind of gas push formula underground fluid Stratified Sampling device, this device is by the structure design of ingenious novelty, overcome some technological difficulties, ensured as far as possible the true representativeness of institute's sample thief, extended to a certain extent the service life of sampler:
A) the long 0.5m of pit shaft sample introduction section design, its volume approximates the twice of U-shaped pipe underground liquid sampling system volume.This structure has ensured that well-flushing has operated mobility and the sample quality of rear sampling, and needn't adopt electrodynamic pump to empty residual solution as other sampler;
B) problem that cannot get rid of for air in pit shaft, structure design is: the upper and lower two ends of pit shaft sample introduction section arrange simple and easy packer sealing, along the water inlet aperture of the uniform several 2mm of pit shaft sample introduction section circumference total length, does not interspace;
C) for alleviating the obstruction that sand grain causes, for the pit shaft sample introduction section 2mm aperture arranging that is uniformly distributed along the circumference, the filtering scheme of suiting measures to local conditions to design.Choose the filter screen (corresponding 200 orders of screen size 0.075mm) of corresponding specification by engineering soil body particle size distribution (if d95 is 0.068-0.071mm);
D) stop up for preventing that the pipeline of system in winter from freezing, to the cold-proof water-stop curtain of pit shaft sidewall (except sample introduction section) wrapped multiple, and be wound around the protection of heating electric silk along the line.Before sampling, the electrifying electrodes insulation that earth's surface place is reserved is thawed in the winter time;
2, a gas push formula underground fluid Stratified Sampling device, installation and sampling operation are all simple and convenient.
3, a kind of gas push formula underground fluid Stratified Sampling device, this device material therefor is the plastic materials, with low cost such as common PVC, nylon, effectively reduce the cost of device, and improved to a certain extent the durability on device (the long stratum being embedded in below groundwater table).
4, a gas push formula underground fluid Stratified Sampling device, pressure source adopts portable nitrogen cylinder, and a whole set of sampler, without 220V AC power is provided, can adapt to place, various extreme conditions field;
5, this device can be widely used in the Environmental Monitoring of different field, different engineering purpose phreatic water and SOIL GAS, and (salt water layer is sealed up for safekeeping, acid gas re-injection, carbon dioxide displacement increase the oily CO of quarrying to be specially adapted to carbon trapping, to utilize and to seal up for safekeeping (CCUS) field
2-EOR, carbon dioxide displacement increase adopts natural gas CO
2-EGR, carbon dioxide displacement increase mining coal seam gas CO
2-ECBM, carbon dioxide displacement increase adopts shale gas CO
2-ESG etc.) CO
2/ H
2s/CH
4leakage monitoring and the impact on shallow-layer underground environment thereof, be widely used in underground field (landfill disposal, nuclear waste disposal, mineral deposit infusion method exploitation etc.), phreatic water dynamic monitoring field (pollution sources tracking, the Comparison of Microbial Community etc.) sealed up for safekeeping of discarded object, Practical Project is sought-after, has a good application prospect and commercial value.
As mentioned above, emphasis of the present invention overcomes the technological difficulties that various existing sampling underground fluid device exists at sample high fidelity, silt obstruction, hydrate fouling or the aspects such as obstruction, interlayer string water, durability that freeze, and a kind of gas push formula underground fluid Stratified Sampling device is provided.The ingenious novelty of this sampler structure, installation and easy and simple to handle, cost of manufacture is low, superior durability, place adapt to by force, can carry out Stratified Sampling to long-term underground fluid and SOIL GAS to superficial part stratum.
Brief description of the drawings
Fig. 1 is a kind of gas push formula underground fluid Stratified Sampling device overall structure schematic diagram;
Fig. 2 is a kind of gas push formula underground fluid Stratified Sampling device-wellbore system schematic diagram;
Fig. 3 is a kind of gas push formula underground fluid Stratified Sampling device-simple and easy packer system schematic
Fig. 4 is a kind of gas push formula underground fluid Stratified Sampling device-U-shaped pipe underground liquid sampling system schematic diagram
Fig. 5 is a kind of gas push formula underground fluid Stratified Sampling device-gas push formula ground liquids sampler schematic diagram
Fig. 6 is a kind of gas push formula underground fluid Stratified Sampling device-SOIL GAS sampler schematic diagram
Wherein: 10-wellbore system, comprising: 11-pit shaft sample introduction section (PVC-U pipe, diameter 75mm, wall thickness 4.5mm, length calculates according to actual sampling amount, is 0.5m herein); 11a-the first pit shaft sample introduction section (PVC-U pipe, diameter 75mm, wall thickness 4.5mm, length base area layer depth relation is adjusted, and is 4m herein); 11b-the second pit shaft sample introduction section; 11c-three pit shaft sample introduction section; 12-pit shaft linkage section; 12a-the first pit shaft linkage section; 12b-the second pit shaft linkage section.13-screw;
13a-first floor screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13b-second layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13c-three layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13d-four layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four)
(normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section 13e-layer 5 screw, one group four;
13f-layer 6 screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13g-layer 7 screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13h-eight layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13i-nine layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
13j-ten layer screw (normal screws nail, for connecting well cartridge system and simple and easy packer system, distributes along the even circumferential of pit shaft sample introduction sample section or pit shaft linkage section, one group four);
14-filter screen;
14a-first floor filter screen (nylon material, 200 orders);
14b-second layer filter screen (nylon material, 200 orders);
14c-three metafiltration net (nylon material, 200 orders);
20-simple and easy packer system, comprising:
The simple and easy packer of 20a-the first (7 of the apertures of 8mm are worn in centre for the processing customization of PVC bar, external diameter 68mm);
The simple and easy packer of 20b-the second (4 of the apertures of 8mm are worn in centre for the processing customization of PVC bar, external diameter 68mm);
The simple and easy packer of 20c-three (3 of the apertures of 8mm are worn in centre for the processing customization of PVC bar, external diameter 68mm);
The simple and easy packer of 20d-four (2 of the apertures of 8mm are worn in centre for the processing customization of PVC bar, external diameter 68mm);
The simple and easy packer of 20e-five (1 of the aperture of 8mm is worn in centre for the processing customization of PVC bar, external diameter 68mm);
The simple and easy packer of 20f-six (0 of the aperture of 8mm is worn in centre for the processing customization of PVC bar, external diameter 68mm);
Above-mentioned simple and easy packer those of ordinary skill in the art all can prepare;
30-U-shaped pipe underground liquid sampling system, comprising:
31-storage fluid capacitance device
31a-the first storage fluid capacitance device (conduit of diameter 12mm, length depends on actual sampling capacity);
31b-the second storage fluid capacitance device (conduit of diameter 12mm, length depends on actual sampling capacity, 1.8m herein);
31c-three storage fluid capacitance device (conduit of diameter 12mm, length depends on actual sampling capacity, 0.6m herein);
32-threeway
32a-the first threeway (plastic material, 8mm cutting ferrule interface);
32b-the second threeway (plastic material, 8mm cutting ferrule interface);
32c-three threeway (plastic material, 8mm cutting ferrule interface);
33-liquid phase one way valve
33a-the first liquid phase one way valve (starting pressure 2psi, spring One-way Plastic Valves);
33b-second liquid phase one way valve (starting pressure 2psi, spring One-way Plastic Valves);
33c-three liquid phase one way valve (starting pressure 2psi, spring One-way Plastic Valves);
34-filter core
34a-the first filter core (processing customization, screen specification 500 orders, disc);
34b-the second filter core (processing customization, screen specification 500 orders, disc);
34c-three filter core (processing customization, screen specification 500 orders, disc,
Above-mentioned filter core those of ordinary skill in the art all can prepare;
40-gas push formula ground liquids sampler
41-ball valve
41a-the first ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
41b-the second ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
41c-three ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
41d-four ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
41e-five ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
41f-six ball valve (ball valve made of plastic, 8mm cutting ferrule interface);
42-liquid sampling container
42a-first liquid sampling container (plastic bottle of volume 500ml or vial);
42b-second liquid sampling container (plastic bottle of volume 500ml or vial);
42c-three liquid sampling container (plastic bottle of volume 500ml or vial);
43-reducing valve
43a-the first reducing valve (control nitrogen cylinder port of export pressure, prevent liquid phase one way valve overvoltage inefficacy);
43b-the second reducing valve (control nitrogen cylinder port of export pressure, prevent liquid phase one way valve overvoltage inefficacy);
43c-three reducing valve (control nitrogen cylinder port of export pressure, prevent liquid phase one way valve overvoltage inefficacy);
44-pressure source (nitrogen cylinder);
50-SOIL GAS sampler
51-pneumatic filter (filtering particle, dust, the gas phase one way valve of protection rear end);
52-gas phase one way valve (diaphragm type gas phase one way valve, 8mm cutting ferrule interface);
53-gas sample container (volume 1L, piston cylinder operator);
54-needle-valve (plastic material, 8mm cutting ferrule interface).
Above-mentioned other parts all can be purchased on market.
Detailed description of the invention
embodiment 1:
Below in conjunction with accompanying drawing, the present invention is described in more detail:
Known according to Fig. 1, a kind of gas push formula underground fluid Stratified Sampling device, it comprises wellbore system 10, simple and easy packer system 20, U-shaped pipe underground liquid sampling system 30, gas push formula ground liquids sampler 40 and SOIL GAS sampler 50.
Each systemic-function and connected mode are described below: in the pipe of the port fill-in well cartridge system 10 of simple and easy packer system 20, inlay, and rivet firmly by first floor screw 13a, second layer screw 13b, the 3rd layer of screw 13c, the 4th layer of screw 13d, layer 5 screw 13e, layer 6 screw 13f, layer 7 screw 13g, the 8th layer of screw 13h, the 9th layer of screw 13i, the tenth layer of screw 13j, form an external diameter 75mm, be about the integrated tubular structure of 10m.This integrated tubular structure is imbedded stratum by boring, and its outside directly contacts and accept the slow infiltration of formation water with stratum, and its inside arranges U-shaped pipe underground liquid sampling system 30 and SOIL GAS sampler 50.Concrete connected mode is that conduit passes the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the reserved 8mm aperture of the 5th simple and easy packer 20e, is connected with U-shaped pipe underground liquid sampling system 30.Conduit is connected with gas filter 51 and the gas phase one way valve 52 of SOIL GAS sampler 50 through the reserved 8mm aperture of the first simple and easy packer 20a, and this conduit is connected with needle-valve 54, the liquid sampling container 53 on ground through the first simple and easy packer 20a.And the gas push formula ground liquids sampler 40 that is arranged on well head place, ground is by being connected with U-shaped pipe underground liquid sampling system 30 through the reserved aperture of the first simple and easy packer 20a.Add and depress at nitrogen cylinder 44, the fluid pressure that U-shaped down-hole pipe underground liquid sampling system 30 is infiltrated is delivered to first liquid sampling container 42a, second liquid sampling container 42b, the 3rd liquid sampling container 42c on ground, thereby completes sampling.
Described integrated tubular structure, its connected mode is connected with the first filter screen 14a, the second simple and easy packer 20b, the first pit shaft linkage section 12a, the 3rd simple and easy packer 20c, the second pit shaft sample introduction section 11b and the second filter screen 14b, the 4th simple and easy packer 20d, the second pit shaft linkage section 12b, the 5th simple and easy packer 20e, the 3rd pit shaft sample introduction section 11c and the 3rd filter screen 14c, the 6th simple and easy packer 20f successively for the first simple and easy packer 20a, the first pit shaft sample introduction section 11a from top to bottom, as shown in Figures 2 and 3.Wherein the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the 5th simple and easy packer 20e, the port of the 6th simple and easy packing 20f inserts the first pit shaft sample introduction section 11a, the second pit shaft sample introduction section 11b, the 3rd pit shaft sample introduction section 11c or the first pit shaft linkage section 12a, in the pipe of the second pit shaft linkage section 12b, inlay, and by the first floor screw 13a being uniformly distributed along the circumference, second layer screw 13b, the 3rd layer of screw 13c, the 4th layer of screw 13d, layer 5 screw 13e, layer 6 screw 13f, layer 7 screw 13g, the 8th layer of screw 13h, the 9th layer of screw 13i, the tenth layer of screw 13j riveted joint is fastening.And the first filter screen 14a side is pasted at the first pit shaft sample introduction section 11a outer tube wall along circumference, the two ends up and down of the first filter screen 14a are tight by first floor screw 13a and second layer screw 13b rivet clasp respectively; The second filter screen 14b side is pasted at the second pit shaft sample introduction section 11b outer tube wall along circumference, and the two ends up and down of the second filter screen 14b are tight by layer 5 screw 13e and layer 6 screw 13f rivet clasp respectively; The 3rd filter screen 14c side is pasted at the 3rd pit shaft sample introduction section 11c outer tube wall along circumference, and the two ends up and down of the 3rd filter screen 14c are tight by the 9th layer of screw 13i and the tenth layer of screw 13j rivet clasp respectively.
Known according to Fig. 2, described wellbore system 10 comprises the first pit shaft sample introduction section 11a, the first pit shaft sample introduction section 11b, the first pit shaft sample introduction section 11c, it is characterized in that: the first pit shaft sample introduction section 11a, the first pit shaft sample introduction section 11b, the first pit shaft sample introduction section 11c drill through the aperture of 60 2mm along its tube wall circumference, and be evenly arranged along total length, inner air in the time that entering, underground fluid seepage flow can freely be discharged.And the first pit shaft sample introduction section 11a, the second pit shaft sample introduction section 11b, the 3rd pit shaft sample introduction section 11c are wound around the first screen pack 14a, the second screen pack 14b, the 3rd screen pack 14c of one deck 200 order specifications around, reduce sand grain as far as possible and infiltrate by aperture, wherein screen specification is selected according to actual soil body particle size distribution; Be further characterized in that: the permission infiltration volume of the first pit shaft sample introduction section 11a, the second pit shaft sample introduction section 11b, the 3rd pit shaft sample introduction section 11c equals 2 times of U-shaped pipe underground liquid sampling system 30 actual water storage volumes, and the sample that get on guarantee ground can represent the underground fluid of designated layer position in real time; The length that is further characterized in that the first pit shaft linkage section 12a, the second pit shaft linkage section 12b is determined by on-the-spot layer thickness relation, and outside the first pit shaft linkage section 12a, the second pit shaft linkage section 12b the fluid-tight original state clay of filling or expansive soil, the underground water that prevents different layers position is gone here and there mixing mutually.
Known according to Fig. 3, described simple and easy packer system 20 comprises the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the 5th simple and easy packer 20e, the 6th simple and easy packer 20f, it is characterized in that: the first simple and easy packer 20a wears 7 of the apertures of 8mm, the second simple and easy packer 20b wears 4 of the apertures of 8mm, the 3rd simple and easy packer 20c wears 3 of the apertures of 8mm, the 4th simple and easy packer 20d wears 3 of the apertures of 8mm, the 5th simple and easy packer 20e wears 1 of the aperture of 8mm, the 6th simple and easy packer 20f does not bore a hole and bottom is taper, be convenient to sampler and imbed stratum, be further characterized in that the external diameter of the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the 5th simple and easy packer 20e, the 6th simple and easy packer 20f upper and lower side equals the internal diameter of the first pit shaft sample introduction section 11a, the first pit shaft sample introduction section 11b, the first pit shaft sample introduction section 11c and the first pit shaft linkage section 12a, the second pit shaft linkage section 12b, be convenient to inlay and be inserted in pipe, rivet fastening, the external diameter of its interlude equals the external diameter of the first pit shaft sample introduction section 11a, the first pit shaft sample introduction section 11b, the first pit shaft sample introduction section 11c and the first pit shaft linkage section 12a, the second pit shaft linkage section 12b.In the middle of being further characterized in that the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the 5th simple and easy packer 20e, reserved 8mm aperture passes by the conduit of 8mm, and its unique indoor design ensures that the first simple and easy packer 20a, the second simple and easy packer 20b, the 3rd simple and easy packer 20c, the 4th simple and easy packer 20d, the 5th simple and easy packer 20e that are passed by conduit are all waterproof.
Known according to Fig. 4, described U-shaped pipe underground liquid sampling system 30 comprises storage fluid capacitance device 31, threeway 32, liquid phase one way valve 33, filter core 34, wherein store up fluid capacitance device 31 and comprise the first storage fluid capacitance device 31a, the second storage fluid capacitance device 31b, the 3rd storage fluid capacitance device 31c, threeway 32 comprises the first threeway 32a, the second threeway 32b, the 3rd threeway 32c, liquid phase one way valve 33 comprises the first liquid phase one way valve 33a, second liquid phase one way valve 33b, the 3rd liquid phase one way valve 33c, filter core 34 comprises the first filter core 34a, the second filter core 34b, the 3rd filter core 34c, it is characterized in that point three layers of independent sampling: first floor connected mode is followed successively by the first filter core 34a from the bottom to top, the first threeway 33a, the first liquid phase one way valve 32a and the first storage fluid capacitance device 31a, centre all adopts conduit to connect, be arranged in the stratum of underground buried depth 2m, as Fig. 4, the second layer is followed successively by the second filter core 34b, the second threeway 33b, second liquid phase one way valve 32b and the second storage fluid capacitance device 31b from the bottom to top, and centre all adopts conduit to connect, and is arranged in the stratum of underground buried depth 6m, the 3rd layer of connected mode is followed successively by the 3rd filter core 34c, the 3rd threeway 33c, the 3rd liquid phase one way valve 32c and the 3rd storage fluid capacitance device 31c from the bottom to top, and centre all adopts conduit to connect, and is arranged in the stratum of underground buried depth 10m.
Known according to Fig. 5, described gas push formula ground liquids sampler 40 comprises ball valve 41, liquid sampling container 42, reducing valve 43, nitrogen cylinder 44, wherein ball valve 41 comprises the first ball valve 41a, the second ball valve 41b, the 3rd ball valve 41c, the 4th ball valve 41d, the 5th ball valve 41e, the 6th ball valve 41f, liquid sampling holds 42 and comprises first liquid sampling container 42a, second liquid sampling container 42b, the 3rd liquid sampling container 42c, reducing valve 43 comprises the first reducing valve 43a, the second reducing valve 43b, the 3rd reducing valve 43c, its syndeton is: the conduit that is connecting U-shaped pipe underground liquid sampling system 30 from down-hole towards ground all arranges the first ball valve 41a, the second ball valve 41b, the 3rd ball valve 41c, the 4th ball valve 41d, the 5th ball valve 41e, the 6th ball valve 41f.The rear end of conduit that connects the first storage fluid capacitance device 31a arranges the first ball valve 41a and first liquid sampling container 42a, and the rear end of conduit that connects the first threeway 32a arranges the 4th ball valve 41d and the first reducing valve 43a; The rear end of conduit that connects the second storage fluid capacitance device 31b arranges the second ball valve 41b and second liquid sampling container 42b, and the rear end of conduit that connects the second threeway 32b arranges the 5th ball valve 41e and the second reducing valve 43b; The rear end of conduit that connects the 3rd storage fluid capacitance device 31c arranges the 3rd ball valve 41c and the 3rd liquid sampling container 42c, and the rear end of conduit that connects the 3rd threeway 32c arranges the 6th ball valve 41f and the 3rd reducing valve 43c.When sampling operation, the first reducing valve 43a, the second reducing valve 43b, the 3rd reducing valve 43c connect portable nitrogen cylinder 44;
Known according to Fig. 6, described SOIL GAS sampler 50 comprises pneumatic filter 51, gas phase one way valve 52, gas sample container 53, needle-valve 54, it is characterized in that: gas filter 51 is connected with gas phase one way valve 52, pass the first simple and easy packer 20a by conduit and transfer to ground and be connected with needle-valve 54, gas sample container 53.It is characterized in that selecting needle-valve 54 to control gas flow rate, be further characterized in that gas sample container 53 is for piston cylinder operator.
Utilize the present invention to carry out the method for stratified fluid sampling in shallow-layer well as follows:
1, assemble sampler according to the present invention, according to Ground-water level, pit shaft sample introduction section 11a-11c length is set, according to the length corresponding to depth design pit shaft linkage section 12a-12c on intended target stratum.
2, sampler is put into the boring of just replacing at clear water, then carried out backfill.The strong quartz sand of degree of depth backfill water permeability that wherein pit shaft sample introduction section 11a-11c is corresponding, expansive soil or the original state clay of pit shaft linkage section 12a-12c part backfill water permeability extreme difference, to cut off the contact of different layers position underground fluid.
3, open respectively in gas push formula ground liquids sampler 40 the ball valve 41a-41f being connected with pressure source with liquid sampling container 42a or 42b or 42c, what increase gradually nitrogen cylinder 44 by reducing valve 43a-43c goes out atmospheric pressure (its value is not more than the allowable pressure of liquid phase one way valve), underground fluid is slowly discharged, until the fluid of U-shaped pipe underground liquid sampling system 30 drains, complete thus well-flushing operation, close nitrogen cylinder 44 and reducing valve 43a-43c.
4, complete after above-mentioned the 3rd step well-flushing operation, open nitrogen cylinder 44 and reducing valve 43a-43c.Underground fluid, due to the flow direction restriction of liquid phase one way valve 33a-33c, slowly enters liquid sampling container 42a-42c.Reach after desired volume, liquid sampling is complete, closes each ball valve 41a-41f, reducing valve 43a-43c and nitrogen cylinder 44.
5, repeat said process 3 and 4, can carry out repeatedly liquid sampling to different layers position.
6, open the needle-valve 54 being connected with gas sample container 53 in SOIL GAS sampler 50, adopt gas piston sampling container that the gas remaining in pit shaft is taken away, air is because of the flow direction restriction of gas phase one way valve 52, can not pass back into pit shaft, complete thus the well-flushing before gas sample, close needle-valve 54;
7, complete after above-mentioned the 6th step well-flushing operation a period of time, open needle-valve 54, gas sample container 53 extracts the fresh SOIL GAS sample of designated capabilities, thereby realizes the sampling of SOIL GAS sample.
8, repeat said process 6 and 7, can carry out repeatedly SOIL GAS sampling.
9, after sampling, check each ball valve 41a-41f, needle-valve 54, the reducing valve 43a-43c that close sampler, keep arrangement state until the sampling in next cycle (as a week, one month or half a year).
Claims (6)
1. a gas push formula underground fluid Stratified Sampling device, it comprises wellbore system (10), simple and easy packer system (20), U-shaped pipe underground liquid sampling system (30), gas push formula ground liquids sampler (40) and SOIL GAS sampler (50), is characterized in that: in the pipe of the port fill-in well cartridge system (10) of simple and easy packer system (20), inlay, by first floor screw (13a), second layer screw (13b), the 3rd layer of screw (13c), the 4th layer of screw (13d), layer 5 screw (13e), layer 6 screw (13f), layer 7 screw (13g), the 8th layer of screw (13h), the 9th layer of screw (13i), the tenth layer of screw (13j) riveted joint, forms an external diameter 75mm, the integrated tubular structure of long 10m, and conduit is through the first simple and easy packer (20a), the second simple and easy packer (20b), the 3rd simple and easy packer (20c), the 4th simple and easy packer (20d), the 5th reserved hole of simple and easy packer (20e), be connected with U-shaped pipe underground liquid sampling system (30), conduit is connected with gas filter (51) and the gas phase one way valve (52) of SOIL GAS sampler (50) through the reserved hole of the first simple and easy packer (20a), and conduit is the needle-valve (54) with ground through the first simple and easy packer (20a), liquid sampling container (53) connects, and is arranged on the gas push formula ground liquids sampler (40) at well head place, ground by being connected with U-shaped pipe underground liquid sampling system (30) through the reserved hole of the first simple and easy packer (20a),
Integrated tubular structure is the first simple and easy packer (20a) from top to bottom, the first pit shaft sample introduction section (11a) and the first filter screen (14a), the second simple and easy packer (20b), the first pit shaft linkage section (12a), the 3rd simple and easy packer (20c), the second pit shaft sample introduction section (11b) and the second filter screen (14b), the 4th simple and easy packer (20d), the second pit shaft linkage section (12b), the 5th simple and easy packer (20e), the 3rd pit shaft sample introduction section (11c) and the 3rd filter screen (14c), the 6th simple and easy packer (20f) connects successively, wherein the first simple and easy packer (20a), the second simple and easy packer (20b), the 3rd simple and easy packer (20c), the 4th simple and easy packer (20d), the 5th simple and easy packer (20e), the port of the 6th simple and easy packing (20f) inserts the first pit shaft sample introduction section (11a), the second pit shaft sample introduction section (11b), the 3rd pit shaft sample introduction section (11c) or the first pit shaft linkage section (12a), in the pipe of the second pit shaft linkage section (12b), inlay, the first filter screen (14a) side is pasted at the first pit shaft sample introduction section (11a) outer tube wall along circumference, and the two ends up and down of the first filter screen (14a) are respectively by first floor screw (13a) and second layer screw (13b) rivet clasp, the second filter screen (14b) side is pasted at the second pit shaft sample introduction section (11b) outer tube wall along circumference, and the two ends up and down of the second filter screen (14b) are respectively by layer 5 screw (13e) and layer 6 screw (13f) rivet clasp, the 3rd filter screen (14c) side is pasted at the 3rd pit shaft sample introduction section (11c) outer tube wall along circumference, and the two ends up and down of the 3rd filter screen (14c) are tight by the 9th layer of screw (13i) and the tenth layer of screw (13j) rivet clasp respectively.
2. a kind of gas push formula underground fluid Stratified Sampling device according to claim 1, it is characterized in that: described wellbore system (10) comprises the first pit shaft sample introduction section (11a), the second pit shaft sample introduction section (11b), the 3rd pit shaft sample introduction section (11c), the first pit shaft linkage section (12a), the second pit shaft linkage section (12b), drill through the hole of 60 2mm along its tube wall circumference, the first pit shaft sample introduction section (11a), the second pit shaft sample introduction section (11b), the 3rd pit shaft sample introduction section (11c) is wound around respectively one deck 200 object the first screen packs (14a) around, the second screen pack (14b), the 3rd screen pack (14c).
3. a kind of gas push formula underground fluid Stratified Sampling device according to claim 1, is characterized in that: described simple and easy packer system (20) comprises the first simple and easy packer (20a), the second simple and easy packer (20b), the 3rd simple and easy packer (20c), the 4th simple and easy packer (20d), the 5th simple and easy packer (20e), the 6th simple and easy packer (20f), the hole that the first simple and easy packer (20a) is worn 8mm, the hole that the second simple and easy packer (20b) is worn 8mm, the hole that the 3rd simple and easy packer (20c) is worn 8mm, the hole that the 4th simple and easy packer (20d) is worn 8mm, the hole that the 5th simple and easy packer (20e) is worn 8mm, the 6th simple and easy packer (20f) bottom of not boring a hole is taper, the first simple and easy packer (20a), the second simple and easy packer (20b), the 3rd simple and easy packer (20c), the 4th simple and easy packer (20d), the 5th simple and easy packer (20e), the external diameter of the 6th simple and easy packer (20f) upper and lower side equals the first pit shaft sample introduction section (11a), the second pit shaft sample introduction section (11b), the 3rd pit shaft sample introduction section (11c) and the first pit shaft linkage section (12a), the internal diameter of the second pit shaft linkage section (12b), inlays and is inserted in pipe, riveted joint, the first simple and easy packer (20a), the second simple and easy packer (20b), the 3rd simple and easy packer (20c), the 4th simple and easy packer (20d), in the middle of the 5th simple and easy packer (20e), reserved 8mm hole is passed by the conduit of 8mm.
4. a kind of gas push formula underground fluid Stratified Sampling device according to claim 1, is characterized in that: described U-shaped pipe underground liquid sampling system (30) comprises storage fluid capacitance device (31), threeway (32), liquid phase one way valve (33), filter core (34), storage fluid capacitance device (31) comprises the first storage fluid capacitance device (31a), the second storage fluid capacitance device (31b), the 3rd storage fluid capacitance device (31c), threeway (32) comprises the first threeway (32a), the second threeway (32b), the 3rd threeway (32c), liquid phase one way valve (33) comprises the first liquid phase one way valve (33a), second liquid phase one way valve (33b), the 3rd liquid phase one way valve (33c), filter core (34) comprises the first filter core (34a), the second filter core (34b), the 3rd filter core (34c), first floor connected mode is followed successively by the first filter core (34a) from the bottom to top, the first threeway (33a), the first liquid phase one way valve (32a) and the first storage fluid capacitance device (31a), adopt conduit to connect, and the second layer is followed successively by the second filter core (34b) from the bottom to top, the second threeway (33b), second liquid phase one way valve (32b) and the second storage fluid capacitance device (31b), adopt conduit to connect, and the 3rd layer is followed successively by the 3rd filter core (34c) from the bottom to top, the 3rd threeway (33c), the 3rd liquid phase one way valve (32c) and the 3rd storage fluid capacitance device (31c), adopt conduit to connect.
5. a kind of gas push formula underground fluid Stratified Sampling device according to claim 1, is characterized in that: described gas push formula ground liquids sampler (40) comprises ball valve (41), liquid sampling container (42), reducing valve (43), nitrogen cylinder (44), ball valve (41) comprises the first ball valve (41a), the second ball valve (41b), the 3rd ball valve (41c), the 4th ball valve (41d), the 5th ball valve (41e), the 6th ball valve (41f), liquid sampling container 42 comprises first liquid sampling container 42a, second liquid sampling container 42b, the 3rd liquid sampling container 42c, reducing valve (43) comprises the first reducing valve (43a), the second reducing valve (43b), the 3rd reducing valve (43c), the conduit that is connecting U-shaped pipe underground liquid sampling system (30) from down-hole towards ground arranges the first ball valve (41a), the second ball valve (41b), the 3rd ball valve (41c), the 4th ball valve (41d), the 5th ball valve (41e), the 6th ball valve (41f), the rear end of conduit that connects the first storage fluid capacitance device (31a) arranges the first ball valve (41a) and first liquid sampling container (42a), and the rear end of conduit that connects the first threeway (32a) arranges the 4th ball valve (41d) and the first reducing valve (43a), the rear end of conduit that connects the second storage fluid capacitance device (31b) arranges the second ball valve (41b) and second liquid sampling container (42b), and the rear end of conduit that connects the second threeway (32b) arranges the 5th ball valve (41e) and the second reducing valve (43b), the rear end of conduit that connects the 3rd storage fluid capacitance device (31c) arranges the 3rd ball valve (41c) and the 3rd liquid sampling container (42c), the rear end of conduit that connects the 3rd threeway (32c) arranges the 6th ball valve (41f) and the 3rd reducing valve (43c), and the first reducing valve (43a), the second reducing valve (43b), the 3rd reducing valve (43c) connect portable nitrogen cylinder (44).
6. a kind of gas push formula underground fluid Stratified Sampling device according to claim 1, it is characterized in that: described SOIL GAS sampler (50) comprises pneumatic filter (51), gas phase one way valve (52), gas sample container (53), needle-valve (54), gas filter (51) is connected with gas phase one way valve (52), passes the first simple and easy packer (20a) transfer to ground and be connected with needle-valve (54), gas sample container (53) by conduit.
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