CN103174414A - Sampling device for well-inside in-situ fluid in deep well - Google Patents
Sampling device for well-inside in-situ fluid in deep well Download PDFInfo
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- CN103174414A CN103174414A CN201310100024XA CN201310100024A CN103174414A CN 103174414 A CN103174414 A CN 103174414A CN 201310100024X A CN201310100024X A CN 201310100024XA CN 201310100024 A CN201310100024 A CN 201310100024A CN 103174414 A CN103174414 A CN 103174414A
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Abstract
The invention discloses a sampling device for well-inside in-situ fluid in a deep well. The sampling device is composed of a downhole sampling unit and a pit unit. The pit unit comprises a set of air supply sources controlled by an air regulator and a set of containers used for collecting samplings. The downhole sampling unit is provided with a water inlet window, an upper packer, a filtering screen unit and a lower packer, wherein the water inlet window, the upper packer, the filtering screen unit and the lower packer are sequentially arranged from top to bottom, and the water inlet window has a double-check function. The water inlet window comprises a base seat, wherein three channels are formed on the base seat and include a water inlet channel with a downward opening, a water outlet channel with an upward opening and an air supplying channel with an upward opening. The water inlet channel is controlled by a lower one-way valve, and sampling flow liquid flows in unidirectionally. The water outlet channel with the upward opening is controlled by an upper one-way valve, the sampling flow liquid flows out unidirectionally, and the water outlet channel is connected to the containers used for collecting the samplings through sampling pipes. The air supplying channel with the upward opening is communicated with the air supply sources of the pit unit through air supply pipes. The sampling device can conveniently and rapidly extract the samplings of the well-inside in-situ fluid in the deep well.
Description
Technical field
The present invention relates to a kind of downhole fluid sampling technique, take the device of original position fluid in well under especially a kind of deep-well, small space condition.
Background technology
The deep formation fluid sample can provide Ground Fluid Chemistry feature, isotope composition, dissolved gas and microorganism feature etc., have deep space physics, chemistry and biological information, to deep-well design and develop and deep fluid monitoring significant, be the important component part of deep-well engineering.Yet, gather underground original state fluid and possess sizable difficulty, at first, in probing and one-tenth well process, drilling fluid can produce formation fluid and pollute; Secondly, the process means in sampling process can produce disturbance to formation fluid, affects its original state; The 3rd, the down-hole narrow space, and have very high head of liquid, the deep fluid sampling needs rational structure design and very high performance requirement to sampling equipment.At present, domestic also do not have the degree of depth to surpass the pneumatic sampling technique of downhole fluid and the equipment of 500 meters.
Summary of the invention
The purpose of this invention is to provide original position fluid sampling apparatus in a kind of deep-well well, it can extract original position fluid sample in the deep-well well easily and efficiently.
For achieving the above object, the present invention takes following design scheme:
Original position fluid sampling apparatus in a kind of deep-well well is comprised of well sampling unit and aboveground unit two parts, and described aboveground unit comprises one group of air supply source and one group of container that is used for collecting and sampling of being implemented to control by air regulator;
Described well sampling unit arranges window of receiving water, a upper packer, a screen pack unit and the lower packet with two return-stopping functions successively from top to bottom; Described window of receiving water with two return-stopping functions comprises a pedestal, offers three circulation passage on pedestal: one is the aquaporin that enters that Open Side Down, and this enters aquaporin by the unidirectional inflow sampling of one way valve control once flow liquid; It two is the exhalant canal of opening upwards, and this exhalant canal is controlled unidirectional outflow sampling flow liquid by one way valve on, and it is connected to container for collecting and sampling by probe tube; It three is also the air supply channel of opening upwards, and this air supply channel is communicated with the air supply source of aboveground unit by air supply pipe.
In described deep-well well in the original position fluid sampling apparatus, a kind of in water-swellable formula packer, inflatable packer or mechanical swelling type packer adopted respectively in described upper packer and lower packing.
The upper packer of original position fluid sampling apparatus adopts the inflatable packer in described deep-well well, and this inflatable packer adopts that eccentric to cross the pipeline packer be good, comprises a packing element, the packing element two ends packing element cover that is tightly connected respectively; One core barrel is placed in packing element and eccentric institute puts, and this core barrel overlaps tight engagement and maintenance by the packing element at a pair of end cap and packing element two ends.
In described deep-well well in the original position fluid sampling apparatus, described packing element two ends are fixed with screw thread, adopt seal with screwed joint with the packing element cover.This screw thread can be to be integral the metal threaded of formula with packing element after monobloc cast.
Described eccentric the mistake in the pipeline packer, the mating face of described packing element and each packing element cover is that non-monoplane engages.
In the original position fluid sampling apparatus, described probe tube and air supply pipe are adopted high-pressure hose in described deep-well well.
In described deep-well well, in the original position fluid sampling apparatus, the diameter of described probe tube and air supply pipe is all less than 12.5mm, and window of receiving water thickness is less than 25mm, and the window of receiving water width is less than 35mm.
In described deep-well well, in the original position fluid sampling apparatus, described air supply source is one group of high pressure N that is implemented to control gas output by air regulator
2Gas cylinder.This high pressure N
2High-pressure air source pressure in gas cylinder is greater than 30Mpa, and supply gas pressure is less than 20Mpa.
In the interior original position fluid sampling apparatus of described deep-well well, the two-layer stainless steel screen pack of described screen pack unit employing, the order number of screen pack is the 20-50 order.
In deep-well well of the present invention, the original position fluid sampling apparatus has wide application and application space, as aspect the carbon dioxide geological storage, is used for monitor well carbon dioxide fluid storage, diffusion, migration rule, monitoring carbon dioxide leakage risk and leak path.Aspect underground nuke rubbish pollution monitoring, be used for storage, diffusion and the transport conditions of monitoring deep formation nuke rubbish, and the pollution of nuke rubbish control monitoring etc., can offer help for the protection deep geologic environment.
Advantage of the present invention is:
1. depth selection can reach 2000m, has filled up the moving sampling of domestic small-diameter deep gas well gas art blank.
2. packer packing is every sampling target zone fluid, and the sample point position is accurate, and the sample representativeness that obtains is good.Inert gas drives sampling, and the sample that gathers in sampling process is pollution-free.
3. the sampler volume is little, can be in the same place with other monitoring system and Technology Integration, realizes the purpose that in a bite well, multilayer is independently monitored and taken a sample.
4. sampling amount is large, and during depth selection 500m, the single sampling amount can reach 20L-25L, and during depth selection 2000m, the single sampling amount can reach 80L-100L.
5. after sampling was completed, the well sampling device can propose safely and can reuse.
6. sampler advanced technology, simple in structure, stable performance, easy to operate and with low cost, be suitable for Spread in China.
Description of drawings
Fig. 1 is original position fluid sampling apparatus structural representation in deep-well well of the present invention.
Fig. 2 is the window of receiving water structural representation (main looking) of original position fluid sampling apparatus in deep-well well of the present invention.
Fig. 3 is that in deep-well well of the present invention, the bias of original position fluid sampling apparatus is crossed pipeline packer construction schematic diagram (main looking).
Fig. 4 is that in deep-well well of the present invention, the bias of original position fluid sampling apparatus is crossed pipeline packer construction schematic diagram (side-looking).
In Fig. 1: the 1-plug; The 2-lower packet; The 3-screen pack; The 4-upper packer; The 5-window of receiving water; The 6-probe tube; The 7-air supply pipe; 8-high pressure N
2Gas cylinder; The 9-air regulator; 10-sterile sampling bottle.
In Fig. 2: the 51-pedestal; The top connection of 52-one way valve; The lower contact of 53-one way valve; Stainless steel ball under 54-; The 55-plug; The 56-pad; 57-crosses the water baffle ring; The 58-union; The upper stainless steel ball of 59-.
In Fig. 3, Fig. 4: 41-end cap screw; The 42-end cap; The 43-cable fill; 44-end cap O RunddichtringO; 45-core barrel O RunddichtringO; 46-packing element cover; The 47-packing element; The 48-core barrel; 49-is metal threaded.
The present invention is described further below in conjunction with drawings and the specific embodiments.
The specific embodiment
Shown in Figure 1, be original position fluid sampling apparatus one embodiment in deep-well well of the present invention, in this embodiment, in the deep-well well, the original position fluid sampling apparatus is made of unit, down-hole and aboveground unit two parts, location sampling target zone is responsible in the unit, down-hole, isolate non-sampled fluid, allow sampled fluid to enter sampler etc., mainly comprise plug 1, lower packet 2, screen pack 3, upper packer 4, window of receiving water 5, probe tube 6 and air supply pipe 7.Aboveground unit is responsible for controlling sampling and is received the sampled fluid that collects ground, mainly comprises high pressure N
2Gas cylinder 8, air regulator 9 and sterile sampling bottle 10.
Described window of receiving water 5 is processed by stainless steel material.Window of receiving water allows sampled fluid to enter probe tube 6, and prevents from backflowing, and referring to Fig. 2, window of receiving water is comprised of pedestal 51, one way valve top connection 52, one way valve lower contact 53, stainless steel ball 54, plug 55, pad 56, mistake water baffle ring 57 and union 58.Window of receiving water has two return-stopping functions.The lower one way valve that allows sampled fluid to form by one way valve top connection 52, one way valve lower contact 53 and lower stainless steel ball 54, part fluid enters air supply pipe 7, another part fluid enters by upper stainless steel ball 59 and crosses the upper one way valve that water baffle ring 57 forms, and enters probe tube 6.In the purging sampling process, the prevention fluid backflows in sampled well.
Described probe tube 6 adopts high-pressure hose, and effect is in the sampling preparatory stage, holds the fluid that enters sampler by window of receiving water, in the purging sample phase, bears the high water column pressure of sampled fluid, carries sampled fluid to ground.The diameter of probe tube 6 is good less than 12.5mm, withstand voltage should be greater than 20Mpa.
Described air supply pipe 7 also adopts high-pressure hose, and its effect is in the sampling preparatory stage, holds the fluid that enters sampler by window of receiving water, in the purging sample phase, bears the driving gas high pressure, carries sampled fluid to probe tube.Air supply pipe 7 diameters are less than 12.5mm, withstand voltage also should be greater than 20Mpa.
Described upper (under) packer 4(2) adopts water-swellable formula packer, inflatable packer or mechanical swelling type packer, effect is the fluid of sampling horizon above (following) in the packing pit shaft, upper and lower packer becomes a pair of group, with sampled fluid and the isolation of non-sampled fluid, obtain representative good original position fluid sample.For realizing goal of the invention of the present invention, the present invention on this (under) packer done well-designed, referring to Fig. 3 and shown in Figure 4, this inflatable packer adopts an eccentric pipeline packer of crossing, mainly comprise an outer packing element, one core barrel 48 and a pair of end cap 42, core barrel 48 is placed in outer packing element and is fixed on eccentric position, this core barrel 48 is by a pair of end cap 42 and outer packing element tight engagement and maintenance, be provided with core barrel O RunddichtringO 45 at core barrel 48 and 42 of end caps, 42 of packing element and end caps are provided with end cap O RunddichtringO outside.In embodiment shown in diagram, outer packing element is constituted by the packing element cover 46 that packing element 47 and two ends engage, and the mating face of packing element 47 and each packing element cover 46 is that non-monoplane engages, and this mating face is take mutual penetration type as good, and metal threaded 49 are integral formula with the packing element monobloc cast.By this design, make (under) packer packing effect in the deep-well well is also very good, is difficult for displacement, guaranteed that the sample point position is very accurate, to obtain representative good sample.
The effect of described screen pack 3 is the impurity in the filtering and sampling fluid, prevents that large granular impurity from entering the destruction sampler.Screen pack can adopt two-layer stainless steel screen pack, and the order number of screen pack is the 20-50 order.
For the source of the gas of original position fluid sampling apparatus air feed in deep-well well of the present invention is used for supplying with gases at high pressure, gases at high pressure enter air supply pipe 7 by air regulator 9, and then enter sampler.Source of the gas can adopt high-pressure inert gas N
2, N
2Contact with sampled fluid chemical reaction does not occur, the representativeness of sampled fluid is guaranteed.High-pressure air source pressure is greater than 30Mpa, and supply gas pressure is less than 20Mpa, to guarantee the normal operation of original position fluid sampling apparatus in the deep-well well under the deep-well condition.
Described sterile sampling bottle 10 is used for the collecting and sampling fluid, process inert gas N before sampling
2Rinse sealing after sampling.
In deep-well well of the present invention, the course of work of original position fluid sampling apparatus is:
At first carrying out sampler installs:
(1) the sampling preparatory stage, referring to Fig. 1, first on the ground plug plug 1, lower packet 2, screen pack 3, upper packer 4, window of receiving water 5, probe tube 6 and air supply pipe 7 are linked in sequence with the assembling of sampling unit part under completed well;
(2) the well sampling unit that connects is transferred to specifying sampling horizon in company with drill string or oil pipe, fix by the dedicated tying silk between drill string or oil pipe and well sampling unit;
(3) complete successively on the ground high pressure N
2Gas cylinder 8 is connected with air regulator 9, and air regulator 9 is connected connection with air supply pipe, and probe tube 6 is connected with sample bucket.
Sampling:
(1) by control chart 1 Air adjuster 9, with air supply pipe tube head and probe tube tube head and the N that stores standard atmospheric pressure
2Gas cylinder is communicated with, and formation fluid enters in probe tube 6 and air supply pipe 7 by screen pack 3, sampling window 5;
(2) the opening high pressure gas source valve 8, inject high pressure N from the air supply pipe tube head
2Gas cylinder 8, window of receiving water 5 one way valve autoshutdowns, formation fluid slowly flow out from probe tube 6, and the fluid-evacuation that collects is arrived sample bucket;
(3) repeating step (1), more than (2) three times (as required determine number of repetition), the displacement formation fluid rinses sampler, the fluid that flows out to probe tube 6 reaches requirement;
(4) repeating step (1), (2) are collected sampled fluid and are entered sterile sampling bottle 10;
(5) after sampling is completed, repeating step (1), (2), rinse sampler, for sampling is next time prepared.
The various embodiments described above can some variations in addition under not departing from the scope of the present invention, thus above explanation comprise should be considered as exemplary, but not in order to limit the protection domain of the present patent application patent.
Claims (10)
1. the interior original position fluid sampling apparatus of deep-well well, be comprised of well sampling unit and aboveground unit two parts, and described aboveground unit comprises one group of air supply source and one group of container that is used for collecting and sampling of being implemented to control by air regulator; It is characterized in that:
Described well sampling unit arranges window of receiving water, a upper packer, a screen pack unit and the lower packet with two return-stopping functions successively from top to bottom; Described window of receiving water with two return-stopping functions comprises a pedestal, offers three circulation passage on pedestal: one is the aquaporin that enters that Open Side Down, and this enters aquaporin by the unidirectional inflow sampling of one way valve control once flow liquid; It two is the exhalant canal of opening upwards, and this exhalant canal is controlled unidirectional outflow sampling flow liquid by one way valve on, and it is connected to container for collecting and sampling by probe tube; It three is also the air supply channel of opening upwards, and this air supply channel is communicated with the air supply source of aboveground unit by air supply pipe.
2. original position fluid sampling apparatus in deep-well well according to claim 1 is characterized in that: a kind of in water-swellable formula packer, inflatable packer or mechanical swelling type packer adopted respectively in described upper packer and lower packing.
3. original position fluid sampling apparatus in deep-well well according to claim 2, it is characterized in that: described upper packer adopts the inflatable packer, this inflatable packer is the eccentric pipeline packer of crossing, and comprises a packing element, the packing element two ends packing element cover that is tightly connected respectively; One core barrel is placed in packing element and eccentric institute puts, and this core barrel overlaps tight engagement and maintenance by the packing element at a pair of end cap and packing element two ends.
4. original position fluid sampling apparatus in deep-well well according to claim 3 is characterized in that: described packing element two ends are fixed with screw thread, adopt seal with screwed joint with the packing element cover.
5. original position fluid sampling apparatus in deep-well well according to claim 4, it is characterized in that: the fixing screw thread in described packing element two ends is to be integral the metal threaded of formula with packing element after monobloc cast.
6. original position fluid sampling apparatus in deep-well well according to claim 3, it is characterized in that: described eccentric the mistake in the pipeline packer, the mating face of described packing element and each packing element cover is that non-monoplane engages.
7. original position fluid sampling apparatus in deep-well well according to claim 1, is characterized in that: described probe tube and air supply pipe are adopted high-pressure hose.
8. original position fluid sampling apparatus in deep-well well according to claim 1, it is characterized in that: the diameter of described probe tube and air supply pipe is all less than 12.5mm, and window of receiving water thickness is less than 25mm, and the window of receiving water width is less than 35mm.
9. original position fluid sampling apparatus in deep-well well according to claim 1, it is characterized in that: described air supply source is one group of high pressure N that is implemented to control gas output by air regulator
2Gas cylinder; Described high pressure N
2High-pressure air source pressure in gas cylinder is greater than 30Mpa, and supply gas pressure is less than 20Mpa.
10. original position fluid sampling apparatus in deep-well well according to claim 1 is characterized in that: described screen pack unit adopts two-layer stainless steel screen pack, and the order number of screen pack is the 20-50 order.
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| CN201310100024.XA CN103174414B (en) | 2013-03-26 | 2013-03-26 | Original position fluid sampling apparatus in a kind of deep-well well |
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| CN201310100024.XA CN103174414B (en) | 2013-03-26 | 2013-03-26 | Original position fluid sampling apparatus in a kind of deep-well well |
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| CN103174414B CN103174414B (en) | 2016-07-13 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107023289A (en) * | 2016-02-02 | 2017-08-08 | 中国科学院武汉岩土力学研究所 | A kind of U-tube underground fluid multilayer sampling device |
| CN108468528A (en) * | 2018-05-18 | 2018-08-31 | 河北省地矿局国土资源勘查中心 | Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof |
| CN109667579A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院武汉岩土力学研究所 | Deep-well gas-liquid fluid sampler in a kind of Oil in Super-low Permeability stratum |
| CN111927429A (en) * | 2020-07-29 | 2020-11-13 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
| CN112539965A (en) * | 2020-11-25 | 2021-03-23 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Bedrock aquifer sampling device and method |
| CN115929294A (en) * | 2023-03-13 | 2023-04-07 | 大庆市璞庆钻采设备制造有限公司 | General trial production tool for operation |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107023289A (en) * | 2016-02-02 | 2017-08-08 | 中国科学院武汉岩土力学研究所 | A kind of U-tube underground fluid multilayer sampling device |
| CN107023289B (en) * | 2016-02-02 | 2020-01-24 | 中国科学院武汉岩土力学研究所 | U-shaped pipe underground fluid multilayer sampling device |
| CN108468528A (en) * | 2018-05-18 | 2018-08-31 | 河北省地矿局国土资源勘查中心 | Fourth-series deep well layered water pumping and stopping device and water pumping and stopping method thereof |
| CN109667579A (en) * | 2018-12-28 | 2019-04-23 | 中国科学院武汉岩土力学研究所 | Deep-well gas-liquid fluid sampler in a kind of Oil in Super-low Permeability stratum |
| CN109667579B (en) * | 2018-12-28 | 2021-07-13 | 中国科学院武汉岩土力学研究所 | Deep well gas-liquid fluid sampling device in ultra-low permeability stratum |
| CN111927429A (en) * | 2020-07-29 | 2020-11-13 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
| CN111927429B (en) * | 2020-07-29 | 2022-02-11 | 北京理工大学 | Detection and early warning device and method for carbon dioxide stored in oil and gas field exploitation layer |
| CN112539965A (en) * | 2020-11-25 | 2021-03-23 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队 | Bedrock aquifer sampling device and method |
| CN115929294A (en) * | 2023-03-13 | 2023-04-07 | 大庆市璞庆钻采设备制造有限公司 | General trial production tool for operation |
| CN115929294B (en) * | 2023-03-13 | 2023-05-26 | 大庆市璞庆钻采设备制造有限公司 | General trial production tool for operation |
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Effective date of registration: 20181228 Address after: 300309 Floor 3, No. 14-1 Wenyun Shuxiang Center, Northwest Side of Dongli Avenue and Jingfu Road Intersection, Dongli Lake Street, Dongli District, Tianjin Patentee after: Tianjin Xingtong Jiuheng Technology Co., Ltd. Address before: 071051 No. 1305 Qiyi Middle Road, Baoding City, Hebei Province Patentee before: China Geological Survey Hydrogeology Environment Geological Survey Center |