CN103174414B - Original position fluid sampling apparatus in a kind of deep-well well - Google Patents
Original position fluid sampling apparatus in a kind of deep-well well Download PDFInfo
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Abstract
The invention discloses original position fluid sampling apparatus in a kind of deep-well well, be made up of well sampling unit and aboveground unit two parts: aboveground unit includes one group of air supply source being implemented to control by air conditioner and one group of container for collecting and sampling；Well sampling unit from top to bottom arranges one successively and has the window of receiving water of double; two return-stopping function, a upper packer, a drainage screen unit and a lower packet；The described window of receiving water with double; two return-stopping function includes a pedestal, offers three circulation passage on pedestal: what one was that Open Side Down enters aquaporin, and this enters aquaporin and is controlled unidirectional to flow into sampling flow liquid by check valve once；It two is the exhalant canal of opening upwards, and this exhalant canal is controlled unidirectional to flow out sampling flow liquid by check valve on, and is connected to the 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 connected with the air supply source of aboveground unit by air supply pipe.It can extract original position fluid sample in deep-well well easily and efficiently.
Description
Technical field
The present invention relates to a kind of downhole fluid sampling technique, when especially a kind of deep-well, small space, take the device of original position fluid in well.
Background technology
Deep formation fluid sample can provide Ground Fluid Chemistry feature, isotope composition, dissolving gas and microorganism feature etc., there is deep space physics, chemistry and bio information, deep-well is designed and developed and deep fluid monitoring is significant, be the important component part of deep-well engineering.But, locality descend original state fluid to possess sizable difficulty, first, drill and become drilling fluid in well process can produce to pollute to formation fluid；Secondly, formation fluid can be produced disturbance by the process means in sampling process, affects its original state；3rd, down-hole narrow space, and there is significantly high head of liquid, sampling equipment is needed rational structural design and significantly high performance requirement by deep fluid sampling.At present, the domestic pneumatic sampling technique of downhole fluid but without the degree of depth more than 500 meters and equipment.
Summary of the invention
It is an object of the invention to provide original position fluid sampling apparatus in a kind of deep-well well, it can extract original position fluid sample in deep-well well easily and efficiently.
For achieving the above object, the present invention takes following design:
Original position fluid sampling apparatus in a kind of deep-well well, is made up of well sampling unit and aboveground unit two parts, and described aboveground unit includes one group of air supply source being implemented to control by air conditioner and one group of container for collecting and sampling；
Described well sampling unit from top to bottom arranges one successively and has the window of receiving water of double; two return-stopping function, a upper packer, a drainage screen unit and a lower packet；The described window of receiving water with double; two return-stopping function includes a pedestal, offers three circulation passage on pedestal: what one was that Open Side Down enters aquaporin, and this enters aquaporin and is controlled unidirectional to flow into sampling flow liquid by check valve once；It two is the exhalant canal of opening upwards, and this exhalant canal is controlled unidirectional to flow out sampling flow liquid by check valve on, and it is connected to the 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 connected with the air supply source of aboveground unit by air supply pipe.
In described deep-well well in original position fluid sampling apparatus, described upper packer and lower packing are respectively adopted the one in water-swellable formula packer, inflatable packer or mechanical swelling type packer.
In described deep-well well, the upper packer of original position fluid sampling apparatus adopts inflatable packer, and this inflatable packer adopts bias to cross pipeline packer and is preferred, and including a packing element, packing element two ends are tightly connected a packing element set respectively；Wholeheartedly pipe is placed in packing element and eccentric is put, and this heart pipe overlaps tight engagement maintenance by the packing element of a pair end cap with packing element two ends.
In described deep-well well in original position fluid sampling apparatus, described packing element two ends are fixed with screw thread, adopt seal with screwed joint with packing element set.This screw thread can be integrated with packing element metal threaded after one-piece casting.
Described bias is crossed in pipeline packer, and the composition surface of described packing element and each packing element set is that non-monoplane engages.
In described deep-well well in original position fluid sampling apparatus, described probe tube and air supply pipe are adopted high-pressure hose.
In described deep-well well in original position fluid sampling apparatus, described probe tube and the diameter of air supply pipe are respectively less than 12.5mm, and window of receiving water thickness is less than 25mm, and window of receiving water width is less than 35mm.
In described deep-well well in original position fluid sampling apparatus, described air supply source be one group by air conditioner implement control gas output high pressure N2Gas cylinder.This high pressure N2High-pressure air source pressure in gas cylinder is more than 30Mpa, and supply gas pressure is less than 20Mpa.
In described deep-well well in original position fluid sampling apparatus, described drainage screen unit adopts two-layer stainless steel filter screen, and the order number of drainage screen is 20-50 order.
In deep-well well of the present invention, original position fluid sampling apparatus has wide application and application space, as, in carbon dioxide geological storage, being used for monitoring down-hole CO 2 fluid storage, diffusion, migration rule, monitoring carbon dioxide leakage risk and leak path.In the contamination by nuclear waste monitoring of underground, for monitoring the storage of deep formation nuke rubbish, diffusion and transport conditions and the Environmental capacity monitoring etc. of nuke rubbish, it is possible to offer help for protection deep geologic environment.
The invention have the advantage that
1. depth selection can reach 2000m, has filled up domestic small-diameter deep gas well gas dynamic sampling art blank.
2. packer packing is every sampling target zone fluid, and sample point position is accurate, and the sample representativeness of acquisition is good.Noble gas drives sampling, and the sample gathered in sampling process is pollution-free.
3. sampler volume is little, it is possible to other monitoring system together with Technology Integration, it is achieved the purpose that in a bite well, multilamellar is independently monitored and sampled.
4. sampling amount is big, and during depth selection 500m, single sampling amount is up to 20L-25L, and during depth selection 2000m, single sampling amount is up to 80L-100L.
5., after sampling completes, well sampling device can propose safely and can reuse.
6. sampler advanced technology, simple in construction, stable performance, easy to operate and with low cost, is suitable to Spread in China.
Accompanying drawing explanation
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 (master looks) 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 crosses pipeline packer construction schematic diagram (master looks).
Fig. 4 is that in deep-well well of the present invention, the bias of original position fluid sampling apparatus crosses pipeline packer construction schematic diagram (side-looking).
In Fig. 1: 1-plug；2-lower packet；3-drainage screen；4-upper packer；5-window of receiving water；6-probe tube；7-air supply pipe；8-high pressure N2Gas cylinder；9-air conditioner；10-sterile sampling bottle.
In Fig. 2: 51-pedestal；52-check valve top connection；53-check valve lower contact；Stainless steel ball under 54-；55-plug；56-pad；57-crosses water baffle ring；58-pipe joint；The upper stainless steel ball of 59-.
In Fig. 3, Fig. 4: 41-head bolts；42-end cap；43-cable fill；44-end cap O RunddichtringO；45-heart pipe O RunddichtringO；46-packing element set；47-packing element；48-heart pipe；49-is metal threaded.
Below in conjunction with drawings and the specific embodiments, the present invention is described further.
Detailed description of the invention
Shown in Figure 1, for original position fluid sampling apparatus one embodiment in deep-well well of the present invention, in this embodiment, in deep-well well, original position fluid sampling apparatus is made up of downhole unit and aboveground unit two parts, downhole unit is responsible for location sampling target zone, isolate non-sampled fluid, it is allowed to sampled fluid enters sampler etc., mainly includes plug 1, lower packet 2, drainage screen 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 receiving the sampled fluid collecting ground, mainly includes high pressure N2Gas cylinder 8, air conditioner 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 made up of pedestal 51, check valve top connection 52, check valve lower contact 53, stainless steel ball 54, plug 55, pad 56, excessively water baffle ring 57 and pipe joint 58.Window of receiving water has double; two return-stopping function.Allow sampled fluid by the lower check valve of check valve top connection 52, check valve lower contact 53 and lower stainless steel ball 54 composition, a part of fluid enters air supply pipe 7, another part fluid enters by upper stainless steel ball 59 and crosses the upper check valve that water baffle ring 57 forms, and enters probe tube 6.In purging sampling process, fluid is stoped to backflow in sampled well.
Described probe tube 6 adopts high-pressure hose, effect to be in the sampling preparatory stage, holds the fluid being entered sampler by window of receiving water, in purging sample phase, bears sampled fluid height water column pressure, and conveying sampled fluid is to ground.The diameter of probe tube 6 is preferred less than 12.5mm, pressure 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 being entered sampler by window of receiving water, in purging sample phase, bears driving gas high pressure power, and conveying sampled fluid is to probe tube.Air supply pipe 7 diameter, less than 12.5mm, pressure also should be greater than 20Mpa.
Described upper (lower) packer 4(2) adopt water-swellable formula packer, inflatable packer or mechanical swelling type packer, effect is the more than sampling horizon fluid of (below) in packing pit shaft, upper and lower packer group in a pair, by sampled fluid and the isolation of non-sampled fluid, it is thus achieved that representative good original position fluid sample.For realizing the goal of the invention of the present invention, this upper (lower) packer has been done well-designed by the present invention, referring to shown in Fig. 3 and Fig. 4, this inflatable packer adopts a bias to cross pipeline packer, mainly include an outer packing element, wholeheartedly pipe 48 and a pair end cap 42, heart pipe 48 is placed in outer packing element and is fixed on eccentric position, this heart pipe 48 is by a pair end cap 42 and outer packing element tight engagement maintenance, between heart pipe 48 and end cap 42, it is provided with heart pipe O RunddichtringO 45, between packing element and end cap 42, is provided with end cap O RunddichtringO outside.In diagrammatically shown embodiment, packing element set 46 combination that outer packing element is engaged by packing element 47 and two ends is constituted, and the composition surface of packing element 47 and each packing element set 46 is that non-monoplane engages, this composition surface is preferred with mutual penetration type, and metal threaded 49 is integrated with packing element one-piece casting.By this design so that it is also very good that upper (lower) packer insulates effect in deep-well well, not easily shifts, it is ensured that sample point position is very accurate, to obtain representative good sample.
The effect of described drainage screen 3 is the impurity in filtering and sampling fluid, it is prevented that large granular impurity enters and destroys sampler.Drainage screen can adopt two-layer stainless steel filter screen, and the order number of drainage screen is 20-50 order.
Being used for supplying gases at high pressure for the source of the gas of original position fluid sampling apparatus supply in deep-well well of the present invention, gases at high pressure enter air supply pipe 7 by air conditioner 9, and then enter sampler.Source of the gas can adopt high-pressure inert gas N2, N2Contacting with sampled fluid and chemical reaction does not occur, the representativeness of sampled fluid is ensured.High-pressure air source pressure more than 30Mpa, supply gas pressure less than 20Mpa, the normal operation of original position fluid sampling apparatus in deep-well well when to ensure deep-well.
Described sterile sampling bottle 10 is for collecting and sampling fluid, through noble gas N before sampling2Rinse, seal after sampling.
In deep-well well of the present invention, the work process of original position fluid sampling apparatus is:
First it is sampled device to install:
(1) the sampling preparatory stage, referring to Fig. 1, first on the ground plug plug 1, lower packet 2, drainage screen 3, upper packer 4, window of receiving water 5, probe tube 6 and air supply pipe 7 have been linked in sequence the assembling of well sampling cell mesh；
(2) the well sampling unit connected is transferred to specifying sampling horizon in company with drill string or oil pipe, drill string or fix by dedicated tying silk between oil pipe and well sampling unit；
(3) high pressure N it is sequentially completed on the ground2Gas cylinder 8 is connected with air conditioner 9, and air conditioner 9 and air supply pipe 7 connect, and probe tube 6 and sample bucket connect.
Sampling:
(1) by controlling Fig. 1 air actuator 9, air supply pipe tube head and probe tube tube head there is the N of normal atmosphere with storage2Gas cylinder connects, and formation fluid is entered in probe tube 6 and air supply pipe 7 by drainage screen 3, sampling window 5；
(2) open high-pressure air source valve 8, inject high pressure N from air supply pipe tube head2Gas cylinder 8, window of receiving water 5 check valve is automatically switched off, and formation fluid slowly flows out from probe tube 6, by the fluid-evacuation that collects to sample bucket；
(3) repeating step (1), more than (2) three times (determining number of repetition as required), replace formation fluid, rinse sampler, the fluid flowed out to probe tube 6 reaches requirement；
(4) repeat step (1), (2) and sampled fluid is collected entrance sterile sampling bottle 10；
(5) repeat step (1), (2) after having sampled, rinse sampler, prepare for sampling next time.
The various embodiments described above can in addition some changes without departing from the scope of the invention, therefore description above is comprised and should be regarded as exemplary, and is not used to the protection domain of restriction the present patent application patent.
Claims (4)
1. an original position fluid sampling apparatus in deep-well well, is made up of well sampling unit and aboveground unit two parts, and described aboveground unit includes one group of air supply source being implemented to control by air conditioner and one group of container for collecting and sampling；It is characterized in that:
Described well sampling unit from top to bottom arranges one successively and has the window of receiving water of double; two return-stopping function, a upper packer, a drainage screen unit and a lower packet；The described window of receiving water with double; two return-stopping function includes a pedestal, offers three circulation passage on pedestal: what one was that Open Side Down enters aquaporin, and this enters aquaporin and is controlled unidirectional to flow into sampling flow liquid by check valve once；It two is the exhalant canal of opening upwards, and this exhalant canal is controlled unidirectional to flow out sampling flow liquid by check valve on, and it is connected to the 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 connected with the air supply source of aboveground unit by air supply pipe；Described probe tube and air supply pipe adopt high-pressure hose, and the diameter of two kinds of pipes is less than 12.5mm；
Described upper packer and lower packing are respectively adopted inflatable packer, and wherein, what this upper packer adopted was off pipeline packer, and including a packing element, packing element two ends are tightly connected a packing element set respectively；Wholeheartedly pipe is placed in packing element and eccentric is put, and this heart pipe is by packing element set tight engagement with packing element two ends of a pair end cap maintenance, and the composition surface of described packing element and each packing element set is non-monoplane joint, and both composition surfaces are stretched into mutually；Described packing element two ends are fixed with screw thread, and this screw thread is integrated with packing element metal threaded after one-piece casting, and it adopts seal with screwed joint with packing element set.
2. original position fluid sampling apparatus in deep-well well according to claim 1, it is characterised in that: described window of receiving water thickness is less than 25mm, and window of receiving water width is less than 35mm.
3. original position fluid sampling apparatus in deep-well well according to claim 1, it is characterised in that: described air supply source be one group by air conditioner implement control gas output high pressure N2Gas cylinder；Described high pressure N2High-pressure air source pressure in gas cylinder is more than 30Mpa, and supply gas pressure is less than 20Mpa.
4. original position fluid sampling apparatus in deep-well well according to claim 1, it is characterised in that: described drainage screen unit adopts two-layer stainless steel filter screen, and the order number of drainage screen is 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 true CN103174414B (en) | 2016-07-13 |
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| 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 |
| 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 |
| 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 |
| CN112539965B (en) * | 2020-11-25 | 2022-10-21 | 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 |
| 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 |
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