WO2014186700A1 - Flacon d'échantillonnage de fluide ayant un couvercle et un ensemble de valve - Google Patents

Flacon d'échantillonnage de fluide ayant un couvercle et un ensemble de valve Download PDF

Info

Publication number
WO2014186700A1
WO2014186700A1 PCT/US2014/038378 US2014038378W WO2014186700A1 WO 2014186700 A1 WO2014186700 A1 WO 2014186700A1 US 2014038378 W US2014038378 W US 2014038378W WO 2014186700 A1 WO2014186700 A1 WO 2014186700A1
Authority
WO
WIPO (PCT)
Prior art keywords
spout
pouch
flask
cap
valve
Prior art date
Application number
PCT/US2014/038378
Other languages
English (en)
Inventor
Todd M. Coleman
Gavin A. Steele
Original Assignee
Weatherford/Lamb, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Weatherford/Lamb, Inc. filed Critical Weatherford/Lamb, Inc.
Publication of WO2014186700A1 publication Critical patent/WO2014186700A1/fr

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/10—Devices for withdrawing samples in the liquid or fluent state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/50—Containers for the purpose of retaining a material to be analysed, e.g. test tubes
    • B01L3/505—Containers for the purpose of retaining a material to be analysed, e.g. test tubes flexible containers not provided for above
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/14—Process control and prevention of errors
    • B01L2200/141—Preventing contamination, tampering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00—Additional constructional details
    • B01L2300/04—Closures and closing means
    • B01L2300/046—Function or devices integrated in the closure
    • B01L2300/049—Valves integrated in closure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/02—Devices for withdrawing samples
    • G01N1/22—Devices for withdrawing samples in the gaseous state
    • G01N1/2273—Atmospheric sampling
    • G01N2001/2276—Personal monitors

Definitions

  • a dissolved gas bottle can be used to quantify the amount of gas in the water if the gas content is below saturation at atmospheric pressure (i.e., does not form bubbles).
  • a bag is preferred when the amount of gas in the water is above the saturation limit because both the dissolved gas and the free gas are quantitatively collected.
  • a dissolved gas bottle is designed to collect samples from domestic water wells, and the bottle can hold about 1 -liter, which makes it large enough for compositional and isotopic analysis of the dissolved gas.
  • the bottle has a cap-mounted septum so it is not necessary to open the bottle during analysis, which reduces the potential for contamination of the sample.
  • Each bottle also contains a bactericide capsule to prevent degradation of the gas.
  • Figure 1 illustrates a sample bag 10 according to the prior art. This bag 10 resembles the IsoBags® available from Isotech Laboratories, Inc. of Champaign, Illinois.
  • the bag 10 consists of a film pouch 12, which can come with a bactericide capsule 14 inside to prevent degradation of the sample.
  • a spout 20 is permanently affixed inside a side hole in the pouch 12 using retaining rings, gaskets, or other permanent fixtures.
  • the spout 20 also includes a self-closing type of valve 22, such as a luer valve used for medical purposes and available from Qosina Corp. of New York.
  • FIG. 1 illustrates a sample bag according to the prior art.
  • FIGs. 2A-2B show side views of a sample flask according to the present disclosure.
  • Fig. 3 illustrates the components of the disclosed flask separate from one another.
  • Figs. 4A-4D illustrate cross-section, top, side, and perspective views of the cap and valve assembly of the disclosed flask.
  • Fig. 5 illustrates an exploded view of the components for the cap and valve assembly.
  • FIGs. 6A-6F illustrates steps for sampling a water source with the disclosed flask.
  • a flask can be used to obtain, from a source, a liquid sample having dissolved hydrocarbon gas.
  • the flask has a pouch, a spout, a removable valve, and a removable cap and may also have a bactericide capsule.
  • the pouch is composed of a flexible material and is evacuated. The flexible material of the pouch is selected to mitigate permeability and interaction with the hydrocarbon gas.
  • the spout is sealably affixed to an opening of the pouch at a top end.
  • the removable valve is removably disposed in the spout and is operable to communicate the liquid sample with the dissolved hydrocarbon gas into the pouch.
  • the removable cap is removably disposed on the spout and retains at least a portion of the removable valve in the spout.
  • the pouch can have first and second sidewalls affixed along longitudinal edges and can have a bottom piece affixed to the first and second sidewalls at a bottom end of the pouch.
  • first and second sidewalls and the bottom piece expand outward to form a base on which the flask is supportable.
  • the removable cap can have a tab removably affixing the cap to the spout.
  • the removable valve can have first and second members. The member reduces dead volume between the spout and the pouch, and the second member controls the flow of the liquid sample into the pouch.
  • the first member can be disposed in the spout and can be held therein with the cap.
  • the first member can have an external seal sealing with the spout and has a fluid passage defined therethrough.
  • the second member can be disposed at least partially in the fluid passage of the first member and can an external seal sealing with the fluid passage. To control flow of the liquid sample, the second member has a self-closing valve element.
  • the spout is usable to fill the pouch with the liquid sample when the removable cap and the removable valve are selectively removed from the spout.
  • a capsule containing a bactericide can be disposed in the pouch.
  • a filing tube can be affixed to the removable valve and can have an adapter adapted to connect to the source.
  • a pouch composed of a flexible material is formed such that the pouch has top and bottom ends and has an opening at the top end.
  • a spout is sealably affixed to the opening of the pouch at the top end, and a removable valve is positioned in the spout for being operable to communicate the liquid sample into the pouch.
  • the removable valve is retained in the spout by positioning a removable cap on the spout.
  • the pouch is evacuated to eliminate contamination of the sample when collected.
  • a removable valve on a spout of a pouch is connected to the source, and the removable valve on the spout is opened.
  • the pouch is filled with the liquid sample passing through the removable valve and the spout.
  • a standable base forms on the pouch as sidewalls of the pouch expand outward from one another at a bottom end of the pouch during filling.
  • the removable valve on the spout is closed once the pouch is filled.
  • FIGS 2A-2B show side views of a sample container 30 according to the present disclosure.
  • the container 30 is a flask having a stand-up pouch 32 with a removable cap 50 and a removable valve 40 disposed in a spout 38.
  • the pouch 32 can have any suitable volume, such as 750 ml, for a particular sample.
  • the pouch 32 is shipped evacuated for later filling with the sample, and a bactericide capsule 34 can be pre- inserted in the pouch 32.
  • the pouch 32 is composed of a flexible material, such as a puncture-resistant plastic film with its back side colored white to assist in coloration observations of a sample.
  • the material for the pouch 32 is preferably suited for containing the light hydrocarbon gasses of interest that may be dissolved in water samples taken near areas of well fracturing operations. The material is therefore preferably impermeable to the hydrocarbons and does not interact with them. This will help the pouch 30 retain the gases close to the initial sampled level for an extended period of time after collection (i.e., even as long as 150 days or so).
  • One suitable material for the pouch 32 is a BIAX Nylon/Poly laminated barrier film that can be 5 mils thick or so.
  • One layer of the material may be 1 -mil of BIAX Nylon, and another layer may be 4-mil Ethylene vinyl alcohol (EVOH)/Linear Low-Density Polyethylene (LLDPE). Other configurations could be used.
  • EVOH Ethylene vinyl alcohol
  • LLDPE Linear Low-Density Polyethylene
  • the spout 38 is affixed to a spouted end 36 of the pouch 32 using heat molding, shrink fitting, adhesion, or other suitable technique.
  • the removable cap 50 and the removable valve 40 fit on the spout 38, and the valve 40 has a valve element 46 and an adapter 42.
  • the cap 50 has a tamper evident ring 54.
  • the valve element 46 can be a self-closing type of luer valve, such as available from Qosina Corp.
  • Various attachments can be used for proper filling of the pouch 32, such as described below.
  • the flask 30 is self-standing once filled.
  • the pouch 32 of flexible material has two sides 33a-b affixed together along their longitudinal edges.
  • heat seals of the polyethylene on the sidewalls 33a-b can affix the edges together.
  • the bottom end of the pouch 32 opposite the spouted end 36 has a bottom piece 37 affixed to the two sides 33a-b.
  • the two sides 33a-b expand outward from one another at the bottom of the pouch 32 and the pleated bottom piece 37 opens up to form a bottom of the flask 30, which allows the flask to hold a larger sample.
  • the larger the sample obtained will mitigate magnified errors of the amount of dissolved gas in the water, which would be the case if smaller samples be used.
  • lower edges 35a-b of the two sides 33a-b extend beyond the bottom piece 37 and form a base, which can help support the flask 30 upright.
  • the pouch 32 of the flask 30 narrows at the top toward the opening 36 to direct all collected gases toward the valve element 46 when it is standing upright. This aids in extraction and measurement of the gases during subsequent analysis.
  • the flask 30 can be substantially evacuated before use and can remain so over time, which can eliminate air contamination during later sample collection.
  • Figure 3 illustrates the components of the disclosed flask 30 separate from one another
  • Figures 4A-4D illustrate cross-section, top, side, and perspective views of the cap 50 and valve 40 of the disclosed flask 30
  • Figure 5 illustrates an exploded view of the components for the cap 50 and valve 40.
  • the cap 50 and valve 40 specifically includes the spout adapter 42, the valve element 46, and the cap 50.
  • the adapter 42 and valve element 46 are disclosed and shown as separate components, the valve 40 for the disclosed flask 30 can be an integral component combining the features of these two elements.
  • the adapter 42 has an O-ring 44 disposed on one end and has a central bore 43 therethrough.
  • the O-ring 44 is positioned at the inner end of the mouth 39 toward the inside of the pouch 32, as best shown in Figure 4A.
  • the adapter 42 inserts into the cylindrical mouth 39 of the spout 38 to form a sealed fit.
  • the spout adapter 42 with the inner positioned seal 44 can help minimize any void space in the pouch 32 beyond the inner end of the mouth 36 where measureable gas could be trapped.
  • the lower end of the adapter 42 can extend flush to the inner end of the spout's mouth 39, reducing the amount of void space in the mouth 39.
  • the central bore 43 of the adapter 42 is considerably narrower than the spout 38, reducing the void space.
  • the base 43c of the adapter 42 surrounding the bore 43 is conical in shape as best shown in Figure 4A. This conical shaped base 43c helps to direct all gases present in the flask's pouch 32 toward the top of the container for complete extraction for volume measurement of the gaseous components.
  • valve element 46 fits on the end of the valve element 46, and the valve element 46 inserts inside an expanded opening 45 in the end of the spout adapter 42 in a sealed fit. This arrangement further reduces the amount of void space at the spout 38.
  • the valve element 46 has a self-sealing element 47 disposed therein that can open and allow fluid flow into the valve element 46, central bore 43, and spout 38, but can prevent reverse fluid flow.
  • the cap 50 installs (e.g., press fits or threads) on the spout 38 to hold the spout adapter 42 in the spout 38.
  • the adapter 42 then extends through a central opening 52 of the cap 50.
  • the cap 50 can have a tamper-evident ring 54 that engages a shoulder of the spout 38 and tears from the cap 50 if the cap 50 is removed from the spout 38.
  • the flask 30 can be used in a number of sampling applications and is more versatile than existing sampling containers (e.g., bottles and bags). Primarily, the flask 30 is used for collecting water for determining dissolved gas of light hydrocarbon (e.g., methane, ethane, propane, etc.). The flask 30 helps to simplify and standardize the collection and determination of dissolved gas content in water wells.
  • dissolved gas of light hydrocarbon e.g., methane, ethane, propane, etc.
  • the flask 30 is more robust than the conventional bags so samples are less likely to be lost by damage and the like. Filing of the flask 30 is simplified so there is less chance of human error or variability in sampling.
  • the cap 50 and the valve 40 can remain affixed on the spout 38 when collecting water samples for dissolved gas as this helps ensure the integrity of the sample.
  • the tamper-evident ring 54 helps to identify and flag potential variability in sampling protocol.
  • the removable cap 50 and the valve 40 allow the flask 30 to be used for other sampling applications.
  • having the cap 50 and valve 40 be removable from the spout 38 allows the bactericide capsule 34 to be removed if certain water/gas sampling applications are to be performed.
  • the tamper-evident ring 54 will detach when this is done.
  • having the large mouthed spout 38, the adapter 42, and the valve element 46 in a modular arrangement as disclosed allows the flask 30 to be used selectively for sampling as desired.
  • the cap 50 and the valve 40 can be removed from the spout 38 by removing the cap 50 and then removing the valve element 46 and the adapter 42 together from the spout 38.
  • all of these components 42, 46, and 50 may be removed together as a unit. With these components 42, 46, and 50 removed, the open spout 38 can allow for faster filling of the flask 30 if unsealed filling is suitable for a particular type of sampling. It may even be desirable to remove the valve element 46 by itself from the adapter 42, but keep the adapter 42 in the spout 38 in some filling scenarios.
  • the adapter 42 and the valve element 46 be removed together.
  • the cap 50 can preferably be affixed to the adapter 42 so that the entire assembly of adapter 42, valve element 46, cap 50, and O-rings 44 and 48 can be removed as a single unit.
  • each component can be separately removable.
  • the valve element 46 is not intended to be removed from the adapter 42. Instead, a rib on the valve element 46 "snaps" into a grove or radial recess 43b in the adapter opening 45, which can affix the valve element 46 permanently in place in the adapter 42. A reverse arrangement could also be used.
  • the cap 50 snaps over a ridge 43a on the adapter 42 that also holds the cap 50 onto the adapter 42 so that the cap 50 is semi-permanently held in place.
  • the hole 52 in the cap 50 can be slightly undersized relative to the adapter 42 so the cap 50 can be held in place when it reaches the ridge 43a. With force the cap 50 can be separated from the adapter 42, but typically the entire assembly (42, 46, 50) would remain intact as a single unit and would be removed all together from the spout 38.
  • the pouch 32 has its spouted opening 36 that defines a slit-shaped opening at the top of the pouch 32 because the pouch 32 is made from adjacent sidewalls 33a-b affixed together.
  • the spout's opening 39 is preferably cylindrical for better fitting and sealing.
  • the cylindrical opening 39 allows the sealing from the O-ring 44 to situate deep inside the spout's opening 39 to reduce the amount of void volume in the flask 30.
  • Having the spout's opening 39 be cylindrical means that the spout 38 adapts the slit- shaped open end 36 of the pouch 32 to the preferred cylindrical shaped opening 39 for fitting and sealing with the valve 40.
  • FIGs 6A-6F illustrates steps for sampling a domestic water well with the disclosed flask 30.
  • the sampling protocol for the domestic water well involves initially purging the water line 60, as shown in Figure 6A. Then, as shown in Figure 6B, a fill tube 64 is attached to the water line 60 with an adapter 62, and the tube 64 is then purged, as shown in Figure 6C. At this point, the technician attaches the end fitting 65 of the tube 64 to the evacuated flask 30, as shown in Figure 6D.
  • the end fitting 65 is a male luer fitting that sealably mates to the flask's valve element 46, which is a female luer valve.
  • this end fitting 65 When this end fitting 65 is inserted into the valve element 46 (for filling), it simultaneously makes a seal to the valve element 46 and also depresses the actuator pin or self-sealing element 47 in the valve element 46, which opens it. If sampling for dissolved gas, the cap 50 and valve 40 are preferably kept on the spout 38, as noted above. The technician then fills the flask's pouch 32 to about 2/3 full, as shown in Figure 6E. Finally, the flask 30 is detached from the fill tube 64 so the filled flask 30 can be transported and stored for later analysis, as shown in Figure 6F.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Clinical Laboratory Science (AREA)
  • Hematology (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

La présente invention concerne un conteneur pour collecter des échantillons d'eau pour déterminer la présence de gaz dissous, qui comprend une poche de type flacon ayant un bec verseur. Un couvercle et une valve amovibles sont installés sur le bec verseur. La valve comporte un adaptateur qui s'ajuste dans un joint torique ou un autre joint d'étanchéité à l'intérieur de l'embouchure du bec verseur. La valve comporte un élément de valve, qui peut être un type de valve à fermeture automatique, unidirectionnel, qui s'ajuste dans un joint torique ou un autre joint d'étanchéité à l'intérieur de l'extrémité de l'adaptateur. Un couvercle du conteur s'ajuste sur l'adaptateur et se fixe au bec verseur pour maintenir la valve sur le bec verseur. Lors de l'utilisation, le couvercle peut être retiré de telle sorte que l'élément de valve et l'adaptateur puissent être retirés pour le remplissage de la poche. Autrement, le couvercle peut rester en place, de sorte que le remplissage peut être effectué à travers l'élément de valve. Une bague d'inviolabilité peut être prévue sur le couvercle pour garantir l'intégrité de l'échantillon contenu dans le flacon.
PCT/US2014/038378 2013-05-17 2014-05-16 Flacon d'échantillonnage de fluide ayant un couvercle et un ensemble de valve WO2014186700A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361824788P 2013-05-17 2013-05-17
US61/824,788 2013-05-17

Publications (1)

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WO2014186700A1 true WO2014186700A1 (fr) 2014-11-20

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PCT/US2014/038378 WO2014186700A1 (fr) 2013-05-17 2014-05-16 Flacon d'échantillonnage de fluide ayant un couvercle et un ensemble de valve

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043895A (ja) * 1998-08-03 2000-02-15 Tadashi Hagiwara 自立型袋状容器の支柱及びそれを用いた自立型袋状容器
WO2001036276A2 (fr) * 1999-11-10 2001-05-25 Scholle Corporation Sac repliable pour liquides et procede associe
JP2002053138A (ja) * 2001-07-02 2002-02-19 Tadashi Hagiwara 自立型容器
US6439429B1 (en) * 2001-07-05 2002-08-27 Seaquist Closures Foreign, Inc. Tamper-evident closure and spout fitment for a pouch
US20050061831A1 (en) * 2001-01-26 2005-03-24 Brown Dennis B. Multispout hydration system
US20050150917A1 (en) * 2004-01-12 2005-07-14 Dicks David H. Fitment for flexible container

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000043895A (ja) * 1998-08-03 2000-02-15 Tadashi Hagiwara 自立型袋状容器の支柱及びそれを用いた自立型袋状容器
WO2001036276A2 (fr) * 1999-11-10 2001-05-25 Scholle Corporation Sac repliable pour liquides et procede associe
US20050061831A1 (en) * 2001-01-26 2005-03-24 Brown Dennis B. Multispout hydration system
JP2002053138A (ja) * 2001-07-02 2002-02-19 Tadashi Hagiwara 自立型容器
US6439429B1 (en) * 2001-07-05 2002-08-27 Seaquist Closures Foreign, Inc. Tamper-evident closure and spout fitment for a pouch
US20050150917A1 (en) * 2004-01-12 2005-07-14 Dicks David H. Fitment for flexible container

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