AU2007255175B2 - In-borehole gas monitor apparatus and method - Google Patents
In-borehole gas monitor apparatus and method Download PDFInfo
- Publication number
- AU2007255175B2 AU2007255175B2 AU2007255175A AU2007255175A AU2007255175B2 AU 2007255175 B2 AU2007255175 B2 AU 2007255175B2 AU 2007255175 A AU2007255175 A AU 2007255175A AU 2007255175 A AU2007255175 A AU 2007255175A AU 2007255175 B2 AU2007255175 B2 AU 2007255175B2
- Authority
- AU
- Australia
- Prior art keywords
- gas
- igm apparatus
- igm
- borehole
- detector
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000007788 liquid Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 7
- 230000004044 response Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 83
- 238000005070 sampling Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004868 gas analysis Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B1/00—Dumping solid waste
- B09B1/006—Shafts or wells in waste dumps
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Geophysics (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Measuring Fluid Pressure (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
A self-contained in-borehole gas monitor (IGM) apparatus (8) comprising a detector for measuring a gas variable, and a controller (54) configured to automatically periodically use the detector to measure a gas variable.
Description
WO 2007/141512 PCT/GB2007/002061 In-Borehole Gas Monitor Apparatus and Method Field of the Invention 5 The present invention relates to in-borehole gas monitor (IGM) apparatus and methods. Background to the Invention 10 The monitoring of gas concentrations, and in particular methane and carbon dioxide, generated by landfill and associated sites is becoming a more common legislative requirement due to the potential problems these gases pose, such as the risk of explosion and migration into 15 buildings. At present, the majority of landfill gas analysis is achieved either through spot sampling of through the use of large expensive fixed position monitoring stations. More recently it has been recognised that gas production and migration responds to 20 environmental factors such as barometric pressure and groundwater movement, with the accompanying realisation that spot sampling will often miss such changes. It is an aim of preferred embodiments of the present 25 invention to address, overcome or obviate a disadvantage of the prior art, whether such prior art or disadvantage is referred to herein or otherwise. Summary of the Invention 30 According to the present invention in a first aspect, there is provided a self-contained in-borehole gas monitor (IGM) apparatus comprising a detector for measuring a gas 2 variable, and a controller configured to automatically periodically use the detector to measure a gas variable; wherein the IGM apparatus further comprises a water detector configured to detect liquid water in or in the 5 proximity of the IGM apparatus, and whereby the controller is configured to undertake a water detection response if liquid water is detected. The water detection response may be to shut down the IGM apparatus, to transmit a warning signal, to illuminate a 10 warning light or otherwise. Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive 15 sense; that is to say, in the sense of "including, but not limited to". The gas variable can, without limitation, be one of the presence or absence of a particular gas, a gas concentration level, a gas pressure, a gas temperature, 20 etc. Suitably, the IGM apparatus further comprises a through vent pipe and a vent valve for controllably opening the vent pipe, which vent pipe, when open, provides a gas flow path to the exterior of the IGM apparatus. In use, this 25 provides a mechanism for the borehole gases to be vented to atmosphere and borehole gas to equilibriate with atmospheric gases. Suitably, the IGM apparatus is configured to automatically periodically open the vent valve.
3 Suitably, the IGM apparatus is configured to be locatable substantially within a borehole liner. Suitably, the IGM apparatus is configured whereby the majority of the volume of the IGM apparatus is locatable within a borehole liner. 5 Suitably, the IGM apparatus is configured whereby over 75% of the volume of the IGM apparatus is locatable within a borehole liner. Suitably, the IGM apparatus is configured whereby over 90% of the volume of the IGM apparatus is locatable within a borehole liner. Suitably, the IGM 10 apparatus comprises a body portion for location within a borehole liner, which body portion is no more than 50mm across. Suitably, the IGM apparatus comprises a power cell. Suitably, the IGM apparatus comprises a gas flow path from 15 a gas entry region to a gas variable detector. Suitably, a gas pressure sensor is configured to measure the gas pressure in the gas flow path. Suitably, the gas flow path is from the gas entry region to the gas entry region. That is, the tested gas is re-circulated back to the borehole 20 in use. Suitably, the IGM apparatus comprises an entry valve configured to control gas flow into the gas flow path. Suitably, the IGM apparatus comprises an exit valve configured to control gas flow out of the gas flow path. Suitably, the IGM apparatus comprises a pump configured to 25 pump gas from a gas entry region of the IGM apparatus to a gas variable detector. Suitably, the pump is configured to pump a tested gas away from the gas variable detector. Suitably, the IGM apparatus comprises a pressure sensor configured to measure atmospheric pressure in use.
4 Suitably, the IGM apparatus further comprises an on-board memory to store data generated by the IGM apparatus. Suitably, the IGM apparatus further comprises a filter before the entry to the gas flow path for filtering one or 5 more of particulates and moisture. Suitably, the IGM apparatus further comprises a borehole cap for securing the IGM apparatus to a borehole lining. Suitably, there is provided a gas-tight seal between borehole cap and the borehole lining. It will be 10 appreciated that a "gas-tight" seal may not prevent the leakage of all gases entirely, but reduces them to an extent that measurements are not materially affected. Suitably, the IGM apparatus comprises a gas flow path from a gas entry region to a gas variable sensor, an entry 15 valve for controlling gas entry to the gas flow path, an exit valve for controlling gas exit from the end of the gas flow path distal from the gas entry and a pump for pumping borehole gas into the gas variable sensor. Suitably, the IGM apparatus is configured to take an 20 atmospheric pressure reading and a borehole pressure reading at the same time. It will be appreciated that a reading "at the same time" may not be exactly simultaneously, but will be within a close enough time window to allow the pressures to be considered to be at 25 the same time for analysis purposes. Suitably, the IGM apparatus comprises means for communicating data externally of the apparatus.
5 Suitably, the IGM apparatus is portable. By "portable" we mean that is can be carried by hand by a user. Suitably, the IGM apparatus comprises a water level detector. Suitably, the water level detector comprises a wired 5 pressure transducer. Suitably, the water level detector is connected to the bottom of the IGM apparatus to be suspended into the borehole in use. According to the present invention in a second aspect, there is provided a self-contained in-borehole gas monitor 10 (IGM) method comprising a controller configured to automatically periodically measure a gas variable; wherein the IGM apparatus further comprises a water detector configured to detect liquid water in or in the proximity of the IGM apparatus, and whereby the controller 15 is configured to undertake a water detection response if liquid water is detected. Brief Description of the Drawings The present invention will now be described, by way of example only, with reference to the drawings that follow; 20 in which: Figure 1 is a schematic illustration of a borehole site with an in-borehole gas monitor according to the present invention. Figure 2 is a schematic cross-sectional elevation of an 25 in-borehole gas monitor apparatus according to the present invention.
5a Description of the Preferred Embodiments Referring to Figure 1 of the accompanying drawings, there is shown a borehole 2 in ground consisting of a landfill site. The borehole 2 is supported by a liner 4 in which a 5 plurality of side-holes 6 are located to allow for sampling.
WO 2007/141512 PCT/GB2007/002061 6 Referring to Figure 2 of the accompanying drawings, there is shown an in-borehole gas monitor (IGM) apparatus 8 including a cap 10. The cap 10 comprises an inner bore 12 for receiving the IGM apparatus 8. The cap 10 includes an 5 exterior screw thread 14 for engaging with a corresponding interior screw thread (not shown) on liner 4. Alternatively, the cap can be made as part of the housing. A seal 16 is provided for fitting the IGM apparatus 8 in a borehole when a suitable screw thread is not available for 10 the cap 10 to be used. The IGM apparatus 8 consists of a body portion 17 which is a self-contained unit meeting environmental rating IP-68, i.e. essentially waterproof. The IGM apparatus 8 comprises 15 a top 30, an external tube 32 and a gas-porous end plug 34. The external diameter of tube 32 in this embodiment is approximately 40mm allowing for it to be inserted into a typical borehole liner. In this embodiment of the invention, the length of tube 32 is 600mm, but may be 20 less. The IGM apparatus 8 further comprises a gas inlet 36 controlled by an entry valve 38, which gas inlet leads to a water and particulate filter 40 for removing any excess 25 moisture and/or particles from the ingressed gases. A suitable filter is an in-line particulate and moisture filter such as that available from Geotechnical Instruments of Sovereign House, Queensway, Leamington Spa, United Kingdom. A fluid flow path runs from the filter 40 30 to a gas pump 42 to a series of gas variable analysis chambers 44, 46, 48, 50 and then to an outlet valve 52.
WO 2007/141512 PCT/GB2007/002061 7 Each analysis chamber has a corresponding analyser (not shown) for measuring a gas variable. Any suitable variable can be measured, the analysers typically being used to monitor hydrocarbons (especially methane), carbon 5 dioxide, oxygen and hydrogen sulphide concentrations. The IGM apparatus 8 further comprises a combined controller and memory 54 for controlling operation of the apparatus 8 and a power cell (battery) 56 making the 10 operation of the apparatus 8 self-contained, i.e. not reliant on data communication with or power from an external source. A gas pressure sensor 58 is connected to the gas flow path 15 for measuring the gas pressure therein. A further gas pressure sensor 60 is provided for measuring atmospheric pressure through a hole 62 in the top 30. The gas pressure data from both sensors 58 and 60 is provided to the controller 54. 20 A vent pipe 64 is provided running through the apparatus 8 from the end-plug 34 to an outlet 66 through the top 30 to atmosphere. A vent pipe valve 68 is provided for the vent pipe 64 to control whether it is open to atmosphere. 25 Also shown is a water detector 70, which detects the presence or proximity of liquid water in the apparatus and upon such detection transmits a signal to the controller 54. A conductance sensor is used to determine a liquid 30 water presence. Further, a water level detector (not shown) can be connected to the bottom of the IGM apparatus and suspended WO 2007/141512 PCT/GB2007/002061 8 therebelow in use into the borehole. As wired pressure transducer can be used. The top 30 includes a connector 72 allowing data 5 communication with a remote device and unit activation. Additionally, a pressure sensor can be attached here for monitoring borehole water level.. The IGM apparatus 8 is mounted in a borehole 2, within a 10 borehole liner with the cap 10 providing a gas-tight seal. Over time, gases will build up in the borehole 2. The IGM apparatus 8 is configured, specifically by programming of the controller 54, to automatically and periodically test 15 a gas sample from the borehole. The process by which this is undertaken will now be described. Entry valve 38 and exit valve 52 are both opened and pump 42 is activated to pump gas from the borehole through the 20 gas flow path to ensure the gas variable sensors have an up to date gas sample from the borehole. The end-plug 34 and surrounding external area are the gas entry region, i.e. the area from which, in use, gas enters the apparatus. Moisture and particulates are removed by a 25 filter 40. A gas pressure measurement is made by gas pressure sensor 58 and a reference measurement of atmospheric pressure is made by pressure sensor 60. This data is stored in the 30 controller/memory 54. Entry and exit valves 38 and 52 are then closed.
WO 2007/141512 PCT/GB2007/002061 9 Gas variable measurements are carried out by the gas sensors. Any appropriate variable can be monitored including one or more of the presence or absence of a particular gas, a gas concentration level, a gas pressure, 5 moisture content in a gas, etc. The data from the gas variable measurements is stored in the controller/memory 54. A timer in the controller 54 is re-set so that a 10 subsequent periodic measurement can be made. The data stored in controller/memory 54 can be downloaded over a hard-wired connection via the connector 72 or by wireless transmission. This connection can also be used 15 to program the controller 54 to operate the apparatus 8 as desired. For instance, variables such as the frequency of sampling, whether sampling is regular or irregular, whether there should be a periodic venting to atmosphere, etc can be set. 20 On an ongoing basis if the water detector 70 detects the presence of water in the apparatus, a water detection signal is sent to the controller 54 which can take an appropriate step, such as deactivating the apparatus 8, 25 transmitting an alert signal, illuminating a warning light etc. This can both protect the apparatus 8 from damage and avoid contaminated readings being made. As gases build up in the borehole over time, it can be 30 useful to open the borehole to atmosphere to reduce the pressure therein, but also to provide the opportunity to, in effect, re-start the sampling operation by allowing the borehole to equilibriate to atmosphere. Thus, the base WO 2007/141512 PCT/GB2007/002061 10 line for any monitoring can be re-set and an analysis of the variation of gas variables over time can be undertaken. The apparatus 8 can be configured to vent the borehole to atmosphere periodically or on instruction. 5 Thus, there is provided a portable, self-contained IGM apparatus that can be conveniently deployed in a borehole to take periodic data readings of gas variables in the borehole. 10 Attention is directed to all papers and documents which are filed concurrently with or previous to this specification in connection with this application and which are open to public inspection with this 15 specification, and the contents of all such papers and documents are incorporated herein by reference. All of the features disclosed in this specification (including any accompanying claims, abstract and 20 drawings), and/or all of the steps of any method or process so disclosed, may be combined in any combination, except combinations where at least some of such features and/or steps are mutually exclusive. 25 Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. Thus, unless expressly stated otherwise, each 30 feature disclosed is one example only of a generic series of equivalent or similar features.
WO 2007/141512 PCT/GB2007/002061 11 The invention is not restricted to the details of the foregoing embodiment(s). The invention extends to any novel one, or any novel combination, of the features disclosed in this specification (including any 5 accompanying claims, abstract and drawings) , or to any novel one, or any novel combination, of the steps of any method or process so disclosed.
Claims (21)
1. A self-contained in-borehole gas monitor (IGM) apparatus comprising a detector for measuring a gas 5 variable, and a controller configured to automatically periodically use the detector to measure a gas variable; wherein the IGM apparatus further comprises a water detector configured to detect liquid water in or in the proximity of the IGM apparatus, and whereby 10 the controller is configured to undertake a water detection response if liquid water is detected.
2. The IGM apparatus as claimed in claim 1, wherein the IGM apparatus further comprises a through vent pipe 15 and a vent valve for controllably opening the vent pipe, which vent pipe, when open, provides a gas flow path to the exterior of the IGM apparatus.
3. The IGM apparatus as claimed in claim 2, wherein the 20 IGM apparatus is configured to automatically periodically open the vent valve.
4. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus is configured to be 25 locatable substantially within a borehole liner.
5. The IGM apparatus as claimed in claim 4, wherein the IGM apparatus is configured whereby over 75% of the volume of the IGM apparatus is locatable within a 30 borehole liner.
6. The IGM apparatus as claimed in claim 5, wherein the IGM apparatus is configured whereby over 90% of the 13 volume of the IGM apparatus is locatable within a borehole liner.
7. The IGM apparatus as claimed in any preceding claim, 5 wherein the IGM apparatus comprises a body portion for location within a borehole liner, which body portion is no more than 50mm across.
8. The IGM apparatus as claimed in any preceding claim, 10 wherein a gas pressure sensor is configured to measure the gas pressure in the gas flow path from a gas entry to a gas variable detector.
9. The IGM apparatus as claimed in claim 8, wherein the 15 IGM apparatus comprises an exit valve configured to control gas.flow out of the gas flow path.
10. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus comprises a pump configured 20 to pump gas from a gas entry region of the IGM apparatus to a gas variable detector.
11. The IGM apparatus as claimed in claim 10, wherein the pump is configured to pump a tested gas away from the 25 gas variable detector.
12. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus comprises a pressure sensor configured to measure atmospheric pressure in use. 30
13. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus further comprises a filter 14 before the entry to the gas flow path for filtering one or more of particulates and moisture.
14. The IGM apparatus as claimed in any preceding claim, 5 wherein the IGM apparatus further comprises a borehole cap for securing the IGM apparatus to a borehole lining.
15. The IGM apparatus as claimed in claim 14, wherein 10 there is provided a gas-tight seal between borehole cap and the borehole lining.
16. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus comprises a gas flow path 15 from a gas entry region to a gas variable sensor, an entry valve for controlling gas entry to the gas flow path, an exit valve for controlling gas exit from the end of the gas flow path distal from the gas entry and a pump for pumping borehole gas into the gas variable 20 sensor.
17. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus is configured to take an atmospheric pressure reading and a borehole pressure 25 reading at the same time.
18. The IGM apparatus as claimed in any preceding claim, wherein the IGM apparatus comprises a water level detector. 30
19. The IGM apparatus as claimed in claim 18, wherein the water level detector is connected to the bottom of the 15 IGM apparatus to be suspended into the borehole in use.
20. A self-contained in-borehole gas monitor (IGM) method 5 comprising a controller configured to automatically periodically measure a gas variable; wherein the IGM apparatus further comprises a water detector to detect liquid water in or in the proximity of the IGM apparatus, and whereby the controller undertakes a 10 water detection response if liquid water is detected.
21. A self-contained in-borehole gas monitor apparatus or method substantially as herein described with reference to any one of the embodiments of the 15 invention illustrated in the accompanying drawings and/or examples.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0611527.3 | 2006-06-10 | ||
| GBGB0611527.3A GB0611527D0 (en) | 2006-06-10 | 2006-06-10 | In-borehole gas monitoring apparatus and method |
| PCT/GB2007/002061 WO2007141512A1 (en) | 2006-06-10 | 2007-06-06 | In-borehole gas monitor apparatus and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2007255175A1 AU2007255175A1 (en) | 2007-12-13 |
| AU2007255175B2 true AU2007255175B2 (en) | 2012-10-18 |
Family
ID=36745678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2007255175A Ceased AU2007255175B2 (en) | 2006-06-10 | 2007-06-06 | In-borehole gas monitor apparatus and method |
Country Status (17)
| Country | Link |
|---|---|
| US (1) | US8186211B2 (en) |
| EP (1) | EP2027363B1 (en) |
| JP (1) | JP5097202B2 (en) |
| CN (1) | CN101466916B (en) |
| AT (1) | ATE482325T1 (en) |
| AU (1) | AU2007255175B2 (en) |
| BR (1) | BRPI0711663A2 (en) |
| CA (1) | CA2654052C (en) |
| DE (1) | DE602007009380D1 (en) |
| DK (1) | DK2027363T3 (en) |
| ES (1) | ES2353559T3 (en) |
| GB (1) | GB0611527D0 (en) |
| MX (1) | MX2008015755A (en) |
| PL (1) | PL2027363T3 (en) |
| RU (1) | RU2449116C2 (en) |
| WO (1) | WO2007141512A1 (en) |
| ZA (1) | ZA200900183B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB0915150D0 (en) * | 2009-09-01 | 2009-10-07 | Intelisys Ltd | In-borehole gas monitor apparatus and method |
| US9062536B2 (en) | 2013-01-02 | 2015-06-23 | Graco Minnesota Inc. | Devices and methods for landfill gas well monitoring and control |
| US10029291B2 (en) | 2013-01-02 | 2018-07-24 | Q.E.D. Environmental Systems, Inc. | Devices and methods for landfill gas well monitoring and control |
| US20140260511A1 (en) * | 2013-03-13 | 2014-09-18 | Rosemount Analytical Inc. | Diffuser diagnostic for in-situ flue gas measurement device |
| US9448201B2 (en) | 2013-03-29 | 2016-09-20 | Rosemount Analytical, Inc. | In situ probe with improved diagnostics and compensation |
| US10400560B2 (en) | 2013-11-04 | 2019-09-03 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| US10029290B2 (en) | 2013-11-04 | 2018-07-24 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| US10576514B2 (en) | 2013-11-04 | 2020-03-03 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| US10576515B2 (en) | 2013-11-04 | 2020-03-03 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| CN104879124B (en) * | 2015-06-11 | 2018-07-10 | 贵州润晋碳元素材料有限公司 | A kind of hand-held thermal expansion stone cracking agent drilling defects detection device |
| CA3240725A1 (en) | 2016-03-01 | 2017-09-08 | Loci Controls, Inc. | Designs for enhanced reliability and calibration of landfill gas measurement and control devices |
| US10705063B2 (en) | 2016-03-01 | 2020-07-07 | Loci Controls, Inc. | Designs for enhanced reliability and calibration of landfill gas measurement and control devices |
| US11486243B2 (en) | 2016-08-04 | 2022-11-01 | Baker Hughes Esp, Inc. | ESP gas slug avoidance system |
| CA3047180A1 (en) | 2016-10-05 | 2018-04-12 | Ambisense Ltd. | Adaptive system for measuring concentration and flow rate of ground gas |
| CN106846759A (en) * | 2017-04-18 | 2017-06-13 | 北京中昌天盛科技有限公司 | Sensing device protection system |
| WO2019173132A1 (en) | 2018-03-06 | 2019-09-12 | Loci Controls, Inc. | Landfill gas extraction control system |
| EP3860774A4 (en) | 2018-10-01 | 2022-06-22 | Loci Controls, Inc. | LANDFILL GAS EXTRACTION SYSTEMS AND PROCESSES |
| WO2021154523A1 (en) | 2020-01-29 | 2021-08-05 | Loci Controls, Inc. | Automated compliance measurement and control for landfill gas extraction systems |
| US10989048B1 (en) * | 2020-05-20 | 2021-04-27 | Halliburton Energy Services, Inc. | Systems and methods to detect and quantify contaminants and components of a wellbore servicing fluid |
| US11623256B2 (en) | 2020-07-13 | 2023-04-11 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| US12090532B2 (en) * | 2020-07-13 | 2024-09-17 | Loci Controls, Inc. | Devices and techniques relating to landfill gas extraction |
| CN111927429B (en) * | 2020-07-29 | 2022-02-11 | 北京理工大学 | A detection and early warning device and method for storing carbon dioxide in the exploitation layer of an oil and gas field |
| AU2021390516A1 (en) | 2020-12-03 | 2023-06-15 | Loci Controls, Inc. | Greenhouse gas emissions control |
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- 2007-06-06 RU RU2008150243/03A patent/RU2449116C2/en not_active IP Right Cessation
- 2007-06-06 DK DK07733076.9T patent/DK2027363T3/en active
- 2007-06-06 CA CA2654052A patent/CA2654052C/en not_active Expired - Fee Related
- 2007-06-06 PL PL07733076T patent/PL2027363T3/en unknown
- 2007-06-06 AU AU2007255175A patent/AU2007255175B2/en not_active Ceased
- 2007-06-06 DE DE602007009380T patent/DE602007009380D1/en active Active
- 2007-06-06 BR BRPI0711663-2A patent/BRPI0711663A2/en not_active Application Discontinuation
- 2007-06-06 WO PCT/GB2007/002061 patent/WO2007141512A1/en active Application Filing
- 2007-06-06 JP JP2009513755A patent/JP5097202B2/en not_active Expired - Fee Related
- 2007-06-06 CN CN2007800214352A patent/CN101466916B/en not_active Expired - Fee Related
- 2007-06-06 MX MX2008015755A patent/MX2008015755A/en active IP Right Grant
- 2007-06-06 AT AT07733076T patent/ATE482325T1/en not_active IP Right Cessation
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- 2007-06-06 US US12/304,149 patent/US8186211B2/en not_active Expired - Fee Related
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2009
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Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0711663A2 (en) | 2012-03-13 |
| JP5097202B2 (en) | 2012-12-12 |
| MX2008015755A (en) | 2009-03-02 |
| CA2654052A1 (en) | 2007-12-13 |
| RU2449116C2 (en) | 2012-04-27 |
| DE602007009380D1 (en) | 2010-11-04 |
| CN101466916A (en) | 2009-06-24 |
| US8186211B2 (en) | 2012-05-29 |
| ES2353559T3 (en) | 2011-03-03 |
| GB0611527D0 (en) | 2006-07-19 |
| ATE482325T1 (en) | 2010-10-15 |
| WO2007141512A1 (en) | 2007-12-13 |
| PL2027363T3 (en) | 2011-04-29 |
| ZA200900183B (en) | 2009-12-30 |
| US20090266154A1 (en) | 2009-10-29 |
| AU2007255175A1 (en) | 2007-12-13 |
| JP2009540286A (en) | 2009-11-19 |
| EP2027363A1 (en) | 2009-02-25 |
| RU2008150243A (en) | 2010-07-20 |
| EP2027363B1 (en) | 2010-09-22 |
| DK2027363T3 (en) | 2011-01-03 |
| CA2654052C (en) | 2014-07-08 |
| CN101466916B (en) | 2013-09-11 |
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