US Patent No: 7,210,532

Number of patents in Portfolio can not be more than 2000

Method and apparatus for lifting liquids from gas wells

ALSO PUBLISHED AS: 20050155769

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Importance

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Abstract

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A downhole apparatus and method for maintaining or reducing the level of liquids at the bottom of a gas producing well is described including a constriction or throat section, such as a Venturi, in which a production gas flow from the well is used to generate a low pressure zone having a pressure less that the ambient formation gas pressure and at least one conduit providing a flow path from an up-stream location within said well to said low pressure zone. The conduit may have additional opening for production gas to enter the conduit.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SCHLUMBERGER TECHNOLOGY CORPORATIONSUGAR LAND, TX5610

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Atkinson, Ian Ely, GB 34 243
Nicholson, Barry Carindale, AU 6 48
Sherwood, John Bozeman, MT 11 26

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CONOCOPHILLIPS COMPANY (1)
5,636,693 Gas well tubing flow rate control 25 1994
 
Kenonic Controls Ltd. (1)
5,957,199 Natural gas production optimization switching valve system 7 1997
 
TECHNOLOGY COMMERCIALIZATION CORP. (1)
5,904,209 Method and device for removal of production inhibiting liquid from a gas well 4 1998
 
Other [Check patent profile for assignment information] (3)
6,059,040 Method and apparatus for withdrawal of liquid phase from wellbores 10 1997
5,937,946 Apparatus and method for enhancing fluid and gas flow in a well 19 1998
2002/0029,888 Ground water extraction method and system 6 2001

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SCHLUMBERGER TECHNOLOGY CORPORATION (2)
7,428,929 Method and apparatus for lifting liquids from gas wells 1 2007
7,849,925 System for completing water injector wells 4 2008
 
BAKER HUGHES INCORPORATED (1)
7,984,766 System, method and apparatus for gas extraction device for down hole oilfield applications 3 2008

Maintenance Fees

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7.5 Year Payment $3600.00 $1800.00 $900.00 Nov 1, 2014
11.5 Year Payment $7400.00 $3700.00 $1850.00 Nov 1, 2018
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Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00