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
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May 1, 2007
Issued date -
May 20, 2004
filing date -
10/849,745
serial no -
In Force
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Abstract
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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First Claim
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,636,693 Gas well tubing flow rate control | 25 | 1994 | |
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| 5,957,199 Natural gas production optimization switching valve system | 7 | 1997 | |
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| 5,904,209 Method and device for removal of production inhibiting liquid from a gas well | 4 | 1998 | |
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| 6,059,040 Method and apparatus for withdrawal of liquid phase from wellbores | 6 | 1997 | |
| 5,937,946 Apparatus and method for enhancing fluid and gas flow in a well | 18 | 1998 | |
| 2002/0029,888 Ground water extraction method and system | 6 | 2001 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 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 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| 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 |