US Patent No: 6,598,685

Number of patents in Portfolio can not be more than 2000

Drilling fluid screen and method

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ALSO PUBLISHED AS: 20030150616
ATTORNEY / AGENT: (SPONSORED)
 

Importance

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Abstract

An apparatus for filtering a drilling fluid. The apparatus comprises a cylindrical flange member having a first and second passage and a cylindrical sleeve having an internal fishing neck. An attachment pin attaches the flange member to the cylindrical sleeve. The apparatus further comprises a screen member attached to the cylindrical sleeve. In one embodiment, the first and second passage are disposed off-centered so that four bore holes are created. The attachment pin cooperates with a groove formed on the sleeve's outer diameter surface. The apparatus may further include a pulling tool. The pulling tool contains a plurality of dog members disposed about a mandrel, and a spring that urges the dog members into engagement with a protuberance on the mandrel. The apparatus further comprises a shear pin attaching the dog members to the mandrel and wherein the shear pin is disposed within a slot so that the dog members can move axially relative to the mandrel. In one embodiment, the screen member is a cylindrical ribbed body. A method of cleaning a drilling fluid is also disclosed.

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First Claim

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Patent Owner(s)

  • Assignment data not available. Check USPTO

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mashburn, Benny Donald 103 Turn Row, Lafayette, LA 70508 16 25

Cited Art

Patent Info (Count) # Cites Year
 
HALLIBURTON ENERGY SERVICES, INC. (2)
5,762,137 Retrievable screen apparatus and methods of using same 6 1996
6,155,342 Proppant containment apparatus 11 1998
 
BAKER OIL TOOLS, INC. (1)
4,495,073 Retrievable screen device for drill pipe and the like 65 1983
 
HALLIBURTON COMPANY (1)
5,377,750 Sand screen completion 58 1993
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (1)
6,296,055 Combination retrievable drilling fluid filter and wiper 5 2000

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
SCHLUMBERGER TECHNOLOGY CORPORATION (2)
7,243,740 Filter assembly having a bypass passageway and method 3 2004
8,028,768 Displaceable plug in a tool string filter 0 2009
 
AGR SERVICES (1)
7,431,081 Device for removal and filtration of drilling fluid 3 2004
 
COMACCHIO S.R.L. (1)
7,523,793 Drilling head with protective screen 0 2005
 
INTELLISERV, LLC (1)
7,165,633 Drilling fluid filter 3 2004
 
SCHLUMBERGER WCP LIMITED (1)
6,715,570 Two stage downhole drilling fluid filter 3 2002
 
VARCO I/P, INC. (1)
6,976,546 Drilling mud filtration device 4 2003
 
OTHER [CHECK PATENT PROFILE FOR ASSIGNMENT INFORMATION] (3)
7,243,742 Drill pipe screen 3 2004
7,549,486 Screen apparatus and method 0 2007
7,980,330 Well tubular, retrievable joint strainer and method 0 2008

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
11.5 Year Payment $7400.00 $3700.00 $1850.00 Jan 29, 2015
Fee Large entity fee small entity fee micro entity fee
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