US2008110613A1PendingUtilityA1

Wireline grease head

30
Individually held — no corporate assignee on recordPriority: Nov 15, 2006Filed: Nov 15, 2006Published: May 15, 2008
Est. expiryNov 15, 2026(~0.3 yrs left)· nominal 20-yr term from priority
Inventors:Darwin HolteJoseph D. Greene
E21B 33/072
30
PatentIndex Score
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Cited by
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References
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Claims

Abstract

Grease control head utilizing at least one ceramic insert for sealing around wireline, slick-line or braided wire while performing service operations in a well.

Claims

exact text as granted — not AI-modified
1 . A grease head for sealing a service line lowered into or raised from a well comprising at least one flow tube having a cylindrical housing for inserts and one or more ceramic inserts aligned inside the housing. 
   
   
       2 . A grease head according to  claim 1  further comprising a lock-down threaded cap threaded into one end of the housing and engaging the end of the nearest ceramic insert. 
   
   
       3 . A grease head for a metallic service line comprising at least one grease coupling, at least one flow tube and at least one nonmetallic insert inside the flow tube. 
   
   
       4 . A grease head according to  claim 3  wherein the insert is ceramic.

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