US3556209A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retrievable wireline lubricator and method of use
Assignee: ExxonMobil Upstream Research Co
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Filing: 1969-04-30
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Granted: 1971-01-19
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Expires: 1989-04-30
Abstract
Abstract A lubricator for use in running well tools suspended from a wireline in wells where the wellhead and blowout preventers are submerged and connected to a floating vessel by a marine conductor pipe. The lubricator includes a stuffing box connected to a tubular member. The stuffing box is arranged on the wireline above the connection of the wireline and a well tool suspended therefrom to provide a pressure seal around the wireline and the tubular member surrounds the wireline. The stuffing box and tubular member are lowered on the wireline into a well until the tubular member is positioned adjacent to a blowout preventer. The blowout preventer is closed on the tubular member to prevent vertical movement of the lubricator and to effect a pressure seal around the tubular member. The well tool is then lowered into the well and wireline well work is carried out. Thereafter, the blowout preventer is opened and the lubricator is pulled to the floating vessel as the wireline and well tool attached thereto are retrieved.
Inventors
- 👤 Carl E Reistle
- 👤 Joseph A Burkhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:53
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B33/076
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
Apparatus for use in running equipment suspended from a wireline into a well comprising: a floating vessel; a submerged blowout preventer connected to the well a marine conductor pipe connected at one end to said blowout preventer and at the other end to said floating vessel; a tubular member, said tubular member surrounding said wireline; and a stuffing box affixed to said tubular member and arranged on said wireline above the connection of said wireline and said equipment suspended therefrom, said stuffing box effecting a pressure seal around said wireline and said blowout preventer surrounding said tubular member to effect a pressure seal around said tubular member and prevent vertical movement of said tubular member.
Claim 2
Dependent Claim
115 words
Apparatus for use in running equipment suspended from a wireline into a well comprising: a floating vessel; a submerged blowout preventer connected to the well a marine conductor pipe connected at one end to said blowout preventer and at the other end to said floating vessel; a tubular member, said tubular member surrounding said wireline; and a stuffing box affixed to said tubular member and arranged on said wireline above the connection of said wireline and said equipment suspended therefrom, said stuffing box effecting a pressure seal around said wireline and said blowout preventer surrounding said tubular member to effect a pressure seal around said tubular member and prevent vertical movement of said tubular member.
Claim 3
Independent Claim
128 words
A method for use in running equipment suspended on a wireline into a well where the wellhead and blowout preventer are submerged and connected to a floating vessel by a marine conductor pipe comprising the steps of: a arranging a lubricator on a said wireline, said lubricator including a tubular member surrounding said wireline and a stuffing box connected to said tubular member for effecting a pressure seal around said wireline; lowering said wireline and lubricator through said marine conductor pipe until said tubular member is positioned adjacent to said submerged blowout preventer; closing said blowout preventer on said tubular member to effect a pressure seal around said tubular member and prevent vertical movement of said lubricator; and then lowering said equipment into said well on said wireline.
Claim 4
Independent Claim
128 words
A method for use in running equipment suspended on a wireline into a well where the wellhead and blowout preventer are submerged and connected to a floating vessel by a marine conductor pipe comprising the steps of: a arranging a lubricator on a said wireline, said lubricator including a tubular member surrounding said wireline and a stuffing box connected to said tubular member for effecting a pressure seal around said wireline; lowering said wireline and lubricator through said marine conductor pipe until said tubular member is positioned adjacent to said submerged blowout preventer; closing said blowout preventer on said tubular member to effect a pressure seal around said tubular member and prevent vertical movement of said lubricator; and then lowering said equipment into said well on said wireline.
Claim 5
Dependent Claim
52 words
A method as recited in claim 2 in which said blowout preventer comprises upper and lower pipe rams, said upper pipe rams being open and said lower pipe rams being closed and wherein said lowering steps includes lowering said equipment through said lower rams until said tubular member engages said lower rams.
Claim 6
Dependent Claim
29 words
A method as recited in claim 3 including closing said upper rams on said tubular member and opening said lower rams prior to lowering said equipment in said well.
Claim 7
Dependent Claim
41 words
A method as recited in claim 4 further including pulling said wireline up until the upper end of said equipment engages said stuffing box; then opening said upper rams and pulling said wireline to said vessel through said marine conductor pipe.
Claim 8
Dependent Claim
54 words
A method as recited in claim 5 including installing a choke-kill line extending from said vessel to said well below said blowout preventer, said line being provided with a remotely operable valve and a pressure gauge; and then opening said valve after said upper rams are closed to monitor pressure on said tubular member.
References Cited (Backward Citations)
US3500907A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |