US3924679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure operated apparatus for running and setting packing assemblies in wellheads
Assignee: Vetco Inc
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Filing: 1974-08-07
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Granted: 1975-12-09
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Expires: 1994-08-07
Abstract
Abstract Running apparatus is releasably connected to a packing assembly, the combination being lowered on a tubular running string until the packing assembly is disposed between a hanger body and a surrounding wellhead underlying a body of water. The apparatus is operated by pressure fluid supplied through the running string and reaction is taken on the closed blowout preventer rams to effect setting of the packing in the annular space between the hanger body and wellhead. The apparatus is rotated relative to the packing to lock the packing in place, the apparatus then being released from the packing assembly for retrieval to the drilling rig at the water surface.
Inventors
- 👤 Jr Martin B Jansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:04
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
136 words
Apparatus for effecting a seal between a wellhead housing below a blowout preventer means and a hanger disposed in said housing for supporting a tubular string extending into a well bore comprising: a running tool having a body structure connectable to a running pipe string, packing means, means releasably connecting said packing means to said body structure, actuator means disposed between and engageable with the blowout preventer means and packing means for setting said packing means between said housing and said hanger, and locking means for holding said packing means in set condition, said actuator means including fluid pressure operated piston and cylinder means for applying a setting force to said packing means and a reactive force to the blowout preventer means with said actuator means in engagement with the blowout preventer means and packing means.
Claim 2
Dependent Claim
136 words
Apparatus for effecting a seal between a wellhead housing below a blowout preventer means and a hanger disposed in said housing for supporting a tubular string extending into a well bore comprising: a running tool having a body structure connectable to a running pipe string, packing means, means releasably connecting said packing means to said body structure, actuator means disposed between and engageable with the blowout preventer means and packing means for setting said packing means between said housing and said hanger, and locking means for holding said packing means in set condition, said actuator means including fluid pressure operated piston and cylinder means for applying a setting force to said packing means and a reactive force to the blowout preventer means with said actuator means in engagement with the blowout preventer means and packing means.
Claim 3
Dependent Claim
60 words
Apparatus as defined in claim 1, said piston and cylinder means defining a piston chamber, said body structure having a chamber containing acTuator fluid and having passage means communicating between said piston chamber and said body chamber, and separator piston means in said body chamber for pressurizing said actuator fluid in response to pressure supplied through said running pipe string.
Claim 4
Dependent Claim
43 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means.
Claim 5
Dependent Claim
66 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, and said means releasably connecting said packing means to said body structure including means releasably connecting said locking member to said body structure.
Claim 6
Dependent Claim
61 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, said locking member having means cooperable with said hanger to hold said locking member in a locking position.
Claim 7
Dependent Claim
65 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, said locking member having a thread cooperable with a thread on said hanger to hold said locking member in a locking position.
Claim 8
Dependent Claim
77 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, and said means releasably connecting said packing means to said body structure including means releasably connecting said locking member to said body structure, and means releasably connecting said packing means to said locking member.
Claim 9
Dependent Claim
78 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, and said means releasably connecting said packing means to said body structure including means releasably connecting said locking member to said body structure, and shear pins releasably connecting said packing means to said locking member.
Claim 10
Dependent Claim
70 words
Apparatus as defined in claim 1, said piston and cylinder means being shiftably disposed on said body structure, said locking means including a locking member shiftable by said body structure upon movement of said body structure relative to said piston and cylinder means, and said means releasably connecting said packing means to said body structure including J slots and pin means engageable between said body structure and said locking member.
Claim 11
Dependent Claim
74 words
Apparatus as defined in claim 1, said piston and cylinder means defining a piston chamber, said body structure having a chamber containing actuator fluid and having passage means communicating between said piston chamber and said body chamber, and separator piston means in said body chamber for pressurizing said actuator fluid in response to pressure supplied through said running pipe string, said body structure having means cooperable with said hanger to form a seal therebetween.
Claim 12
Dependent Claim
19 words
Apparatus as defined in claim 1, wherein said body structure includes means for forming a seal with said hanger.
Claim 13
Dependent Claim
66 words
Apparatus as defined in claim 1, wherein said piston and cylinder means includes a cylinder sleeve longitudinally shiftably carried by said body structure and having a piston chamber, a piston shiftable with respect to said body structure and having a portion in said piston chamber, one of said cylinder sleeve and piston being engageable with said blowout preventer means and the other supporting said packing means.
Claim 14
Dependent Claim
92 words
Apparatus as defined in claim 1, wherein said piston and cylinder means includes a cylinder sleeve longitudinally slidable along said body structure and having a piston chamber, a piston shiftable with respect to said body structure and having a portion in said piston chamber, one of said cylinder sleeve and piston being engageable with said blowout preventer means and the other supporting said packing means, said body structure having a body chamber communicating with said piston chamber for transmitting the pressure of fluid from said running pipe string to said piston chamber.
Claim 15
Dependent Claim
114 words
Apparatus as defined in claim 1, wherein said piston and cylinder means includes a cylinder sleeve longitudinally slidable along said body structure and having a piston chamber, a piston shiftable with respect to said body structure and having a portion in said piston chamber, one of said cylinder sleeve and piston being engageable with said blowout preventer means and the other supporting said packing means, said body structure having a body chamber communicating with said piston chamber, pressure transmitting fluid in said body chamber and said piston chamber, and a piston shiftable in said body chamber by the pressure of fluid in said running pipe string to apply pressure to said pressure transmitting fluid.
Claim 16
Dependent Claim
63 words
Apparatus as defined in claim 1, wherein said piston and cylinder means includes a cylinder sleeve slidable on said body structure and having an upwardly facing shoulder engageable with a ram of said blowout preventer means upon upward sliding of said cylinder sleeve on said body structure, and a piston reciprocable with respect to said body structure and connected with said packing means.
Claim 17
Dependent Claim
80 words
Apparatus as defined in claim 1, wherein said piston and cylinder means includes a cylinder sleeve slidable on said body structure and having an upwardly facing shoulder engageable with a ram of said blowout preventer means upon upward sliding of said cylinder sleeve on said body structure, and a piston reciprocable with respect to said body structure and connected with said packing means, said cylinder sleeve having a tubular neck above said shoulder sealingly engageable by said blowout preventer ram.
Claim 18
Dependent Claim
118 words
In subsqueous well equipment: a blowout preventer having sealing ram means actuatable into sealing engagement with a tubular member disposed therein, a wellhead housing beneath said blowout preventer, a pipe string extending through said blowout preventer means into said housing, and tool means connected with said pipe string and disposed in said housing, said tool means including pressure operated piston and cylinder means for actuating a device carried by said tool means, said piston and cylinder means being slidable longitudinally on said pipe string and having means engageable with said blowout preventer means upon the application of fluid pressure to said piston and cylinder means and upward sliding of said piston and cylinder means on said pipe string.
Claim 19
Dependent Claim
118 words
In subsqueous well equipment: a blowout preventer having sealing ram means actuatable into sealing engagement with a tubular member disposed therein, a wellhead housing beneath said blowout preventer, a pipe string extending through said blowout preventer means into said housing, and tool means connected with said pipe string and disposed in said housing, said tool means including pressure operated piston and cylinder means for actuating a device carried by said tool means, said piston and cylinder means being slidable longitudinally on said pipe string and having means engageable with said blowout preventer means upon the application of fluid pressure to said piston and cylinder means and upward sliding of said piston and cylinder means on said pipe string.
Claim 20
Dependent Claim
53 words
In subaqueous well equipment as defined in claim 17, said piston and cylinder means including a cylinder sleeve, said tool having a body supporting said cylinder sleeve for movement thereon, said cylinder sleeve having an upwardly facing shoulder engageable with said blowout preventer ram means upon actuation of the latter to sealing position.
Claim 21
Dependent Claim
72 words
In subaqueous well equipment as defined in claim 17, said piston and cylinder means including a cylinder sleeve, said tool having a body supporting said cylinder sleeve for movement thereon, said cylinder sleeve having an upwardly facing shoulder engageable with said blowout preventer ram means upon actuation of the latter to sealing position, said cylinder sleeve having a tubular neck extending upwardly from said shoulder and sealingly engageable by said ram means.
Claim 22
Dependent Claim
39 words
In subaqueous well equipment as defined in claim 17, said piston and cylinder means defining a piston chamber, and including pressure transfer piston means for applying the pressure of fluid in said running pipe string to said piston chamber.
Claim 23
Dependent Claim
114 words
A running tool adapted to be lowered on a running pipe string through a blowout preventer mounted on a wellhead housing beneath a body of water said tool comprising: a body structure having means connectable with the running pipe string, pressure operated means slidable along said body structure and including relatively reciprocable piston and cylinder means for actuating a device in said wellhead housing, said body structure having means for transmitting the pressure of fluid in said running string to said piston and cylinder means to effect relative reciprocation thereof, one of said piston and cylinder means having a shoulder for reacting against the blowout preventer and the other being connectable with said device.
Claim 24
Dependent Claim
114 words
A running tool adapted to be lowered on a running pipe string through a blowout preventer mounted on a wellhead housing beneath a body of water said tool comprising: a body structure having means connectable with the running pipe string, pressure operated means slidable along said body structure and including relatively reciprocable piston and cylinder means for actuating a device in said wellhead housing, said body structure having means for transmitting the pressure of fluid in said running string to said piston and cylinder means to effect relative reciprocation thereof, one of said piston and cylinder means having a shoulder for reacting against the blowout preventer and the other being connectable with said device.
Claim 25
Dependent Claim
22 words
A running tool as defined in claim 21, means mounting said body structure rotatable with respect to said piston and cylinder means.
Claim 26
Dependent Claim
32 words
A running tool as defined in claim 21, means mounting said body structure rotatably with respect to said piston and cylinder means, said body structure having means releasably connectable with said device.
References Cited (Backward Citations)
US3827488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-08 | 1979-06-09 | 1979-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-08 | 1983-06-09 | 1983-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-08 | 1987-06-09 | 1987-12-09 | $7700.00 | Window Closed / Lapsed |