21 |
Method and apparatus for buoyancy control of submergible chambers |
US661148 |
1976-02-25 |
US4029034A |
1977-06-14 |
Burton Hoster Mason |
An apparatus having a bouyancy control tank mounted in conjunction with a submergible chamber, and being provided with a source of gas under pressure to the tank and wherein several vertically disposed pipes are arranged and constructed within the tank so that each pipe may be selectively opened from within the manned chamber for fluid communication from the tank to the ambient water below the tank. Pressurized gas to the tank forces water therein through a selected open pipe to the ambient water, so that a gas-water interface in said tank is attained at about the top free end of the opened pipe. To discharge gas under pressure from the tank, valves are mounted on the tank and which may be actuated from within the manned chamber or remotely, and with the discharge of the gas, water from outside the tank passes through the selected open pipe into the tank. The chamber is designed to provide a life-supporting environment so that bouyancy control operations may be conducted from within the chamber. This bouyancy control apparatus is particularly useful in limited diameter chambers and diving bells to attain positive bouyancy from any altitude for emergency ascent. |
22 |
Method for connecting a submerged well head to a pipe consisting of
steel tubes |
US565908 |
1975-04-07 |
US4004635A |
1977-01-25 |
Roger Andre Marie Marquaire; Michel Georges August Curtis; Robert Edouard Schappel |
In the connection of a relatively inflexible pipe to a submerged well head at a depth which may be greater than that to which divers can descend, a pipe placing structure is first locked onto the well head and the pipe is then lowered and automatically connected to the placing structure, a bell housing a sub-assembly including the master valve is next lowered onto the well head and locked thereon by a bearing structure to which the bell is attached. A crew is transferred to the bell to connect the sub-assembly to the well head and to a connector which is automatically connected to the pipe. |
23 |
Method of connection of an undersea well to a flexible outflow pipe |
US565969 |
1975-04-07 |
US3983937A |
1976-10-05 |
Roger Marie Andre Marquaire; Michel Georges August Curtis; Robert Edouard Schappel |
In the connection of a flexible outflow pipe to a submerged well head situated at a depth greater than that which can be reached by a diver, the pipe is connected to a bearing structure for bearing on and connection to the well head and on which a diving bell bears, the bell being made fast to the bearing structure and housing a sub-assembly for connection to the well head, the assembly of bell, bearing structure and attached pipe is lowered onto the well head and automatically connected thereto, thereafter a crew is lowered in a crew carnes to the bell and the crew effects connection of the sub-assembly to the well head and the pipe connector to the sub-assembly while in the bell. |
24 |
Apparatus for guiding a load between a surface apparatus and a submerged
base platform |
US502311 |
1974-09-03 |
US3943725A |
1976-03-16 |
Michael Derek Pennock |
Apparatus for guiding a load between a surface apparatus and a submerged base platform comprises at least two return pulleys mounted on the base platform, at least two cables passing over the pulleys, one run of each cable being connected to the surface apparatus by a winch and the other run acting as a guide for a load carrier, each run passing from the respective pulley to the respective winch separating from the respective guide run as it extends away from the respective pulley and the runs connected to the load carrier being orientated by the latter in the direction of the surface apparatus, and means for horizontally levelling the load carrier. |
25 |
Apparatus and method for offshore operations |
US36181073 |
1973-05-18 |
US3851492A |
1974-12-03 |
CANNON G; KRUGER J; SHORT T; JOBE B |
A new and improved system, apparatus and method for performing operations on the floor of the sea or other underwater locations utilizes a combination of tension devices for maintaining work bodies in desired positions while also permitting viewing of such underwater operations by remote control television camera or other operations.
|
26 |
Subsea production satellite |
US3513910D |
1967-09-25 |
US3513910A |
1970-05-26 |
TOWNSEND ROBERT D JR |
|
27 |
Cable working arrangement on submarine well-heads |
US3511312D |
1968-04-23 |
US3511312A |
1970-05-12 |
LAFFONT MAURICE; DUVET CLAUDE |
|
28 |
Sealing system for underwater installation |
US3485056D |
1968-09-19 |
US3485056A |
1969-12-23 |
HELMUS SYDNEY S |
|
29 |
Diving method and apparatus |
US57065866 |
1966-08-05 |
US3408822A |
1968-11-05 |
CHATE FREDERICK J; KAPTEYN STEVEN A T |
|
30 |
Offshore oil well installation |
US56933256 |
1956-03-05 |
US2854215A |
1958-09-30 |
COX JR WILLIAM R; HOWE RICHARD J |
|
31 |
JPH0459437B2 - |
JP1259583 |
1983-01-28 |
JPH0459437B2 |
1992-09-22 |
EMETSUTO MAASHU RICHAADOSON; ANJEROSU TOOMASU KATASU; JOSEFU RARUFU PADEIRA |
|
32 |
Sea bottom pit completing system, foundation template for said system and obtaining production capacity from plural sea bottom well heads |
JP1259583 |
1983-01-28 |
JPS58135296A |
1983-08-11 |
EMETSUTO MAASHIYU RICHIYAADOSO; ANJIEROSU TOOMASU KATASU; JIYOSEFU RARUFU PADEIRA |
|
33 |
JPS5648756B2 - |
JP10010773 |
1973-09-05 |
JPS5648756B2 |
1981-11-17 |
|
|
34 |
Device for manufacturing water seal |
JP6283578 |
1978-05-25 |
JPS5433939A |
1979-03-13 |
ROORANSU POTSUTAA; ARAN JIYASUTEIN RASOTSUDO |
|
35 |
Construction for service works |
JP8042878 |
1978-07-01 |
JPS5418101A |
1979-02-09 |
SAMUERU TEYUTSUSON |
|
36 |
Method of connecting underwater pipeline to riser of offshore platform |
JP2494676 |
1976-03-08 |
JPS51113217A |
1976-10-06 |
JIYAN DEYONGU |
|
37 |
Chuosuteeshonoyuiguntoryushutsupaipugunnirenketsusuruhooyobisochi |
JP4175175 |
1975-04-05 |
JPS514005A |
1976-01-13 |
ROJAA MAKUWAIYAA; MITSUCHERU KAACHISU; ROBAATO EDOWAADO SUCHATSUPURU |
|
38 |
Fukaisuichunisetsuchisareta yuinihikatoseinoryushutsupaipuorenketsusuru hoho oyobi sochi |
JP4175075 |
1975-04-05 |
JPS514004A |
1976-01-13 |
ROJAA MAKUWAIYAA; MITSUCHERU KAACHISU; ROBAATO EDOWAADO SUCHATSUPURU |
|
39 |
Fukaisuichunisetsuchisareta yuinikatoseinoryushutsupaipuorenketsusuruhoho |
JP4174975 |
1975-04-05 |
JPS514003A |
1976-01-13 |
ROJAA MAKUWAIYAA; ROBAATO EDOWAADO SUCHATSUPURU; MITSUCHERU KAACHISU |
|
40 |
Petroleum well intervention winch system |
US14235410 |
2012-09-10 |
US09470054B2 |
2016-10-18 |
Morten Talgø; John Helvik |
A petroleum well intervention winch system includes a high pressure confining housing for a drum for a rope to a tool string. The pressure confining housing has a connector with an aperture for the rope to a top of a tool string gate chamber on vertical bore BOP valves on a wellhead on the petroleum well. The rope runs through the aperture via a capstan to the drum. The capstan is driven by a first motor through a first high pressure proof magnetic coupling across a wall of the housing. The drum is driven by a second motor through a second high pressure proof magnetic coupling across the wall of the housing. The capstan is subject to a load tension from the rope and is provided with a hold tension on the rope from the drum. The second motor exerts a constant hold tension on the rope via the drum. |