US4862426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for operating equipment in a remote location
Assignee: Cameron International Corp
•
Filing: 1987-12-08
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Granted: 1989-08-29
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Expires: 2007-12-08
Abstract
Abstract An improved method and apparatus for operating or setting equipment within a subsea marine wellhead from the surface having an indicating signal provided at the surface of the successful completion of such operation. The steps of the method include the lowering of a well component and the detecting and transmitting equipment on a running string from the surface; detecting the successful completion of the subsea operation, and transmitting to the surface of a signal signifying that the operations within the subsea well head have been successfully completed. The apparatus includes the running string, the detecting means which may be an acoustic detector or a ferrous metal detector or other suitable detector, a signal transmitter, means for supporting the detector and transmitter on the running string so that the well component can be properly lowered and positioned within the subsea wellhead and its proper landing, sealing or latching or other desired condition signalled to the surface to provide an indication that the operation has been completed.
Inventors
- 👤 Thomas G. Cassity
- 👤 William C. Montgomery
- 👤 Gerald S. Baker
- 👤 Alfred W. Wedel
- 👤 William M. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:23
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/043; E21B33/035; E21B33/0355; E21B47/00; E21B47/09; E21B47/12; E21B47/14; E21B47/18
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
79 words
The method of conducting operations within a subsea wellhead of a subsea marine well from the water surface including the steps of lowering a well component into the subsea wellhead on a running string, lowering detecting equipment and transmission equipment into the subsea wellhead on the running string, detecting the occurrence of a condition with respect to said well component within the subsea wellhead, and transmitting a signal responsive to the detection of the condition to the water surface.
Claim 2
Independent Claim
79 words
The method of conducting operations within a subsea wellhead of a subsea marine well from the water surface including the steps of lowering a well component into the subsea wellhead on a running string, lowering detecting equipment and transmission equipment into the subsea wellhead on the running string, detecting the occurrence of a condition with respect to said well component within the subsea wellhead, and transmitting a signal responsive to the detection of the condition to the water surface.
Claim 3
Dependent Claim
35 words
The method according to claim 1 including the step of displaying at the water surface an indication of the occurrence of the condition of the well component responsive to the receive of the transmitted signal.
Claim 4
Dependent Claim
21 words
The method according to claim 1 wherein the condition of the well component within the subsea wellhead can be detected acoustically.
Claim 5
Dependent Claim
26 words
The method according to claim 1 wherein said detection step detects the acoustic wave generated by the condition of the well component within the subsea wellhead.
Claim 6
Dependent Claim
27 words
The method according to claim 1 including the step of generating an acoustic wave responsive to the detected condition of the well component within the subsea wellhead.
Claim 7
Dependent Claim
24 words
The method according to claim 1 wherein said detecting step includes the step of detecting strain in the well component within the subsea well.
Claim 8
Independent Claim
95 words
The method of controlling subsea marine wellhead operations from the water surface including the steps of manipulating a string at the water surface to lower a detecting means, a transmitter and a well component into a desired position within the subsea wellhead, detecting the achievement of the desired position by the well component within the subsea wellhead, transmitting to the water surface a signal responsive to the detection of the achievement of the desired position by the well component, and indicating at the water surface the position of the well component within the subsea wellhead.
Claim 9
Independent Claim
95 words
The method of controlling subsea marine wellhead operations from the water surface including the steps of manipulating a string at the water surface to lower a detecting means, a transmitter and a well component into a desired position within the subsea wellhead, detecting the achievement of the desired position by the well component within the subsea wellhead, transmitting to the water surface a signal responsive to the detection of the achievement of the desired position by the well component, and indicating at the water surface the position of the well component within the subsea wellhead.
Claim 10
Dependent Claim
30 words
The method according to claim 7 wherein said well component is hanger and said desired position is the landing of the hanger on a landing shoulder within the subsea wellhead.
Claim 11
Dependent Claim
28 words
The method according to claim 7 wherein said well component is a hanger having an annulus seal and said desired position is the setting of the annulus seal.
Claim 12
Dependent Claim
33 words
The method according to claim 1 wherein said well component includes a ratcheting latch mechanism and said desired position is the ratcheting and setting of the ratcheting latch mechanism within the subsea wellhead.
Claim 13
Dependent Claim
42 words
The method according to claim 7 wherein said well component is a tubular member and said desired position is the completion of the cold forging of the tubular member into tight gripping and sealing engagement within another member within said subsea wellhead.
Claim 14
Dependent Claim
24 words
The method according to claim 8 wherein said detecting step includes detecting the noise of the landing of the hanger on the landing shoulder.
Claim 15
Dependent Claim
21 words
The method according to claim 7 wherein said detecting step includes detecting the position with a ferrous metal proximity switch detector.
Claim 16
Dependent Claim
39 words
The method according to claim 13 wherein said ferrous metal proximity switch detector creates a preselected acoustic output pattern when the landing is complete and the detecting step includes detecting the preselected acoustic output pattern of said proximity switch.
Claim 17
Dependent Claim
24 words
The method according to claim 7 wherein said detecting step includes generating an acoustic output for detection upon the occurrence of said desired position.
Claim 18
Dependent Claim
17 words
The method according to claim 7 wherein said transmitting step includes transmitting through the water by sonar.
Claim 19
Dependent Claim
19 words
The method according to claim 7 wherein said transmitting step includes transmitting the signal through the subsea wellhead equipment.
Claim 20
Dependent Claim
29 words
The method according to claim 7 wherein said transmitting step includes transmitting the signal through the string extending from the water surface to the interior of the wellhead equipment.
Claim 21
Dependent Claim
17 words
The method according to claim 7 wherein said transmitting step includes transmitting the signal through a wire.
Claim 22
Independent Claim
125 words
An apparatus for manipulating equipment including a well component in a subsea wellhead of a subsea marine well comprising detecting means for detecting the occurrence of a condition with respect to said well component within the subsea wellhead, transmitting means for transmitting a signal to the water surface, means for supporting the detecting means and the transmitting means on the running string with the well component, a running string for lowering the well component, said detecting means and said transmitting means into the subsea marine well, said detecting means upon the detection of the occurrence of a condition with respect to said well component within the subsea wellhead causing said transmitting means to transmit a signal to the water surface that the condition has occurred.
Claim 23
Independent Claim
125 words
An apparatus for manipulating equipment including a well component in a subsea wellhead of a subsea marine well comprising detecting means for detecting the occurrence of a condition with respect to said well component within the subsea wellhead, transmitting means for transmitting a signal to the water surface, means for supporting the detecting means and the transmitting means on the running string with the well component, a running string for lowering the well component, said detecting means and said transmitting means into the subsea marine well, said detecting means upon the detection of the occurrence of a condition with respect to said well component within the subsea wellhead causing said transmitting means to transmit a signal to the water surface that the condition has occurred.
Claim 24
Dependent Claim
36 words
An apparatus according to claim 20 including means at the water surface for receiving the transmitted signal, and means at the water surface for displaying the occurrence of the condition with respect to the well component.
Claim 25
Dependent Claim
14 words
An apparatus according to claim 20 wherein said detecting means is an acoustic sensor.
Claim 26
Dependent Claim
23 words
An apparatus according to claim 20 including means for generating an acoustic signal responsive to the detection of the occurrence of the condition.
Claim 27
Dependent Claim
36 words
An apparatus according to claim 20 wherein said detection means detects the level of strain in the well component within the subsea wellhead to determine the occurrence of the condition with respect to the well component.
Claim 28
Dependent Claim
85 words
An apparatus according to claim 20 wherein said running string includes a sub, the wellhead includes a housing having internal lands and grooves, said condition is the well component reaching a desired position within said subsea wellhead, and said detecting means includes a plurality of proximity detectors mounted at different levels in said sub on the running string with the detectors coacting with lands and grooves on the interior of the wellhead housing to determine the reaching of such desired position by said well component.
Claim 29
Dependent Claim
32 words
An apparatus according to claim 20 wherein said transmitting means is a sonar transmitter facing upwardly toward the water surface and positioned within the water to one side of the subsea wellhead.
Claim 30
Dependent Claim
14 words
An apparatus according to claim 20 wherein said transmitting means is an acoustic generator.
Claim 31
Dependent Claim
16 words
An apparatus according to claim 20 including wiring connecting said transmitting means to the water surface.
Claim 32
Dependent Claim
34 words
An apparatus according to claim 21 wherein said display means includes a data processor for processing the data received from the subsea wellhead, and an indicator to display the results of the processed data.
References Cited (Backward Citations)
US3513911A
Cited
US3900827A
Cited
US3825078A
Cited
US3820389A
Cited
US3813656A
Cited
US3821696A
Cited
US3982224A
Cited
US4001775A
Cited
US3958217A
Cited
US3949354A
Cited
US4087781A
Cited
US4066995A
Cited
US4126848A
Cited
US4121193A
Cited
US4134100A
Cited
US4206810A
Cited
US4337829A
Cited
US4300637A
Cited
US4527425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |