US3845837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravity force operated apparatuses for generation of longitudinal pulse data from the bottom of a well
Assignee: Texaco Inc
•
Filing: 1972-10-30
•
Granted: 1974-11-05
•
Expires: 1992-10-30
Abstract
Abstract Two mechanisms are disclosed, one comprising a special drill collar including a controllably and telescopically slideable lower section in a drill string in a wellbore, the lower section being dropped against a stop in the special drill collar during a lull in drilling for generation of a longitudinal pulse or acoustical signal in the drilling assembly representative of data to be transmitted from the well bottom for being monitored at the surface, and the other mechanism comprising a drill string with a plurality of slideable special drill collar telescopic sections, each section being controllably dropped for generating longitudinal pulses or acoustical signals in the drilling assembly representative of well bottom data for being monitored at the surface.
Inventors
- 👤 W Mcevers
- 👤 P Cox
- 👤 A Richter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:37
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/16
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
77 words
A system for transmission of data from the lower end of a drilling assembly in a wellbore to the surface comprising, a. a drlling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. gravity force means for generating acoustical signal pulses in the lower end of the drill string, and d. means for monitoring the gravity force generated acoustical signal pulses in the drill string at the surface.
Claim 2
Independent Claim
77 words
A system for transmission of data from the lower end of a drilling assembly in a wellbore to the surface comprising, a. a drlling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. gravity force means for generating acoustical signal pulses in the lower end of the drill string, and d. means for monitoring the gravity force generated acoustical signal pulses in the drill string at the surface.
Claim 3
Independent Claim
104 words
A system for transmission of data from the lower end of a drill string in a wellbore to the top of the wellbore at the surface comprising, a. a drilling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. controllable gravity longitudinal pulse acoustical signal generating means on the lower end of said drill string for generating longitudinal pulse acoustical signals in said drill string, and d. acoustical signal monitoring means on the upper end of said drill string for monitoring said controlled gravity longitudinal pulse acoustical signals in said drill string at the surface.
Claim 4
Independent Claim
104 words
A system for transmission of data from the lower end of a drill string in a wellbore to the top of the wellbore at the surface comprising, a. a drilling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. controllable gravity longitudinal pulse acoustical signal generating means on the lower end of said drill string for generating longitudinal pulse acoustical signals in said drill string, and d. acoustical signal monitoring means on the upper end of said drill string for monitoring said controlled gravity longitudinal pulse acoustical signals in said drill string at the surface.
Claim 5
Dependent Claim
113 words
A system as recited in claim 2 wherein the controllable gravity longitudinal pulse acoustical signal generating means comprises, a. special drill collar means on said lower end of said drill string comprising two sections for generating longitudinal pulse acoustical signals, b. controllable coupling means between said two sections of said special drill collar means, c. control means for said controllable coupling means, and d. said coupling means being responsive to said control means for uncoupling one of said sections of said special drill collar means from said other section for dropping a predetermined distance for generating said controllable gravity longitudinal pulse acoustical signal in the drill string for being monitored at the surface.
Claim 6
Dependent Claim
48 words
A system as recited in claim 2 wherein, a. means for time modulating said acoustical signals, and b. said acoustical signal monitoring means is responsive to said controlled gravity longitudinal pulse acoustical signal generating means for monitoring the time modulation between said longitudinal pulses in said drill string.
Claim 7
Dependent Claim
74 words
A system as recited in claim 2 wherein said controllable gravity longitudinal pulse acoustical signal generating means comprises, a. drill collar means on the lower end of said drill string, b. said drill collar means having a first section slideable therein, and c. said first section being slideable in said drill collar means to a stop therein for generating a longitudinal pulse acoustical signal in the drill string for being monitored at the surface.
Claim 8
Dependent Claim
64 words
A system as recited in claim 5 wherein, a. said drill collar means of the controllable gravity longitudinal pulse acoustical signal generating means comprises also a second section, b. said drill collar second section being slideable in said drill collar first section to a stop therein for generating a second longitudinal pulse acoustical signal in said drill string for being monitored at the surface.
Claim 9
Dependent Claim
77 words
A system as recited in claim 5 wherein, a. said drill collar means comprises a plurality of slideably interconnected sections, each section having stop means for limiting each to a fully extended position, and b. said drill collar means being responsive to a gravity control means for being extended, one section at a time, to each stop means for generating a plurality of longitudinal pulse acoustical signals in the drill string for being monitored at the surface.
Claim 10
Independent Claim
219 words
A system for transmission of data from the lower end of a drill string in a wellbore to an acoustical signal monitor in the top of the drill string comprising, a. a drilling assembly having a drill string, b. an acoustical signal monitor connected to the top of said drill string, c. a drill collar in the lower end of the drill string comprising a first drill collar section, d. said first drill collar section being telescopically connected to said drill collar for relative movement therewith between a telescopically contracted position wherein said first drill collar section is in a raised position, and a telescopically extended position wherein said first drill collar section is in a lowered position, e. locking means for locking said first drill collar section in one of said two positions, f. data measuring means on the lower end of said drill string, and g. gravity control means responsive to said data measuring means for unlocking said locking means for permitting gravity forces to move said drill collar and said first drill collar section relative to each other from one position to the other position for generating a first longitudinal pulse acoustical signal at the lower end of the drill string for being received by the acoustical signal monitor at the top of the drill string.
Claim 11
Independent Claim
219 words
A system for transmission of data from the lower end of a drill string in a wellbore to an acoustical signal monitor in the top of the drill string comprising, a. a drilling assembly having a drill string, b. an acoustical signal monitor connected to the top of said drill string, c. a drill collar in the lower end of the drill string comprising a first drill collar section, d. said first drill collar section being telescopically connected to said drill collar for relative movement therewith between a telescopically contracted position wherein said first drill collar section is in a raised position, and a telescopically extended position wherein said first drill collar section is in a lowered position, e. locking means for locking said first drill collar section in one of said two positions, f. data measuring means on the lower end of said drill string, and g. gravity control means responsive to said data measuring means for unlocking said locking means for permitting gravity forces to move said drill collar and said first drill collar section relative to each other from one position to the other position for generating a first longitudinal pulse acoustical signal at the lower end of the drill string for being received by the acoustical signal monitor at the top of the drill string.
Claim 12
Dependent Claim
138 words
A system as recited in claim 8 wherein, a. a second drill collar section is telescopically connected to said first drill collar section for relative movement between a telescopically contracted position wherein said second drill collar section is in a raised position and a telescopically extended position wherein said second drill collar section is in a lowered position, b. second locking means for locking said second drill collar section in one of said two positions, and c. said control means having means for unlocking said second locking means for permitting gravity forces to move said first drill collar section and said second drill collar section relative to each other from one position to the other position for generating a second longitudinal pulse at the lower end of the drill string in consecutive relationship with the first longitudinal pulse.
Claim 13
Dependent Claim
69 words
A system as recited in claim 8 wherein, a. said drill collar comprises a plurality of drill collar sections, b. said locking means comprises means for locking each adjacent pair of drill collar sections together, and c. said locking means is responsive to said gravity control means for unlocking said drill collar sections in succession starting with the bottom section first and progressing to the top drill collar section.
Claim 14
Dependent Claim
67 words
A system as recited in claim 8 wherein, a. said drill collar comprises a plurality of drill collar sections, b. said locking means comprises means for locking each adjacent pair of drill collar sections together, and c. said locking means is responsive to said gravity control means for unlocking said drill collar sections in succession starting with the top section first and progressing to the bottom section.
Claim 15
Dependent Claim
96 words
A system as recited in claim 8 wherein further, a. said drill collar comprises a plurality of drill collar sections, b. said locking means comprises means for locking each adjacent pair of drill collar sections together, c. stop means for limiting movement of each drill collar section between a fully contracted position and a fully extended position, and d. said stop means being responsive to said gravity control means for unlocking said drill collar sections in succession for generating a plurality of longitudinal pulse acoustical signals in said drill string for being monitored at the surface.
Claim 16
Dependent Claim
129 words
A data transmission system for generating longitudinal energy pulses in the bottom of a drill string in a wellbore for being monitored at the surface comprising, a. a drilling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. means fOr connecting a drill bit section to a drill pipe section in said drill string for relative longitudinal movement therebetween a fully contracted position and a fully extended position, d. said sections being movable relative to each other between said two positions due to the forces of gravity, and e. said sections being responsive to said connecting means and gravity forces for generating a gravity force induced energy pulse acoustical signal in the drill string for being monitored at the surface.
Claim 17
Dependent Claim
129 words
A data transmission system for generating longitudinal energy pulses in the bottom of a drill string in a wellbore for being monitored at the surface comprising, a. a drilling assembly having a drill string, b. data measuring means on the lower end of said drill string, c. means fOr connecting a drill bit section to a drill pipe section in said drill string for relative longitudinal movement therebetween a fully contracted position and a fully extended position, d. said sections being movable relative to each other between said two positions due to the forces of gravity, and e. said sections being responsive to said connecting means and gravity forces for generating a gravity force induced energy pulse acoustical signal in the drill string for being monitored at the surface.
Claim 18
Dependent Claim
41 words
A data transmission system as recited in claim 13 wherein, a. said relatively movable sections are responsive to said connecting means and gravity forces for being moved relatively to each other from said fully contracted position to said fully extended position.
Claim 19
Dependent Claim
41 words
A data transmission system as recited in claim 13 wherein, a. said relatively movable sections are responsive to said connecting means and gravity forces for being moved relatively to each other from said fully extended position to said fully contracted position.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |