Patent US1780180A successfully refreshed from Google Patents.
Patent US4382486A successfully refreshed from Google Patents.
US4382486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tuned air gun array
Assignee: Mobil Oil AS
•
Filing: 1981-02-05
•
Granted: 1983-05-10
•
Expires: 2001-02-05
Abstract
Abstract The present invention provides a method for determining the spacing and size of air guns in a tuned air gun array. Volume ratios are calculated based upon a predetermined maximum volume for any individual air gun. The volumes are cross-referenced to spacings for optimum air gun interaction. The resulting air gun array operates as a broadband high-energy point source.
Inventors
- 👤 William H. Ruehle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:20
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/003; G01V1/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
74 words
A method of selecting volume ratios of air guns spaced apart in a seismic exploration array comprising the steps of: selecting the largest individual volume of the desired array; selecting the total number of air guns in the array; determining the volume ratio for individual guns according to the equation ##EQU14## where N=said number of volumes Vr=the volume ratio corresponding to the index n n=1, . . . N-1 Vro<8=largest volume ratio ##EQU15## P=parameter>0.76.
Claim 2
Independent Claim
74 words
A method of selecting volume ratios of air guns spaced apart in a seismic exploration array comprising the steps of: selecting the largest individual volume of the desired array; selecting the total number of air guns in the array; determining the volume ratio for individual guns according to the equation ##EQU14## where N=said number of volumes Vr=the volume ratio corresponding to the index n n=1, . . . N-1 Vro<8=largest volume ratio ##EQU15## P=parameter>0.76.
Claim 3
Dependent Claim
39 words
The method according to claim 1 also including the step of determining the distance between air guns according to the equation D=(P.sub.s V).sup.1/3 where D=distance between guns P s =pressure of the air gun V=volume of the air gun.
Claim 4
Dependent Claim
40 words
The method according to claim 1 wherein said step of selecting the largest individual volume includes determining the largest volume according to the equation ##EQU16## where V 1 =smallest gun volume V 2 =largest gun volume BP=bubble period GT=ghost time.
References Cited (Backward Citations)
USRE23552E
Cited
US3437170A
Cited
US3460064A
Cited
US3602878A
Cited
US3893539A
Cited
US4146871A
Cited
US4064479A
Cited
GB1542261A
Cited
GB2062227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-05-09 | 1986-11-08 | 1987-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-05-09 | 1990-11-08 | 1991-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-05-09 | 1994-11-08 | 1995-05-10 | $7700.00 | Window Closed / Lapsed |