Patent US3782464A successfully refreshed from Google Patents.
US3782464A
Expired / Lapsed
US
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Device for suspending measuring instruments in a drill string
Assignee: Societe Nationale des Petroles dAquitaine SA
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Filing: 1972-08-29
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Granted: 1974-01-01
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Expires: 1992-08-29
Abstract
Abstract A collar for holding an instrument in a drill string is provided with a housing for attachment to the instrument, and elastomeric suspension means connecting the housing to the collar. Both housing and suspension means are pierced to pass drilling mud. A passage in the housing is controlled by a first valve responsive to the instrument. A second valve controls the passage defined between the housing and drill collar and containing the suspension means. The second valve is pressure responsive and closes whenever the first valve is closed. The object is to provide a sharper change in volume of drilling mud flow when the first valve is operated and consequently to transmit a clearer signal along the column of drilling mud.
Inventors
- 👤 C Quichaud
- 👤 Peuvedic J Le
- 👤 J Tinchon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:19
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/10; E21B47/00; E21B47/01; E21B47/12; E21B47/14; E21B47/18; E21B47/20; E21B47/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
164 words
A device for suspending measuring instruments inside a line of drilling pipes, consisting of a cylindrical housing having an inner annular shoulder and at least one coupling which is fixed to the measuring instrument and which contains a shoulder, a number of suspension rings each made up of two concentric ringshaped frames linked by an elastomer ring fixed to them by vulcanization, the inner frame resting on the shoulder of the corresponding coupling, and the outer frame on said shoulder of said housing incorporated in the line of drilling pipes in order to hold the measuring instrument, said coupling at its upper End carrying a ring-shaped valve adapted to cooperate with a valveseat attached rigidly to said cylindrical housing, closing of this valve taking place as the result of the force applied to the suspension device by the closure of a shutter blocking off the passage inside the said device, and this shutter being closed intermittently by a component operated by the measuring instrument.
Claim 2
Independent Claim
164 words
A device for suspending measuring instruments inside a line of drilling pipes, consisting of a cylindrical housing having an inner annular shoulder and at least one coupling which is fixed to the measuring instrument and which contains a shoulder, a number of suspension rings each made up of two concentric ringshaped frames linked by an elastomer ring fixed to them by vulcanization, the inner frame resting on the shoulder of the corresponding coupling, and the outer frame on said shoulder of said housing incorporated in the line of drilling pipes in order to hold the measuring instrument, said coupling at its upper End carrying a ring-shaped valve adapted to cooperate with a valveseat attached rigidly to said cylindrical housing, closing of this valve taking place as the result of the force applied to the suspension device by the closure of a shutter blocking off the passage inside the said device, and this shutter being closed intermittently by a component operated by the measuring instrument.
Claim 3
Dependent Claim
192 words
In a device for suspending a measuring instrument in a drilling string, said device comprising a housing for said instrument, a collar having an upper and a lower end and a plurality of suspension rings connecting said coupling to said collar, each suspension ring comprising two concentric annular frames connected by a resilient elastomeric ring, with one frame connected to the housing and the other to the collar, said housing and said suspension rings being both pierced by at least one passageway permitting the flow of drilling mud therethrough, and a valve member positioned to open and close a passageway in said housing in response to indications by said instrument, the improvement which comprises an annular valve member encircling said housing and a cooperating annular valve seat so positioned on the inside of said collar between said suspension rings and the upper end of said collar but beneath said annular valve member that the increased pressure exerted by said drilling mud against said housing upon closing of a passageway in said housing forces said annular valve member against said annular seat, thus closing said at least one passageway in said suspension ring.
Claim 4
Dependent Claim
192 words
In a device for suspending a measuring instrument in a drilling string, said device comprising a housing for said instrument, a collar having an upper and a lower end and a plurality of suspension rings connecting said coupling to said collar, each suspension ring comprising two concentric annular frames connected by a resilient elastomeric ring, with one frame connected to the housing and the other to the collar, said housing and said suspension rings being both pierced by at least one passageway permitting the flow of drilling mud therethrough, and a valve member positioned to open and close a passageway in said housing in response to indications by said instrument, the improvement which comprises an annular valve member encircling said housing and a cooperating annular valve seat so positioned on the inside of said collar between said suspension rings and the upper end of said collar but beneath said annular valve member that the increased pressure exerted by said drilling mud against said housing upon closing of a passageway in said housing forces said annular valve member against said annular seat, thus closing said at least one passageway in said suspension ring.
Claim 5
Dependent Claim
34 words
Device as claimed in claim 2 in which there are a plurality of passageways in said housing, only one of which is closed by the valve member responsive to the indications of said instrument.
Claim 6
Dependent Claim
18 words
Device as claimed in claim 2 in which said annular valve seat is provided with an elastomeric lining.
Claim 7
Dependent Claim
34 words
Device as claimed in claim 2 in which the resilience of said elastomeric rings separates said annular valve member and valve seat when the valve responsive to the indications of said instrument is opened.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-31 | 1977-07-02 | 1978-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-31 | 1981-07-02 | 1982-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-31 | 1985-07-02 | 1986-01-01 | $7700.00 | Window Closed / Lapsed |