US4401575A
Expired / Lapsed
US
⏱️ 0.0 years remaining
BS And W in crude oil streams
Assignee: Shell USA Inc
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Filing: 1981-08-10
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Granted: 1983-08-30
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Expires: 2001-08-10
Abstract
Abstract An improvement is provided in a process for measuring BS&W in crude oil by centrifugal separation of dry oil from wet oil and comparison of the dielectric constants of the two, the improvement being the use of at least two seals separating a dry oil chamber from a wet oil chamber and means for flushing the space between the seals with dry oil.
Inventors
- 👤 Thomas L. Stewart
- 👤 Florian C. Demny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:38
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/26; G01N33/28; G01N33/2823
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
151 words
A process for measuring the water and sediment content of a wet stream which is predominantly non-aqueous, comprising, removing a sample of the wet stream, admitting the wet stream sample to an outer chamber containing an inner chamber having a wall formed of a filter, rotation the inner chamber while pressuring the wet stream sample from the outer chamber into the inner chamber, whereby sediment is filtered from the wet stream sample passing into the inner chamber and centrifugal force in the inner chamber forces water in the wet stream sample to remain in the outer chamber and thereby form a dry sample stream, passing the dry sample stream axially from the inner chamber to an aligned chamber which is separated from the outer chamber by at least two seals having a space therebetween, and passing at least a portion of the dry stream sample into the space between the seals.
Claim 2
Dependent Claim
151 words
A process for measuring the water and sediment content of a wet stream which is predominantly non-aqueous, comprising, removing a sample of the wet stream, admitting the wet stream sample to an outer chamber containing an inner chamber having a wall formed of a filter, rotation the inner chamber while pressuring the wet stream sample from the outer chamber into the inner chamber, whereby sediment is filtered from the wet stream sample passing into the inner chamber and centrifugal force in the inner chamber forces water in the wet stream sample to remain in the outer chamber and thereby form a dry sample stream, passing the dry sample stream axially from the inner chamber to an aligned chamber which is separated from the outer chamber by at least two seals having a space therebetween, and passing at least a portion of the dry stream sample into the space between the seals.
Claim 3
Dependent Claim
27 words
The process of claim 1 wherein capacitance of the dry stream sample is measured prior to passing the dry stream sample into the space between the seals.
Claim 4
Dependent Claim
49 words
The process of claim 1 wherein the end of the aligned chamber opposite the end adjacent the outer chamber is provided with a seal, and a minor portion of the dry stream sample is passed into a space outside the aligned chamber which is adjacent the last said seal.
Claim 5
Dependent Claim
19 words
The process of claim 3 wherein the minor portion of the dry stream sample subsequently is sent to disposal.
Claim 6
Dependent Claim
13 words
The process of claim 1 wherein the wet stream is pipeline crude oil.
Claim 7
Independent Claim
125 words
An apparatus for measuring the water and sediment content of a wet stream which is predominantly non-aqueous, comprising, means for removing a sample of the wet stream, means for admitting the wet stream sample to an outer chamber containing an inner chamber having a wall formed of a filter, means for rotating the inner chamber while pressuring the wet stream sample from the outer chamber intothe inner chamber to form a dry sample stream, means for passing the dry sample stream axially from the inner chamber to an aligned chamber which is separated from the outer chamber by at least two seals having a space therebetween, and means for passing at least a portion of the dry stream sample into the space between the seals.
Claim 8
Independent Claim
125 words
An apparatus for measuring the water and sediment content of a wet stream which is predominantly non-aqueous, comprising, means for removing a sample of the wet stream, means for admitting the wet stream sample to an outer chamber containing an inner chamber having a wall formed of a filter, means for rotating the inner chamber while pressuring the wet stream sample from the outer chamber intothe inner chamber to form a dry sample stream, means for passing the dry sample stream axially from the inner chamber to an aligned chamber which is separated from the outer chamber by at least two seals having a space therebetween, and means for passing at least a portion of the dry stream sample into the space between the seals.
Claim 9
Dependent Claim
35 words
The apparatus of claim 6 including means for measuring the capacitance of the dry stream sample which is located upstream of the means for passing the dry stream sample into the space between the seals.
Claim 10
Dependent Claim
52 words
The apparatus of claim 6 including a seal at the end of the aligned chamber which is opposite the end adjacent the outer chamber, and means for passing a minor portion of the dry stream sample into contact with that portion of the last said seal which is outside the aligned chamber.
Claim 11
Dependent Claim
20 words
The apparatus of claim 8 including means for subsequently sending the minor portion of the dry stream sample to disposal.
Claim 12
Dependent Claim
17 words
The apparatus of claim 9 wherein the wet stream is crude oil which is in a pipeline.
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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |