Patent US4369655A successfully refreshed from Google Patents.
US4369655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of determining the concentration of solid lubricants in drilling fluids
Assignee: Baroid Technology Inc
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Filing: 1980-12-12
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Granted: 1983-01-25
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Expires: 2000-12-12
Abstract
Abstract A method of determining the concentration of spherical solids used as lubricants in drilling fluids in which the solid lubricant together with other solids of a given particle size are separated from a predetermined volume of the drilling mud, are admixed with a liquid, transferred to a graduated measuring tube which permits a direct reading of the volume of the solid lubricant.
Inventors
- 👤 Forest A. Scearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:26
CPC Classifications
E; E21; E21B; E21B49/00; E21B49/005; G; G01; G01N; G01N15/00; G01N15/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
132 words
A method for determining the concentration of spherical solids used as a lubricant in a drilling fluid comprising: (a) adding a liquid to a given volume of said drilling fluid; (b) agitating the mixture of said drilling fluid and said liquid; (c) passing the mixture of said drilling fluid and said liquid through a sieve of smaller mesh size than said spherical solids; (d) removing said spherical solids and any other solids from said sieve; (e) mixing said mixture of said spherical solids and said other solids with a wetting agent for said spherical solids; (f) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; and (g) determining the volume of said spherical solids contained in said given volume of said drilling fluid.
Claim 2
Independent Claim
132 words
A method for determining the concentration of spherical solids used as a lubricant in a drilling fluid comprising: (a) adding a liquid to a given volume of said drilling fluid; (b) agitating the mixture of said drilling fluid and said liquid; (c) passing the mixture of said drilling fluid and said liquid through a sieve of smaller mesh size than said spherical solids; (d) removing said spherical solids and any other solids from said sieve; (e) mixing said mixture of said spherical solids and said other solids with a wetting agent for said spherical solids; (f) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; and (g) determining the volume of said spherical solids contained in said given volume of said drilling fluid.
Claim 3
Dependent Claim
23 words
The method of claim 1 wherein said spherical solids have a density less than that of heavier solids present in said drilling fluid.
Claim 4
Dependent Claim
17 words
The method of claim 2 wherein said polymeric material comprises a copolymer of divinyl benzene and styrene.
Claim 5
Dependent Claim
13 words
The method of claim 1 wherein said spherical solids comprise a polymeric material.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein said sieve is a 200 mesh sieve.
Claim 7
Dependent Claim
10 words
The method of claim 1 wherein said liquid comprises water.
Claim 8
Dependent Claim
13 words
The method of claim 6 wherein said spherical solids comprise a polymeric material.
Claim 9
Dependent Claim
14 words
The method of claim 6 wherein said first and second liquids are the same.
Claim 10
Dependent Claim
13 words
The method of claim 6 wherein said sieve is a 200 mesh sieve.
Claim 11
Dependent Claim
14 words
The method of claim 6 wherein said liquid solution comprises a saturated salt solution.
Claim 12
Independent Claim
349 words
A method for determining the concentration of spherical solids used as a lubricant in a drilling fluid, said spherical solids having a density intermediate that of other solids in said drilling fluid, comprising: (a) adding a first liquid to a first given volume of said drilling fluid; (b) agitating the mixture of said first given volume of said drilling fluid and said first liquid; (c) passing the mixture of said first given volume of said drilling fluid and said first liquid through a sieve of smaller mesh size than said spherical solids; (d) removing said spherical solids and said other solids from said sieve; (e) mixing said mixture of said spherical solids and said other solids with a wetting agent for said spherical solids; (f) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; (g) determining the total volume of settled solids contained in said first given volume of said drilling fluid; (h) adding a second liquid to a second given volume of said drilling fluid; (i) agitating the mixture of said second given volume of said drilling fluid and said second liquid; (j) passing the mixture of said second given volume of said drilling fluid and said second liquid through a sieve of smaller mesh size than said spherical solids; (k) removing said spherical solids and any other solids retained on said sieve; (l) mixing said spherical solids and said other solids from Step (k) with a liquid solution having a density greater than that of said spherical solids; (m) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; (n) determining the total volume of settled solids contained in said mixture of said other solids, said liquid solution and said spherical solids from Step (l); (o) determining the difference between the total volume of solids determined in Step (g) and the total volume of said settled solids determined in Step (n); and (p) determining the volume of said spherical solids contained in said second given volume of said drilling fluid.
Claim 13
Independent Claim
349 words
A method for determining the concentration of spherical solids used as a lubricant in a drilling fluid, said spherical solids having a density intermediate that of other solids in said drilling fluid, comprising: (a) adding a first liquid to a first given volume of said drilling fluid; (b) agitating the mixture of said first given volume of said drilling fluid and said first liquid; (c) passing the mixture of said first given volume of said drilling fluid and said first liquid through a sieve of smaller mesh size than said spherical solids; (d) removing said spherical solids and said other solids from said sieve; (e) mixing said mixture of said spherical solids and said other solids with a wetting agent for said spherical solids; (f) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; (g) determining the total volume of settled solids contained in said first given volume of said drilling fluid; (h) adding a second liquid to a second given volume of said drilling fluid; (i) agitating the mixture of said second given volume of said drilling fluid and said second liquid; (j) passing the mixture of said second given volume of said drilling fluid and said second liquid through a sieve of smaller mesh size than said spherical solids; (k) removing said spherical solids and any other solids retained on said sieve; (l) mixing said spherical solids and said other solids from Step (k) with a liquid solution having a density greater than that of said spherical solids; (m) permitting said mixture of said spherical solids and said other solids to settle in a graduated measuring means; (n) determining the total volume of settled solids contained in said mixture of said other solids, said liquid solution and said spherical solids from Step (l); (o) determining the difference between the total volume of solids determined in Step (g) and the total volume of said settled solids determined in Step (n); and (p) determining the volume of said spherical solids contained in said second given volume of said drilling fluid.
Claim 14
Dependent Claim
17 words
The method of claim 11 wherein said polymeric material comprises a copolymer of divinyl benzene and styrene.
Claim 15
Dependent Claim
13 words
The method of claim 12 wherein said first and second liquids comprise water.
References Cited (Backward Citations)
US4063603A
Cited
US4269279A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-24 | 1986-07-26 | 1987-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-24 | 1990-07-26 | 1991-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-24 | 1994-07-26 | 1995-01-25 | $7700.00 | Window Closed / Lapsed |