US4053422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols
Assignee: Texaco Inc
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Filing: 1976-06-16
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Granted: 1977-10-11
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Expires: 1996-06-16
Abstract
Abstract Aqueous drilling fluids containing a minor amount of polyethoxylated tetraalkyl acetylenic diols. Such fluids are especially useful where reduced torque drilling fluids are needed. Another embodiment of this invention relates to a method of drilling utilizing the above-described fluids.
Inventors
- 👤 Thad O. Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/04; C09K8/14; C09K8/18; C09K8/22
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
69 words
An aqueous drilling fluid containing in the aqueous phase clay solids dispersed therein by a ferrochrome lignosulfonate dispersant and containing a polyethoxylated tetramethyl decynediol or a sulfurized polyoxyethylated tetramethyl decynediol wherein the number of ethylene oxide groups therein is on an average of from 3.5 to about 30, said decynediol being present in said drilling fluid in an amount of from about 0.5 to about 5 pounds per barrel.
Claim 2
Dependent Claim
69 words
An aqueous drilling fluid containing in the aqueous phase clay solids dispersed therein by a ferrochrome lignosulfonate dispersant and containing a polyethoxylated tetramethyl decynediol or a sulfurized polyoxyethylated tetramethyl decynediol wherein the number of ethylene oxide groups therein is on an average of from 3.5 to about 30, said decynediol being present in said drilling fluid in an amount of from about 0.5 to about 5 pounds per barrel.
Claim 3
Dependent Claim
30 words
An aqueous drilling fluid as claimed in claim 1 wherein said decynediol is present in said aqueous phase in an amount of from about 1 to 3 pounds per barrel.
Claim 4
Dependent Claim
16 words
An aqueous drilling fluid as claimed in claim 1 wherein said decynediol is a sulfurized decynediol.
Claim 5
Dependent Claim
27 words
An aqueous drilling fluid as claimed in claim 3 wherein the sulfur content varies from about 1 to 8% weight, based on the weight of said decynediol.
Claim 6
Dependent Claim
28 words
An aqueous drilling fluid as claimed in claim 4 wherein the sulfur content is from about 2 to 6% by weight, based on the weight of said decynediol.
Claim 7
Dependent Claim
25 words
An aqueous drilling fluid as claimed in claim 1 wherein said decynediol is 2, 4, 7, 9 tetramethyl-5-decyne -4-7-diol containing 3.5 moles of ethylene oxide.
Claim 8
Dependent Claim
22 words
An aqueous drilling fluid as claimed in claim 6 wherein said decynediol is sulfurized and contains about 6% by weight of sulfur.
Claim 9
Dependent Claim
23 words
An aqueous drilling fluid as claimed in claim 1 wherein said decynediol is 2, 4, 7, 9-tetramethyl-5-decyne-4-7-diol containing 10 moles of ethylene oxide.
Claim 10
Dependent Claim
22 words
An aqueous drilling fluid as claimed in claim 8 wherein said decynediol is sulfurized and contains about 6% by weight of sulfur.
Claim 11
Dependent Claim
23 words
An aqueous drilling fluid as claimed in claim 1 wherein said decynediol is 2, 4, 7, 9-tetramethyl-5-decyne-4-7-diol containing 30 moles of ethylene oxide.
Claim 12
Dependent Claim
22 words
An aqueous drilling fluid as claimed in claim 10 wherein said decynediol is sulfurized and contains about 6% by weight of sulfur.
Claim 13
Dependent Claim
110 words
In a method of drilling wells wherein a drilling fluid is circulated in the well in contact with an earth formation during the drilling operation, the improvement which comprises contacting said earth formation with an aqueous drilling fluid containing in the aqueous phase clay solids dispersed therein by a ferrochrome lignosulfonate dispersant and containing a polyethoxylated tetramethyl decynediol or a sulfurized polyoxyethylated tetramethyl decynediol wherein the number of ethylene oxide groups therein is on an average of from 3.5 to about 30, said decynediol being present in an amount of from about 0.5 to about 5 pounds per barrel and being effective to reduce the torque of said drilling fluid.
Claim 14
Dependent Claim
110 words
In a method of drilling wells wherein a drilling fluid is circulated in the well in contact with an earth formation during the drilling operation, the improvement which comprises contacting said earth formation with an aqueous drilling fluid containing in the aqueous phase clay solids dispersed therein by a ferrochrome lignosulfonate dispersant and containing a polyethoxylated tetramethyl decynediol or a sulfurized polyoxyethylated tetramethyl decynediol wherein the number of ethylene oxide groups therein is on an average of from 3.5 to about 30, said decynediol being present in an amount of from about 0.5 to about 5 pounds per barrel and being effective to reduce the torque of said drilling fluid.
Claim 15
Dependent Claim
28 words
A method as claimed in claim 12 wherein said decynediol is present in said aqueous phase in an amount of from about 1 to 3 pounds per barrel.
Claim 16
Dependent Claim
14 words
A method as claimed in claim 12 wherein said decynediol is a sulfurized decynediol.
Claim 17
Dependent Claim
26 words
A method as claimed in claim 14 wherein the sulfur content varies from about 1 to 8% by weight, based on the weight of said decynediol.
Claim 18
Dependent Claim
26 words
A method as claimed in claim 15 wherein the sulfur content is from about 2 to 6% by weight, based on the weight of said decynediol.
Claim 19
Dependent Claim
22 words
A method as claimed in claim 12 wherein said decynediol is 2, 4, 7, 9 tetramethyl-5-decyne-4-7-diol containing 3.5 moles of ethylene oxide.
Claim 20
Dependent Claim
19 words
A method as claimed in claim 17 wherein said decynediol is sulfurized and contains about 6% weight of sulfur.
Claim 21
Dependent Claim
21 words
A method as claimed in claim 12 wherein said decynediol is 2, 4, 7, 9-tetramethyl-5-decyne-4-7-diol containing 10 moles of ethylene oxide.
Claim 22
Dependent Claim
20 words
A method as claimed in claim 19 wherein said decynediol is sulfurized and contains about 6% by weight of sulfur.
Claim 23
Dependent Claim
21 words
A method as claimed in claim 12 wherein said decynediol is 2, 4, 7, 9-tetramethyl-5-decyne-4-7-diol containing 30 moles of ethylene oxide.
Claim 24
Dependent Claim
19 words
A method as claimed in claim 21 wherein said decynediol is sulfurized contains about 6% by weight of sulfur.
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) | 1980-10-10 | 1981-04-11 | 1981-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-10-10 | 1985-04-11 | 1985-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-10-10 | 1989-04-11 | 1989-10-11 | $7700.00 | Window Closed / Lapsed |