Substituted saccharides or glycosides and use thereof in a drilling fluid composition

Patent metadata

Field	Value
Publication number	US-11713409-B2
Application number	US-201916768639-A
Country	US
Kind code	B2
Filing date	Jul 5, 2019
Priority date	Jul 6, 2018
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

The present invention relates to substituted saccharides or glycosides and their use in drilling fluid compositions. The substituted saccharide or glycoside bears a substituent A, a substituent B and a substituent C, wherein the substituent A comprises in its structure a groupthe substituent B comprises in its structure a groupand the substituent C comprises in its structure a unit —NH—R7—. The definition of each group is described in the description. The drilling fluid composition can show good temperature resistance, filtration loss reducing reduction property, pollution resistance, inhibition property, lubricating property or reservoir protection property, and has no biotoxicity.

First claim

The invention claimed is:

1. A mixture comprising a compound X, a compound Y, and a compound Z, wherein:
the compound X is one or more compounds selected from the group consisting of compounds represented by formula (II-1) and compounds represented by formula (II-2),
the compound Y is one or more compounds selected from the group consisting of compounds represented by formula (III-1), compounds represented by formula (III-2), and compounds represented by formula (III-3), and
the compound Z is one or more compounds selected from the group consisting of compounds represented by formula (IV-1), compounds represented by formula (IV-2), and compounds represented by formula (IV-3),

wherein substituent groups in formulae (II-1), (II-2), (II-3), (III-1), (III-2), (III-3), (IV-1), (IV-2), and (IV-3) is same or different from each other,
R 1 is selected from the group consisting of hydrogen and C1-20 linear or branched alkyls,
R 2 is a C1-20 linear or branched alkyl,
R 3 is a C2-6 linear or branched trivalent alkyl,
R 4 is a C2-6 linear or branched alkylene group,
R 5 is a C 3-6 linear or branched trivalent alkyl,
R 6 is a C2-8 linear or branched alkylene,
R 7 is a C2-6 linear or branched alkylene,
R′ is a C 1-4 linear or branched alkyl,
Rc is a C1-5 linear or branched alkyl,
R 10 is a C2-6 linear or branched alkylene,
L 1 is selected from a single bond, C2-10 linear or branched alkylenes, —C(═O)—C2-10 linear or branched alkylenes, —C(═O)O—C2-10 linear or branched alkylene-C(═O)NH—C2-10 linear or branched alkylenes, C2-5 linear or branched alkylene-C(═O)—C2-5 linear or branched alkylenes, C2-5 linear or branched alkylene-C(═O)O—C2-5 linear or branched alkylenes, C2-5 linear or branched alkylene-C(═O)NH—C2-5 linear or branched alkylenes,
L 2 is a single bond or a C2-10 linear or branched alkylenes, M is hydrogen, an alkali metal, or ammonium (NH 4 ),
m is an integer of 1-3,
n is a number ranging from 0 to 3,
a is a number ranging from 0 to 6,
b is a number ranging from 1 to 5,
a1 is a number ranging from 0 to 3, and
a2 is a number ranging from 0 to 3,
wherein a=0 and b=1 do not occur simultaneously, or a1=0, a2=0, and b=1 do not occur simultaneously,
p is a number ranging from 2 to 30,
q is a number ranging from 0 to 30, and
v is a number ranging from 0 to 30.

2. The mixture according to claim 1 , wherein:
in the compound X, a1=0, a2=0, and n=1,
in the compound Y, n is 0, Rc is methyl, a1 is a number ranging from 1 to 2, a2 is a number ranging from 1 to 2, b is a number ranging from 2 to 3, and m is 1, and
in the compound Z, n is 0, a1 is 0, a2 is a number ranging from 1 to 2, b is a number ranging from 2 to 4, and v=0, and
wherein a weight ratio of a compound X, a compound Y, and a compound Z is 20-30:30-40:10-25.

3. The mixture according to claim 1 , having a cationicity of from 0.10 to 0.80 mmol/g, and/or an amine value of from 0.40 to 1.65 mmol/g.

4. A drilling fluid composition, comprising a drilling fluid base fluid that comprises the mixture according to claim 1 and water.

5. The drilling fluid composition according to claim 4 , wherein the mixture is present in an amount of 60 to 95 wt %, based on 100 wt % of the drilling fluid base fluid.

6. A process for producing a drilling fluid composition, comprising mixing the mixture according to claim 1 , water, and optionally at least one treating agent.

7. The mixture according to claim 1 , wherein the group

 has a counter anion, and/or R 2 is a C1-10 linear or branched alkyl.

8. The mixture according to claim 7 , wherein the counter anion of group

 is a halogen anion, and/or R 2 is a C1-4 linear or branched alkyl.

9. The mixture according to claim 1 , wherein R 4 is ethylene or propylene.

10. The mixture according to claim 1 , wherein R 7 is ethylene or propylene.

11. The mixture according to claim 1 , wherein R 5 is trivalent propyl or trivalent butyl, and/or R6 is ethylene or propylene.

12. The mixture according to claim 1 , wherein R 3 is ethylene or propylene, and/or L 1 is a linking group having no more than 10 carbon atoms, and/or R 10 is ethylene or propylene, and/or L 2 is a linking group having no more than 10 carbon atoms, and/or R′ is methyl or ethyl.

13. The mixture according to claim 1 , wherein L 1 is a single bond, a C2-10 linear or branched alkylene, a —C(═O)—C2-10 linear or branched alkylene, a —C(═O)O—C2-10 linear or branched alkylene, a —C(═O)NH—C2-10 linear or branched alkylene, a C2-5 linear or branched alkylene-C(═O)—C2-5 linear or branched alkylene, a C2-5 linear or branched alkylene-C(═O)O—C2-5 linear or branched alkylene, a C2-5 linear or branched alkylene-C(═O)NH—C2-5 linear or branched alkylene, and/or L2 is a single bond or a C2-10 linear or branched alkylene.

14. The mixture according to claim 13 , wherein L 1 is —C(═O)NH—C2-10 linear or branched alkylene, and/or L2 is a single bond.

15. The mixture of according to claim 1 , wherein Rc is a C1-5 linear or branched alkyl or C1-4 linear or branched alkyl, and/or R 5 is trivalent propyl or trivalent butyl.

16. The mixture according to claim 1 , wherein R 1 are each independently selected from the group consisting of hydrogen and C1-10 linear or branched alkyl.

17. The mixture according to claim 1 , wherein: in the formula (II-2), a1=0, a2=0, and n=1, and/or
in the formula (III-2) or formula (III-3), n is 0, Rc is methyl, a1 is a number ranging from 0 to 3 or from 1 to 2, a2 is a number ranging from 0 to 3 or from 1 to 2, b is a number ranging from 1 to 4 or from 2 to 3, and m is 1, and/or
in the formula (IV-2) or formula (IV-3), n is 0, a1 is 0, a2 is a number ranging from 1 to 3 or from 1 to 2, b is a number ranging from 1 to 5 or from 2 to 4, and v=0.

18. The mixture according to claim 3 , having a cationicity of from 0.25 to 0.50 mmol/g, and/or an amine value of from 0.83 to 1.32 mmol/g.

19. The composition according to claim 4 , further comprising at least one treating agent in an amount of 18.3 to 41.7 g, based on 100 mL of the drilling fluid base fluid.

20. The process according to claim 6 , comprising firstly mixing the mixture with water to obtain an aqueous mixture, and then mixing the aqueous mixture with at least one treating agent, and carrying out an aging treatment at a temperature in the range of 120-200° C. for a duration of 10-30 hours.

21. The drilling fluid composition according to claim 4 , further comprising at least one treating agent is present in an amount of 10 to 70 g, based on 100 mL of the drilling fluid base fluid.

22. The drilling fluid composition according to claim 4 , further comprising at least one treating agent selected from the group consisting of a tackifier, a flow form modifier, a filtration loss reducer, a high temperature stabilizer, a plugging agent, an inhibition enhancer, and a pH adjuster.

Assignees

• China Petroleum & Chem Corp
• Sinopec Petroleum Engineering Tech Service Co Ltd
• Drilling Engineering Tech Research Inst Of Sinopec Zhongyuan Petroleum Engineering Co Ltd
• Sinopec Zhongyuan Petroleum Eng Co Ltd

Inventors

• Wang Zhonghua
• Si Xiqiang

Classifications

• C09K8/12 Primary

  containing synthetic organic macromolecular compounds or their precursors · CPC title

• C09K8/032

  Inorganic additives · CPC title

• C09K8/035

  Organic additives · CPC title

• C09K8/10

  Cellulose or derivatives thereof · CPC title

• C09K8/08 Primary

  containing natural organic compounds, e.g. polysaccharides, or derivatives thereof · CPC title