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A kind of preparation method of zwitterionic alkyl glucoside for drilling fluid

An alkyl glycoside, zwitterion technology, applied in the preparation of sugar derivatives, drilling compositions, chemical instruments and methods, etc., to achieve the effects of mild reaction conditions, excellent temperature resistance, and short operation time

Active Publication Date: 2017-10-17
CHINA PETROLEUM & CHEM CORP +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although cationic alkyl glycosides have better temperature resistance and inhibition performance in drilling fluids, there is still a lot of room for improvement

Method used

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  • A kind of preparation method of zwitterionic alkyl glucoside for drilling fluid
  • A kind of preparation method of zwitterionic alkyl glucoside for drilling fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Use sodium hydroxide to adjust the pH value of the 50% cationic methyl glycoside aqueous solution to 8; add 50% cationic methyl glycoside aqueous solution 72.16g , 4.50 g of formaldehyde aqueous solution and 5.15 g of sodium bisulfite were reacted for 2 hours under normal pressure at a temperature of 80 ° C to obtain a reddish-brown zwitterionic methyl glucoside aqueous solution; the zwitterionic methyl glucoside aqueous solution was distilled and dehydrated under reduced pressure to obtain a viscous Zwitterionic methyl glycoside product.

[0016] Embodiment 2~5 steps are identical with embodiment 1, and concrete reaction substance and reaction condition are as shown in table 1:

[0017] Table 1 Amounts of reacting substances and reaction conditions

[0018]

[0019] The properties of the zwitterionic alkyl glycoside products prepared in Examples 1 to 5 in drilling fluid are shown in Table 2:

[0020] Table 2 Comparison of drilling fluid performance indicators of t...

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Abstract

Belonging to technical field of oilfield chemical drilling fluid treatment agents, the invention discloses a preparation method of amphion alkyl glucoside for drilling fluid. The steps include: (1) adjusting the pH value of a cation alkyl glucoside aqueous solution to 8-10 by a neutralization agent; (2) adding a formaldehyde aqueous solution and sodium bisulfite into the aqueous solution in step (1), with the cation alkyl glucoside, formaldehyde and sodium bisulfate being in a mole ratio of 1:0.5-2.0:0.5-2.0; (3) subjecting the mixed solution of the cation alkyl glucoside, formaldehyde and sodium bisulfate to reaction for 2-8h at 80-110DEG C under atmospheric pressure, thus obtaining an amphion alkyl glucoside aqueous solution; and (4) subjecting the amphion alkyl glucoside aqueous solution to pressure reduced distillation for dehydration, thus obtaining a sticky amphion alkyl glucoside product with excellent temperature resistance and shale inhibition performance. Under the circumstances of an adding amount of 3% in the drilling fluid and 16h of aging at 160DEG C, the drilling fluid has good rheological properties and fluid loss reduction performance. The primary recovery rate of shale is greater than 98% and the relative recovery rate is greater than 99%.

Description

Technical field: [0001] The invention relates to a preparation method of an alkyl glycoside derivative, in particular to a preparation method of a zwitterionic alkyl glycoside, and belongs to the technical field of oilfield chemical drilling fluid treatment agents. Background technique: [0002] Aiming at the defect that the temperature resistance and inhibition performance of alkyl glycosides need to be improved, the patent application number 201210273639.8 discloses a preparation method of cationic alkyl glycosides for drilling fluids. The steps are as follows: (1) the molar ratio is epichlorohydrin : Water: Catalyst 1:12~20:0.02~0.12 The raw material is reacted at a temperature of 60~100°C for 3~8h to obtain an aqueous solution of 3-chloro-1,2-propanediol; (2) the molar ratio is alkyl Glycoside: 3-Chloro-1,2-propanediol is 1:0.5~5 raw materials, after reacting at a temperature of 80~110°C for 0.5~4.0h, an aqueous solution of chlorohydrin glycoside is obtained; (3) the abo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07H15/04C07H1/00C09K8/035
Inventor 司西强魏军王中华甄剑武万龙吕跃滨
Owner CHINA PETROLEUM & CHEM CORP
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