Modified methyl glucoside treating agent for drill fluid

Abstract

The invention discloses a treating agent for drill fluid, namely a modified methyl glucoside treating agent for the drill fluid, which is prepared by the following chemical reactions: (1) heating 1 portion of a methyl glucoside mother liquor to a temperature of between 40 to 80 DEG C and distilling a part of impurilities out; (2), preparing 40 percent solution by dissolving 0.5 to 1 portion of a sulfonating reagent in a proper amount of water; (3) adding 0.1 to 0.5 portion of intermedium aldehydes and the treated methyl glucoside mother liquor obtained by step (1) into the solution obtained by the step (2), uniformly stirring the mixture at a temperature of 80 to 110 DEG C and a PH value of 8 to 12 and refluxing the mixture for 7 to 10h to allow the mixture to undergo complete chemical reaction; and (4) making the resultant of the reaction into a colloid or baking the resultant until the resultant is completely dry, and treating the product to obtain the modified methyl glucoside treating agent. The modified methyl glucoside treating agent has the advantages of strong inhibitive ability, lubricating property and temperature resistance, no side effect on the performance of the drill fluid, no negative effect on other drilling operation procedures and no pollution to the environment.

Description

technical field [0001] The invention relates to a treatment agent for drilling fluid, in particular to a modified methyl glucoside treatment agent for drilling fluid. Background technique [0002] With the gradual decline of world oil and natural gas reserves and the increasing consumption of oil and gas, oil drilling is becoming more and more difficult. It is mainly manifested in that with the depletion of oil and gas reserves in shallow reservoirs, the exploitation depth of oil wells continues to deepen, the complex formations encountered by drilling increase, and the drilling cost increases greatly. [0003] At present, in the field of oil drilling in the world and domestically, the instability of the shale well section wall has always been a problem that has not been completely solved by drilling technology. A large number of field practices have shown that in many difficult wells, the difficulty lies in the inability to solve the problem of wellbore instability in shal...

AI Technical Summary

Problems solved by technology

However, because a single inorganic salt or organic salt inevitably contains a large number of anions, while increasing the salinity, the real useful cations do not increase, and the inhibitory effect on the drilling fluid is not enhanced, which leads to the rheological change of the drilling fluid. and wall-building deterioration

In order to adjust the performance of the drilling fluid, a large amount of treatment agent must be added, which increases the cost of the drilling fluid

[0010] (3) When methyl glucoside is added to the drilling fluid, it is easy to cause the drilling fluid to foam, and the amount added is large, which indirectly leads to an increase in cost; and its temperature resistance is not good, so it is difficult to use on a large scale

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