Mud ball forming agent and synthesis method thereof

Abstract

The invention provides a mud ball forming agent. The molecular formula of the mud ball forming agent is (CH2CH2)xNyR2, wherein x, y and z represent the numbers of groups; x is more than 1, y is more than 2 and z is more than 1; an R is an alkyl having 5 to 18 carbon atoms. The invention also provides a synthesis method of the mud ball forming agent, which comprises:1) dissolving a proper amount of ethyleneamine in ethanol of which the volume is twice that of the ethyleneamine, pouring the mixture into a reaction bottle and heating the reaction bottle to perform refluxing; 2) pouring a proper amount of halogenated hydrocarbon into a dropping funnel and adding the halogenated hydrocarbon into the reaction bottle dropwise by 15 to 20 times; 3) preparing solution of sodium hydroxide of which the molar equivalent weight is equal to that of the halogenated hydrocarbon and dripping the solution of sodium hydroxide into the reaction bottle; 4) after the dripping of the halogenated hydrocarbon and the sodium hydroxide is finished, adding a proper amount of solution of ethanol; and 5) cooling the solution and separating generated sodium chloride to obtain the product. The synthesis route and method of the mud ball forming agent are simple; and when added with a small amount of the mud ball forming agent of the invention, surface soil and formation mud shale can be made into mud balls stably under indoor conditions.

Description

technical field [0001] The invention relates to a mud ball generating agent required in the evaluation process of an anti-mud ball agent and a mud ball clearing agent used in drilling engineering and a synthesis method thereof. Background technique [0002] During the drilling process, mud balls are likely to be generated when encountering mud shale, which leads to poor sand removal effect of the vibrating screen (sand and desilter), which further leads to complex downhole situations and, in severe cases, pipe sticking accidents. [0003] At present, there is no literature report on the formation mechanism and method of mud balls, and no unified evaluation method has been established, which brings difficulties to the development and evaluation of anti-sludge ball agents and mud ball removal agents. Contents of the invention [0004] The technical problem to be solved in the present invention is to provide a mud ball generating agent and its synthesis method, which can make...

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Problems solved by technology

[0002] During the drilling process, when mud shale is encountered, mud balls are likely to be generated, which leads to poor sand removal effect of the vibrating screen (sand remover and desilter), which further leads to the occurrence of downhole complex situations, and in severe cases, pipe sticking accidents occur

[0003] At present, there are no literature reports on the formation mechanism and method of mud balls, and no unified evaluation method has been established, which brings difficulties to the development and evaluation of mud ball prevention agents and mud ball removal agents.

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