Cleaning agent for removing emulsion deposits and preparation method and application of cleaning agent

Abstract

The invention provides a cleaning agent for removing emulsion deposits and a preparation method and application of the cleaning agent. The cleaning agent for removing the emulsion deposits comprises,by 100 parts of weight, 10-30 parts of glycol ether compounds and esterification products of glycol ether compounds and alkyl carboxylic acid compounds, 10-40 parts of a double alkyl chain quaternaryammonium salt cationic surfactant, 0.1-5 parts of polyether amine compounds, 0-10 parts of a corrosion inhibitor, 0-10 parts of a defoaming agent and the balance water or saline water. The invention further provides a preparation method of the cleaning agent for removing the emulsion deposits. The cleaning agent can effectively remove the emulsion deposits of a gathering and transportation systemand has the advantages that the formula is environmentally friendly, the usage amount is low, the cleaning effect is good, oil and water are separated after cleaning, and a using method is simple.

Description

technical field [0001] The invention relates to a cleaning agent, in particular to a cleaning agent for removing latex deposits, and belongs to the technical field of composite materials. Background technique [0002] The natural gas extracted from natural gas wells will be mixed with impurities and solid substances at the bottom of the well, so the extracted natural gas needs to be separated and purified by a separator before being transported. However, the separator cannot separate some of the heavy hydrocarbon compounds and fine solid particles in the natural gas, so these substances will be transported together with the natural gas, so there will be aggregates of heavy hydrocarbon compounds and fine solid particles in the gathering and transportation system. With the increase of aggregates, fine solid particles are easily coated by heavy hydrocarbons and other chemicals in the gathering system, forming latex-like deposits. This latex-like deposit can firmly adhere to th...

AI Technical Summary

Problems solved by technology

The process is relatively complicated, and the whole process needs to be shut down, and the deposit it targets is sulfur scale, and the formula is mainly sulfur solvent

[0008] Chinese patent application CN104152127A discloses a multifunctional cleaning agent for oil fields and its preparation method. Although it is a multifunctional cleaning agent, it has many limitations

First of all, nonylphenol polyoxyethylene ether surfactants are used in the components of the cleaning agent, which will quickly decompose into nonylphenol in the environment, and nonylphenol is a recognized environmental hormone, which is extremely It is harmful and has been banned internationally; secondly, the use temperature of the cleaning agent needs to reach 60-80°C, while the temperature of the ground gathering and transportation system in actual production is generally room temperature, and the maximum temperature is generally not higher than 50°C. This has just limited its application in actual production conditions; In addition, the amount of the cleaning agent reaches more than 1.5 times the internal volume of the gathering pipeline, and it needs to be washed repeatedly, which will cost a lot of money for the gathering pipeline of several kilometers long Cleaning agent is very difficult to operate

Finally, the cleaning principle of the cleaning agent for oily substances is solubilization and dispersion, that is to say, the oily substances remain in the water body after cleaning, that is, the emulsification of gas field water, which will be very important for the discharge or reinjection of gas field water. challenge

[0009] To sum up, the existing natural gas pipeline cleaning agent technology is relatively small, and there are still many deficiencies, it is difficult to meet the environment of field application in oil and gas fields.

Images