Foaming water discharge agent and its preparation

Abstract

The invention discloses a foam dewatering agent. The foam dewatering agent is prepared by the following raw materials by weight percentage: 5-10% of triethylene tetramine, 10-20% of diethylenetriamine, 1-30% of oleic acid, 2-10% of glacial acetic acid, 5-15% of maleic anhydride, 5-10% of acrylic acid, 2-7% of citric acid, 5-30% of imidazoline, 5-30% of LAS, 5-10% of HCl aqueous solution with the mass percentage concentration of 20%, 5-10% of NaOH aqueous solution with the mass percentage concentration of 30% and 10-30% of water. The foam dewatering agent integrates foam dewatering, corrosion inhibiting and antiscaling functions, as one potion has the functions such as foam dewatering, corrosion inhibiting and antiscaling and the like at the same time, so that one-time filling-up can replace the traditional three-time respective filling-up, thus reducing the cost, simplifying the process without affecting the functions and prolonging the period of validity. The invention also discloses a method for preparing the foam dewatering agent.

Description

technical field [0001] The invention relates to the technical fields of natural gas well anticorrosion, scale prevention, and foam drainage and gas recovery, in particular to a foam drainage agent integrating foam drainage, pipeline anticorrosion, salt and scale inhibition, and a preparation method thereof. Background technique [0002] In the middle and late stages of natural gas well production, due to the decline in the formation energy of the gas well itself, formation water also enters the wellbore with natural gas and accumulates at the bottom of the well or near the well, resulting in a decrease in the gas production of the gas well or the gas well being drowned by water. And because the formation water contains a large amount of minerals such as calcium, magnesium, barium, chlorine and other scale-prone ions, as well as the carbon dioxide and hydrogen sulfide corrosive gases contained in natural gas, there are also scaling and corrosion phenomena in gas wells. At pre...

AI Technical Summary

Problems solved by technology

[0003] Traditional natural gas well foam drainage agents, corrosion inhibitors, and anti-scaling agents are all separate agents, and each agent has only a single performance (such as: corrosion inhibitors only have anti-corrosion properties; anti-scaling agents only have scale-inhibiting properties. non-foaming and anti-corrosion properties)

Due to the incompatibility of various medicaments, the medicaments affect the efficacy of each other. Not only must they be filled separately during the filling process, but the filling time must also be separated from each other, resulting in increased filling costs and complicated filling processes. ; Also makes the period of validity of each medicament greatly shortened, and the active ingredients of the medicament also offset each other, thereby failing to achieve the expected use effect, resulting in waste of medicament