A treatment agent for associated gas in production wells of incinerated oil reservoirs and its preparation method and application

Abstract

The invention provides an in-situ-combustion producing-well associated gas treating agent and a preparing method and application thereof. The associated gas treating agent comprises mixed alcohol, ammonium chloride, dihydropyridine, ammonia water, ethylene oxide, propylene oxide, diesel oil, oleic acid, stearic acid, triethanolamine, thiourea, polyethylene-glycol p-isooctyl phenyl ether and acrolein, and the mass ratio of mixed alcohol to ammonium chloride to dihydropyridine to ammonia water to ethylene oxide to propylene oxide to diesel oil to oleic acid to stearic acid to triethanolamine to thiourea to polyethylene-glycol p-isooctyl phenyl ether to acrolein is (8-12):(1-3):(1-3):(18-25):(3-7):(3-7):(25-35):(8-14):(1-3):(2-5):(3-6):(1-3):(4-7). The associated gas treating agent and associated gas of an in-situ-combustion producing well can be reacted, discharging of harmful gas can be reduced, the personal safety of on-well operating persons can be protected, and pollution to the environment can be reduced.

Description

technical field [0001] The invention belongs to the technical field of oil recovery in oilfields, and in particular relates to a treatment agent for treating associated gas in production wells of burning oil layers, a preparation method and application thereof. Background technique [0002] my country is rich in heavy oil resources, and the proven and controlled reserves have reached 16×10 8 t, is the fourth largest producer of heavy oil in the world after the United States, Canada and Venezuela. Heavy oil is mainly distributed in Shengli, Liaohe, Henan, Tahe, Tuha, Xinjiang and other oil fields. my country's onshore heavy oil resources account for more than 20% of the total petroleum resources, and the proven and controlled reserves are about 4 billion tons. The annual domestic heavy oil production accounts for about 10% of the total crude oil production. Thermal recovery technologies for heavy oil reservoirs mainly include steam huff and puff, steam flooding, and combust...

AI Technical Summary

Problems solved by technology

The associated gas production of production wells is as high as several thousand cubic meters per day, which seriously affects the normal production of the oil field, endangers the health and safety of employees and the people in surrounding villages, and pollutes the environment

[0003] At present, after decades of hard work, researchers have found various methods to deal with harmful gases, but there is still no effective treatment agent that can better solve the safety problems of associated gas in production wells