Use of residual active sludge protein as foam drilling liquid and preparing method thereof

Abstract

This invention involves the surplus activation and pollutes proteins as the application of the foam well drilling liquid and prepares the method, utilize surplus active mud person who foam of protein is it foam the pharmaceutical as foam well drilling to use it for, it is to use active mud the impractical law or alkali law that it prepares the method, yes temperature is 110-148 deg.C hydrolysis one hour under the terms, it is appear impurity win protein liquid, and then go protein liquid after the impurity transfer pH value to filter, to a little becoming used as preparing hydrolysising proteins of foam well drilling liquid alkalinly promptly, and then make and foam pharmaceutical and dispose the foam well drilling liquid with the protein hydrolysats. Invention this utilize surplus active mud characteristic of foaming of protein, hydrolysis active mud protein regard as foam well drilling liquid foam the pharmaceutical, its bubble is of good performance, the foaming amount is big, can produce a large number of foam after contacting the gas.

Description

technical field [0001] The invention relates to the application of hydrolyzed protein from surplus activated sludge as foam drilling fluid and its preparation method. Background technique [0002] In the process of oil drilling, when drilling low-pressure oil and gas layers, water-sensitive formations and formations that are prone to leakage and collapse, it is necessary to use foam drilling fluid to prevent leakage and collapse. Foaming agent is the key to foam drilling fluid. At present, foaming agents commonly used in foam drilling fluid include sodium alkylbenzene sulfonate, C 12-20 Alkyl sulfonates and alpha-olefin sulfonates. Because these foaming agents contain a large amount of sulfonic acid groups, they are easy to cause environmental pollution to soil and water quality when used. At the same time, hydrogen sulfide gas will be decomposed under high temperature and high pressure, resulting in hydrogen embrittlement fracture of drilling tools. It will affect human h...

AI Technical Summary

Problems solved by technology

Because these foaming agents contain a large amount of sulfonic acid groups, they are easy to cause environmental pollution to soil and water quality when used. At the same time, hydrogen sulfide gas will be decomposed under high temperature and high pressure, resulting in hydrogen embrittlement fracture of drilling tools. affect human health and pollute the environment