Multicomponent biological compound oil displacement agent system and injection technology thereof
A composite oil displacement agent and biopolymer technology, which is applied in the direction of production fluid, drilling composition, wellbore/well parts, etc., can solve the problems of large amount of surfactant, difficult degradation of polymer, and difficult sewage treatment , to achieve the effect of increasing swept volume, improving recovery and low cost
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[0037] Example 1
[0038] The multi-element biological composite oil-displacing agent system of the present invention is composed of a petroleum hydrocarbon degrading bacteria agent and a biological composite oil-displacing agent.
[0039] The said petroleum hydrocarbon degrading bacteria agent is prepared by uniformly mixing 1 part of petroleum hydrocarbon degrading bacteria fermentation stock solution and 15 parts of nutrient solution;
[0040] The biological composite oil-displacing agent is composed of the following components in a weight ratio: 5 parts of biopolymer bacteria fermentation stock solution, 10 parts of biolipeptide surfactant, 1 part of betaine, 60 to 80 parts of water, pH control 8, system Viscosity 47mpa·s;
[0041] The nutrient solution is a mixture of corn syrup and sucrose in a mass ratio of 0.5 parts, 0.1 parts diammonium phosphate, 0.1 parts sodium nitrate, 0.02 parts humic acid potassium salt, and 60 parts water in a 3:1 mass ratio;
[0042] The above are part...
Example Embodiment
[0063] Example 2
[0064] The multi-element biological composite oil-displacing agent system of the present invention is composed of a petroleum hydrocarbon degrading bacteria agent and a biological composite oil-displacing agent.
[0065] The said petroleum hydrocarbon degrading bacteria agent is prepared by uniformly mixing 5 parts of petroleum hydrocarbon degrading bacteria fermentation stock solution and 20 parts of nutrient solution;
[0066] The biological composite oil-displacing agent is composed of the following components in a weight ratio: 10 parts of biopolymer bacteria fermentation stock solution, 20 parts of biolipeptide surfactant, 5 parts of betaine, 60 to 80 parts of water, pH control 9, system Viscosity 78mpa·s;
[0067] The nutrient solution is a mixture of 5 parts of corn syrup and sucrose in a mass ratio of 3:1, 0.5 parts of diammonium phosphate, 0.5 parts of sodium nitrate, 0.05 parts of potassium humate, and 80 parts of water;
[0068] The above are parts by mass...
Example Embodiment
[0089] Example 3
[0090] The multi-element biological composite oil-displacing agent system of the present invention is composed of a petroleum hydrocarbon degrading bacteria agent and a biological composite oil-displacing agent.
[0091] The said petroleum hydrocarbon degrading bacteria agent is prepared by uniformly mixing 3 parts of petroleum hydrocarbon degrading bacteria fermentation stock solution and 18 parts of nutrient solution;
[0092] The biological composite oil-displacing agent is composed of the following components in a weight ratio: 8 parts of biopolymer bacteria fermentation stock solution, 15 parts of biolipeptide surfactant, 3 parts of betaine, 60 to 80 parts of water, pH 8.5 controlled , System viscosity 65mpa·s;
[0093] The nutrient solution is a mixture of 3 parts of corn syrup and sucrose in a mass ratio of 3:1, 0.3 parts of diammonium phosphate, 0.3 parts of sodium nitrate, 0.05 parts of potassium humate, and 70 parts of water;
[0094] The above are parts by...
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