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Method for increasing production by compounding microorganism and biologically active agent

A bioactive agent and microbial technology, which is applied in earth-moving drilling, production of fluids, wellbore/well components, etc., can solve the problems of slow production effect and general microbial oil recovery effect, so as to improve the effect, improve crude oil recovery, Use safe effects

Active Publication Date: 2013-03-27
DONGYING SHENGSHI PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Microbial enhanced oil recovery technology has produced good results in increasing production and efficiency, but there are still some limitations in specific operations: 1. Because bacteria multiply requires a process, the effect is relatively slow; 2. For relatively thick crude oil to remove plugs, The general effect of microbial oil recovery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment includes the following steps:

[0027] 1. First configure the microbial blockage-removing oil-displacing bacterial agent. The microbial plugging-removing oil-displacing bacterial agent is the plugging-removing oil-displacing bacterial agent. The formula includes nutrient agents accounting for 1% of the total weight, and the balance is water and microbial live bacteria. Bacteria is 10 9 cfu / mL, the living microorganisms are aerobic and facultative anaerobic bacteria, and the nutrient contains 500ppm of yeast extract, NH 4 Cl100ppm and K 2 HPO 4 300ppm;

[0028] 2. Configure the bioactive agent. The formula is composed of: 15% rhamnolipid, 30% trehalolipid, 15% alkyl glycoside, and the balance is water;

[0029] 3. Make the microbial plug-removing and oil-displacing bacterial agent prepared in step 1 into a 0.5% aqueous solution, and the bioactive agent prepared in step 2 is also prepared into a 0.5% aqueous solution, and prepare the prepared microbial...

Embodiment 2

[0032] This embodiment includes the following steps:

[0033] 1. First configure the microbial blockage-removing oil-displacing bacterial agent. The microbial plugging-removing oil-displacing bacterial agent is the plugging-removing oil-displacing bacterial agent. The formula includes nutrient agents accounting for 5% of the total weight, and the balance is water and microbial live bacteria. Bacteria is 10 7 cfu / mL, the living microorganisms are aerobic bacteria, and the nutrient contains 50ppm yeast extract, 400ppm peptone, NH 4 Cl300ppm and K 2 HPO 4 200ppm;

[0034] 2. Configure the bioactive agent. The formula is composed of: 20% rhamnolipid, 25% trehalolipid, 10% alkyl glycoside, and the balance is water;

[0035] 3. Make the microbial plug-removing oil-displacing bacterial agent prepared in step 1 into a 2% aqueous solution, and the bioactive agent prepared in step 2 into a 2% aqueous solution, and prepare the prepared microbial plug-removing oil-displacing agent Th...

Embodiment 3

[0038] This embodiment includes the following steps:

[0039] 1. First configure the microbial plugging-removing and oil-displacing bacterial agent. The microbial plugging-removing and oil-displacing bacterial agent is the plugging-removing and oil-displacing bacterial agent. Bacteria is 10 8 cfu / mL, the microbial live bacteria are facultative anaerobic bacteria, and the nutritional agent contains yeast extract 300ppm, peptone 200ppm, NH 4 Cl600ppm and K 2 HPO 4 50ppm;

[0040] 2. Configure the bioactive agent. The formula is composed of: 25% rhamnolipid, 20% trehalolipid, 20% alkyl glycoside and the balance is water.

[0041]3. Make the microbial plug-removing oil-displacing bacterial agent prepared in step 1 into a 1% aqueous solution, and the bioactive agent prepared in step 2 also into a 1% aqueous solution, and prepare the prepared microbial plug-removing oil-displacing agent The aqueous solution of the bacterial agent and the aqueous solution of the bioactive agent ...

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Abstract

The invention discloses a method for increasing production by compounding a microorganism and a biologically active agent, which comprises the following steps of: injecting prepared aqueous solution of a microorganism blockage-removing oil-displacing bacterial agent and aqueous solution of the biologically active agent into an oil layer in a continuous injection mode or a compounding mode in a ratio of 1:1 or 1:2; and closing a well for 7 to 15 days and then exploiting the well. In the method, the microorganism and the biologically active agent are matched with each other, so that the aim of effect superposition is fulfilled and the petroleum recovery ratio is enhanced.

Description

technical field [0001] The invention relates to the technical field of oil recovery methods, in particular to a compound production increase method of microorganisms and bioactive agents. Background technique [0002] Microbial Enhanced Oil Recovery (MEOR) is an important part of the four key technologies for enhanced oil recovery (chemical, thermal, gas flooding, and microorganisms), and its research began in the 1920s. The method of microbial enhanced oil recovery refers to Inject the microbial solution and nutrient solution isolated and cultivated on the ground into the oil layer, or simply inject the nutrient solution to activate the microorganisms in the oil layer, make them grow and reproduce in the oil layer, and produce metabolites that are beneficial to improve the recovery rate. By screening the characteristics of the bacteria, Function, function and adaptability, change the nature of crude oil and reservoir environment. Its main mechanism is to use microorganisms...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/22
Inventor 陈军斌屈展王俊奇盖海防张振杰
Owner DONGYING SHENGSHI PETROLEUM TECH CO LTD
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