Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir

An endogenous microorganism and oil reservoir technology, applied in the field of enhanced oil recovery, can solve the problems of inconspicuous oil displacement effect and waste of chemicals, and achieve the effects of non-toxic and harmless compatibility, avoiding waste of nutrients, and low cost

Active Publication Date: 2013-01-02
E TECH ENERGY TECH DEV CORP
View PDF5 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional and common microbial oil recovery method is to inject the activator into the oil reservoir according to the amount designed for the process. The problem is that the activated microorganisms have a certain blindness,

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir
  • Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir
  • Method for directionally regulating and controlling indigenous microbial flooding of oil reservoir

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] See attached figure 1 . To select a block in the oilfield as a block suitable for microbial flooding, the basic conditions are as follows:

[0031] Block overview

[0032] temperature (°C)

Permeability (10 -3 μm 2 )

Porosity(%)

Injection and production method

Recovery degree (%)

Comprehensive water content (%)

60

1300

30-35

One Note Five Picks

10.0

65

[0033] Analyze the oil-water properties of this block:

[0034] Degassed Crude Oil Physical Properties Data Sheet

[0035]

[0036] Water Analysis Data Sheet

[0037]

[0038] The method for directional regulation and control of oil reservoir endogenous microorganism flooding comprises the following steps:

[0039] 1. Activation of hydrocarbon oxidizing bacteria near wellbore: Inject an aerobic system activator into near wellbore to directional activate aerobic hydrocarbon oxidizing bacteria near wellbore;

[0040] 2. Activation of ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for directionally regulating and controlling indigenous microbial flooding of an oil reservoir and belongs to the technical field of improvement on crude oil recovery rate. The method for directionally regulating and controlling the indigenous microbial flooding of the oil reservoir is characterized by comprising the following steps of: firstly, activating hydrocarbon oxidizing bacteria of a near wellbore zone; injecting an aerobic system activation agent into the near wellbore zone; directionally activating the hydrocarbon oxidizing bacteria of the near wellbore zone; and secondly, activating anaerobic fermentation bacteria at the deep part of the oil reservoir, injecting an anaerobic system activation agent into the deep part of the oil reservoir, directionally activating the anaerobic fermentation bacteria, activating methanogen to generate gas by using metabolite of the anaerobic fermentation bacteria and improving the crude oil recovery rate through beneficial metabolic products of microorganism. The method disclosed by the invention has the advantages of simple process, directional activation, convenience in operation, low cost, economy, practicability, no toxicity, no harm, no nutrient waste, wide application range, facilitation for large-scale application of a mine filed and the like.

Description

technical field [0001] The invention belongs to the technical field of enhanced crude oil recovery, and in particular relates to a method for directional regulation and control of oil reservoir endogenous microorganism flooding. Background technique [0002] Microbial flooding technology belongs to the tertiary oil recovery technology, which refers to a method to activate the endogenous microorganisms in the oil reservoir, and improve the fluidity of crude oil and the purpose of enhancing the oil recovery by increasing the number of oil recovery functional microorganisms and the concentration of their metabolites. [0003] The microorganisms in the oil reservoir are a huge system and a relatively stable microbial community. Some of them enter the oil layer with the injected water during the development of the oil field, and some already exist during the formation of the reservoir. Some microorganisms are active, while others are dormant. Among them, microorganisms with oil...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): E21B43/22C09K8/582C12N1/00
Inventor 胡欣
Owner E TECH ENERGY TECH DEV CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap