Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Microbe harmless treatment method for oil-gas field waste slurry

A technology for harmless treatment of waste mud, applied in the direction of microorganism-based methods, biochemical equipment and methods, biological sludge treatment, etc., can solve the environmental pollution caused by waste mud, and achieve the goal of reducing hazards and high degradation efficiency Effect

Active Publication Date: 2008-05-21
西安紫瑞生物科技有限公司
View PDF0 Cites 39 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problem of serious environmental pollution caused by waste mud discharged from drilling in oil and gas fields, and provides a new, low-cost, and high-efficiency new way of bioremediation of polluted soil and restoration of ecological environment for the energy mining industry

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment I

[0047] In the newly abandoned mud pool, 200 tons of fresh waste mud discharged from oil and gas field drilling are treated. The water content of the waste mud is 60-70%, the pH value is 9-13, and the physical state is colloidal. Its main components are bentonite ≤ 4%, polyacrylonitrile sodium or calcium, ammonium ≤ 1-2%, SMP (sulfonated phenolic resin) 3-5%, sulfonated pitch 3-5%, SMC (sulfonated lignite) 3 -5% or PSC (lignite resin) 3-5%, zwitterionic polymer viscosity reducer XY-27 1.0-1.2%, SMT (sulfonated tannin) 3-5%, FRH (lubricant) 3-5%, CaCO 3 2%, (more than 2500 mesh) and other components. In the leaching solution, aluminum>3mg / L, total chromium>10mg / L, and hexavalent chromium>1.5mg / L.

[0048] Aspergillus oryzae, Bacillus subtilis, Pseudomonas fluorescens, Acinetobacter calcoaceticus and Rhodococcus erythropolis were successively cultured in test tubes and shake flasks respectively. Cultivation, seed tank culture, the bacterial suspension cultured in the seed tank...

Embodiment II

[0058] In the mud pool that has been abandoned for many years, 200 tons of waste mud that has been placed for several years after being discharged from oil and gas field drilling are treated. The water content of the waste mud is 3 2% (more than 2500 mesh) and other components. In the leaching solution, aluminum>3mg / L, total chromium>10mg / L, and hexavalent chromium>1.5mg / L.

[0059] Aspergillus oryzae, Bacillus subtilis, Pseudomonas fluorescens, Acinetobacter calcoaceticus and Rhodococcus erythropolis were successively cultured in test tubes and shake flasks respectively. Cultivation, seed tank culture, the bacterial suspension cultured in the seed tank is inoculated according to the ratio of 5-10% (volume percentage), respectively connected to the fermenter liquid culture, the culture temperature is 25-35 ° C, and the culture time is 24-72 hours , microscopic examination of the bacteria suspension in the fermenter respectively, and the number of viable bacteria was ≥10 9 Ind...

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 the technical field of harmless treatment of polluted soil microorganisms. In particular, it relates to a microbial harmless treatment method for oil and gas field drilling waste mud. Aspergillus oryzae, Bacillus subtilis, Pseudomonas fluorescens, Acinetobacter calcoacetate and Rhodococcus erythrococcus are respectively cultured in test tubes, shake flasks, Seed tank culture, fermenter culture, and sterilized solid medium culture become solid bacterial agents for production, which are mixed in proportion to solid mixed bacterial agents for production, and the bacterial agents are connected to oil and gas fields to discharge waste mud during drilling, and after uniform stirring, Control the cultivation temperature and time of the microbial harmless treatment of mud, and the above treatment process can be carried out in the abandoned mud pool for drilling in oil and gas fields. Through the growth, reproduction, degradation and transformation of microorganisms in waste mud, the mud can be detoxified, degummed, desalinated and dehydrated, so that the polluted soil environment can be biorestored and the ecological environment can be restored.

Description

technical field [0001] The invention relates to the technical field of harmless treatment of polluted soil microorganisms. Specifically, the present invention relates to a microbial harmless treatment method for oil and gas field drilling waste mud. Aiming at the harmful components in the waste mud discharged from oil and gas field drilling, the microbial composite flora with high-efficiency degradation and transformation ability is selected and used. Through complex biological and chemical processes, the harmful components in the waste mud that are harmful to the ecological environment are efficiently degraded and transformed to detoxify, degumming, desalination, and dehydration to achieve the purpose of microbial harmless treatment. The contaminated soil environment after oil and gas field drilling is biorestored, and the ecological environment is restored. Background technique [0002] The waste mud discharged during oil and gas field drilling contains potassium dichroma...

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): C02F11/02C12N1/14C12N1/20C12R1/125C12R1/69C12R1/39
Inventor 陈五岭
Owner 西安紫瑞生物科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com