Treatment process for drilling waste sludge in oil and gas field

A waste mud and treatment process technology, which is applied in biological sludge treatment, mining wastewater treatment, etc., can solve the problems of complex operation, high cost, secondary pollution, etc., and achieve simple process steps, no secondary pollution, and prevent direct erosion Effect

Active Publication Date: 2013-12-11
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD +1
View PDF6 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to address the defects and deficiencies in the above-mentioned prior art, and to provide a treatment process for oil and gas field drilling waste mud, which effectively solves the problems of secondary

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 1

[0035] As a preferred embodiment of the present invention, its processing steps are:

[0036] a. Microbial degrading bacteria are cultivated and domesticated to obtain degrading bacteria;

[0037] b. Mix the waste drilling mud with the degrading bacteria obtained in step a at a ratio of 100:0.3 by weight;

[0038] c. Mix the mixture obtained in step b with the soil at a ratio of 1:1.5 in proportion by weight;

[0039] D, the surface covering soil of the mixture formed in c step;

[0040] e, planting plants on the soil of step d.

Embodiment 2

[0042] As the best implementation mode of the present invention, its steps are:

[0043] a. The cultivation and domestication of microbial degrading bacteria is to use the solid waste produced in the drilling operation to separate and domesticate the strains, separate and domesticate Gram-positive cocci with good degradability and applicability, and then make them into solid microbial strains (for transportation );

[0044] b. Mixing of strains and waste drilling mud: mix the strains obtained in step a with waste drilling mud in a ratio of 0.4:100 by weight. It can be mixed in the slag mud pool of the original drilling operation or evenly mixed in the nearby excavated landfill disposal pool. If the slag mud pool is very deep (the depth of the drilling operation slag mud pool built in Sichuan Oil and Gas Field is 3.5-4 meters, it can be solidified first. - 2.5 meters bottom part of the pool, and the 1.0-1.5 meters depth of the upper part of the sludge tank will be treated biol...

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 discloses a treatment process for drilling waste sludge in oil and gas field, relating to the technical field of pollution treatment of petroleum and gas exploration drilling. The treatment process comprises the following steps of a. culturing and domesticating microbial degradation bacteria to obtain degradation strains; b. mixing the drilling waste sludge and the degradation strain obtained in the step a according to a proportion of 100:(0.3-0.5) in parts by weight; c. mixing the mixture obtained in the step b with soil according to a proportion of 1:(1.5-3) in parts by weight; d. covering the surface layer of the mixture formed in the step c with soil; e. cultivating plants in the soil of the step d. By using the method, the problems of secondary pollution, high cost and complex operation existing in the conventional treatment technology are effectively solved, and the treated mixture meets the national soil quality three-level standard after the drilling waste sludge plant-soil-microorganism are subjected to innocent treatment together.

Description

[0001] technical field [0002] The invention relates to the technical field of oil and gas exploration and drilling pollution control, in particular to a process for treating waste mud used in drilling operations in oil and gas fields. Background technique [0003] Drilling waste mud is a multiple stable colloidal suspension system containing clay, weighted materials, various chemical mud treatment agents, a certain amount of dirty oil and drilling cuttings. The hydrocarbons, salts, various polymers, sulfonates, and certain metal ions contained in it are extremely harmful to the environment. If they are not treated, they will definitely cause serious pollution to the surrounding environment of oil and gas fields and groundwater. With the strengthening of people's awareness of environmental protection, the harm and impact of drilling waste mud on the environment has attracted much attention, and many countries have listed it as an important project of environmental prote...

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): C02F11/02C02F103/10
Inventor 陈立荣陈强范有余蒋学彬黄敏张敏李辉何天鹏
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD
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