Drilling wastewater treatment device and method

A technology for drilling wastewater and treatment devices, applied in mining wastewater treatment, water/sewage treatment, chemical instruments and methods, etc.

Active Publication Date: 2020-10-27
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention aims at the reduction of drilling wastewater and the classification and graded removal of pollutants, and forms a combined technology for reuse and treatment of drilling wastewater to achieve maximum reuse and reinjection of remaining sewage

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
  • Drilling wastewater treatment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.

[0041] From August to October 2017, the combined process of the present invention was used to complete the application research on the reuse and treatment of drilling wastewater in an oil and gas development enterprise. The processing flow of the device is as follows figure 1 Shown:

[0042] 1. First, use the lifting device to lift the drilling wastewater to the electrocoagulation reaction tank 100. The electrodes are iron electrodes, and the inside of the tank body is set as an electrolysis reaction zone 101 and a flocculation sedimentation zone 102. Drilling waste water passes through the electrolysis reaction zone 10...

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 drilling wastewater treatment device and method. The drilling wastewater treatment device comprises an electric flocculation reaction tank, an electric oxidation reaction tank and an inclined plate sedimentation tank which are sequentially communicated. Aiming at the water quality characteristics of high hardness, high suspended solids and more oily organic pollutants ofthe drilling waste liquid, an electric flocculation-electric oxidation combined process is adopted to efficiently remove main pollutants such as hardness ions, suspended solids, organic matters, sulfate reducing bacteria and the like. According to the method, by utilizing a reaction mechanism of relatively high chlorine radicals and electrooxidation of the drilling wastewater, the electrochemicalreaction efficiency and the sterilization effect are guaranteed under the condition of not adding extra chemicals, the treatment cost of the drilling wastewater is effectively reduced, and the operation safety is effectively improved.

Description

technical field [0001] The invention belongs to the field of industrial wastewater treatment, and in particular relates to a drilling wastewater treatment device and method. Background technique [0002] As an important unconventional energy source, shale gas will bring huge pressure on environmental protection during the process of horizontal drilling, hydraulic fracturing, fracturing fluid flowback, and test production. The water used in the drilling process is mainly used for preparing mud and flushing equipment, etc. The water consumption for single well drilling is 1500-2000m 3 . The shale gas drilling wastewater is mainly produced in the water-based drilling process, accompanied by formation produced water, wellbore cleaning wastewater, drilling platform flushing wastewater, mud tank cleaning wastewater, etc. The displacement of a single well is about 450-600m 3 . The waste has complex components, high COD, high chroma, high salt content, poor biodegradability, dif...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/10
CPCC02F1/463C02F1/4672C02F2103/10
Inventor 罗臻张晓飞张华王毅霖刘译阳
Owner BC P INC CHINA NAT PETROLEUM 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