Treatment method for water quality up to standard reuse after oilfield drilling and measures waste liquid treatment
A technology of waste liquid treatment and treatment method, which is applied in mining wastewater treatment, chemical instruments and methods, multi-stage water/sewage treatment, etc. Wide range of liquid types, easy to mix and reuse, and high ion removal efficiency
Active Publication Date: 2017-10-10
SHANDONG HYGIYA ENVIRONMENTAL PROTECTION EQUIP
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
After the implementation of the new environmental protection law in 2015, it is forbidden to discharge drilling waste liquid and measure waste liquid to the ground, causing oil field drilling and oil-water gas well measures to stop production, affecting the normal progress of oil field development. In order to ensure the normal progress of oil field development, oil field Most of the wellsite vehicles are recycled and transported to the oilfield sewage treatment station for treatment. First, the method has high freight costs and poor oilfield development benefits. Second, because the recovered waste liquid is difficult to handle, the original treatment system is messed up, and the original sewage treatment station that meets the standard is treated. The subsequent water quality cannot meet the standard
[0003] In order to solve this problem, oilfield workers have carried out a series of research work. In order to achieve the water quality standard reuse after waste liquid treatment and save clean water resources, ultrafiltration and reverse osmosis technologies are used for treatment. This method has a large number of pretreatment equipment. Large volume, large floor area, many types of dosing, various equipment cleaning and regeneration, difficult transportation, high cost, and inconvenient on-site mobile use have not been solved
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0023] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.
[0024] Such as figure 1 , figure 2 As shown, the oilfield drilling and measures waste liquid treatment system, the treatment method for using the system to reuse the oilfield drilling and measures waste liquid after the water quality reaches the standard, includes the following steps:
[0025] (1) Firstly start the primary lift pump 19 to inject tangentially the drilling waste liquid or the measure waste liquid into 1 # Coagulation air flotation settling tank 1, 2 # Coagulation air flotation settling tank 2, 3 # Coagulation air flotation settling tank 3, 4 # In the coagulation air flotation settlement tank 4, the waste liquid generates vortex rotation in the tank during injection;
[0026] (2) Start 1 # Dosing device 10 respectively to 1 # Coagulation air flotation settling tank 1, 2 # Coagulation air flotation settling tank 2, 3 # C...
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
Login to View More Abstract
The invention discloses a treatment method for the water quality of waste liquid from drilling and measures in oilfields to be reused after treatment. The drilling waste fluid or waste liquid from measures is tangentially injected into a coagulation air flotation sedimentation tank to generate eddy current rotation, and at the same time, alkali is added to adjust the pH value. To ≥9; after the tank is full, carry out air flotation to remove oil, start the agitator to stir after the oil is collected, and add alkali-soluble adsorbent to the waste liquid until it is saturated; The pH value is adjusted to 6.5 to 7.5; after the pH value is adjusted to the requirement, a coagulant aid is added to the waste liquid to accelerate the sedimentation, the effluent from the pool is then separated into the oil-sludge water separation device, and the separated effluent is filtered and purified by the fine filtration device; after purification The water is then fed into the electrochemical device for anti-scaling, sterilization, corrosion inhibition, and deoxygenation treatment. This method has good gel breaking effect, high ion removal rate, fast sedimentation and separation, and high purity of water after treatment. It can be widely used in oil field drilling. and measures to treat the waste liquid after the water quality reaches the standard and reuse it.
Description
technical field [0001] The invention relates to a treatment method for reuse of oilfield drilling and waste fluid after treatment, in particular to a treatment method for water quality reuse after treatment of oilfield guar gum fracturing flowback fluid and drilling waste mud. Background technique [0002] The waste liquid produced by oil field drilling, oil well, water injection well, and gas well measures has complex components, contains a large amount of toxic chemicals and heavy metals, and is difficult to process and reuse. Usually, the waste liquid is discharged into the pool by digging a pond at the well site, and then lime is added. After air drying, bury it on the spot. After the implementation of the new environmental protection law in 2015, it is forbidden to discharge drilling waste liquid and measure waste liquid to the ground, causing oil field drilling and oil-water gas well measures to stop production, affecting the normal progress of oil field development. I...
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
Login to View More Patent Type & AuthorityPatents(China)
IPC IPC(8): C02F9/06C02F101/20C02F103/10
Inventor张后继魏丽萍沈利马奇奇韩立芹刘宝徐红雨邵明明宋丙春张瑾
OwnerSHANDONG HYGIYA ENVIRONMENTAL PROTECTION EQUIP