Advanced treatment technology for oilfield reinjection water

A technology for reinjection and advanced treatment of oilfield water, which is applied in the field of water treatment, can solve the problems of reducing the discharge of wastewater per ton of crude oil production, and achieve the effect of improving removal efficiency and reducing wastewater discharge

Active Publication Date: 2016-02-17
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no mature advanced treatment process for oilfield reinjection water at home and abroad, so this patent proposes a systematic process for the advanced treatment of oilfield reinjection water, which realizes the green treatment of oil production wastewater and reduces the wastewater discharge per ton of crude oil produced

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The oil production wastewater was treated in a mining area in Xinjiang. The water quality of the oil production wastewater before treatment was: the oil content was 55 mg / L and the suspended matter was 45 mg / L. The treatment process is as follows: the wastewater passes through the first-stage water inlet pump, the filter inlet, the multi-media filter, the water distributor, the ceramsite filler area, the activated carbon filler area, the filter outlet, the backwash pump, the backwash water inlet, the reverse Flushing water outlet, intermediate pool, secondary water inlet pump, catalytic tower inlet, ozone catalytic tower, kaolin ozone catalyst, ozone generator, ozone pipeline and air inlet, ozone diffuser, ozone quencher and air outlet, catalytic tower Outlet, drain pump.

[0022] The main processing steps are divided into:

[0023] (1) Filtration area: The oilfield reinjection water to be treated enters the multi-media filter from the inlet of the filter through the first-...

Embodiment 2

[0033] The oil production wastewater was treated in a mining area in Xinjiang. The water quality of the oil production wastewater before treatment was: the oil content was 42 mg / L and the suspended solids was 38 mg / L. The treatment process is as follows: the wastewater passes through the first-stage water inlet pump, the filter inlet, the multi-media filter, the water distributor, the ceramsite filler area, the activated carbon filler area, the filter outlet, the backwash pump, the backwash water inlet, the reverse Flushing water outlet, intermediate pool, secondary water inlet pump, catalytic tower inlet, ozone catalytic tower, kaolin ozone catalyst, ozone generator, ozone pipeline and air inlet, ozone diffuser, ozone quencher and air outlet, catalytic tower Outlet, drain pump.

[0034] The main processing steps are divided into:

[0035] (1) Filtration area: the oilfield reinjection water to be treated enters the multi-media filter from the inlet of the filter through the first-...

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Abstract

The invention discloses an advanced treatment technology system for oilfield reinjection water. The advanced treatment technology system is characterized by comprising a first-stage water inlet pump, a filter water inlet, a multi-medium filter, a water distributor, a ceramic filler area, an activated carbon filler area, a filter water outlet, a backwashing pump, a backwashing water inlet, a backwashing water outlet, a middle pool, a second-stage water inlet pump, a catalysis tower water inlet, an ozone catalysis tower, a kaolin ozone catalyst, an ozone generator, an ozone pipeline, an ozone inlet, an ozone diffuser, an ozone quencher, an ozone outlet, a catalysis tower water outlet and a draining pump. According to the advanced treatment technology system, a technical scheme for advanced treatment of oil producing wastewater is presented, the problem that organic pollutants in the oilfield reinjection water exceed the standard is systematacially solved, and the oil producing wastewater treated by the system can meet the oilfield reinjection requirements; in addition, the treatment effect is stable, the production operation cost is low, and operation is easy and convenient.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an advanced treatment system for oilfield reinjection water. Background technique [0002] In the process of oilfield exploitation, especially in the middle and late stages of oilfield exploitation, the pressure of the oil layer gradually decreases with the prolongation of the production time. When the pressure of the oil layer drops below the saturation pressure of oil and gas, the natural gas dissolved in the oil A large amount of free oil will come out, the production of oil wells will decrease significantly, the oil-gas ratio will increase, and the properties of underground crude oil will change, resulting in increased viscosity and difficulty in flow, so that a large amount of degassed crude oil (also known as dead oil) remains in the formation and cannot be extracted. Reduce the production efficiency of oil fields. In order to maintain the reservoir pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/78C02F9/00C02F2101/32C02F2201/782C02F2201/784C02F2301/08
Inventor 何丹农董亚梅尹桂林童琴吴晓燕金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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