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A multi-station combined treatment system and method for oil field reinjection water

An oilfield water reinjection and combined treatment technology, applied in mining wastewater treatment, water/sewage treatment, heating water/sewage treatment, etc. The effects of inhibiting new precipitation and coalescence growth, stable water quality and simple process flow

Active Publication Date: 2022-07-15
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0007] The invention provides a multi-station joint treatment system and method for oilfield reinjection water, which solves the problem that the content of suspended solids and the median particle size do not meet the reinjection requirements

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  • A multi-station combined treatment system and method for oil field reinjection water
  • A multi-station combined treatment system and method for oil field reinjection water
  • A multi-station combined treatment system and method for oil field reinjection water

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Embodiment Construction

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Please refer to figure 1 , figure 2 and image 3 ,in, figure 1 It is a schematic structural diagram of a preferred embodiment of the multi-station combined treatment system for oil field re-injection water provided by the present invention; figure 2 A schematic structural diagram of the heating furnace provided by the present invention; image 3 for figure 2 A structural cross-sectional view of the heating structure shown. The oilfield reinjection water multi-station combined treatment system and method include:

[0034] Back-injection water heating device 1, back-injection water heating bypass device 2, water-injection station back-injection water return device 3, back-injection water return-transport bypass device 4, back-injection water injection into formation device 5, combined station 6 and water injection station 7;

[0035] One si...

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Abstract

The invention provides a multi-station combined treatment system and method for oil field re-injection water. The oilfield re-injection water multi-station combined treatment system and method include: re-injection water heating device, re-injection water heating bypass device, re-injection water return device in water injection station, re-injection water return-transport bypass device, re-injection water injection into formation device, combined station and water injection station; one side of the back injection water heating device is connected with the combined station. The oilfield reinjection water multi-station combined treatment system and method provided by the present invention suppresses the new precipitation and aggregation growth of solid suspended solids by increasing the conveying temperature and flow rate of the reinjection water from the combined station to the water injection station, thereby realizing the solid state at the wellhead of the water injection well. The content of suspended solids and the median particle size meet the target of reinjection requirements; the adjustment of the flow rate and temperature of the reinjection water to the outside world is further realized, which solves the problem that the water quality of the oilfield reinjection wellhead does not meet the standard. The characteristics of physical stability.

Description

technical field [0001] The invention relates to the field of oilfield reinjection water treatment, in particular to a multi-station joint treatment system and method for oilfield reinjection water. Background technique [0002] Water flooding is an oilfield development scheme that is often used in oilfields. According to OPEC statistics, the current daily oil consumption in the world is about 89.4×10 6 barrels per day, while the water content of oilfields generally exceeds 75%, and some old oilfields even exceed 95%; in China, according to the statistics of Academician Han Dakuang of PetroChina and Academician Li Yang of Sinopec, my country's crude oil production has exceeded 1.9×10 8 ton / year, among which the reserves and production of water injection oilfields account for more than 80% of the country, the average water content of oilfields has exceeded 86.0%, and the water content of some old oilfields has exceeded 90%. Therefore, in the process of oilfield development, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/20C02F103/10
CPCC02F1/02C02F1/00C02F2103/10
Inventor 李桂亮李长俊班久庆韦南陈玉麟
Owner SOUTHWEST PETROLEUM UNIV
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