Vehicular flushing liquid closed cycle dirty oil and water treatment system for water injection well

A closed-circuit circulation and treatment system technology, applied in the direction of sterilization/microdynamic water/sewage treatment, etc., can solve the problems of substandard water quality of well cleaning fluid, low work efficiency, and inability to continuously circulate well for cleaning, and reduce well cleaning operations. Cost, reduce labor intensity, compact structure

Active Publication Date: 2009-12-23
DAQING OILFIELD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of the existing water injection well cleaning operations such as low working efficiency, inability to continuously circulate the well cleaning, and the water quality of the well cleaning fluid not up to the standard, the present invention further provides a vehicle-mounted water injection well cleaning fluid closed-circuit circulation sewage oil and water treatment system

Method used

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  • Vehicular flushing liquid closed cycle dirty oil and water treatment system for water injection well
  • Vehicular flushing liquid closed cycle dirty oil and water treatment system for water injection well
  • Vehicular flushing liquid closed cycle dirty oil and water treatment system for water injection well

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specific Embodiment approach 1

[0007] Specific implementation mode one: as figure 1 , figure 2 , Figure 4 As shown, the vehicle-mounted water injection well flushing fluid closed-circuit circulating dirty oil and water treatment system of the present embodiment comprises a car body 16, a dirty oil tank 5, a circulation pump 9, a shunt 15, a water turbine 18, a well flushing fluid return circulation pipe 21, Water injection pipe 22, well flushing fluid return pipe 23, sewage pipe 24, non-powered oil-water separator 7, drip dosing device 34, and fine filter device 2; well flushing fluid return circulation pipe 21 communicates with water turbine 18, and the outlet of water turbine 18 passes through The flow divider 15 communicates with the drip dosing device 34, the well flushing fluid return circulation pipe 21 communicates with the unpowered oil-water separator 7, the dirty oil tank 5 communicates with the unpowered oil-water separator 7 through the sewage pipe 24, and the unpowered oil-water separator 7 ...

specific Embodiment approach 2

[0008] Specific implementation mode two: as figure 2 , image 3 As shown, the non-powered oil-water separator 7 described in this embodiment consists of an oil drainer 6, a shower 17, an air flotation device 10, a flow stabilization plate 11, a separation layer 12, a partition 13, a screw propeller 19 and The shell 25 is composed of the oil drainer 6 fixed on the left upper end of the shell 25, the sprayer 17 is arranged on the left upper part of the shell 25, the sprayer 17 is connected with the outlet of the water turbine 18, and the air flotation device 10 is arranged on the sprayer. Below the shower 17, the air flotation device 10 is provided with a stabilizing plate 11, the housing 25 on the right side of the stabilizing plate 11 is provided with a separation layer 12, and the screw propeller 19 is fixed on the lower right side of the oil drainer 6 On the housing 25, the housing 25 on the right side of the separation layer 12 is provided with a partition 13. With such ...

specific Embodiment approach 3

[0009] Specific implementation mode three: figure 2 As shown, the bottom of the side of the casing 25 in this embodiment is provided with a screw drainer 27 and a drain hole 20 . With such a structure, the dirt separated by sedimentation can be effectively discharged. Other components and connections are the same as those in the first embodiment.

[0010] Specific implementation mode four: as figure 2 As shown, the air flotation device 10 in this embodiment is a horizontal serpentine tube with holes. With such a structure, the suspended solids can rise and separate. Other components and connections are the same as those in the first embodiment.

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Abstract

The utility model relates to a vehicle-mounted water injection well flushing fluid closed circuit sewage oil water treatment system, which relates to a treatment system for oilfield water injection well flushing fluid. The invention effectively solves the problems of low working efficiency of the well washing operation of the water injection well, inability to continuously circulate the well washing, and the water quality of the well washing not up to the standard. The well flushing fluid return circulation pipe (21) is connected with the water turbine (18), the outlet of the water turbine (18) is connected with the drip dosing device (34) through the flow divider (15), and the well flushing fluid return circulation pipe (21) is connected with the unpowered oil-water The separator (7) is connected, the dirty oil tank (5) is connected with the unpowered oil-water separator (7) through the sewage pipe (24), and the treatment liquid outlet (14) of the unpowered oil-water separator (7) is connected with the circulation pump (9) connected, the circulation pump (9) communicates with the water inlet (31) of the fine filter device (2) through the well flushing fluid return pipe (23), and the water outlet (33) of the fine filter device (2) communicates with the water injection pipe (22) . The invention has the advantages of convenient operation and water resource saving in the well washing process.

Description

technical field [0001] The invention relates to a treatment system for well flushing fluid of water injection wells in oil fields. Background technique [0002] After the water injection well has been injected for a period of time, due to the accumulation of suspended solids and mechanical impurities in the water near the wellbore and the blast hole, the water absorption capacity of the formation will decrease and the water injection pressure will increase. Well flushing of water injection wells in oil fields can remove pollution in the wellbore and near wellbore formations. It is an effective and economical method for water injection wells to maintain the water absorption capacity of formations, and it is one of the important measures to improve water injection effects and reduce oil layer pollution. At present, the commonly used treatment methods for flushing sewage from water injection wells are mainly to discharge them outside or use tank trucks to transport them for cen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/50
Inventor 刘洪军曹鼎洪樊英许万利
Owner DAQING OILFIELD CO LTD
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