Output Of Low-permeability Oil Fields To Improve Water Treatment Technology Research

The project is in close connection with the actual proposed oil field, oil recovery related to changes in fluid understanding, gathering and transportation system, compatibility agents, technical and operational issues such as rationality. Technical service contracts in accordance with the contents of the project requirements, through theoretical research, indoor test and field test studies have found non-standard treatment recovery of the main reasons put forward the technical direction of the next step.Oilfield in the understanding of fluid, we clearly see the"black water"in the joint exhibition traces of oil-water system, after detection of sulfide in the 10-20 mg / L between the bactericidal effect in the case of poor can give rise to any potential corrosion; also show that the system of pipes, containers are also some corrosion problems. The appearance of corrosion products affect not only the efficacy oilfield chemicals and crude oil and sewage can cause long-term water quality standards do not run, or even plug the oil, the impact of oil recovery.The plans to study another important element is the answer to on-site targeted agents currently in use and efficiency of high or low. Pharmacy is the chemical structure and compatibility test. Interior study, take the Pharmacy 1,2,3,4,5 mL, at 20℃room temperature to 300 times the biological microscope or the naked eye when mixed with different pharmaceutical properties of the ratio change. The test carried out 7 Pharmacy 145 Group 725 observation points, which lasted four months. The results shown in Table 11:7 in the anti-scaling inhibitor insecticides, fungicides better compatibility, the proportion of other agents with special odor generated close to the time, especially oil and water separation agent and the inorganic flocculant suspensions exposure can produce white, indicating emergence of new material or change the original properties of pharmaceutical, oil and water separation agent, filter cleaning agent to continue to improve performance space.Technology Dosing set point will also affect the rationality of the effect of oil-water separation-related indicators, such as the role of sulfide into the problem of inadequate doses; Flocculent Dosing should be moved forward; and to ensure pool backwash water recovery normal dredging. Increase the physical and chemical sulfate-reducing bacteria on the implementation of efforts to kill.Dosing Dosing process set point will also affect the rationality of the related oil and water separation index, such as sulfides Agents for the problem of insufficient; flocculant dosing point should be moved forward; and ensure that anti-rinse water recovery tank clean the normal silt. Increase the physical and chemical methods on sulfate-reducing bacteria to kill the intensity.Observational data show that the field test: filter can import and export of waste water containing oil, a filter tank before dressing the export of oil 11.2mg / L, SS 16.4mg / L; secondary filter can export oil 5.7mg / L; SS 11.3mg / L. Changed to improve the Pharmacy, the first export of oil tank filter down to 7.2mg / L, suspended solids down to 9.7mg / L; secondary filter can export oil to 4.5 mg / L; suspended matter 6.1mg / L. Overall decline is the decline in oil 1.2 mg / L, suspensions dropped 5.2mg / L. The new test preparation of filter cleaning agent during the sample from the Daqing Oilfield Design and Research Institute, and the results show: Song 2 of 5 # of Sewage secondary filter can export oil to 2.10 mg / L; SS was 2.89 mg / L; small 2μm particle size in the proportion reached 85%, should be said that tests at the scene cleaning filter made initial success.