Method for harmless treatment of oil sludge sand
A technology for harmless treatment of oily sludge, applied in biological sludge treatment, chemical instruments and methods, water/sludge/sewage treatment, etc. and other problems, to achieve the effect of high input-output ratio, lower processing cost, and simple and convenient equipment installation.
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[0025] Example 1:
[0026] A joint station G of Shengli Oilfield 21 The properties of oil sludge sand are as follows: oil content is 15.3%, water content is 20.5%, average particle size is 80 μm, and Serratia bacteria concentration in oil sludge sand is 2.0×10 2 Pcs / ml, the bacterial concentration of Methanococcus 1.0×10 3 Pcs / ml, anaerobic desulfurization bacillus strain 1.0×10 3 Pcs / ml.
[0027] An abandoned oil reservoir in Shengli Oilfield L 35 , The reservoir temperature is 75℃, the permeability is 1200×10 -3 μm 2 , Formation water salinity 78525mg / L, crude oil viscosity 1256mPa·s, residual oil saturation 25.6%, recovery degree 35.3%.
[0028] Using the method of the present invention, the joint station G 21 Oil sludge sand is harmlessly treated and applied to abandoned oil reservoirs L 35 It is used to increase the oil production and gas production of abandoned oil reservoirs. The specific steps are as follows:
[0029] (1) Screening of oily mud sand
[0030] Union Station G 21 Th...
Example Embodiment
[0048] Example 2:
[0049] A joint station G of Shengli Oilfield 45 The properties of sludge sand are as follows: oil content is 17.2%, water content is 22.3%, average particle size is 50μm, and the bacterial concentration of Arthrobacter in the sludge sand is 1.0×10 3 Pcs / ml, the bacterial concentration of Methanosarcina 2.0×10 3 Pcs / ml, Acinetobacter bacteria concentration 2.0×10 2 Pcs / ml.
[0050] An abandoned oil reservoir AR in Shengli Oilfield 5 , The reservoir temperature is 70℃, the permeability is 1500×10 -3 μm 2 , Formation water salinity 12568mg / L, crude oil viscosity 2562mPa·s, residual oil saturation 27.2%, recovery degree 32.5%.
[0051] Using the method of the present invention, the joint station G 45 Oil mud sand is harmlessly treated and applied to abandoned oil reservoir AR 5 It is used to increase the oil production and gas production of abandoned oil reservoirs. The specific steps are as follows:
[0052] (1) Screening of oily mud sand
[0053] Union Station G 45 The...
Example Embodiment
[0072] Example 3:
[0073] A joint station D of Shengli Oilfield 5 The properties of sludge sand are as follows: oil content is 19.2%, water content is 22.3%, average particle size is 60μm, and the bacterial concentration of Sphingomonas in sludge sand is 2.0×10 2 Pcs / ml, Methanethermophilus bacteria concentration 2.0×10 3 Pcs / ml, anaerobic desulphurization bacillus strain 2.0×10 3 Pcs / ml.
[0074] An abandoned oil reservoir M in Shengli Oilfield 25 , The reservoir temperature is 82℃, the permeability is 500×10 -3 μm 2 , Formation water salinity 32567mg / L, crude oil viscosity 985mPa·s, residual oil saturation 21.3%, recovery degree 31.5%.
[0075] Using the method of the present invention, the joint station D 5 Oil sludge sand is harmlessly treated and applied to abandoned oil reservoirs M 25 It is used to increase the oil production and gas production of abandoned oil reservoirs. The specific steps are as follows:
[0076] (1) Screening of oily mud sand
[0077] Union Station D 5 The p...
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