Methods for vacuumizing and saturating formation water of three-dimensional scale model for microbial oil displacement
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A microbial flooding and scale model technology, applied in the field of petroleum industry, can solve the problems of low work efficiency, low degree of automation, insufficient saturated formation water, etc.
Active Publication Date: 2017-06-30
CHINA PETROLEUM & CHEM CORP +1
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The above method of saturating the formation water is likely to lead to uneven distribution of formation water in the sand filling model and insufficient saturation of formation water, and the time of saturation of formation water is long and the efficiency is low
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Embodiment 1
[0086] A three-dimensional scale model for microbial flooding, the size of the model is 800mm×800mm×60mm, the nine-point well pattern (9 simulated wells), the pore volume of the model is 13.5L, and the saturated Shengli Oilfield is dipped in 3 blocks of formation water, dipped in 3 blocks The reservoir temperature is 65°C. The device and method of the present invention are used to realize automatic vacuuming and saturation of formation water. The automatic vacuumization and saturation of formation water device of this model includes a vacuuming unit, a saturation formation water unit and a control unit.
[0087] The vacuum unit consists of a vacuum pump, the first solenoid valve A of the vacuum pump, the second solenoid valve B of the vacuum pump, and the first, 2, 3, 4, 5, 6, 7, 8, and 9 solenoid valves D 1 、D 2 、D 3 、D 4 、D 5 、D 6 、D 7 、D 8 、D 9 And the composition of high-pressure pipeline; the first solenoid valve D for vacuuming 1 One end of the first simulated w...
Embodiment 2
[0123] A three-dimensional scale model for microbial flooding, the size of the model is 600mm×600mm×60mm, the nine-point well pattern (9 simulated wells), the pore volume of the model is 7.2L, and the formation water of Block Xin 68 in Shengli Oilfield is saturated, Block Xin 68 The reservoir temperature is 90°C. The device and method of the present invention are used to realize automatic vacuuming and saturation of formation water. The automatic vacuumization and saturation of formation water device of this model includes a vacuuming unit, a saturation formation water unit and a control unit.
[0124] The vacuum unit consists of a vacuum pump, the first solenoid valve A of the vacuum pump, the second solenoid valve B of the vacuum pump, and the first, 2, 3, 4, 5, 6, 7, 8, and 9 solenoid valves D 1 、D 2 、D 3 、D 4 、D 5 、D 6 、D 7 、D 8 、D 9 And the composition of high-pressure pipeline; the first solenoid valve D for vacuuming 1 One end of the first simulated well J thro...
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Abstract
The invention belongs to the technical field of petroleum industry and particularly relates to methods for vacuumizing and saturating formation water of a three-dimensional scale model for microbial oil displacement. The methods comprise the automatic vacuumizing method and the automatic formation water saturating method. The automatic vacuumizing method comprises the step that a control unit controls a vacuumizing unit to conduct sequential and circular vacuumizing on simulation wells of the three-dimensional scale model. The automatic formation water saturating method comprises the steps that the control unit controls a formation water saturating unit to conduct sequential formation water saturating on the simulation wells of the three-dimensional scale model. The methods have the characteristics of being simple, high in automation degree, high in operability, safe and reliable. Meanwhile the vacuum degree of the three-dimensional scale model at the time of vacuumizing and the degree of uniform distribution of the formation water in the model at the time of formation water saturating are improved, and accordingly the accuracy and reliability of a microbial oil displacement physical simulation experiment result are improved. Therefore, the methods can be widely applied to experiments of vacuumizing and saturating the formation water of the three-dimensional scale model for microbial oil displacement.
Description
technical field [0001] The invention belongs to the technical field of petroleum industry, and in particular relates to a method for vacuuming and saturating formation water with a three-dimensional proportional model for microbial oil displacement. Background technique [0002] The physical simulation of microbial flooding is a common method for studying microbial flooding reservoirs. The physical simulation experiment of microbial flooding artificially reproduces the development process of microbial flooding reservoirs, more realistically simulates the seepage characteristics of actual reservoirs or oil wells, and studies reservoir parameters. , well geometry factors and external production controllable parameters on the development effect provide an important basis for formulating microbial flooding reservoir development strategies, countermeasures at different development stages, and oil stabilization and water control programs. The physical simulation of microbial flood...
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