Method for determining water-drive reservoir flooding rule
A water-flooding and oil-reservoir technology, which is used in earth-moving drilling, wellbore/well components, and production fluids, etc. It can solve the problem that the contour map of water production rate cannot well explain the water-flooding law, low preparation, etc. problems, to achieve the effect of improving development efficiency and high calculation accuracy
Active Publication Date: 2019-11-05
武汉时代地智科技股份有限公司
View PDF7 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The limitation of this method is that there is a large amount of data used for production splitting, which has a certain computational complexity. For dense well patterns, the analysis results obtained through production splitting and then water flooding law analysis are relatively accurate, but for Sparse well pattern, the water production rate contour map obtained through production splitting and interpolation calculation cannot well explain the law of water flooding, and the preparation is low
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0036] A kind of method that the present invention designs to determine the law of flooding of water drive oil reservoir, such as figure 1 As mentioned, it includes the following steps:
[0037] Step 1: Establish the functional relationship between the water saturation of the research target reservoir and the relative permeability of the water phase and the relative permeability of the oil phase;
[0038] Step 2: According to the seepage fractional flow equation of the reservoir combined with the functional relationship between the water saturation of the research target reservoir and the relative permeability of oil and water in step 1, establish the water production rate and water cut used to describe the research reservoir A mathematical model of the relationship between saturation;
[0039] Step 3: Use C++ programming language to analyze a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a method for determining a water-drive reservoir flooding rule. The method includes the following steps that firstly, the function relation between the water saturation and thewater phase relative permeability and the oil phase relative permeability of a research object reservoir is established; secondly, a mathematic model used for describing the relation between the water production rate and the water saturation of the research reservoir is established; thirdly, water saturation data, phase permeation partition data, oil relative permeability data, water relative permeability data, water viscosity, oil viscosity and corner-point grid data coordinates in output data are obtained; fourthly, the water production rates of different simulated time of a research reservoir numerical model is calculated; fifthly, water production rate contour line dividing is conducted; and sixthly, the water production rates of different simulation time of the research reservoir numerical model is subjected to contour line tracking, and water production rate contour line data of different simulated time are calculated. By means of the method, the water production rate change rule of the water-drive reservoir can be well analyzed, and therefore the economic benefits of water-drive oil field development are improved.
Description
technical field [0001] The invention relates to the technical field of oil field development, in particular to a method for determining the water flooding law of a water flooding oil reservoir. [0002] technical background [0003] Through the research on the partial flow equation and oil-water relative permeability data, a mathematical equation between water production rate and saturation is established, which can reflect the relationship between water saturation and water production rate in water drive reservoirs. This relational expression is related to the fluid viscosity. Since the phase-permeability curve reflects the physical properties of the reservoir, it can also reflect the physical properties of the reservoir according to this relational expression. That is, under the same injection-production conditions, except for the different physical properties, other parameters are the same. The relationship between saturation and water production rate will show a big diffe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00E21B43/20
CPCE21B49/00E21B43/20Y02A10/40
Inventor 于本志吴波谢鹏程黄奇熊聪
Owner 武汉时代地智科技股份有限公司