Horizontal Well Formation Reservoir Classification Analysis Method and Computer Readable Storage Medium
An analysis method and horizontal well technology, which are applied in the fields of earth-moving drilling and production, wellbore/well components, design optimization/simulation, etc. Reservoir utilization, avoidance of waste, and good economy
Active Publication Date: 2021-07-20
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
This kind of graphics is useful for understanding the relationship between well trajectory and reservoir, but it is insufficient for evaluating the effect of horizontal wells, and cannot achieve the purpose of evaluating whether the horizontal section is good or bad
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Embodiment
[0103] figure 1 A flow chart showing the steps of a horizontal well formation reservoir classification analysis method according to the present invention.
[0104] The horizontal well formation reservoir classification analysis method of an exemplary embodiment of the present invention includes:
[0105] Determine the formation encountered in the horizontal section;
[0106] Determine the relationship between the wellbore trajectory in the horizontal section and the formation;
[0107] Calculate the horizontal resistivity and vertical resistivity of the horizontal segment;
[0108] Obtain the shale content of the horizontal section;
[0109] Draw horizontal resistivity, vertical resistivity and oil layer graded analysis diagram of the change of shale content;
[0110] Draw horizontal resistivity, vertical resistivity and oil layer graded analysis diagram of the change of shale content;
[0111] According to the precise relationship between the wellbore trajectory and the ...
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The invention discloses a computer-readable storage medium for a stratum reservoir classification analysis method of a horizontal well, comprising: determining the stratum encountered in the horizontal section; determining the relationship between the wellbore trajectory and the stratum in the horizontal section; and calculating the horizontal resistivity and vertical resistivity of the horizontal section ; Obtain the shale content of the horizontal section; draw the horizontal well oil layer classification analysis diagram of the horizontal resistivity and vertical resistivity changing with the shale content; select the data points of the horizontal well section according to the relationship between the wellbore trajectory and the formation in the horizontal section; The distribution of data points in the flat well section and the hierarchical analysis diagram of the horizontal well oil layer are used for reservoir classification analysis. The advantage of the present invention is that: the present invention provides an effective method for evaluating the level of reservoirs in anisotropic formations of horizontal wells, the level of the reservoir can affect the selection of oil layers for perforation testing in the horizontal section, maximize the utilization rate of the reservoir, and avoid ineffectiveness The perforated interval is wasted, and the economy is better.
Description
technical field [0001] The present invention relates to the field of geophysical well logging, and more specifically relates to a computer-readable storage medium for a hierarchical analysis method of horizontal well formation reservoirs. Background technique [0002] With the deepening of the exploration and development of tight oil and gas and unconventional oil and gas in my country and the development of horizontal well drilling technology, the number of horizontal wells in my country has doubled every year. In a horizontal well, when the wellbore trajectory travels through the formation, due to the heterogeneity of the formation and the difference in the relationship between the wellbore trajectory and the formation position, there are differences in the saturation in the same oil layer. The purpose of graded evaluation of reservoirs in the horizontal section of horizontal wells is to distinguish the good and bad grades of the reservoirs in the horizontal section, to pr...
Claims
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IPC IPC(8): G06F30/13E21B49/00
CPCE21B49/00G06F30/13G06F30/20
Inventor 胡松李军王晓畅孔强夫胡瑶路菁金武军南泽宇
Owner CHINA PETROLEUM & CHEM CORP