A quantification method of dynamic connectivity between wells based on xgboost
A technology of inter-well connectivity and quantification method, which is applied in the field of inter-well dynamic connectivity quantification based on XGBoost, which can solve the problem that it is difficult to consider shut-in, it is difficult to accurately reflect the production situation, and the attenuation and time delay of signal propagation are not considered. question
Active Publication Date: 2022-07-12
XIAMEN UNIV
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Problems solved by technology
However, these commonly used models can only select relatively stable and continuous oil well production cycles, and cannot consider the shutdown of wells, nor consider the attenuation and time lag in the signal propagation process, and it is difficult to accurately reflect the actual production situation
Existing inter-well connectivity models in oilfields have incompatibility problems that are difficult to consider well shut-in problems and unstable production
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[0013] In order to make the invention purpose, technical process and technical innovation points of the present invention more clearly described, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
[0014] In order to achieve the above objects, the present invention provides a method for quantifying dynamic connectivity between wells based on XGBoost. The main process is as figure 1 As shown, the method includes:
[0015] Step 1: Data preparation, collect production data of injection wells and production wells during the statistical period. The production data inc...
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The invention provides a method for quantifying dynamic connectivity between wells based on XGBoost, the method includes: step 1, data preparation; step 2, constructing relative features; step 3, quantifying connectivity between wells; step 4, performing model verification . For unstable production data, the present invention establishes a method for quantifying dynamic connectivity between wells that can consider unstable production conditions. It overcomes the incompatibility of the existing inter-well connectivity model in the oil field, which is difficult to consider the well shut-in problem and unstable production.
Description
technical field [0001] The invention belongs to the field of oil and gas field exploitation, and in particular relates to a method for quantifying dynamic connectivity between wells based on XGBoost. Background technique [0002] Well connectivity refers to the connection between injection wells and production wells in water injection development. Connectivity is an important part of reservoir evaluation and an important basis for formulating oilfield development and adjustment plans. It usually includes dynamic connectivity and static connectivity. The dynamic connectivity between wells is the connectivity of fluids in the reservoir, which is essentially different from the static connectivity through stratigraphic correlation. At present, the dynamic connectivity between wells is mainly studied through logging, numerical simulation, tracking test, oil storage engineering method and dynamic inversion. Well logging, tracking test and other methods will affect the normal pr...
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IPC IPC(8): G06F30/20E21B43/20E21B43/30E21B47/00G06F111/10
CPCG06F30/20E21B47/00E21B43/20E21B43/30G06F2111/10
Inventor 刘昆宏吴清强叶西蒙矫丽瑶姚俊峰
Owner XIAMEN UNIV