Dynamic constraint random modeling method and device
A stochastic modeling and dynamic constraint technology, applied in earthwork drilling, fluid extraction, measurement, etc., can solve problems such as errors and inaccurate models, and achieve the effect of improving accuracy and reliability.
Active Publication Date: 2017-03-22
CHINA UNIV OF PETROLEUM (BEIJING)
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[0004] In the above stochastic modeling process, the influence of dynamic constraints such as production dynamic data in the actual production process is often ignored, resulting in inaccurate models and certain errors with the actual situation
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[0048] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art Modifications to various equivalent forms of the present invention fall within the scope defined by the appended claims of the present application.
[0049] The stochastic modeling method and device for dynamic constraints described in this application will be described in detail below in conjunction with the accompanying drawings. figure 1 is a flow chart of a stochastic modeling method with dynamic constraints provided by an embodiment of the present application. Although the present application provides the method operation steps or device structure as shown in the following embodiments or accom...
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The invention discloses a dynamic constraint random modeling method and device. The method comprises the steps that the gas well effective control range is determined through transient well test, a first sandbody scale is obtained through interwell connectivity analysis, and an initial reservoir model is established with the gas well effective control range and the first sandbody scale as early stage constraints; corresponding relation of the effective permeation rate and unit effective thickness open flow capacity is established, and the static well testing permeation rate is corrected; a dynamic flowing unit is divided through designated parameters, and a numerical value stimulation model is established according to the random modeling method with the static well testing permeation rate and the dynamic flowing unit as medium-term constraints; and geological factors causing instability of the reservoir model are determined according to dynamic and static fitting contradiction analysis, iteration is conducted stepwise, and the reservoir model is corrected. According to the dynamic constraint random modeling method and device provided by the invention, the gas reservoir geological modeling precision is improved by combining influences of dynamic constraint conditions such as production dynamic data in the actual production process.
Description
technical field [0001] The invention relates to the field of fine gas reservoir description, in particular to a dynamic constrained stochastic modeling method and device. Background technique [0002] The fine gas reservoir description is carried out on the basis of the newly added data after the formal development plan of the oil and gas field has been fully drilled. The main task of fine gas reservoir description is to re-understand the gas reservoir geology, confirm the structure, fault, gas layer distribution and sand body connectivity, oil-gas-water interface, reservoir parameters, etc., check the conformity of the development plan design, and improve the geological model , so as to provide geological basis for recalculation of reserves, perforation, and well adjustment. The final result of fine gas reservoir characterization is the establishment of a geological model for the early stages of development. [0003] At present, based on the development and application st...
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IPC IPC(8): E21B47/00E21B49/00E21B43/16
CPCE21B43/16E21B47/00E21B49/00
Inventor 田冷顾岱鸿农森董俊林刘广峰
Owner CHINA UNIV OF PETROLEUM (BEIJING)