Method and system for forecasting crude oil production by fracture imbibition

Abstract

The invention provides a method and a system for predicting crude oil output by fracture imbibition. The method includes: inputting the height of the imbibition front of the fracture at the last imbibition moment, the opening of the fracture, the first physical parameter, the current imbibition moment and the last imbibition moment to the pre-set height prediction model of the imbibition front , get the preset height of the imbibition front of the fracture at the current imbibition moment; determine the imbibition front height of the fracture at the current imbibition moment according to the preset height of the imbibition front of the fracture at the current imbibition moment and the core height; Input the fracture opening, length opening ratio, the number of fractures with the fracture opening and the imbibition front height at the current imbibition time into the fracture imbibition crude oil production prediction model, and obtain the imbibition crude oil production of the fracture at the current imbibition time ; Predict the imbibed crude oil production of the core at the current imbibition time according to the imbibed crude oil production of each fracture at the current imbibition time to create or adjust the reservoir resource development plan. The invention can effectively guide the development process of oil reservoir resources.

Description

technical field [0001] The invention relates to the technical field of oil reservoir exploration and development, in particular to a method and system for predicting crude oil output by fracture imbibition. Background technique [0002] Shale reservoirs generally have tight reservoirs, complex pore-throat structures, and strong imbibition, which is an important field for future oil and gas exploration and development in my country. Since shale reservoirs are generally developed with beddings and are easily fractured along the bedding direction, the study of fracture imbibition mechanism is of great significance to the development of shale reservoirs. [0003] The current research on fractures generally focuses on the influence of fractures on oil and gas migration and enrichment, and mostly stays on the identification, characterization and distribution of fractures. There is no research on the use of fracture imbibition theory to predict oil production through fracture imbib...

AI Technical Summary

Problems solved by technology

[0003] The current research on fractures generally focuses on the influence of fractures on oil and gas migration and enrichment, and mostly stays on the identification, characterization and distribution of fractures. There is no research on the use of fracture imbibition theory to predict oil production through fracture imbibition. Good combination of fracture and reservoir development

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