Wellbore scaling trend prediction method and device

Abstract

The invention provides a wellbore scaling trend prediction method and device. The wellbore scaling trend prediction method comprises the following steps: determining continuous matrix porosity data ofa reservoir section of a to-be-logged well; determining matrix permeability data corresponding to the to-be-logged well according to a preset corresponding relation between the porosity data and thepermeability data; determining longitudinal crack development data of the reservoir section of the to-be-logged well; determining a phase section corresponding to the reservoir section of the to-be-logged well according to the matrix permeability data and the longitudinal crack development data; and determining the scaling trend of the to-be-logged well according to the corresponding phase sectionof the reservoir of the to-be-logged well. The wellbore scaling trend prediction method provided by the invention is used for predicting the wellbore scaling trend.

Description

technical field

[0001] The invention relates to the field of petroleum exploitation, in particular to a method and device for predicting the fouling trend of a wellbore. Background technique

[0002] In the process of oil production, the oil and gas wells with deep original formation pressure greater than 60MPa in the production interval, that is, high pressure oil and gas wells in fractured sandstone, have become an important production field in the field of gas field exploitation. However, during the production process of the fractured sandstone high-pressure oil and gas wells, wellbore fouling is more and more common, seriously affecting stable production.

[0003] In the existing technology, it is still impossible to predict the type and degree of wellbore scaling of fractured sandstone high-pressure oil and gas wells, which makes it more difficult to adopt suitable anti-scaling technology in the completion stage of oil and gas wells, and it is difficult to achieve preci...

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