System and program for predicting the shearing by fluid Pressure
AssigneeSeoul National University R&Db Foundation
InventorsKi-Bok MIN, Sehyeok PARK, Linmao XIE
Life of this patent
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Abstract
The present disclosure relates to a system and program for predicting shearing by fluid pressure, the system and program capable of predicting shearing information such as the minimum pressure Pcm required for hydraulic shearing, the sufficient pressure Pco for hydraulic shearing, and the optimal shearing direction using input information including the vertical stress σv, the maximum horizontal stress and the minimum horizontal stress of a rock to which fluid is to be injected, a joint friction angle φ, a reservoir rock density ρr, an injected fluid density, and a coefficient of the sufficient pressure for hydraulic shearing α.
Claims20
A system for predicting shearing by fluid pressure, the system comprising:
- an interaction unit configured to provide a screen for inputting information necessary for shearing prediction and to provide a user with shearing information predicted according to input information;
- and
- a data processing unit configured to receive the input information from the interaction unit and to perform computation for predicting the shearing information,
- wherein the input information includes a vertical stress σv, a maximum horizontal stress and a minimum horizontal stress of a rock to which fluid is to be injected, a joint friction angle φ, a reservoir rock density ρr, an injected fluid density, and a coefficient of a sufficient pressure α for hydraulic shearing, and
- based on an assumption that joints are distributed uniformly in all directions of a reservoir, the data processing unit predicts and provides a minimum pressure Pcm required for hydraulic shearing, the sufficient pressure Pco for hydraulic shearing, and an optimal shearing direction using the input information.
A program for predicting shearing by fluid pressure, the program comprising the following steps:
- inputting input information including a vertical stress σv, a maximum horizontal stress and a minimum horizontal stress of a rock to which fluid is to be injected, a joint friction angle φ, a reservoir rock density ρr, an injected fluid density, and a coefficient α of a sufficient pressure for hydraulic shearing;
- and
- predicting and providing shearing information included in a fast calculation menu, using the input information,
- wherein the shearing information included in the fast calculation menu includes one or more of a minimum pressure Pcm required for hydraulic shearing, a sufficient pressure Pco for hydraulic shearing, and an optimal shearing direction, and the minimum pressure, the sufficient pressure and the optimal shearing direction are computed using the input information, based on an assumption that joints are distributed uniformly in all directions of a reservoir.
Dependencies are inferred from the claim text.