A method for calculating productivity of fractured buried hill gas reservoirs
CN119577314BActive Publication Date: 2025-11-07HAINAN BRANCH OF CHINA NATIONAL OFFSHORE OIL (CHINA) CO LTD
Patent Information
- Application Number
- CN202411613620.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2044-11-13
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Figure CN119577314B_ABST
Abstract
The present application relates to natural gas exploration and development technical field, more particularly, it relates to a kind of fractured buried hill gas reservoir productivity calculation method, comprising the following steps: S1, data collection;S2, data is weighted processing;S3, by thickness weighted average fracture width, thickness weighted average fracture density and thickness weighted average fracture dip obtain weighted fracture equivalent formation coefficient;S4, introduce first productivity calculation formula, weighted fracture equivalent formation coefficient and reservoir total effective thickness are substituted into first productivity calculation formula, obtain second productivity calculation formula;S5, by open flow capacity, second productivity calculation formula is regressed, and fractured buried hill gas reservoir productivity calculation formula is obtained.The present application uses fracture gas reservoir equivalent formation coefficient to characterize gas well productivity, eliminates the influence of reservoir vertical heterogeneity, and the productivity calculation result is more accurate.
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Citation Information
Patent Citations
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