Determination of location and type of reservoir fluids based on downhole pressure gradient identification
US11946369B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2022 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Aug 30, 2042 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B49/088
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method comprises receiving a measurement of a pressure in a subsurface formation at a number of depths in a wellbore formed in the subsurface formation across a sampling depth range of the subsurface formation to generate a number of pressure-depth measurement pairs and partitioning the sampling depth range into a number of fluid depth ranges. The method comprises performing a fitting operation over each of the number of fluid depth ranges to determine a fluid gradient for the type of the reservoir fluid for each of the number of fluid depth ranges. The method comprises generating a solution set of one or more solutions based on the fluid gradient of the reservoir fluid for each of the number of fluid depth ranges determined from performing the fitting operation, wherein each solution defines a partitioning of the sampling depth range and the fluid gradient of each fluid depth range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.