| Autor: |
Daniel F. Dorffer, A. Webb, Julian Morgan Singer, Sushovon Singha Roy, Mehdi Azari, Vincent Jaffrezic, Jean Pierre Rochon, Jean-Luc Boutaud de la Combe |
| Rok vydání: |
2008 |
| Předmět: |
|
| Zdroj: |
All Days. |
| DOI: |
10.2118/115820-ms |
| Popis: |
One of the predicaments of traditional well testing is the requirement of shutting-in a well to conduct a pressure buildup test for the purpose of obtaining well and reservoir properties. This deterrent factor is more prominent in prolific wells due to loss of revenue and problems associated with crossflow or when bringing a well back on production. Moreover, in case of commingled reservoirs, conventional buildup provides only average values of permeability, skin, and pressure. An innovative periodic well testing technique named WTPL (Well Testing by Production Logging) has been developed in which a cyclic wave function is imposed in the wellbore by modulating the flowrate. The analysis of the acquired rate function and the resulting pressure wave then provides formation characteristics such as permeability and skin in the vicinity of the well. This technique eliminates the disadvantage of shutting-in a well and maintains the production with a modulating periodic pattern. In addition, the WTPL can be easily applied to commingled reservoirs to estimate the individual permeability and skin for each layer. This effort has also resulted in the development of a downhole flow modulation tool capable of creating the cyclic flow patterns needed for the new testing method. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
