VERIFICAÇÃO DE MODELOS ANALÍTICOS PARA A PERDA DE INJETIVIDADE DE ROCHAS / ANALYTICAL STUDY OF THE INJECTIVITY LOSS OF ROCKS
AUTOR(ES)
URSULA EL-AMME DE ALMEIDA
DATA DE PUBLICAÇÃO
2002
RESUMO
This work deals with the impairment of rocks subjected to the injection of water with solid particles in suspension. The effect of the permeability reduction and consequent loss in rock injectivity is analyzed by the interpretation of core flow tests, previously reported, and simulated by using a computational program developed for this research. The program is based on the Pang and Sharmas model (1994) for the prediction of injectivity decline, chosen amongst a set of existing models, and contemplates the process of impairment due the formation of an external and/or an internal filter cake, where the concept of transition time is introduced. The formulation also uses two important parameters: lambda, defined as filtration coefficient, and beta, damage factor, which can be determined by test data or empirical correlations. A new theory of Bredrikovetsky (2001) that suggests the calculation of both parameters for pressure data is used. With the objective to validate the model and the program, a parametric study is presented whose information can be used in the prediction of the behavior of the injection wells.
ASSUNTO(S)
perda de injetividade injecao de agua water injection loss of injectivity
ACESSO AO ARTIGO
Documentos Relacionados
- NUMERICAL STUDY OF LOSS OF INJECTIVITY IN ROCK
- Aperfeiçoamento do método de elementos analíticos para simulação de escoamento em rochas porosas fraturadas
- Global injectivity for applications between euclidean spaces
- ANALYSIS OF OPTIMIZATION ANALYTICAL MODELS BASED ON SPECIFIC ENERGY APPLIED TO EVAPORITE ROCKS
- Redes neurais aplicadas ao estudo de rochas reservatório