基于地质力学模型的X气田防砂临界生产压差预测.pdfVIP

Advances in Geosciences 地球科学前沿, 2016, 6(5), 395-401 Published Online October 2016 in Hans. /journal/ag /10.12677/ag.2016.65041 Predicting the Critical Differential Production Pressure of Sand Prevention for X Gas Field Based on Geomechanics Model Bin Zhao, Hui Zhang, Sheng Chen Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla Xinjiang th th th Received: Oct. 5 , 2016; accepted: Oct. 25 , 2016; published: Oct. 28 , 2016 Copyright © 2016 by authors and Hans Publishers Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). /licenses/by/4.0/ Open Access Abstract Many wells in X gas field produced sand. Geomechanics model was founded and critical differen- tial production pressure was predicted for avoiding the harm induced by sand production. The sandstone in X gas reservoir has a good cementation, and the fracturing mechanism complies with the Griffith criterion. The computational formula of the maximum bottom hole flowing pressure permitted for eliminating sand production was derived through elastic theory and stress analysis of the sandstone around well hole. The pore pressures, principal ground stresses, tensile strength, etc., in different depth of gas reservoir, were calculated by utilizing logging data. And the critical differential production pressures in different depth of gas reservoir were computed with these parameters. The sand production situations of several gas wells in X gas field were investigated, which indicated that the wells would not produce sand while the practical production pressur