西南石油大学学报(自然科学版) ›› 2010, Vol. 32 ›› Issue (1): 89-92.DOI: 10.3863/j.issn.1674-5086.2010.01.016

• 石油与天然气工程 • Previous Articles     Next Articles

THE RESEARCH ON FRACTURE EXTENSION MODEL FOR SECONDARY SANDING FRACTURING

LI Yong-ming1;LI Chong-xi2;GUO Jian-chun1;MAO Hu1;SUN Zhao-xu2   

  1. 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu Sichuan 610500,China;2.Oil Production Research Institute,Jilin Oil Company,CNPC,Songyuan Jilin 131103,China
  • Received:2008-11-04 Revised:1900-01-01 Online:2010-02-20 Published:2010-02-20

Abstract:

Due to the research on secondary sanding fracturing is in the stage of exploration,the relevant theory is deficient.The sand levee has formed during the first fracturing process,considering the effects of sand levee height change with time and on the fluid flow and proppant sedimentation,the fracture extension model of secondary sanding fracturing is established.The model includes the continuity equation of fluid flow,pressure drop equation,fracture width model and height model,in which the pressure drop model is based on the parallel plate theory and mechanical equilibrium principle.Different from the conventional pressure drop,the new model considers the effects of sand levee upon the fluid flow.Through the calculation by programming,the results show that the stimulation effect of secondary sanding fracturing is better than that of conventional fracturing,so the new model is worthy of popularization and application.

Key words: secondary sanding fracturing, pressure drop, sand levee, fracture configuration, model

CLC Number: