Acta mathematica scientia,Series B ›› 2015, Vol. 35 ›› Issue (6): 1547-1565.doi: 10.1016/S0252-9602(15)30073-4

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THEORY AND APPLICATION OF FRACTIONAL STEP CHARACTERISTIC FINITE DIFFERENCE METHOD IN NUMERICAL SIMULATION OF SECOND ORDER ENHANCED OIL PRODUCTION

Yirang YUAN1, Aijie CHENG1, Danping YANG1, Changfeng LI1,2   

  1. 1. Institute of Mathematics, Shandong University, Jinan 250100, China;
    2. School of Economics, Shandong University, Jinan 250100, China
  • Received:2015-02-02 Revised:2014-05-08 Online:2015-11-01 Published:2015-11-01
  • Supported by:

    This work is supported by the Major State Basic Research Development Program of China (G19990328), National Tackling Key Program (2011ZX05011-004, 2011ZX05052, 20050200069), National Natural Science Foundation of China (11101244, 11271231, 10771124, 10372052) and Doctorate Foundation of the Ministry of Education of China (20030422047).

Abstract:

A kind of second-order implicit fractional step characteristic finite difference method is presented in this paper for the numerically simulation coupled system of enhanced (chemical) oil production in porous media. Some techniques, such as the calculus of variations, energy analysis method, commutativity of the products of difference operators, decomposition of high-order difference operators and the theory of a priori estimates are introduced and an optimal order error estimates in l2 norm is derived. This method has been applied successfully to the numerical simulation of enhanced oil production in actual oilfields, and the simulation results are quite interesting and satisfactory.

Key words: enhanced (chemical) oil production, three-dimensional porous coupled system, second-order implicit characteristic fractional step differences, optimal order l2 estimate, application in actual oilfields

CLC Number: 

  • 65M06
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