Research on Feasibility Analysis and Parameter Optimization of Steam Flooding in Heavy Oil Reservoir
Steam flooding has been used widely in the exploitation of heavy oil reservoirs, but there are some problems with the increase of gas injection period, such as the decrease of formation pressure and field production. In view of the current situation and long-term development, conducting the research on the parameter optimization and steam flooding development effectiveness prediction is of great importance. Based on the actual oilfield geological data and formation fluid data, the accurate geologic model and numerical model were established. Meanwhile, the influence of correlative factors on the steam flooding was studied systematically, which contains reservoir permeability, crude oil viscosity, and injection–production parameters. Then multiple parameters optimization was carried out by using orthogonal design, including the well pattern, well spacing, the disposal of the steam injecting parameters. The results indicate that the optimum well pattern is five-spot, which yields an exciting sweep efficiency and oil displacement effect, with the optimized well spacing of 350 m and the optimal row spacing of 300 m. Finally, an optimum scheme was selected based on the comparison of different simulation results, with steam quality of 0.7, steam injection rate of 300 m3/d, production–injection ratio of 1.2, steam injection temperature of 360 °C, which has guiding significance and broad prospects for the development of heavy oil reservoir.
KeywordsHeavy oil reservoir Steam flooding Numerical simulation Parameter optimization
The word was supported by the National Natural Science Foundation of Shandong Province (ZR2016EEB30), the Special Fund for Basic Science Research of Central University (17CX02009A), and the Science Foundation for Doctorate Research of China University of Petroleum (YJ201601093).
- 1.Baker PE (1969) An experimental study of heat flow in steam flooding. SPE J 9(1):8–99Google Scholar
- 3.Jung KD (1984) Unconventional pilot steam drive, tar V sand, long beach unit, Wilmington Field, CA. SPE12775Google Scholar
- 4.Kumar S, Torabzedah SJ, Handy LL (1985) Relative permeability functions for high and low tension system and elevated temperatures. SPE 13670Google Scholar
- 5.Mandl G, Volek CW (1967) Heat and mass transport of steam drive process. SPE 1896-MSGoogle Scholar
- 6.Mohamed A, Shedid A (2015) Feasibility of cyclic and continuous steam injections into a middle-eastern heavy oil reservoir: a simulation approach, SPE-175741-MSGoogle Scholar
- 7.Mollaei A, Maini B, Jalilavi M (2007) Investigation of steam flooding in naturally fractured reservoirs. In: IPTC 11087, international petroleum technology conference (IPTC), Dubai, UAEGoogle Scholar
- 9.Satik C (1998) A study of steam-water relative permeability. Society of Petroleum Engineers Inc. SPE 46209-MSGoogle Scholar
- 10.Shedid SA, Abbas EA (2000) Comparison of chemical steam floods through vertical and horizontal wells. SPE 65482Google Scholar
- 12.Wu S (2001) Steam Distillation in light oil reservoir. Spec Oil ReservGoogle Scholar
- 13.Wu S (2013) A Case Study: Steamflooding to enhance recovery of a waterflooded lightoil reservoir. SPE 166666Google Scholar