Development Strategy Research and Practice on Reservoir with Big Gas Cap and Narrow Oil Rim in Bohai Bay

YANG Qinghong, TONG Kaijun, GE Lizheng, CHENG Dayong, NIE Lingling

Abstract


Reservoir of Es3-I in JZ25-1S oilfield in Bohai bay is a fault type characterizing in big gas cap, narrow oil rim and edge water. The main development problem in gas cap reservoir with vertical wells is coning from gas cap, which causes the oil wells ring gas channeling and seriously affects well productivity. Faced with a number of negative factors and aimed at low development degree of vertical wells, researchers present development from horizontal wells and apply a pilot test and numerical simulation to demonstrate the adaptability. Compared with vertical wells, some obvious advantages of horizontal wells can be demonstrated by deliverability, individual-well controlled reserves, and final development efficiency. The orientation, vertical location, trajectory and length of horizontal wells and production speed in the study areas were also optimally designed. In this optimal design, the length of horizontal segment should be 400 meters; while the vertical distance between the WOC should be a third, and conversely, two-third between the GOC. The horizontal well technology is proved to be helpful for the economic and high efficiency development in Es3-I oilfield. It is showed by the mining practice of horizontal well technology in seven horizontal wells located in the gas cap of JZ25-1S oilfield Es3-I reservoir that the application is good and the daily oil production of the single well is high, from 150 to 300 m3/d. It is proved that there is great potential of the horizontal well in development of the reservoirs with big gas cap and narrow oil rim, which can significantly increase the economic benefits of offshore oil fields and provides a reference for the development of other similar reservoirs.
Key words: Bohai bay; Big gas cap; Narrow oil rim; Horizontal well; Numerical simulation

Keywords


Bohai bay; Big gas cap; Narrow oil rim; Horizontal well; Numerical simulation

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References


[1] Song, H., Fu, X. J., & Fan, H. L. et al. (2009). Development of Complex Carbonate Reservoir with Condensate Gas Cap. Petroleum Exploration and Development, 36(6), 756-761.

[2] Reese, R. D. (1996, October). Completion Ranking Using Production Heterogeneity Indexing. SPE Annual Technical Conference and Exhibition, Denver, Colorado.

[3] Razak, E. A., et al. (2010, June). Risk of Losing Oil Reserve by Gas-Cap Gas Production in Malaysian Thin Oil Rim Reservoirs. International Oil and Gas Conference and Exhibition in China, Beijing, China.

[4] Zhang, J. J., Zhao, Y. Y., & Zhang, N. J. et al. (2009). Adaptability Analysis of Horizontal Well Technology to Oil Reservoirs. Oil Drilling & Production Technology, 31(6), 9-12.

[5] Arnold, C. W., & Djauhari, H. H. (1995, March).Review of Early Horizontal Well Applications in Central Sumatra. SPE 29288 presented at the 1995 SPE Asia Pacific Oil & Gas Conference, Kuala Lumpur.

[6] El-Sayed, S., & Beckie, B. (1996, November). Horizontal Well Length: Drill Short or Long Wells? International Conference on Horizontal Well Technology, Calgary, Alberta, Canada.

[7] Verre, F. et al. (2007, June). Applicability of Water Shut-off Treatment for Horizontal Wells in Heavy-Oil Reservoirs. EUROPEC/EAGE Conference and Exhibition, London, U.K.

[8] Guo, B., Molinard, J. E., & Lee, R. E. (1992, November). A General Solution of Gas/Water Coning Problem for Horizontal Wells. SPE paper 25050 presented at the European Petroleum Conference, Cannes.

[9] Yang, Y. R. (2007). Reservoir Forecast of Drilling of Horizontal Well in Bo-Middle 25-1South Oilfield and Its Management Optimum. Well Testing, 4, 61-64.

[10] Nan, S. (2006). Application of New Type of Geologic Steering Technique in Bozhong 25-1 Oilfield. Mud Logging Engineering, 3, 3-6.

[11] Dandona, A. K., & Morse, R. A. (1975). Down Dip Water Flooding at an Oil Reservoir Having a Gas Cap. Journal of Petroleum Technology, 27(8), 1005-1016.

[12] Chen, H. K. (1993, April). Performance of Horizontal Wells, Safah Field, Oman. Paper SPE 25568 presented at the 1993 SPE Middle East Oil Technical Conference & Exhibition, Bahrain.

[13] Dikken, B. J. (1990). Pressure Drop in Horizontal Wells and Its Effect on Production Performance. Journal of Petroleum Technology, 42(11), 1426-1433.

[14] Billiter, T. C., & Dandona, A. K. (1999). Simultaneous Production of Gas Cap and Oil Column with Water Injection at the Gas/Oil Contact. SPE Reservoir Eval. & Eng., 2(5), 412-419.

[15] Cosmo, C., & Fatoke, F. (2004, August). Challenges of Gas Development: Soku Field Oil Rim Development. Paper SPE 88894 presented at the 28th Annual SPE International Technical Conference and Exhibition, Nigeria.




DOI: http://dx.doi.org/10.3968/j.aped.1925543820130502.1492

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