Construction of an efficient development mode for buried-hill fractured reservoirs in Bohai Bay

Lizhen Ge, Kaijun Tong, Zhiqiang Meng, Zhiqiang Zhu, Xiaolin Zhu

Abstract view|155|times       PDF download|0|times

Abstract


Fractured reservoirs are very complicated due to the coexistence of matrix and fractures. In addition, there are plenty of micro-fractures and a few dissolution pores rather than the traditional pores in the matrix of buried-hill fractured reservoirs. Thus, the performance of water flooding is mainly decided by the storage, percolation, and oil displacement characteristics of both fracture and matrix. However, the distribution and transmissibility of both macro-fractures and micro-fractures are actually heterogeneous due to the special origins. Moreover, the mass transfer between matrix and fracture is complicated. Therefore, it is very difficult to construct an effective development mode to obtain a favorable development effect. With the objective of effectively developing such reservoirs, JZ25- 1S in Bohai Bay in China was taken as an example in this paper. First, experiments were conducted to study the stress sensitivity of both matrix and fractures in buried-hill fractured reservoir, and simulations were performed to optimize the initial development project of depletion. Then, 3D large-scale experiments and simulations were demonstrated to study the oil displacement mechanisms and contributions of matrix and fracture for choosing optimal water flooding mode. Subsequently, the impacts of well pattern, injection- production ratio, and water flooding modes on development effects were studied by experiments and production practices in water flooding stage. Ultimately, an effective development mode was presented and used in the JZ25-1S reservoir.

Cited as: Ge, L., Tong, K., Meng, Z., Zhu, Z., Zhu, X. Construction of an efficient development mode for buried-hill fractured reservoirs in Bohai Bay. Advances in Geo-Energy Research, 2020, 4(2): 162-172, doi: 10.26804/ager.2020.02.05.


Keywords


Buried-hill fractured reservoirs; water-flooding system; Bohai Bay; waterflood mode; well pattern

Full Text:

PDF

References


Abass, H.H., Ortiz, I., Khan, M.R., et al. Understanding stress dependent permeability of matrix, natural fractures, and hydraulic fractures in carbonate formations. Paper SPE 110973 Presented at Saudi Arabia Section Technical Symposium, Dhahran, Saudi Arabia, 7-8 May, 2007.

Amin, D., Iman, A., Mohammad, F.N., et al. Application of the transient rate decline analysis for determining average reservoir pressure in naturally fractured reservoirs. Pet. Explor. Dev. 2015, 42(2): 254-258.

Bai, S.Z., Tang, F. Development Model of Fractured Buried Rock Bedrock Reservoir. Beijing, Petroleum Industry Press, 1997. (in Chinese)

Cai, J., Perfect, E., Cheng, C.L., et al. Generalized modeling of spontaneous imbibition based on Hagen-Poiseuille flow in tortuous capillaries with variably shaped apertures. Langmuir 2014, 30(18): 5142-5151.

Chahardowli, M., Zholdybayeva, A., Farajzadeh, R., et al. Solvent-enhanced spontaneous imbibition in fractured reservoirs. Paper SPE 164908 Presented at EAGE Annual Conference & Exhibition incorporating SPE Europec, London, UK, 10-13 June, 2013.

Chen, H., Guo, J. Improving the image of buried-hill complex structures. Abstract SEG-2011-3455 Presented at the SEG Annual Meeting, San Antonio, Texas, 18-23 September, 2011.

Chen, W. The Soviet Union increased the yield by using the unstable water injection method at the later stage of some oilfields. Pet. Explor. Dev. 1989, 12(5): 75-80.

Eliana, A., Norbert, D. Smart waterflooding tight fractured reservoirs using inflow control valves. Paper SPE 84193 Presented at SPE Annual Technical Conference and Exhibition, Denver, Colorado, 5-8 October, 2003.

Gao, L., Yang, Z., Shi, Y. Experimental study on spontaneous imbibition chatacteristics of tight rocks. Adv. Geo-Energy Res. 2018, 2(3): 292-304.

Harimi, B., Masihi, M., Mirzaei-Paiaman, A., et al. Experi-mental study of dynamic imbibition during water flooding of naturally fractured reservoirs. J. Pet. Sci. Eng. 2019, 174: 1-13.

Huang, Y., Shang, G., Chen, Y. Study on periodic water-flooding mechanism by nuclear magnetic resonance imaging. Geophysical Prospecting for Petroleum 1995, 16(4): 62-67. (in Chinese)

Lang, P.S., Paluszny, A., Zimmerman, R.W. Permeability tensor of threedimensional fractured porous rock and a comparison to trace map predictions. J. Geophys. Res. Solid Earth 2014, 119(8): 6288-6307.

Liu, H., Xiao, D., Li, C., et al. Optimized fractured design for buried hill reservoirs. Paper SPE 121016 Presented at Asia Pacific Oil and Gas Conference & Exhibition, Jakarta, Indonesia, 4-6 August, 2009.

Li, X., Li, T., Lu, Y., et al. Petrophysical evaluation of water flooding In Bohai Bay fresh water reservoirs -A case study. Paper SPE 174395 Presented at the EUROPEC 2015, Madrid, Spain, 1-4 June, 2015.

Luo, X., Li, Y., Ge, L., et al. Research and practice of efficient development technology of metamorphic buried hill fracture reservoir. China Offshore Oil and Gas 2016, 28(3): 91-96. (in Chinese)

Meng, Q., Cai, Z., Cai, J., et al. Oil recovery by spontaneous imbibition from partially water-covered matrix blocks with different boundary conditions. J. Pet. Sci. Eng. 2019, 172: 454-464.

Meng, Q., Liu, H., Wang, J. A critical review on fundamental mechanisms of spontaneous imbibition and the impact of boundary condition, fluid viscosity and wettability. Adv. Geo-Energy Res. 2017, 1(1): 1-17.

Min, K.B., Rutqvist, J., Tsang, C.F., et al. Stress-dependent permeability of fractured rock masses: A numerical study. Int. J. Rock Mech. Min. Sci. 2004, 41(7): 1191-1210.

Morrow, N.R., Mason, G. Recovery of oil by spontaneous imbibition. Curr. Opin. Colloid Interface Sci. 2001, 6(4): 321-337.

Pietraszsek-Mattner, S., Barron, J.W., Myers, R.D., et al. Predicting the impact of natural fractures on reservoir performance. Paper WPC-22-0974 Presented at 22nd World Petroleum Congress, Istanbul, Turkey, 9-13 July, 2017.

Pooladi-Darvish, M., Firoozabadi, A. Cocurrent and counter-current imbibition in a water-wet matrix block. SPE J. 2000, 5(1): 3-11.

Raghavan, R., Chin, L.Y. Productivity changes in reservoirs with stress-dependent permeability. Paper SPE 77535 Presented at Annual Technical Conference and Exhibi-tion, San Antonio, Texas, 29 September-2 October, 2002.

Rangel-German, E.R., Kovscek, A.R. Experimental and analytical study of multidimensional imbibition in fractured porous media. J. Pet. Sci. Eng. 2002, 36(1-2): 45-60.

Salimi, H., Bruining, J. The influence of wettability on oil recovery from naturally fractured oil reservoirs including non-equilibrium effects. Paper SPE 138366 Presented at SPE Latin American and Caribbean Petroleum Engineering Conference, Lima, Peru, 1-3 December, 2010.

Tian, Y. Experimental study on stress sensitivity of naturally fractured reservoirs. Paper SPE 173463 Presented at SPE Annual Technical Conference and Exhibition, Amsterdam, The Netherlands, 27-29 October, 2014.

Tong, K., Liu, H., Zhang, Y., et al. Three-dimensional physical modeling of waterflooding in metamorphic fractured reservoirs. Pet. Explor. Dev. 2015, 42(4): 589-596.

Tong, K., Zhao, C., Lv, Z., et al. Reservoir evaluation and fracture characterization of the metamorphic buried hill reservoir in Bohai Bay. Pet. Explor. Dev. 2012, 39(1): 63-69.

Wang, J., Liu, H., Xia, J., et al. Mechanism simulation of oil displacement by imbibition in fractured reservoirs. Pet. Explor. Dev. 2017, 44(5): 805-814.

Wang, J., Liu, H., Zhang, J., et al. Experimental investigation on water flooding and continued EOR techniques in buried-hill metamorphic fractured reservoir. J. Pet. Sci. Eng. 2018, 171: 529-541.

Yang, L., Wang, S., Cai, J., et al. Main controlling factors of fracturing fluid imbibition in shale fracture network. Capillarity 2018, 1(1): 1-10.

Yu, L., Evje, S., Kleppe, H., et al. Spontaneous imbibition of seawater into preferentially oil-wet chalk cores-experiments and simulations. J. Pet. Sci. Eng. 2009, 66(3-4): 171-179.

Zhang, J., Zhang, J., Yang, Y., et al. Mechanism and field test of increasing oil recovery in buried hill crack reservoir. Acta Petrolei Sinica 2004, 25(1): 52-56. (in Chinese)

Zou, H., Zhao, C., Yin, Z., et al. Fracture-occurring outcrop model in neoarchean crystalline rock-buried hill, Bohai Bay Basin. Natural Gas Geoscience 2013, 24(5): 879-885. (in Chinese)


Refbacks

  • There are currently no refbacks.


Copyright (c) 2020 The Author(s)

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Copyright ©2018. All Rights Reserved