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A NOVEL EXPERIMENTAL INVESTIGATION ON THE OCCURRENCE STATE OF FLUIDS IN MICROSCALE PORES OF TIGHT RESERVOIRS

Oleh   Yishan Liu [-]
Kontributor / Dosen Pembimbing : Xiaohu Dong; Zhangxin Chen; Yanan Hou; Qilan Luo; Yihang Chen
Jenis Koleksi : Jurnal elektronik
Penerbit : Lain-lain
Fakultas :
Subjek :
Kata Kunci : Tight reservoirs; Occurrence state; Recoverable capability; Microfluidic; Micro-CT; Microscale pores
Sumber : Journal of Petroleum Science and Engineering, Volume 196, 2021, 107656, https://www.sciencedirect.com/science/article/pii/S0920410520307233
Staf Input/Edit : Suharsiyah  
File : 1 file
Tanggal Input : 2022-01-12 11:32:11

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Occurrence state of fluids in the microscale pores of tight reservoirs significantly affects the flow behavior and recoverability of reservoir fluid. Currently, microfluidic technique and CT (Computed Tomography) scanning have been widely applied on the reservoir pore structure evaluation and fluid flow behavior characterization due to their high resolution. In this study, combining a microfluidic chip test and a micro CT scanning test on tight rocks, the occurrence state of fluids in microscale pores is experimentally investigated. A set of tests on the microfluidic chips are performed to change the environment temperature, pore size and fluid compositions. Then, combining the results of micro CT scanning on real tight rocks and the results of microfluidic chips, the immobile and movable oil films in microscale pores can be obtained. Results indicates that the oil film thickness in microscale pores is negatively correlated with temperature and positively correlated with pore size. The effect of pore size can be neglected when it is above 15 ?m. The higher the molar weight of fluids is, the thicker the oil film is. And the proportion of immobile and movable states are also closely related to the fluid compositions.