The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform

Paul B. Crawford - One of the best experts on this subject based on the ideXlab platform.

Huilai Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Water-cut rising mechanism and optimized water injection technology for deepwater turbidite sandstone oilfield: A case study of AKPO Oilfield in Niger Delta Basin, West Africa
    KeAi Communications Co. Ltd., 2018
    Co-Authors: Zhiwang Yuan, Baoquan Yang, Li Yang, Xiao Chen, Botao Kang, Huilai Zhang
    Abstract:

    Through the analysis of the reservoir connection relationship and the water-cut rising rules after water breakthrough in the highly volatile oil AKPO oilfield, a new model of water-cut rising was established, and the timing and strategy of water injection were put forward. The water-cut rising shapes of producers after water breakthrough can be divided into three types, and their water-cut rising mechanism is mainly controlled by reservoir connectivity. For the producers which directly connect with injectors in the single-phase sand body of the single-phase channel or lobe with good reservoir connectivity, the water-cut rising curve is “sub-convex”. For the producers which connect with injectors through sand bodies developed in multi-phases with good inner sand connectivity but poorer physical property and connectivity at the overlapping parts of sands, the response to water injection is slow and the water-cut rising curve is “sub-concave”. For the producers which connect with injectors through multi-phase sand bodies with reservoir physical properties, connectivity in between the former two and characteristics of both direct connection and overlapping connection, the response to water injection is slightly slower and the water-cut rising curve is “sub-S”. Based on ratio relationship of oil and water relative permeability, a new model of water cut rising was established. Through the fitting analysis of actual production data, the optimal timing and corresponding technology for water injection after water breakthrough were put forward. Composite channel and lobe reservoirs can adopt water injection strategies concentrating on improving the vertical Sweep Efficiency and Areal Sweep Efficiency respectively. This technology has worked well in the AKPO oilfield and can guide the development of similar oilfields. Key words: deepwater field development, volatile oil reservoir, water-cut rising type, reservoir connection relationship, water-cut rising mechanism, optimized water injectio

  • Water-cut rising mechanism and optimized water injection technology for deepwater turbidite sandstone oilfield: A case study of AKPO Oilfield in Niger Delta Basin, West Africa
    Petroleum Exploration and Development, 2018
    Co-Authors: Yuan Zhiwang, Baoquan Yang, Li Yang, Botao Kang, Chen Xiao, Huilai Zhang
    Abstract:

    Abstract Through the analysis of the reservoir connection relationship and the water-cut rising rules after water breakthrough in the highly volatile oil AKPO oilfield, a new model of water-cut rising was established, and the timing and strategy of water injection were put forward. The water-cut rising shapes of producers after water breakthrough can be divided into three types, and their water-cut rising mechanism is mainly controlled by reservoir connectivity. For the producers which directly connect with injectors in the single-phase sand body of the single-phase channel or lobe with good reservoir connectivity, the water-cut rising curve is “sub-convex”. For the producers which connect with injectors through sand bodies developed in multi-phases with good inner sand connectivity but poorer physical property and connectivity at the overlapping parts of sands, the response to water injection is slow and the water-cut rising curve is “sub-concave”. For the producers which connect with injectors through multi-phase sand bodies with reservoir physical properties, connectivity in between the former two and characteristics of both direct connection and overlapping connection, the response to water injection is slightly slower and the water-cut rising curve is “sub-S”. Based on ratio relationship of oil and water relative permeability, a new model of water cut rising was established. Through the fitting analysis of actual production data, the optimal timing and corresponding technology for water injection after water breakthrough were put forward. Composite channel and lobe reservoirs can adopt water injection strategies concentrating on improving the vertical Sweep Efficiency and Areal Sweep Efficiency respectively. This technology has worked well in the AKPO oilfield and can guide the development of similar oilfields.

Terry A. Strickland - One of the best experts on this subject based on the ideXlab platform.

Bo Dong - One of the best experts on this subject based on the ideXlab platform.

  • lbm simulation of viscous fingering phenomenon in immiscible displacement of two fluids in porous media
    Transport in Porous Media, 2011
    Co-Authors: Bo Dong, Yuying Yan
    Abstract:

    This article presents the lattice Boltzmann simulation of viscous fingering phenomenon in immiscible displacement of two fluids in porous media. Such phenomenon generally takes place when a less viscous fluid is used to displace a more viscous fluid, and it can be found in many industrial fields. Dimensionless quantities, such as capillary number, Bond number and viscosity ratio between displaced fluid and displacing fluid are introduced to illustrate the effects of capillary force, viscous force, and gravity on the fluid behaviour. The surface wettability, which has an impact on the finger pattern, is also considered in the simulation. The numerical procedure is validated against the experiment about viscous fingering in a Hele-Shaw cell. The displacement Efficiency is investigated using the parameter, Areal Sweep Efficiency. The present simulation shows an additional evidence to demonstrate that the lattice Boltzmann method is a useful method for simulating some multiphase flow problems in porous media.

  • Simulation of the Influence of Surface Wettability on Viscous Fingering Phenomenon in Porous Media
    Journal of Bionic Engineering, 2010
    Co-Authors: Bo Dong, Yuying Yan, Yongchen Song
    Abstract:

    Fingering phenomena are common occurrence in the natural world. It generally takes place when a less viscous fluid displaces a more viscous fluid typically in porous media. Nowadays, such phenomena have extensively been studied due to its importance in many industrial fields. In this paper, the effects of surface wettability on finger pattern are studied and simulated numerically by the Lattice Boltzmann method (LBM). The displacement Efficiency is investigated by using two parameters, namely, the breakthrough time and the Areal Sweep Efficiency. The simulation has demonstrated that surface wettability will influence the finger pattern no matter the gravity is considered or not, but in the presence of gravity, the finger pattern is much more complicated and irregular due to the coexistence and competition of capillary force, viscous force and gravity.

Yuying Yan - One of the best experts on this subject based on the ideXlab platform.

  • lbm simulation of viscous fingering phenomenon in immiscible displacement of two fluids in porous media
    Transport in Porous Media, 2011
    Co-Authors: Bo Dong, Yuying Yan
    Abstract:

    This article presents the lattice Boltzmann simulation of viscous fingering phenomenon in immiscible displacement of two fluids in porous media. Such phenomenon generally takes place when a less viscous fluid is used to displace a more viscous fluid, and it can be found in many industrial fields. Dimensionless quantities, such as capillary number, Bond number and viscosity ratio between displaced fluid and displacing fluid are introduced to illustrate the effects of capillary force, viscous force, and gravity on the fluid behaviour. The surface wettability, which has an impact on the finger pattern, is also considered in the simulation. The numerical procedure is validated against the experiment about viscous fingering in a Hele-Shaw cell. The displacement Efficiency is investigated using the parameter, Areal Sweep Efficiency. The present simulation shows an additional evidence to demonstrate that the lattice Boltzmann method is a useful method for simulating some multiphase flow problems in porous media.

  • Simulation of the Influence of Surface Wettability on Viscous Fingering Phenomenon in Porous Media
    Journal of Bionic Engineering, 2010
    Co-Authors: Bo Dong, Yuying Yan, Yongchen Song
    Abstract:

    Fingering phenomena are common occurrence in the natural world. It generally takes place when a less viscous fluid displaces a more viscous fluid typically in porous media. Nowadays, such phenomena have extensively been studied due to its importance in many industrial fields. In this paper, the effects of surface wettability on finger pattern are studied and simulated numerically by the Lattice Boltzmann method (LBM). The displacement Efficiency is investigated by using two parameters, namely, the breakthrough time and the Areal Sweep Efficiency. The simulation has demonstrated that surface wettability will influence the finger pattern no matter the gravity is considered or not, but in the presence of gravity, the finger pattern is much more complicated and irregular due to the coexistence and competition of capillary force, viscous force and gravity.