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首页> 外文期刊>Journal of natural gas science and engineering >Simulation of wellbore erosion and sand transport in long horizontal wells producing gas at high velocities
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Simulation of wellbore erosion and sand transport in long horizontal wells producing gas at high velocities

机译：高速井井井井井腐蚀和砂运输的仿真

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摘要

Horizontal wells play a crucial role in improving the recovery of hydrocarbons from thin reservoirs. In weakly consolidated formations, these wells may encounter sand production and this may lead to several problems including wellbore instability, production time loss, corrosion and plugging of downhole and surface facilities. Sand production in wellbores can be linked to two physical phenomena. The first is stress concentration along the wellbore causing mechanical instability and localized failure of the rock. The second is related to hydromechanical forces that cause internal and surface erosion, triggering the release of particles from rock surface, by the action of drag forces of produced matter. In open hole completions, high-velocity gas flow can trigger the release of particles from rock surface.
机译：水平井在提高薄储层油气采收率方面起着至关重要的作用。在弱固结地层中，这些井可能会出砂，这可能会导致几个问题，包括井筒不稳定、生产时间损失、井下和地面设施的腐蚀和堵塞。井筒中的出砂可能与两种物理现象有关。第一种是沿井筒的应力集中，导致岩石的机械失稳和局部破坏。第二种与流体力学力有关，流体力学力导致内部和表面侵蚀，通过产生物质的阻力作用，触发岩石表面的颗粒释放。在裸眼完井过程中，高速气流可以触发岩石表面的颗粒释放。

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