Yang Junyu, Shi Weiping, Zhao Yaohua
School of Mathematics, Jilin University, Changchun 130012, China.
Huawei Technologies, Huawei Base, Bantian, Longgang District, Shenzhen 518129, China.
ACS Omega. 2023 Feb 16;8(8):7868-7873. doi: 10.1021/acsomega.2c07596. eCollection 2023 Feb 28.
Horizontal well technology is an efficient method of oil and gas exploitation. The goal of increasing oil production and improving productivity can be achieved by increasing the contact area between the reservoir and the wellbore. The presence of bottom water cresting reduces the efficiency of oil and gas production significantly. Autonomous inflow control devices (AICDs) are widely used to delay the influx of water into the wellbore. Two kinds of AICDs are proposed to restrain the bottom water breakthrough during natural gas production. The fluid flows in the AICDs are simulated numerically. The pressure difference between the inlet and outlet is calculated to evaluate the ability of blocking the flow. A dual-inlet design can increase the flow rate of AICDs, thus enhancing the water blocking effect. Numerical simulations show that the devices can block water flowing into the wellbore effectively.
水平井技术是一种高效的油气开采方法。通过增加储层与井筒之间的接触面积，可以实现提高原油产量和改善产能的目标。底水锥进的存在会显著降低油气生产效率。自主流入控制装置（AICD）被广泛用于延缓水流入井筒。提出了两种AICD来抑制天然气生产过程中的底水突破。对AICD内的流体流动进行了数值模拟。计算进出口之间的压差以评估其阻止流动的能力。双入口设计可以提高AICD的流速，从而增强堵水效果。数值模拟表明，这些装置能够有效地阻止水流入井筒。
