Vol. 09, No. 03 [March 2023]

A smart vehicle is designed with multi-functions, such as straw grid laying and vegetation seeding. The vehicle realizes the automatic and integrated laying of horizontal and longitudinal straw curtains and then carries out climbing plow sowing and planting auxiliary work. The straw tubes can also be replaced automatically. The vehicle can realize human-computer interaction, remote control, and other intelligent operations through an APP and voice module, this intelligent equipment can be used in harsh environments with serious desertification.
Key Words: Straw curtain integrated laying, plowing seeding, automatic weeding, human-computer interaction, remote control

Liquid accumulation has been known to occur in gas wells flowing under liquid loading regime. Previous solutions have been provided that considered flow parameters such as gas velocity, flow rate and surface tension, but this work considered the impact of the tortuosity of the wellbore path. Tortuosity of the wellbore is basically the measure of deviation of the wellbore from a straight path. Data was obtained from literatures and from the industry. Introducing critical assumptions of a truly vertical well and using Microsoft Excel, two regression models were developed that showed a linear relationship between the true vertical depths and gas liquid ratio which was used to measure the accumulation of liquids in the wellbore. This linear relationship can be explained as the action of gravity on coproduced liquids. This is because for wells flowing under the liquid loading regime, the velocity of the gas is below critical thus, coproduced liquids fall back under the action of gravity. The First model was preferred because it had a root mean square error value that was significantly less than the other. This result proves that for wells under the liquid loading regime, liquid accumulation increases with depth and solutions to lift liquids would be more effective at points closer to the well bore. Also, using this model, production engineers can spot the point liquid removal methods such as ESP can be applied. Further studies on this subject matter that introduces the dogleg severity at known depth and removes the critical assumption of a truly vertical well should be able to develop a model that shows the depths at which the velocity of the gas is below critical.
Key Words: Tortuosity, Liquid Loading, Gas well, True Vertical Depth, Velocity