Content Of The Experimental Study Of The Gas Liquid Critical Liquid Carrying Capacity

Gas exploration always accompanied by oil and water from the condensate liquidwhich may be deposited at the bottom of hole liquid. The bottom hole liquid will rise flowingbottomhole pressure increase around the bore water saturation, thereby reducing the effectivepermeability of the gas, leading to the decline in natural gas production of the well, or evenstop. Conventional gas wells late in the mining bottom hole liquid, low permeability gas wellsin the early stages of production of the well bottom hole liquid in there. The study gas liquidcarrying capacity for aqueous wells efficient production of single well production, as well asto improve the oil recovery has important significance. Many experts and scholars at home andabroad have done a lot of work aquifer wells. American scholar Turner et al1969gas liquidcarrying the critical velocity and critical flow model, the critical model for decades has playeda huge role in guiding the work of the gas well drainage and gas. With the deepeningunderstanding of aqueous gas well development, recognize that for liquid holdup high gas well,even if the gas well flow reaches a critical flow will produce effusion. In2009, Zhou and othermulti-drop model, that when the liquid hold-up is higher than a certain value, the criticalflow rate of the gas wells will increase, and increase with the increase of the liquid holdup; ifto increase the gas flow rate, well The bottom fluid will be taken out of the wellhead. Andput forward the theoretical formula, but no experimental verification. In this paper, thecompletion of work:(1) visualization experimental device, compressed air and water as natural gas and liquidgas well in the media on behalf of the wellbore liquid carrying capacity test. Vertical plexiglasstube as the simulation the wellbore has reached visualization purposes; piping installationpressure sensors, pressure sensors, gas mass flow meter, liquid flow rate, temperature sensor,and a remote data acquisition means. Based on the above set of visual wells effusionexperimental apparatus (14m high, the experimental simulation of continuous gas well drainage process piping,50mm).(2) Turner critical flow rate, the gas flow, and gradually increase the amount of liquidinjected from the laboratory to verify the content of the liquid in the gas stream will affect thepoint of view of the critical velocity of the gas; variation of the critical speed of the test gaswith the liquid content;(3) In the case of liquid holdup, gas control valve and pressure regulator adjustment toincrease the gas flow rate, analysis of the critical flow critical flow velocities in the case oflarge liquid holdup.(4) The use of visualization experimental device, verify the droplet theory Zhou, morein-depth theoretical discussion and the establishment of the corresponding theoreticalexplanations and models;(5) To create a simplified model and calculation procedures, so that it can be used inactual production. To the experimental results for data analysis, proposed an amendment to theliquid drop model. Method of extending the gas field, changqing gas field production data, forexample, the use of the appropriate procedures and methods of comparative analysis ofproduction. For the three wells in Changqing Gas Field gas wells bottom hole liquid to cometo a more understanding of the law.The purpose of this dissertation aqueous gas well development in late, and the actualproduction of the high water cut wells, the aqueous liquid carrying gas wells calculated, theoptimization of the gas well production allocation, severe effusion well have a strong resumeproduction guidance.