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Applications of line-pack model of gas flow in intermittent gas lift injection line
Tasmi T.a, Rahmawati S.D.a, Sukarno P.a, Soewono E.a
a Department of Mathematics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Indonesia
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2017 Elsevier B.V.Intermittent gas lift is one of injection techniques for mature wells with low-productivity. This technique has two periods i.e. shut-in and production periods. During shut-in period the choke is closed, and the gas flows from the compressor into the gas-line. Furthermore, production period takes place when the choke is open to allow the gas flows into the tubing-casing. This process is similar to line-pack and line-draft in transient gas flow. It is known that the upstream choke pressure should be high enough to lift the oil. Hence, it is very important to control the shut-in period. In this paper, a line-pack model for an intermittent gas lift is constructed. The model is used to predict high-pressure performance at the upstream choke. Moreover, the model is compared with field data from literature. The effect of opened-closed choke to the pressure and the gas rate is analyzed. Sensitivity analysis with respect to gas-line length, gas rate, discharge pressure, and duration of shut-in are shown. The results show that the pressure at the upstream choke can be estimated as well as the duration of shut-in which are critical in increasing the pressure. This model is important for avoiding production operation failure.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Discharge pressures,Gas lines,High pressure,Injection techniques,Line-pack and line-draft,Modeling of gas flows,Production operations,Transient gas flows[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text]An opened-closed choke,Gas-line,High-pressure,Intermittent gas-lift,Line-pack and line-draft,Mature wells[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1016/j.petrol.2017.08.010[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]