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Yushin, Eugeny S.
- The Calculation Algorithm of the Operating Mode of Production Well for Concentric Lift Columns in Conditions of the Accumulation of Liquid at the Bottom
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Authors
Affiliations
1 Department of Development and Operation of Gas and Oil and Gas Condensate Fields, Ufa State Petroleum Technological University, Ufa, 629303, RU
2 Department of Machinery and Equipment of the Oil and Gas Industry, Federal State Budgetary Educational Institution of Higher Education “Ukhta State Technical University”, Institute of Geology, Oil and Gas Production and Pipeline Transport, Ukhta, 108850, RU
1 Department of Development and Operation of Gas and Oil and Gas Condensate Fields, Ufa State Petroleum Technological University, Ufa, 629303, RU
2 Department of Machinery and Equipment of the Oil and Gas Industry, Federal State Budgetary Educational Institution of Higher Education “Ukhta State Technical University”, Institute of Geology, Oil and Gas Production and Pipeline Transport, Ukhta, 108850, RU
Source
Journal of Mines, Metals and Fuels, Vol 68, No 6 (2020), Pagination: 205-213Abstract
The article proposes a solution to the problem of operating wells at the bottom of which fluid accumulates during the production of reservoir products (using the example of producing wells of the Cenomanian deposit of the Urengoy oil and gas condensate field of Gazprom Dobycha Urengoy LLC, Russia). It is shown that traditionally this field problem is solved by carrying out underground repairs, which creates the risk of the wells not being brought back to the initial parameters, primarily in terms of flow rate. It was also noted that it becomes impossible to operate the wells of the Cenomanian deposit in the conditions of the collapse of the bottom-hole zone of the reservoir with the periodic shutdown of the gas flow from the annulus. The solution to this type of complication in the wells of the Cenomanian deposit of the Urengoy oil and gas condensate field is to transfer the wells to operation using concentric lift columns. This relatively new innovative technology allows for the removal of liquid from the bottom together with gas, thereby avoiding closing the well and its subsequent repair, as well as possible stimulating treatments to restore the necessary flow. The conditions of the transition to the operation of wells in concentric lift columns with the aim of removal of the liquid phase by the gas stream are considered. The methodology for calculating the operating mode of the well of the Urengoyskoye field using concentric lift columns is considered with the aim of ensuring the removal of liquid from the bottom using the software package. It is shown that by calculating the dependencies and the software package, it is possible to determine the critical and recommended flow rate (with a margin of 10- 20%) for the well to work without complications in the conditions of sand development and accumulation of liquid at the bottom.Keywords
Concentric Lift Column, Gas Production, Liquid Accumulation at the Bottom, An Algorithm for Calculating Critical Flow Rate, Software Package.References
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