Analysis of complications in the process of gas and gas condensate wells operation and the ways of their elimination

Abstract

The main troubles happening during gas and gas condensate wells operations are highlighted. These issues
have been considered on the example of Yuliivsk and Pasichniansk fields of oil, gas and gas condensate production
and the set of activities for their elimination have been suggested. Thus, to prevent hydrates formation in gas condensate
wells in the Yuliivsk oil and gas condensate field it is recommended to carry out methanol supply through
inhibitor lines to the wellhead. Besides that, it is necessary to perform periodical injection of hydrate formation intogas condensate wells and their lead lines by different ways with the help of movable pumping unit. The selection of
the necessary method should be done due to experimental investigations, separately for the conditions of the certain
gas or gas condensate well. It was suggested to use the efficient method of eliminating hydrate formation in lead
lines of gas condensate wells for the account of rapid gas flow motion together with hydrate formation inhibitors
which will enable to increase the time of hydrate-free operation. To remove fluid which is accumulated in gas
condensate wells of the Yuliivsk oil and gas condensate field it is necessary to do periodical injection of surfactant
solution of different grades and concentration into the annulus of wells and lead lines. The operation of gas condensate
well of Pasichniansk area in the Bytkiv-Babchensk oil and gas condensate field under the conditions of salt
deposition has been analyzed. For the selection of optimum method of eliminating salt deposition it is necessary to
conduct the research with the purpose of defining the composition and the character of depositions, water and gas.
Due to conditions of Bytkiv-Babchensk oil and gas condensate field it is recommended to pump the inhibitor of salt
deposition into the annulus and also it is necessary to consider practical periodical injection of acid solutions. The
ways of eliminating interior and exterior corrosion inside gas condensate wells of the Yuliivsk area of oil and gas
condensate production, underground and surface equipment have been considered. To maintain anti-corrosive
protection in the wells it is necessary to perform the injection of corrosion inhibitor solution and also to consider
the possibility of using lift pipes with special cover and glass-plastic tubing.