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PrJSC MC Ukrnaftoburinnya has completed works on the transfer of well No. 54 of the Sakhalin oil-gas operating mode changing from gas-lift to submersible pumping operation by installing a sucker rod pumping (SRP) unit.
The following works were carried out:
- tubing replacement and running into the hall (RIH) of seating nipple;
- RIH of the 25-150 RHBM-30-6-0-0 insert rod pump to 3251 meters is being the deepest sucker rod pump`s installation in Ukraine;
- wellhead modernisation for the operation of the SRP;
- installation of surface equipment, namely unit Maximizer ІІІ 912-365-192 HM w/BL with a control cabinet.
The contractors were Budproektservis LLC, responsible for the design of re-equipment of the wellhead; Innovative Engineering Solutions LLC – construction and installation works; Oranta LTD LLC– well workover, Weatherford Ukraine LLC – supply of the sucker rod pump unit equipment and construction supervision of underground and surface equipment.
Repair and installation work on the transfer of the well to the pumping operation of the sucker rod pump unit was carried out over 16.5 days.
“The transfer of the well to the pumping operation of the sucker rod pump unit made it possible to ensure an average daily flow rate of 14.1 tonnes of oil and 2.2 thousand cubic meters of gas, which is 5.1 tonnes of oil and 1.1 thousand cubic meters of gas more compared to the gas-lift method of operation. The change in the well operation method also made it possible to eliminate the additional costs associated with the preparation of the reverse gas-lift gas and its ineffective use. The sucker rod pump unit is equipped with an intelligent control system with a frequency drive and a remote control and monitoring system. UNB continues to use the most effective technologies and equipment for well operation,” Miljenko Cimic, Chief Operating and Development Director of PrJSC MC Ukrnaftoburinnya, commented.
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