PJSC "Ukrgazvydobuvannya", due to the application of an innovative for Ukraine operation, has returned from a lacking fund of a well in the Poltava region, which today gives a quarter of a million daily payouts.
One of the wells of the Ukrhazvydobuvannya in the Poltava region since the beginning of 2017 year was in a short-lived fund, that is, the company did not receive gas from it at all. InformsNational Industrial Portal, Referring to the press service of Ukrhazvydobuvannya.
After thorough studying of the geological and technical data of the well, specialists of PJSC "Ukrgazvydobuvannya", in particular, geologists and field specialists, decided to carry out well cleaning works and the installation of a cement bridge using coiled tubing with the subsequent perforation of the upstream horizons.
During the cleaning of the well, milling was performed with the help of a screw driven motor and well flushing with a multicomponent solvent modified polyacrylamide of Ukrainian manufacture, which was specially developed for the order of specialists of Ukrgazvydobuvannya.
For the installation of a cement bridge using a flexible pipe, a cement mortar with an elongated start time was used, which was developed by another Ukrainian company, taking into account precisely the conditions of the borehole. In addition, in order to provide the necessary strength and tightness of the cement stone, the microcement and plug-in were added to the formulation to create the expansion effect during hardening.
Also, one of the important components of the success of this project was the coordinated and operational work of all services of the contractor and the customer, in particular, the detachment of geophysical research, which provided hardware control of operations in the borehole.
The entire process lasted 5 days, which is much faster than the traditional method with the use of a borehole repair tool.
The experience gained makes it possible to return many wells to operation without the use of machine tools and reduce the time of repair and isolation works for traditional overhauls of wells.
Thus, the production need for Ukrgazvydobuvannya became an impetus for Ukrainian service companies to take decisive action towards the introduction of modern world-wide approaches to repair wells and the development of domestic technologies to achieve energy dependence of our state.