Application of modernized native equipment in drilling of geothermal wells

Abstract

The experience of restoration and modernization of the domestic drilling rig 1BA-15V-M and its application in the drilling of hydrothermal wells in the Transcarpathian region has been researched. The list of changes in the design of the drilling rig made for improving its technical characteristics is given. To increase the carrying capacity from 200 to 300 kN, the height of the upper section of the mast was shortened by 3 m, and also the crown block was reconstructed, the number of rollers on it was increased from 3 to 4. The bearing structures of the mast were strengthened by the installation of additional belts. The transport vehicle MAZ-5337 is locked to KRAZ-257.
The results of the hydrothermal drilling of this plant and the imported AGBO G750 Germany drilling rigs and Atlas Copco T4W drilling under similar conditions are analyzed. The high efficiency of the application of the modernized drilling rig as compared to the imported ones is established. The growth of the main technical and economic indicators has been achieved: the commercial speed is 1,4–1,9 times; technical – in 1,2–1,3; profitability – in 3,5. Due to a significant reduction in depreciation and fuel costs, the cost of a 1 meter well is reduced by 27%, with a 73% increase in salaries for service personnel.
It is recommended to use restored and modernized 1BA-15V drilling rigs for drilling geothermal wells in Transcarpathian regions up to 1000 m deep.
The main direction of increasing the efficiency of hydrothermal drilling as well as other similar wells is the improvement of domestic technology and expansion of the area of its optimal application