TECHNOLOGY OF WELL CONSTRUCTION Russian patent published in 2001 - IPC

FIELD: technology of well construction in geological structures; applicable in search and exploration of mineral deposits, particularly, hydrocarbon raw materials, in sinking of exploratory wells, producing wells and workings. SUBSTANCE: technology of well construction includes preparation of working area, installation of blowout preventer, pulling and running equipment. Blowout preventer is used with guide in the form of through cylinder forming wellhead and equipped with grips in which drilling apparatus is installed. Through cylinder has section of flexible yielding material. During sinking of well, its walls are lined with plasticized solution and low-melting substance sprayed on walls and treated with heat of working agent flowing from drilling apparatus. In tapping of producing formation, transducer registering presence of hydrocarbons and secured to apparatus body sends signal for shutoff of well cross-section. Control over well production rate is carried out by withdrawn hydrocarbons. In case of drop of well production rate, drilling apparatus is used again for drilling a side well into producing formation to increase area of fluid inflow. Simultaneously with sinking of side well, formation structure is subjected to acoustic treatment with flowing working agent due to regulation of process by working agent flow rate. EFFECT: reduced time, labor input, expenditures for well construction and its development for proper operation. 2 cl, 2 dwg