TWO ENVIRONMENTAL-FRIENDLY DRILLING RIG IN ARCTIC DESIGN Russian patent published in 2019 - IPC E21B7/02 

FIELD: drilling of soil and rocks.

SUBSTANCE: invention relates to drilling unit for cluster drilling of prospecting and operating oil and gas wells in cold climatic conditions, for example, Far North of Russia. Proposed unit comprises overhead winch unit with base and tower mounted on two-echelon guides of circulating system equipment, including drilling mud preparation, cleaning and storage unit and drilling fluid supply pump unit, as well as a receiving bridge unit and an electrical equipment unit connected to the circulating system equipment. Module of the electrical equipment unit containing the transformer, the complete thyristor device and the low-voltage complete device is located in the first tier, and the module of the electrical equipment unit containing the diesel power plant - in the second one. Installation has a shelter. First echelon comprises a hoisting unit with a U-shaped mast tower for cluster drilling, a drilling mud cleaning unit, a mud storage unit, a unit of electrical equipment containing a diesel power plant. Second echelon comprises a preparation unit, a unit of drilling pumps, a unit of electrical equipment containing a transformer, a complete thyristor device, a low-voltage complete device. Second tier houses a unit for cleaning drilling mud from the first echelon, as well as a receiving bridge unit located above the electrical equipment unit from the second echelon.

EFFECT: simplified and faster mounting, easier maintenance and repair, as well as higher environmental safety.

4 cl, 12 dwg