DESIGN OF COASTAL MULTI-HOLE INTELLIGENT GAS WELL FOR DEVELOPMENT OF OFFSHORE DEPOSIT Russian patent published in 2016 - IPC E21B43/01 E21B43/02 E21B43/10 E21B7/04 E21B47/06 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the oil and gas industry, namely, the production of gas in the operation of ships and offshore, including the Arctic zone. Design includes a well drilled from the coastal zone of the main trunk with vertical portion, obliquely directed portion and the horizontal leg, ending in the reservoir. Upper part of the main borehole is equipped technical columns and placed them in the production string. This well equipped for the operation of the composite tubing. Vertical section of the main trunk traced to the level of the bottom of the sea. Obliquely directed portion of the main section is formed with deviation from the vertical in the range of up to 80 degrees. Horizontal section is laid under the bottom of the sea with a long, providing drilling-deposits offshore field in the desired design point. End of the horizontal section of the main trunk laid along the longitudinal axis of the reservoir offshore field in the horizontal direction parallel to the roof of the productive layer, perpendicular to the horizontal section above the gas-contact. Front end of the main bore of the main trunk on the same productive stratum laid horizontally sidetrack directed in opposite direction from the end of the horizontal section of the main trunk. End of the horizontal wellbore and sidetrack equipped with shanks filters. Component production tubing is provided with an underground well equipment. Well equipped located at the end of the horizontal section of the main trunk and lateral trunk and built-in flow meters downhole cameras with pressure and temperature sensors, and the Christmas tree wellhead well equipped with actuators adapted to control.

EFFECT: improve productivity and increase gas production by expanding the area draining the productive formation and increase information content of the extraction of gas from the main and lateral stems.

2 cl, 3 dwg