CONNECTIONS OF WELLHEAD AND SURFACE EQUIPMENT OF COAL-METHANOL WELLS FOR ACCUMULATION OF NON-PURIFIED GAS Russian patent published in 2010 - IPC E21B43/00 F17D1/04 

FIELD: oil and gas industry.

SUBSTANCE: connection includes non-purified gas discharge line connected to the first discharge of after-tube channel of the well, brine water cleaning and degasation line attached to the first discharge of tube channel of the well, and brine water discharge line to utilisation. Lines are equipped with shutoff, control and measuring assemblies. Brine water cleaning and degasation device is equipped with an assembly for determining the contamination degree of its filtering element. Discharges of tube and after-tube channels of the well are made in tubing wellhead. The second discharge of after-tube channel of the well is equipped with echo sounder-level metre and sealing assembly of cable of bottom-hole pressure gauge. The third discharge of after-tube channel of the well and the second discharge of tube channel of the well are equipped with quick-detachable connection assemblies. In the third and the fourth discharges of tube channel of the well, which are located opposite each other, there installed are detachable devices for gripping and fixing of polished rod of the well pump.

EFFECT: simplifying the design and enlarging functional capabilities.

4 cl, 1 dwg