초록 ▼

A subterranean well assembly and method of installation which uses a selectively rupturable flow control device to initially block flow and after rupture to allow flow therethrough. The selectively rupturable device is eccentric, in that, it withstands higher pressures without rupture in a flow dire

A subterranean well assembly and method of installation which uses a selectively rupturable flow control device to initially block flow and after rupture to allow flow therethrough. The selectively rupturable device is eccentric, in that, it withstands higher pressures without rupture in a flow direction which ruptures when lower pressures are applied to the device in the opposite direction. The rupturable device is installed in a subterranean well in the flow path between the production tubing string and casing.

대표청구항 ▼

[ We claim:] [1.] A method of installing a landing nipple for a well tool in a tubing string of a subterranean well, the landing nipple being of the type for connection to a fluid control line, comprising:installing the landing nipple in the tubing string, the landing nipple having a port in the wal

[ We claim:] [1.] A method of installing a landing nipple for a well tool in a tubing string of a subterranean well, the landing nipple being of the type for connection to a fluid control line, comprising:installing the landing nipple in the tubing string, the landing nipple having a port in the wall thereof for fluid communication with the control line;connecting the control line to the landing nipple port;connecting a normally closed rupturable eccentric flow control device in fluid communication with the control line and landing nipple port at a location adjacent to the landing nipple with the eccentric flow control device blocking flow through the control line and with the eccentric flow control device having a higher bursting pressure across the device in the flow direction of the well than in the flow direction of the fluid control line;positioning the tubing string and landing nipple in the well;connecting the control line to a pressure source; andthereafter increasing the pressure in the control line at the flow control device to rupture the device and open flow between the control line and landing nipple port.