Pressure integrity testing of one-trip completion assembly

A method for use in installing a completion assembly in a wellbore in a single trip into the wellbore, the completion assembly defining a throughbore and comprising:

• a multi-cycle isolation valve which is configurable between an open state in which the isolation valve permits fluid to flow through the throughbore and a closed state in which the isolation valve prevents fluid from flowing through the throughbore,
• a base pipe which defines the throughbore, and one or more ports extending through a sidewall of the base pipe, wherein the ports are configurable between a closed state to an open state, and
• one or more port plugs, each port plug being configured to selectively occlude a corresponding port;
• the method comprising:
• running the completion assembly into the wellbore with the isolation valve in the open state until a downhole end of the completion assembly reaches one target position of a plurality of target positions in the wellbore;
• injecting a fluid through the throughbore and the isolation valve when the isolation valve is in the open state;
• configuring the isolation valve into the closed state;
• performing a pressure integrity test of the throughbore above the isolation valve;
• further running the completion assembly with the insolation valve in the open state until the downhole end of the completion assembly reaches a second target position of the plurality of target positions in the wellbore;
• repeating the injecting, configuring, performing and further running steps for each target position of the plurality of target positions;
• and
• wherein the isolation valve is configurable between the open and closed states without any requirement for the isolation valve to be mechanically engaged by an activation member or a tool whilst the isolation valve receives power from a power source.