Tubing drain for tubing used with downhole pump

A method for draining tubing disposed in a wellbore, the tubing connected to a downhole pump disposed in the wellbore, the method comprising:

• a) placing a drain valve in the tubing disposed in the wellbore, the drain valve comprising:
• i) a tubular body comprising one or more drain ports disposed through a sidewall therethrough, the drain ports configured to provide communications between an interior of the tubing and the wellbore, the tubular body either comprising an upper end and a lower end, each of the upper and lower ends configured to threadably connect with the tubing disposed above and below the tubular body or is disposed within the downhole pump,
• ii) a sleeve valve disposed within the tubular body, the sleeve valve comprising an inside diameter substantially the same of that of the tubing, the sleeve valve configured to move between a first position, where the sleeve valve closes off the drain ports, and a second position, where the sleeve valve opens the drain ports, the sleeve valve further configured for communication therethrough when the sleeve valve is in both of the first and second positions,
• iii) an operating mechanism configured to move the sleeve valve between the first position to the second position wherein the interior of the tubing is in communication with the wellbore, and
• iv) a biasing mechanism configured to keep the sleeve valve in one of the first and second positions;
• and
• b) using the operating mechanism, moving the sleeve valve from the first position to the second position whereby fluid disposed in the tubing drains through the drain ports into the wellbore.