Patent ID: 9581017
Date: 2017-02-28
CPC Classifications: E21B

Claim:
1. An apparatus for testing hydrocarbon bearing formations using coiled tubing and a bottom hole assembly (BHA) comprising of: i) a realtime measurement sub that houses a pressure measurement sensor, a casing collar locator sensor and a temperature sensor; ii) a disconnect sub, for disconnecting the coiled tubing from the BHA below said disconnect sub; iii) a pump through flapper safety valve operable to restrict a volume of formation fluid drawn from a formation allowed to enter the coiled tubing to prevent said formation fluid from reaching the surface, the volume comprising a predetermined volume determined by calculating a volume of the coiled tubing that is inside the well, a density of fluid in the coiled tubing before drawing fluid from the formation, a density of the formation fluid entering the coiled tubing, and an initial pressure of both fluids before allowing communication; iv) a ported drain sub; v) a memory gauge carrier sub; vi) a coiled tubing jar sub; vii) a retrievable hydraulically set packer; viii) a burst disk sub; ix) a perforating gun firing head; and x) a perforating gun; wherein the pressure measurement sensor of the realtime measurement sub reads tubing pressure, annulus pressure and the pressure below the retrievable hydraulically set packer.