METHOD AND APPARATUS FOR INSTALLING AND REMOVING AN ELECTRIC SUBMERSIBLE PUMP

摘要

In combination, an inverted electric submersible pump (ESP) sized to fit within a downhole production path and a coiled tubing string. The coiled tubing string has an internal bore, and one or more supply lines housed within the internal bore and connected between surface and the inverted ESP. The inverted ESP has a pump section and a motor section, the motor section disposed above the pump section, and the pump section having one or more inlet ports and one or more outlet ports. At least one sealing element is positioned between the one or more inlet ports and the one or more outlet ports and is sized to seal against the downhole production path. A coiled tubing connection sealably connects the motor section to the coiled tubing string.

主权项

1. In combination, an inverted electric submersible pump (ESP) sized to fit within a downhole production path, a coiled tubing string, and a downhole seat engagement seal carried by the downhole production path, wherein:
the coiled tubing string comprises:
an internal bore;an oil delivery line housed within the internal bore connected to a supply of oil on surface and to the inverted ESP at a pressure greater than the pressure of a wellbore; andone or more transmission lines, each transmission line comprising an electric power line or a temperature and pressure data acquisition and transmission line, wherein the oil delivery line is a metal capillary tube and provides structural support to the one or more transmission lines; the inverted ESP comprises:
a pump section and a motor section, the motor section disposed above the pump section, the pump section comprising one or more inlet ports and one or more outlet ports;at least one pump sealing ring positioned between the one or more inlet ports and the one or more outlet ports; anda coiled tubing connection for sealably connecting the motor section to the coiled tubing string; and the downhole seat engagement seal comprises a pump seating nipple that engages and seals directly against the pump sealing rings on the pump section such that the one or more inlet ports are directly open to a hydrocarbon formation, and the one or more outlet ports are in communication with an interior of the production path.