Patent ID: 8757255
Filing Date: 2014-06-24
Classification: E21B

Abstract:
1. A heavy-oil-based hydrocarbons effluent production installation for a production of hydrocarbons from at least one well, the installation comprising: an effluent-lightening fluid injection system at a bottom of the well; an effluent-evacuation pump; a plurality of sensors for measuring physical units relating to the installation; and an automated device for optimizing a lightening-fluid injection flow-rate and for regulating a speed of the pump, according to the physical units and a predetermined target production value, the pump speed and the physical units each within a predetermined range of values, wherein the lightening-fluid injection flow-rate is proportional to a gravity index of the effluent, the automated device performing a real-time calculation of the gravity index of the effluent, wherein one of the sensors is a first pressure sensor located at a wellhead and another sensor is a second pressure sensor located at a discharge of the pump, wherein the automated device is further for calculating a gravity index of the effluent according to data provided by said first and second pressure sensors.