Schlumberger Technology Corporation

Lawrence Camilleri

Brian Scott

Agha Hassan Akram

A system, method, and computer readable medium for calculating well flow rates produced with electrical submersible pumps using measured voltage, current, frequency and pressure data. An efficiency to flow rate ratio is calculated from the voltage, current, and pressure data. The efficiency to flow rate ratio is used to obtain a non-dimensional flow rate. The flow rate through the electrical submersible pump is calculated from the non-dimensional flow rate.

System, method, and computer readable medium for calculating well flow rates produced with electrical submersible pumps

A technique enables independent lifting of fluids in a well. The technique utilizes an electric submersible pumping system which is disposed in a wellbore and encapsulated by an encapsulating structure. The encapsulating structure has an opening through which well fluid is drawn to an intake of the electric submersible pumping system. A dual path structure is positioned in cooperation with the electric submersible pumping system and the encapsulating structure to create independent flow paths for flow of a gas component and a remaining liquid component of the well fluid. The independent flow paths also are arranged to prevent contact between the well fluid components and a surrounding wellbore wall.

Electrical submersible pumping system with gas separation and gas venting to surface in separate conduits

Method and system for determining a characteristic of a subsurface formation traversed by a wellbore. A fluid flow rate in the wellbore is established, the flow being associated with fluid movement in one or more layers in the formation. Fluid data is generated from the fluid flow. The fluid flow rate in the wellbore is selectively altered, and fluid data is re-generated pertaining to the altered flow rates. The fluid data is processed to determine desired reservoir parameters and/or characteristics of an identified stratum in the formation. A method identifies inflexion points on a single phase oil only curve plot using the fluid data to determine layer characteristics and flow stability.

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Lawrence Camilleri