Implementation of Automated Expert Diagnostics to Provide Enhanced Rod Pump Surveillance at S. Belridge Field, CA

Gold, David L.; Treiberg, Terry

doi:10.2523/71527-ms

Cited by 1 publication

(1 citation statement)

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“…Often, producing oil fields are equipped with supervisory control and data acquisition systems (SCADA) that collect data from individual wells to a central database. These systems are often referred to as expert systems because the computer program diagnoses, recommends, and in some cases, automatically implements the course of action that an expert in the field of artificial lift would recommend [13,38,58,57,24,40]. The goal of these systems is often to do some or all of the following: recommend optimal system design (such as equipment selection and sizing), implement pump-off controls, and finally, predict equipment failure and maintenance resource allocation.…”

Section: Rod Pump Controllermentioning

confidence: 99%

Model predictive automatic control of sucker rod pump system with simulation case study

Hansen

Tolbert

Vernon

et al. 2019

Computers & Chemical Engineering

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This work enables accelerated fluid recovery in oil and gas reservoirs by automatically controlling fluid height and bottomhole pressure in wells. Several literature studies show significant increase in recovered oil by determining a target bottomhole pressure but rarely consider how to control to that value. This work enables those benefits by maintaining bottomhole pressure or fluid height. Moving Horizon Estimation (MHE) determines uncertain well parameters using only common surface measurements. A Model Predictive Controller (MPC) adjusts the stroking speed of a sucker rod pump to maintain fluid height. Pump boundary conditions are simulated with Mathematical Programs with Complementarity Constraints (MPCCs) and a nonlinear programming solver finds a solution in near real-time. A combined rod string, well, and reservoir model simulate dynamic well conditions, and are formulated for simultaneous optimization by large-scale solvers. MPC increases cumulative oil production vs. conventional pump off control by maintaining an optimal fluid level height.

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