Model E Well Analyzer

Well Management Instrument

Echometer’s Well Analyzer is an integrated artificial lift data acquisition and diagnostic system that allows an operator to maximize oil and gas production and minimize operating expense. It is a computerized instrument for acquiring liquid level data, acoustic pressure transient data, dynamometer data, and motor power/current data. Well productivity, reservoir pressure, overall efficiency, equipment loading and well performance are derived from the combination of measurements of surface pressure, acoustic liquid level, dynamometer, power and pressure transient response.

This portable system is based on a precision analog to digital converter controlled by a notebook computer with Windows-based application. The Well Analyzer acquires, stores, processes, displays and manages the data at the well site to give an immediate analysis of the well’s operating condition. It is compact, rugged and designed for use in any climate.

Senior Tech (now Hamdon Energy Solutions) carries these units in stock and can usually ship within 24 hours.

Features

  • Notebook computer, software, analogue to digital converters and sensors.
  • Total Well Management Software (TWM).
  • Acoustic liquid level test and BHP calculation.
  • Instant determination of percentage foam in the annulus.
  • Dynamometer testing and analysis.
  • Motor/Power current testing.
  • Record and perform pressure transient testing and analysis.
  • Plunger lift tracking.
  • Data can be analyzed and saved to external sources or sent electronically.

Specifications

  • Dustproof Plastic Case
  • Notebook Computer (Windows)
  • Sigma-Delta Analog to Digital Converters
  • Precision Sensors
  • Shielded Cables
  • Total Well Management Software (TWM)
  • Total Weight Complete System – 75 lbs (35 kg)
  • Approximate Dimensions – 20” x 20” x 20” (50.8 cm x 50.8 cm x 50.8 cm)
  • System typically ships in two packages

Plunger Lift Analysis

The Well Analyzer is used during the plunger lift cycle to continually acquire acoustic signals generated as the plunger travels in the tubing, plus acquire pressure signals from the tubing and casing. Key events such as plunger arrival at the liquid level in the tubing and plunger arrival at the bottom of the tubing are identified.

Acoustic Liquid Level Test and BHP Calculation

The Well Analyzer uses a gas gun assembly and pressure transducer. The pressure transducer permits a faster and more accurate determination of the casing pressure buildup rate, which is necessary to determine the casing annulus gas flow rate. The computer utilizes the acoustic data and casing pressure build-up data in conjunction with the well's database to calculate the performance of the well.

Total Well Management Software (TWM)

The Well Analyzer is controlled by a user-friendly software package. The software controls the electronics, acquires data, calculates bottomhole pressures and rod loads, constructs pressure analysis plots and dynamometer cards. For complete details refer to the Total Well Management (TWM) Software section.

Pressure Transient Testing

The Well Analyzer with the pressure transient option can be used to obtain pressure buildup data. The operator programs the Well Analyzer to acquire data points while unattended. The rate may be specified in either shots per hour or shots per log cycle. Numerous diagnostic and analysis plots are available including casing pressure vs. time, liquid level vs. time, bottomhole pressure vs. time, log-log plot with derivative, Homer plot, MDH plot and radial flow type curves. Real time viewing of the plots ensures that the wells are returned to production as soon as the test objectives have been reached.

Motor Power / Current Testing

The power transducer measures both motor power and current. The power data is processed to determine electrical costs, gearbox torque and the distance of counterweight movement necessary to balance the pumping unit. The minimum size motor is recommended. The current data is processed to obtain thermal amp loading. A torque analysis is displayed in addition to the power/current analysis.

Dynamometer Testing

The Well Analyzer is used with dynamometer load cells to gather dynamometer data, which is processed and analyzed to determine the loading and performance of the surface unit, rod string, and the downhole pump. Two dynamometer load cells are available. The polished rod transducer is attached to the polished rod below the carrier bar. Generally, the pumping unit can be operating during the installation of the polished rod transducer. The horseshoe transducer is a very accurate load cell for performing a more complete dynamometer analysis including precise measurement of valve loads and mechanical torque analysis. The accelerometer built into both dynamometers provides a compact, convenient and inexpensive technique to determine polished rod position and surface dynagraph by plotting load versus position. A downhole pump dynagraph is calculated for determination of pump performance. Traveling and standing valve tests can be performed. The horseshoe transducer can be used to obtain a mechanical torque analysis on the gearbox. A permissible load diagram is displayed. Motor current is acquired and displayed for determination of motor loading and gearbox balancing. An optional motor power sensor is available.

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