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Gas Lift Surveillance. What are the keys to success?. Importance of Surveillance. Definitions of Surveillance:. Surveillance: Keeping a close watch. Surveillance: “In terms of production per unit of resource, there is no more profitable activity than well surveillance.

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Gas Lift Surveillance

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Gas lift surveillance

Gas Lift

Surveillance

What are the keys to success?


Gas lift surveillance

Importance of Surveillance

Definitions of Surveillance:

  • Surveillance: Keeping a close watch.

  • Surveillance: “In terms of production per unit of resource, there is no more profitable activity than well surveillance.

  • SIPM Field Surveillance EP88-1350, GA Johnson 1988

  • Surveillance: Surveillance is the starting point for all work after the initial completion.


Gas lift surveillance

Importance of Surveillance

How do we turn information into profit?

BasicSurveillance:

Is everything OK?

What's

the matter?

$

Fix it !

How can we fix it?

Surveillance is aProcess,not a Project


Gas lift surveillance

$

Importance of Surveillance

The key to optimization is predicting the effect of changes.

BasicSurveillance:

Is everything OK?

What's

the matter?

Fix it !

How can we fix it?

Once the process is predictable, surveillance becomesProduction System Optimization.


Gas lift surveillance

Importance of Surveillance

Common problems facing the surveillance process:

  • It is overwhelmed by the design process (big $$)

  • Perceived to be lower priority

  • Lack of immediate visibility

  • Hard work

  • No end point

  • Can always ‘wait until tomorrow’

  • Staff changes

  • Reduced experience level

  • Different requirements field-to-field, well-to-well


Gas lift surveillance

Surveillance Status

You may have seen this consultant tool before.

What is in each box?

Challenge

Support


Gas lift surveillance

Surveillance Status

Stress

Performance

Challenge

Apathy

Complacency

Support


Gas lift surveillance

Surveillance Status

By show of hands, where are your surveillance efforts?

What do you do, if anything, to move to top right?

We can’t do it ourselves. But we're ex-pected to succeed.

We can do it ourselves. And we're ex-pected to succeed.

Challenge

Stress

Performance

We can’t do it ourselves. And we don’t care.

We can do it ourselves. But we don’t care.

Apathy

Complacency

Support


Gas lift surveillance

What can be done

to improve surveillance?


Gas lift surveillance

  • Surveillance can be sub-divided into 4 parts:

    • Data

    • Processes

    • People

    • Tools

  • For each part, what are the key ingredients and secrets for success?


Gas lift surveillance

Surveillance “Boost”

Shell has been using a process called “Produce the Limit” in which external experts challenge teams (asking "why not?") and provide expert assistance in two week concentrated efforts.

We can do it ourselves. And we're ex-pected to succeed.

Challenge

Performance

Support


Gas lift surveillance

Surveillance Strategies

  • Surveillance can be sub-divided into 4 parts:

    • Data

    • Processes

    • People

    • Tools

Improve data quality, especially of lift gas measurements, and collect evidence of instability


Gas lift surveillance

Surveillance Strategies

  • Surveillance can be sub-divided into 4 parts:

    • Data

    • Processes

    • People

    • Tools

Be proactive. Involve field staff, office staff, vendors. Establish meaningful Key Performance Indicators.


Gas lift surveillance

Surveillance Strategies

  • Surveillance can be sub-divided into 4 parts:

    • Data

    • Processes

    • People

    • Tools

Focus on training. Allow people to focus only on performing sur-veillance.


Gas lift surveillance

Surveillance Strategies

  • Surveillance can be sub-divided into 4 parts:

    • Data

    • Processes

    • People

    • Tools

Use SCADA to monitor and control. Use flexible analysis, design, optimization software. Run ample pressure surveys.


Gas lift surveillance

Importance of Surveillance

How to fix the surveillance process:

  • Create ‘champions’

  • Define a simple, understandable process

  • Obtain explicit management support for the process*

  • Concentrate effort to create experts

  • Use those experts to train other parts of organization

  • Formalize the role of ‘well analyst’ in the field

  • Provide useful tools to support the process

  • Provide training

  • Monitor and review performance of process with management

  • Provide adequate rewards for success

  • Improve data quality (e.g. well tests)

  • No more trials!

Mostly taken from Artificial Lift Workshop,

Noordwijkerhout, NL, July, 1997


Gas lift surveillance

Importance of Surveillance

Shell’s Surveillance Strategy:

Support

Process

Champion

Spot

Problems

Convince

management

Implement

Changes

Well Analysts

Create GL

Team

Improve

Data & Systems

Analyze

Wells

Model

Performance

Gas Lift Team

Re-design/re-distribute


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