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    Section 6, Well Test Planning

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    hammami
    The document discusses the planning process for an onshore well test, including determining test objectives, conducting a rig visit and survey, developing piping and instrumentation diagrams (P&IDs) and equipment layouts, preparing an equipment shipping list, ensuring documents are up to date, and performing an external site inspection prior to rig-up. Key steps include agreeing test objectives with stakeholders, evaluating the rig and boom capacity, mobilizing certified equipment, and having processes for documenting any necessary changes that arise during the operation.

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    Section 6, Well Test Planning

    Uploaded by

    hammami
    138 views10 pages
    The document discusses the planning process for an onshore well test, including determining test objectives, conducting a rig visit and survey, developing piping and instrumentation diagrams (P&IDs) and equipment layouts, preparing an equipment shipping list, ensuring documents are up to date, and performing an external site inspection prior to rig-up. Key steps include agreeing test objectives with stakeholders, evaluating the rig and boom capacity, mobilizing certified equipment, and having processes for documenting any necessary changes that arise during the operation.

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    Well Test Planning

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    The document discusses the planning process for an onshore well test, including determining test objectives, conducting a rig visit and survey, developing piping and instrumentation diagrams (P&IDs) and equipment layouts, preparing an equipment shipping list, ensuring documents are up to date, and performing an external site inspection prior to rig-up. Key steps include agreeing test objectives with stakeholders, evaluating the rig and boom capacity, mobilizing certified equipment, and having processes for documenting any necessary changes that arise during the operation.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    138 views10 pages

    Section 6, Well Test Planning

    Uploaded by

    hammami
    The document discusses the planning process for an onshore well test, including determining test objectives, conducting a rig visit and survey, developing piping and instrumentation diagrams (P&IDs) and equipment layouts, preparing an equipment shipping list, ensuring documents are up to date, and performing an external site inspection prior to rig-up. Key steps include agreeing test objectives with stakeholders, evaluating the rig and boom capacity, mobilizing certified equipment, and having processes for documenting any necessary changes that arise during the operation.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 10
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    The key takeaways are that thorough planning is essential for safe and successful well testing. Planning should start well in advance and involve considering objectives, equipment requirements, rig inspections, and safety.

    A rig visit by a senior operator should be carried out prior to equipment leaving for location to gather information about deck layout, equipment positioning, pipe and electrical connections required.

    Documents like the client questionnaire, rig survey report, boom survey, shipping list, job planning checklist, and document change request should be downloaded from the portal to ensure the most up to date versions are used.

    Well Test Manual 1

    Section 6

    Well Test Planning

    Table of Contents
    Introduction……………………………………………………………………… 6 - 2
    Objectives………………………………………………………………………… 6 - 2
    Introduction to Well Test Planning............................................................... 6 - 3
    Test Objectives ………………………………………………………………… 6 - 4
    P&ID and Layout……………………………………………………………… 6 - 8
    Equipment Mobilization………...……………………………………………… 6 - 9
    Document Changes…………………………………………………………… 6 - 10
    External Site Inspection………………………………………………………. 6 – 11

    The following documents should be downloaded from the portal to ensure the most
    up to date version is used.

    Appendices
    Client Questionnaire WT AD 010 – Rev 11
    Rig Survey Report WT AD 011 – Rev 6
    Boom Survey WT AD 025 – Rev 7
    Shipping List UK AD 1501C – Rev 36
    Job Planning Checklist WT AD 016 – Rev 4
    Document Change Request WT AD 007 – Rev 3
    External Worksite Inspection HSE/UK/FRM/008.1-1 Rev 4
    Well Test Manual 1

    Introduction
    The section contains information on the onshore processes required to ensure a

    successful operation is achieved

    Objectives
    After completing this section, you should be able to

    • Know the objectives you require to carry out a Well Test


    • Know why you carry out a Rig Visit
    • Know the different types of Rigs

    Revision 2. July 2010 2 Well Test Planning


    Well Test Manual 1

    WELL TEST PLANNING

    INTRODUCTION
    Preparation is the key to a safe and successful well test. Since it is a long and
    complex process, involving the consideration of many small details, planning may
    take longer than anticipated. Therefore, planning should commence well in advance,
    especially for a complex critical test involving high pressures and temperatures, or
    where stimulation operations are to be an integral part of the test.
    The planning of such a test might be started a year in advance to allow for the lead
    time on special test equipment and rig modifications, if required. However, for a
    routine well test, planning should commence approximately 3 months before
    finalising the test program which should be issued some 6 weeks before the potential
    reservoir section is drilled to allow time for comment by partners of other interested
    parties.

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    Well Test Manual 1

    TEST OBJECTIVES
    Client Questionnaire
    This form is sent to the Client and planning will commence on receipt of this
    document.

    Well testing is an expensive and potentially risky operation and should therefore only
    be conducted for data, which is essential. The ground rules for well testing should
    be as follows:

    a) Testing should not be performed until it is clearly justified to do so.


    b) If testing is justified, it should be performed in the simplest possible
    manner; if wire line or coiled tubing are to be run the risk of equipment
    failures are potentially much higher.
    c) Testing should be conducted in a way which will make the formation
    analysis as simple as possible; this minimized assumptions and the
    hence complexity of the reservoir model.
    By adopting these rules, the test design engineer should not be seen to be
    negative; but working to provide the data which the operation company needs
    to obtain (as opposed to “nice to have”) in a cost effective manner.
    The test objectives must be agreed, by those who will utilize the results and
    who will conduct the test, before the test program is prepared. The Petroleum
    Engineer (PE) should communicate with the geologists and reservoir
    engineers about the information required and should emphasize the costs and
    risks involved and any other means of obtaining such information.
    Such inter-disciplinary discussions should be formalized by a meeting (or
    meetings) where these objectives are agreed and fixed.

    The usual objectives of an exploration well test are to:


    • Conduct the testing in a safe and efficient manner
    • Determine the nature of the formation fluids
    • Measure reservoir pressure and temperature as accurately as possible
    • Determine reservoir transmissibility (kh product) and skin damage
    • Determine well productivity (and/or injectivity)
    • Determine formation characteristics
    Evaluate boundary effects.

    Attached in the Appendices is a typical example of a Client Questionnaire

    Revision 2. July 2010 4 Well Test Planning


    Well Test Manual 1

    Well testing is an expensive and potentially risky operation and should therefore only
    be conducted for data, which is essential. The ground rules for well testing should
    be as follows:

    Evaluation – Rig Visit

    A rig visit by a Senior Operator should be carried out prior to the equipment leaving
    for location. Here is some of the information required to be noted on the Rig Visit
    Form.

    • Deck spacing
    • Deck loading
    • Crane usage
    • Positioning of equipment
    • Connections/Crossovers required
    • Pipe tally (enough pipe to connect up the equipment + 20%
    • Electrical connections and load
    • Air supply rig and compressors
    • Communication
    • Names and phone numbers of relevant persons (OIM, Tool Pusher, Radio
    Operator, Electrician, Company Man’s Office etc).

    Attached in the Appendices is a typical example of an Expro Rig Survey

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    Well Test Manual 1

    The other type of Survey carried out is the Boom Survey

    Attached in the Appendices is a typical example of a Boom Survey

    After the rig survey has been carried out then a drawing of the rig-up is produced
    and a detailed list of equipment required to carry out the job.

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    Well Test Manual 1

    Drawing of the rig up after Rig Visit

    Revision 2. July 2010 7 Well Test Planning


    Well Test Manual 1

    P&ID

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    Well Test Manual 1

    Equipment Mobilization

    At this point, all the equipment is identified and checked for maintenance and
    certification. Once this has been established then a shipping list has to be prepared.

    Well Test Shipping List

    Attached in the Appendices is a typical example of a Well Test Shipping List

    Job Planning Checklist


    This Checklist will be completed by Operations Staff, prior to Load Out for location.

    Attached in the Appendices is a typical example of a Job Planning Checklist

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    Well Test Manual 1

    Document Change Sheet


    On arrival offshore should any changes to the original P&ID or Job Planning be
    required, this form must be completed and sent in for approval.

    Attached in the Appendices is a typical example of a Document Change Sheet

    External Site Inspection for Worksite


    Before commencement of offloading and Rig-up and external site inspection must be
    completed and then regular inspection to be carried out for the duration of the job.

    Attached in the Appendices is a typical example of a External Site Inspection


    for Worksite Sheet

    Revision 2. July 2010 10 Well Test Planning

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