IRP Volume #2
Completing and Servicing Critical Sour Wells
The Wellhead section addresses the installation, operation and
maintenance of wellheads and wellhead related equipment during
initial completions, re-completions, or subsequent production
operations of critical sour gas or oil wells.
The service rig BOP Equipment section addresses the surface BOP
equipment, including BOP stack configuration, manifolding,
accumulator, tubing safety valve, heating of equipment, quality
assurance, and installation and operation. Downhole Equipment is
installed in producing critical sour wells to enhance production
and/or provide additional well security. The downhole equipment
section focuses attention on those procedures, which may affect the
security of the well. The number of tools available is too
diversified to be individually addressed and have been grouped into
commonly recognized categories, such as packers, nipples, safety
valves, etc.
The Tubular Goods section includes recommendations that will
reduce the probability of an uncontrolled flow of H2S
in a critical sour well. A tubing failure alone will not directly
result in an uncontrolled flow, but will result in a workover
operation. During this operation, the risk of an uncontrolled flow
increases, and is the focus of the recommendations.
The Fluids and Circulating System section addresses the minimum
acceptable standards for equipment and completion/servicing fluids
for well control and fluid handling on critical sour wells.
The Electrical Wireline (braided wireline) operations section
includes recommendations regarding the equipment integrity during
completing/servicing operations, which forms an integral part of
the pressure control equipment directly attached to the BOP stack
or wellhead.
Key issues relating to Slickline equipment requirements include
rigging in procedures, pressure testing, equipment servicing and
reporting, technical information relating to mechanical properties
and strengths, and operational considerations associated with the
equipment.
A Quality Control program must be implemented to ensure that the
pressure control equipment utilized during completing and servicing
operations is suitable for the intended service, and addresses
non-API equipment as well as API equipment. The Elastomer Guideline
Selection IRP is intended to assist well operators in selecting
elastomers used for well pressure seals, and addresses service and
environmental conditions on seal material. Plastic and metal-
to-metal seals are not included in this IRP section.
The Safety section details minimum standards and practices for
completing and servicing operations with the wellhead installed or
wellhead removed.
The Suspension Practices section outlines suspension methods for
both newly drilled wells and completed wells to preserve the
integrity of the wellbore and to maintain downhole equipment,
tubular goods, and wellhead equipment to permit safe re-entry of a
suspended critical sour well.
The Wellsite Personnel Training section provides guidelines with
regard to training and experience levels for personnel working on
completing/servicing critical sour wells to carry out each level of
operation in a safe, competent manner.
Developer: DACC
Sponsor Organization: CAPP
Current Status: Sanctioned April
2006
Other Information: Next review
2011
This IRP has been officially sanctioned by all parties and is in
final form.
Enform welcomes comments at any time on any of these documents.
Comments are considered on the basis of clarity, intent, accuracy,
or omissions. ALL comments are passed on to the committee chair or
held until the next scheduled review, as appropriate.
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Available Formats:
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Servicing Critical Sour Wells.
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269 pages - Sanctioned 2007 - Cost $20.00
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