CLEARMAX™ Wellbore Cleaning Services

CLEARMAX™
Wellbore Cleaning Services
Drilling
Evaluation
Completion
Production
Wellbore cleaning services
Chemicals
Hydraulic systems
Intervention
Mechanical tools
Engineering a clearer path to optimize
your completion and maximize production
Engineered Clean™
Wellbore Cleaning Solutions
Weatherford’s CLEARMAX wellbore cleaning services provide a clear
path for production with chemical, mechanical and hydraulic technologies
that reduce operational costs, eliminate formation damage, and protect
personnel and the environment.
With our CLEARMAX wellbore cleaning services, you can be confident that
your well has been Engineered Clean™.
Whether drilling a complex well in
the middle of the desert or a well in
6,000 ft (1,829 m) of water, a critical
area of focus is debris, such as
remmants of drilling fluid, lingering
in the wellbore—ultimately having a
negative impact on the completion
of the well.
It is recognized that wellbore
debris is blamed for a third of
all failed completions. Debris
depresses your financial bottom
line through remedial workover
trips and downhole equipment
failure. Debris risks plugging the
formation and crippling production.
Weatherford’s new CLEARMAX
wellbore cleaning services
provide you with the ability to
safely and effectively remove
wellbore debris, eliminating costly
workovers and potential formation
impairment, as well as validating an
Engineered Clean wellbore.
Debris was recovered in the
CLEARMAX Retriever.
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© 2011 Weatherford. All rights reserved.
CLEARMAX™ Wellbore Cleaning Services
The CLEARMAX Advantage
Our three-pronged approach of combining
chemicals, mechanical tools and hydraulic
technologies helps
• minimize nonproductive time (NPT),
• decrease the number of trips,
• lower operational costs,
• reduce health, safety and
environmental (HSE) risks,
• decrease formation damage,
• produce wells more efficiently,
• increase reservoir production confidence.
Tools are only as effective as the people using them,
and no one knows the mechanical side of downhole
operations better than Weatherford.
Quality is the core focus of the CLEARMAX wellbore
service. To maintain a consistent, cost‑effective,
high-quality product, manufacturing ownership
is critical. With 160 mechanical and 8 chemical
certified manufacturing facilities throughout the world,
Weatherford is committed to delivering a premium
product for your operation.
As acknowledged authorities on engineering and
applying wireline, thru‑tubing, fishing, and other
intervention and flow-control services, our personnel
are precisely trained in how to get the most out of
your well. That well-honed and field-tested expertise
also integrates seamlessly into the CLEARMAX
cleaning services. From planning a cleanup operation
to execution, our highly trained and experienced
personnel deliver carefully executed wellbore cleanups.
© 2011 Weatherford. All rights reserved.
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The Clear Choice
Weatherford’s CLEARMAX™ portfolio is a prime component of our intervention services offering.
Chemical Solutions
Our Engineered Chemistry® product offering is the foundation for the
CLEARMAX line of wellbore chemical-cleaning solutions. Whether you are
preparing for a cased-hole or openhole completion, our fluid experts deliver
a wide range of high-performing and HSE-compliant drilling fluid cleanup
solutions, including filter-cake breakers, water-wetting surfactants, and
oil‑based mud thinners and pipe-dope removal solvents.
Our specialists customize spacer trains for your specific well characteristics,
taking into consideration volume, chemical concentration, contamination
simulations and viscosity requirements to provide a smooth and complete
transition from the drilling to the completion fluid.
Mechanical Solutions
Regardless of the cleaning scenario that your
wellbore presents, the CLEARMAX system offers
the mechanical solution to meet your specific
requirements. Our proprietary line of casingcleaning, debris-extraction, circulation and wellbore
integrity‑validation management tools are designed
for the most challenging and complex of wells.
Additionally as with our chemical offerings, we
design, manufacture and maintain the tools
in-house, ensuring reliability and the option to
customize treatment tools to meet the client’s
particular priorities, no matter how unique.
Hydraulic Solutions
Our Engineered Clean™ hydraulic software is a vital
component of all debris management operations. It ensures
that our chemical and mechanical solutions are optimized
to your operation. With our Engineered Clean™ modeling,
our CLEARMAX design engineers can simulate all wellbore
cleaning design parameters to include torque-and-drag
analysis, equivalent circulation density (ECD), pump rates and
downhole/surface pressures. This process ensures that the
chemical and mechanical recommendations work together to
achieve your operational key performance indicators (KPIs).
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© 2011 Weatherford. All rights reserved.
CLEARMAX™ Wellbore Cleaning Services
The CLEARMAX System is…
…your cost (NPT) controller.
Our CLEARMAX wellbore cleaning services help you recoup your investment much
faster by eliminating multiple trips during the cleaning process.
Our unique and integrated approach also extends to engineering a bottomhole assembly
that enables you to execute simultaneous operations. This method could include drilling
out cement to establish a new target plugged-back total depth (PBTD)—all in the same
cleaning trip, saving even more time and rig costs.
…your production protector.
The benefits of drilling efficiently and safely to total depth are overshadowed when
residual debris leaves impaired formation permeability and reduced reservoir access.
The CLEARMAX system, with its precisely orchestrated chemical, mechanical and
hydraulic packages, ensures that your reservoir begins production with maximum
productivity—today and tomorrow.
We verify that the CLEARMAX
cleaning process has removed
all the debris from the wellbore
by filtering the final wellbore
fluid through the CLEARMAX
Retriever—a drillpipe‑conveyed,
downhole-filtration,
debris‑extraction tool.
…your safety securer.
When you can eliminate trips and makeup connections, you also reduce the risks of
accidents on the rig floor. Combine that with our nonrotational tools, and you avoid any
casing damage when drilling out cement or plugs—ultimately protecting well-integrity and
possibly even preventing well-control incidents down the road.
Our hydraulic programs are modeled to make certain that the flow pattern is well within
the operational limits of the rig, eliminating the chances of critical equipment failures
caused by unexpected pressure surges.
The HSE safeguards that are intrinsic to the CLEARMAX system
extend to our fluid formulations. All of our wellbore cleanup chemical
packages are engineered to be nonhazardous and nonflammable.
They contain no benzene, toluene, xylene or other chemicals that can
be hazardous to rig personnel or the environment.
Another safety advantage is the CLEARMAX liner-top test packer
(LTTP), which enables the testing (negative) of a liner overlap and
shoe track on the same run as the main wellbore clean-up without
setting potentially damaging weight on the liner overlap. Not only
does this tool eliminate a dedicated run, but more importantly, the
LTTP validates the wellbore integrity. This validation assures that
the wellbore can be safely displaced to lower density completion
fluid. This technology is run with Weatherford’s MAX-Blade™ tool to
scrape the packer-setting area, greatly increasing the probability of a
good annular packer seal.
MAX-Brush™ Tool
MAX-Force™ tool
MAX-Blade tool
CLEARMAX Liner-Top Test Packer
CLEARMAX Retriever
With the CLEARMAX system, the environment also wins because
cleaning spacers designed for one-pass displacements means that
fewer chemicals are used, in turn reducing the waste volume that
must be processed.
© 2011 Weatherford. All rights reserved.
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Clear Results
Weatherford’s CLEARMAX™ wellbore cleaning services can be integrated into everyday well construction operations,
improving operational efficiency and safety. Below are some examples of the benefits of the CLEARMAX system when
integrated into other drilling applications.
MAX-Force™ Magnets Remove Steel Cuttings from Offshore Well, Providing an Unobstructed
Wellbore for Sidetracking Operations
An operator working in Malaysia called on our CLEARMAX wellbore cleaning
services to capture metal cuttings produced from cutting a window in 9 5/8-in. casing
after setting the whipstock in an offshore well. The objective was to eliminate the
accumulation of cuttings at the wellhead, which could have caused subsequent
interference with the correct operation of the blowout preventers (BOPs).
After cutting the casing exit window, we deployed three MAX-Force string magnets,
which collected 55 lb (25 kg) of debris during the reaming trip, including some large
debris in excess of 8 in. (20 cm) in diameter.
The carrying capacity of the MAX-Force magnets enabled the operator to capture
large volumes of cuttings debris, eliminating the need for additional intervention operations and enabling
the operator to perform a sidetrack drilling operation on time, without additional cost.
MAX-Blade™ Casing Scraper Performs Wellbore Cleaning in Single Trip, Saving Rig Time
Our CLEARMAX wellbore cleaning services performed a successful cleanout
trip in an onshore workover well in Kuwait, ensuring that the wellbore was clean
and free of debris for running an expandable liner system.
Our MAX-Blade casing scraper was run to 8,855 ft (2,699 m) total vertical
depth and performed a successful cleanout trip of the wellbore—scraping
and cleaning the casing behind the milling bottomhole assembly. We then
successfully installed and tested our MetalSkin® cased-hole expandable liner.
Running the MAX-Blade casing scraper during the mill run saved the operator from making an additional trip
downhole, ultimately saving significant rig time and the associated expenses.
MAX-Strata™ Tool Saves Operator US$2Million in Rig Time Offshore West Africa
An operator offshore West Africa was experiencing significant mud cleanout problems
in the riser in development wells drilled at water depths of 3,000 ft (914 m). Brine
was channeling through the drilling fluid and not displacing properly. This occurrence
was made worse by the low temperatures on the seabed viscosifying the fluid. A
Weatherford design team’s solution was to create a physical barrier between the
two fluids. Weatherford developed the MAX‑Strata riser wiper and fluid barrier
tool as a solution to the channeling problem. The MAX‑Strata tool achieved 100
percent separation on the first run, while ensuring a clean riser surface, ultimately
saving the operator approximately 3 days of rig time on each well, while achieving
uncompromised production rates.
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© 2011 Weatherford. All rights reserved.
Engineered Clean
™
CLEARMAX™ Wellbore Cleaning Services
Engineered Clean™
Our CLEARMAX wellbore cleaning services are a major component of
our intervention offerings. For more information about how to keep your
wellbores clean, contact an authorized Weatherford representative or
visit weatherford.com/clearmax.
weatherford.com
© 2011 Weatherford. All rights reserved.
6229.00
Weatherford products and services are subject to the Company’s standard terms and conditions, available on request or at weatherford.com. For more information contact an authorized Weatherford representative. Unless noted
otherwise, trademarks and service marks herein are the property of Weatherford and may be registered in the United States and/or other countries. Weatherford products named herein may be protected by one or more U.S.
and/or foreign patents. For more information, contact patents@weatherford.com. Specifications are subject to change without notice. Weatherford sells its products and services in accordance with the terms and conditions set
forth in the applicable contract between Weatherford and the client.