Solar-Powered ClearWELL™ Devices Drastically Reduce Paraffin ...
Solar-Powered ClearWELL™ Devices Drastically Reduce Paraffin ...
Solar-Powered ClearWELL™ Devices Drastically Reduce Paraffin ...
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REAL RESULTS<br />
<strong>Solar</strong>-<strong>Powered</strong> ClearWELL<br />
<strong>Devices</strong> <strong>Drastically</strong> <strong>Reduce</strong> <strong>Paraffin</strong><br />
Problems and Associated Costs<br />
Objectives<br />
• <strong>Reduce</strong> considerable paraffin buildup in two wells and<br />
associated flowlines, using a cost-effective method. Heavy<br />
paraffin buildup in these shallow-water wells offshore<br />
Louisiana forced the operator to use wireline to cut paraffin<br />
twice weekly, periodically perform hot-oil jobs at a cost of<br />
US$30,000 each, and frequently pig the flowlines.<br />
• Slash expensive offshore maintenance costs associated<br />
with wireline cutting, chemicals, hot-oiling, and flowline pigs.<br />
• Eliminate the use of environmentally unfriendly chemicals.<br />
• Operate the system with solar power.<br />
Results<br />
• A ClearWELL paraffin control device was installed in March<br />
2006 on each well at the surface, without well intervention.<br />
• To date, the ClearWELL devices, powered by solar panels,<br />
have operated continuously, reducing paraffin buildup for<br />
approximately 18 months, and they continue to provide<br />
reliable paraffin control.<br />
• Pig runs on the flowlines after the ClearWELL device<br />
installations showed much less paraffin. As a result, twothirds<br />
of the pig runs were eliminated.<br />
• After installation of the ClearWELL devices, only 52 wireline<br />
wax cuts were needed (as opposed to 184 cuts for the<br />
previous year). Evaluation is ongoing to further lengthen the<br />
intervals between wireline cuts.<br />
• No hot-oil jobs have been needed to achieve the<br />
unprecedented results.<br />
• After installation of the ClearWELL devices, the operator<br />
ended the continuous chemical treatment that had been<br />
needed to maintain production.<br />
Weatherford International Ltd.<br />
515 Post Oak Blvd., Suite 600<br />
Houston, Texas 77027 USA<br />
Tel: 713-693-4000<br />
weatherford.com<br />
Weatherford<br />
Larry Rzeznik<br />
ClearWELL Business Manager<br />
larry.rzeznik@weatherford.com<br />
The ClearWELL device is adaptable to oilfield<br />
conduit ranging from 1 to 48 in. and can be<br />
conveniently powered by an available standard<br />
110V source or by solar energy, as it was for<br />
these two wells.<br />
Location<br />
Offshore Louisiana, USA<br />
Number of Wells<br />
Two<br />
Well Type<br />
Oil producer<br />
Power Source<br />
<strong>Solar</strong><br />
Products/Services<br />
ClearWELL paraffin control device<br />
Weatherford products and services are subject to the Company’s standard<br />
terms and conditions, available on request or at weatherford.com. For more<br />
information contact an authorized Weatherford representative. Unless noted<br />
otherwise, trademarks and service marks herein are the property of<br />
Weatherford. Specifications are subject to change without notice. Weatherford<br />
sells its products and services in accordance with the terms and conditions set<br />
forth in the applicable contract between Weatherford and the client.<br />
© 2008 Weatherford. All rights reserved.<br />
2853.00
REAL RESULTS<br />
Value to Client<br />
• The significant reduction in wireline wax cuts, hot-oil jobs,<br />
and pig runs saved the client an estimated US$367,748<br />
per year.<br />
• <strong>Solar</strong> power capability of the ClearWELL device provided<br />
operational feasibility in an offshore environment.<br />
Weatherford International Ltd.<br />
515 Post Oak Blvd., Suite 600<br />
Houston, Texas 77027 USA<br />
Tel: 713-693-4000<br />
weatherford.com<br />
The ClearWELL device induces a highfrequency<br />
AC signal throughout the conduit<br />
system of a well, regardless of the flow<br />
direction, causing paraffin to precipitate in the<br />
fluid flow and be carried away rather than<br />
adhering to the walls of tubing, flowlines, and<br />
pipelines.<br />
This pig, pulled after a flowline run postinstallation<br />
of the ClearWELL device, showed<br />
considerably less paraffin than the operator had<br />
expected.<br />
Weatherford products and services are subject to the Company’s standard<br />
terms and conditions, available on request or at weatherford.com. For more<br />
information contact an authorized Weatherford representative. Unless noted<br />
otherwise, trademarks and service marks herein are the property of<br />
Weatherford. Specifications are subject to change without notice. Weatherford<br />
sells its products and services in accordance with the terms and conditions set<br />
forth in the applicable contract between Weatherford and the client.<br />
© 2008 Weatherford. All rights reserved.<br />
2853.00
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