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Tubing/Casing Patches

Tubing Patch

Oildata's Tubing/Casing Patches, designed from proven and patented technology, provide a heavy-duty, permanent seal over splits, holes, or perforations in tubing and casing and are ideal for water shut off. These patches are run on electric wireline, tubing, or coil tubing and set with a pressure setting tool (electrical, mechanical, or hydraulic).

Their large bores assure easy passage of tools and equipment and present little restriction to fluid flow. It is also possible to run certain bridge plugs through and set below various sizes of these patches. Patches can be customized for most well applications including premium alloys, restrictions, and geothermal wells.

The Tubing/Casing Patch consists of three basic components: a top soft metal element with a rubber seal; a tubular extension; and, a bottom soft metal element with a rubber seal. Various patch lengths can be obtained by adding tubular extensions. Only the top and bottom elements are swagged outward during the setting process. The tubular extension is not swagged.

The patches are set with a pressure setting tool which exerts a pushing force on the top tapered metal swage, and a pulling force on the bottom tapered metal swage. Both swages are driven into the soft metal sealing elements which expand into metal to metal sealing contact with the casing bore. At a predetermined force, a calibrated weak point shears and the setting process ceases. A collapsible setting collet located in the bottom swage retracts and allows the pressure setting tool and setting equipment to be retrieved. The damaged interval is now isolated by a full circle, metal to metal and rubber seal.

The use of a casing scraper is recommended before patch installation to rid the interval of foreign matter. Also recommended is the use of the Multi-Finger Imaging Tool (MFI) to provide an accurate record of casing I.D. and condition.

If you are interested in this service, please fill out our Service Request Form, and we will get back to you promptly.

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Case Histories

Oildata was the first company to successfully record a horizontal well Production Log on an ExxonMobil Well in West Africa

– Ubit 71, Ubit 75, 1995

The first service company to log a memory log on a short Radius horizontal well in Africa.

– Ashland, 1997

Oildata was the first company to design and install an open-close-open straddle packer system to isolate a high pressure gas zone while simultaneously permitting the production of oil from a deeper horizon.

– ChevronTexaco, 1998, 1999

Oildata was the first company to deploy a wireline tractor in a horizontal well in Nigeria to acquire reservoir data without coiled tubing or pipe conveyed logging equipment.

– Shell, 1999

Oildata successfully re-established oil production from the abandoned Salt pond Marginal field, offshore Ghana.

– SOPC/GNPC, 2002

Oildata has performed 100% of ChevronTexaco's non-rig well interventions and data acquisition requirements in Nigeria since 1996

– ChevronTexaco, 1996

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