work over casing scraper

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Casing Scraper

Home > Casing Scraper > work over casing scraper

work over casing scraper

Introduction
The work over casing scraper is composed of centralizers, device and sleeve combination switch in series, with a drill pipe connection at both ends of the thread. It workshop in conjunction with the drilling, grinding, milling, throught wells and other working tools, so that a downhole tool to complete a variety of different jobs, reduce the number of the drill string from the next, greatly improve operational efficiency and reduce mining casts. After drilling, milling, grinding, throught wells job is completed by pitching from wellhead pressure, the scraper blade play. Hydraulic scraper device can work the same as a conventional scraper device. And loop holes connected to scrape beneath the sleeve wall switch is also open at this time can carried out backward circulation flushing.

Features

The work over casing scraper has the following characteristics: in drilling, milling, grinding and other operations, scraper device of the blade is limited in the body’s groove, in the role of the upper centralizer, stretched out less scraper not to scratch on the inner wall of the casing, thus will not affect to normal operation of other tools.
This tool can be used alone, also can be combined with drilling, completion and other tools to become a new more functional tool.
In the multi joint operation, this tool should be used in conjunction with the sliding sleeve switch and the stabilizer, so as to ensure its normal operation.

Benefits
Tools into the well, scraping the wall, close scraper, wash well, for the pulp and other tools in accordance with design is completed, the column will be completed trip scraper, wash well, for the pulp operations.
Using this tool, originally scraper and wash wells drilled from under twice the combined operations, not to mention the string after scraping the wall can be carried out through the flushing and for pulp operations, improve efficiency and a successful completion rate.

Tecnical Date

work over casing scraper DIMENSIONAL DATA
Nominal OD(in)	Weight (ppf)	Connection	Centralizer OD(mm)	Scraper Cage OD (mm)	ID (in)	Length (in)
4-1/2”	11.6-15.1 PPF	2-3/8 REG B*P	3.78’’	4.05’’	0.79	65
5”	11-24.1 PPF	2-3/8 REG B*P	3.94’’	4.56’’	0.79	65
5-1/2”	14-43.1 PPF	2-3/8 REG B*P	4.33’’	5.03’’	1	69
6-5/8”	20-32ppf	3-1/2 REG B*P	5.31’’	5.86	1	70
7”	26-35 lb/ft	3-1/2 REG B*P	5.83’’	6.3’’	1.18’’	74
9-5/8”	43-53.5 lb/ft	NC50 B*P	8.07’’	8.77’’	2.81’’	86
10-3/4”	32.75--85.3	6-5/8 REG B*P	9.17’’	9.76’’	2.81’’	98
13-3/8”	48-54.5-61-68-72	6-5/8 REG B*P	12.32’’	12.83’’	2.81’’	110

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