Service introduction

Target on different well conditions and equipments,                       provide high efficiency jarring service which is safer,                       more effective and excellent quality via multiple plans                       for jarring and jam-releasing.

Application scope

Service performance

Serviced over 100 wells in China offshore oilfield.

Service introduction

For ESP fault falling, power cable, cable shield and other small pieces falling, series of special tools have been adopted, and milling and fishing conducted all together. Thus unconventional debris fishing service could be achieved in a very short time.

Application scope

Service performance

Applied over 20 wells in China offshore oilfield.

Application example.

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Service introduction

Normal fishing tool couldn’t deal the off-center fish because of hard to engage. COSL provide off-center fishing service by using special manufactured off-center centralizer to carry out reengage and fishing job.

Application scope

Application example

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Service introduction

By using purpose-built circulation subs, sand washing operation could be continuously without stop pump while making up joints or stands. So the risk of pipe stuck can be great reduced and sand washing service can be more effective and safer.

Application scope

Service performance

Applied more than 10 wells in China offshore oilfield, washing sand up to 300m in one trip.

Service introduction

COSL can fish out the failure completion string and re-connecting according the new completion design, which could avoid the fishing job of entire completion string and meet the requirements of production, reduce the risks and costs.

Application scope

Service performance

Applied 5 wells in China offshore oilfield with fully content of operation Standard and good seal performance.