Clean-out and straddle setting

Welltec tool used for cleaning and setting a straddle during a 2015 well intervention, shown on a weathered blue surface before deployment.

Total distance tractored

7,497 ft

Max. well depth

9,386 ft

Max. deviation

70º

Max. temperature

162ºF

Max. pressure

300 bar

Background

A client needed a well cleaned in Norway, so the zone below could be perforated and a 50 ft straddle assembly set. The technical solution was chosen due to the Well Cleaner’s capacity to clean in various IDs; in this case 4” and 3.62” in one run.

Furthermore, the Well Stroker’s pushing/pulling force was optimal for ensuring that the seal stack of the straddle assembly was correctly set against the NO-GO.

Operation

The operation took four runs:

Run 1: Cleaning the designated area for packer element and sealing stack using a 218 Well Tractor and Well Cleaner configured with a Well Brush*.

Run 2: Ensuring the seal stack was properly set in real profile/NO-GO with a 318 Well Tractor and 318 Well Stroker.

Run 3: Conveying a 25 ft 2 7/8” gun with a 318 Well Tractor.

Run 4: Ensuring the seal stack entering completely into the seal bore/NO-GO by using a 318

Well Stroker in conjunction with a 318 Well Tractor; the straddle assembly was pushed downwards with about 15,000 lbs pre-set force.

Achievements

Performing this operation on wireline saved this operator approximately USD 1.5 million.

Products applied

Welltec Tractor tool with a metallic body, gold-colored ring, and internal mechanisms for efficient downhole operations.

Well Tractor®

The original tractor with 30 years of experience

Side view of a Welltec tool featuring a metallic body with a gold-colored end piece, designed for precision downhole operations.

Well Stroker®

For actuation

Well Cleaner Wishbone Honer 1

Well Cleaner® WBH

Wishbone Honer

Well Cleaner® Power Suction Tool with a metallic body, gold-colored section, and suction mechanism for effective downhole cleaning.

Well Cleaner®

Power Suction Tool

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