One-drum additive for oil-based spotting fluids used for pipe freeing
PIPE‐LAX W (EXPORT) stuck‐pipe additive is a liquid one‐drum product for preparing weighted oil‐base spotting fluids. It contains gellants, emulsifiers, wetting agents and filtercake cracking materials. PIPE‐LAX W (EXPORT) spotting fluid can be mixed in diesel oil or mineral oil. Fresh water, seawater or brine may be used for the water portion of the spot.
PIPE‐LAX W (EXPORT) product dehydrates and cracks filtercakes allowing the spotting fluid to penetrate between the drill string and the formation, wetting and lubricating the drill string, reducing the force required to free stuck pipe. PIPE‐LAX W (EXPORT) spots are easily and quickly mixed requiring no special rig or mixing equipment.
Applications
PIPE‐LAX W (EXPORT) stuck‐pipe additive has application in all wells requiring a weighted soak solution to free differentially stuck pipe. PIPE‐LAX W (EXPORT) spotting fluids can be prepared from either diesel oil or mineral oil using any makeup water.
Success in freeing differentially stuck pipe is greatest when the soaking solution is spotted in the minimum amount of time after becoming stuck. A soak solution that can be mixed quickly and spotted will often free the drill string before fishing operations are required. PIPE‐LAX W (EXPORT) stuck‐pipe additive, being a single‐package liquid blend, allows for ease of mixing and quick preparation.
PIPE‐LAX W (EXPORT) spotting fluid gives excellent oil wetting characteristics and is formulated to ensure rapid penetration through the filtercake to the formation. The desired quantity of the PIPE‐LAX W (EXPORT) spotting fluid should be placed in the annulus around the suspected stuck pipe area. PIPE‐LAX W (EXPORT) spotting fluid is designed to withstand contamination by water‐base mud and remain effective.
Advantages
- Simple, single‐drum product does not require other additives
- May be used in diesel oil, crude oil or low‐toxicity oil
- Does not require high shear or long mixing time, allowing quick and effective application
- Can be weighted to any desired density
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