Complete overhaul of design concepts for tool results in unique improvements.
Jim B. Surjaatmadja, Sharlene Lindsay, Pedro Ventosilla, Keith Rispler, Halliburton; Jeff Bezanson, ARC Resources
Hydrajet perforating and fracturing has recently gained popularity in the oilfield industry, especially when used with Coiled Tubing (CT). With CT, the task of placing many cuts at multiple places becomes straightforward and no longer time consuming. However, hydrajetting equipment life has been plagued with rapid failures, resulting in the need for time-consuming and costly tripping out and in the hole for jetting tool replacement.
To reduce or eliminate tripping costs, the hydrajetting tools needed substantial improvement. A mere change of materials or a redesign using concepts that follow the customary models has resulted in insignificant performance improvements. A complete overhaul of the design concepts was required. By doing this, substantial improvements were obtained.
This article discusses unique improvements made to the hydrajetting tools. The new tools address the factors contributing to failures in the past. By taking a fresh perspective of this situation, a performance improvement of 200-300% can be attained. Recent perforating and stimulation experiences in the field demonstrating this are discussed.
INTRODUCTION
Hydrajetting technology has been in use in various industries since the early 1960s.1 From cleaning applications, such as vehicle cleaning or pipeline deposits removal, to cutting applications, such as cutting steel plate in fabrication or cutting rock slabs in quarries, the hydrajet tool has progressed from a simple tool for removing debris to a tool with tremendous power and accuracy. It has advanced from a simple tool with holes to one with carbide inserts or even eductors for injecting abrasives into its high-pressure fluid streams.
In the oil field, hydrajetting has been prevalent in scale removal, offshore wellhead removal, and decommissioning of offshore rig platforms.
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This article was adapted from a professional society paper for which World Oil was granted the right to print one time only. Therefore, to review the article, you should refer to the actual World Oil magazine in which it originally appeared.
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