A Quick Guide to Two Broad Categories of Hole Openers

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Hole opener is a drilling tool that is widely used for increasing the size of a well bore. These are broadly categorized as fixed diameter hole openers and under-reamers. Thanks to the fact that most horizontal hole openers do not have a moving part, there is no fear of losing the cones.

Fixed Diameter Hole Openers

Fixed diameter hole openers consist of three milled tooth, PDC, or TCI cutters arranged around a mandrel and mounted on ‘saddles’ using strong retaining pins. The choice of the cutter is done depending upon the type of formation that needs to be cut.

Under-reamers

Under-reamers are mostly used in circumstances where the hole needs to be opened to a diameter larger than its original casing. HDD under-reamer needs to be carefully set before it is actually used in order to make sure that the mudflow through and out of the hole opener is balanced.

In addition to being used for drilling large diameter holes before the process of grouting begins, hole openers are also used for wiping out key seats and drilling oversized holes. Custom-designed hole openers have also been getting extreme popularity for quite some time now. When working with hole openers, do not forget to inspect the shoulder areas, welds, and connections of the equipment routinely in order to extract the best and most out of a hole opener.

Rockpecker is known for manufacturing the best HDD PDC hole openers across the UK. Other than hole openers, we manufacture and deal in high-performance PDC drill bits, TCI drag bits, and PDC hole openers, VRS Reamers as well as Spiral-Bladed Centralisers. We back our designs by various methods to simulate drilling and to make sure our bits deliver optimum performance. For more information about the products we manufacture, feel free to browse through the website or simply reach out to us.