Articles & Publications


A practical approach is presented for comparing the actual path of a directional well with the original well plan.

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Casing and liner running and cementing operations in high angle wells with long open hole sections pose seemingly diverse sets of challenges irrespective of location and drilling environment. The fluvial loose formations predominant in the arctic region of Russia and most parts of Siberia provides more than adequate tests and constraints to modelling, understanding and accommodating the risks associated with such operations as this. This is further complicated with no reliable nor consistent information regarding representative geo-mechanics models or failure plains within the region.

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In traditional drilling, multiple problems often become apparent in the wellbore, including tight spots, swelling shale or collapse. Back-reaming the wellbore solves these problems but also takes up valuable rig time. Geopro’s MRS stabilized accentuated reamer (STAR) features a positive displacement motor that continuously reams and back-reams the wellbore as soon as circulation starts

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