Optimizing Drilling Operations in the Arkoma Basin: Building on Success

Romo, Louis; Bert, David; Richard, Cliff; Kuwertz, Luke; Koederitz, William; Card, Kirk; Barton, Steven Paul

doi:10.2523/104598-ms

Cited by 1 publication

(1 citation statement)

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“…This geometry is well documented in several prior papers 9,10 . Full round PDC cutters, set with an aggressive backrake, are placed along the entire leading edge of the gauge pad as shown in Figure 5.…”

Section: A) Active Gaugesupporting

confidence: 65%

Results from Systematic Rotary-Steerable Testing with PDC Drill-Bits Depict the Optimal Balance between Stability, Steerability, and Borehole Quality

Jones

Sugiura

Barton³

2008

IADC/SPE Drilling Conference

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There is significant discussion concerning what type of Rotary Steerable System (RSS) provides the best-quality hole, and which key characteristics of the drill bit, along with a particular RSS, will produce the optimal balance between stability and steerability in directional wells. Although some evidence can be drawn from field performance with various tools and customized drill bits, these results can often be inconclusive due to the large variance in factors involved with commercial drilling.This paper describes an extensive series of test wells drilled in a controlled and non-commercial environment, allowing single step changes in both the drill bit features and Rotary Steerable (RS) configurations. The testing is unique in that the specific RSS works in shop-configurable point-the-bit and push-the-bit modes. Between two distinct RSS operation modes, consistency in stiffness, weight, force applying capability, and control systems lead to a direct comparison of bit performance. A unique sensor system, integrated into the specific RSS, provided real-time measurement of near-bit borehole caliper and near-bit stick-slip and vibration. This feature allowed real-time evaluation of bit and BHA stability and borehole quality. After each test run, memory data was retrieved and used for more detailed assessment of bit performance.Drill bit tests were systematically structured in a controlled environment so that the relationship between gauge geometry and configuration could be examined without alteration of the cutting structure. As a result, comparison between stability, dogleg capability, torque and drag, and borehole quality was solely dependent upon gauge length and geometry. Further, the systematic testing led to the conclusion that a specific gauge design related to effective side cutting and gauge stabilization is crucial for optimized RS drilling in both point-the-bit and push-the-bit configurations.

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Section: A) Active Gaugesupporting

confidence: 65%