... wipeout failure can cause additional bottomhole assembly (BHA) trips, which can cost operators millions of dollars. Excessive reamer shock and vibration are leading causes of reamer wipeout; therefore, careful monitoring of reamer vibration is important in mitigating such a risk. Currently, downhole...

... to bending or even bulking failure. Therefore, analyzing the drillstring whirl characteristics considering multidirectional coupling effects, combined with field conditions, is a key issue and research hotspot. In this paper, considering the relationships between axial, torsional, and lateral vibrations...

... performance of chord-edge cutter mini-bit. The data show that the chord-edge cutter is more suitable for drilling hard-plastic rocks. It also reveals that the higher the RPM, the lower the stick/slip vibration, but the RPM above a certain value will lead to an increase in lateral vibration. ROP and weight...

...Mauro Caresta Summary This work presents a method to move a vertical drillstring off-bottom in a given time without exciting the torsional vibrations. The control algorithm was originally developed for robots with flexible arms, and it is here applied to a long drillstring. The control strategy...

...Shilin Chen; John Wisinger; Brad Dunbar; Chris Propes Summary In this paper, we provide some new insights into stick/slip vibration in drilling with polycrystalline diamond compact (PDC) bits. Fifty‐six field runs under various drilling conditions were collected with the help of on‐bit vibration...

... spectrogram BHA Exhibition bit box sensor hfto frequency natural frequency lower mandrel stick slip directional drilling systems and equipment Upstream Oil & Gas oscillation HFTO vibration december 2020 accelerometer peak tangential acceleration SPE Drilling artificial intelligence srh...

... Intelligence lateral hole section slimhole WOB drilling operation transition pressure loss drillpipe RPM Drilling SPE Drilling slimhole well vibration Slimhole Drilling ROP critical speed range hole size performance improvement december 2019 drilling performance improvement...

... incidents that occurred while drilling the horizontal section of the well in the Granite Wash. While the sub is primarily intended to be a geosteering tool, its high–frequency measurement capability also makes it beneficial for vibration logging. The logging frequency is not as high as some dedicated...

... wellbore Drilling Equipment frequency SPE Drilling torsional natural frequency Drilling Assembly june 2019 lateral natural frequency Artificial Intelligence Upstream Oil & Gas variation BHA directional performance vibration drillstring design drilling operation calculation dynamic...

... such example is depth-of-cut (DOC)-control technology. Introduced in the early 2000s, this technology emerged as an effective means to mitigate torsional vibrations by managing bit aggressiveness. Today, however, the drilling industry faces the task of drilling diverse sections of the well with a single bit...

...Adam Bowler; Richard Harmer; Lojini Logesparan; Junichi Sugiura; Ben Jeffryes; Maja Ignova Summary The oil-and-gas industry has become increasingly interested in drilling dynamics and vibration as causes of drilling inefficiency and reduced drilling performance. Generally, drillstring vibration...

... vibration hookload june 2016 real time system frequency SSSI stick slip dssi SPE Drilling During the past 10 years, the drilling industry has seen a dramatic shift in the type of wells it has had to construct. Significant improvements in directional technology and well-completion methods...

...J. K. Wilson; G.. Heisig Summary Inducing vibrations while drilling is a relatively new concept that shows promise in directional applications. Instigating motion of the drillstring, particularly in the sections lying on the low-side of the wellbore, can lead to substantial improvements in managing...

...H.. Westermann; I.. Gorelik; J.. Rudat; Christoph Moritz; M.. Neubauer; J.. Wallaschek; O.. Höhn Summary The investigation of oilwell-drillstring dynamics is essential for understanding the complex behavior of downhole-vibration phenomena. Experimental test rigs allow a reproduction of critical...

...Deniz Ertas; Jeffrey R. Bailey; Lei Wang; Paul E. Pastusek Summary Vibrations have been identified as one of the most-frequent and persistent performance limiters by limiting weight on bit, rate of penetration, or borehole quality even when they may be low enough not to cause damage to downhole...

... contributed to this step change in drilling performance. In addition, evolved bit and bottomhole-assembly (BHA) design, efficient operating parameters, improved hydraulics, and vibration-prediction modeling have all aided in the success of these runs. Although this emerging new trend reduces drilling times...

... on the same string. This approach will generate an evolution in the service industry with regard to providing a packaged product that has been vibrationally qualified. Delivery of the desired well path is now well-developed for several vendors, and it is expected that vibration stability and borehole quality...

... operation at some locations along the drillstring during slide drilling and liner running but with bending stresses at an acceptable level. However, in rotary drilling, buckling should be avoided because it will create high vibrations. In this case study, the effect of drillstring dynamics is not considered...

.... But is whirl still the major cause of PDC bit damage in conventional rotary applications? This paper reports on a recent field study in which downhole vibrations were measured by use of a newly available in-bit vibration-monitoring device. The focus of this study was to understand the primary source of bit...

...Yezid Arevalo; Ashley Fernandes Summary Vibration measurements have traditionally targeted the improvement of downhole-tool reliability. This paper targets the effects of vibration on the complete drillstring. Failures associated with drillstring vibration continue to happen despite...