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Innovating While Drilling

Churchill Drilling Tools launches dartless version of self-filling float

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Churchill Drilling Tools has introduced a dartless version of its self-filling float. The original dart-activated version allows the string to self-fill while running in hole and can reduce trip time by 30% to 50% compared with regular floats, according to the company. The float remains dormant while it’s run in hole and is later activated with a dart. In late 2017, the company launched the SFF Trigger, a dartless version of the self-filling float. Like the original self-filling float, the SFF Trigger remains dormant while it’s run in hole. However, a new automatic activation system is triggered when the float reaches a preset depth and pressure. In this video from the 2018 SPE/IADC Middle East Drilling Technology Conference in Abu Dhabi, Nicholas Kjaer, General Manager-Middle East for Churchill Drilling Tools, explains how the automatic activation system works, as well as the benefits of dartless activation...

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GE launches industry’s first optimizing standalone controller

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GE Power’s Automation & Controls business announced the release of dual redundancy capability on its PACSystems RX3i CPE400 outcome optimizing controller. Building on GE’s controls leadership and expertise in deploying mission-critical solutions, the CPE400 is designed to function in rugged, high-temperature environments where a compact footprint with high-performance is essential....

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LWD sonic sensor technology can complement wireline CBL evaluation to validate top of cement

Figure 3: The same waveforms in Figure 2 are presented, along with a representative waveform shown as the green trace, which was recorded in the open-hole environment from the same closest receiver to the transmitter tool arrangement.

Evaluation of cement placement is an important part of the majority of deepwater wells. Cement placement confirmation is a critical step following the cementing operation. More than one technique can be used to provide information about the top of cement (TOC) and the depth interval of a good bond between the formation and the casing. Determining the length of annular cement coverage, which is an indication of correct cement placement, is useful knowledge before drilling and/or completion operations can proceed...

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