Alkenes Detection From Drill Bit Metamorphism and Real-Time Geochemical Elemental Analysis on Drill Cuttings Aids Drilling Optimization and Geo-steering in Tight Unconventional Laterals

Carcione, Ettore; Easow, Isaac; Chiniwala, Barzin

doi:10.15530/urtec-2017-2697162

Cited by 6 publications

(2 citation statements)

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“…Compared to large magnetic mass spectrometers, small mass spectrometers are characterized by their ability to perform rapid and dynamic measurements and by their portability. The quadrupole mass spectrometer is one of the most advanced and widely used small mass spectrometers and is very suitable for drilling site detection [19,20]. The helium detector was designed based on the quadrupole mass spectrometer.…”

Section: Mud Gas Detection Principlementioning

confidence: 99%

“…Therefore, in order to accurately measure the continuous vertical helium concentration, real-time detection is required during drilling. Since the mid-1990s, researchers have employed gas chromatography and mass spectrometry to detect gas compositions during geothermal well drilling processes [16][17][18][19][20]. Gas chromatography is utilized for detecting gases such as CO 2 , CH 4 , and H 2 , while mass spectrometry is employed for detecting noble gases.…”

Section: Introductionmentioning

confidence: 99%

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High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms

Lu,

Wang,

Zhu

et al. 2024

Applied Sciences

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Helium is a scarce strategic resource. Currently, all economically valuable helium resources are found in natural gas reservoirs. Owing to helium’s different formation and migration processes compared to natural gas’s, the traditional method of collecting wellhead gas to detect helium concentration may miss helium-rich layers in the vertical direction, which will not only cause the waste of helium resources, but also restrict the study of helium migration and accumulation mechanisms. To solve this problem, we designed a helium detector based on a quadrupole mass spectrometer. Through the combination of different inlet valves, we avoided gas mixing between different vertical layers during the inlet process and realized high-spatial-resolution helium concentration detection. We applied the helium detector to the Dongsheng gas field in the northern Ordos Basin, and the instrumental detection results were consistent with the laboratory analysis results of the wellhead gas, which demonstrated the stability of the helium detector in the field environment and the reliability of the data. Meanwhile, the results showed that the distribution of helium in the plane is highly heterogeneous, and the natural gas dessert layers and the helium dessert layers do not coincide in the vertical direction. In addition, we found a good correlation between helium and hydrogen concentrations. Combining our results with previous data, we propose a hydrogen–helium migration and accumulation model, which enriches the understanding of helium accumulation mechanisms and provides a basis for future helium resource exploration.

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Section: Mud Gas Detection Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms

Lu,

Wang,

Zhu

et al. 2024

Applied Sciences

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LGWO-SVM geological steering identification method for shale gas based on a gamma spectral dataset

Xu¹,

Mao³

et al. 2021

Neural Comput & Applic

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Near Real-Time Monitoring of PDC Bit Condition and Associated NPT Mitigation Using Online Alkene Detection

Regan¹,

Carcione²,

Martocchia³

2018

IADC/SPE Asia Pacific Drilling Technology Conference and Exhibition

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This paper will present an innovative new methodology for realtime monitoring of bit condition – and hence drilling efficiency - using surface measurement of alkene gases artificially created at-bit by the bit as its condition deteriorates. A drop in ROP can be an effect of a variety of causes, often disparate in nature. Can performance be improved by a change in drilling parameters and, if so, for how much further will these parameters remain effective? Is there some form of drilling dysfunction that is resulting in inefficient transfer of energy into drilling action? Is there a change in lithology and, if so, is the bit still appropriate and viable in this new formation? Or is the bit simply approaching the end of its useful life through wear earlier than anticipated, in which case at what point does it become less economic to continue drilling at low ROP and POOH instead? The decision to POOH to change a bit that is perceived to be under-performing can be costly if the bit is found to be in workable condition and the trip is therefore premature. Unnecessary trips are a major source of non-productive time (NPT) so any trusted source of indicative information on bit condition adds valuable context and confidence to operational decision-making. Realtime monitoring of contaminant alkenes provides timely indications to drillers of the degree of bit wear, mitigating invisible lost time (ILT) through excessive prolongation of an ineffectual dulled bit run, and reducing the risk of its potentially catastrophic failure. Field-based case histories are presented supporting the complementary relationship of alkene generation to other indicators of inefficient drilling, how alkene presence can assist in drilling dysfunction diagnosis, and a prototype of a software application based on alkene levels that informs decision-makers of the ‘tipping point’ at which objective commercial factors support pulling a dull bit.

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Alkenes Detection From Drill Bit Metamorphism and Real-Time Geochemical Elemental Analysis on Drill Cuttings Aids Drilling Optimization and Geo-steering in Tight Unconventional Laterals

Cited by 6 publications

References 0 publications

High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms

High-Spatial-Resolution Helium Detection and Its Implications for Helium Accumulation Mechanisms

LGWO-SVM geological steering identification method for shale gas based on a gamma spectral dataset

Near Real-Time Monitoring of PDC Bit Condition and Associated NPT Mitigation Using Online Alkene Detection

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