Scheme design and performance analysis of thin-walled pressure-retaining coring tools for seafloor drills in the deep-sea operating environment

Wang, Jialiang; Sun, Yang; Qian, Dilei; Wan, Buyan; Tang, Yonghui; Peng, Fenfei

doi:10.1016/j.petrol.2021.109790

Cited by 14 publications

(2 citation statements)

References 18 publications

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“…In general, pressure coring tools have been deployed successfully over the past few decades. So far, the pressure samplers with good performance in application include pressure core barrels (PCBs) in the Deep Sea Drilling Project (DSDP), the pressure core sampler (PCS) in the Ocean Drilling Project (ODP), the Fugro pressure corer (FPC)/HYACE rotary pressure corer (HRC) developed by EU-funded HYACE/HYACINTH programs, , and the pressure–temperature core sampler (PTCS) and hybrid PCS developed by Japan . The parameters and using records of different pressure corers are shown in Table .…”

Section: Introductionmentioning

confidence: 99%

Design and Experimental Study of an Improved Pressure Core Sampler for Marine Gas Hydrates

Li,

Zhang,

et al. 2024

ACS Omega

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A pressure core sampler (PCS) is considered an effective tool to retrieve marine gas hydrate cores from hydratebearing sediments. However, according to the sampling application statistics, the success rate of pressure coring changed from 30% to 85% in different drilling wells. Such severe fluctuation will cause huge uncertainty in the practical application of technology and economic benefits. Herein, we present a new PCS designed to improve pressure-retaining reliability. The work principle, design and calculations, and structure composition were described. Through the laboratory tests and drilling experiments, the maximum holding pressure in the pressure chamber was 32.1 MPa, and the pressure loss rates of holding pressure after 2 h changed from 1.96% to 2.46%. The maximum temperature-rising value in the pressure chamber was 0.96 °C under a temperature of 23.5 °C in 2 h. Furthermore, the success rate of the pressure core reached 87.5% and the core recovery was not less than 80%, which were verified by 8 pressure core runs in three different offshore wells. Therefore, we conclude that this new and improved PCS has great application value in gas hydrate exploration that seeks to recover more accurate cores in situ, especially in the silt and sand layers.

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Section: Introductionmentioning

confidence: 99%

Design and Experimental Study of an Improved Pressure Core Sampler for Marine Gas Hydrates

Li,

Zhang,

et al. 2024

ACS Omega

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“…Up to now, many researchers have conducted research on the coring tool. Wang designed a thin wall pressure maintaining coring tool under a deep-sea working environment, and carried out performance analysis [6] . Wang designed a coring barrel joint with an outer diameter of 135 mm thread profile according to the needs of large-diameter coring and optimized the thread structure through threedimensional simulation [7] .…”

Section: Introductionmentioning

confidence: 99%

Mechanical characteristics of a threaded joint of coring tool under makeup torque

Liu¹,

Yao²,

Yao³

2022

J. Phys.: Conf. Ser.

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Core samples play a very important role in understanding the characteristics and conditions of rock formation. The coring tool is the primary equipment used to obtain a core sample, which has been widely used in engineering, and oil and gas drilling, for example. In this paper, the models of conventional coring joints and special coring joints are established to study the mechanical properties of the two joints being subjected to makeup torque load. The results show that the design of the special coring tool with double shoulders effectively shares the force on the thread and has a good mechanical performance compared with the conventional single-shoulder coring tool.

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In-situ pressure-preserved coring for deep oil and gas exploration: Design scheme for a coring tool and research on the in-situ pressure-preserving mechanism

Guo,

Xie,

Gao

et al. 2024

Energy

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Scheme design and performance analysis of thin-walled pressure-retaining coring tools for seafloor drills in the deep-sea operating environment

Cited by 14 publications

References 18 publications

Design and Experimental Study of an Improved Pressure Core Sampler for Marine Gas Hydrates

Design and Experimental Study of an Improved Pressure Core Sampler for Marine Gas Hydrates

Mechanical characteristics of a threaded joint of coring tool under makeup torque

In-situ pressure-preserved coring for deep oil and gas exploration: Design scheme for a coring tool and research on the in-situ pressure-preserving mechanism

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