scholarly journals Numerical study on the thermal characteristics and its influence factors of crude oil pipeline after restart

2019 ◽  
Vol 14 ◽  
pp. 100455 ◽  
Author(s):  
Hang Dong ◽  
Jian Zhao ◽  
Weiqiang Zhao ◽  
Minglin Si ◽  
Junyang Liu
Keyword(s):  
Crude Oil ◽  
Numerical Study ◽  
Influence Factors ◽  
Thermal Characteristics ◽  
Oil Pipeline

scholarly journals Study on the thermal characteristics of crude oil pipeline during its consecutive process from shutdown to restart

2019 ◽  
Vol 14 ◽  
pp. 100434 ◽  
Author(s):  
Hang Dong ◽  
Jian Zhao ◽  
Weiqiang Zhao ◽  
Minglin Si ◽  
Junyang Liu
Keyword(s):  
Crude Oil ◽  
Thermal Characteristics ◽  
Oil Pipeline

NUMERICAL STUDY ON BATCH TRANSPORTATION OF CRUDE OIL PIPELINE WITH DIFFERENT OUTLET TEMPERATURES

2017 ◽  
Author(s):  
Qing Yuan ◽  
Lei Cai ◽  
Dongxu Han ◽  
Junfang Wang ◽  
Gaoping Zhang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Numerical Study ◽  
Oil Pipeline

Thermal Characteristics Simulation of the Commissioning Process for New Buried Heated Oil Pipelines

2011 ◽  
Vol 301-303 ◽  
pp. 610-616 ◽  
Author(s):  
Guo Qun Chen ◽  
Ming Hua Zhao ◽  
Bo Xu
Keyword(s):  
Temperature Field ◽  
Crude Oil ◽  
Thermal Characteristics ◽  
Hot Water ◽  
Waxy Crude Oil ◽  
Long Distance ◽  
Warm Up ◽  
Oil Pipeline ◽  
Heated Oil ◽  
Oil Pipelines

For a new buried heated oil pipeline, the temperature field of the surrounded soil is natural. Therefore the temperature is usually low in this case. For the waxy crude oil whose pour point is higher than the ground temperature, if the new pipeline transports such oil directly after heating, crude oil may gel in pipeline because its temperature decrease dramatically due to heat exchange between the fluid and the surrounded soil. Hence, in practical situation hot water is often used to warm up the pipelines for most of the new long-distance buried pipelines. Crude oil transportation is determined after the soil temperature field around the pipeline is sufficiently high and the inlet water temperature meets the requirement.

scholarly journals Geophysical investigations for stability and safety mitigation of regional crude-oil pipeline near abandoned coal mines

2021 ◽  
Vol 18 (1) ◽  
pp. 145-162
Author(s):  
B Butchibabu ◽  
Prosanta Kumar Khan ◽  
P C Jha
Keyword(s):  
High Resolution ◽  
Crude Oil ◽  
Seismic Refraction ◽  
High Resolution Imaging ◽  
Weak Zone ◽  
Near Surface ◽  
Oil Pipeline ◽  
Refraction Tomography ◽  
Geophysical Investigations ◽  
Resolution Imaging

Abstract This study aims for the protection of a crude-oil pipeline, buried at a shallow depth, against a probable environmental hazard and pilferage. Both surface and borehole geophysical techniques such as electrical resistivity tomography (ERT), ground penetrating radar (GPR), surface seismic refraction tomography (SRT), cross-hole seismic tomography (CST) and cross-hole seismic profiling (CSP) were used to map the vulnerable zones. Data were acquired using ERT, GPR and SRT along the pipeline for a length of 750 m, and across the pipeline for a length of 4096 m (over 16 profiles of ERT and SRT with a separation of 50 m) for high-resolution imaging of the near-surface features. Borehole techniques, based on six CSP and three CST, were carried out at potentially vulnerable locations up to a depth of 30 m to complement the surface mapping with high-resolution imaging of deeper features. The ERT results revealed the presence of voids or cavities below the pipeline. A major weak zone was identified at the central part of the study area extending significantly deep into the subsurface. CSP and CST results also confirmed the presence of weak zones below the pipeline. The integrated geophysical investigations helped to detect the old workings and a deformation zone in the overburden. These features near the pipeline produced instability leading to deformation in the overburden, and led to subsidence in close vicinity of the concerned area. The area for imminent subsidence, proposed based on the results of the present comprehensive geophysical investigations, was found critical for the pipeline.

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