Geochemical characteristics of the Paleogene shales in the Dongying depression, eastern China

Chen, Zhonghong; Wei, Huang; Liu, Qing; Zhang, Linye; Zhang, Shouchun

doi:10.1016/j.marpetgeo.2016.02.022

Cited by 35 publications

(41 citation statements)

References 65 publications

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“…As the water continues to disperse, the center of the water jet breaks from the previous tightened status, and the water mass gradually disperses with the increase of the distance to the nozzle outlet and eventually it transforms into water droplets. The following conclusion was reached after numerous experiments [ 21 – 25 ].…”

Section: Theories Of High Pressure Water Jetmentioning

confidence: 86%

“…The water jet can be divided into non-submerged water jet and submerged water jet according to the difference between the jet medium and the surrounding [ 21 – 25 ]. When the density of water is much higher than the density of the surrounding, the water jet is categorized as a non-submerged water jet (i.e.…”

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

“…Second, in the basic stage, the diffusion of water jet is relatively stable. Its diffusion complies with the following two diffusion law equations [ 21 – 25 ]: Where, R is the radius of the water jet section, R 0 is the radius of the nozzle outlet, k is the coefficient associated with the nozzle, k 1 is 0.12–0.18, x is the distance to the nozzle outlet.…”

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

“…In addition, the dynamic pressure can also reflect the change of the air intake and the velocity attenuation regularity. The dynamic pressure of the fluid at the nozzle outlet complies with the following equation [ 21 – 25 ]: Where, P 0 is the dynamic pressure of the fluid at the nozzle outlet, ρ is the density of water, U 0 is the initial jet velocity of the water jet, P i is the dynamic pressure of the fluid at the nozzle inlet, c is the velocity coefficient of the nozzle.…”

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

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Experimental research on the performances of water jet devices and proposing the parameters of borehole hydraulic mining for oil shale

2018

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Oil shale is an unconventional energy source, and it is also a potential petroleum substitute. Nowadays, the energy shortage is becoming more and more prominent, oil shale has attracted the attention of energy researchers all over the world. Borehole hydraulic mining is an effective method to exploit the underground oil shale which has more prominent advantages than other conventional mining methods. Jet devices are the key component of borehole hydraulic mining, which include the straight cone nozzle, organ pipe nozzle and self-excited oscillation pulsed jet nozzle. Also, the reasonable mining parameters are also crucial in mining underground oil shale efficiency. The jet characteristics of the non-submerged water jet, submerged water jet, direct water jet, cavitating water jet, and pulsed water jet are also explained and compared based on theoretical analysis. The jet performance of the non-submerged water jet is better than the submerged water jet. Each type of jet devices has its own basic principles and optimal structural parameters. The best operating scheme of borehole hydraulic mining for underground oil shale is to use the pulsed water jet which is produced by the self-excited oscillation pulsed jet nozzle to break underground oil shale under the non-submerged condition. Moreover, the pulsed water jet should be placed parallel to the oil shale bedding. In addition, under the preconditions of ensuring the safety and reliability of the hydraulic mining equipment and pipelines connection, the jet pressure and jet flow should be raised as much as possible, so as to obtain the much higher mining efficiency. These results and conclusions can provide very valuable guidance for borehole hydraulic mining of underground oil shale.

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Section: Theories Of High Pressure Water Jetmentioning

confidence: 86%

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

Section: Theories Of High Pressure Water Jetmentioning

confidence: 99%

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Experimental research on the performances of water jet devices and proposing the parameters of borehole hydraulic mining for oil shale

2018

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“…The Paleogene subtle traps and subtle reservoirs in the Dongying Depression occurred in two petroleum plays, one in the source rocks of the upper part of E2s4 (Sq2-2) and E2s3 (including Sq3-1 and Sq3-2, Sq3-3) and the other in E2s2 to E2d, which are far away from source rocks (including Sq3-4 and Sq4-1 to Sq4-4) (Fig. 2) (Li et al 2003(Li et al , 2010Zhang et al 2009b;Guo et al 2012;Chen et al 2016). Subtle traps and subtle reservoirs in the Depression include (1) lithologic traps and lithologic reservoirs; (2) stratigraphic traps and stratigraphic hydrocarbon reservoirs; and (3) structural and lithologic combination traps and their reservoirs (Fig.…”

Section: Types Of Subtle Traps and Subtle Reservoirsmentioning

confidence: 99%

Distribution and controls of petroliferous plays in subtle traps within a Paleogene lacustrine sequence stratigraphic framework, Dongying Depression, Bohai Bay Basin, Eastern China

et al. 2019

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The characteristics of petroliferous plays in subtle traps within a sequence stratigraphic framework in the Dongying Depression are investigated in this study. Sand bodies within lowstand systems tracts (LSTs) of sequences, comprising incisedchannel fills, sublacustrine fans, deltas in LSTs, controlled by syndepositional normal faults, and sand bodies within transgressive systems tracts (TSTs) to early highstand systems tracts (HSTs), consisting of beach bars, and turbidites, controlled by the prodelta slope, paleorelief, and syndepositional normal faults, are good subtle reservoirs. Mudstones and shale of deep lake subfacies in TSTs to early HSTs of sequences are source and cap rocks. Abnormal overpressure is the dominant dynamic factor for hydrocarbon migration from source rock to the subtle traps. Normal faults, sand bodies, and unconformities function as conduit systems. Sand bodies distributed in the abnormal overpressure source rocks within LSTs to early HSTs are petroliferous plays in lithologic traps. The petroliferous plays in stratigraphic traps are controlled by unconformities at margins of the Depression.

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Lithofacies and geochemical analysis of intertrappeans of the Ninama Basin, Saurashtra, Western India: An integrated approach for paleolake depositional system

Shah,

Patel

2024

J Earth Syst Sci

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Geochemical characteristics of the Paleogene shales in the Dongying depression, eastern China

Cited by 35 publications

References 65 publications

Experimental research on the performances of water jet devices and proposing the parameters of borehole hydraulic mining for oil shale

Experimental research on the performances of water jet devices and proposing the parameters of borehole hydraulic mining for oil shale

Distribution and controls of petroliferous plays in subtle traps within a Paleogene lacustrine sequence stratigraphic framework, Dongying Depression, Bohai Bay Basin, Eastern China

Lithofacies and geochemical analysis of intertrappeans of the Ninama Basin, Saurashtra, Western India: An integrated approach for paleolake depositional system

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