Results 41 to 50 of about 4,333,866 (196)

Staged Fracturing of Horizontal Wells in Continental Tight Sandstone Oil Reservoirs: A Case Study of Yanchang Formation in Western Ordos Basin, China

open access: yesFrontiers in Earth Science, 2021
Continental tight sandstone oil reservoirs have strong heterogeneity, and staged fracturing technology of horizontal well is a crucial measure for successful development of oil and gas.
Dingxue Zhang   +5 more
doaj   +1 more source

Leptin in bovine plasma, colostrum and milk during the first month of lactation

open access: yes, 2003
The objective of this study was to determine leptin content in bovine colostrum and mature milk during the first month of lactation, and their possible relation with plasma leptin.
L. Pinotti, F. Rosi
core   +1 more source

Simulation analysis of the mechanism and influencing factors of remaining oil secondary enrichment in ultra-high water cut fault block reservoirs

open access: yesEnergy Exploration & Exploitation, 2023
After the near-abandoned production wells in the high part of the fault block reservoir are closed for a period of time, the remaining oil in the low part will accumulate at the fault in the high part to produce secondary enrichment. At present, research
Chuanzhi Cui   +7 more
doaj   +1 more source

Evaluating and study of natural gas injecting in Shunbei-1 block fault-controlled fractured-cavity type reservoir

open access: yesFrontiers in Earth Science
The fault cavern type reservoir in Block 1 of Shunbei area is located in the ultra-deep layer and is classified as a volatile oil reservoir. The reservoir is characterized by very deep burial with an oil/gas ratio between 250 and 500 m3/tone and a ...
Yunfeng He   +7 more
doaj   +1 more source

Effect of Microscopic Pore Throat Structure on Displacement Characteristics of Lacustrine Low Permeability Sandstone: A Case Study of Chang 6 Reservoir in Wuqi Oilfield, Ordos Basin

open access: yesGeofluids, 2022
Pore throat structure is the key factor affecting displacement efficiency in low permeability reservoirs. In this paper, the pore throat structure and displacement characteristics of Chang 6 low permeability sandstone reservoir in Wuqi area of Ordos ...
Ren Qiang   +5 more
doaj   +1 more source

Diagenetic features and porosity dense evolution of Chang 8 tight sandstone reservoir in Hujianshan area, Ordos Basin

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
Diagenesis is the main reason for tight reservoir lithology, complex pore-throat structure, strong heterogeneity, and variable occurrence and distribution characteristics of fluid in the pore-throat, which directly restricts the Chang 8 oil layer group ...
Jian Shi   +8 more
doaj   +1 more source

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