Results 11 to 20 of about 430,784 (291)

Effect of a rapeseed oil derived pour point depressant on the flow properties of the waxy oil from Changqing Oilfield [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper, rapeseed oil was modified with diethylenetriamine to obtain a vegetable oil-derived pour point depressant (PPD), which was used to reduce the pour point and improve the flowability of the crude oil (from Changqing Oilfield), which has a ...
Wang Yongzhen   +8 more
doaj   +1 more source

Determination of dynamic reserves of fractured horizontal wells in tight oil reservoirs by multi-region material balance method

open access: yesPetroleum Exploration and Development, 2016
To overcome the deficiencies of the material balance method, according to strong heterogeneity of tight oil reservoirs, the flow region of fractured horizontal well is divided into high permeable zone and low permeable zone, which are equivalent to ...
Yi WEI   +4 more
doaj   +1 more source

Preparation of oligosaccharide CQ01 and its lubricity in drilling fluid [PDF]

open access: yesE3S Web of Conferences, 2022
Based on its good water solubility, temperature resistance and environmental protection, oligosaccharides are widely used in food and beverage, baking and medical care.
Wang Qingchen   +4 more
doaj   +1 more source

Revenue Risk of U.S. Tight-Oil Firms [PDF]

open access: yesEnergies, 2016
American U.S. crude oil prices have dropped significantly of late down to a low of less than $30 a barrel in early 2016. At the same time price volatility has increased and crude in storage has reached record amounts in the U.S. America. Low oil prices in particular pose quite a challenge for the survival of U.S. America’s tight-oil industry.
Luis Abadie, José Chamorro
openaire   +3 more sources

Crude oil mobility and its controlling factors in tight sand reservoirs in northern Songliao Basin, East China

open access: yesPetroleum Exploration and Development, 2019
Taking tight oil in Gaotaizi and Fuyu oil layers of the Upper Cretaceous Qingshankou Formation in northern Songliao Basin as an example, based on analyses of nuclear magnetic resonance and high pressure mercury injection, experiment methods of ...
Jun FENG   +11 more
doaj   +1 more source

Effect of nano pour point depressant on the flow properties of the waxy crude oil from Changqing Oilfield [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper, graphene oxide (GO) was modified with alkyl amidopropyl diethanolamine to obtain a nano pour point depressant (GO-PPD), which was used to improve the flowability of the waxy oil extracted from Changqing Oilfield, China.
Wen Huatao   +7 more
doaj   +1 more source

Three dimensional characterization and quantitative connectivity analysis of micro/nano pore space

open access: yesPetroleum Exploration and Development, 2016
Evaluation is performed on pore connectivity of unconventional reservoirs using 3-D FIB-SEM imaging characterization and digital rock techniques. 3-D images are first obtained by FIB-SEM device and then transformed into digital pore structure model ...
Liang SUN   +4 more
doaj   +1 more source

Exploration and development of continental tight oil in China

open access: yesPetroleum Exploration and Development, 2018
Based on the investigation of tight oil exploration and development in North America, the successful cases of tight oil exploration and development in North America are summarized.
Suyun HU   +5 more
doaj   +1 more source

Progress and development directions of shale oil reservoir stimulation technology of China National Petroleum Corporation

open access: yesPetroleum Exploration and Development, 2021
By reviewing the development history of shale oil reservoir stimulation technology of PetroChina Company Limited (PetroChina), we have systematically summarized the main progress of shale oil reservoir stimulation technology of CNPC in five aspects ...
Qun LEI   +8 more
doaj   +1 more source

Experimental Study on the Effect of Supercritical CO2 on Mechanical Properties and Fracture Characteristics of Longmaxi Shale

open access: yesAdvances in Materials Science and Engineering, 2023
Conventional hydraulic fracturing techniques typically consume large amounts of water when producing shale gas. Fracking fluids may cause environmental pollution. In contrast, supercritical carbon dioxide (scCO2) (above 31.8°C, 7.29 MPa) can displace CH4
Ran Zhang   +4 more
doaj   +1 more source

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