Results 11 to 20 of about 178,865 (298)

Synthesis of a copolymerization and the anti-high temperature property in oil well cement slurry fluid [PDF]

open access: yesMATEC Web of Conferences, 2022
Four monomers including AMPS, acrylic acid (AA), N,N-dimethylacrylamide (DMAA), and sodium allylsulfonate (AS) were used to synthesize quaternary fluid loss reducer (FRW) through copolymerization.
Wang Wenbin, Wan Xiangchen, Tang Kai
doaj   +1 more source

Study on selective plugging characteristics and oil displacement mechanism of microsphere in porous media [PDF]

open access: yesMATEC Web of Conferences, 2022
Microspheres are widely used as profile control and water plugging products at present. However, the current research on microspheres is mainly focused on oil displacement experiments.
Yuan Bo   +7 more
doaj   +1 more source

Synthesis and performance of a small molecular quaternary ammonium salt inhibitors [PDF]

open access: yesE3S Web of Conferences, 2022
In this work, the quaternary ammonium salt small molecule inhibitors with melamine and sodium chloroacetate as raw materials was synthesized and it has certain inhibition on the hydration swelling of bentonite. Through linear swelling test, mud ball test
Jia Jun   +3 more
doaj   +1 more source

Study on Start-Up Process of SAGD by Solvent: Experiment Research and Process Design

open access: yesGeofluids, 2021
Steam-assisted gravity drainage (SAGD) has been used to develop the “super heavy” oil reservoirs in Canada. The viscosity can reach more than 30,000 cp at 50°C.
Jun Sun   +6 more
doaj   +1 more source

Study and Application of Combination Cementing Technology of Gypsum Salt Layer in Kuqa Piedmont Structure, Tarim Basin [PDF]

open access: yesJournal of Petroleum Science and Technology, 2022
Kuqa piedmont is the main battlefield of natural gas production in the oil field and the source of west-east gas transmission. The wellbore quality is related to the safety of well construction and production. However, the well cementation quality of the
Yicheng Sun, Zhenglian Liu, Xu Song
doaj   +1 more source

Verstetigung in der nachhaltigen Quartiersentwicklung : eine Analyse aus Sicht der Urban Regime Theory [PDF]

open access: yesGeographica Helvetica
Städte haben in den vergangenen Jahren begonnen, eine quartiersbezogene Nachhaltigkeitspolitik zu realisieren, die auf einem netzwerkorientierten Planungsverständnis aufbaut.
M. Drilling
doaj   +1 more source

Phase Behavior Analysis of CO2 and Formation Oil System

open access: yesGeofluids, 2021
In this paper, there are nine oil samples to explore the characteristics of formation oil at different CO2 injection rate, and the characteristics include bubble point pressure, volume expansion coefficient, viscosity, density, and average molecular ...
Lei Tang   +4 more
doaj   +1 more source

The Fragile Body in the Functional City: An Editorial

open access: yesUrban Planning, 2019
Changing circumstances force planning to re-define its role as a driving function shaping our cities today. One of the significant challenges to the century-old tradition of planning comes from the ageing population.
Matthias Drilling, Fabian Neuhaus
doaj   +1 more source

Study on Autogenous Heat Technology of Offshore Oilfield: Experiment Research, Process Design, and Application

open access: yesGeofluids, 2021
Conventional heavy oil has abundant reserves and low recovery efficiency in offshore oilfields. Autogenous heat technology uses 2-3 kinds of inorganic salt solution to produce inert gas and release a lot of heat under the action of a catalyst.
Yanping Sun   +6 more
doaj   +1 more source

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