Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Gonghui LIU"'
Publikováno v:
Energy Science & Engineering, Vol 12, Iss 1, Pp 249-266 (2024)
Abstract Managed pressure cementing (MPC) is a new technology based on managed pressure drilling, which has a greater advantage in facing narrow density window formations. However, the existing pressure prediction models during MPC injection stage co
Externí odkaz:
https://doaj.org/article/cd552de576454833afeef1ffe31b4c81
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 3358-3368 (2023)
A multiphase flow model is an important foundation for well control simulation. In this paper, a multiphase variable mass flow model considering sudden density change was developed for variable gradient managed pressure drilling (MPD) and it was solv
Externí odkaz:
https://doaj.org/article/c71dfa3385cc483dafdd62fdc2fa2c22
Publikováno v:
Energy Reports, Vol 9, Iss , Pp 2638-2652 (2023)
Drilling into fractured formations can easily lead to mud loss, which significantly affects drilling efficiency and increases drilling costs. In high-temperature and high-pressure environments, changes in mud properties render mud loss more uncontrol
Externí odkaz:
https://doaj.org/article/a15c849c16ea4f34bcbf3f4447c13a3d
Publikováno v:
Applied Sciences, Vol 14, Iss 20, p 9249 (2024)
Aimed at the problem of gas flurries in carbon dioxide (CO2) geologic sequestration in the wellbore, this paper proposes a sealing method in which the downhole casing is processed with threaded grooves and then plugged with a low-melting-point alloy
Externí odkaz:
https://doaj.org/article/8b425395f63f4bbfae0e82193e1650e6
Publikováno v:
Energy Science & Engineering, Vol 11, Iss 3, Pp 1060-1079 (2023)
Abstract Horizontal wells with a slim hole (HW‐SH), characterized by high productivity, high environmental protection, and low cost are gradually being introduced into oil and gas extraction processes in high‐temperature and high‐pressure forma
Externí odkaz:
https://doaj.org/article/9e4ae16723244d63b03d33ec9f706257
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 13997-14008 (2022)
Casing is inevitably damaged during perforation operation, and the perforation parameters will have a significant impact on the degree of casing damage, which will directly affect the stability of casing structure in the process of hydraulic fracturi
Externí odkaz:
https://doaj.org/article/f1ff5048ebc745028afba2a5ed38eab5
Publikováno v:
Energy Reports, Vol 8, Iss , Pp 1591-1601 (2022)
The special temperature-pressure environment and narrow safety density window of the deepwater formation pose a great challenge to wellbore pressure control during drilling. The downhole variable-gradient drilling method is an effective idea to solve
Externí odkaz:
https://doaj.org/article/e07148fe2197467c89983b27fbbb30d0
Publikováno v:
Energy Science & Engineering, Vol 10, Iss 7, Pp 2290-2304 (2022)
Abstract Sand deposition in the wellbore is one of the most common problems in oil–gas and hydrate exploitation work. A detailed understanding of the migration characteristics of the sand bed and accurate prediction of the starting velocity of the
Externí odkaz:
https://doaj.org/article/aa6b5f0264d84ff29d61a3faaf6e12ea
Publikováno v:
Energy Science & Engineering, Vol 9, Iss 12, Pp 2364-2379 (2021)
Abstract Compound percussive drilling technology is a new method to improve the rock‐breaking efficiency in deep hard formation. In order to study the rock‐breaking mechanism of compound impact drilling, the thermal‐structure coupling simulatio
Externí odkaz:
https://doaj.org/article/f81b31e534ba42a7b7438da41bc9b113
Publikováno v:
Energy Reports, Vol 7, Iss , Pp 3137-3148 (2021)
Improving the rock-breaking efficiency of hard rock formation has always been of concern in drilling. Compound impact drilling technology is a new method to achieve efficient crushing of hard rock by exerting axial and torsional impacts on the drilli
Externí odkaz:
https://doaj.org/article/44538e374cd0410088374d04addf07a0