Results 21 to 30 of about 186 (124)

Hydraulic retrieval of plugs in tubing hanger

open access: yes, 2022
MAS355
Loftesnes, Aurora Bondevik   +2 more
openaire   +1 more source

Reliability Analysis of Locking Mechanism of Tubing Hanger Running Tool

open access: yesShiyou jixie, 2017
The tubing hanger running tool has a high requirement for reliability, and its reliability needs to be analyzed to ensure to safely and efficiently complete the preset functions in the life cycle. The uncertainties of the geometrical dimensions, material
Cheng Youxiang   +4 more
doaj  

Problems of Gas Pressure Build-up in Casing String of UGS and Gas Wells [PDF]

open access: yesActa Montanistica Slovaca, 2006
This paper consists of three basic parts. The opening part is a brief description of problems associated with the secondary untightness of UGS wells (Underground Gas Storages) and gas wells generally.The main part of the paper is composed of some cases ...
Peter Sovius   +3 more
doaj  

Research and Test on Water Drainage Gas Recovery Velocity String Technology for Horizontal Well

open access: yesShiyou jixie, 2018
The fracturing technology without pulling string adopted in horizontal well in Sulige tight gas field results in large number of tools used in the wellbore, in addition, high well inclination makes the foam drainage, plunger gas lift and production ...
Zhao Binbin   +5 more
doaj  

Rigless Advancements: Enhancing Electric Submersible Pump Reliability Through Cable Deployment

open access: yesEnergies
Electric Submersible Pumps (ESPs) are widely deployed in high-flowrate wells but are constrained by frequent failures and the need for rig-based interventions.
Majid M. Rafie   +3 more
doaj   +1 more source

Design of Subsea Vertical Tree for 500 m Depth Water

open access: yesShiyou jixie, 2018
Subsea tree is the key equipment for deepwater oil and gas development. To sort out and extract the latest research progress and achievements of the subsea tree and to guide the design and development of related domestic products, the technical status of
Sun Chuanxuan   +5 more
doaj  

Optimization Design Method for Multistage Completion String of Shunnan Ultra-Deep Horizontal Well

open access: yesShiyou jixie, 2019
To address the problem of ultra-high pressure ultra-high temperature and difficult completion string design in the ultra-deep horizontal wells in Shunnan in the north slope of Tazhong, a set of optimization design methods for ultra-deep horizontal well ...
He Tong   +4 more
doaj  

Structural Design of Connection Methods for Well Control Controller Tubing Hanger

open access: yesScientific Journal of Technology
This paper conducts a systematic design of the connection structure between the well control controller and the tubing hanger, focusing on in‑depth analysis and strength verification of threaded connection methods. A comparison is made among four common connection forms—threaded, flanged, clamped, and welded connections—in terms of their ...
Peng Wei   +4 more
openaire   +1 more source

Heat Insulation Hollow Rod Heat-washing String for Offshore Oilfield

open access: yesShiyou jixie, 2018
The Well BX of Bohai JX Oilfield with a wax content of 10.2% and a wellhead temperature of 27℃ is prone to periodic wax plugging. To perform well washing while producing and avoid damage to the electric pump cable, considering the design features of ...
Xu Guoxiong   +3 more
doaj  

Metal Seal of Tubing Hanger in Ultra-high Pressure Gas Wells

open access: yesShiyou jixie
For 140 MPa ultra-high pressure mandrel-type tubing hanger, the semi-X shaped metal seal was selected. The impacts of ejector displacement, boss radius, bottom angle, interference and temperature on the sealing performance were examined through finite ...
Feng Chunyu   +4 more
doaj  

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