Results 21 to 30 of about 6,364,937 (291)
Gels, 2022 With the development of oil exploration, the number of complex situations encountered in the drilling process is continuously increasing. During the operation of large displacement and horizontal wells, the safe density window of drilling fluid is narrow
Junwei Fang +5 more
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Context and mitigation of lost circulation during geothermal drilling in diverse geologic settings [PDF]
, 2023 Lost circulation is one of the most common and expensive problems facing geothermal energy development, representing up to 30% of drilling costs. We examined drilling records from four geothermal fields—McGinness Hills in central Nevada, Don A.
Delwiche, Ben +8 more
core +1 more source
Applied Sciences, 2021 This work delineates a comprehensive study of one of the main problems that contributes towards nonproductive time (NPT) in a drilling operation, which is lost circulation.
Saleh A. Alhaidari, Sulaiman A. Alarifi
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Gels, 2022 Lost circulation in fractured formation is the first major technical problem that restricts improvements in the quality and efficiency of oil and gas drilling engineering.
Jingbin Yang +5 more
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Journal of Petroleum Exploration and Production Technology, 2018 Lost circulation materials (LCMs) are added to drilling fluids to mitigate lost circulation (LOC) problems. Designing the fluid requires a good understanding of sealing mechanisms and all the parameters affecting the sealing performance.
Montri Jeennakorn +4 more
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Static slot testing of conventional lost circulation materials [PDF]
, 1983 A study of the utility of conventional lost circulation materials and testing methods was performed using a modified API slot tester. Five lost circulation materials were evaluated in 266 tests at both room temperature and temperature-aged conditions ...
Wilde, S. L. +2 more
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LOST-CIRCULATION CONTROL WITH USING AERATED LIQUIDS [PDF]
, 2016 In article are given materials on lost-circulation control with using aerated drill fluids. Depending on type source of washing fluid were studied conditions of aerated liquid and reduce hydrostatic pressure to permeable zone.In article are given ...
Egamberdiyev B. Sh. +4 more
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Simulating Fracture Sealing by Granular LCM Particles in Geothermal Drilling
Energies, 2020 Lost circulation occurs when the returned fluid is less than what is pumped into the well due to loss of fluid to pores or fractures. A lost-circulation event is a common occurrence in a geothermal well.
Lu Lee, Arash Dahi Taleghani
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A self-breaking supramolecular plugging system as lost circulation material in oilfield
Open Chemistry, 2020 Lost circulation is a frequently encountered problem during workover operations of a low-pressure reservoir. Many lost circulation materials (LCM) have been used to solve the problem, but various disadvantages still exist, for example, oil-soluble ...
Zhang Hanshi, Jiang Guancheng
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Targeting the EpCAM‐AXL axis to overcome drug resistance in lung cancer
Molecular Oncology, EarlyView.Lung cancer cells often evade therapy by hijacking signaling pathways. We reveal that cleaved EpCAM (sEpCAM) stabilizes the oncogenic protein AXL, driving NF‐κB and STAT3‐mediated chemoresistance. This EpCAM‐AXL axis identifies a high‐risk patient subset with poor prognosis.
Alexa Guerrero‐Alba +5 more
wiley +1 more source