Results 71 to 80 of about 972,039 (207)
New Bit with Rolling PDC Cutter
Shiyou jixie, 2016 The new rolling PDC cutter drill bit technology could effectively address the fixed cutter eccentric wear issue,prolong durability,improve ROP,resulting in improved drilling efficiency and reduced drilling costs,which is a great step of drill bit ...
Shi Jiangang +4 more
doaj
Development of PDC Bit with Axe-shaped Teeth and its Application in East China Sea
Shiyou jixie, 2021 The PDC bits used in many wells in the East China Sea had low ROP and small footage in the process of drilling deep formation. After the bits were pulled out, it was found that the cutting teeth had been worn severely.
Li Qian +5 more
doaj
Andrology, Volume 14, Issue 7, Page 2252-2261, October 2026.ABSTRACT Background Infertility is a pressing global health concern, affecting one in six couples worldwide. The failure rate for assisted reproductive technologies (ART) cycles remains at approximately 78%, with limited improvements often attributed to a lack of technological innovation.
Mehran Dabiri +3 more
wiley +1 more source
ChemMedChem, Volume 21, Issue 18, 28 September 2026.Peptide‐enabled nanoplatforms offer multifunctional strategies for the treatment and diagnosis of malaria and leishmaniasis. Liposomal, polymeric, and metallic nanocarriers, together with cell‐penetrating peptides and parasite‐derived mimotopes, can improve targeted drug delivery, stability, bioavailability, and intracellular localization.
Christian S. Carnero Canales +7 more
wiley +1 more source
Simulation Study on the Drilling of PDC Bit at Compound Drilling Condition
Shiyou jixie, 2016 The forces on the PDC bit at the bottomhole could impact the PDC bit drilling efficiency and cutter wear.The cutter-rock interactions could be more complex in compound drilling mode.A new PDC bit drilling simulation method for compound drilling based on ...
Zheng Jiawei +5 more
doaj
Shiyou jixie, 2020 In order to give full play to the performance of the ROP improvement tool based on pulsed downhole alternating flow field, this paper studied its support PDC bit by means of numerical simulation.
Fan Jiqiang +5 more
doaj
Implications of thermal wear phenomena for PDC bit design and operation [PDF]
, 1985 Previous work has suggested that thermal phenomena can greatly accelerate the wear of polycrystalline diamond compact (PDC) drag cutters under certain conditions.
D.A. Glowka, Glowka, D.A.
core +1 more source
Optimization of Hydraulic Structure of Rotary Cutting PDC Bit
Shiyou jixie, 2020 Few researches have been conducted on the hydraulic structure optimization design of rotary cutting PDC bit. Standard k-ε model and discrete phase model (DPM) are used to simulate the bottom hole flow field of rotary cutting PDC bit and optimize the ...
Cao Yang, Zhang Boyu
doaj
Design considerations for a hard-rock PDC drill bit [PDF]
, 1985 This paper discusses the potential for developing a polycrystalline diamond compact (PDC) drill bit for hard-rock applications such as geothermal drilling.
Glowka, D.A.
core
Research on Drilling Response Characteristics of Two-Wing PDC Bit
, 2020 Research on drilling response characteristics of two-wing polycrystalline diamond compact (PDC) bit in different rocks is an important way to further understand the mechanism of rock-breaking, improve drilling efficiency, and identify the rock formation ...
Zhishang Li +4 more
core +1 more source