Analysis of low frequency axial drilling dynamics from block velocity input to surface weight on bit (SWOB) or differential pressure outputs, shows significant regional variation. This range in dynamics poses a robustness challenge for automated drilling control systems. Many factors influence drilling dynamics such as pipe stiffness, mud properties, tortuosity, friction, bit design, and BHA geometry.A simple analytic model representing axial drilling dynamics is described and compared to a finite element drilling model and to drilling data. The analytic model shows that axial drilling dynamics may be represented by a first-order transfer function with a time constant dependent on axial stiffness and drillabillity. Reach out to us here for the full tech paper: https://www.helmerichpayne.com/resources/technical-publications/modeling-of-axial-rotary-drilling-dynamics-as-a-step-towards-drilling-automation or contact us here: https://www.helmerichpayne.com/contact.
@Emma_Dohnam Me and my sisterWarning this book is fanfiction but also freestyle so if there is something in here that isn't in the book that was creativity.
A outsider Johnny Cade x Y/n story in witch Dallas younger sister has a crush on her friend Johnny
juyeon and changmin become partners for a school assignment. changmin isn't the kind of person who regularly makes friends, he doesn't have friends. and when he finally meets someone who wants to be his friend, changmin struggles to want the same thing as he finds himself falling for juyeon. highest rankings#2 in jukyu(short story)
Denki has always liked girls. But when the new kid Shinsou was transferd into class 1-A he began to question his sexual identity. Meenwhile Jirou is trying to figure out why the hell she feels the way she does about Momo. While Denki and Jirou's mental health gets worse Momo and Shinsou become more and more attached to them.
[👑 3rd Place in the Dragon Ball Z Watty Awards]Tough decisions are arising for the last remaining saiyans Gohan Son, Trunks Briefs, Cheri Ko, and Hope Ko. The Saiyans are growing up in a dangerous world terrorized by the fiendish androids created by none other than the genious scientist Dr. Gero. The Z Fighters and Sora, twin sister of Goku and mother of half-sisters Cheri and Hope, were assassinated by the vicious androids. Unfortunately, Goku never got the chance to face the monsters as he perished to the fatal heart disease several months prior to their arrival.As each of the saiyans approach adolescence, they come to terms with the fact that they must choose between fighting in vengeance of their lost loved ones or watching in torment as the human race meets its demise. Over the years, Gohan and Cheri attempt to fight where their hearts lead them. And soon too, Trunks and Hope can no longer deny their strong feelings.______________________________________Disclaimer: Dragonball Z is owned by FUNimation, Toei Animation, Fuji TV, and Akira Toriyama. I also do not own the slightly edited featured art. I only own Sora, Cheri, Amai, Buruto, Zen, Valor, and Hope.The cover was done by kakophony.
The Keeper crew are no longer elves: They're regular humans seeking out joy in the empty wasteland that is life.
Just so you know I don't own Both DBZ or DXD and try to keep update cuz I rarely gonna update this story so for that being said this is just my first story so if it is bad I can take some advice