Acoustical properties of drill strings
The Journal of the Acoustical Society of America, 1989 The recovery of petrochemical and geothermal resources requires extensive drilling of wells to increasingly greater depths. Real-time collection and telemetry of data about the drilling process while it occurs thousands of feet below the surface is an effective way of improving the efficiency of drilling operations.
openaire +2 more sources
Bound by blood and bloodshed: Sibling ties and participation in genocidal violence
Criminology, EarlyView.Abstract Focusing on the 1994 genocide in Rwanda, we examine how sibling relationships—one of the most salient familial bonds—influence individual engagement in violence during mass atrocity. Drawing on an adaptation of differential association and social learning theories for contexts of mass atrocity, we analyze a novel dataset linking over 300,000 ...
Jack G. R. Wippell +3 more
wiley +1 more source
Stick-Slip Vibration Suppression in Drill String Using Observer-Based LQG Controller. [PDF]
Sensors (Basel), 2022 Riane R +4 more
europepmc +1 more source
Downhole logging as a paeoceanographic tool on ocean drilling program leg 138: Interface between high-resolution stratigraphy and regional syntheses [PDF]
, 1992 On Ocean Drilling Program (ODP) Leg 138, standard shipboard procedures were modified to allow for the real-time monitoring of several laboratory core-scanning systems that provide centimeter-scale measurements of saturated bulk density, magnetic ...
Bloomer, Stephen F. +6 more
core +4 more sources
Journal for Eighteenth-Century Studies, EarlyView.Abstract The final Stuart monarch, Queen Anne, has often been overlooked in studies of visual and material culture, particularly of fashion and dress. This article is the first to undertake a qualitative and quantitative analysis of the wardrobe accounts of Queen Anne, situating her consumption within the context of the eighteenth‐century fashion ...
Sarah A. Bendall
wiley +1 more source
Research on damage progression of drill string material based on the extended finite element method. [PDF]
Sci Prog, 2021 Ying Z, Zhanghua L, Chenxin W, Brice NF.
europepmc +1 more source
Деякі питання експлуатаційної надійності бурильної колони та її елементів у процесі будівництва сверловин [PDF]
, 2013 У статті розглянуто ефективність функціонування технологічного процесу поглиблення свердловини на основі ймовірних показників буріння і стану елементів бурильної колони. Приведено результати експериментального буріння із записом вібрацій, які використані
Гоголь, В. І. +2 more
core
On 3‐MMC: A Cathinone I Have Come to Know and Love
Anthropology of Consciousness, EarlyView.ABSTRACT This article attempts to complicate the mythology of a compound in a state of becoming. I will trace lightly its origins as a cultural disruptor and how I am implicated in this imperative. Introducing you to 3‐MMC will require multiple modes of storytelling and taking of liberties, drawing on literature reviews, practice‐based research, prose,
Carmen Ostrander
wiley +1 more source
Computer simulation of a drilling bit feed rate regulator comprising of a dc motor
Известия высших учебных заведений: Проблемы энергетики, 2017 This paper considers the possibility of applying a drawworks DC motor and a magnetic powder brake as an active bit feed rate regulator. A dynamic mathemat-ical model of the DC motor is presented.
O. V. Nikulin, V. A. Shabanov
doaj +1 more source
Research on a Measurement Method for Downhole Drill String Eccentricity Based on a Multi-Sensor Layout. [PDF]
Sensors (Basel), 2021 Li H, Wang R.
europepmc +1 more source