Special shut off device for liquidating blowout from the drill string
نویسندگان
چکیده
منابع مشابه
Drill string Vibration Modeling Including Coupling Effects
Abstract: The governing equations of motion for a drill string considering coupling between axial, lateral and torsional vibrations are obtained using a Lagrangian approach. The result leads to a set of non-linear equations with time varying coefficients. A fully coupled model for axial, lateral, and torsional vibrations of drill strings is presented. The bit/formation interactions are assumed ...
متن کاملPerformance of Sulfonated Polyacrylamide/Chromium Triacetate Hydrogels for Water Shut-off Treatment
A hydrogel was prepared by crosslinking aqueous solutions of sulfonated polyacrylamide/chromium triacetate for use in water shut off operations. Gel swelling and the effects of salinity, injection time and flow rate on residual resistance factor (Frr) were investigated. In the presence of electrolytes, gel swelling decreased by about 80%. Results showed that oil permeability increased as inject...
متن کاملEvolution of the shut-off steps of vertebrate phototransduction
Different isoforms of the genes involved in phototransduction are expressed in vertebrate rod and cone photoreceptors, providing a unique example of parallel evolution via gene duplication. In this study, we determine the molecular phylogeny of the proteins underlying the shut-off steps of phototransduction in the agnathan and jawed vertebrate lineages. For the G-protein receptor kinases (GRKs)...
متن کاملRamp Meters on Trial: Evidence from the Twin Cities Ramp Meters Shut-off
Ramp meters in the Twin Cities have been the subject of a recent test of their effectiveness, involving turning them off for 8 weeks. This paper analyzes the results with and without ramp metering for several representative freeways during the afternoon peak period, depending on data availability. Seven performance measures: accessibility, mobility, equity, productivity, consumer surplus, trave...
متن کاملEVALUATING EFFECTIVENESS OF RAMP METERS Evidence from the Twin Cities Ramp Meter Shut-off
Ramp meters in the Twin Cities have been turned off for eight weeks in fall 2000 in an experiment testing their effectiveness. This chapter analyzes the data collected during the experiment on several representative freeways during the afternoon peak period. Several performance measures for ramp metering including mobility, equity, consumers’ surplus, productivity, accessibility, and travel tim...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: AGH Drilling, Oil, Gas
سال: 2018
ISSN: 1507-0042
DOI: 10.7494/drill.2018.35.1.309