Results 51 to 60 of about 487,846 (208)

Analisis Permasalahan Sucker Rod Pump Pada Sumur X Lapangan Y Untuk Meningkatkan Produksi Menggunakan Software Lowis

open access: yes, 2023
X field Y well is an artificial lift well using a Sucker rod pump (SRP) type to help increase oil production. Well X field Y is experiencing a decrease in the production flow rate, so it needs to be increased so that well production can be maximized.
Rizqi, M. Nur
core   +2 more sources

Influencing Factors and Evaluation of Comprehensive Performance of Sucker Rod Pumping System

open access: yesShiyou jixie, 2019
To study the influence of downhole working conditions, oil production parameters and rod pump parameters on the comprehensive performance of the artificial lift system, based on the research of the data of the rod pumped wells in the Shengli Oilfield ...
Qu Baolong, Ma Weiguo
doaj  

Functional anatomy, jaw mechanisms, and feeding behavior of Dunkleosteus terrelli (Placodermi, Arthrodira)

open access: yesThe Anatomical Record, Volume 309, Issue 10, Page 2574-2635, October 2026.
A new musculoskeletal reconstruction and revision of the cranio‐mandibular anatomy of the Devonian arthrodire placoderm Dunkleosteus terrelli from a comparative and functional anatomical perspective. Dunkleosteus is a specialized arthrodire with many specializations for feeding on large vertebrates, and many of its features are part of broader ...
Russell K. Engelman   +4 more
wiley   +1 more source

Over Stroke of Carbon Fiber Continuous Sucker Rod

open access: yesShiyou jixie, 2019
Carbon fiber continuous sucker rods are used in oil production systems. However, the over stroke was observed in the movement of the plunger with unknown influence, leading to lack of theoretical basis in the design and application of carbon fiber ...
张雷   +5 more
doaj  

A Novel Method for Predicting the Behavior of a Sucker Rod Pumping Unit Based on the Polished Rod Velocity

open access: yesMathematics
Fault dynamometer cards are the basis of the diagnosis technique for sucker rod pumping systems. Predicting fault cards with a pumping condition model is an economical and effective method.
Jiaojian Yin, Hongzhang Ma
doaj   +1 more source

Research on the Discrimination of Acoustic Emission Signal Transmission Modes for Void Damage in Concrete‐Filled Steel Tubes

open access: yesEngineering Reports, Volume 8, Issue 10, October 2026.
Acoustic emission transmission modes for void damage in concrete‐filled steel tubes. ABSTRACT Concrete‐filled steel tubes (CFST) have been extensively employed in large‐scale construction projects as high‐performance composite structural members. Nevertheless, varying degrees of void damage frequently occur in CFST due to construction quality issues ...
Peng Tang, Ning Zhang
wiley   +1 more source

A Uniform and Reduced Mathematical Model for Sucker Rod Pumping [PDF]

open access: yes, 2004
The dynamic mathematical models were greatly developed to describe the motion of the sucker-rod pumping system since 1960s and various mathematic models based on different assumptions were presented. This paper does a study in three sides. First, a mathematical model is presented to describe the sucker-rod string with longitudinal and transverse ...
Leiming Liu   +3 more
openaire   +2 more sources

“We Can No Longer Live by the Domostroi”: The Riddles of Anna Nikanorovna Paskhalova‐Mordovtseva

open access: yesThe Russian Review, Volume 85, Issue 4, Page 417-437, October 2026.
Abstract This article analyzes the rebuses (picture riddles) of Anna Nikanorovna Paskhalova‐Mordovtseva. It argues that despite their seemingly modest nature as artefacts of everyday leisure, Mordovtseva used these puzzles to make radical claims and assert herself as a public intellectual.
Ksenia Butuzova, Julia Mannherz
wiley   +1 more source

Compressive forces causing rod buckling in sucker rod pumps and using sinker bars to prevent buckling [PDF]

open access: yes, 2016
Sucker rod pumps has been the most commonly used pumps in the petroleum industry. Therefore, many studies associated with sucker rods focuses on maximizing the rod life.
Eritici, Cagdas
core   +1 more source

Running-in Position Determination of Centralizer for Anti-eccentric Wearing of Directional Well

open access: yesShiyou jixie, 2016
In the design of centralizer,it is usually assumed that the sucker rod coupling and the centralizer to be straight bars with equivalent cross-sectional areas.This is a bias that should be corrected.Based on the feature that sucker rod string with ...
Fu Yarong
doaj  

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