A Technique for Detecting Electric Line Sections with Wire Breakage

2020 ◽  
Vol 91 (6) ◽  
pp. 395-397
Author(s):  
A. V. Smirnov ◽  
N. M. Popov ◽  
D. M. Olin ◽  
A. A. Kirillin
Keyword(s):  
Wire Breakage ◽  
Electric Line

scholarly journals Application of Polydioxanone Sutures in the Nuss Procedure

2021 ◽  
Author(s):  
Yimin Xie ◽  
Jinbo Ning
Keyword(s):  
Surgical Repair ◽  
Steel Wire ◽  
The Other ◽  
Risk Indicators ◽  
Nuss Procedure ◽  
Level Of Evidence ◽  
Wire Breakage ◽  
Steel Wires ◽  
Duration Of Operation

Abstract Background/Purpose The Nuss procedure is the most common surgical repair for pectus excavatum (PE). Surgical steel wires are used in some modifications of the Nuss procedure to attach one or both ends of a support bar to the ribs. During follow-up, wire breakage was found in some cases. Patients with wire breakage may undergo prolonged bar removal surgery and may be exposed to excessive radiation.In this study, we had a series of patients who received polydioxanone suture (PDS) fixations instead of steel wires. This retrospective study was conducted to explore the differences between these two fixation materials in the incidence of related complications and efficacies. Furthermore, we attempted to observe whether the two materials lead to similar surgical efficacy in the Nuss procedure, whether they have divergent effects on the bar removal surgery, and whether PDS can reduce the risks due to steel wire breakage as expected. Methods We retrospectively studied PDS and surgical steel wires as fixation materials for the Nuss procedure in children with congenital PE and reviewed the outcomes and complications. A total of 75 children who had undergone Nuss procedure repairs and bar removals from January 2013 to December 2019 were recruited to participate in this study. They were divided into three groups: the PDS group, the unbroken wire (UBW) group, and the broken wire (BW) group, according to the fixation materials and whether the wires had broken or not. Moreover, we selected the duration of operation (DO), intraoperative blood loss (BL), bar displacement (BD), postoperative pain score (PPS), and incision infection as the risk indicators and the postrepair Haller index (HI) as the effectiveness indicator. These indicators were statistically compared to determine whether there were differences among the three groups. Results One BD occurred in the PDS and BW groups while none took place in the UBW group. No incision infection was found in any of the groups. The PDS group had the shortest DO, while the DO in the UBW group was shorter than that in the BW group (p < 0.05). BL in the PDS group was less than that in the other two groups (p < 0.05). Additionally, no difference was observed in BL between the BW and UBW groups (p > 0.05). The PPS of the PDS group was less than that of the BW group (p < 0.05), whereas no differences were found between the other two groups. No statistical difference emerged in HI among the groups (p > 0.05). Conclusion PDS fixation results in a similar repair outcome and shows certain advantages in the DO, BL, and PPS; also, PDSs are safe and effective in the Nuss procedure. Level of evidence Level III.

scholarly journals Using Externally Bonded CFRP to Repair a PCCP with Broken Wires under Combined Loads

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Kejie Zhai ◽  
Hongyuan Fang ◽  
Bing Fu ◽  
Fuming Wang ◽  
Benyue Hu
Keyword(s):  
Prestressed Concrete ◽  
Three Dimensional ◽  
Soil Pressure ◽  
Long Distance ◽  
Stress Strain ◽  
Wire Breakage ◽  
Water Pipelines ◽  
Externally Bonded ◽  
Prestressed Concrete Cylinder Pipe ◽  
Three Dimensional Finite Element

Prestressed concrete cylinder pipe (PCCP) is widely used for long-distance water pipelines throughout the world. However, prestressing wire breakage is the most common form of PCCP damage. For some pipelines that cannot be shut down, a new technique for in-service PCCP repair by externally bonding the pipe with layers of carbon fiber reinforced polymer (CFRP) was proposed. A set of three-dimensional finite element models of the repaired PCCP have been proposed and implemented in the ABAQUS software, which took into account the soil pressure, the weight of the PCCP, the weight of the water, and the hydrostatic pressure. The stress–strain features of the PCCP repaired with CFRP of various thicknesses were analyzed. The stress–strain features of different wire breakage rates for the repaired PCCP were also analyzed. The results showed that the strains and stresses decreased at the springline if the PCCP was repaired with CFRP, which improved the operation of the PCCP. It has been found that the wire breakage rates had a significant effect on the strains and stresses of each PCCP component, but CFRP failed to reach its potential tensile strength when other materials were broken.

Intra-operative K-wire breakage during odontoid screw fixation

2014 ◽  
Vol 62 (2) ◽  
pp. 203 ◽  
Author(s):  
PankajKumar Singh ◽  
Kanwaljeet Garg ◽  
Deepak Agrawal ◽  
BhawaniS. Sharma ◽  
SaquibAzad Siddiqui
Keyword(s):  
Screw Fixation ◽  
Wire Breakage

Wire Breakage Detection Using Relative Strain Variation in Unbonded Posttensioning Anchors

2015 ◽  
Vol 20 (1) ◽  
pp. 04014056 ◽  
Author(s):  
A. B. M. Abdullah ◽  
Jennifer A. Rice ◽  
H. R. Hamilton
Keyword(s):  
Strain Variation ◽  
Wire Breakage ◽  
Relative Strain

Case Study- Real Time Downhole Telemetry CCL and Tension Compression, a Differentiator for Successful Manipulation of ICD's in Horizontal Wells

2021 ◽  
Author(s):  
Usman Ahmed ◽  
Zhiheng Zhang ◽  
Ruben Ortega Alfonzo
Keyword(s):  
Saudi Arabia ◽  
Real Time ◽  
Oil Recovery ◽  
Horizontal Wells ◽  
Differential Pressure ◽  
Successful Operation ◽  
Coiled Tubing ◽  
Electric Line ◽  
Wide Range ◽  
Ict System

Abstract Horizontal well completions are often equipped with Inflow Control Devices (ICDs) to optimize flow rates across the completion for the whole length of the interval and to increase the oil recovery. The ICD technology has become useful method of optimizing production from horizontal wells in a wide range of applications. It has proved to be beneficial in horizontal water injectors and steam assisted gravity drainage wells. Traditionally the challenges related to early gas or water breakthrough were dealt with complex and costly workover/intervention operations. ICD manipulation used to be done with down-hole tractor conveyed using an electric line (e-line) cable or by utilization of a conventional coiled tubing (CT) string. Wellbore profile, high doglegs, tubular ID, drag and buoyancy forces added limitations to the e-line interventions even with the use of tractor. Utilization of conventional CT string supplement the uncertainties during shifting operations by not having the assurance of accurate depth and forces applied downhole. A field in Saudi Arabia is completed with open-hole packer with ICD completion system. The excessive production from the wells resulted in increase of water cut, hence ICD's shifting was required. As operations become more complex due to fact that there was no mean to assure that ICD is shifted as needed, it was imperative to find ways to maximize both assurance and quality performance. In this particular case, several ICD manipulating jobs were conducted in the horizontal wells. A 2-7/8-in intelligent coiled tubing (ICT) system was used to optimize the well intervention performance by providing downhole real-time feedback. The indication for the correct ICD shifting was confirmed by Casing Collar Locator (CCL) and Tension & Compression signatures. This paper will present the ICT system consists of a customized bottom-hole assembly (BHA) that transmits Tension, compression, differential pressure, temperature and casing collar locator data instantaneously to the surface via a nonintrusive tube wire installed inside the coiled tubing. The main advantages of the ICT system in this operation were: monitoring the downhole force on the shifting tool while performing ICD manipulation, differential pressure, and accurately determining depth from the casing collar locator. Based on the known estimated optimum working ranges for ICD shifting and having access to real-time downhole data, the operator could decide that required force was transmitted to BHA. This bring about saving job time while finding sleeves, efficient open and close of ICD via applying required Weight on Bit (WOB) and even providing a mean to identify ICD that had debris accumulation. The experience acquired using this method in the successful operation in Saudi Arabia yielded recommendations for future similar operations.

Light Well Intervention Using Conventional Slickline and Electric Line off the East Coast of Canada

2015 ◽  
Author(s):  
R. Loov ◽  
D. Locken ◽  
N. McInnes ◽  
E. Chippett
Keyword(s):  
East Coast ◽  
Electric Line

Rigless Remote Intervention: A Case Study of Combo Unit Utilization in Mahakam Offshore East Kalimantan

2021 ◽  
Author(s):  
R. Hidayat
Keyword(s):  
Space Requirement ◽  
Contract Administration ◽  
Electric Line ◽  
East Kalimantan ◽  
Efficiency Measures ◽  
Hazardous Area ◽  
Load Unit ◽  
Efficient Alternative ◽  
Intervention Team ◽  
Intervention Unit

Mahakam block has been producing for over 40 years and now is in declining phase. Daily drilling and well intervention operations are still actively carried out to sustain and prolong the natural decline curve. Efficiency measures are taken out in each and every aspect of operations to support the diminishing values. One of them is the reduction of offshore platform sizing. Future minimalist platforms have limited top deck space which will further be reduced by the prevalence of: 1. Fixed platform equipment (generators, crane, etc.), and 2. Hazardous area requirement for Zone 0, Zone 1, and Zone 2. The future minimalist platform has a deck space area of approximately 221 m2, not yet taken into account said the reduction factors. The presence of the hazardous area and fixed equipment can reduce the free deck space availability down to 20% from the total deck space. These platforms are not originally designed with well intervention work in mind. However, the past 40 years proves that well intervention should never be left out when extending well’s lifetime is the objective. Well intervention unit, depending on the intervention type, requires top deck space from 26 m2 up to 92 m2 of free space, and an additional 3-4 m2 for lifting, means such as mast unit if the platform does not have a crane. Moreover, in a remote intervention mode, where no supporting barge is present, space requirement above the top deck became crucial as there is no alternative to back load unit to the barge incase the top deck beingover crowded. To support the continuity of remote intervention being more efficient alternative to barge-supported operation, the well intervention team initiates the feasibility study using combo unit as a replacement for conventional slickline and electric line unit. There are three types of combo unit presented in this paper, 1. Split Combo Unit, 2. Combined Drum Combo Unit, and 3. Digital Slickline Combo Unit. These types of unit can reduce the deck space requirement by 30%, reducing number of personnel needed from eight (8) to five (5) personnel in a single shift, improving operation timing efficiency, and improves the contract administration aspect. Despite the seemingly positive results, there are still issues to be resolved, both technical and non-technical, for combo unit to be an all-rounder solution for wireline work. This paper shall provide an early level observation and analysis for the feasibility of combo unit as remote well intervention unit, starting from the methodology to the corresponding results and lesson learnt.

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