Data-Driven Integration to Delineate Zonal Isolation and Casing Deterioration Using Advanced Ultrasonic Technology – A Blueprint to Well Integrity Evaluation

2021 ◽  
Author(s):  
Mohammad Rasheed Khan ◽  
Hassaan Ahmed ◽  
Abdul Bari ◽  
Kamran Rashid ◽  
Syed Dost Ali ◽  
...  
Keyword(s):  
Comprehensive Evaluation ◽  
Building Blocks ◽  
Waveform Analysis ◽  
Integrated Analysis ◽  
Flexural Mode ◽  
Cement Interface ◽  
The Third ◽  
Well Integrity ◽  
Wave Imaging ◽  
Pulse Echo

Abstract State-of-the-art advanced ultrasonic measurement through the Leaky-Lamb wave imaging technique (more commonly known as the flexural waveform analysis) was introduced nearly two decades ago to expand the envelope beyond which the classical pulse-echo evaluation operated. This technology has proven to be a game-changer in cement evaluation through provision of an integrated analysis which deconvolutes beyond the casing-cement interface and investigates further into the third interface. In this work, we integrate the cutting-edge analysis provided by ultrasonic flexural mode with the classical pulse-echo approach to yield a novel well-integrity evaluation blueprint. Subsequently, it is shown how this workflow is applied to an ultra-high pressure (UHP) exploratory well for integrity evaluation which will aid in future optimization of completion strategies and constitute a continuous improvement cycle for other wells. The subject well faced potential integrity related uncertainties due to fishing and cementing related issues. A three-tier approach was adopted to develop the blueprint, starting off with problem identification with respect to the various operations and incidents that occurred on this well. Next, based on the anticipated problems, associated solutions to evaluate the same were investigated by considering the technologies and standard procedures practiced by the industry. Finally, based on the previous two steps, a multi-physics approach was adopted that makes use of a combination of pulse-echo and flexural ultrasonic analysis, in addition to multiple well integrity workflows. Consequently, combination of flexural attenuation and acoustic impedance allows for a comprehensive evaluation of the medium behind the casing through the Solid-Liquid-Gas map. Simultaneously, it is possible to quantify casing thickness and internal radius variations through pulse-echo amplitude and resonance frequency characterization. Furthermore, the Third-Interface-Echo analysis is conducted to determine annulus geometry descriptions and produce a unique in-situ casing centralization measurement. The proposed well integrity blueprint contains various building blocks that are key to evaluation processes and provide a linkage-based approach to delineate potential problems. Accordingly, application of this blueprint illustrated the investigative approach it delivers with respect to cement barrier classification and casing condition assessment

Analysis Behind Casing to Assess Zonal Isolation and Casing Deterioration in a High Pressure Exploratory Well - ABC to Z of Well Integrity Barrier Evaluation

2021 ◽  
Author(s):  
Hassaan Ahmed ◽  
Mohammad Rasheed Khan ◽  
Abdul Bari ◽  
Kamran Rashid ◽  
Syed Dost Ali ◽  
...  
Keyword(s):  
Flexural Wave ◽  
Metal Loss ◽  
Case Scenario ◽  
Worst Case ◽  
Flexural Mode ◽  
Well Integrity ◽  
Casing Wear ◽  
Drag Analysis ◽  
Pulse Echo

Abstract The UHP exploratory well subject of this study faced with myriad challenges, including fishing, side-tracking, and other undesirable incidents with consequences to the 9-7/8" production casing. Torque and drag analysis, preliminary casing wear simulations, and actual drilling parameters pointed towards multiple uncertainties concerning barrier integrity. Consequently, a multi-physics evaluation was conducted including well-integrity logs in a combination of thickness-mode with flexural-mode of the casing. Signals from these independent measurements are then processed to provide robust interpretation of solid-liquid-gas behind casing using acquired flexural attenuation and acoustic impedance data. In addition, casing wear is quantified by thickness changes measured through the resonance frequency of the waveform and represented in the form of a joint-by-joint corrosion summary, reporting the average metal loss. Furthermore, propagation of flexural wave-fronts as it leaks to the third interface is tracked to produce a unique image of the annulus geometry in terms of casing eccentricity and acoustic velocity of the medium. Subsequently, the former, provides a quantifiable, unique in-situ casing standoff measurement to be used for centralization evaluation. Application of the developed data-integrated workflow allowed for comprehensively analyzing well integrity barrier condition. Cement barriers were assessed with confidence by flexural imaging, which were difficult to determine solely with pulse-echo. Additionally, annulus imaging using third interface-echo (TIE) helped in characterizing the potential causes of casing wear and quality of cement behind casing by providing actual in-situ casing standoff. It was observed that casing wear was at the low side of the wellbore where the casing had the least standoff as shown by flexural waveform TIE arrivals. Moreover, high percentage of metal loss was correlated to regions with centralization lower than 40-50%. Integration of these results with casing side forces and remaining casing strength (under worst case scenario) was performed to evaluate casing endurance for future drilling, production, and injection operations.

Enhancing the Portal Experience

2010 ◽  
Vol 2 (2) ◽  
pp. 12-25 ◽  
Author(s):  
Joe Lamantia
Keyword(s):  
Best Practices ◽  
User Experience ◽  
Building Blocks ◽  
Business Practices ◽  
Design Framework ◽  
Enterprise 2.0 ◽  
Social Business ◽  
The Third ◽  
User Value

This article presents strategies for enhancing the long-term business and user value of portals as the third in a series of articles describing a Portal Design Framework. This article identifies essential Enterprise 2.0 functionality for collaboration and dialog—capabilities that support emerging Social Business practices—included in the Building Blocks Design Framework. The author discusses portal management and governance best practices and describes strategies for maintaining and enhancing the user experience of portals designed using the Building Blocks Framework.

scholarly journals An ANP-Balanced Scorecard Methodology to Quantify the Impact of TQM Elements on Organisational Strategic Sustainable Development: Application to an Oil Firm

2020 ◽  
Vol 12 (15) ◽  
pp. 6207
Author(s):  
Carla Andrade Arteaga ◽  
Raúl Rodríguez-Rodríguez ◽  
Juan-José Alfaro-Saiz ◽  
María-José Verdecho
Keyword(s):  
Sustainable Development ◽  
Balanced Scorecard ◽  
Global Analysis ◽  
Building Blocks ◽  
Analytic Network Process ◽  
Management Tool ◽  
Integrated Analysis ◽  
Total Quality ◽  
Strategic Objectives ◽  
The Impact

This paper presents a methodology for quantifying the impact of Total Quality Management TQM elements on organisational strategic sustainable development, integrating within it the well-known strategic management tool of Balanced Scorecard to represent the strategic part of the organisations, and the multi-criteria technique Analytic Network Process (ANP) to identify and quantify the mentioned impact. Additionally, the application of TQM generates directly some organisational improvements—or outputs—which help model a decisional ANP network constituted by all three building blocks—TQM elements, strategic objectives and outputs—and their interrelationships. The application of the methodology to an oil firm carried out by an expert group offered, from a decision-making point of view, meaningful results that were developed following three different analyses: Global analysis, which identified the global weight of each variable; Analysis of Influences, which established sound cause–effect relationships between the variables to identify the elements—TQM and outputs—that are more important to achieve the strategic objectives; and the Integrated analysis, which pointed out which TQM elements should be fostered in order to achieve the most important sustainable strategic objectives. Finally, it is suggested to apply the methodology to other types of size and sector activity organisations, as well as to use other techniques that introduce fuzzy elements.

WENO-TVD schemes for hyperbolic conservation laws

Analysis ◽  
2007 ◽  
Vol 27 (1) ◽  
Author(s):  
Yousef Hashem Zahran
Keyword(s):  
Conservation Laws ◽  
Hyperbolic Conservation Laws ◽  
Building Blocks ◽  
Second Order ◽  
Third Order ◽  
Weno Schemes ◽  
Hyperbolic Conservation ◽  
Systematic Assessment ◽  
The Third ◽  
Seventh Order

The purpose of this paper is twofold. Firstly we carry out a modification of the finite volume WENO (weighted essentially non-oscillatory) scheme of Titarev and Toro [14] and [15].This modification is done by using two fluxes as building blocks in spatially fifth order WENO schemes instead of the second order TVD flux proposed by Titarev and Toro [14] and [15]. These fluxes are the second order TVD flux [19] and the third order TVD flux [20].Secondly, we propose to use these fluxes as a building block in spatially seventh order WENO schemes. The numerical solution is advanced in time by the third order TVD Runge–Kutta method. A way to extend these schemes to general systems of nonlinear hyperbolic conservation laws, in one and two dimension is presented. Systematic assessment of the proposed schemes shows substantial gains in accuracy and better resolution of discontinuities, particularly for problems involving long time evolution containing both smooth and non-smooth features.

Oligosiloxanediols as building blocks for supramolecular chemistry: hydrogen-bonded adducts with amines form supramolecular structures in zero, one and two dimensions

2000 ◽  
Vol 56 (2) ◽  
pp. 273-286 ◽  
Author(s):  
Brian O'Leary ◽  
Trevor R. Spalding ◽  
George Ferguson ◽  
Christopher Glidewell
Keyword(s):  
Hydrogen Bonds ◽  
Supramolecular Chemistry ◽  
Building Blocks ◽  
Two Dimensions ◽  
Supramolecular Structures ◽  
Structural Motif ◽  
Two Dimensional ◽  
The Third ◽  
A Chain ◽  
Hydrogen Bonded

The structure of 1,1,3,3,5,5-hexaphenyltrisiloxane-1,5-diol–pyrazine (4/1), (C36H32O4Si3)4·C4H4N2 (1), contains finite centrosymmetric aggregates; the diol units form dimers, by means of O—H...O hydrogen bonds, and pairs of such dimers are linked to the pyrazine by means of O—H...N hydrogen bonds. In 1,1,3,3,5,5-hexaphenyltrisiloxane-1,5-diol–pyridine (2/3), (C36H32O4Si3)2·(C5H5N)3 (2), the diol units are linked into centrosymmetric pairs by means of disordered O—H...O hydrogen bonds: two of the three pyridine molecules are linked to the diol dimer by means of ordered O—H...N hydrogen bonds, while the third pyridine unit, which is disordered across a centre of inversion, links the diol dimers into a C 3 3(9) chain by means of O—H...N and C—H...O hydrogen bonds. In 1,1,3,3-tetraphenyldisiloxane-1,3-diol–hexamethylenetetramine (1/1), (C24H22O3Si2)·C6H12N4 (3), the diol acts as a double donor and the hexamethylenetetramine acts as a double acceptor in ordered O—H...N hydrogen bonds and the structure consists of C 2 2(10) chains of alternating diol and amine units. In 1,1,3,3-tetraphenyldisiloxane-1,3-diol–2,2′-bipyridyl (1/1), C24H22O3Si2·C10H8N2 (4), there are two independent diol molecules, both lying across centres of inversion and therefore both containing linear Si—O—Si groups: each diol acts as a double donor of hydrogen bonds and the unique 2,2′-bipyridyl molecule acts as a double acceptor, thus forming C 2 2(11) chains of alternating diol and amine units. The structural motif in 1,1,3,3-tetraphenyldisiloxane-1,3-diol–pyrazine (2/1), (C24H22O3Si2)2·C4H4N2 (5), is a chain-of-rings: pairs of diol molecules are linked by O—H...O hydrogen bonds into centrosymmetric R 2 2(12) dimers and these dimers are linked into C 2 2(13) chains by means of O—H...N hydrogen bonds to the pyrazine units. 1,1,3,3-Tetraphenyldisiloxane-1,3-diol–pyridine (1/1), C24H22O3Si2·C5H5N (6), and 1,1,3,3-tetraphenyldisiloxane-1,3-diol–pyrimidine (1/1), C24H22O3Si2·C4H4N2 (7), are isomorphous: in each compound the amine unit is disordered across a centre of inversion. The diol molecules form C(6) chains, by means of disordered O—H...O hydrogen bonds, and these chains are linked into two-dimensional nets built from R 6 6(26) rings, by a combination of O—H...N and C—H...O hydrogen bonds.

Application of Pattern Recognition Techniques to Breast Cancer Detection: Ultrasonic Analysis of 100 Pathologically Confirmed Tissue Areas

1982 ◽  
Vol 4 (4) ◽  
pp. 378-396 ◽  
Author(s):  
Morris S. Good ◽  
Joseph L. Rose ◽  
Barry B. Goldberg
Keyword(s):  
Pattern Recognition ◽  
Ultrasonic Pulse ◽  
Waveform Analysis ◽  
Algorithm Performance ◽  
Linear Discriminant ◽  
Pattern Recognition Techniques ◽  
Pattern Recognition Methods ◽  
Jackknife Procedure ◽  
Pulse Echo

Ultrasonic pulse-echo rf waveform analysis and selected pattern recognition methods were applied to classification of breast tissue. Emphasis was placed on the classification of solid tissue areas since fluid areas are easily identified by present B-scan techniques. Pattern recognition techniques such as the Fisher Linear Discriminant (FLD), Probability Density Function (PDF) curves, jackknife estimate and committee vote were used to construct and evaluate a two class algorithm, malignant versus benign tissue areas. A data base consisting of frequency domain features from 100 pathologically confirmed tissue areas from 87 patients were used to train the algorithm. Algorithm performance was acquired via the generalized jackknife procedure to significantly reduce the bias frequently encountered in algorithm evaluation. Estimated values of algorithm performance are sensitivity and specificity values of 96 percent and 68 percent, respectively.

scholarly journals Provision of an integrated data analysis platform for computational neuroscience experiments

2014 ◽  
Vol 16 (3) ◽  
pp. 150-169 ◽  
Author(s):  
Kamran Munir ◽  
Saad Liaquat Kiani ◽  
Khawar Hasham ◽  
Richard McClatchey ◽  
Andrew Branson ◽  
...  
Keyword(s):  
Data Analysis ◽  
Computational Neuroscience ◽  
Image Data ◽  
Building Blocks ◽  
Study Data ◽  
Scientific Workflow ◽  
Integrated Analysis ◽  
Data Sets ◽  
Biomedical Data ◽  
Content Type

Purpose – The purpose of this paper is to provide an integrated analysis base to facilitate computational neuroscience experiments, following a user-led approach to provide access to the integrated neuroscience data and to enable the analyses demanded by the biomedical research community. Design/methodology/approach – The design and development of the N4U analysis base and related information services addresses the existing research and practical challenges by offering an integrated medical data analysis environment with the necessary building blocks for neuroscientists to optimally exploit neuroscience workflows, large image data sets and algorithms to conduct analyses. Findings – The provision of an integrated e-science environment of computational neuroimaging can enhance the prospects, speed and utility of the data analysis process for neurodegenerative diseases. Originality/value – The N4U analysis base enables conducting biomedical data analyses by indexing and interlinking the neuroimaging and clinical study data sets stored on the grid infrastructure, algorithms and scientific workflow definitions along with their associated provenance information.

scholarly journals The Needlet CMB Trispectrum

2014 ◽  
Vol 10 (S306) ◽  
pp. 48-50 ◽  
Author(s):  
Antonino Troja ◽  
Simona Donzelli ◽  
Davide Maino ◽  
Domenico Marinucci
Keyword(s):  
Correction Term ◽  
Building Blocks ◽  
Statistical Properties ◽  
Efficient Estimation ◽  
Third Order ◽  
Instrumental Noise ◽  
The Third ◽  
Natural Building

AbstractWe propose a computationally feasible estimator for the needlet trispectrum, which develops earlier work on the bispectrum by Donzelli et al. (2012). Our proposal seems to enjoy a number of useful properties, in particular a) the construction exploits the localization properties of the needlet system, and hence it automatically handles masked regions; b) the procedure incorporates a quadratic correction term to correct for the presence of instrumental noise and sky-cuts; c) it is possible to provide analytic results on its statistical properties, which can serve as a guidance for simulations. The needlet trispectrum we present here provides the natural building blocks for the efficient estimation of nonlinearity parameters on CMB data, and in particular for the third order constants gNL and τNL.

Synthesis of the thymidine building blocks for a nonhydrolyzable DNA analogue

1992 ◽  
Vol 70 (5) ◽  
pp. 1573-1580 ◽  
Author(s):  
Stephen H. Kawai ◽  
Daguang Wang ◽  
George Just
Keyword(s):  
Building Blocks ◽  
The Third ◽  
Branched Chain

The 3′-deoxy-3′-C-(2″-hydroxyethyl)thymidine derivatives 4 and 13 were efficiently synthesized from either thymidine via a known 3′-radical allylation, or from the branched-chain furanose 5 involving the removal of the 2′-hydroxyl after stereospecific nucleosidation. The 5′-deoxy-5′-thiothymidine 20 was prepared via a regiospecific Mitsunobu coupling, providing the third unit required for the synthesis of sulfide-linked DNA analogues.

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