Single Trip Deployment of Multistage Completion Liners Through the Use of Interventionless Flotation Collars

2021 ◽  
pp. 1-8
Author(s):  
William Tait ◽  
Mohammed Munawar
Keyword(s):  
Best Practices ◽  
Applied Pressure ◽  
Drilling Fluids ◽  
Western Canada ◽  
Tempered Glass ◽  
Close Collaboration ◽  
Flow Area ◽  
Paper Detail ◽  
The Us ◽  
Liner System

Summary In difficult wellbores, the traditional method for deploying liners was to run drillpipe. The case studies discussed in this paper detail an alternative method to deploy liners in a single trip on the tieback string so the operator can reduce the overall costs of deployment. Previously, this was not often practical because the tieback string weight could not overcome the wellbore friction in horizontal applications. In each case, a flotation collar is required to ensure there is enough hookload for the deployment of the liner system. The flotation collars used are an interventionless design using a tempered glass barrier that shatters at a predetermined applied pressure. The glass debris is between 5 and 10 mm in diameter and can be easily circulated through the well without damaging downhole components. This is done commonly on a cemented liner and cemented monobore installations, but more rarely with openhole multistage completions. The authors of this paper have overseen thousands of cemented applications of this technology in Western Canada, the US onshore, Latin America, and the Middle East. For openhole multistage completions, the initial installation typically requires a ball drop activation tool at the bottom of the well to set the hydraulically activated equipment above. The effects of circulating the glass debris through one specific style of activation tool were investigated. Activation tools typically have a limited flow area and could prematurely close if the glass debris accumulates. Premature closing of the tool would leave drilling fluids in contact with the reservoir, potentially harming production. The testing was successfully completed, and the activation tool showed no signs of loading. This resulted in a full-scale trial in the field, where a 52-stage, openhole multistage fracturing liner was deployed using this technology. Through close collaboration with the operator, an acceptable procedure was established to safely circulate the glass debris and further limit the risk of prematurely closing the activation tool. This paper discusses the openhole and cemented multistage fracturing completion deployment challenges, laboratory testing, and field qualification trials for the single trip deployed system. It also highlights operational procedures and best practices when deploying the system in this fashion.

Single Trip Deployment of Multi-Stage Completion Liners Through the Used of Interventionless Flotation Collars

2021 ◽  
Author(s):  
William Tait ◽  
Mohammed Munawar
Keyword(s):  
Drill Pipe ◽  
Applied Pressure ◽  
Drilling Fluids ◽  
Case Scenario ◽  
Flow Area ◽  
Worst Case ◽  
Multi Stage ◽  
Liner System ◽  
Open Hole ◽  
Validation Tests

Abstract Due to challenging market conditions, the drilling and completion industry has needed to put forth innovative deployment strategies in horizontal multi-stage completions. In difficult wellbores, the traditional method for deploying liners was to run drill pipe. The case studies discussed in this paper detail an alternative method to deploy liners in a single trip on the tieback string so the operator can reduce the overall costs of deployment. Previously, this was not practical because the tieback string weight could not overcome the wellbore friction in horizontal applications. In each case, a flotation collar is required to ensure there is enough hook load for deployment of the liner system. The flotation collars used are an interventionless design, utilizing a tempered glass barrier that shatters at a pre-determined applied pressure. The glass debris can be easily circulated through the well without damaging downhole components. This is done commonly on cemented liner and cemented monobore installations, but more rarely with open hole multi-stage completions. For open hole multi-stage completions, the initial installation typically requires an activation tool at the bottom of the well to set the hydraulically activated equipment above. Multiple validation tests were completed prior to installation by using an activation tool and flotation collar to ensure the debris could be safely circulated through the internals without closing the activation tool. These activation tools have relatively limited flow area and could cause an issue if the glass debris were to accumulate and shift it closed prematurely. Premature closing of the tool would leave expensive drilling fluids in contact with the reservoir, potentially harming production. For the test, the flotation collar was placed only two pup joints away from the activation tool, resulting in a worst-case scenario where a large amount of debris could potentially encounter the internals of the activation tool at one time. In a downhole environment the flotation collar is typically installed near the build or heel of the well, depending on wellbore geometry. The testing was successfully completed, and the activation tool showed no signs of loading. This resulted in a full-scale trial in the field where a 52 stage, open hole (OH) multi-stage fracturing (MSF) liner was deployed using this technology. Through close collaboration with the operator, an acceptable procedure was established to safely circulate the glass debris and further limit the risk of prematurely closing the activation tool. This paper discusses the OH and cemented MSF deployment challenges, detailed lab testing, and field qualification trials for the single trip deployed system. It also highlights operational procedures and best practices when deploying the system in this fashion. A method to calibrate a torque and drag model will also be explored as part of this discussion.

Mud-Sealing Cement System Delivers Notable Cement Bond Log Result in a Challenging Offshore Horizontal 4 ½-in Liner: A New Technology Case Study

2021 ◽  
Author(s):  
Degaul Nana Nzoutchoua ◽  
Carl R. Johnson ◽  
Armelle Boukoulou Mounguele ◽  
Chibuzor Onyia ◽  
Giovanni Rizza ◽  
...  
Keyword(s):  
Best Practices ◽  
Oil And Gas ◽  
New Technology ◽  
Drilling Fluids ◽  
Directional Drilling ◽  
Drilling Tool ◽  
Cement System ◽  
Liner System ◽  
The Impact ◽  
Pipe Rotation

Abstract A 1575m [4922-ft] offshore horizontal 4-½-in. liner cemented using a mud-sealing cement system (MSCS) resulted in an outstanding cement bond log result. The decision to use the MSCS was taken after realizing that four offset liners, previously cemented using conventional cement systems, did not yield acceptable cement bond log results despite following oil and gas cementing industry best practices, including pipe rotation. This paper documents a comparison of six offset horizontal liners, focusing on the impact of the MSCS technology. The paper focuses on several 4-½-in. liners in the same field. The wells were drilled by a similar rig and had similar well profiles. The drilling bit, directional drilling tool, drilling fluids system, logging tool, centralizer type and pumping sequences were comparable across all wells. In addition, the logging company performing the cement bond log evaluation was not the same company performing the cementing service. After the first MSCS-cemented well, the subsequent well used a conventional cement system to isolate the 4-½-in. liner and tighten the cementing best practices. This was initiated to irrefutably confirm the impact of MSCS technology on the quality of cement bond log recorded on the earlier well. The cement bond log recorded from the well isolated with MSCS is easily identified among the six comparison wells even though the cementing operation faced several well challenges, includinga single dart liner system implementation (for all liners), which can promote the intermixing of slurry with fluid ahead while travelling down the pipemud losses in the drilling phase, which resulted in a reduction of the displacement rate to control ECD during cement placement. The bond log results of the other wells were qualified as poor or fair, even though significant precautions were taken to optimize zonal isolation. These efforts included batch mixing the spacer and slurry, using more than one centralizer per casing joint, and implementing pipe rotation during pre-job circulation and job execution when the torque limit allowed. This multi-well comparison based on field results brings solid evidence of the MSCS technology interacting with the residual layer of nonaqueous fluid (NAF) when well conditions reach or exceed the practical normative limitations for mud removal. This in-situ interaction generates a viscous paste that positively impacts the bond log response and bolsters the isolation between zones of interest. The result has yielded a step forward in the provision of a dedicated barrier technology for horizontal or highly deviated sections.

Moving the Needle: Cultivating Systemic Change in Juvenile Services

2021 ◽  
pp. 89-100
Author(s):  
Kellie Rhodes ◽  
Aisland Rhodes ◽  
Wayne Bear ◽  
Larry Brendtro
Keyword(s):  
Best Practices ◽  
Direct Care ◽  
Clinical Services ◽  
Juvenile Courts ◽  
Community Based ◽  
Complex Needs ◽  
Entry Level ◽  
Community Based Programs ◽  
The Us ◽  
National Partnership

Approximately 1.7 million delinquency cases are disposed in juvenile courts annually (Puzzanchera, Adams, & Sickmund, 2011). Of these youth, tens of thousands experience confinement in the US (Sawyer, 2019), while hundreds of thousands experience probation or are sentenced to community based programs (Harp, Muhlhausen, & Hockenberry, 2019). These youth are placed in the care of programs overseen by directors and clinicians. A survey of facility directors and clinicians from member agencies of the National Partnership for Juvenile Services (NPJS) Behavioral Health Clinical Services (BHCS) committee identified three primary concerns practitioners face in caring for these youth; 1) low resources to recruit and retain quality staff, 2) training that is often not a match for, and does not equip staff to effectively manage the complex needs of acute youth, and 3) the perspective of direct care as an unskilled entry-level position with limited impact on youth’s rehabilitation. This article seeks to address these issues and seeks to highlight potential best practices to re-solve for those obstacles within juvenile services.

Capital budgeting practices: evidence from Korea

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Taeyeon Kim ◽  
Hongbok Lee ◽  
Kwangwoo Park ◽  
Doug Waggle
Keyword(s):  
Best Practices ◽  
Capital Budgeting ◽  
Developed Countries ◽  
Financial Advisors ◽  
Cost Of Equity ◽  
Content Type ◽  
Capital Costs ◽  
Developed Markets ◽  
The Us ◽  
Ceo Age

PurposeThe authors present the results of a survey on how Korean firms evaluate new projects and estimate their capital costs. The authors report how Korean firms’ capital budgeting practices compare to other developed countries and to best practices in the field of finance.Design/methodology/approachThe authors survey CFOs of major Korean firms on their capital budgeting practices. The authors then compare the results against the US and European firms and best practices of leading firms and financial advisors.FindingsThe authors find that the capital budgeting practices of Korean firms are as strong as or stronger than firms in developed markets. A majority of Korean firms use best practices techniques such as NPV, IRR and the CAPM for project evaluation and cost of equity estimation. Chaebol affiliation results in somewhat stronger capital budgeting practices. The authors also find that other factors, such as company size, leverage, CEO age and CEO education, impact capital budgeting practices.Originality/valueThis paper is the first article that comprehensively examines Korean firms' capital budgeting practices.

A review of techniques and errors involved in sound isolation testing

2021 ◽  
Vol 263 (3) ◽  
pp. 3176-3186
Author(s):  
Jameson Dickman
Keyword(s):  
Best Practices ◽  
Construction Industry ◽  
Background Noise ◽  
Green Building ◽  
Design Standards ◽  
Field Verification ◽  
The Us ◽  
New Construction ◽  
Standards And Guidelines ◽  
Review Current

Construction industry design standards are increasingly calling for new construction to be inspected and tested for compliance with design specifications after the project is built; otherwise known as the commissioning process. As part of this trend, owners, sensitive to the acoustics of their facilities, are seeking confirmation via measurements that their buildings meet sound isolation and background noise requirements, particularly when pursuing certifications under the US Green Building Council LEED standard, the WELL Building Standard, or other green building or wellness standards. In general, the error of sound isolation measurements is not officially established. This poses challenges to designers tasked with specifying assemblies and components to meet field verification requirements. This paper will briefly review current research and standards on the error of measurements such as Noise Isolation Class (NIC) and the Weighted Level Difference (D) and discuss example design standards and guidelines which do or do not account for this error. It will also propose further research topics to better define the error in sound isolation measurements and best practices when establishing or designing to sound isolation criteria in new or renovated buildings.

Virtual currency in sanctioned jurisdictions: stepping outside of SWIFT

2019 ◽  
Vol 20 (2) ◽  
pp. 39-44 ◽  
Author(s):  
Katherine Kirkpatrick ◽  
Christine Savage ◽  
Russell Johnston ◽  
Matthew Hanson
Keyword(s):  
Best Practices ◽  
Design Methodology ◽  
Virtual Currency ◽  
Content Type ◽  
The Us ◽  
Expert Analysis ◽  
Practical Implications ◽  
Foreign Assets

Purpose To understand and analyze sanctions evasion and enforcement via virtual currencies. Design/methodology/approach Discusses various jurisdictions’ attempts to further the use of virtual currency to facilitate and maximize access to international funds; analyzes the aspects that make virtual currency uniquely suited to evade sanctions; suggests best practices for industry participants to be sure to account for the differences in crypto asset structure and related risks. Findings The US Treasury Department’s Office of Foreign Assets Control (OFAC) has explicitly stated that despite virtual currency’s anonymity, industry participants are still responsible for policing and enforcing client compliance. Although sanctioned jurisdictions are thinking creatively about ways around SWIFT, the use of virtual currency to skirt sanctions presents certain challenges. Practical implications Virtual currency industry participants should understand OFAC’s specific guidance regarding compliance obligations in the cryptocurrency space, and should implement best practices and conservative measures to avoid unknowingly running afoul of sanctions laws. Originality/value Expert analysis and guidance from experienced investigations and sanctions lawyers.

scholarly journals Implementation and enforcement of smoke-free policies in public housing

2019 ◽  
Vol 34 (2) ◽  
pp. 234-246 ◽  
Author(s):  
Michelle C Kegler ◽  
Jaimie Lea ◽  
Erin Lebow-Skelley ◽  
Adrienne M Lefevre ◽  
Pam Diggs ◽  
...  
Keyword(s):  
Best Practices ◽  
Public Housing ◽  
Secondhand Smoke ◽  
Secondhand Smoke Exposure ◽  
Smoking Restriction ◽  
Structured Interviews ◽  
Early Adopters ◽  
The Us ◽  
Advance Notice ◽  
Clear Communication

Abstract Smoke-free policies such as those required by the US Department of Housing and Urban Development have the potential to reduce persistent income-related disparities in secondhand smoke exposure. To understand the implementation and enforcement process, as well as barriers and facilitators to compliance and enforcement, we conducted semi-structured interviews (n=37) with representatives from 23 Public Housing Authorities (PHAs) with some level of smoking restriction in place, along with residents from 14 of these PHAs, from January to August 2016. Residents were typically notified of the new policy through group meetings, new resident orientations and/or one-on-one discussions during lease renewal or annual recertification. Timing of implementation varied, with advanced notice of 6 months or a year most common. Enforcement typically involved a series of verbal and/or written warnings, followed by written notice of lease violation, and eventual notice of lease termination and/or eviction. Challenges in enforcement were generally classified as monitoring difficulties or legal concerns. Characterizing current practices (e.g. advance notice, clear communication of escalating consequences, cessation support and concrete evidence of violation) from early adopters sets the stage for identifying best practices and helps to ensure successful and fair implementation of smoke-free policies in subsidized housing.

scholarly journals Safe use of the EHR by medical scribes: a qualitative study

2020 ◽  
Author(s):  
Joan S Ash ◽  
Sky Corby ◽  
Vishnu Mohan ◽  
Nicholas Solberg ◽  
James Becton ◽  
...  
Keyword(s):  
Patient Safety ◽  
Best Practices ◽  
Clinical Training ◽  
Rapid Assessment ◽  
Data Gathering ◽  
Assessment Process ◽  
Healthcare Organizations ◽  
Safety Risks ◽  
The Us ◽  
Medical Scribes

Abstract Objective Hiring medical scribes to document in the electronic health record (EHR) on behalf of providers could pose patient safety risks because scribes often have no clinical training. The aim of this study was to investigate the effect of scribes on patient safety. This included identification of best practices to assure that scribe use of the EHR is not a patient safety risk. Materials and Methods Using a sociotechnical framework and the Rapid Assessment Process, we conducted ethnographic data gathering at 5 purposively selected sites. Data were analyzed using a grounded inductive/hermeneutic approach. Results We conducted site visits at 12 clinics and emergency departments within 5 organizations in the US between 2017 and 2019. We did 76 interviews with 81 people and spent 80 person-hours observing scribes working with providers. Interviewees believe and observations indicate that scribes decrease patient safety risks. Analysis of the data yielded 12 themes within a 4-dimension sociotechnical framework. Results about the “technical” dimension indicated that the EHR is not considered overly problematic by either scribes or providers. The “environmental” dimension included the changing scribe industry and need for standards. Within the “personal” dimension, themes included the need for provider diligence and training when using scribes. Finally, the “organizational” dimension highlighted the positive effect scribes have on documentation efficiency, quality, and safety. Conclusion Participants perceived risks related to the EHR can be less with scribes. If healthcare organizations and scribe companies follow best practices and if providers as well as scribes receive training, safety can actually improve.

Popular reporting: learning from the US experience

2019 ◽  
Vol 32 (1) ◽  
pp. 92-113 ◽  
Author(s):  
Francesca Manes-Rossi ◽  
Natalia Aversano ◽  
Paolo Tartaglia Polcini
Keyword(s):  
Content Analysis ◽  
Best Practices ◽  
Local Governments ◽  
Legitimacy Theory ◽  
Content Type ◽  
The Us ◽  
The Usa ◽  
The City ◽  
Qualitative Characteristics ◽  
Practical Implications

Purpose The purpose of this paper is to explore a citizen-centered tool for public accountability, the popular report (PR). Elaborating on previous studies and on content analysis of a sample of municipalities in the USA, this paper aims to identify the qualitative characteristics and content elements that PR should have to serve as a legitimation tool. Design/methodology/approach The study adopts a mixed methodology. After the analysis of previous studies on PR and best practices in US municipalities, a list of content elements and qualitative characteristics of PR is compared with results emerging from the content analysis of PR published by of a sample of municipalities in the USA. Findings The analysis reveals that the PR should embed information about the government’s sources of revenues and taxes, expenditures, cost of government services, liveability and governance of the city. Research limitations/implications The paper offers new knowledge on reporting centered on citizens, framing the analysis in the legitimacy theory. Even though the research relates only to the US context, the results may assist standard setters in preparing guidelines for local governments to communicate financial data to citizens and stimulate further research in other contexts. Practical implications The results may encourage local governments to prepare a PR suitable to discharge accountability and gain legitimation. Originality/value This study is the first to discuss the PR within a theoretical framework, in this case, legitimacy theory. Moreover, a further novelty lays in the analysis carried out on the PRs published by US municipalities in order to derive qualitative characteristics and content elements with which the PR should comply.

Sign in / Sign up

Export Citation Format

Share Document