Successful Implementation of Automated Managed Pressure Drilling and Managed Pressure Cementing Techniques in the Troublesome Intermediate and Reservoir Sections of a Remote Well in the Peruvian Jungle Eliminates Wellbore Instability, Severe Fluid Losses, and Differential Sticking

2017 ◽  
Author(s):  
B. Soto ◽  
O. Neyra ◽  
C. Rojas ◽  
J. C. Caro ◽  
S. Garcia ◽  
...  
Keyword(s):  
Successful Implementation ◽  
Wellbore Instability ◽  
Managed Pressure Drilling ◽  
Fluid Losses ◽  
Cementing Techniques

Successful CWD Campaign in Turnkey Project with Potential Utilisation for Well Construction Optimisation

2021 ◽  
Author(s):  
Louis Frederic Antoine Champain ◽  
Syed Zahoor Ullah ◽  
Alexey Ruzhnikov
Keyword(s):  
Cost Effective ◽  
Drill String ◽  
Successful Implementation ◽  
Delivery Time ◽  
Wellbore Instability ◽  
Third Phase ◽  
Drilling Parameters ◽  
Open Hole ◽  
Bottom Hole Assembly ◽  
Full Throttle

Abstract Drilling and completion of the surface and intermediate sections in some fields is extremely challenging due to wellbore instability, especially accomplished with complete losses. Such circumstances lead to several time-consuming stuck pipe events, when existing standard ways of drilling did not lead to a permanent resolution of the problems. After exhausting the available conventional techniques without sustainable success, unorthodox solutions were required to justify the well delivery time and cost. Here comes the Casing While Drilling (CwD), being the most time and cost-effective solution to wellbore instability. CwD is introduced at full throttle aiming at the well cost reduction and well quality improvement. The implementation plan was divided in three phases. The first phase was a remedial solution to surface and intermediate sections drilling and casing off to prevent stuck pipe events and provide smooth well delivery performances. After successful implementation of CwD first phase, CwD was taken to the next level by shifting it from a mitigation to an optimization measure. Each step of CwD shoe-to-shoe operations was analysed to improve its performances: drill-out (D/O) of 18⅝-in shoe track with CwD, optimum drilling parameters per formation and CwD bit design. Implemented in 19 wells, CwD shoe-to-shoe performances have been brought up or even above standard rotary bottom hole assembly (BHA) benchmark. Planning for third phase is undergoing whereby CwD is aiming to optimize a well construction to reduce well delivery time, by combining surface and intermediate sections thus eliminating one casing string. Numerous challenges are being worked on including open hole (OH) isolation packer which conform to and seal with the borehole uneven surface. Special "for purpose built" expandable steel packer and stage tool have been manufactured and qualified for the specific application. A candidate well has been chosen and agreed for first trial. The key areas of improvement include, drilling and casing off the surface and intermediate sections while competing with standard rotary BHA performances and slimming down the well profile towards tremendous time and costs savings. This paper encompasses details of constructions of various wells with sufficient contingencies to combat any expected hole problems without compromising the well quality while keeping the well within budget and planned time. It also provides an analysis of the well trials that were executed during the implementation of first and second phases of CwD implementation and the captured lessons learnt which are being carried forward to the next phase. This paper provides the technique on how CwD can be used to help with three aspects of drilling, successfully mitigating holes problems by reducing OH exposure time and to eliminate drill string tripping and modifying conventional casing design to reduce well time and cost by eliminating one casing string.

Successful Implementation of Managed Pressure Drilling Technology Under the Conditions of Catastrophic Mud Losses in the Kuyumbinskoe Field (Russian)

2019 ◽  
Author(s):  
Aydar Galimkhanov ◽  
Denis Okhotnikov ◽  
Leyb Ginzburg ◽  
Andrey Bakhtin ◽  
Yuliy Sidorov ◽  
...  
Keyword(s):  
Successful Implementation ◽  
Managed Pressure Drilling ◽  
Drilling Technology

Successful Implementation of Managed Pressure Drilling Technology Under the Conditions of Catastrophic Mud Losses in the Kuyumbinskoe Field

2019 ◽  
Author(s):  
Aydar Galimkhanov ◽  
Denis Okhotnikov ◽  
Leyb Ginzburg ◽  
Andrey Bakhtin ◽  
Yuliy Sidorov ◽  
...  
Keyword(s):  
Successful Implementation ◽  
Managed Pressure Drilling ◽  
Drilling Technology

Successful Implementation of Managed Pressure Drilling and Managed Pressure Cementing Techniques in Fractured Carbonate Formation Prone to Total Lost Circulation in Far North Region

2021 ◽  
Author(s):  
Zhanna Kazakbayeva ◽  
Almas Kaidarov ◽  
Andrey Magda ◽  
Fuad Aliyev ◽  
Harshad Patil ◽  
...  
Keyword(s):  
Real Time ◽  
Successful Implementation ◽  
Integrity Test ◽  
Lost Circulation ◽  
Far North ◽  
Carbonate Formation ◽  
Managed Pressure Drilling ◽  
Geological Conditions ◽  
Minor Losses ◽  
Bottomhole Pressure

Abstract Drilling reservoir section in the oilfield located in Far North region is challenged with high risks of mud losses ranging from relatively minor losses to severe lost circulation. Numerous attempts to cure losses with traditional methods have been inefficient and unsuccessful. This paper describes implementation of Managed Pressure Drilling (MPD) and Managed Pressure Cementing (MPC) techniques to drill 6-1/8″ hole section, run and cement 5″ liner managing bottomhole pressure and overcoming wellbore construction challenges. Application of MPD technique enabled drilling 6-1/8″ hole section with statically underbalanced mud holding constant bottom hole pressure both in static and dynamic conditions. The drilling window uncertainty made it difficult to plan for the correct mud weight (MW) to drill the section. The MW and MPD design were chosen after risk assessment and based on the decisions from drilling operator. Coriolis flowmeter proved to be essential in deciphering minor losses and allowed quick response to changing conditions. Upon reaching target depth, the well was displaced to heavier mud in MPD mode prior to open hole logging and MPC. MPD techniques allowed the client to drill thru fractured formation without losses or gains in just a couple of days as compared to the months of drilling time the wells usually took to mitigate wellbore problems, such as total losses, kicks, differential sticking, etc. This job helped the client to save time and reduce well construction costs while optimizing drilling performance. Conventional cementing was not feasible in previous wells because of risks of losses, which were eliminated with MPC technique: bottomhole pressure (BHP) was kept below expected loss zones that provided necessary height of cement and a good barrier required to complete and produce the well. Successful zonal isolation applying MPC technique was confirmed by cement bond log and casing integrity test. Throughout the project, real-time data transmission was available to the client and engineering support team in town. This provided pro-active monitoring and real-time process optimization in response to wellbore changes. MPD techniques helped the client to drill the well in record time with the lowest possible mud weight consequently reducing mud requirements. The MPD system allowed obtaining pertinent reservoir data, such as pore pressure and fracture pressure gradients in uncertain geological conditions.

Managed Pressure Drilling (MPD) Solves Conventional Drilling Problems at the Xanab Offshore Field, which Presents Severe Drilling Fluid Losses

2011 ◽  
Author(s):  
Silvestre Ramirez ◽  
Rafael Aguilar Arias ◽  
Roberto Horacio Herrera ◽  
Simon Bevilacqua ◽  
Guillermo Barrera ◽  
...  
Keyword(s):  
Drilling Fluid ◽  
Managed Pressure Drilling ◽  
Offshore Field ◽  
Fluid Losses ◽  
Conventional Drilling

Buzios Presalt Wells: Delivering Intelligent Completion In Ultra-Deepwater Carbonate Reservoirs

2021 ◽  
Author(s):  
Eduardo Schnitzler ◽  
Luciano Ferreira Gonçalez ◽  
Roger Savoldi Roman ◽  
Marcello Marques ◽  
Fábio Rosas Gutterres ◽  
...  
Keyword(s):  
Fluid Loss ◽  
High Productivity ◽  
Well Completion ◽  
Well Design ◽  
Managed Pressure Drilling ◽  
Engineering Team ◽  
Open Hole ◽  
Improved Performance ◽  
Loss Control ◽  
Fluid Losses

Abstract This paper describes the challenges faced on the deployment of intelligent well completion (IWC) systems in some of the wells built in Buzios field, mostly related to heavy fluid losses that occurred during the well construction. It also presents the solutions used to overcome them. This kind of event affects not only drilling and casing cementing operations, but may also prevent a safe and efficient installation of the completion system as initially designed. The IWC design typically used in Brazilian pre-salt areas comprises cased hole wells. Perforation operations must be performed before installing the integral completion system, as it does not include a separation between upper and lower completion. Therefore, the reservoir remains communicated to the wellbore during the whole completion installation process, frequently requiring prior fluid loss control as to allow safe deployment. Rock characteristics found in this field make it difficult to effectively control losses in some of the wells, requiring the use of different well construction practices that led to the development of some new well designs. The well engineering team developed a new well concept, where a separated lower completion system is installed in open hole, delivering temporary reservoir isolation. This new well architecture not only delivers reduced drilling and completion duration and costs, but also provides the IWC features in wells with major fluid losses. This is possible by the use of multiple managed pressure drilling (MPD) techniques when required, which were considered since the initial design phase. Safe and effective construction of some wells in pre-salt fields was considered not feasible before the adoption of MPD solutions, both for drilling and completions. Other important aspects considered on the new well design are the large thickness and high productivity of Buzios field reservoirs, as well as the need of some flexibility to deal with uncertainties. Finally, the new completion project was also designed to improve performance and safety on future challenging heavy workover interventions. The well construction area has gradually obtained improved performance in Buzios field with the adoption of the new practices and well design presented in this paper. The new solutions developed for Buzios field have set a new drilling and completion philosophy for pre-salt wells, setting the grounds for future projects. The improved performance is essential to keep these deepwater projects competitive, especially in challenging oil price scenarios. One of the groundbreaking solutions used is the possibility of installing the lower completion using managed pressure drilling techniques.

Some applications of electron beam microanalysis techniques in VLSI process evaluation

1983 ◽  
Vol 41 ◽  
pp. 160-161
Author(s):  
Simon Thomas
Keyword(s):  
Integrated Circuits ◽  
Process Evaluation ◽  
Large Scale ◽  
Technology Development ◽  
Analytical Techniques ◽  
Successful Implementation ◽  
Analysis Of Failures ◽  
Characterization Of Materials ◽  
Circuits Vlsi

Trends in the technology development of very large scale integrated circuits (VLSI) have been in the direction of higher density of components with smaller dimensions. The scaling down of device dimensions has been not only laterally but also in depth. Such efforts in miniaturization bring with them new developments in materials and processing. Successful implementation of these efforts is, to a large extent, dependent on the proper understanding of the material properties, process technologies and reliability issues, through adequate analytical studies. The analytical instrumentation technology has, fortunately, kept pace with the basic requirements of devices with lateral dimensions in the micron/ submicron range and depths of the order of nonometers. Often, newer analytical techniques have emerged or the more conventional techniques have been adapted to meet the more stringent requirements. As such, a variety of analytical techniques are available today to aid an analyst in the efforts of VLSI process evaluation. Generally such analytical efforts are divided into the characterization of materials, evaluation of processing steps and the analysis of failures.

Moving From Interprofessional Education Toward Interprofessional Practice: Bridging the Translation Gap

2019 ◽  
Vol 4 (5) ◽  
pp. 971-976
Author(s):  
Imran Musaji ◽  
Trisha Self ◽  
Karissa Marble-Flint ◽  
Ashwini Kanade
Keyword(s):  
Interprofessional Education ◽  
Interprofessional Collaboration ◽  
Evaluation Model ◽  
Implementation Strategies ◽  
Future Research ◽  
Successful Implementation ◽  
Interprofessional Practice ◽  
Translational Model ◽  
Key Stakeholders ◽  
Clear Identification

Purpose The purpose of this article was to propose the use of a translational model as a tool for identifying limitations of current interprofessional education (IPE) research. Translational models allow researchers to clearly define next-step research needed to translate IPE to interprofessional practice (IPP). Method Key principles, goals, and limitations of current IPE research are reviewed. A popular IPE evaluation model is examined through the lens of implementation research. The authors propose a new translational model that more clearly illustrates translational gaps that can be used to direct future research. Next steps for translating IPE to IPP are discussed. Conclusion Comprehensive reviews of the literature show that the implementation strategies adopted to date have fostered improved buy-in from key stakeholders, as evidenced by improved attitudes and perceptions toward interprofessional collaboration/practice. However, there is little evidence regarding successful implementation outcomes, such as changed clinician behaviors, changed organizational practices, or improved patient outcomes. The authors propose the use of an IPE to IPP translational model to facilitate clear identification of research gaps and to better identify future research targets.

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