Proven Technologies and Solutions for Successful Production Enhancement in Malaysia with Array Production Logging

2021 ◽  
Author(s):  
Valsan Vevakanandan ◽  
Angelina Jia Hui Ting ◽  
Sze Fong Kho ◽  
Chen Nyap Ho ◽  
Aaron Qun Jie Tan ◽  
...  
Keyword(s):  
Optical Sensors ◽  
Fluid Phase ◽  
Field Development ◽  
Velocity Modeling ◽  
Novel Approach ◽  
Successful Execution ◽  
Seismic Acquisition ◽  
Remedial Work ◽  
Logging Tool ◽  
Array Production

Abstract M field is a faulted anticline structure that lies in a deepwater turbidite environment. Field Development started in late 2016, with 10 oil producers and 2 water injectors. Within 2 years of production, significant GOR increase in some of the wells led to production curtailment, which has impacted the field production promise. Poor injectivity seen in one of the water injectors also led to an assumption of compartmentalization or sandface plugging/damage that required investigation. In order to evaluate intervention opportunities to mitigate against the high GORs and to determine the cause of the poor injectivity, production logging tools were proposed in four candidate wells. The objectives of the logging campaign were: To understand the gas influx profile into the well and how different compartments are contributing to the GOR Assess behaviour of G/O, O/O, O/W crossflows and their impact on reservoir depletion profile Aid decisions in requirements for downhole controls (i.e. AICD placement) vs surface controls Provide opportunity to couple PL logs with PNC logs to identify potential GOCs, estimate gas/water saturations and determine if there are any bypassed oils Based on the candidate wells, the following challenges were present: Highly-deviated/horizontal wells requiring complex conveyance solutions Multiphase flows (gas, oil and potentially water) in highly deviated conditions which further complicates fluid phase contribution calculations and velocity modeling Rig up height limitations on the platform which requires shorter logging tool strings High flowrates with tool lift limits requiring careful modelling work to ensure risks are understood and minimized In view of these challenges, a new Array Production Logging Tool (henceforth called New-APLT) was proposed as an alternative to the previous generation APLT. It has a more robust design with co-located sensors in a single module with additional optical sensors that improves flow measurement and gas detection. Additionally, screen tracers sampling was proposed in one well, which would help calibrate the tracer interpretations against actual fluid rates. The novel approach and synergistic efforts amongst many disciplines led to a successful execution of the logging campaign, and the first ever deployment of the New-APLT tool on e-line tractor. The timely results from the campaign which coincided with a 4D seismic acquisition has helped to justify downhole control options for some of the wells, and potentially helped to avoid costly remedial work on the water injector. The valuable dataset will also influence the infill development well campaign location, design and well count.

scholarly journals Preparation and characterization of cellulose paper/polypyrrole/bromophenol blue composites for disposable optical sensors

2016 ◽  
Vol 14 (1) ◽  
pp. 404-411 ◽  
Author(s):  
Débora Gonçalves
Keyword(s):  
Optical Sensors ◽  
Diffuse Reflectance Spectroscopy ◽  
Ammonia Concentration ◽  
Bromothymol Blue ◽  
Bromophenol Blue ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cellulose Paper ◽  
Novel Approach

AbstractThis manuscript describes a novel approach for the preparation of composites based on cellulose paper (CP) modified with polypyrrole (PPy) and bromophenol blue (BPB) (CP/PPy/BPB). Cellulose fibers are suitable for uniformly retaining the polymer in its doped form, once BPB can be used as a negatively charged dye. The CP/PPy/BPB composites were characterized by Raman Spectroscopy, Scanning Electron Microscopy, Spectroscopy and Dispersive Energy, and X-ray Diffraction. After characterization, they were studied for the quantification of pH and ammonia by diffuse reflectance spectroscopy. Under varying pH, different colors were verified, which ranged from yellow to blue, and an optical response for ammonia at concentrations as high as 25 ppm. The replacement of BPB by bromothymol blue (BTB) did not produce efficient color transitions and showed no sensitivity to changes in pH and ammonia concentration.

scholarly journals Multi-Sensor Satellite Data Processing for Marine Traffic Understanding

Electronics ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 152 ◽  
Author(s):  
Marco Reggiannini ◽  
Luigi Bedini
Keyword(s):  
Optical Sensors ◽  
European Space Agency ◽  
Observation System ◽  
Surveillance Systems ◽  
Space Agency ◽  
Novel Approach ◽  
Imaging Results ◽  
Early Processing ◽  
Wake Detection ◽  
Italian Space Agency

The work described in this document concerns the estimation of the kinematics of a navigating vessel. This task can be accomplished through the exploitation of satellite-borne systems for Earth observation. Indeed, Synthetic Aperture Radar (SAR) and optical sensors installed aboard satellites (European Space Agency Sentinel, ImageSat International Earth Remote Observation System, Italian Space Agency Constellation of Small Satellites for Mediterranean basin Observation) return multi-resolution maps providing information about the marine surface. A moving ship represented through satellite imaging results in a bright oblong object, with a peculiar wake pattern generated by the ship’s passage throughout the water. By employing specifically tailored computer vision methods, these vessel features can be identified and individually analyzed for what concerns geometrical and radiometric properties, backscatterers spatial distribution and the spectral content of the wake components. This paper proposes a method for the automatic detection of the vessel’s motion-related features and their exploitation to provide an estimation of the vessel velocity vector. In particular, the ship’s related wake pattern is considered as a crucial target of interest for the purposes mentioned. The corresponding wake detection module has been implemented adopting a novel approach, i.e., by introducing a specifically tailored gradient estimator in the early processing stages. This results in the enhancement of the turbulent wake detection performance. The resulting overall procedure may also be included in marine surveillance systems in charge of detecting illegal maritime traffic, combating unauthorized fishing, irregular migration and related smuggling activities.

Tunable Microring Filter Based On-Chip Interrogator for Wavelength-Modulated Optical Sensor

2013 ◽  
Vol 562-565 ◽  
pp. 265-267 ◽  
Author(s):  
Jian Yang ◽  
Chen Qiu ◽  
Qi Long Wang ◽  
Ming Hua Wang ◽  
Jian Yi Yang
Keyword(s):  
Optical Sensors ◽  
Optical Sensor ◽  
Cost Effective ◽  
Center Wavelength ◽  
Novel Approach ◽  
On Chip

We demonstrated a novel approach for the interrogation of wavelength-modulated optical sensors. The interrogator is based on a tunable on-chip microring filter. By tuning the center wavelength of the microring filter, the center wavelength of the sensor can be readout by the corresponding tuning power. This approach has the potential of constructing a compact and cost-effective interrogator with good performance.

Multi Zone Smart Well Completions Challenges in Highly Deviated Wells and Its Impact on Well Planning and Field Development

2021 ◽  
Author(s):  
Aqib Qureshi ◽  
Kushal Gupta ◽  
Salim Abdalla Al Ali ◽  
Yoshito Uchiyama ◽  
Rohit Singh Negi
Keyword(s):  
Development Strategy ◽  
Standard Procedure ◽  
Operational Parameters ◽  
Successful Operation ◽  
Field Development ◽  
Well Completion ◽  
Mandatory Requirement ◽  
Pass Through ◽  
Remedial Work ◽  
Well Completions

Abstract In multilayered reservoirs, major focus has been on the usage of smart well completion technologies to help improve recoveries, particularly with technological improvements and an increasing expanse of opportunities in more challenging and rewarding assets. The fundamental focus has been to design well completions that integrate several surface/subsurface sub zones and automate the flow control from each zone. In Multi zone Smart Completion Wells where significant investment is made to complete smart wells with remotely controlled inflow control valves (ICV), reservoir sweep & drain accessibilities becomes decisive when evaluating the efficiency of recovery and long-term field development strategy. Smart completion designs for multi-lateral wells present many challenges in terms of completion deployment and interventions in life of well. The complexity of operations increases with deviation, type of completion equipment, number of zones and planned interventions. In offshore, UAE a similar multilateral well was designed to be completed with 4 zone smart completion and had a mandatory requirement of accessibility to lower most drain (for future interventions) with the ability to plug the lower drain till future requirements arises. A solution is to utilize nipple & blanking plug in lower most drain, which was implemented in this well. Upon successful deployment of completion, plug was retrieved on coil tubing and lower drain accessibility was confirmed. However, during re-installation of blanking plug on coil tubing in deviated section, issues were encountered to pass through the ICV profiles. In attempts to pass through ICV profiles, blanking plug and running tool got disconnected from coil tubing, leaving the fish inside one of ICV valve. Several attempts were made to retrieve the blanking plug with rig on coil tubing without success by using thru-tubing fishing equipment options available in country. Well was suspend to work-out fishing strategy & evaluate availability of fishing equipment worldwide. Consideration was done for design and manufacture application specific fishing tools to perform workover with barge for such smart completion, as it includes a number of downhole components that makes its retrieval more challenging, and there are no standard procedure or provision in place to retrieve such complex completions in highly deviated section. A barge was mobilized with coil tubing, which performed the fishing operation as planned. Careful selection of equipment's, BHA and operational parameters resulted in successful retrieval of blanking plug & running tools. Accessibility to well was gain and confirmed. This paper presents the situation that was faced, the remedial work done to complete well, fishing operations and the subsequent factors considered for choice of equipment and operation on well. This paper concludes a detailed account of factors to consider for planning smart completions in horizontal multilateral wells & the successful fishing operation – an excellent example of how careful planning, dedicated project management, specialized design fishing tools, experienced personnel and a collaborative relationship between team's leads to a successful operation and prevented an extremely expensive workover of a high technology completion well.

Ensuring Success of Complex Liner Deployment Over Complete Field Development Campaign

2021 ◽  
Author(s):  
Loïc Brillaud ◽  
Florent Couliou ◽  
Kim Mathisen ◽  
Tom Rune Koløy ◽  
Chloé Lacaze ◽  
...  
Keyword(s):  
String Model ◽  
Added Value ◽  
Field Development ◽  
Complete Field ◽  
Offshore Development ◽  
Weight Transfer ◽  
Logging Tool ◽  
Productive Time ◽  
Potential Issue

Abstract This paper describes the innovative engineering workflow which has been used to ensure the safe deployment of deep production liners on long step-out wells of a deep offshore development field. It highlights the importance of accurate Torque & Drag modelling during planning and operations and provides details on how the use of downhole data assisted in understanding downhole conditions on the first wells, which allowed to optimize the running and setting procedure for the next wells of the field. For this methodology, a unique Torque & Drag stiff-string model was used to simulate the evolution of side-forces, tension, stretch, torque and twist along the string at every stage of the deployment and setting of the liner. Simulations were performed both during planning phase and operations. Once the well completed, downhole memory data from a logging tool was compared with simulations, which allowed to calibrate the model, better understand downhole conditions, and provide recommendations for the next runs. Using this methodology, the operator succeeded in deploying the liner to total depth, setting the hanger and packer successfully on all the wells of the field. These operations were performed with only 40 minutes of non-productive time throughout the campaign. The paper shows how correlating downhole data with Torque & Drag simulations highlighted areas of improvement and allowed to optimize the running and setting procedure of the liner. It also led the operator to gain confidence in the feasibility of such critical operations even on the more challenging wells. Detailed engineering and collaboration were key to this success. Such methodology can be applied on every well where weight transfer is a potential issue. As the industry is heading towards digitalization and automation, this case study is a prime example which demonstrates the added value of combining advanced physics-based simulations with time based downhole data.

Novel Approach to Anticipate Emerging Infectious Diseases Spreading and Epidemics

2018 ◽  
pp. 156-190
Keyword(s):  
Infectious Diseases ◽  
Optical Sensors ◽  
Ad Hoc ◽  
Wearable Sensors ◽  
Emerging Infectious Diseases ◽  
Monitoring Systems ◽  
Surveillance Systems ◽  
Novel Approach ◽  
Monitoring And Surveillance ◽  
Infection Monitoring

In recent years, especially in 2014, Africa, as well as the whole world, has faced an Ebola epidemic. The facts have demonstrated the weakness of the global crisis management and limitation of existing diseases prediction, prevention, monitoring, and surveillance systems and policies. From 2015 until today, many studies have been carried out and systems have been implemented to improve the global infectious diseases monitoring. Most proposed monitoring systems consist of using wearable sensors for the remote sensing vital parameter in an individual. These monitoring systems are, however, limited. This chapter proposes a novel infection monitoring and prevention system using a hybrid crowdsensing paradigm to overcome the limitation of existing systems. The proposed system uses large-distance optical sensors (e.g., fiber Bragg grating sensors) for sensing bio-signals in individuals within (ad-hoc) crowds to anticipate any risks of emerging infectious diseases spreading or epidemics.

Novel Approach on Thin Bed Reservoir Case Study from Muda Formation, Natuna Basin

2020 ◽  
Author(s):  
J. Panjaitan
Keyword(s):  
Oil And Gas ◽  
Reservoir Characterization ◽  
Electrical Anisotropy ◽  
High Resistivity ◽  
Petrophysical Properties ◽  
Field Development ◽  
Novel Approach ◽  
Resistivity Anisotropy ◽  
Lateral Extent ◽  
Hydrocarbon Saturation

The presence of shale in thin beds reservoirs affects formation evaluation where the standard conventional log analyses are not designed to properly correct this effect. The conventional logging tools, with low vertical resolution, are not able to characterize these thin beds. This implies that log values do not represent the true bed or layer properties, but rather an average of multiple beds. Muda Formation are characterized by thin bed layers, made up of clastic rock sequences with dominant lithology of sandstone inter-bedded with shale, siltstone, and organic material as confirmed by drilling cuttings, logs response, and also supported by observation from sidewall cores. There are many uncertainties related to the presence of thin beds, primarily sand, silt, shale or their combination in term of their petrophysical properties and lateral extent. Inadequate reservoir characterization can cause significant amounts of oil and gas to remain unidentified. Accurate petrophysical parameters determination play an important role in the development plan of a field. The lateral and vertical variations in the petrophysical properties of the reservoir lead to different scenarios of the field development. The study of Muda Formation in this structure has integrated the sidewall core and log data. The contribution of the thin sand laminae to the average log response resulted in underestimating the porosity (Ф) and hydrocarbon saturation (Sh). The advanced measurement, like the resistivity anisotropy, proved quite useful as the vertical and horizontal resistivity across these beds leading to measurable electrical anisotropy. The resistivity measured perpendicular to the bedding is significantly higher than resistivity measured parallel to the bedding. The situation occurs due to high resistivity sand layers interbedded with low resistivity shale layers. The true sand porosity and hydrocarbon saturation were calculated using the laminated sand shale sequence and calibrated with core data. The study led to the more realistic petrophysical estimation of the sand shale laminae. A combination and integration of high-resolution image log for sand count, nuclear magnetic resonance (NMR) for porosity evaluation and triaxial resistivity for volumetric model through Laminated Sand Analysis approach are found useful to solve thin bed reservoir issue.

scholarly journals A novel approach to resource potential estimation and field development of non-structural traps with limited data: a case study of Achimov formation in Western Siberia

2021 ◽  
Vol 6 (3) ◽  
pp. 52-60
Author(s):  
Daria I. Zhigulina ◽  
Dilyara I. Mingazova ◽  
Denis S. Grigoriev ◽  
Vladimir Yu. Klimov ◽  
Mariya V. Latysheva ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Economic Assessment ◽  
Seismic Exploration ◽  
Resource Base ◽  
Seismic Surveys ◽  
Field Development ◽  
Estimated Parameters ◽  
Novel Approach ◽  
General Line

Background. The West Siberian basin which is one of the main oil and gas regions of Russia is characterized not only by classical structural traps but also by extremely complex geological objects of Achimov sequence. Thereby, it is quite difficult to evaluate perspectives of license areas within which we can discover those Achimov type of deposits, especially at regional stage exploration in terms of a complete absence of 3D seismic data and uneven coverage of area by 2D seismic surveys. Aim. This article is devoted to the methodology description for probabilistic assessment of the resource base of non-structural traps in the Achimov strata in areas with different 2D-seismic exploration degree. Materials and methods. The methodology based on the “density” method which in relation to the evaluated area uses statistics of estimated parameters and number of bodies in the field analogs. The general line of this paper is how to use this methodology for resource base evaluation in the zones of Achimov deposits intersection as the most promising from the point of further development. Results. As part of the project evaluation according to the proposed approach, the resource base was divided into components — resources of objects in areas of possible intersection and resources of single, non-intersecting objects. Conclusions. It provides an opportunity to spot and conduct a technical and economic assessment of previously uneconomic reservoirs.

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