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Decisions in E&P ventures are affected by Bias, Blindness, and Illusions (BBI) which permeate our analyses, interpretations and decisions. This one-day course examines the influence of these cognitive pitfalls and presents techniques that can be used to mitigate their impact. Bias refers to errors in thinking whereby interpretations and judgments are drawn in an illogical fashion. Blindness is the condition where we fail to see an unexpected event in plain sight. Illusions refer to misleading beliefs based on a false impression of reality. All three can lead to poor decisions regarding which work to undertake, what issues to focus on, and whether to forge ahead or walk away from a project. Strategic thinking and planning are key elements in an organisation’s journey to maximise value to shareholders, customers, and employees. Through this workshop, attendees will go through the different processes involved in strategic planning including the elements of organisational SWOT, business scenario and options development, elaboration of strategic options and communication to stakeholders. Examples are provided including corporate, business unit and department case studies. This seminar will teach participants how to identify, evaluate, and quantify risk and uncertainty in everyday oil and gas economic situations. It reviews the development of pragmatic tools, methods, and understandings for professionals that are applicable to companies of all sizes. The seminar also briefly reviews statistics, the relationship between risk and return, and hedging and future markets.
This seminar will teach participants how to identify, evaluate, and quantify risk and uncertainty in everyday oil and gas economic situations. It reviews the development of pragmatic tools, methods, and understandings for professionals that are applicable to companies of all sizes. The seminar also briefly reviews statistics, the relationship between risk and return, and hedging and future markets. Strategic thinking and planning are key elements in an organisation’s journey to maximise value to shareholders, customers, and employees. Through this workshop, attendees will go through the different processes involved in strategic planning including the elements of organisational SWOT, business scenario and options development, elaboration of strategic options and communication to stakeholders. Examples are provided including corporate, business unit and department case studies. Safety leadership focuses on the Human Factors (HF) which complement technical training to optimise reliability, safety, compliance, efficiency, and risks within a team-based environment. The IOGP laid down the HF skills and competencies required, and they form the basis for specialised O&G HF training's delivered by Mission Performance. This 1-day course reviews the key human factors but then also reviews what can be done to accelerate and scale operational roll-out for optimum and sustained impact, including integration with existing safety processes and (reporting) systems, refreshers, assessments, measurements, as well as the role of leadership and culture. Decisions in E&P ventures are affected by Bias, Blindness, and Illusions (BBI) which permeate our analyses, interpretations and decisions. This one-day course examines the influence of these cognitive pitfalls and presents techniques that can be used to mitigate their impact. Bias refers to errors in thinking whereby interpretations and judgments are drawn in an illogical fashion.
The basic objective of this course is to introduce the overview and concept of production optimisation, using nodal analysis as a tool in production optimisation and enhancement. The participants are exposed to the analysis of various elements that help in production system starting from reservoir to surface processing facilities and their effect on the performance of the total production system. Depth conversion of time interpretations is a basic skill set for interpreters. There is no single methodology that is optimal for all cases. Next, appropriate depth methods will be presented. Depth imaging should be considered an integral component of interpretation. If the results derived from depth imaging are intended to mitigate risk, the interpreter must actively guide the process.
Take Back Control of Your Capital Project with an EPC 4.0 Strategy Stratigraphical - Sedimentological Framework For The Thamama Group Development In The Western Uae Based On The Legacy Core Data: How The Key To The Future Is Found In The Past. Performance Comparison Of Two Different In-house Built Virtual Metering Systems For Production Back Allocation. Innovation In A Time Of Crisis: How Can The Upstream Industry Develop New, Fit-for-purpose Technology? How To Meet Operational Challenges In An Extreme VUCA Environment By Adaptive Process Control. Challenges In Drilling & Completion Of Extended Reach Drilling Wells With Landing Point Departure More Than 10,000ft In Light/ Slim Casing Design.
This work presents a new open access carbonate reservoir case study that uniquely considers the major uncertainties inherent to carbonate reservoirs using one of the most prolific aggradational parasequence carbonate formation sets in the U.A.E., the Upper Kharaib Member (Early Cretaceous), as an analogue. The ensemble considers a range of interpretational scenarios and geomodelling techniques to capture the main components of its reservoir architecture, stratal geometries, facies, pore systems, diagenetic overprints and wettability variations across its shelf-to-basin profile.
Fully anonymized data from 43 wells across 22 fields in the Bab Basin in the U.A.E from different geo-depositional settings and height above the free water level (FWL) was used. The data comprises of a full suite of open-hole logs and core data which has been anonymized, rescaled, repositioned and structurally deformed; FWLs were normalized and the entire model was placed in a unique coordinate system. The resultant static and dynamic models(s) capture the geological setting and reservoir heterogeneities of selected fields but now at a manageable scale. Synthetic production data has been generated by adding wells to an undisclosed ‘truth case’ model to obtain field-wide and well-by-well production data (oil, gas, and water rates, bottom-hole pressures etc.) from simulation runs.
The original oil in place (OOIP) and reserves that have been computed from these models are synthetic and unique. Here we present an initial field development plan and corresponding reservoir simulations that showcase the heterogeneity inherent to the model and demonstrate the variability of the flow and storage capacity of the different reservoir architectures found in and around the Bab Basin. This is an example application of how we can use synthetic production data to improve our understanding of flow behaviours in carbonates.
The novelty of our work is the provision of a unique open access dataset which enables reproducible science in the field of reservoir characterisation and simulation, and helps training new generations of geoscientists and reservoir engineers in the art of characterising, simulating and predicting the reservoir performance of carbonate reservoirs under different recovery processes.
Pfeiffer, Thomas (Schlumberger) | Sarili, Mahmut (Schlumberger) | Wang, Cong (Schlumberger) | Naito, Koichi (Schlumberger) | Morikami, Yoko (Schlumberger) | Chen, Hua (Schlumberger) | Shabibi, Hamed (Petroleum Development Oman) | Frese, Daniela (Petroleum Development Oman)
For every barrel of oil, about three to four barrels of water is produced. Water is part of every operation in upstream oil and gas: we produce it, we process it, we inject it. It affects our reserves because it may drive or sweep the oil out of the pores. It is a source of corrosion and scaling in pipe and in the reservoir. Measuring formation water resistivity (Rw) goes beyond using it as the basis of petrophysical well log interpretation. It is the key to telling different waters apart for taking the most representative samples.
We introduce a calibrated induction-based water resistivity measurement sensor, which is configured to accurately measure Rw in the flowline of a formation testing tool. The induction-based operating principle of the sensor eliminates the use of electrodes and the associated fouling of the measurement due to coating or accumulation of particles on the electrodes. Instead, the sensor induces an electric current through a nonconductive, neutrally wetting flowline tube that is proportional to the conductivity of the fluid column within the tube. The resulting current at the receiver coil is then converted into resistivity.
A case study presents data from a focused water-sampling station in a transition zone in a well drilled with water-based mud (WBM). The resistivity contrast between the mud filtrate and the formation water is low and mobile oil mixes with the formation water and mud filtrate. Despite these difficult conditions, the downhole measurement clearly shows the cleanup progress in real time and compares well with the surface measurements of the water samples. The ability to differentiate formation water from WBM filtrate with low resistivity contrast in the presence of oil places the station depth in the transition zone and enables accurate interpretation of contacts, saturation, and ultimately hydrocarbon in place.
The sensor package is suitable for use up to 200-degC temperature and 35,000-psi pressure. The sensor can measure a wide range of resistivity, from 0.01 to 65 ohm.m. Measurements performed on known fluids prove its high accuracy of ±5% or less for resistivity below 10 ohm.m at a resolution of 0.001 ohm.m. The design eliminates any dead volume and all flowline fluid passes through the sensor. The sensor tube is smoothly flushable for fast dynamic response in multiphase slug flow.
This paper also discusses optimal sensor placement and operational techniques to achieve best results in multiphase flow environments.
The accuracy and resolution of the resistivity measurement enables direct comparison of guard and sample flowlines during focused sampling and provides differentiation even when the contrast between filtrate and formation water is low. The results can serve as a direct Rw measurement, for example in an exploration scenario, as successfully shown in another PDO trial, or can be compared to other sources of Rw measurement or used to improve the accuracy of alternatives to the Archie equation, such as dielectric dispersion.
Parasequence thickness and frequency are traditionally interpreted to be controlled by allocyclic processes such as oscillations in eustatic sea-level. However, the use of numerical forward models is challenging these concepts. Outcrop data from Ras Al-Khaimah (UAE) were incorporated into numerical forward models and used to replicate parasequences from the Upper Kharaib Reservoir Unit. Results indicate that clinoform geometries within the parasequences can form by autocyclic, rather than allocyclic, processes.
Stratigraphic, sedimentological and palaeoenvironmental interpretations made from outcrops of Upper Kharaib carbonate clinoform parasequences at Wadi Rahabah, Ras Al-Khaimah, were used to build a numerical stratigraphic forward model. Numerical stratigraphic forward models produce fully quantitative three-dimensional deterministic models that replicate and predict the spatial distribution of stratal geometries, stacking patterns, sedimentary thickness and facies formed under a set of predefined input parameters and boundary conditions. A CarboCAT numerical model of carbonate deposystems that uses cellular automata to determine the distribution and lithofacies of heterogeneous carbonate strata in three dimensions (
Results of the numerical forward model show that carbonate clinoform parasequences from the Upper Kharaib Reservoir Unit can be generated by an autocyclic Ginsburg-type mechanism of sediment transport and shoreline progradation (e.g.
Observations from numerical forward models have implications for the distribution of reservoir intervals within the Upper Kharaib. Parasequences formed by autocyclic process produce heterogeneous reservoirs with complex facies mosaics. Lateral heterogeneity and variable thicknesses within these reservoirs is more difficult to correlate and trace across fields than simple stacked, layer cake, parasequences created by sea-level oscillations.
Alkinani, Husam H. (Missouri University of Science and Technology) | Al-Hameedi, Abo Taleb T. (Missouri University of Science and Technology) | Dunn-Norman, Shari (Missouri University of Science and Technology) | Al-Bazzaz, Waleed H. (Kuwait Institute for Scientific Research)
Lost circulation is a major problem in drilling operations. As the drilling environment is getting more complicated nowadays, the problem of lost circulation can lead to a significant additional non-productive time (NPT). The objective of this work is to provide in-depth insights into probability and cost analyses of the current lost circulation materials and treatments used around the world. This is the second part (Part 2) of the state-of-the-art lost circulation materials and treatment, the other part (Part 1) focuses on the trends and uses.
Lost circulation data of more than 2000 wells drilled worldwide were gathered from many sources such as daily drilling reports, final well reports, technical reports, petroleum literature, etc. The treatment data were classified based on the type of loss as treatments for partial, severe, and complete loss. Descriptive data analytics and visualization tools were used to analyze the data. A dashboard was created to help to analyze the data.
The results of this work revealed that there are simply two criteria to be used in the decision-making process to choose the best lost circulation treatment. The first one is that the treatment has to have a high probability of success, and the other criterion is that the treatment has to have a relatively reasonable cost based on the type of loss. In different words, optimization has to be conducted to choose treatments based on the type of loss. However, some treatments with a high probability of success may have a low number of usage which might be the reason behind the high probability of success. Thus, careful attention should be given for the number of uses of each treatment when calculating the probability. On the other hand, some treatments have a low probability of success and high cost, which indicates that the high cost does not always correlate with a high probability of success. In addition, the type of loss will play a major rule in selecting the treatments since some treatments are too expensive to be applied for partial loss as an example, and usually, other options are available.
In short, this study will provide clear insights into the cost and probability of the state-of-the-art lost circulation treatments and materials used in the oil and gas industry. The recommendations provided by this study can be utilized to make better future decisions to treat lost circulation.
In the lateral reservoir section (6.125 in.), stick/slip became more severe and resulted in higher costs. It was vital to identify the root cause of, and to implement preventative measures for, the damage. This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper IPTC 19058, “Resolving Torsional Vibration in Horizontal Limestone Reservoirs Prevents Severe Equipment Damages,” by Adil Zahran Al Busaidi, SPE, Ahmed El Hawy, Ahmed Omara, Ali Baqir Al Lawati, Ramiro Oswaldo Vasquez Bautista, SPE, Muhannad Awadalla, and Ghaida Abdullah Salim Al Ghaithi, Schlumberger, and Zied Chibani, SPE, and Suroor Al Jamaei, Petroleum Development Oman, prepared for the 2019 International Petroleum Technology Conference, Beijing, 26–28 March. The paper has not been peer reviewed.