Al Dushaishi, Mohammed (Texas A&M International University) | Hellvik, Svein (National Oilwell Varco) | Aladasani, Ahmad (Consultant) | Alsaba, Mortadha (Australian College of Kuwait) | Okasha, Qutaiba (Kuwait Oil Company)
Data mining and Artificial Intelligence (AI) methodologies are underdeveloped in the oil and gas industry, despite the need to improve drilling performance and remain globally competitive in all capital-intensive projects.
Drilling companies allocate significant resources to improve well planning, drilling schedules and rig management. Well planning comprises of two main elements; drilling performance and the reduction of drill stem vibrations. Therefore, modeling methodologies such as drill string statics, dynamic tools and rate of penetration modeling are applied to determine the optimum bottom hole assembly (BHA) components and drill bit design. However, more attention is required on drill stem fatigue, non-productive time (NPT) and their impacts on drilling operations.
In this paper, Data Analytics (DA) is applied to drilling logs taken from three wells that recorded vibration readings from different geological stratification. In turn, the work in this paper establishes a relationship between drill stem vibrations and various measurement and logging data while drilling. Statistical regression and multivariate analysis were used to examine correlations of drilling parameters, including BHA assembly, to vibration data. Therefore, the results include a composite vibration model that describes the drilling stem vibration behavior as a function of drilling parameters, and geological formations.
Results of the vibration models built in this study indicate that the drill stem lateral vibration behaves parabolically as a function of the drill pipe length, length of drill collar, gamma ray (GR) response, and weight on bit (WOB). The analysis of drill stem vibration effect on the mechanical specific energy (MSE) was inconclusive for depths below 1350 meters. However, for depths above 1350 meters a strong correlation was observed to ROP.
Al-saba, M. T. (Australian College Of Kuwait) | Al Fadhli, A. (KNPC) | Marafi, A. (KPC) | Hussain, A. (KPC) | Bander, F. (Texas A&M International University) | Al Dushaishi, M. F. (Texas A&M International University)
Nanoparticles (NPs) have been recently used for different application in the oil and gas industry. Nanoparticles have proven their effectiveness for different applications including; drilling fluids, wellbore strengthening, and enhanced oil recovery (EOR).
In this paper, different types of nanoparticles including Aluminum Oxide, Copper Oxide, and Magnesium Oxide were evaluated at two different concentrations. The main objective of this research is to investigate the effect of adding nanoparticles on the rheological properties of water-based drilling fluid. A simple 7% bentonite water-based mud was used in this study as a reference point. The rheological properties including plastic viscosity, yield point, and gel strength were evaluated at both; standard test temperature of 120°F and room temperature to understand the effect of nanoparticles on the rheological properties. In addition, the filtration characteristics were investigated using both; the standard API filter press at low-pressure low-temperature (LPLT) as well as the high-pressure-high-temperature (HPHT) filter press at 500 psi and 250°F.
The results showed that plastic viscosity was reduced by 50% when NPs were added compared to the reference point. The yield point was improved by 84%, 121%, and 231% for 0.5%Vol Copper Oxide, Aluminum Oxide, and Magnesium Oxide, respectively. In addition, the 10 seconds gel strength was increased up to 95%. A reduction in the fluid loss up to 30% was observed at LPLT conditions. However, the filtration characteristics were negatively affected at HPHT.
Based on the results, there is a good potential for using the above-mentioned nanoparticles to improve the rheological properties, especially the low-end rheology while maintaining low plastic viscosities, which in turns results in a better hole cleaning and more control over the equivalent circulation density.
Nanoparticles (NPs), which can be defined as solid particles with sizes ranging from 1 to 100 nm, have been recently used for different application in the oil and gas industry, including enhanced oil recovery (Rodriguez Pin et al. 2009; Ogolo et al. 2012), shale stabilization (Sensoy et al. 2009; Hoxha et al. 2017), fluid loss reduction (Amanullah et al. 2011; Contreras et al. 2014a), wellbore strengthening and formation damage reduction (Nwaoji et al. 2013; Contreras et al. 2014b,c).
Al-saba, M. T. (Australian College Of Kuwait) | Amadi, K. W. (Australian College Of Kuwait) | Al-Hadramy, K. O. (Australian College Of Kuwait) | Dushaishi, M. F. Al (Texas A&M International University) | Al-Hameedi, A. (Missouri University of Science and Technology) | Alkinani, H. (Missouri University of Science and Technology)
With the increase in the environmental awareness across the oil and gas industry along with the strict environmental regulations related to drilling waste management, different practices have been applied to reduce the impact of drilling waste on the environment such as slim-hole drilling, effective solid control equipment, and environmental friendly drilling fluid additives. The main objective of these techniques is to reduce the volume of the disposed contaminated drill cuttings, therefore, reducing both impact on the environment and the cost related to drilling waste handling.
This paper investigates the feasibility of using bio-degradable waste as an environmental friendly drilling fluid additives. A comprehensive experimental evaluation of different bio-degradable waste materials has been carried out to investigate their effectiveness in improving the different properties of water-based drilling fluids. These waste materials, which were prepared in-house, include but not limited to grass, corncobs, sugar cane, pomegranate peel, soya bean peel, etc. The additives were evaluated at different concentrations and mixtures and the various drilling fluids properties were measured, such as filtration, pH, and rheological properties. The filtration properties were evaluated using the standard low pressure low temperature API filter press.
The results showed that some materials such as soya bean peel powder reduced the fluid loss up to 60% and improved the yield point and the gel strength up to 330 % and 640% with minor to no effect on the plastic viscosity, suggesting the applicability of using both additives as a rheology modifier and a filtration control agent. Other materials such as henna and tamarind gum outer reduced the pH dramatically, suggesting their applicability in being used as pH control agents, especially when drilling through cement.
These promising results showed a good potential for these environmental friendly drilling fluid additives (EFDFA) that were generated from waste material to be used as an alternative for some of the toxic materials currently used in the industry. Using these additives, will contribute towards reducing both; the impact on the environment as well as the overall cost of drilling fluids and drilling waste handling.
Globalization inevitably drives prices of commodities and services lower. As such, to remain competitive in the Oil & Gas industry it is imperative in low oil prices regimes to decrease operating costs. A key element of low operating costs in hydrocarbon exploration, production and refining, is corrosion control. In this paper the development of corrosion circuits/loops is improved by categorizing sixty four damage mechanisms based on operating preconditions, material susceptibility and monitoring methods. The inspection resource requirements are determined for each Refinery unit based on number of damage mechanisms, the required monitoring methods and the screening of regulated equipment. Corrosion loops are developed based on failure mechanism applicability and not arbitrarily changes in operating conditions or the probability of failure. Material selection methods for critical units during detailed design should not be qualitative to avoid over/under designs that are carried over to operating/inspection programs. When inspection effectiveness does not add significant value to risk reduction due to a gap between operating requirements and turnaround intervals, consequence mitigation, including operating practices should be examined. Therefore, risk studies including RCM, HAZOP and QRA should be aligned with RBI and validated by failure and consequence statistics. IOW assignment should consider design risk profile and operating (operations and inspection) risk profiles. By far this is the underlining reasons why operators are unable to leverage management systems to mitigate risk, lower operating cost and avoid major accidents. The importance of managing risk transfer between equipment design, operation, inspection, safety and system integration is highlighted. Integrity operating windows are not exclusive. The alignment of all the installation risks enables the operator to leverage risk profiles in manner that satisfies the statutory body and addresses its business needs.
This paper presents a critical review of planning systems for hydrocarbon exploration and production development (E&PD) companies. Traditional planning systems are no longer suitable to manage maturing reservoirs, capital-intensive projects, challenging reservoirs and growing development costs in low oil price regimes. The development of maturing oil fields and unconventional hydrocarbon resources requires dynamic development plans that are rigorously aligned with the targeted performance and adopted strategy. Traditional planning systems are no longer suitable because they lag in reacting to risks and opportunities. This paper describes a system that would reconcile development plans with business performance and constantly facilitate any required change in strategy. The triangular alignment of development plans with performance and strategy is quantitatively rigorous since it must encompass subsurface and surface operational risks including HSE risks and development cost. Planning system validation is required for gap resolution and alignment of the planning system elements. The use of analytics is a requirement to validate operational plans, validate the strategic plan and measure performance. Organizational structure, capabilities and compliance in maintaining the Planning System Integrity must be managed in par with the strategy milestones.