scholarly journals Failure prediction of reservoir pressure maintenance system at the Prirazlomnoye Arctic Offshore field

2021 ◽  
Vol 1201 (1) ◽  
pp. 012084
Author(s):  
I M Kurchatov
Keyword(s):  
Arima Model ◽  
Water Injection ◽  
Failure Prediction ◽  
Technical Condition ◽  
Sensor Data ◽  
Reservoir Pressure ◽  
Software Environment ◽  
Pump Failure ◽  
Maintenance System ◽  
Injection Pump

Abstract Failures of reservoir pressure maintenance system at offshore facilities cause production losses and a significant increase in OPEX. Predicting failures of a water injection pump or its parts can highly improve the overall performance by promptly adjusting operating parameters to prevent failure occurrence or by scheduling maintenance to reduce unplanned repairs and to minimize downtime. This is particularly relevant for Arctic offshore projects, characterized by considerable logistical challenges and substantial environmental safety risks. The paper presents a data-analytic approach for failure prediction for the water injection pump operated at the ice-resistant GBS Prirazlomnaya. The study used pump failure history and field sensor data to predict the technical condition and identify a failed component in advance. An ARIMA model implemented in the R software environment was developed for the analysis. The results demonstrate that the approach works appropriately based on the generalized risk assessment and feedback from subject matter experts.

scholarly journals Studying of changes in the interaction of well during the water injection process

2019 ◽  
pp. 81-85
Author(s):  
Damir K. Sagitov
Keyword(s):  
Correlation Coefficient ◽  
Pair Correlation ◽  
Water Injection ◽  
Reservoir Pressure ◽  
Maintenance System ◽  
Displacement Front ◽  
Injection Process ◽  
Production Wells

The study of the causes of changes in the effectiveness of the reservoir pressure maintenance system in terms of the interaction of injection and production wells is an important and insufficiently studied problem, especially in terms of the causes of the attenuation of stable connections between the interacting wells. Based on the results of the calculation of the Spearman pair correlation coefficient, the reasons for the change in the interaction of wells during the flooding process at various stages were estimated. Of particular interest are identified four characteristic interactions, which are determined by the periods of formation of the displacement front.

The Perspective of Novel Chemical Tracer Technology in Reservoir Surveillance and Hydrodynamic Modelling for More Efficient Hydrocarbon Recovery

2021 ◽  
Author(s):  
Nadir Husein ◽  
Evgeny Aleksandrovich Malyavko ◽  
Ruslan Rashidovich Gazizov ◽  
Anton Vitalyevich Buyanov ◽  
Aleksey Aleksandrovich Romanov ◽  
...  
Keyword(s):  
Oil Recovery ◽  
Continuous Production ◽  
Economic Effect ◽  
Water Injection ◽  
Injection Rate ◽  
Reservoir Pressure ◽  
Entire Area ◽  
Field Development ◽  
Oil Companies ◽  
Maintenance System

Abstract Today, efficient field development cannot be managed without proper surveillance providing oil companies with important geological and engineering information for prompt decision-making. Once continuous production is achieved, it is necessary to maintain a consistently high level of oil recovery. As a rule, a reservoir pressure maintenance system is extensively implemented for this purpose over the entire area because of decreasing reservoir pressure. At the same time, it is important to adjust the water injection to timely prevent water cut increasing in production wells, while maintaining efficient reservoir pressure compensation across the field. That is why it is necessary to have a relevant inter-well hydrodynamic model as well as to quantify the water injection rate. There are many ways to analyse the efficiency of the reservoir pressure maintenance system, but not all of them yield a positive, and most importantly, a reliable result. It is crucial that extensive zonal production surveillance efforts generate a significant economic effect and the information obtained helps boost oil production. Thus, the main objective of this paper is to identify a method and conduct an effective study to establish the degree of reservoir connectivity and quantify the inter-well parameters of a low permeability tested field.

Efficiency of reservoir pressure maintenance system in low-permeable heterogeneous reservoirs

2021 ◽  
pp. 63-78
Author(s):  
Yu. A. Plitkina
Keyword(s):  
Water Injection ◽  
Oil Production ◽  
Comparative Characteristic ◽  
Reservoir Pressure ◽  
Heterogeneous Reservoirs ◽  
Maintenance System ◽  
Multistage Hydraulic Fracturing ◽  
Additional Costs ◽  
Production Period ◽  
Low Permeability Reservoirs

The article presents a generalization of experience in organizing the reservoir pressure maintenance system in low-permeability reservoirs of Tyumen suite. The author of the article considers the issues of influence of the density of the grid of directional wells and the intensity of waterflooding on the efficiency of the reservoir pressure maintenance system. The question of the need to take into account the orientation of the horizontal wells with multistage hydraulic fracturing system with respect to regional stress in order to minimize the breakthrough of the injected water is disclosed in detail. A comparative characteristic of the efficiency of the reservoir pressure maintenance in the system "along" and "across" of stress is given. A new express method is described for determining the optimal oil production period individually for each injection well, which allows maximizing oil production without additional costs. The author of the article gives recommendations for monitoring and regulating water injection.

scholarly journals Capacity Requirements Planning in Water Injection Plant (WIP) Facilities of the Exploration Wells at Oil Company

2019 ◽  
Vol 1 (1) ◽  
pp. 36-46
Author(s):  
Meilita Tryana Sembiring ◽  
Sri Ivan Madriansyah ◽  
Muhammad Haikal Sitepu
Keyword(s):  
Production Process ◽  
Capacity Planning ◽  
Economic Value ◽  
Water Injection ◽  
Reservoir Pressure ◽  
Petroleum Production ◽  
Injection Pump ◽  
Artificial Lift ◽  
Production Wells ◽  
Injection Water

In production wells, in line with the production time there is a decrease in reservoir pressure and this condition causes a reduction in the economic value of the well. The problem of wells that have decreased production capability caused by a decrease in reservoir pressure can be overcome by means of artificial lift methods. Water injection is a method of injecting by re-injecting water that is carried along with oil during the petroleum production process using an injection pump. Based on this, capacity planning is needed in relation to the need for injection pump engines in the operating area so that the petroleum production process can run smoothly. The method used is to perform formation water forecasting needed in each exploration wells based on historical data injection water formation to obtain a plan regarding the capacity of the pump engine to be used in the coming period. Based on the results of forecasting, it is known that 32 periods have the possibility to exceed WIP capacity by 2000 bwpd. From the observations, an additional 2000 bwpd is needed to increase WTP capacity to 4000 bwpd with the proposed cost needed for the procurement of injection water per month is Rp. 22.083.333 compared to the previous required cost of Rp. 32.129.400,- per month.

scholarly journals Convergence Issues of Hydrodynamic Models of Reservoir Pressure Maintenance Systems

2021 ◽  
Vol 135 (4) ◽  
pp. 32-35
Author(s):  
S. T. Zakenov ◽  
◽  
А. А. Yermekov ◽  
L. K. Nurshakhanova ◽  
Sh. Aijanova ◽  
...  
Keyword(s):  
Initial Data ◽  
Software Package ◽  
Reservoir Pressure ◽  
Hydraulic Characteristics ◽  
Hydrodynamic Models ◽  
Pipeline Network ◽  
Maintenance System ◽  
Maintenance Systems ◽  
Calculation Software

The article presents the problems of correctness of input of initial data, convergence of hydrodynamic models based on the results of calculating the hydraulic characteristics of the ground pipeline network of the reservoir pressure maintenance system using an automated calculation software package.

Simulation Model of Four Stroke, Six Cylinder Marine Diesel Engine

2015 ◽  
Vol 236 ◽  
pp. 113-118
Author(s):  
Marcin Kluczyk ◽  
Andrzej Grządziela
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Technical Condition ◽  
Operational Experience ◽  
Fuel System ◽  
Engine Operation ◽  
Injection Pump ◽  
Fuel Injection Pump ◽  
Marine Diesel ◽  
Basic Equations

The paper presents a model of dynamics of six-cylinder inline diesel engine executed in the Matlab software. The basic equations necessary to describe the forces acting during the engine operation was presented. Application of some simplifications allowed to present proposal of a mathematical model of the engine, which allows analysis of changes of forces in the crank-piston system, depending on the technical condition of the fuel system elements. Operational experience indicate that one of the most common cause of failure of the fuel system is reduced fuel charge supplied by a defective fuel injection pump. Calculations of gas forces had been replaced by the implementation into the model indication charts recorded from tests on a engine test stand. Simulation results were presented as a result of FFT spectra of modeled tangential forces.

Reduction of Cavitation Damage in a High-Energy Water Injection Pump

2011 ◽  
Author(s):  
Paul Cooper ◽  
Ron Ungewitter ◽  
Rehan Farooqi ◽  
James McKenzie ◽  
Bruno Schiavello ◽  
...  
Keyword(s):  
Erosion Rate ◽  
Cavitation Erosion ◽  
Acoustic Analysis ◽  
Water Injection ◽  
High Energy ◽  
Cavitation Number ◽  
Two Phase ◽  
Cavitation Damage ◽  
Injection Pump ◽  
Unsteady Rans

The conventionally-designed first-stage impeller of a high-energy, two-stage 19MW seawater injection pump, running at 4950 rpm and generating 1500m of head at a flow rate of 1.05 m3/s was seriously damaged by cavitation erosion in the first two months of operation. The impeller was redesigned by reshaping the blades in the region near the leading edges so as to reduce the inception cavitation number. This impeller has been running for more than a year, and the cavitation erosion rate is predicted to be low enough for it to last 40,000 hours. However, a prominent tone at blade passing frequency appeared with the new impeller, which interacts more effectively with the distorted inflow from the side-suction approach passage. Acoustic analysis of both single- and two-phase unsteady RANS CFD solutions corroborate the presence of this tone, which had not been observed when the pump operated with the original, conventional impeller.

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