Reservoir Management Using Production Data

Soeriawinata, T.; Kelkar, Mohan

doi:10.2118/52224-ms

Cited by 38 publications

(4 citation statements)

References 1 publication

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“…At present, the assessment of reservoir connectivity through logging curves and tracer studies offers practicality in field operations but exhibits limitations in laboratory adaptability. − Numerical simulations, though utilized for studying interlayer heterogeneity, fall short in replicating permeation within actual fracture-matrix configurations. − Similarly, physical simulations lack precise methodologies for preparing fracture cores and calculating fracture permeability to accurately simulate real fluid flow dynamics . Currently, fractures are simulated by introducing a high-permeability layer, with the permeability of this layer subsequently calculated and regarded as the fracture permeability .…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Factors Affecting Oil Recovery in Sandstone-Buried Hill Superimposed Reservoirs

Zhang,

Li,

Ding

et al. 2024

ACS Omega

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Sandstone-buried hill superimposed reservoirs, characterized by the coexistence of the sandstone matrix and the fracture pore matrix, present unique challenges in integrated development due to their connectivity and physical properties. Currently, research on the factors affecting the recovery of sandstone-buried hill superimposed reservoirs with both porous and fractured media is limited. In this study, a more realistic method for preparing fractured cores and calculating fracture permeability was proposed, and the effect of confining pressure on fracture permeability was investigated. Additionally, a three-tube experimental apparatus was designed to study the effects of connectivity, different permeability contrasts between sandstone and buried hills, and various development strategies on recovery. The results indicate that fracture permeability is significantly affected by the confining pressure. When sandstone and buried hills are not connected, the total recovery is the highest. As connectivity increases, the recovery from sandstone gradually decreases, while the recovery from the buried hill gradually increases, leading to a decrease in the overall recovery. The permeability contrast between sandstone and buried hill has a minimal impact on the overall recovery; however, a higher permeability contrast leads to increased sandstone recovery and decreased buried hill recovery. The highest overall recovery was achieved with injection solely into the sandstone, followed by general injection, with the lowest recovery from injection solely into the buried hill. This study provides new insights into the integrated development of sandstone-buried hill reservoirs.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Factors Affecting Oil Recovery in Sandstone-Buried Hill Superimposed Reservoirs

Zhang,

Li,

Ding

et al. 2024

ACS Omega

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“…PDG provides a long-term continuous record of data, such as pressure and temperature, which can be recorded for a well's life during production or injection, reflecting all changes in the well rate and well shut-ins. The PDG data may be used for many applications, such as detection of changes in reservoir properties [1,2], evaluation of production or injection capacity [3], effect of the well interventions [4], monitoring of well interference [5,6], and monitoring of changes in production capacity [7,8]. So, PDGs become a significant source of downhole data for pressure transient analysis in oil and gas production [9] and geological CO 2 storage [10].…”

Section: Introductionmentioning

confidence: 99%

Review of Different Methods for Identification of Transients in Pressure Measurements by Permanent Downhole Gauges Installed in Wells

et al. 2023

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Permanent downhole gauges (PDG) are massively installed in injection and production wells operated in different industries such as oil and gas, geological CO2 storage, and the geothermal industry. These gauges provide a vast amount of real-time pressure measurements. The pressure measurements may be divided into periods with a predominantly monotonic change of pressure in response to a sudden change of rate, called transients. These transients are caused by well operations, such as variation of injection or production rate and well shut-ins. Transient identification is one of the important steps in processing and interpreting the PDG data. Traditional transient identification is performed by processing and analyzing with human involvement, which is a step in post-operation well analysis. In modern well surveillance technology, permanent and reliable data transmission from the wellbore to the surface provide the possibility to analyze well performance in real time or proactively. So automated transient identification is a practical demand, but a challenge at the same time. This article starts with the definition of a transient, then reviews and compares seven methods for transient identification proposed by previous works available in the literature. A comparative analysis of these methods is carried out accounting for the detection algorithm and procedure, results of testing, and general positive and negative sides of performance and application of these methods. The results of this review facilitate further developments of field data interpretation techniques by the R&D community and academia and may help in the selection of a proper method for further application in well surveillance workflows developed in the industry.

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“…This method introduced the time lag of injected signals and analyzed the relationship between the injection well and adjacent production well. Using the Spearman coefficient of rank correlation analysis method, Soeriawinata and Kelkar (1999) proposed constructive and destructive interference of the injection signal based on a superposition principle, and they established the inversion model of multiple injection wells. Such methods regress an interwell connectivity coefficient, which is an index to characterize the correlation quantitatively between oil and water wells.…”

Section: Introductionmentioning

confidence: 99%

Improved capacitance model considering bottom-hole flowing pressure and interference between oil wells

Wang

Wang²,

Xia

2020

Energy Exploration & Exploitation

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With the continuous production of oil wells, the reservoir properties, such as permeability and porosity, are changing accordingly, and the reservoir heterogeneity is also enhanced. This development is vulnerable to the problem of the one-way advance of injected water and low efficiency of water flooding. The interwell connectivity between injection and production wells controls the flow capacity of the subsurface fluid. Therefore, the analysis of interwell connectivity helps to identify the flow direction of injected water, which is of great significance for guiding the profile control and water plugging in the later stage of the oilfield. In this study, based on the principle of mass conservation, a capacitance model considering the bottom-hole flowing pressure was established and solved by using the production dynamic data of injection–production wells. Then, the validity of the capacitance model was verified by numerical simulation, and the influences of well spacing, compression coefficient, frequent switching wells, injection speed, and bottom-hole flowing pressure on interwell connectivity were eliminated. Finally, a practical mine technique for inversion of connectivity between wells using dynamic data was developed. The advantage of this model is that the production dynamic data used in the modeling process are easy to obtain. It overcomes the shortcomings of previous models and has a wider range of applications. It can provide a theoretical basis for the formulation of profile control and water-plugging schemes in the high-water-cut period.

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Reservoir Management Using Production Data

Abstract: This paper was prepared for presentation at the 1999 SPE Mid-Continent Operations Symposium held in Oklahoma City, Oklahoma, 28-31 March 1999.

Cited by 38 publications

References 1 publication

Experimental Study on Factors Affecting Oil Recovery in Sandstone-Buried Hill Superimposed Reservoirs

Experimental Study on Factors Affecting Oil Recovery in Sandstone-Buried Hill Superimposed Reservoirs

Review of Different Methods for Identification of Transients in Pressure Measurements by Permanent Downhole Gauges Installed in Wells

Improved capacitance model considering bottom-hole flowing pressure and interference between oil wells

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