Kajian dan Komparasi Teoritis Metode Prediksi Tekanan Pori: Metode Eaton dan Metode Bower

Budiman, Muhammad Arif; Warnana, Dwa Desa; Syaifuddin, Firman

doi:10.12962/j23373539.v6i2.23332

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…where Pp symbolizes pore pressure, σ symbolizes overburden pressure, Ph symbolizes hydrostatic pressure, Vint symbolizes interval velocity, NCT symbolizes normal compaction trend using sonic log, and x symbolizes Eaton's empirical coefficient (1,2 -3) (Budiman et al, 2017).…”

Section: Data Collectionmentioning

confidence: 99%

Overpressure-generating mechanisms in the Blok F3, North Sea, Netherland

Karin

Sudarmaji

2021

Aceh Int. J. Sci. Technol

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Block F3 North Sea is a block with pore pressure values that vary over time due to complex geological conditions such as burial and various sedimentation zones. Pore pressure is one of the important aspects that need to be analyzed as a basis for the identification of zones and overpressure mechanisms. Overpressure is a greater pore pressure condition than normal pressure and may cause drilling problems, such as kicks, blowouts, etc. This study calculated pore pressure values using the eaton method approach with well data and seismic data. Both data are integrated for generating pore pressure values in 1D and 3D. 1D Modelling uses Interactive Petrophysics 3.5, while 3D modeling uses Petrel software. In 3D modeling, the variables used are interval velocity and inversion velocity obtained by acoustic impedance inversion. The sub-variables used are the inversion density and the regression density obtained from well density acoustic impedance inversion. The existence of a 1D overpressure zone at a depth of 1,100 – 1,800 m with an overpressure value of 3,836 – 18,975 kPa. In addition, the overpressure value based on the 3D model is 8,000 – 18,000 kPa. The overpressure zone is validated using an acoustic impedance inversion model with a high value of 5,200 – 5,380 (m/s)*(gr/cc). Overpressure in Block F3 is predicted to occur from disequilibrium compaction..

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Section: Data Collectionmentioning

confidence: 99%

Overpressure-generating mechanisms in the Blok F3, North Sea, Netherland

Karin

Sudarmaji

2021

Aceh Int. J. Sci. Technol

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“…During the drilling operation carried out on the "X" Field, drilling problems that often occur are often found in wells A and B, with various drilling problems, namely Kick and Pipe sticking. This problem can be avoided by analyzing subsurface pressure so that drilling with NPT can be achieved to a minimum and ultimately can optimize the exploitation of hydrocarbon reserves [2]. Pore pressure prediction using the Bowers method is better than the Eaton method because it can predict high pore pressure values and the Bower method is considered more capable of predicting the optimal mud weight value for drilling at that depth.…”

Section: Introductionmentioning

confidence: 99%

Pore Pressure Estimation Using Bowers Methods in Shale Gas Reservoir Jambi Sub-Basin

Bungasulu

2022

JFP

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Pore pressure prediction has important implications in determining the success of a drilling activity. Information of subsurface pore pressure prediction in hydrocarbon exploration and production is very important. For geologist this information can be used to determine of hydrocarbon generation and maturation within a basin, while for petroleum engineer pore pressure prediction is very important to maintain the production rate and for drilling engineer this information is useful for mud weigh and casing designs prior drilling activities to prevent blow out. This study is conducted in the well A and B, Field "X", Jambi Sub-Basin. Wells A and B have problems when drilling operations are carried out, such as blow out and pipe sticking which causes high non-productive time (NPT). So, optimum pore pressure prediction analysis must be carried out to avoid downhole problems in the implementation of further development well drilling. First, this study identifies the mechanism of overpressure formation, then predicts pore pressure using the Bowers method and subsequently performs modeling of subsurface 3D pore pressure. The results of the analysis showed that overpressure occurred in the Gumai and Talang Akar Formations, overpressure mechanism in the formation was caused by compaction, fluid expansion (kerogen maturation), and based on analysis of 3D pore pressure modeling many overpressure zones were found in the Gumai Formation, Jambi Sub-Basin

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Drilling Optimization of Tight Sands and Shale Gas Reservoir in Jambi Sub-Basin Based on Pore Pressure Estimation Using Drilling Efficiency Mechanical Specific Energy (DEMSE) and Bowers Methods

2019

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The subsurface pressure analysis is used to detect the overpressure and problems in the well that will be drilled based on exploration well data. Various problems were found while drilling operations carried out on A and B wells, namely, Kick and Pipe sticking which cause a high Non-Productive Time (NPT). This research is conducted to identify the mechanism of overpressure formation in Tight Sand Gas and Shale Gas in the Jambi Sub-Basin. Furthermore, to predict pore pressure using the Drilling Efficiency and Mechanical Specific Energy (DEMSE) and Bowers method. The final result will be a 3D pore pressure cube in the area based on quantitative analysis of post-stack seismic inversion. The results of the pore pressure analysis from the wells and the 3D pore pressure model indicate that top of overpressure occurs in the Gumai Formation, then it is decreasing gradually approaching the hydrostatic pressure on the Basement. The mechanisms of overpressure are caused by under compaction, fluid expansion (kerogen maturation). The Gumai Formation and Talang Akar Formation are shale rocks so the type of mud weight that is well used is oil based mud (OBM).

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Kajian dan Komparasi Teoritis Metode Prediksi Tekanan Pori: Metode Eaton dan Metode Bower

Cited by 3 publications

References 2 publications

Overpressure-generating mechanisms in the Blok F3, North Sea, Netherland

Overpressure-generating mechanisms in the Blok F3, North Sea, Netherland

Pore Pressure Estimation Using Bowers Methods in Shale Gas Reservoir Jambi Sub-Basin

Drilling Optimization of Tight Sands and Shale Gas Reservoir in Jambi Sub-Basin Based on Pore Pressure Estimation Using Drilling Efficiency Mechanical Specific Energy (DEMSE) and Bowers Methods

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