Torthaí cuardaigh - "bottom-hole pressure"
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A Novel Adaptive Transient Model of Gas Invasion Risk Management While Drilling
Foilsithe / Cruthaithe 2025-06-01Ábhair: Faigh an téacs iomlánThe deep and ultra-deep oil and gas resources often have the characteristics of high temperature and high pressure, with complex pressure systems and narrow safety density windows, so risks such as gas invasion and overflow are easy to occur during the drilling. In response to the problems of low ma...
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Enhancing Reservoir Modeling via the Black Oil Model for Horizontal Wells: South Rumaila Oilfield, Iraq
Foilsithe / Cruthaithe 2025-07-01Ábhair: Faigh an téacs iomlánHorizontal wells have revolutionized hydrocarbon production by enhancing recovery efficiency and reducing environmental impact. This paper presents an enhanced Black Oil Model simulator, written in Visual Basic, for three-dimensional two-phase (oil and water) flow through porous media. Unlike most e...
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SELECTING OPTIMAL DESIGN OF A HORIZONTAL WELL BY NUMERICAL MODELING
Foilsithe / Cruthaithe 2022-05-01Ábhair: Faigh an téacs iomlánComputer aided design of a horizontal well without flush tubes providing optimal operating conditions with regard to varying pressure along horizontal well length, to the presence of deviated and slant segments is considered. As a result a well-head pressure - flow rate plot is computed. Allowable v...
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TECHNOLOGY FOR REMOTE SANDY CLAY CAPS FROM SLAUGHTER SPLITTERS GAS WELLS IN DEPRESSION
Foilsithe / Cruthaithe 2022-05-01Ábhair: Faigh an téacs iomlánElaboration of technology for clay-sand plug removal from multi-branch gas wells by foam flushing of bottom hole under depression in the system «well-reservoir» is considered in the paper. Mathematical model and algorithm to calculate the bottom hole pressure and the velocity of up-stream flow when...
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Development of Machine Learning Models for Sandface Pressure Prediction in Oil Well
Foilsithe / Cruthaithe 2025-07-01“…This study employs the Society of Petroleum Engineers' (SPE) Rate Transient Analysis (RTA) dataset to predict Sandface Pressure or Bottom Hole Pressure (BHP) using Decision Tree (DT) models. …”The Oil & Gas (O&G) industry is increasingly leveraging Machine Learning (ML) techniques to predict well performance indicators, estimate missing operational metrics, and mitigate unexpected operational failures. However, the availability of extensive and high-quality datasets remains a majo...
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A review of Wellhead pressure reduction methods in hydraulic fracturing
Foilsithe / Cruthaithe 2025-05-01“…By analyzing the fundamental relationships among wellhead pressure, hydrostatic column pressure, frictional drag, and bottom-hole pressure, this paper summarize methods to lower wellhead pressure, including reducing friction, optimizing fracturing fluid properties, and decreasing fracture pressure. …”Abstract Wellhead pressure is a critical parameter in hydraulic fracturing, as excessive pressure poses significant risks to equipment, such as pump trucks, and personnel, potentially leading to operational hazards and accidents. Therefore, effective reduction of wellhead pressure is essential for e...
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An iteration-free approach for determining the average reservoir pressure and original gas in place by production data analysis: Methodology and field cases
Foilsithe / Cruthaithe 2025-06-01“…Compared with current techniques, this methodology avoids the iterative calculation of pseudo-time and pseudo-pressure functions, lowers the multiplicity of type curve analysis, and is applicable in different production situations (constant/variable gas flow rate, constant/variable bottom-hole pressure) with a broad range of applications and ease of use. …”Current gas well decline analysis under boundary-dominated flow (BDF) is largely based on the Arps' empirical hyperbolic decline model and the analytical type curve tools associated with pseudo-functions. Due to the nonlinear flow behavior of natural gas, these analysis methods generally requir...
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Development of 3D flow diagnostic numerical simulator and rock property modelling for a homogeneous faulted reservoir
Foilsithe / Cruthaithe 2024-02-01“…At the early stages of the reservoir bottom-hole pressure for injector I1(about 7000psia) and three producers P1, P2 and P3 remains constant over time (about 3600psia) thanks to pressure support by I1. …”Research has shown that faults, especially sealing faults, have become a barrier to flow. Flow diagnostics, on the other hand, are straightforward and controlled numerical flow experiments that are performed to examine a reservoir model, build links and offer rudimentary volume estimates as well as...
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Research and Application of Low-Velocity Nonlinear Seepage Model for Unconventional Mixed Tight Reservoir
Foilsithe / Cruthaithe 2025-07-01“…In the nonlinear seepage model, the bottom hole pressure of the water injection well increases by 10.56% compared to the linear model, indicating that water injection is more difficult in the beach sand reservoir. …”Due to factors such as low porosity and permeability, thin sand body thickness, and strong interlayer heterogeneity, the fluid flow in the tight reservoir (beach-bar sandstone reservoir) exhibits obvious nonlinear seepage characteristics. Considering the time-varying physical parameters of different...
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