Risultati della ricerca - bottom-hole pressure
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A Novel Adaptive Transient Model of Gas Invasion Risk Management While Drilling
Pubblicazione 2025-06-01Soggetti: TestoThe 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
Pubblicazione 2025-07-01Soggetti: TestoHorizontal 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
Pubblicazione 2022-05-01Soggetti: TestoComputer 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
Pubblicazione 2022-05-01Soggetti: TestoElaboration 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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A review of Wellhead pressure reduction methods in hydraulic fracturing
Pubblicazione 2025-05-01“...This study provides a systematic review of existing research on reducing wellhead pressure during hydraulic fracturing. 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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Development of Machine Learning Models for Sandface Pressure Prediction in Oil Well
Pubblicazione 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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Increasing the efficiency of well killing in depleted gas condensate fields with extremely low reservoir pressures
Pubblicazione 2024-06-01“...The problem is studied by the example of gas condensate fields at the final stage of development, where production wells have abnormally low reservoir pressures and their killing for repair work is a serious challenge requiring a search for new solutions. ...”The problem is studied by the example of gas condensate fields at the final stage of development, where production wells have abnormally low reservoir pressures and their killing for repair work is a serious challenge requiring a search for new solutions. The work is motivated by the need to create...
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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
Pubblicazione 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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Estimation of the Efficiency of the Operation of The Production Gas Well and Transfer It to the Stage of Capital Repair
Pubblicazione 2022-07-01“...The conditions for selecting wells for successful workover have been determined, taking into account the value of the current reservoir pressure, which allows, at the required depression, to prevent the fallout of retrograde condensate in the bottom-hole formation zone. ...”Introduction: The article discusses the reasons for shutting down production gas wells (PGW) and approaches to predicting the critical parameters in them to assess the need for transfer to the overhaul stage. The geological, technological and analytical stages of transferring wells to well workover...
Testo
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THE USE OF DIFFERENT TECHNOLOGIES OPERATE SPONTANEOUSLY STOPPING GAS WELLS ON THE FIELDS OF THE FAR NORTH
Pubblicazione 2022-07-01“...The current state of the development of Cenomanian deposits is associated with a significant decrease in reservoir pressure relative to the original and as a result of a decrease in the productivity of producing wells. ...”Introduction. The current state of the development of Cenomanian deposits is associated with a significant decrease in reservoir pressure relative to the original and as a result of a decrease in the productivity of producing wells. As a result, the conditions of removal from the bottom of wells com...
Testo
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ELABORATION OF RECOMMENDATIONS FOR DEVELOPMENT AND SURVEY OF WELLS WITH THE AID OF JET DEVICES AFTER HYDRAULIC FRACTURING
Pubblicazione 2022-07-01“...Existing solutions to develop and survey wells do not prevent complications after hydraulic fracturing, such as the active removal of proppant from the bottom-hole zone with the backfill of well bottom-hole and a decrease in well flow rates. ...”Introduction. The paper provides recommendations for the development and survey of wells with the aid of jet devices, depending on the nature of the inflow after hydraulic fracturing. Existing solutions to develop and survey wells do not prevent complications after hydraulic fracturing, such as the...
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Maintaining Efficient Operation of Low-Yield Wells During the Development of the Cenomanian Deposit
Pubblicazione 2024-04-01“...Thus, it is recommended to replace the lift string for each specific well by analyzing its operating conditions and using temporary killing technology using special lightweight solutions that do not lead to contamination of the bottom-hole zone of the formation. During the development of Cenomanian deposits in the fields of the Far North, in the process of reducing reservoir pressure, fluid accumulation occurs at the bottom. ...”The object of the study is the Cenomanian deposit during the period of self-damping of wells. The accumulation of droplet liquid causes destruction of the rock skeleton and increases pressure loss during gas movement in the well, which affects the dynamics of the operating stock indicators. The expe...
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Technological solutions to limit sand production from producing gas wells
Pubblicazione 2022-09-01“...The operation of gas and gas condensate fields at the final stages of development is accompanied not only by reducing the reservoir pressure and flooding the bottom hole formation zone with condensation and formation water, damage of productive layers and formation of clay-sand plugs at the bottom which leads to lower gas recovery and well productivity, reduces operation time for gas production equipment. ...”The operation of gas and gas condensate fields at the final stages of development is accompanied not only by reducing the reservoir pressure and flooding the bottom hole formation zone with condensation and formation water, damage of productive layers and formation of clay-sand plugs at the bottom w...
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Research and Application of Low-Velocity Nonlinear Seepage Model for Unconventional Mixed Tight Reservoir
Pubblicazione 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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Development of 3D flow diagnostic numerical simulator and rock property modelling for a homogeneous faulted reservoir
Pubblicazione 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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