Study on the Effect of an Alternate Injection Pattern of Proppant on Hydraulic Fracture Closure Morphology

Processes, Journal Year: 2024, Volume and Issue: 12(11), P. 2332 - 2332

Published: Oct. 24, 2024

In previous studies of the transportation proppants within fractures and morphology proppant-supported fractures, researchers have generally treated as static overlooked interactions between proppant during dynamic closure caused by filtration. To address this limitation, we propose a semi-implicit method to calculate complete fluid–structure interaction equations for fracture, fluid, proppant. The results show that there are three types closed fracture patterns formed alternate injection at end filtration loss, third pattern injecting small particles first then large has best support length filling effect. More effects particle size injected on after loss shown graphically analyzed in detail.

Language: Английский

---

Numerical Modeling of Hydraulic Fracturing Interference in Multi-Layer Shale Oil Wells

Processes, Journal Year: 2024, Volume and Issue: 12(11), P. 2370 - 2370

Published: Oct. 29, 2024

Multi-layer horizontal well development and hydraulic fracturing are key techniques for enhancing production from shale oil reservoirs. During development, the performance well-pad affected by depletion-induced stress changes. Previous studies generally focused on interference within layers, infilled multi-layer was not thoroughly investigated. This study introduces a modeling workflow based finite element displacement discontinuity methods that accounts dynamic porous media flow, geomechanics, modeling. It quantitatively characterizes in situ alteration various layers caused historical of parent wells quantifies infill wells. In changes reorientation non-planar propagation fractures were simulated. Thus, infill-well interferences reservoirs developed Non-planar is parent-well history production, infilling cluster number. They also affect principal reorientations reversal paths. Interwell can be decreased optimizing layer, timing, numbers. extends numerical investigation interwell to development.

Language: Английский

---

Predicting Water Flowing Fracture Zone Height Using GRA and Optimized Neural Networks

Processes, Journal Year: 2024, Volume and Issue: 12(11), P. 2513 - 2513

Published: Nov. 12, 2024

As coal mining depths continue to rise, consideration of WFFZ elevations is becoming increasingly important mine safety. The goal was accurately predict the height effectively prevent and manage possible roof water catastrophes ensure ongoing safety mine. To achieve this goal, we combined particle swarm optimisation (PSO) algorithm with a backpropagation neural network (BPNN) in order enhance accuracy forecast. present study draws upon capacity PSO conduct global searches nonlinear mapping capability BPNN. Through grey relational analysis (GRA), correlation degree as follows: thickness > depth overburden structure width dip. GRA has identified between five influencing factors WFFZ, among these, thickness, depth, all show strong correlations, dip seam shows good correlation. weight ranking obtained by PSO-BPNN method same that method. Based on two actual cases, relative errors prediction results after implementation were 2.97% 3.47%, while BPNN before 18.46% 4.34%, respectively, indicating provides satisfactory demonstrating PSO-optimised easy use yields reliable results. In paper, model under influence only established for Northwest Mining Area. With continuous progress technology research, can consider more affecting hydraulic fracturing development zones future improve comprehensiveness prediction.

Language: Английский

---

High-Precision Permeability Evaluation of Complex Carbonate Reservoirs in Marine Environments: Integration of Gaussian Distribution and Thomeer Model Using NMR Logging Data

Journal of Marine Science and Engineering, Journal Year: 2024, Volume and Issue: 12(12), P. 2135 - 2135

Published: Nov. 22, 2024

Accurate evaluation of permeability parameters is critical for the exploration and development oil gas fields. Among available techniques, assessment based on nuclear magnetic resonance (NMR) logging data one most widely used precise methods. However, rapid biochemical variations in marine environments give rise to complex pore structures strong reservoir heterogeneity, which diminish effectiveness traditional SDR Timur–Coates models. To address these challenges carbonate reservoirs, this study proposes a high-precision method that integrates Gaussian distribution model with Thomeer more accurate calculations using NMR data. Multimodal distributions accurately capture size multiscale pores. In study, we innovatively employ function construct NMR-derived pseudo-pore curves. Subsequently, are derived from parameters, enabling calculation. The application dolomite intervals Asmari Formation, Section A, within Oilfield A southeastern Iraq, demonstrates its superior performance under both bimodal unimodal distributions. Compared models, approach significantly reduces errors, providing crucial support reservoirs hydrocarbon resources.

Language: Английский

---

Development of a Conceptual Model for the Information and Control System of an Autonomous Underwater Vehicle for Solving Problems in the Mineral and Raw Materials Complex

Energies, Journal Year: 2024, Volume and Issue: 17(23), P. 5916 - 5916

Published: Nov. 25, 2024

This study presents the development of a conceptual model for an autonomous underwater vehicle (AUV) information and control system (ICS) tailored mineral raw materials complex (MRMC). To address challenges exploration, such as harsh conditions, high costs, personnel risks, comprehensive was designed. built using correlation analysis expert evaluations to identify critical parameters affecting AUV efficiency reliability. Key elements, including pressure resistance, communication stability, energy efficiency, maneuverability, were prioritized. The results indicate that enhancing these elements can significantly improve performance in deep-sea environments. proposed optimizes ICS, providing foundation designing advanced AUVs capable efficiently executing tasks. By integrating innovations, aims boost operational productivity, ensure safety, open new avenues resource exploration. study’s findings highlight importance focusing on developing effective reliable solutions, thus addressing pressing needs MRMC while promoting sustainable management.

Language: Английский

---

Reliability Analysis of a Drilling Bit Penetration Model in Oil and Gas Wells: A Case Study

International journal of engineering. Transactions B: Applications, Journal Year: 2024, Volume and Issue: 37(11), P. 2213 - 2222

Published: Jan. 1, 2024

Rate of drilling bit penetration into the subsurface formations, referred to as rate (ROP), is considered main optimization parameter in operation. ROP results a faster and cheaper The depends on several factors, including but not limited rock properties, fluid characteristics operational parameters. Due diversity affecting parameters, prediction challenging task. There are various mathematical relations literature estimate ROP. However, these developed based specific conditions, where data from field or experimental tests used develop relations. In this work, three wells one onshore oil fields gathered then performances some common models investigated. Results show that simplified Bourgoyne Young model can accurately predict mentioned field, which makes applicable for planning new offset future. It should be noted requires fewer input data, it more applicable. average R2 coefficient 0.91, higher than other models. confirmed applicability model.

Language: Английский

---

Helium Geochemical Characteristics and Favorable Zones in the Tarim Basin: Implications for Helium Exploration

Processes, Journal Year: 2024, Volume and Issue: 12(7), P. 1469 - 1469

Published: July 13, 2024

Helium is an irreplaceable ore resource for many applications, such as nuclear magnetic resonance, aviation, semiconductors, and energy. Extracting helium in a free state from natural gas currently the only economical approach at industrial level. In this study, we compiled geochemical data of 719 samples 36 oil fields Tarim basin that include experimental results previously reported data. primarily crustal origin Basin according to isotope characteristics (not exceeding 0.1 Ra), except Ake field has not more than 7% mantle helium. concentrations diverse tectonic units vary considerably. Oil-type gas, on whole, higher concentration relative coal-type gas. Abundant flux, favorable fault system between source-reservoir system, no strong charging gaseous hydrocarbons, good sealing capacity are important factors control formation helium-rich fields. Considering both reserves, located Southwest Depression Tabei Uplift can be regarded major zones further deployment extraction.

Language: Английский

---

Overpressure of Deep Jurassic System in the Central Junggar Basin and Its Influence on Petroleum Accumulation

Processes, Journal Year: 2024, Volume and Issue: 12(8), P. 1572 - 1572

Published: July 26, 2024

New discoveries and breakthroughs have been made in recent years the deep parts of central Junggar Basin, where Jurassic reservoirs are unconventionally dense with abnormal overpressure development. The development distribution this basin influence on petroleum accumulation were analyzed. There two extremely high systems Badaowan Xishangyao formations, from strata overburdened was transferred. Paleopressure simulations show that hydrocarbon generation pressurization main source rocks Formation is a process characterized by at least phases increase followed phase release. Overpressure inhibits thermal evolution study area, resulting lower values maturity parameter Ro depths > 4500 m compared normal < m. very dense, strong compaction little retention primary pore space, indicating did not protect pores, while over-pressured acidic fluid promoted formation dissolved space. faults key factors migration, they jointly control Basin.

Language: Английский

---

Reaction Molecular Dynamics Study of Combustion Mechanism in Heavy Oil Thermal Recovery

Energies, Journal Year: 2024, Volume and Issue: 17(21), P. 5290 - 5290

Published: Oct. 24, 2024

The organic material present at the same depth as oil in reservoirs has potential for conversion, indicated by analyses conducted before and after heavy combustion. Therefore, this study, we examined oxidation pyrolysis reaction pathways of hydrocarbons, specifically benzaldehyde (C7H6O) naphthalene (C10H8), combustion using molecular dynamics simulations. results showed that primary products formed under various temperature conditions included H2O, HO2, CO, CO2. We determined number molecules, such HO H, well their variations, found activating group functions an electron donor, while inactivating serves acceptor. reactions synthesis pathway were also explored. C-C dissociation early stages process bond later investigated through dynamic simulations different temperatures, 3000 K, 3500 4000 with a particular focus on network K. application method to research was objective work. This study aims provide novel approach investigating hydrocarbon conversion high temperatures offer recommendations enhanced recovery.

Language: Английский

---

Experimental Study on the Efficiency of Fracturing Integrated with Flooding by Slickwater in Tight Sandstone Reservoirs

Processes, Journal Year: 2024, Volume and Issue: 12(11), P. 2529 - 2529

Published: Nov. 13, 2024

Tight reservoirs, with their nanoscale pore structures and limited permeability, present significant challenges for oil recovery. Composite fracturing fluids that combine both recovery capabilities show great potential to address these challenges. This study investigates the performance of a slickwater-based fluid, combined high-efficiency biological displacement agent (HE-BIO), which offers production enhancement environmental compatibility. Key experiments included tests on single-phase flow, core damage assessments, interfacial tension measurements, evaluations. The results showed (1) slickwater fluid effectively penetrates rock matrix, enhancing while minimizing impact; (2) it causes substantially less reservoir compared traditional guar gum especially in cores little higher initial permeability; (3) improves as HE-BIO concentration increases from 0.5% 2.5%, 2.0% optimal maximizing rates. These findings provide foundation optimizing tight sandstone highlighting integrated enhance sustainable

Language: Английский

---