A high-resolution three-dimensional (3D) outcrop model of a Jurassic carbonate ramp was used in order to perform series detailed and systematic flow simulations. The aim this study test the impact small- large-scale geological features on reservoir performance oil recovery. digital contains wide range sedimentological, diagenetic structural features, including discontinuity surfaces, shoal bodies, mud mounds, oyster bioherms fractures. Flow simulations are performed for numerical well...

The personalized recommendation systems could better improve the service for network user and alleviate problem of information overload in Internet.As we all know, key point being a successful system is performance algorithm.When scholars put forward some new algorithms, they claim that algorithms have been improved respects, than previous algorithm.So need evaluation metrics to evaluate algorithm performance.Due scholar didn't fully understand mechanism algorithms.They mainly emphasized...

Excessive water production is an enduring problem in the oil industry that has always been unbearable burden on environment and a great damage to ultimate recovery. Gel treatment routinely used for decreasing production. Disproportionate permeability reduction (DPR) natural phenomenon some polymer gels can reduce more than oil. The conformance improvement treatments with DPR effectively cut without substantially reducing productivity fractured reservoirs. At present, there are no widely...

The relationship between the duration of untreated psychosis and long-term clinical outcomes remains uncertain.Prospectively assess on in a sample individuals with first-onset schizophrenia treated at Pudong Mental Health Center from January 2007 to December 2008.Information about general health, psychotic symptoms social functioning were collected using Brief Psychiatric Rating Scale (BPRS), Treatment Emergent Symptom (TESS), Morningside Rehabilitation Status (MRSS), Social Disability...

Alkali-surfactant-polymer (ASP) flooding, which can reduce interfacial tension (IFT) and the mobility ratio between oil water phases, has been proven to be effective for enhancing recovery in laboratory experiments field pilots. However, study of interactions within alkali-surfactant-polymers chemical flooding is neither comprehensive nor complete until now. Laboratory were conducted a corresponding numerical simulation model was established characterize multiple component during ASP...

The development of recommendation system comes with the research data sparsity, cold start, scalability, and privacy protection problems. Even though many papers proposed different improved algorithms to solve those problems, there is still plenty room for improvement. In complex social network, we can take full advantage dynamic information such as user’s hobby, relationship, historical log improve performance system. this paper, a new algorithm which based on start problem traditional...

As a storage area of dangerous chemicals, oil and gas areas are prone to major leakage, fire explosion accidents. In order study the multi-factor catastrophic effect tank under influence domino accident, non-linear relationship between various disaster factors in is obtained through analysis cooperative coupling other research fields. The accident scene based on evolution scene, establishment Bayesian network model. Based actual case established model, risk control analyzed. results show...

Abstract Carbonate reservoirs contain a significant portion of the world’s proven hydrocarbon reserves but are challenging to produce due their complex lithologies, structural heterogeneities, and neutral oil-wet nature. Increasing recovery requires better understanding how different processes respond heterogeneities inherent these reservoirs. This will contribute design appropriate engineering solutions which extend life mature fields develop green more effectively. We use high-resolution...

In-depth water flooding profile modification is a new problem for low permeability formation under fracturing. Profile control study in-depth cross flow which couples fracture and matrix neither comprehensive nor complete at present. Artificial hydraulic fracturing core manufactured to conduct flood experiment. mechanisms of gel-nitrogen-foam are revealed based on microstructure analysis mechanical stability evaluation. The instantaneous durability evaluated by breakthrough pressure residual...

A novel methodology was developed based on oil-based foam to systematically investigate foamy oil stability. The first step generate an analogue model that has similar characteristics of oil. Then, the effects key factors were investigated with created by a new experimental procedure. Moreover, statistical approach utilized ensure reliability data. Finally, we proposed method describe rupture and simulate its defoaming kinetics. results showed can be precursors studies actual other petroleum foams.

In order to study the group behavior under severe fire accidents in chemical industrial park, a model of was built based on epidemic and system dynamics (SD) theory method. The influencing factors were selected through analysis previous research. And taking as main research object, causality relationships between analyzed. On this basis, software vensim applied finish dynamic simulation, then dealt with influence change government credibility, public sentiment events. simulation results show...

Polymer flooding has been widely used in the development of offshore oilfield as its significant EOR performance, which can achieve high oil recovery during short service life platform. Effectiveness evaluation is an important aspect polymer application, and results will affect adjustment flooding. However, there not too much study focusing on this field until now. In paper, model was developed to estimate effectiveness The response characteristics were studied by core experiments....

Sodium alginate and natural fiber were used as modifiers to prepare sodium type biological composites. The mechanical properties characterized by universal testing machine, the thermal analyzed conductivity, effects of wood straw content on comprehensive composite materials evaluated relevant instruments, feasibility building energy-saving wall insulation was evaluated. results show that flexural strength, compressive strength elastic modulus composites increase with content. When is 100%,...

With the development of computer medical imaging technology, three-dimensional technology has been gradually applied in medicine. We try to investigate application value 3D preoperative evaluation retroperitoneal tumors. The clinical data 70 tumor cases admitted center were retrospectively analyzed. abdominal CT images converted using XMQB liver 2.0 software. These imported into XMQB-I human organ model printing equipment, and physical models facilitate surgical strategy. reestablished...

The sintering of sinter is a dynamic process with cumbersome mechanism, many influencing factors, and long process. traditional quality inspection method uses cup experiment, which has experiment period lack timely feedback results. production complex system significant nonlinearity, strong coupling large hysteresis, the involves intermediate parameters physical chemical changes. At present, scholars have done lot research on data-based prediction algorithm, successfully use algorithm to...

This paper introduces the Grey theory to evaluate injection-production well connectedness in polymer flooding reservoir. Gery can give law of data by analysis and calculation. Through production dynamic calculation using method, realized quantitative evaluation Comparing calculate method with tracer test result shows that injection- get reliable accurate results. be used

In this paper, we present a new detailed placement algorithm including legalization and optimization for mixed-mode IC designs. The main contributions of paper include the following: 1) It proposes reliable scheme which ensure to find feasible placement. 2) gives linear programming mode can optimal solution fixed-order cells in segment. 3) A flow that combines Cells Swap Reorder technique reduce wirelength. proposed is tested on mPL6 global ISPD02 benchmarks. Experimental results show get...

The current status of sintering intelligent optimal ore allocation and its research is outlined, the work domestic foreign ironmongers summarized, existing methods technologies are analyzed, further development improvement prospected. It pointed out that with minimum energy consumption lowest cost per ton iron as optimization target, establishment integrated sinter-blast furnace will be one directions allocation.