Just as Libya resumes oil exports from recently shuttered ports, an attack on its largest field is setting back progress yet again. Oil production at Libya’s Sharara field, the country’s largest, was resuming on 6 September after a valve was reopened on a pipeline shut by an armed group for more than 2 weeks, Libyan oil industry sources said. Two more oil fields in Libya are being closed after an armed group took over pipelines to both deposits, further disrupting the OPEC nation’s plan to boost crude production. Libya halted loadings from its biggest oil field in the latest disruption to the nation’s crude production and shipments. Libya’s biggest oil field, Sharara, is “back to normal” after a disruption caused by protests in the politically fragmented country, the state National Oil Corp. (NOC) said.
Anadarko Petroleum wants a fleet of at least six vehicles with armor heavy enough to stop AK-47 bullets at its natural-gas project in Mozambique. And it needs them soon. By examining two very different security-risk environments, this paper will illustrate how easily security-related human-rights risks can go unnoticed unless care is taken early in the risk-management process. A third Damen security vessel will be deployed to provide security and other support services to the international offshore oil companies active off the coast of Nigeria in the Gulf of Guinea, in cooperation with the Nigerian Navy. Sinopec’s Shengli oil field became the latest victim of the ransomware that hobbled big business across the globe.
When the head of Libya’s state energy company visited Sharara oil field in early July, community leaders and workers crowded into a conference room to ask about jobs, training, and services for local people. Public acceptance is a major challenge for the siting of facilities. The offering of compensation to communities potentially helps to create the perception of a fairer distribution of local risks and nonlocal benefits. This may help to prevent or solve siting controversies. Anadarko Petroleum said late on 30 June that it has tested more than 4,000 active oil and gas lines and plugged another 2,400 inactive ones per a state order issued after a fatal home explosion in Firestone, Colorado, in April.
At its core, ESG investment involves gauging a company’s long-term, rather than short-term sustainability. Equinor is using its digital transformation to be more sustainable. The report, the first by a Chinese company in Saudi Arabia, outlines how Sinopec is fulfilling its economical, safety, environmental, and social responsibilities in Saudi Arabia. This paper presents the recent expansion of UNFC guidance to cover social and environmental effects and the further transformation of the system to make it a valuable tool in resource management for governments and businesses. On Earth Overshoot Day, humanity will have used nature’s resource budget for the entire year, according to the Global Footprint Network, an international sustainability organization. The ruling protects half a million acres of land in the Amazon forest on which the Waorani have lived for centuries from being earmarked for oil drilling, campaigners said. US Shale Firms Put Up $16.5 Million To Build West Texas Charter Schools Twenty top US energy companies agreed to contribute $16.5 million to open new schools in West Texas, where an influx of oil and gas workers have strained schools, roads, and other civic services.
A ring of at least five people targeted syntactic foam, a key material for deepwater oil drillers that also has military and commercial uses. The author argues that the advent of cloud technology should not be regarded as a further challenge to security but an opportunity to revitalize and improve a company’s defenses dramatically. Cybersecurity firm Dragos has identified a new threat to the oil and gas industry, HEXANE. The company has also released a report assessing the cybersecurity environment in oil and gas. A recent episode involving three, allegedly Iranian, vessels and a British-flagged tanker near the Strait of Hormuz is just one of the recent events of this nature.
Oil production at Libya’s Sharara field, the country’s largest, was resuming on 6 September after a valve was reopened on a pipeline shut by an armed group for more than 2 weeks, Libyan oil industry sources said. When the head of Libya’s state energy company visited Sharara oil field in early July, community leaders and workers crowded into a conference room to ask about jobs, training, and services for local people. Libya’s oil production has plunged by almost a quarter after workers shut the OPEC country’s biggest field to protest lack of medical care following the death of a colleague, a person familiar with the matter said.
Transmitting electrical current to the subsurface can create special considerations. Successful application of electromagnetic heating often requires a multi-disciplinary approach combining electric engineering and petroleum engineering. To assist petroleum engineers considering this approach, this article identifies some of the issues that an electrical engineer might normally anticipate and address. In most practical situations, we are concerned with fields that vary periodically in time (the sinusoidal steady state generally). In these cases the electrical phenomena are properly described by Maxwell equations in terms of complex vector field intensities of electric and magnetic fields (E and H); complex vector field electric, magnetic, and current densities (D,B,J); complex charge concentrations (ρc); and complex material parameters: conductivity, permittivity, and permeability (σ, ε, μM).
Yong, Wen Pin (PETRONAS Research Sdn. Bhd.) | Azahree, Ahmad Ismail (PETRONAS Research Sdn. Bhd.) | M Ali, Siti Syareena (PETRONAS Research Sdn. Bhd.) | Jaafar Azuddin, Farhana (PETRONAS Research Sdn. Bhd.) | M Amin, Sharidah (PETRONAS Research Sdn. Bhd.)
This paper presents a two-way coupled modelling approach to simulate CO2 movement and containment with geochemical reactions and geomechanical effects. CO2 storage simulation studies cover three main disciplines, reservoir engineering, geochemistry and geomechanics. This new approach of coupled modelling simulation, by simultaneously simulate both effects of geochemistry and geomechanics, is considered as a more representative and better predictive modelling practice.
The integration of geochemistry and geomechanics effects is important for CO2 sequestration modelling. There are a number of published studies on coupled modelling for CO2 storage. However, the majority of the studies has only covered dynamic-geomechanics or dynamic-geochemistry interaction, without considering any direct geomechanics-geochemistry interaction in a reservoir condition. It is crucial to understand the integrated effects when injected CO2 dissolves into formation water and interacts with formation rock. Depending on in-situ conditions, the formation water with dissolved CO2 could weak or strengthen the formation stress due to geochemical reactions of formation minerals. Therefore, coupled modelling is needed to ensure the long-term safety of CO2 containment at a CO2 storage site with the interactions among geomechanical, geochemical and dynamic fluid flow, and especially to understand the slow and not experimentally accessible mineral reactions.
In this paper, a high CO2 content gas field in Malaysia with high temperature (150°C) and high pressure (350 bar) has been studied using integrated coupled modelling approach. The simulation input parameters are first investigated and collected from literature and laboratory studies. A two-way coupled modelling simulation with the consideration of geochemistry and geomechanics effects is desirable because it allows the updates of reservoir properties back and forth in every time step. Different CO2 trapping mechanisms, long term fate analysis, subsidence and heaving analysis, and changes of porosity and permeability are investigated. The time frame of simulation studies consists of CO2 injection period (15 years) and post CO2 injection period (500 years).
During the first 15 years of CO2 injection, 95.13% of injected CO2 is structurally trapped, 3.67% of CO2 is soluted in formation water and 1.2% is trapped by mineralization. About 0.041m of heaving is observed at the injection area while about 0.05m of subsidence is observed at the production area. In the investigation of long-term CO2 fate, it is observed that CO2 gas will be trapped between the lighter hydrocarbon gas layer and aquifer due to density difference.
Chen, Xin (BGP) | Wang, Guihai (CNODC) | Wang, Zhaofeng (CNODC) | Liu, Zundou (CNODC) | Liu, Zhaowei (CNODC) | Cui, Yi (CNODC) | Tian, Wenyuan (CNODC) | Wei, Xiaodong (BGP) | Hou, Liugen (BGP) | Yang, Ke (BGP) | Chen, Gang (BGP) | Xia, Yaliang (BGP) | Yan, Xiaohuan (BGP) | Zhang, Zeren (BGP) | Liu, Jingluan (BGP)
To improve the accuracy of permeability prediction, seismic constraint and sedimentary facies has often been adopted in conventional methods. However, it is porosity that both of them constrain, rather than permeability, and different pore structure with different permeability, the accuracy of permeability prediction cannot be radically improved. To address the problem of permeability prediction in carbonate reservoir, new permeability prediction technique workflow were summarized based on pore structure analysis and multi-parameters seismic inversion: division reservoir types based on the pore structure, construction of the rock types identification curve, carry out a rock type inversion and a porosity inversion constrained by seismic impedance respectively, and then get a final permeability prediction volume according to the porosity-permeability relationship and pore structure of core samples. It breaks the bottleneck that is difficult for seismic impedance (continuous variable) to constrain rock type (discrete variable), then constrains pore structure (continuous variable) related to rock type instead, and converts it into rock type using multi-parameters seismic inversion. According to the certification of new wells, this workflow have been applied successfully in carbonate reservoir of H oilfield in Middle East, it not only improves the prediction of rock type in space, but also permeability prediction accuracy.
Chen, Xin (BGP) | Zhang, Suhong (BGP) | Ou, Jin (CNODC) | Ye, Yufeng (CNODC) | Xu, Lei (CNODC) | Ma, Yingze (CNODC) | Wei, Xiaodong (BGP) | Yang, Ke (BGP) | Chen, Gang (BGP) | Zhou, Guofeng (BGP) | Xia, Yaliang (BGP) | Yan, Xiaohuan (BGP) | Zhang, Zeren (BGP) | Liu, Jingluan (BGP) | Zhou, Xiaoming (BGP)
In order to improve the accuracy of reservoir prediction results, the conventional method usually include seismic inversion, and seismic attribute analysis. Due to the limitation of the vertical resolution of seismic data, it is hard to identify the thin reservoir by seismic attributes directly. In order to improve the prediction accuracy of reservoir, this paper show a new reservoir characterization technique based on geological seismic conditioning. The new method mainly includes five steps. The first step is sedimentary facies classification based on the geological seismic analysis, such as core data, thin section analysis, FMI logging, NMR logging and conventional logging. The second step is modern sedimentary model optimization and forward modelling. In order to establish a reasonable sedimentary facies model, a similar barrier island modern sedimentary model was chosen. To understand the geological significance of seismic data, two different dominant frequency were designed for forward modelling based on the sedimentary facies model and petrophysical analysis. The third step is seismic conditioning under the guide of sedimentary facies model forward modelling. The next step is seismic constraint stochastic inversion, and the last step is reservoir characterization and new well confirm. The application of this method in A oilfield shows that the techniques not only improved the identification ability of the reprocessing seismic data, but also improved the prediction accuracy of the reservoir characterization results. This new reservoir characterization technique can integrated multidisplinary information, such as modern sedimentary model, well data and seismic data, to establish a reasonable sedimentary model, to enhance the resolution of seismic data by conditioning, and get an reasonable reservoir characterization results based on the seismic inversion.