How a Single Field Development is Becoming a Hub

2021 ◽  
Author(s):  
Francesca Felappi ◽  
Simone Giovannini ◽  
Giovanni Matteo Giuliani
Keyword(s):  
Gas Production ◽  
Gas Reservoirs ◽  
Field Development ◽  
Fast Tracking ◽  
Execution Phase ◽  
Future Production ◽  
Essential Facility ◽  
Single Field ◽  
Set Up ◽  
The Right

Abstract The work presented in this paper shows how a single development evolved in a main Production Hub to unlock stranded resources, fast tracking subsequent marginal gas discoveries, by improving the flexibility of the subsea and treatment facilities. The approach was supported by a coherent activity about exploration program in the area, JV partnership and contracting strategy. During the Execution phase of a subsea development, a new discovery was made in deep water, 35 km from the Floating Production Unit (FPU). Following this discovery, given the potential for further developments in the area (stranded gas reservoirs and further new gas discoveries), the decision of considering the FPU as a future Production Hub has been taken and FPU has been converted accordingly. The inlet facilities have been designed to guarantee the possibility of receiving well fluids at different pressure levels (high pressure for the new developments and low pressure for productions in depletion) with high production flexibility. Several verifications have been performed to maximize the production flowrates at different pressure values, according to the envelope of data from exploration activities, via adequate arrangements for future expansion. These verifications considered the FPU as it is and with the implementation of minor and major modifications (including retrofitting offshore of new process modules). Design and timing of new equipment as minor/major brownfield modification have been set-up to cope with the modulate field profiles to keep FPU operating flowrate to its maximum value for longer time. In particular, the choice of new booster gas compressors has been planned, in order to select the best configuration for the most recent Hub development plan and to install them at the right time. Converting a barycentric infrastructure in a Hub ensures a significant reduction of CAPEX for future developments (limited to subsea tie-backs only), allowing to reconsider projects previously evaluated economically unsustainable. Moreover, the Hub shall guarantee a long-term gas production by continuous addition of new discoveries in the area, making it an essential facility for the energy future of the Country.

Production Performance Analysis of Unconventional Gas Reservoirs with Different Well Trajectories and Completion Techniques

2015 ◽  
Author(s):  
Mehmet Cihan Erturk ◽  
Caglar Sinayuc
Keyword(s):  
Shale Gas ◽  
Synthetic Data ◽  
Gas Production ◽  
Production Performance ◽  
Coal Bed ◽  
Gas Reservoirs ◽  
Case Scenario ◽  
Unconventional Gas ◽  
Future Production ◽  
Unconventional Gas Reservoirs

Abstract The significance of unconventional gas reservoirs has been increasing for recent years owing to economic viability of their development, therefore assessment of the challenges and common pitfalls regarding those resources have been gaining importance at the same time. In this regard, the optimization of production performance of these reservoirs with the different well trajectories and completion techniques and identifying the best case scenario become more significant. That is absolutely challenging process due to the several reasons such as ultra-low permeability, desorption effect, and complex geological characteristics. However, it is possible to analyze the various parameters and observe their impact on each system with the help of advances in algorithms, computer power, and integrated software. The objective of this work is to investigate and understand the effect of some reservoir and completion parameters on the future production performance of shale gas and coal bed methane (CBM) reservoirs. A practical model is constructed with the field and synthetic data for the analysis of gas production rate and cumulative gas production versus time in multi-layered shale gas and CBM reservoirs respectively. Changes in the thickness of various stratified layers, permeability, wellbore position, number of hydraulic fracture stage, and also production profile of each system are studied using different well trajectories. The results are obtained by running a series of reservoir simulation conducted by a commercial numerical simulator with dual porosity model for CBM and shale gas reservoirs.

Integrated Subsurface to Surface Modeling to Assess Reservoir Uncertainty Quantification to A Carbonate Reservoir

2020 ◽  
Author(s):  
A. Chaterine
Keyword(s):  
Uncertainty Quantification ◽  
Gas Production ◽  
Carbonate Reservoir ◽  
Production Volume ◽  
Production Forecast ◽  
Uncertainty Range ◽  
Field Development ◽  
Production Forecasting ◽  
Production Scheme ◽  
Rock Compressibility

This study accommodates subsurface uncertainties analysis and quantifies the effects on surface production volume to propose the optimal future field development. The problem of well productivity is sometimes only viewed from the surface components themselves, where in fact the subsurface component often has a significant effect on these production figures. In order to track the relationship between surface and subsurface, a model that integrates both must be created. The methods covered integrated asset modeling, probability forecasting, uncertainty quantification, sensitivity analysis, and optimization forecast. Subsurface uncertainties examined were : reservoir closure, regional segmentation, fluid contact, and SCAL properties. As the Integrated Asset Modeling is successfully conducted and a matched model is obtained for the gas-producing carbonate reservoir, highlights of the method are the following: 1) Up to ± 75% uncertainty range of reservoir parameters yields various production forecasting scenario using BHP control with the best case obtained is 335 BSCF of gas production and 254.4 MSTB of oil production, 2) SCAL properties and pseudo-faults are the most sensitive subsurface uncertainty that gives major impact to the production scheme, 3) EOS modeling and rock compressibility modeling must be evaluated seriously as those contribute significantly to condensate production and the field’s revenue, and 4) a proposed optimum production scenario for future development of the field with 151.6 BSCF gas and 414.4 MSTB oil that yields a total NPV of 218.7 MMUSD. The approach and methods implemented has been proven to result in more accurate production forecast and reduce the project cost as the effect of uncertainty reduction.

Process design and equipment selection for optimized steam and power concepts – the “zero” process steam sugar factory

2020 ◽  
pp. 40-50
Author(s):  
Boris Morgenroth ◽  
Thomas Stark ◽  
Julian Pelster ◽  
Harjeet Singh Bola
Keyword(s):  
Process Design ◽  
Sugar Industry ◽  
Electrical Power ◽  
Power Requirement ◽  
Equipment Selection ◽  
Good Potential ◽  
Set Up ◽  
The Right ◽  
Key Aspects ◽  
Steam Drying

Optimization of process steam requirement in order to maximize sugar recovery and export power along with manpower optimization is a must for sugar factories to survive under difficult conditions and to earn additional revenues. The process steam demand of greenfield and revamped plants has been reduced to levels of 32–38% from originally more than 50% steam on cane in the case of the brownfield plants. In addition, significant improvement in the power requirement of the plants has been achieved. Bagasse drying offers a good potential to improve the power export. Different available concepts are compared with a focus on bagasse steam drying and low temperature bagasse drying. In order to set up an optimized highly efficient plant or to optimize an existing plant to achieve competitive benchmarks, good process design and the right equipment selection are very important. Experience has been gained with multiple stage or double effect crystallization in the beet sugar industry offering further steam optimization potential. Vapour recompression is also an option to substitute live steam by electrical power. This even provides options to reduce the steam demand from the power plant for the sugar process down to zero. Key aspects concerning the process design and equipment selection are described.

Method for drawing forest maps by means of an office computer

1970 ◽  
Vol 22 ◽  
Author(s):  
R. Goossens ◽  
J. De Schuyter
Keyword(s):  
Classical Method ◽  
Similar Form ◽  
Code Number ◽  
Growing Stock ◽  
Forest Maps ◽  
Set Up ◽  
The Right ◽  
Computer Unit ◽  
Fixed Network

In  this article, we tried to perform the drawing of forest maps, together with  the calculations involved, automatically by means of relatively simple aids.      The computer unit used is an office computer Olivetti P203. As an example  the growing stock (in m3/ha) was mapped out. The proper inventory in the field is done  according to the classical method by means of a previously fixed network of  squares (70,7 m x 70,7 m), which corresponds to two plots a ha.     The quantity which is measured and mapped out (in this case the growing  stock) is in a similar form not very useful in mapping. Therefore a division  in classes (Ku) numbered from 0 to 9, is set up. An appropriate program  calculates for a certain number of points within this elementary square, to which  class they have to be assigned, whereas the typewriter prints the  corresponding code number on the right place.     Fig. 1 and the formulas (1), (2) and (3) represent the principle o[ the  calculations while fig. 2A and B reproduce the results printed by the  typewriter for a elementary square of respective 1” X 1” and 2” X 2”. The  whole of similar network of squares eventually results in a basical document,  on which the existing forest map with an adapted scale is laid (see appendix  3) and the class limits are drawn.     If desirable, the scale may be adapted when the forest map under discussion  is definitely reproduced.

New Mexico

2017 ◽  
Author(s):  
David K. Jones
Keyword(s):  
New Mexico ◽  
Board Of Directors ◽  
The State ◽  
Governance Model ◽  
The Board Of Directors ◽  
Set Up ◽  
The Right

The fight over an exchange had a very different dynamic in New Mexico because there were no loud voices on the right calling for the state to reject control. Republican Governor Susanna Martinez supported retaining control, but strongly preferred a governance model that allowed insurers to serve on the board of directors and limited the degree of oversight by the board on the types of plans that could be sold on the exchange. Governor Martinez vetoed legislation in 2011 that would have set up a different model of an exchange. Institutional quirks meant the legislature did not have the opportunity to weigh in again for two years, until 2013. By this point it was too late and the state had to rely on the federal website despite passing legislation to run its own exchange.

scholarly journals Incremental and acceleration production estimation and their effect on optimization of well infill locations in tight gas reservoirs

2021 ◽  
Author(s):  
Atheer Dheyauldeen ◽  
Omar Al-Fatlawi ◽  
Md Mofazzal Hossain
Keyword(s):  
Transient Flow ◽  
Development Planning ◽  
Main Role ◽  
Gas Reservoirs ◽  
Type Curves ◽  
Field Development ◽  
Drilling Performance ◽  
Well Location ◽  
Infill Drilling ◽  
Tight Formations

AbstractThe main role of infill drilling is either adding incremental reserves to the already existing one by intersecting newly undrained (virgin) regions or accelerating the production from currently depleted areas. Accelerating reserves from increasing drainage in tight formations can be beneficial considering the time value of money and the cost of additional wells. However, the maximum benefit can be realized when infill wells produce mostly incremental recoveries (recoveries from virgin formations). Therefore, the prediction of incremental and accelerated recovery is crucial in field development planning as it helps in the optimization of infill wells with the assurance of long-term economic sustainability of the project. Several approaches are presented in literatures to determine incremental and acceleration recovery and areas for infill drilling. However, the majority of these methods require huge and expensive data; and very time-consuming simulation studies. In this study, two qualitative techniques are proposed for the estimation of incremental and accelerated recovery based upon readily available production data. In the first technique, acceleration and incremental recovery, and thus infill drilling, are predicted from the trend of the cumulative production (Gp) versus square root time function. This approach is more applicable for tight formations considering the long period of transient linear flow. The second technique is based on multi-well Blasingame type curves analysis. This technique appears to best be applied when the production of parent wells reaches the boundary dominated flow (BDF) region before the production start of the successive infill wells. These techniques are important in field development planning as the flow regimes in tight formations change gradually from transient flow (early times) to BDF (late times) as the production continues. Despite different approaches/methods, the field case studies demonstrate that the accurate framework for strategic well planning including prediction of optimum well location is very critical, especially for the realization of the commercial benefit (i.e., increasing and accelerating of reserve or assets) from infilled drilling campaign. Also, the proposed framework and findings of this study provide new insight into infilled drilling campaigns including the importance of better evaluation of infill drilling performance in tight formations, which eventually assist on informed decisions process regarding future development plans.

Centros Ltd—A Complete U-Turn in the Right of Establishment for Companies?

2000 ◽  
Vol 49 (3) ◽  
pp. 621-642 ◽  
Author(s):  
Anne Looijestijn-Clearie
Keyword(s):  
United Kingdom ◽  
Member State ◽  
European Court Of Justice ◽  
The United Kingdom ◽  
Court Of Justice ◽  
European Court ◽  
Registered Office ◽  
Set Up ◽  
The Right ◽  
A Company

InCentros Ltd and Erhvers-og Selskabsstyrelesen (hereinafter Centros),1 the European Court of Justice ruled that it is contrary to Article 52 (now Article 432) and Article 58 (now Article 48) of the EC Treaty for the authorities of a member State (in casu Denmark) to refuse to register a branch of a company formed under the law of another member State (in casu the United Kingdom) in which it has its registered office, even if the company concerned has never conducted any business in the latter State and intends to carry out its entire business in the State in which the branch is to be set up. By avoiding the need to form a company there it would thus evade the application of the rules governing the provision for and the paying-up of a minimum share capital in force in that State. According to the Court, this does not, however, prevent the authorities of the member State in which the branch is to be set up from adopting appropriate measures for preventing or penalising fraud, either with regard to the company itself, if need be in co-operation with the member State in which it was formed, or with regard to its members, where it has been determined that they are in fact attempting, by means of the formation of a company, to evade their obligations towards creditors established in the territory of the member State of the branch.

scholarly journals Imaging the Subsurface: How Different Visualizations of Cross-sections Affect the Sense of Uncertainty

2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Ane Bang-Kittilsen ◽  
Terje Midtbø
Keyword(s):  
Cross Sections ◽  
Open Data ◽  
Question Mark ◽  
Reference Information ◽  
Geological Information ◽  
Crucial Information ◽  
Set Up ◽  
Web Experiment ◽  
The Right ◽  
Visualization Techniques

AbstractGeologists struggle to communicate the uncertainty that arise when mapping and interpreting the geological subsurface. Today, open data sharing policies make new value of geological information possible for a broader user group of non-experts. It is crucial to develop standard methods for visualizing uncertainty to increase the usability of geological information. In this study, a web experiment was set up to analyze whether and how different design choices influence the sense of uncertainty. Also, questions about the intuitiveness of symbols were asked. Two-hundred ten participants from different countries completed the experiment, both experts and non-experts in geology. Traditional visualization techniques in geology, like dashed lines, dotted lines and question mark, were tested. In addition, other visualizations were tested, such as hatched area and variations of symbol size, zoom levels and reference information. The results show that design choices have an impact on the participants’ assessment of uncertainty. The experts inquire about crucial information if it is not present. The results also suggest that when visualizing uncertainty, all the elements in the representation, and specifically the line and area symbols that delineate and colour the features, must work together to make the right impression.

The Method of Dynamic Reserves Prediction for a Constant Volume Gas Reservoir

2013 ◽  
Vol 275-277 ◽  
pp. 456-461
Author(s):  
Lei Zhang ◽  
Lai Bing Zhang ◽  
Bin Quan Jiang ◽  
Huan Liu
Keyword(s):  
Pressure Drop ◽  
Material Balance ◽  
Production Method ◽  
Gas Production ◽  
Constant Volume ◽  
Phase Method ◽  
Gas Reservoirs ◽  
Two Phase ◽  
Material Balance Method ◽  
Unit Pressure

The accurate prediction of the dynamic reserves of gas reservoirs is the important research content of the development of dynamic analysis of gas reservoirs. It is of great significance to the stable and safe production and the formulation of scientific and rational development programs of gas reservoirs. The production methods of dynamic reserves of gas reservoirs mainly include material balance method, unit pressure drop of gas production method and elastic two-phase method. To clarify the characteristics of these methods better, in this paper, we took two typeⅠwells of a constant volume gas reservoir as an example, the dynamic reserves of single well controlled were respectively calculated, and the results show that the order of the calculated volume of the dynamic reserves by using different methods is material balance method> unit pressure drop of gas production method >elastic two-phase method. Because the material balance method is a static method, unit pressure drop of gas production method and elastic two-phase method are dynamic methods, therefore, for typeⅠwells of constant volume gas reservoirs, when the gas wells reached the quasi-steady state, the elastic two-phase method is used to calculate the dynamic reserves, and when the gas wells didn’t reach the quasi-steady state, unit pressure drop of gas production method is used to calculate the dynamic reserves. The conclusion has some certain theoretical value for the prediction of dynamic reserves for constant volume gas reservoirs.

Constitutional Law in 1942–1943: The Constitutional Decisions of the Supreme Court of the United States in the October Term, 1942

1944 ◽  
Vol 38 (2) ◽  
pp. 266-288
Author(s):  
Robert E. Cushman
Keyword(s):  
United States ◽  
Supreme Court ◽  
West Coast ◽  
The United States ◽  
Japanese American ◽  
Circuit Court ◽  
Court Of Appeals ◽  
The Supreme Court ◽  
Set Up ◽  
The Right

On February 15, 1943, Wiley B. Rutledge, Jr., a judge of the United States Circuit Court of Appeals for the District of Columbia, took the seat on the Supreme Court vacated by the resignation in October, 1942, of Mr. Justice Byrnes. There were no other changes in the Court's personnel. Disagreement among the justices abated somewhat. In only a dozen cases of importance did either four or three justices dissent, as against some thirty cases in the last term. The Court overruled two earlier decisions, both recent; and the reversal in each case was made possible by the vote of Mr. Justice Rutledge.A. QUESTIONS OF NATIONAL POWER1. WAR POWER-CIVIL VERSUS MILITARY AUTHORITYWest Coast Curfew Applied to Japanese-American Citizens. In February, 1942, the President issued Executive Order No. 9066, which authorized the creation of military areas from which any or all persons might be excluded and with respect to which the right of persons to enter, remain in, or leave should be subject to such regulations as the military authorities might prescribe. On March 2, the entire West Coast to an average depth of forty miles was set up as Military Area No. 1 by the Commanding General in that area, and the intention was announced to evacuate from it persons of suspected loyalty, alien enemies, and all persons, aliens and citizens alike, of Japanese ancestry.

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