scholarly journals Hydrocarbon Accounting Verification for Reasonable Assurance on EJGP Open Access Pipe System

2019 ◽  
Vol 2 (2) ◽  
Author(s):  
Mildo Hasoloan Nainggolan ◽  
I Putu Suarsana ◽  
Suryo Prakoso
Keyword(s):  
Open Access ◽  
Natural Gas ◽  
Piping System ◽  
Network System ◽  
Pipeline Network ◽  
Pipe System ◽  
Average System ◽  
History Of ◽  
Set Up ◽  
Flow Quantity

<p>The East Java Gas Pipeline (EJGP) pipeline network system is an open access for transporting almost ± 310 MMSCFD of Natural Gas from fields in East Java offshore to the onshore Power Plant consumers. The deviation between the calculated and mass balance of gas stock is called the Discrepancy in which BPHMIGAS set up a maximum value of ± 0.85%. The objective of the study is to develop a verification methodology to support hydrocarbon accounting in the EJGP Pipeline Network System. The methodology will be assisted by Flow Quantity Assurance software. After obtaining sufficient data, a new baseline can be taken empirically which can be used as a reference for the maximum allowable discrepancy in the EJGP Pipeline Network System. The data used in this simulation are taken from September - October 2013 such as pipes dimension of the entire network piping system, flowrate, pressure, temperature, and the composition of natural gas. The results of verification are compared with the calculations carried out by Pertamina Gas as operators. The calculation of Discrepancy from the Operators with different tools is around 0.12%, meaning that operator calculations are acceptable. The maximum <br />allowable discrepancy ± 0.85%, can be reviewed to be reduced according to the history of the average system discrepancy in 2017-2018 (around 0.54%). The New Shipper from Sirasun Batur Field is still more economics by using the existing pipeline network even though it bears Discrepancy / Losses up to 1% compared to building new pipes to consumers. It is found that the discrepancy is getting smaller (reducing the error) if there is a gas balance, meaning that the end consumers will take the gas according to the agreed nomination.</p>

scholarly journals Computer-Aided Simulation Model for Natural Gas Pipeline Network System Operations

2004 ◽  
Vol 43 (4) ◽  
pp. 990-1002 ◽  
Author(s):  
Panote Nimmanonda ◽  
Varanon Uraikul ◽  
Christine W. Chan ◽  
Paitoon Tontiwachwuthikul
Keyword(s):  
Natural Gas ◽  
Simulation Model ◽  
Gas Pipeline ◽  
Network System ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Computer Aided

A Methodology to Assess the Gas Supply Capacity and Gas Supply Reliability of a Natural Gas Pipeline Network System

2018 ◽  
Author(s):  
Weichao Yu ◽  
Kai Wen ◽  
Yichen Li ◽  
Weihe Huang ◽  
Jing Gong
Keyword(s):  
Natural Gas ◽  
Transition Process ◽  
Gas Pipeline ◽  
Network System ◽  
Market Demand ◽  
Pipeline Network ◽  
Natural Gas Pipeline ◽  
Supply Capacity ◽  
Gas Supply ◽  
Supply Reliability

Natural gas pipeline network system is a critical infrastructure connecting gas resource and market, which is composed with the transmission pipeline system, underground gas storage (UGS) and liquefied natural gas (LNG) terminal demand. A methodology to assess the gas supply capacity and gas supply reliability of a natural gas pipeline network system is developed in this paper. Due to random failure and maintenance action of the components in the pipeline network system, the system can be in a number of operating states. The methodology is able to simulate the state transition process and the duration of each operating state based on a Monte Carlo approach. After the system transits to other states, the actual flow rate will change accordingly. The hydraulic analysis, which includes thermal-hydraulic simulation and maximum flow algorithm, is applied to analyze the change law of the actual flow rate. By combining the hydraulic analysis into the simulation of the state transition process, gas supply capacity of the pipeline network system is quantified. Furthermore, considering the uncertainty of market demand, the load duration curve (LDC) method is employed to predict the amount of demand for each consumer node. The gas supply reliability is then calculated by comparing the gas supply capacity with market demand. Finally, a detailed procedure for gas supply capacity and gas supply reliability assessment of a natural gas pipeline network system is presented, and its feasibility is confirmed with a case study. In the case study, the impact of market demand uncertainty on gas supply reliability is investigated in detail.

scholarly journals Becoming Editor: Or, Pinocchio finally notices the Strings

2013 ◽  
Vol 11 (2) ◽  
pp. 461-474 ◽  
Author(s):  
Martin Parker
Keyword(s):  
Open Access ◽  
Knowledge Production ◽  
Journal Editor ◽  
Academic Journal ◽  
Open Access Journals ◽  
The Social ◽  
History Of ◽  
Set Up ◽  
The Relationship ◽  
Forms Of Knowledge

This paper uses my experience as an academic journal editor in order to reflect upon the social arrangement that brings academics, universities, states and knowledge capitalist organizations together to produce the contemporary academic journal and access paywalls. After some consideration of the history of publishing, I analyse the market for articles like this one, and considerthe consequences of the ranking and monetization of journals, papers andcitations by different agents. As I do this, I insert various biographical reflections on the relationship between ‘editing’ and being ‘edited’. The overall aim of the paper is to suggest that this set-up actually has some verynegative consequences for taxpayers, academics and students. It encourages the overproduction of academic output because it turns it into a commodity which is traded, whilst simultaneously tending to discourage forms of knowledge production that fail to fit into the boxes which have already been establishedfor them, whether in terms of content or style. I conclude with some thoughts on open access journals, and their limits.

scholarly journals Becoming Editor: Or, Pinocchio finally notices the Strings

2013 ◽  
Vol 11 (2) ◽  
pp. 461-474
Author(s):  
Martin Parker
Keyword(s):  
Open Access ◽  
Knowledge Production ◽  
Journal Editor ◽  
Academic Journal ◽  
Open Access Journals ◽  
The Social ◽  
History Of ◽  
Set Up ◽  
The Relationship ◽  
Forms Of Knowledge

This paper uses my experience as an academic journal editor in order to reflect upon the social arrangement that brings academics, universities, states and knowledge capitalist organizations together to produce the contemporary academic journal and access paywalls. After some consideration of the history of publishing, I analyse the market for articles like this one, and considerthe consequences of the ranking and monetization of journals, papers andcitations by different agents. As I do this, I insert various biographical reflections on the relationship between ‘editing’ and being ‘edited’. The overall aim of the paper is to suggest that this set-up actually has some verynegative consequences for taxpayers, academics and students. It encourages the overproduction of academic output because it turns it into a commodity which is traded, whilst simultaneously tending to discourage forms of knowledge production that fail to fit into the boxes which have already been establishedfor them, whether in terms of content or style. I conclude with some thoughts on open access journals, and their limits.

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