Methane Emissions in China's Oil and Gas Production: Impacts and Control Measures

2019 ◽  
Author(s):  
Yibin Weng ◽  
Ming Xue ◽  
Xiangyu Cui ◽  
Xingchun Li
2019 ◽  
Author(s):  
Yibin Weng ◽  
Ming Xue ◽  
Xiangyu Cui ◽  
Xingchun Li

2016 ◽  
Vol 2 (1) ◽  
pp. 20
Author(s):  
Lili Yan

<p><em>With the increase of development the well integ</em><em>c</em><em>rity</em><em> </em><em>problem are becoming more and more serious. This article uses the </em><em>F</em><em>ault </em><em>T</em><em>ree </em><em>A</em><em>nalysis (FTA) method for many factors, such as completion, production and operation process, pressure annulus, the cementing quality, the wellhead system and leakage of pipe string.</em><em> </em><em>Many wellbore risk factors to conduct a comprehensive analysis and evaluation. Through the qualitative analysis of wellbore integrity failure risk, determining the level of risk factors and establishing the damage analysis model of the wellbore. According to the selected blocks in Shengli Oilfield example analysis of single wells find out the minimum cut sets, the minimum path sets and structure importance. The results showed that the selected block probability of top event is calculated and it’s 0.9961, and the actual selection conforms to statistics prove that the proposed based on the FTA wellbore damage risk analysis method is feasible, and through quantitative analysis and calculation of basic events of different important degree of parameters.</em></p><p><em>According to these risk factors for prevention of failure risk control measures are put forward, which provides reference for predict wellbore integrity to ensure the safety of oil and gas production run smoothly.</em></p>


2018 ◽  
Vol 52 (19) ◽  
pp. 11206-11214 ◽  
Author(s):  
Pablo E. Saide ◽  
Daniel F. Steinhoff ◽  
Branko Kosovic ◽  
Jeffrey Weil ◽  
Nicole Downey ◽  
...  

2018 ◽  
Vol 18 (9) ◽  
pp. 6483-6491 ◽  
Author(s):  
Jian-Xiong Sheng ◽  
Daniel J. Jacob ◽  
Alexander J. Turner ◽  
Joannes D. Maasakkers ◽  
Melissa P. Sulprizio ◽  
...  

Abstract. We use observations of boundary layer methane from the SEAC4RS aircraft campaign over the Southeast US in August–September 2013 to estimate methane emissions in that region through an inverse analysis with up to 0.25∘×0.3125∘ (25×25 km2) resolution and with full error characterization. The Southeast US is a major source region for methane including large contributions from oil and gas production and wetlands. Our inversion uses state-of-the-art emission inventories as prior estimates, including a gridded version of the anthropogenic EPA Greenhouse Gas Inventory and the mean of the WetCHARTs ensemble for wetlands. Inversion results are independently verified by comparison with surface (NOAA∕ESRL) and column (TCCON) methane observations. Our posterior estimates for the Southeast US are 12.8±0.9 Tg a−1 for anthropogenic sources (no significant change from the gridded EPA inventory) and 9.4±0.8 Tg a−1 for wetlands (27 % decrease from the mean in the WetCHARTs ensemble). The largest source of error in the WetCHARTs wetlands ensemble is the land cover map specification of wetland areal extent. Our results support the accuracy of the EPA anthropogenic inventory on a regional scale but there are significant local discrepancies for oil and gas production fields, suggesting that emission factors are more variable than assumed in the EPA inventory.


2016 ◽  
Vol 50 (5) ◽  
pp. 2487-2497 ◽  
Author(s):  
John. D. Albertson ◽  
Tierney Harvey ◽  
Greg Foderaro ◽  
Pingping Zhu ◽  
Xiaochi Zhou ◽  
...  

2019 ◽  
Vol 124 ◽  
pp. 05031 ◽  
Author(s):  
A.M. Sagdatullin

Currently, there is a need to improve the systems and control of pumping equipment in the oil and gas production and oil and gas transport industries. Therefore, an adaptive neural network control system for an electric drive of a production well was developed. The task of expanding the functional capabilities of asynchronous electric motors control of the oil and gas production system using the methods of neural networks is solved. We have developed software modules of the well drive control system based on the neural network, an identification system, and a scheme to adapt the control processes to changing load parameters, that is, to dynamic load, to implement the entire system for real-time control of the highspeed process. In this paper, based on a model of an identification block that includes a multilayered neural network of direct propagation, the control of the well system was implemented. The neural network of the proposed system was trained on the basis of the error back-propagation algorithm, and the identification unit works as a forecaster of system operation modes based on the error prediction. In the initial stage of the model adaptation, some fluctuations of the torque are observed at the output of the neural network, which is associated with new operating conditions and underestimated level of learning. However, the identification object and control system is able to maintain an error at minimum values and adapt the control system to a new conditions, which confirms the reliability of the proposed scheme.


2021 ◽  
Author(s):  
Maureen Lackner ◽  
Jonathan Camuzeaux ◽  
Suzi Kerr ◽  
Kristina Mohlin

2020 ◽  
Author(s):  
Daniel Zavala-Araiza ◽  
Mark Omara ◽  
Ritesh Gautam ◽  
Mackenzie Smith ◽  
Stephen Conley ◽  
...  

&lt;p&gt;A wide body of research has characterized methane emissions from the oil and gas supply chain in the US, with recent efforts gaining traction in Canada and Europe. In contrast, empirical data is limited for other significant oil and gas producing regions across the global south. Consequently, measuring and characterizing methane emissions across global oil and gas operations is crucial to the design of effective mitigation strategies.&lt;/p&gt;&lt;p&gt;Several countries have announced pledges to reduce methane emissions from this sector (e.g., North America, Climate and Clean Air Coalition [CCAC] ministers). In the case of Mexico, the federal government recently published regulations supporting a 40-45% reduction of methane emissions from oil and gas. For these regulations to be effective, it is critical to understand the current methane emission patterns.&lt;/p&gt;&lt;p&gt;We present results from multi-scale empirical estimates of methane emissions from Mexico&amp;#8217;s major oil and gas production regions (both offshore and onshore), based on a set of airborne-based measurement campaigns, analysis of satellite data (TROPOMI), and development of spatially explicit inventories. Our results provide a revised estimate of total emissions in the sampled regions and highlight the importance of empirically based characterization as a basis for prioritization in terms of emission reduction opportunities.&lt;/p&gt;&lt;p&gt;Finally, we highlight how these measurements &amp;#8211;as well as similar policy-relevant studies- connect into action, based on the current needs from relevant stakeholders (e.g., inventory builders, regulators and industry).&lt;/p&gt;


2014 ◽  
Vol 48 (24) ◽  
pp. 14508-14515 ◽  
Author(s):  
Halley L. Brantley ◽  
Eben D. Thoma ◽  
William C. Squier ◽  
Birnur B. Guven ◽  
David Lyon

Author(s):  
Erin E. Tullos ◽  
Shannon N. Stokes ◽  
Felipe J. Cardoso-Saldaña ◽  
Scott C. Herndon ◽  
Brendan J. Smith ◽  
...  

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