scholarly journals Importance of Natural Gas in Petroleum Mining and a New Oil Well Completion Method for More Efficient Utilization of Gas.

1951 ◽  
Vol 16 (4) ◽  
pp. 186-196
Author(s):  
Masami Sassa
Keyword(s):  
Natural Gas ◽  
Oil Well ◽  
Efficient Utilization ◽  
Well Completion

scholarly journals Comparison of dynamic tensile extrusion behaviour of WCu composites made by different processes

2018 ◽  
Vol 183 ◽  
pp. 03004
Author(s):  
Leeju Park ◽  
Sanghyun Woo ◽  
Yerim Lee ◽  
Keunho Lee ◽  
Young Sun Yi
Keyword(s):  
Composite Powder ◽  
Tungsten Powder ◽  
The Other ◽  
Metal Injection Molding ◽  
Oil Well ◽  
Well Completion ◽  
Extrusion Die ◽  
Steel Target ◽  
Copper Composite ◽  
Molding Methods

Composites with 60~90% of tungsten are used in liners of some specialty shaped charges. The penetration is enhanced by a factor against copper for homogeneous steel target. Tungsten powder based shaped charge liners are also especially suitable for oil well completion. In this study, WCu composites manufactured by different process are used for testing of dynamic tensile extrusion (DTE) behaviour. One samples were made by copper infiltrated method. The other samples were manufactured by metal injection molding methods with reduced tungsten copper composite powder. DTE tests were carried out by launching the sphere samples (Dia. 7.62mm) to the conical extrusion die at a speed of ~375m/s. The DTE fragmentation behaviour of tungsten copper composites after soft-recovered were examined and compared with each other.

Well Completion for Effective Deliquification of Natural Gas Wells

2011 ◽  
Vol 134 (1) ◽  
Author(s):  
John Yilin Wang
Keyword(s):  
Natural Gas ◽  
Operating Cost ◽  
Gas Production ◽  
Gas Wells ◽  
Liquid Loading ◽  
Gas Recovery ◽  
Well Completion ◽  
Reservoir Permeability ◽  
Gas Fields ◽  
Gas Lift

Liquid loading has been a problem in natural gas wells for several decades. With gas fields becoming mature and gas production rates dropping below the critical rate, deliquification becomes more and more critical for continuous productivity and profitability of gas wells. Current methods for solving liquid loading in the wellbore include plunger lift, velocity string, surfactant, foam, well cycling, pumps, compression, swabbing, and gas lift. All these methods are to optimize the lifting of liquid up to surface, which increases the operating cost, onshore, and offshore. However, the near-wellbore liquid loading is critical but not well understood. Through numerical reservoir simulation studies, effect of liquid loading on gas productivity and recovery has been quantified in two aspects: backup pressure and near-wellbore liquid blocking by considering variable reservoir permeability, reservoir pressure, formation thickness, liquid production rate, and geology. Based on the new knowledge, we have developed well completion methods for effective deliquifications. These lead to better field operations and increased ultimate gas recovery.

scholarly journals Volatile organic compound emissions from the oil and natural gas industry in the Uintah Basin, Utah: oil and gas well pad emissions compared to ambient air composition

2014 ◽  
Vol 14 (20) ◽  
pp. 10977-10988 ◽  
Author(s):  
C. Warneke ◽  
F. Geiger ◽  
P. M. Edwards ◽  
W. Dube ◽  
G. Pétron ◽  
...  
Keyword(s):  
Natural Gas ◽  
Ambient Air ◽  
Point Sources ◽  
Oil Well ◽  
Mobile Laboratory ◽  
Gas Well ◽  
Mixing Ratios ◽  
Volatile Organic ◽  
Oil And Natural Gas ◽  
Uintah Basin

Abstract. Emissions of volatile organic compounds (VOCs) associated with oil and natural gas production in the Uintah Basin, Utah were measured at a ground site in Horse Pool and from a NOAA mobile laboratory with PTR-MS instruments. The VOC compositions in the vicinity of individual gas and oil wells and other point sources such as evaporation ponds, compressor stations and injection wells are compared to the measurements at Horse Pool. High mixing ratios of aromatics, alkanes, cycloalkanes and methanol were observed for extended periods of time and for short-term spikes caused by local point sources. The mixing ratios during the time the mobile laboratory spent on the well pads were averaged. High mixing ratios were found close to all point sources, but gas well pads with collection and dehydration on the well pad were clearly associated with higher mixing ratios than other wells. The comparison of the VOC composition of the emissions from the oil and natural gas well pads showed that gas well pads without dehydration on the well pad compared well with the majority of the data at Horse Pool, and that oil well pads compared well with the rest of the ground site data. Oil well pads on average emit heavier compounds than gas well pads. The mobile laboratory measurements confirm the results from an emissions inventory: the main VOC source categories from individual point sources are dehydrators, oil and condensate tank flashing and pneumatic devices and pumps. Raw natural gas is emitted from the pneumatic devices and pumps and heavier VOC mixes from the tank flashings.

Green Nanoparticle Oil Well Cement from Agro Waste Rice Husk Ash

2014 ◽  
Vol 974 ◽  
pp. 26-32
Author(s):  
N. Alias ◽  
M.M.M. Nawang ◽  
N.A. Ghazali ◽  
T.A.T. Mohd ◽  
S.F.A. Manaf ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Oil And Gas ◽  
Rice Husk Ash ◽  
Hydraulic Pressure ◽  
Oil Well ◽  
Potential Candidate ◽  
Well Completion ◽  
Oil Well Cement ◽  
Well Cement

Cement is an important part in oil and gas well completion. A high quality of cement is required to seal hydraulic pressure between casing and borehole formation. Cement additives were used to enhance the cement properties such as thickening time, compressive strength, porosity and permeability of the cement. Currently, the commercial additives were imported and the price is keep increasing year by year. Therefore, the researchers were continuously looking for potential additives such as nanoparticle to improve the cement properties. This paper presents the effect nanosilica on compressive strength and porosity of oil well cement type G. In this study, two type of nanosilica were used, synthesis nanosilica from rice husk ash (RHA) and commercial nanosilica. The synthesized nanosilica was characterized using fourier transform infrared spectroscopy (FTIR), X-ray flouresece (XRF) and Field Emission Scanning Electron Microscopy (FESEM). All the experiments were conducted using API standard procedures and specifications. Based on the results, compressive strength of cement slurries was improved from 2600 psi to 2800 psi for 8-hours curing, when the amount of nanosilica increased from 0 wt% to 1.5 wt%. Besides that, incorporation of nanosilica from RHA into cement formulation resulted in reduction of cement porosity up to 18 % pore volume. Overall, the results showed that the incorporation of nanosilica from RHA improved the oil well cement compressive strength and oil well cement porosity. In conclusion, green nanosilica from RHA can be a potential candidate to replace the commercial nanosilica to enhance the oil well cement properties as well as to prevent the migration of undesirable fluid which can lead to major blowout.

Efficient utilization of associated natural gas in a modular gas-to-liquids process: Technical and economic analysis

Fuel ◽  
2016 ◽  
Vol 176 ◽  
pp. 32-39 ◽  
Author(s):  
Chundong Zhang ◽  
Ki-Won Jun ◽  
Ruxing Gao ◽  
Geunjae Kwak ◽  
Seok Chang Kang
Keyword(s):  
Natural Gas ◽  
Economic Analysis ◽  
Efficient Utilization ◽  
Technical And Economic Analysis ◽  
Gas To Liquids

Environmental and Economic Significance and Feasibility Analysis of Tight Sand Gas Reservoir in China

2013 ◽  
Vol 734-737 ◽  
pp. 320-325
Author(s):  
Jian Guo Wang ◽  
Long Chen ◽  
Hai Jie Zhang ◽  
Tao Han
Keyword(s):  
Natural Gas ◽  
Rapid Development ◽  
Economic Feasibility ◽  
Coal Bed ◽  
Gas Reservoirs ◽  
Unconventional Gas ◽  
Well Completion ◽  
Economic Significance ◽  
The Rich ◽  
Tight Sand Gas

Currently, with a sharp increase in demand for natural gas and a strict energy supply circumstances, the development of tight sand gas becomes a pressing need for the rapid development of Chinas society and economy. At the end of 2010, the reserves and annual production of tight sand gas in China accounted for 39.2 percent and 24.6 percent of national natural gas, respectively, and the proportions are expected to increase. Compared with other unconventional gas such as shale gas and coal bed methane, the techniques of tight sand gas are relatively mature and development costs of it are relatively low. So tight sand gas should be considered in priority in the exploration and exploitation of unconventional gas in China. The total reserves of tight sand gas in China are 12 trillion cubic meters. Tight sand gas in China possesses the rich reserves and enormous potential to develop, which can ease the current shortage of energy. Besides, China has mastered a series of key techniques such as the well drilling and completion protection supporting technique; well completion and staged fracturing technique of horizontal well, which guarantees the technical feasibility of the development of tight sand gas reservoirs. From the perspective of market, social and environmental meaning, reserves, technique and economic feasibility, this paper presents a systematical analysis about the importance of developing tight sand gas in China.

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