Results 231 to 240 of about 71,707 (286)

Modeling and simulation of amplified spontaneous emission in single-mode-pumped Cr²⁺:ZnSe bulk amplifiers with beam propagation and equivalent input-noise seeding. [PDF]

Appl Phys B
Nilsson J.
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Integrated high-fidelity preparation and analysis of photonic two-qubit states for quantum network nodes. [PDF]

Sci Rep
Zatsch JCJ, Engling T, Huster J, Hohmann LL, Kumar S, Barz S.   +5 more
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Walking Beam Pumping Unit System Efficiency Measurements

SPE Annual Technical Conference and Exhibition, 1991
ABSTRACT The cost of electricity used by walking beam pumping units is a major expense in producing crude oil. However, only very limited information is available on the efficiency of beam pumping systems and less is known about the efficiency of the various components of the pumping unit. This paper presents and discusses
J. J. Kilgore, H. A. Tripp, C. L. Hunt
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Research of Non-Stop Intermittent Pumping Production for Beam Pumping Units

SPE Asia Pacific Oil and Gas Conference and Exhibition, 2018
Abstract A new technology of the non-stop intermittent pumping production for beam pumping units has been widely used in PetroChina Daqing oil field. This technology solves the problems that existed in conventional intermittent pumping production, such as a large fluctuation in fluid level, a long idle time, high labor intensity, frozen ...
Hongliang Gong, Yanan Sun, Shujin Zhang, Xing Qi, Guochen Shi, Chunlong Sun, Guoqing Wang, Deshi Zhang, Feng Wei, Hou Yu, Changrui Qing, Guoxing Zheng, Yulong Zhao, Yang Gao   +13 more
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Design of Beam Pumping Unit Balancing Adjustment Device

Advanced Materials Research, 2012
In China, Three oil companies use all sorts of beam pumping units, but the operation of balancing adjustment is labor-intensive, low efficiency and adjustment accuracy in general. Many engineers try to improve these, so they design various kinds of devices to adjust the balance of pumping units, however, the intelligent level of most balance devices is
Qin Wu, Xi Xie, Wei Shen
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Mobile Pumping Units for Particle Free Beam Vacuum

2023
For 10 years our Institute CEA Saclay Irfu has been involved in several in-kind collaboration contracts with ESS at Lund (Sweden) and one of these includes the test of numerous cryomodules in a dedicated test bench designed at Saclay. The cryomodules start to be assembled cavity per cavity in a clean room and must be low pressure pumped, without adding
Joannem, Tom, Berry, Stéphane, Bertrand, Quentin, Boulch, Cyril, Monnereau, Gilles   +4 more
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The design and simulation of beam pumping unit

2015 21st International Conference on Automation and Computing (ICAC), 2015
Based on beam pumping unit, an new method of design beam hanger to dynamic loading and simulation in ADAMS software is presented, and beam pumping unit's structure and working principle are introduced in this paper first. Secondly, using the development function of macro command in ADAMS software, combining with the connect method of bushing and ...
Sun Wenlei, Cao Li, Qing Tao, Tan Yuanhua   +3 more
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Design Research on Working Mechanism of Beam Pumping Unit

Applied Mechanics and Materials, 2010
Based on the unique geometry and mechanical movement of beam pumping unit, this paper presented a simple swing equation and computed motorial parameter, meanwhile under the conditions of the static load and inertial load of the polished-rod of a conventional pumping unit, it also presented an equivalent dynamic model of the pumping unit system and the ...
Jun Liu, Jiang Zhu
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Simulation research on hydraulic hybrid assistant beam pumping unit

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2015
Conventional beam pumping units have occupied an important position in oilfield equipment due to such characteristics as simple structure, high reliability, simple operation, easy maintenance, and so on. In fact, there are about 90,000 sets of beam pumping units in China.
Yijie Liang, Tongjian Wang, Xin Wang, Weiquan Liang, Xinhui Liu   +4 more
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An Explicit Analysis Method for Walking-Beam Oil Pumping Unit

Applied Mechanics and Materials, 2010
Based on the theory of linear transformation and vector operations, an explicit analysis method is proposed for walking-beam oil pumping unit, which overcomes the difficulties of traditional method: roots discriminating of quadratic equations method and angle quadrant discriminating trigonometric functions method.
Xian Yue Gang, Cui Hua He, Shu Feng Wang, Yue Han   +3 more
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