Experimental Studies and Analysis of Gas-Jet Device's Operation Characteristics for Oil and Gas Production in Abnormal Operating Conditions

Fedorov, A. Yu.; Verbitsky, V.S.; Goridko, Kirill

doi:10.2118/181956-ms

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…After this technology showed its effectiveness, such oil-gas jet pumps were proposed to be used together with sucker-rod pumps [27] or individually in complicated production conditions [28,29]. It should be noted here that a sucker rod string could be subjected to abnormal static and dynamic loads [30][31][32] especially for complex profile wells.…”

Section: State Of the Current Development Of The Problem And Formulating A Research Taskmentioning

confidence: 99%

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

et al. 2021

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During oil fields operation, gas is extracted along with oil. In this article it is suggested to use jet pumps for utilization of the associated oil gas, burning of which causes environmental degradation and poses a potential threat to the human body. In order to determine the possibility of simultaneous application of a sucker-rod pump, which is driven by a rocking machine, and a jet pump (ejector) in the oil well, it is necessary to estimate the distribution of pressure along the borehole from the bottomhole to the mouth for two cases: when the well is operated only be the sucker-rod pump and while additional installation of the oil-gas jet pump above its dynamic level. For this purpose, commonly known methods of Poettman-Carpenter and Baksendel were used. In addition, the equations of high-pressure and low-pressure oil-gas jet pumps were obtained for the case, when the working stream of the jet pump is a gas-oil production mixture and the injected stream is a gas from the annulus of the well. The values which are included in the resulting equations are interrelated and can only be found in a certain sequence. Therefore, a special methodology has been developed for the practical usage of these equations in order to calculate the working parameters of a jet pump based on the given independent working parameters of the oil well. Using this methodology, which was implemented in computer programs, many operating parameters were calculated both for the well and for the jet pump itself (pressures, densities of working, injected and mixed flows, flow velocities and other parameters in control sections). According to the results of calculations, graphs were built that indicate a number of regularities during the oil well operation with such a jet pump. The main result of the performed research is a recommendation list on the choice of the oil-gas jet pump location inside the selected oil well and generalization of the principles for choosing the perfect location of such ejectors for other wells. The novelty of the proposed study lays in a systematic approach to rod pump and our patented ejector pump operation in the oil and chrome plating of pump parts. The result of scientific research is a sound method of determining the rational location of the ejector in the oil well and the calculation of its geometry, which will provide a complete selection of petroleum gas released into the annulus of the oil well. To ensure reliable operation of jet and plunger pumps in oil wells, it is proposed to use reinforcement of parts (bushings, plungers, rods, etc.) by electrochemical chromium plating in a flowing electrolyte. This has significantly increased the wear resistance and corrosion resistance of the operational surfaces of these parts and, accordingly, the service life of the pumps. Such measures will contribute to oil production intensification from wells and improve the environmental condition of oil fields.

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Section: State Of the Current Development Of The Problem And Formulating A Research Taskmentioning

confidence: 99%

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

et al. 2021

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“…Intensification of gas influx to a well bottomhole is also practised while low-pressure gas ejecting by means of high pressure gas [21]. Low efficiency and gas temperature drop behind the ejector, resulting in hydrating, are disadvantages of the technique.…”

Section: Introductionmentioning

confidence: 99%

Improving the efficiency of production wells at the final stage of gas field development

Kondrat¹,

Matiishyn²

2022

Min. miner. depos.

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Purpose is to improve the efficiency of extraction of remaining hydrocarbons within the oil and gas fields at the final stage of their development while optimizing operational conditions of the production wells. Methods. Software package PipeSim by Schlumberger has been applied to improve the efficiency of the current well stock under the conditions complicated by liquid accumulation within a bottomhole. A hypothetic well has been used. Findings. The basic operational parameters of a production well have been calculated for different values of water coefficient (i.e. 50; 100; 150; 200; 250; 300; 350; 400 and 450 l/th.m3). The research has helped identify that increase in the water coefficient results in the increased rate of liquid as well as decreased gas rate. A nodal analysis method has been applied to identify the following: at the level of 450 l/th.m3, a production well stops flowing. The results of the studies support the idea that to activate a well efficiency at the level of 18 th.m3/day, it is required either to replace 62.0 tubing string with 50.3 mm one or reduce wellhead pressure from 10.16 down to 9.88 MPa or develop gas lift injection at the level of 1.9 th.m3/day. In addition, the results give the evidence of engineering efficiency as for the method implementation. However, expediency of the application depends upon the processing limits of industrial facilities as well as upon the ratio between the water-free and wet deposit areas. Originality. The correlation dependencies have been determined to forecast operational indices of highly watered wells. The research results help substantiate promptly the methods intensifying hydrocarbon output depending upon different types of geological and engineering limitations. Practical implications. Implementation of the results will help optimize operation of production wells under active edge and bottom water inflow into the productive pools and increase their hydrocarbon extraction respectively.

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Investigations of the Liquid-Jet Gas Pump’s Mixing Throat Lengths for Well Operations and Associated Petroleum Gas Utilization

Karabaev

2021

IOP Conf. Ser.: Earth Environ. Sci.

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One of the solutions of water-alternating gas injection technology and utilizing of associated petroleum gas enhancement is application of pump-ejector system technology, which uses a liquid-jet gas pump (LJGP) as a water and gas mixer. This paper is devoted to the test bench studies of the LJGP’s performance characteristics with change of the mixing throat’s length at excess pressures of the ejected gas. As a result of the bench studies, it was obtained that the excess pressures of the ejected gas Pin require a different approach when choosing the optimum length of the LJGP’s mixing throat, as compared to atmospheric pressure. So, it was determined that at Pin from 0.05 to 0.18 MPa, a long mixing chamber should be chosen, and Pin from 0.18 to 0.6 MPa, the optimal length is medium. It was also obtained that with an increase in Pin , the optimum working range of the mixing throat lengths increases, which makes it possible to select the mixing throat in wider ranges, without losing the efficiency of the LJGP. With the optimal length of the mixing throat, the highest gas injection coefficients were in the range of Pin = 0.2 – 0.5 MPa.

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Experimental Studies and Analysis of Gas-Jet Device's Operation Characteristics for Oil and Gas Production in Abnormal Operating Conditions

Cited by 4 publications

References 2 publications

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

Strategy of Compatible Use of Jet and Plunger Pump with Chrome Parts in Oil Well

Improving the efficiency of production wells at the final stage of gas field development

Investigations of the Liquid-Jet Gas Pump’s Mixing Throat Lengths for Well Operations and Associated Petroleum Gas Utilization

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