Associated Annular Gas Utilization Methods

Rabaev, R.U.; Белозеров, В. В.; Molchanova, V. A.

doi:10.17122/ngdelo-2019-2-88-93

Cited by 2 publications

(3 citation statements)

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“…Numerous studies [6][7][8][9][10][11][12][13][14][15] have addressed the problem of finding technical solutions to reduce gas pressure in the annular space at various methods of well operation. A review Energies 2022, 15, 5045 2 of 13 in [16] illustrates tools to reduce the impact of gas on the operation of downhole sucker-rod pumps and their effectiveness under various operating conditions.…”

Section: Introductionmentioning

confidence: 99%

“…The authors of [11] show that depending on the geological and technical properties of wells, the growth pattern of the separated gas pressure in the annular space has been established, and the experimental dependence for calculating the time of gas pressure stabilization in the annular space upon getting the pressure equal to the pressure in a well's discharge manifold has been obtained. The work of [8] has revealed that the disposal period of annular gas has a significant dependence on water cut and gas-oil ratio.…”

Section: Introductionmentioning

confidence: 99%

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The Rod String Loads Variation during Short-Term Annular Gas Extraction

Artyukhov

Isaev²,

Дроздов

et al. 2022

Energies

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This paper highlights field studies to determine the nature of variations in the load on the sucker-rod string during short-term gas extraction from the wellbore annulus. The results of step-by-step gas extraction from the annular spaces of the wells of fields developed by PJSC TATNEFT are provided. In the course of investigations, we have obtained both the trends of maximum and minimum loads on the polished rod during annular gas extraction, and the dependence of maximum load increment on the rod string with respect to pump size and pressure variation in the annular space. The analysis of the research data resulted in the elaboration of guidelines for short-term extraction of annular gas from wells operated by the PCP units.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Rod String Loads Variation during Short-Term Annular Gas Extraction

Artyukhov

Isaev²,

Дроздов

et al. 2022

Energies

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“…Additionally, the promising method of associated gas utilization is using jet pumps for its capturing. The potential energy of the associated oil gas, when properly used, can serve to raise the production fluid to the surface [11][12][13][14]. Due to the gas adding to the water-oil mixture of the well, it is possible to reduce the fluids density to such level that it will even reduce the minimum required outlet pressure of the sucker-rod pump, which is used for oil well operation [15,16].…”

Section: Introductionmentioning

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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Associated Annular Gas Utilization Methods

Cited by 2 publications

References 1 publication

The Rod String Loads Variation during Short-Term Annular Gas Extraction

The Rod String Loads Variation during Short-Term Annular Gas Extraction

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

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