Parameters of unsteady movement of injected fluid in tubing string during operation of pulsing devices

Based on the analysis of the existing material on pumping liquids with pressure pulses into the borehole we suggest to consider wellhead injection. The processes of the pressure pulse propagation in the pumped liquid by using wellhead pulsers. Based on the mathematical expressions graphs of the pressure values of the borehole depth and radius sweep circuit are constructed. According to the results recommendations are given on the development of optimal wellhead pulser designs.

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Investigation of the Mechanism of the Pressure Waves Distribution in the Injected Fluid Fromthe Wellhead to the Bottom Hole

Habibullin

Suleymanov

Galimullin

et al. 2017

Oil and Gas Studies

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Increasing of Efficiency of Single-Time Hydroimpulse Processings of Bottomhole Zone of Injection Wells

Habibullin

Suleymanov

Filimonov

2017

Oil and Gas Studies

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A mathematical expression is obtained to determine the number of repairs and hydroimpulse processings that must be performed in each of the M injection wells of the oil field so that the total water injection is maximum. The results of the calculations to determine the total water injection into the reservoir made it possible to graphically study boundaries and limits of the selection of the optimal conditions (areas) of single-time hydroimpulse processings. Usage of single-time hydroimpulse processings with the express method allowed to significantly reduce material costs and maintain a stable level of injection and a selection factor, which enabled only 16 processings to obtain savings.

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Downhole Universal Device for Pulsedstationary Pumping of Fluids Into the Well

Habibullin

Suleymanov

Galimullin

et al. 2018

Oil and Gas Studies

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The article deals with a downhole universal device for pulsed stationary pumping of fluids into the well. The versatility of this device is concluded in the ability to create a high-frequency vibra-tions in case of an injection well injectivity decline due to use of an additional element. On the basis of mathematical expressions and taking into account the simulation the authors determine the main parameters of the device. In developed laboratory bench tests experimental design was carried out taking into account the modeling of downhole conditions. When comparing the theoretical and laboratory results, the error was no more than ± 11,7 %. According to the results of bench tests the optimal size of the device for effective action at a pulsed stationary pumping of fluids into the well was determined.

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Parameters of unsteady movement of injected fluid in tubing string during operation of pulsing devices

Cited by 6 publications

References 1 publication

Investigation of the Mechanism of the Pressure Waves Distribution in the Injected Fluid Fromthe Wellhead to the Bottom Hole

Investigation of the Mechanism of the Pressure Waves Distribution in the Injected Fluid Fromthe Wellhead to the Bottom Hole

Increasing of Efficiency of Single-Time Hydroimpulse Processings of Bottomhole Zone of Injection Wells

Downhole Universal Device for Pulsedstationary Pumping of Fluids Into the Well

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