Influence of nanoadditives on mechanical and isolating properties of cement-based compositions

Mukhametshin, V.V.; Kadyrov, Ramzis Rakhimovich

doi:10.15828/2075-8545-2017-9-6-18-36

Cited by 12 publications

(13 citation statements)

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“…Dependency graph of root-mean-square value of drum vibration speed on shaft speed n with the spring stiffness s=750 N/m and different drum inertia moments Jd.These graphs show that when the shaft speed increases to 200…275 rot/min root-mean-square value of vibration speed increases (pictures3,4). At shaft speed 250-275 rot/min resonance appears.…”

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confidence: 89%

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Determining oscillating system dynamic parameters of a near-bit junk pulper

Zainagalina¹,

Gabdrakhimov²,

Сулейманов³

et al. 2018

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" (AIME 2018)

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Development of effective bottom hole cleaning equipment from junk is an effective way of enhancing productivity of drilling operations. The article describes the construction of the near-bit for enhancing bottom cleaning of vertical, slanting and horizontal wells from junk during drilling by a roller cutter. The description of a laboratory bench for a near-bit junk pulper is given. Experimental data of vibrodynamic properties of a near-bit sludge pulper oscillating system are represented in order to find the best parameters of the device elements. Laboratory tests showed that the amplitude of the drum oscillation depends on the shaft speed, spring force, and the drum inertia moment.

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confidence: 89%

“…But increasing mud density leads to well walls packing. It is known that the junk particles should be not bigger than 1-2 mm to be transported in suspended condition [1][2][3][4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Determining oscillating system dynamic parameters of a near-bit junk pulper

Zainagalina¹,

Gabdrakhimov²,

Сулейманов³

et al. 2018

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" (AIME 2018)

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“…Torsion vibrations of the system "screw -stem" cause early fatigue of screw surfaces and a rubber starter holder, fatigue rod breakage, tubing turn-away negatively influence the operation of the whole set in general. [1,2] According to the results of the research, for reliability enhancement of screw pump sets with the surface drive they should be utilized with drive rotation frequency, exceeding critical speed of rotation, taking into the account that it is not equal for all arrangements of screw pump sets and utilization conditions, and depends on utilization parameters and sets parameters [3][4][5].…”

Section: IImentioning

confidence: 99%

Utilization of expert systems for screw pump sets with surface drive management

Davydov¹

2018

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" (AIME 2018)

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Here we deal with the current utilization of screw pump sets with surface drive management. The causes of rod string twisting off are analyzed. We study the mathematical model of functioning of the system "the screw -the rod string, dependence of torque inequality on the length of the rod strings, rod diameter, screw length, screw diameter, screw tightness, pump pressure and others. Also, we suggest using the designed apparatus set with sensors and a controlling system based on powerful, freely programmed panel controller with Linux operational system, that is the complex with expert systems. The control is fulfilled by connecting all sensors and a frequency converter to the soft-based controller, set in the control box. Connecting the soft-based controller to the computer is done through the protocol Modbus TCP. It has the Scada software for controlling screw set drives with the surface drive.

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“…In case of emergency or any other stoppage and temperature lowering the process of convectional heat transfer takes place from the earth to the injection tree. Successful testing of the conventional heat interchangers has been done at the wells [10]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Technologies and technical devices for annual regulated flooding of a productive strata

Kadyrov¹,

Kuleshova²,

Фаттахов³

2018

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" (AIME 2018)

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Different systems of stratal flooding by mineral or fresh water into oil bearing formation are used today to enhance reservoir recovery. At low temperatures, 25 degrees below zero and lower, there is a great possibility of freezing of the well head equipment due to cyclic flooding or separate horizontal flooding, lessening injection capacity of the well, emergency stops in flooding, due to water pipe breakage or power cutting off. Besides the wells, crossover bends from water injection wells to the pipe header, and stagnation zones of the embedded in grooves pipes can freeze. According to expert estimation of PJSC "Tatneft" specialists, the amount of frozen injection stations is more than 500 wells per year. Due to the urgency of the issue technological measures have been developed to prevent oil-field equipment freezing.

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Influence of nanoadditives on mechanical and isolating properties of cement-based compositions

Cited by 12 publications

References 0 publications

Determining oscillating system dynamic parameters of a near-bit junk pulper

Determining oscillating system dynamic parameters of a near-bit junk pulper

Utilization of expert systems for screw pump sets with surface drive management

Technologies and technical devices for annual regulated flooding of a productive strata

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