Wyniki wyszukiwania - BazTech

1

En-route mechanical activation of viscous oil and oil products transported in railroad tank cars

Myrzakhmetov Y., Sładkowski A.

Transport Problems

|

2012

|

T. 7, z. 3

87-93

EN

The authors of this document are aiming to substantiate the advantages of en-route mechanical activation technology as aids for railroad transportation of viscous oil and oil products in tank cars. The conceptual design implies the use of momentum generated by brake action. This document also contains preliminary data of laboratory research confirming the validity of the developed concept.

2

Effect of Exit Blade Angle, Viscosity and Roughness in Centrifugal Pumps Investigated by CFD Computation

Li W.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

|

2011

|

Vol. 15, No 1

21-41

EN

It has long been known that the exit blade angle plays a very important role in the performance of a centrifugal pump handling water or viscous oil. The effect of exit blade angle on the performance and flow of centrifugal pumps is usually investigated experimentally. However, due to the high cost and limited data that can be obtained by experiment, currently there is a great need for this effect to be studied numerically by means of computational fluid dynamics (CFD). At present, extensive comparisons between experiment and simulation regarding the performance of viscous oil and flow in centrifugal pumps with different exit blade angles are not available. Hydraulic performance and flow details in the impeller and the volute of a centrifugal pump with an exit blade angle of 44o were investigated numerically with the CFD code Fluent, using water and viscous oil as the working fluid, respectively. The effect of exit blade angle was then elucidated by comparing the performance and flow with that of a pump with an exit blade angle of 20o. It was determined that the results for the performance and flow obtained by means of CFD were in qualitative agreement with the observations. The sudden-rising-head effect is dependent on roughness and viscosity. The unstable zone in the theoretical head curve of the impeller at a low flow rate was attributed to the strong reaction of the volute to the flow in the vicinity of the impeller exit. The flow in the impeller with a large exit blade angle was subject to separation near the blade pressure side, however, a large exit blade angle helped improve the pump performance of viscous oil.

3

Soversenstvovanie tehnologii skvazinnogo uprugogo vozdeistvia na produktirnye plasty

Maksutin A. V.

Wiertnictwo, Nafta, Gaz

|

2008

|

T. 25, z. 2

511-515

PL

Wydobycie ropy z większości złóż w ostatnich latach napotyka na szereg problemów. Ważną rolę odgrywa dobór odpowiedniej metody jej wydobycia, umożliwiającej zwiększenie współczynnika sczerpania złoża oraz równoczesne zwiększenie zasięgu eksploatacji. W artykule autor przeanalizował najbardziej rozpowszechnione obecnie metody intensyfikacji wydobycia. Najlepsze efekty dają metody wykorzystujące oddziaływanie fal: elektromagnetycznych, wibroakustycznych czy impulsywnych. W dalszej części autor opisuje działanie stworzonego w Instytucie Górniczym w Sankt-Petersburgu urządzenia "Pritok IM", który wykorzystuje oddziaływanie rezonansu na złoże.

EN

Comparative analysis of the basic technologies and methods of influence on reservoirs was leaded for stimulation of production and increases of oil formations recovery on a late development stage. The application of considered technologies was studied oil field with hard recoverable oil in strongly mudded terrigenous and carbonate reservoirs with low porosity and perwcability. Efficiency and ecological safety of technologies was considered. The report considers the technology of borehole influence on productive layers by elastic impulses at resonance frequencies for stimulation of oil-and-gas wells and deposits for reservoir recovery increase. It also describes the physical principle, the method and equipment for stimulation oil-and-gas wells and deposits by this technology. The report also gives the result of successful use of the equipment "Pritok-1M" at deposits with various geological and technological conditions of different regions in Russia and China. Now researcher are conducted an opportunity of use this technology together with application of solvents, injection of compounds, thermal methods for carrying out of well treatments on oil fields with viscous oil and bitumens.