The paper considers the process of hydrate-paraffin deposits formation in oil wells. Due to research with author's specially designed laboratory equipment – an experimental installation containing a technological unit and information-measuring system, most favorable pressure-temperature conditions hydrate wide range pressure (0.1–120 MPa) temperature (from –20 +80 °C) were determined. results m...

Abstract The corrosion performance of phase change materials on stainless steel was studied using single fatty acid, acid/paraffin mixed and acid/paraffin/graphite composite as media. results show that the paraffin graphite to is very small; among them, stearic acid series are least corrosive can be used ideal energy storage medium for heat exchange devices.

The formation of wax deposits is a common phenomenon in the production and transportation fluids. On territory Perm Krai, this problem occurs half mining funds. One most promising methods dealing with these use inhibitor regents. popular technique for assessing effectiveness «Cold Finger», which has number significant drawbacks. This work presents inhibition paraffin on laboratory installation ...

Abstract The gas lift method is an artificial of well production using the energy compressed injected into to reservoir fluid surface. formation paraffin deposits has remained one critical oil problems due growing percentage hard-to-recover reserves in overall structure. This complication also typical for many and fields Vietnam, such as White Tiger, Bear, Dragon fields. Wax deposit negatively ...

PAGE Introduction 209 Construction of the spraying tower ... ... ... ... ... ... 210 Adjustment of the atomiser ... ... ... ... ... ... ... 211 Spraying procedure ... ... ... ... ... ... ... ... ... 211 Determination of weight of deposit ... ... ... ... ... ... 212 Replication and distribution of deposits ... ... ... ... ... ... 213 Factors governing the weight of deposit ... ... ... ... ... .....

A radiocarbon date of 19 100 ±100 yr BP (SUA 2856) dates the maximum extent ofglacier ice at Lake Beatrice in the upper Dante IJ ,,,,,,I,,>r 1'1 •• ... nrlrrh", Late Wisconsin in western Tasmania. Study ofthe Dante Glacier outwash fan deposits shows that rna'l:'Or'\'vlT(~'r"hr',e'; a lDalaec~soJ and an older outwash formation, and are interstratified with fluvial silts detritus deposited of the...

Mapping in the Homs region of Syria has revealed a hitherto unrecognized staircase of at least 12 gravel terraces of the upper Orontes River. The terrace gravels overlie Pliocene lacustrine marl and have been calcareously cemented into conglomerates, sometimes interbedded with cemented fine-grained alluvium. A tentative dating scheme, based on modelling the regional-scale surface uplift that ha...

This paper argues that banks must be sufficiently levered to have first-best incentives to make new risky loans. This result, which is at odds with the notion that leverage invariably leads to excessive risk taking, derives from two key premises that focus squarely on the role of banks as informed lenders. First, banks finance projects that they do not own, which implies that they cannot extrac...