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Medvedev
Oleg Medvedev, Novosibirsk RU
| Patent application number | Description | Published |
|---|---|---|
| 20110083849 | HETEROGENEOUS PROPPANT PLACEMENT IN A FRACTURE WITH REMOVABLE CHANNELANT FILL - A method of heterogeneous proppant placement in a subterranean fracture is disclosed. The method comprises injecting a first treatment fluid comprising a gas and substantially free of macroscopic particles through a wellbore to initiate a fracture in a subterranean formation; injecting a second treatment fluid comprising proppant and channelant through the wellbore into the fracture; placing the proppant in the fracture in a plurality of proppant clusters forming pillars spaced apart by the channelant; and removing the channelant to form open channels around the pillars for fluid flow from the subterranean formation through the fracture toward the wellbore. | 04-14-2011 |
Oleg Olegovich Medvedev, Odessa UA
| Patent application number | Description | Published |
|---|---|---|
| 20100282464 | METHOD OF PROPPING AGENT DELIVERY TO THE WELL - This invention relates to the production of minerals, more specifically, to the production of hydrocarbons, by hydraulic fracturing of the rock, and can be used for the optimization of formation fracturing crack processing conditions. Under this invention, the main stream of the propping agent suspension in the fluid at the mixer output is split into at least two flows having different volume delivery rates, and before the delivery to the hydraulic fracturing zone said flows are comingled. | 11-11-2010 |
| 20110036571 | PERFORATION STRATEGY FOR HETEROGENEOUS PROPPANT PLACEMENT IN HYDRAULIC FRACTURING - Hydraulic fracturing an individual reservoir fracturing layer of a subterranean formation to produce heterogeneous proppant placement is given in which pillars of proppant are placed such that the pillars do not extend the entire height of the fracture (for a vertical fracture) but are themselves interrupted by channels so that the channels between the pillars form pathways that lead to the wellbore. The method combines methods of introducing slugs of proppant-carrying and proppant-free fluids through multiple clusters of perforations within a single fracturing layer of rock, with methods of ensuring that the slugs exiting the individual clusters do not merge. | 02-17-2011 |
Viktor A. Medvedev, St. Petersburg RU
| Patent application number | Description | Published |
|---|---|---|
| 20110005442 | ARCTIC HEAVY-TONNAGE CARRIER AND ICE-RESISTANT PYLON FOR CONNECTING THE SHIP UNDERWATER AND ABOVE-WATER BODIES - The invention applies to shipbuilding dealing with the construction of Arctic heavy-tonnage carriers. The Arctic heavy-tonnage carrier comprises an underwater cargo hull and above-water body in the form of the main deck with a superstructure. The underwater hull is connected to the main deck with an ice-resistant pylon along which the ship load waterline passes and which is located in the fore body of the underwater hull directly behind the forepeak symmetrically related to the center plane of the ship hull. The upper deck of the underwater ship hull has in the area of the pylon a strengthened construction. The pylon structure is a bearing one for the main deck. The underwater hull can be made in the cross-sectional view to the shape of a round-angled rectangle the height of which is 10-12 m and a height-breadth ratio does not exceed 1:6. The underwater hull of said ship has along each side the aft arranged retractable mooring bollard. The ice-resistant pylon for connecting the ship underwater hull to above-water body is executed in the form of a strength longitudinally and transversely framed hull having in the plan view a long and symmetrical shape. The pylon breadth or diameter is significantly less than that of the ship load hull as well as the practical width of channel to be laid by the icebreaker. The pylon height provides the movement of the main deck above the ice surface and underwater hull—beneath the lower ice edge. The invention enables to increase the ship heavy ice-breaking capabilities when going after the icebreaker in the Arctic shelf areas with shallow waters as well as to decrease the ship navigation resistance in broken ice and decrease the height of ship underwater hull. | 01-13-2011 |
Vladislav Medvedev, Haifa IL
| Patent application number | Description | Published |
|---|---|---|
| 20090127515 | PI-CONJUGATED MOLECULES - The invention provides π-conjugated oligomers and polymers. The oligomers and polymers may comprise at least two π-conjugated amino acid subunits. The oligomers and polymers may contain one or more π-conjugated amino acid subunits that are optically, electrically or electronically active. The invention also provides optical, electronic and electric devices comprising oligomers and/or polymers having one or more π-conjugated amino acids that are optically, electrically, or electronically active. | 05-21-2009 |