Method of production of gas hydrates and submarine combine for its implementation

FIELD: mining.

SUBSTANCE: method comprises mechanical destruction of seafloor layer by an stripping knife moving along the seafloor, and transportation of destruction products to the surface. The products of destruction are placed in elastic, gas-tight shells, which are collected along the surface and transported them to the place of use in the transportation vessel refrigerators. The combine is a moving platform with a knife for seafloor cleaning with the mounted video camera and the stripping knife under the hole in the platform designed as a horizontally rotating cylinder with the scrapers mounted on it. The platform has two mounted cylinders, the first is a container with shells located horizontally one above another one, and the second one, mounted above the hole, is a loading container in the top side of which the segments with drive mechanisms shifting them from the cylinder axis are located.

EFFECT: improvement of efficiency of ocean production of gas hydrates.

4 cl, 2 dwg

 

The present invention relates to the field of extraction of minerals under the seabed.

The known method of extraction of gas hydrates, which consists in the mechanical destruction of the bottom layer with the sharp edges of the buckets moving along the bottom, and the transportation of gas to the surface with a hose (1). The known method is energy-consuming, because the decomposition of gas hydrate under high pressure requires high heat.

In the above link is actually the method of extraction of gas hydrates, which consists in the mechanical destruction of the bottom layer using a Stripping knife moving along the bottom and the transportation of products of destruction to the surface that is present in many other sources. Known methods are complicated to implement and also energy-consuming.

The purpose of this proposal is to simplify the technology and reduce energy consumption in the extraction of gas hydrates in the ocean.

The goal in the method is achieved in that the products of destruction (hydrates) is placed in a shell that collect on the surface and transported them to the place of use under refrigeration transport vessel.

The goal of the combine harvester is achieved in that the platform houses two cylinders, the first of which is a container having disposed therein the horizontal position�the Talne of each other shells, and the second, mounted over a hole, - a boot container, on top of which there are segments with the drive mechanisms, shifting them from the cylinder axis. In addition, on the side surface of the second cylinder opposite the vertical slot installed: cassette with brackets, clip rings, compression clamp and drive mechanism of the traction rings of the shells constituting the lever with threads that have a thread on the gear bracket, and the shell is made in the form of discs of gas-tight flexible material, secured to the ring of steel.

The possibility of realization.

Fig.1 shows an underwater harvester, which implements the proposed method. The harvester consists of a platform 1, moving across the bottom on wheels - 2. Harvester sinks to the bottom with a support vessel on the cable-rope - 3. On the platform 1 is mounted feeder shells - 4, which is fixed to the container 5 with envelopes - 6, which are crashing flat elastic (in the drawing, transparent) discs strung on a steel ring 7, and container download - 8, which is mounted on the outside: cassette clamping ring brackets 9, the drawing unit rings - 10 with the lever - 11, screw in the bracket gear - 12.

At the bottom of the cassette with compression straps is the clamping mechanism of the last - 13. At the top of the container loading location�; and the locking segments - 14 flat ring, which does not allow the shells to float. The segments are the drive mechanisms 15 and shift them from the axis of the container 8. On the platform - 1 installed: Stripping knife - 16, which is a cylinder, rotating on axes - 17 mounted thereon scrapers - 18, and the knife Stripping the bottom with a video camera - 20. Drive axle - 2 and Stripping knives 16 are not shown.

Production of gas hydrates is as follows: Vessel support (management) together with underwater harvester comes on Board in the explored zone of gas hydrate occurrence of hydrocarbons. The ship should be specialized and have on Board a means for the descent of the combine and control them. Underwater harvester on the cable-the cable comes down over the side and upon reaching the bottom starts moving. The Stripping knife - 19 shifts from the route processor small stones and algae, and the Stripping knife destroys the layer of gas hydrates with the host rock at a depth h. Gas hydrates have a density less than unity and through the hole in the platform to float within the container 8, lifting the shell 7 to the level of the segments 14. This edge of the elastic(steel) ring 14, on which is stretched a membrane, falls under the bracket gear - 12. Further filling of the container the products of destruction - 21 causes deformation of the shell in the form of a dome. The sensor detects the filling Obol�chki and instructs the drawing unit rings - 10. A lever 11 is in the position shown by the dotted line, the gear bracket through a vertical slit (not visible in cross section) in the wall of the container 8 smuggles ring 7 in the form of parallel wires to the outside of the container 8, moving on rails - 22. Further, the clamping mechanism clamps - 13 compresses the clamping bracket wires around the ring. The shell 6 to form gas hydrate products - 21 takes the form of a bag, tilted neck down. Further, the lever 11 starts to rotate around its axis, pulling the bracket - 12, and since the gear bracket is located on the edge guides 22, she's out of the loop ring - 7, freeing him. Almost already at this stage the bag of gas hydrate begins to float to the surface, pulling wire ring - 7 from the cracks in the wall of the container 8. For completely unimpeded ascent bags hydrates the drive mechanisms 15 segments 14 to drive them from the axis of the container 8 to the size of its diameter after the sack of gas hydrates - 21 from the container - 8 return them to the place. Upon surfacing bag a lever 11 is driven in reverse rotation around its axis and bracket gear - 12 rises to a horizontal position.

Feeder grids - 4 by moving the bottom of the grid from the container 5 into the container download - 8. Then the cycle of the formation of bags of gas hydrates is repeated.A bag of gas hydrates in surfacing maintains the position hole down due to weight of steel rings - 7. Because after reaching the critical depth of the gas hydrate begins to decompose (3), the gas displaces the water from the bag, thereby slowing down their decomposition (almost stopping, as they cease to touch the water). Thereby ensuring minimal loss of gas during the extraction of gas hydrates.

The operator on Board the support vessel using the camcorder - 20 controls the movement of the harvester along the bottom. On the surface of the transport vessel collects the bags of gas hydrates and puts them in the fridge. Harvester destroys gas hydrate Deposit layer by layer. His rising to the surface only need to replace the membranes in the container - 5

Sources of information

1. Patent Of Russia №2431042.

2. Egorov A. V., Nigmatulin R. I., Rimsky-Korsakov N. And., Rozhkov A. N. The transport of gas hydrates from the bottom of the deep reservoir to the surface. "Nanoalloy in the development of hydrocarbon fields: from nanomineralogy and nanochemistry to nanotechnology". Proceedings of the 3rd International conference. JSC ISIS and WGI, Moscow on October 30-31, 2012. Moscow: Oil and gas, 2012, pp. 145-150.

1. Method of extraction of gas hydrates from the bottom of water basins, which consists in the mechanical destruction of the bottom layer using a Stripping knife moving along the bottom, and transportation of products of destruction to the surface, characterized in that�UKTI destruction (hydrates) placed in an elastic impervious to gas, shell, which collect on the surface and transported them to the place of use in refrigerating chambers escort ships.

2. Underwater harvester for gas hydrate extraction of hydrocarbons from the bottom of water basins of a moving platform with a knife for Stripping the bottom, placed on it a video camera and Stripping knife under the hole in the platform in the form of a horizontally rotating cylinder mounted thereon scrapers, characterized in that the platform houses two cylinders, the first of which is a container having disposed therein horizontally one above the other shells, and the second, mounted over a hole, - a boot container, on top of which there are segments with the drive mechanisms, shifting them from the cylinder axis.

3. Underwater harvester according to claim 2, characterized in that on the lateral surface of the second cylinder opposite the vertical slot installed: cassette with brackets, clip rings, compression clamp and drive mechanism of the traction rings of the shells constituting the lever with threads that have a thread on the gear bracket.

4. Underwater harvester according to claims.2, 3, characterized in that the first and second cylinders mounted on the feeder shells to the hole download and sheath made in the form of discs of gas-tight e�partial material secured to the ring of steel.



 

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