RU2729762C2 - Detachable drilling bit of self-floating buoy for ice drilling from bottom to top - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: invention relates to a drill bit of self-floating subsurface oceanographic buoy stations, which, when surfacing, can be used to drill ice from bottom to top on ice-covered water areas, mainly in Arctic conditions. Detachable drill bit of self-floating buoy for drilling ice from bottom to top is a complex transceiving antenna with a flashing beacon and detachable drilling tool, installed on drilling systems for drilling of various thickness of sea ice from underwater position from bottom to top. Detachable drilling bit comprises metal tube with cutouts, having a satellite and a radio antenna with a flashing beacon, sealed in a sealed solid radiotransparent transparent mass, on one side having a threaded bushing with a sealed cable passing therethrough for screwing into the drill string and connection with the main communication cable, and on the other side—carrying bushing with feather tip on screw bearing rod. Screw auger extends along the outer surface. Removable drilling bit is used for different lengths of the drill rod depending on the sea ice capacity intended for drilling and comprises: a feather tip on a helical bearing rod screwed into the bearing sleeve of the pen tip in the end part of the hollow body of the bit, having an iridium-type satellite antenna, a radio antenna, optical flashing beacon filled with sealed solid radiotransparent transparent filler having in the other end part a bearing threaded bushing, sealed cable with pressure seal and along the entire outer surface having screw auger.EFFECT: technical result consists in increasing functional capabilities and widening range of devices for investigating ice-covered water areas of the Arctic by means of a new, alternative, combined set of underwater autonomous buoy station with drilling system for drilling ice from bottom to top, which enables to provide data transmission in ice cover conditions.1 cl, 1 dwg

Description

The technical solution relates to the drill bit of self-floating subsurface oceanographic buoy stations, which, when surfacing, can be used to drill ice from bottom to top in ice-covered waters, mainly in the Arctic.

By now, there are many publications and patents on the development of vast Arctic regions covered with ice. In this case, the known technical solutions can be divided into two large groups: 1) research technology by means of buoy stations [9] physicochemical and radiation parameters and other characteristics of sea water and / or the seabed over the investigated area and along the entire depth profile and 2) methods and devices for transmitting measuring information to central control points (including support vessels, communication satellites, underwater vehicles), which ensure the collection and processing of the entire set of data for a given ocean region for monitoring purposes for solving various practical problems: integrated hydrographic research, geological geophysical exploration, prospecting and production of hydrocarbons, ecology and ocean pollution.

The first group can include all kinds of buoy stations and their assemblies (network systems of buoys): surface, drifting (see, for example, [2, 3, 6, 7], etc.), subsurface moored buoy stations, profilers [1, 5 ], US 2002/0035870 A1, 28.03.2002; RU 2297939 C2, 27.04.2007; RU 2325674 C1, 27.05.2008, RU 2404081 C1, 20.11.2010.

However, in these objects, the features of work in ice conditions are either not considered ([5], patents RU 2297939 C2, RU 2325674 C1, RU 2404081 C1), or they are covered rather superficially and declaratively ([3], US 2002/0035870 A1). Thus, the source [3] (based on US patent 8912892 B2, which considers in detail sensor systems for oceanographic monitoring), contains only a general lengthy description of a buoy (a network of buoys) and their use in various cases, including a speculative situation in the fantastic extraterrestrial conditions of Titan, a satellite Saturn.

The second group of technical solutions has a significant section related to the implementation of work in the ice conditions of the Arctic, regardless of the systems for measuring and collecting information by various sensors of marine parameters. They are mainly devoted to the specifics of devices - penetrators, i.e., devices that penetrate (pass) through the ice and form a hole in the ice mass (from Lat. Penetro-penetrate). Known devices are referred to as ice downward penetrators: [4]; US 2010291817 A1, 18.11.2010; US 6097668 A, 01.08.2000; US 5022470 A; US 5014248 (A), 05/07/1991, and penetrators "from below" (ice penetrator upward): [2], [4]; US 5593332 A, 14.01.1997; US 5319376 (A), 07.06.1994; US 5116268 A, 20.05.1992; US 5484027 A, 01.16.1996, forming a hole from the lower underwater ice edge to its surface.

At the same time, the known technology, starting with the one considered in the review patent [4] of the USA in 1987, up to the present time [3] concerns in a significant part thermo- and thermochemical penetrating buoys using melting and melting of ice. Moreover, the opinion is sometimes expressed [4] that mechanical devices can only be used for penetration down from the ice surface.

Nevertheless, as tests show, thermo- and thermochemical ice buoys-penetrators do not have significant advantages over traditional mechanical drilling (drilling).

At the same time, the use of known penetrators "from below" (see [2], [4], etc.) is hampered by the need for precise vertical orientation of the hole being formed (US 5593332 A, US 5319376 A). In addition, thermal (lithium) ice penetrators of the type [2] have a limited technical resource and are not quite acceptable with a significant ice thickness. In this case, one of the main problems of known ice penetrators is ([4], US 6463800 B2) power supply (recharging) during long-term operation.

The well-known underwater buoy system [1] according to the patent US 7874886 B2 with the addition of a drilling tool - an ice generator from the bottom up (which can be considered an analogue, for example, the patent [2]) can serve as a prototype of the proposed technical solution.

The known system [1] contains a serial vertical cable connection of an armature, a breaker, an equipment and power unit, equipped with an electric drive and a float device, as well as a communication unit with an antenna carried out above the surface of the water area. However, the operation of the system [1] in ice conditions is not provided, and the communication antenna is placed directly on the open water surface.

In the conditions of ice-covered water areas, the buoy station should be equipped with a means of drilling ice from the bottom up to bring the antenna into the hole above the ice surface. Moreover, since thermopenetrators of the type [2], apparently, cannot serve as the prerogative of the means of penetrating ice with the formation of holes, it seems that consideration of the combination of the first and second groups of technologies using the traditional, but quite effective practice of drilling (drilling) ice, would allow to expand the arsenal and increase the functionality of the combined means (complex) of the indicated purpose and increase the information content and reliability of the data obtained.

The essence of the proposed technical solution consists in a removable drill bit used in self-floating buoys with an underwater drilling system for drilling ice from the bottom up, having antennas and a beacon in its design.

The main technical result is an increase in the functionality and expansion of the arsenal of devices for exploring the ice-covered waters of the Arctic by means of a new universal removable drill bit used for a drilling system of various lengths with a removable sealed connector, a satellite dish, a radio antenna and a beacon.

The technical result is achieved as follows:

A removable drill bit with a total length of 25 cm is a pipe with cutouts, which has a satellite and radio antenna with a beacon beacon sealed inside into a sealed solid composite radio-transparent colorless mass, on one side having a threaded bushing with a sealed cable passing through it for screwing into the drill string and connections with with the main communication cable, and, on the other hand, a bearing sleeve with a feather tip on a screw bearing rod, while a screw auger runs along the outer surface.

A removable drill bit drills sea crystalline ice to form a hole with a diameter of 35 mm, being a carrier of satellite and high-frequency radio antennas with a beacon and in standby mode in a submerged position withstands external pressure up to 200 MPa.

The invention is illustrated by a drawing: FIG. 1 shows a general view of a detachable drill bit of a self-floating buoy for drilling ice from bottom to top.

The drawing uses the following designations:

1 - pen tip on a screw bearing rod; 2 - bearing sleeve of the feather tip; 3 - hollow body of the drill bit; 4 - screw auger drill bit; 5 - bearing threaded bushing of the drill bit; 6 - sealed cable; 7 - hermetic connector; 8 - satellite dish of the "iridium" type; 9 - radio antenna; 10 - optical flashing beacon; 11 - sealed solid composite radio-transparent colorless filling of the drill bit body.

The work of the proposed technical solution is as follows.

A feather tip is screwed into the removable drill bit into the feather nib bearing sleeve (2) on a screw bearing rod (1). The main transmission cable of the drilling rig passing through the drill rod is connected to the sealed connector (7) on the sealed cable (6), through the threaded bushing (5) the removable drill bit is screwed into the drill rod in such a way that allows the removable drill bit to be installed on the drill rod of any length.

Thus, the invention realizes the specified purpose and is carried out with the achievement of the specified technical result, which is in a causal relationship with the set of essential features of the claims.

SOURCES BY TECHNOLOGY

I. Prototype and analogues:

1. US 2009/0269709 A1, October 29, 2009 (prototype).

2. US 6183326 / B1, 06.02.2001 (analogue).

3. US 20150346726 A1, 05.12.2015 (analogue).

4. US 4651834 A, 03.24.1987 (analogue).

II. Additional prior art sources:

5. RU 2499280 C2, 20.11.2013.

6. RU 136414 U1, 10.10.2014.

7. US 4924698 (A), 15.05.1990.

8. RU 2569938 C2, 10.12.2015.

9. Marine encyclopedic reference book: in two volumes. Volume 1 / Ed. N.N. Isanina. - L .: Shipbuilding, 1987 (Buikova station - p. 98).

III. References to the prior art are also given in the description.

Claims (2)

1. Detachable drill bit of a self-floating buoy for drilling ice from bottom to top, which is a complex transceiver antenna with a beacon and a detachable drilling tool installed on drilling systems for drilling various thicknesses of sea ice from a submerged position from bottom to top, containing a metal pipe with cutouts having sealed inside into a sealed solid composite radio-transparent colorless mass satellite and radio antenna with a flashing beacon, on the one hand having a threaded bushing with a sealed cable passing through it for screwing into the drill string and connecting to the main communication cable, and on the other side - a bearing sleeve with a feather tip on a screw bearing rod, while a screw auger runs along the outer surface, characterized in that it is made in the form of a removable drill bit used for various lengths of the drill rod, depending on the sea ice power expected to be drilled, and contains: a feather tip on screw bearing rod (1), screwed into the bearing sleeve of the feather tip (2) in the end part of the hollow body of the drill bit (3), which has a satellite antenna of the "iridium" type (8), a radio antenna (9), an optical beacon (10), filled with a sealed continuous composite radio-transparent colorless fill (11), having a bearing threaded bushing (5) in the other end part, a sealed cable (6) with a pressure seal (7) and having a screw auger (4) over the entire outer surface. 2. Removable drill bit of a self-floating buoy for drilling ice from bottom to top according to claim 1, characterized in that it is designed to be mounted on drill rods of various sizes with the formation of a hole with a diameter of 35 mm, being a carrier of satellite and high-frequency radio antennas with a beacon and in the waiting in a submerged position withstanding pressure up to 200 MPa.

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