System for drilling operations under the bottom of reservoirs

 

(57) Abstract:

The invention relates to hydraulic construction, in particular for offshore platforms for oil and gas. In the system for drilling operations under the bottom of reservoirs containing floating platform with the placed equipment, float elements, supports, cables and anchors for connection of the float element with the bottom of reservoirs, it is equipped with drilling a chamber in which is located equipment. The chamber is hermetically coupled to the float elements, one of which placed power plant. The float elements are equipped with winches and made of submarines decommissioned from service. Boats bearings are sealed and connected with the platform. Drilling the camera has a tubular structure made of refractory material. The tube-like structure separated by a vertical partition into two parts - for supply of materials and for staff working in a submerged position. The platform can also be fitted with shock absorbers at the joints of the foot platform, an Elevator connecting the power plant with the drilling of the camera, and a mobile manipulator with ladiesman ustroystva work as in surface, and in a submerged condition. 4 C.p. f-crystals, 2 Il.

The invention relates to the field of hydraulic engineering construction, in particular for offshore platforms for oil and gas, mainly in ice conditions.

A known system for drilling operations under the bottom of reservoirs containing a floating platform on the technological equipment for drilling, floating elements, a support for the connection of the float elements and platforms, ropes and anchors for connection of the float element with the bottom of a water body (SU 1541348 A1, 07.02.1990).

However, this system can be used at depths of no more than 300 meters.

The objective of the invention is improving the efficiency of drilling operations in ice conditions due to the operation of a system as in surface and submerged condition.

The above is achieved in that the system includes drilling a chamber within which is located equipment for drilling, the camera is hermetically coupled to the float elements, one of which placed power plant, at the same time to ensure the dive and ascent of the platform due to changes in hydrostatic pressure and volume ballasts decommissioned from service in submarines, hermetically joined the supports with the platform. To maintain atmospheric pressure inside the chamber and residential energy installation in a submerged position drilling the camera is equipped located in the upper part of the tube-like design, while the tube-like structure separated by a vertical partition into two parts - for supply of necessary materials and for staff working in a submerged position, and for dynamic stabilization of the platform it is fitted with shock absorbers placed at the joints of the foot platform.

Tubular design of the drilling chamber may be coated on the outer surface of the refractory shell with high resistivity.

The system can be equipped with an Elevator connecting the power plant with the drilling of the camera.

In addition, the system platform can be equipped with a mobile manipulator, equipped ladiesman device.

In Fig. 1 depicts a system for drilling works in surface position of Fig. 2 - in a submerged position.

System for drilling operations under the bottom of reservoirs includes: drilling the camera 2 (the section of the submarine), 3 floats, the float-the power plant 4, ooccoo 11, cassette with drill pipes 12, drilling equipment 13, the Elevator 14, ladder 15, the casing 17, the sealing ring 18, the dampers 19, opening the door 20. The ice surface is marked position 16.

System for drilling operations under the bottom of reservoirs is as follows. In surface position (Fig. 1) it is transported to the place of drilling operations. Possible option of separate transportation floats 3 (boats) with the support 5 and the platform 1 with the subsequent installation on site drilling. To provide dynamic stabilization of the floats 3 are fixed ropes 7, anchors 8 over spot drilling with respect to the direction of underwater currents. Platform 1 (triangular, rectangular, rounded) with a helipad installed at a certain height above the wave action of the water, by raising and lowering the floats 3 using winches 7, which leads to the reduction of external loads on the device. The float 3 is connected to the platform 1 support 5 service ladder 15. Fixed platform supported by the fixing cover 6. Float-power plant 4 (diesel, nuclear) provides electricity to the drilling and accommodation staff. The Elevator 14 connects pop 2 for drilling operations.

In Fig. 2 shows the position of the system under the ice 16. The depth of immersion of the system depends on ice conditions of the area for drilling, approximately 3-5 meters of the Float 3, connected to the platform 1 by the support 5, is sealed by a mounting cap 6. Mounting opening (door) 20 hermetically closed at the penetration in drilling the camera 2 mounted water sealing ring 18. Through the tubular structure 10 from the ice 16 serves manipulator 9 drill pipe and the necessary materials. Refractory shell 11 provides instant melting of ice in contact with the hot shell. When significant ice movement ladiesman device mounted on the arm 9, is removed ice. In the chamber 2 and the float 4, where the staff remains the atmospheric pressure. After completion of drilling the well system without disassembly transported to another drill site.

1. System for drilling operations under the bottom of reservoirs containing a floating platform on the technological equipment for drilling, floating elements, a support for the connection of the float elements and platforms, ropes and anchors for connection of the float element with the bottom of the reservoir, otlichayusta rig camera, within which is located equipment for drilling, the camera is hermetically coupled to the float elements, one of which placed power plant, and to provide immersion and emersion platform due to changes in hydrostatic pressure and volume of ballast inside the float elements, the latter equipped with winches, all float elements made of submarines, hermetically joined the supports with the platform, and to maintain atmospheric pressure inside the chamber and residential energy installation in a submerged position, the drilling chamber is equipped located in the upper part of the tubular structure, when this tube-like structure separated by a vertical partition into two parts - for supply of necessary materials and for staff working in a submerged position, and for dynamic stabilization of the platform it is fitted with shock absorbers placed at the joints of the foot platform.

2. The system under item 1, characterized in that as the float elements used decommissioned from service in submarines.

3. The system under item 1, characterized in that the tubular construction of Bur>/P>4. The system under item 1, characterized in that it is equipped with an Elevator connecting the power plant with the drilling of the camera.

5. The system under item 1, characterized in that the platform is equipped with a mobile manipulator, equipped ladiesman device.

 

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FIELD: shipbuilding; manufacture of mobile research complexes.

SUBSTANCE: proposed complex is made in form of ship with small waterplane area having upper and lower hulls interconnected by means of telescopic columns for disconnection and autonomous motion of these hulls. Lower hull is submersible vehicle and upper hull is amphibian. Both hulls are provided with greenhouses and power units for generation of energy for motion of complex, domestic and technological purposes, as well as for growing vegetables, sea products and production of distilling water by motion of spheres with plant containers located spirally on their surfaces, thus ensuring generation of electric power. In addition to vegetation tubes with plants growing chains are provided where sea products are contained for distilling sea water by change in pressure and level of illumination and growing chains for growing fish and preparation of nutrient solution for plants. Lower hull is provided with plankton trawls for delivery of plankton for greenhouse and power plants of lower and upper hulls for growing fish and sea products. Amphibian supplies fresh air to submersible vehicle through its collector; it is also used for transportation of sections for erection of scientific research station. Provision is made for delivery of light to submersible vehicle through lenses, light conduits and structural sections and light conduits of collector of vehicle.

EFFECT: environment control.

4 cl, 22 dwg

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