SU962597A1 - Apparatus for controlling underwater blowout-preventing equipment - Google Patents

Description

one

BACKGROUND OF THE INVENTION The invention relates to the use of sea boreholes by floating means and can be used to control elements of subsea blowout equipment in emergency situations.

Acoustic control devices for underwater equipment are known, which contain surface command equipment, underwater receiving sonar equipment decoder for control commands, resonant relay Ll The disadvantage of the known device is low mechanical disturbance, which reduces the well blocking reliability, as the underwater equipment during drilling is a powerful source of noise of the frequency range .

A control device for underwater} 11M blowout equipment is known, consisting of surface command equipment comprising a start-up unit, a control command generator and a KsnyJ sonar signal, an underwater receiving equipment containing a sonar signal receiver, a control command decoder, an electro-hydraulic unit with a cut-off and with hydraulic distributors.

Each state of these two positional hydraulic distributors is provided with a separate hydraulic control panel line, and to control the shut-off {distribution, Q body, auxiliary channels are provided Connected and Disconnected to connect the electro-hydraulic unit to an external hydropower source 2.

5 The device works as follows.

To implement the full cycle of upg. The commands first give the command Connected, then the necessary commands.

20 control blowout equipment, followed by a command to send a Disabled command. For each of these operations, using command equipment, a corresponding command and control team is formed with an individual informational sign. It is transmitted by the radiator through the waveform through the hydroacoustic communication channel in the form of a coded signal, converted into a receiver into an electrical signal, decoded into a decoder, the output of which produces an electrical signal corresponding to the required operation, which is converted into a hydraulic, control It is either a shutoff or power valve that directs pressure from a source of hydropower to the required blowout preventer. Therefore, the operator, when giving each of the control commands, should provide a certain time interval, which ensures the operation of the underwater hydraulic equipment before the next command arrives. The disadvantages of the known device are the low speed and complexity of the control algorithm, which makes it difficult for the operator to act in emergency situations, when the delay with the overlap of the well leads to open spouting, which is extremely difficult to control in the drilling rig. telna. The purpose of the invention is to shorten the time of controlling the underwater anti-blowout equipment and simplify the algorithm of the operator's work in emergency situations. This goal is achieved by the fact that the device is equipped with a common feature command generator in the above-water equipment and, in underwater equipment, a common command decoder, two AND schemes, Oh OR schemes, a time relay, the inputs of the same AND circuit being connected to the outputs of the control command decoder and through the time relay to one output of the decoder of the common feature command, the outputs of this circuit are And are connected to the power distributors via an electro-hydraulic unit, the inputs of another circuit And are connected to the second output of the decoded: A team general prkznaka through elektrogvdravpt cal unit to slam gidroraspr & divider and to the output of OR gate, whose inputs are connected with outputs deschifrato ra control commands, wherein -gidroraspredelitepi equipped with automatic return mechanism, such as spring. FIG. 1 shows schematically the proposed device; in fig. 2 electro-hydraulic control circuit. The emergency control device for the underwater blowout equipment: a & contains 1 surface command equipment 2 located on the floating surface of the submersible, as well as underwater equipment; round 3, mounted on the main equipment 4. Command equipment 2 includes (fng. 2) start block 5 with controls, for example buttons (not shown), control command generator 6, f (global command 7 common sign to the emitter 8. Receiver the apparatus 3 contains a narrow path 9 connected to the inputs from the encoder 10 control commands, the number of outputs of which corresponds to the number of transmitted control commands and to the decoder 11 commands of a common feature with two identical outputs .The decoders 1O and 11 are through circuits 12 and 13 under Connected to the electrohydraulic unit 14 with a cut-off 15 power 16 hydro-controlled hydrodistributors, jump-spring spring returns. 1). The output of the descaler 11 through the time relay 17 is connected to the And 12 and 13 schemes, and the And 13 scheme controlling the valve of the valve 15 is connected to the outputs of the decoder 10 via cxQviy OR 18 with the same number of inputs. The device works as follows. In order to implement the complete control of the shaper 6 of the control commands and the shaper 7 of the common tool of the front-end device 2, started by the block 5, the control command is formed, which has the insight necessary to control (; responds with a factor of a factor of a factor or a factor of a factor of a factor of effect of a distance of effect of with -'s-pro- cept factor and a factor of a preventive factor of a.). the sign necessary to connect the hydropower source. The electrical control coded in the path of the radiator 8 is converted to acoustically and transmitted through water through the hydroacoustic Ceska communication channel. The received reception Nick 9 underwater agashratury 3 is converted into an electrical signal and entered

em on the decoder 10 teams controllers and decoder 11 ksmandy total $

ka, where it is analyzed for the availability of a common information policy and the individual information of a specific preventer. In the presence of information in the received signal of a common feature, the output of the board 4: rator 10 11 produces an appropriate electrical signal that triggers the time relay 17. If the received SIRnale has information of an individual control command, the output of the Yu 1 $ decoder produces an appropriate electrical signal that is fed to the input of one of the I 12 circuits that controls the power hydraulic distributors 16 through the electrohydraulic unit 14, and x also to the input of the three-input circuit I 13, the control valve of the valve 15, If there are no two other inputs of the circuits AND 12 signals from the output of the time relay 17, the electrical control signals about the output of the electrohydraulic & 2S unit 14 Ensuring actuation of the corresponding hydrodistrictors 16, which send pressure from the source of hydroelectric power to the converters. After the setting time of the relay 17 has passed, it switches off the electro-hydraulic unit 14 from the decoders 10 and 11 through the schemes 12 and 13, resulting in the control valves 15 and 16 js return springs back to their original positions, connecting the preventer working cavities with a drain. When receiving both parts of the command (common feature and control) or any of 40 of them when exposed to acoustic interference, none of the control valves will be switched.

Thus, for the implementation of a full cycle of control of the preventer 45, it is sufficient for the operator to send a single command using the controls of the start-up unit 5.

The introduction of a common feature command to the surface equipment of the team, providing additional information to the team, to the general feature decoder and the time relay to ensure its allocation, at the same time with the spring return of the hydraulic distributors, automates the emergency control technological cycle and, together with the schemes AND and the OR circuit, ensures required system noise immunity.

Claims (2)

Invention Formula The control unit of the underwater blowout equipment containing the surface command equipment, consisting of the short-circuit triggering unit, command generator, control and emitter of sonar signals, underwater equipment consisting of a receiver of hydroacoustic signals, a decoder of control commands, an electro-hydraulic unit with a compartment and power hydraulic distributors, and the body of the spacers, and the body of spacers. the fact that, in order to reduce the management time of underwater blowout equipment and to simplify the operation algorithm in emergency situations, it is equipped with a common feature command generator in surface equipment, and in supply equipment a common command decoder, two AND schemes, OR circuit, time relay, and the inputs of the same AND circuit are: connected to the outputs of the remote control command churator and through the turnips of time to one of the outputs of the descriptor to (Yau (general commands, the outputs of this circuit are And are connected to the power hydraulic distributor via electrohydraulic unit), the inputs of the other circuit And are connected to the second output of the KOMattaa decoder of a common sign, through an electrofluid block to the shut-off valve and the output of the OR circuit, whose inputs are connected to the outputs of the decoder of control commands, while the hydraulic detectors are equipped with automatic return mechanisms, for example, spring-loaded ones. Sources of information taken into account in the examination iHamsM-V-Acousi-ic Comirviand S stew CX anoeogT) iMtey-notioviaE -Ь9 Tectiiricae Se5siovi.bHQrf, -bovi ,, p-16-18 2.GeneraE, CataEogue oJRoovnev Ecvuipmevit, Promotional material, 1878, 1979, p. 618O-6181 (prototype). ABOUT ABOUT: /; V // JwS4NX 1 Lj 4 -sir vt r "I   f Lj YU Dx / x 2 ... 13 / / g g ... xi / -J / ff to gueventoran 2