KR20130125250A - Drilling simulator and method for simulating drilling equipment of the same - Google Patents

Abstract

The present invention relates to a drilling simulator and a simulation method thereof which educate people to safely handle a situation when high pressure gas is jetted. According to one embodiment of the present invention, the drilling simulator comprises an operation terminal which has an input unit for operating drilling equipment, and which receives the operation signals of the equipment selected by the input unit; a PLC server which stores information on the operation of the equipment, which generates control signals applied to the equipment based on the stored information on the operation of the equipment and the operation signals receiving from the operation terminal, and which transfers the control signals to the equipment; an oil well control server for calculating the current state of an oil well simulated according to the control signals of the PLC server and displaying the calculated current state of the oil well on the operation terminal; an equipment motion simulation server for changing the position and posture of the equipment according to the control signals of the PLC server. [Reference numerals] (20) Oil well control server;(21) controller;(211) Oil well state identification unit;(212) communication unit;(213) Determination unit;(214) Kick sign provision unit;(215) Simulation unit;(216) Kick removal unit;(217) Mud replacement unit;(218) Mud circulation unit;(219) Validation unit;(23) Operation panel;(231) BOP panel;(232) Choke&kill many fold panel

Description

DRILLING SIMULATOR AND METHOD FOR SIMULATING DRILLING EQUIPMENT OF THE SAME}

TECHNICAL FIELD The present invention relates to a drilling simulator and a simulation method thereof, and more particularly, to a drilling simulator and a simulation method thereof for training to safely handle a high pressure gas ejection situation that may occur during a drilling operation.

In recent years, limited global resources have gradually come to an end due to the rapid industrialization and industrial development trends internationally, and stable production and supply of crude oil has become a very important issue. Recently, along with the development of oil exploration technology on the seabed, large oil companies have felt the necessity of drilling rig with drilling facilities suitable for development of marginal field or deep sea oil field, It is a reality that is actively searching for development.

The drill ship is a device that explores and drills marine underground resources such as crude oil and gas from the ocean. The drill ship is designed to enable the extraction of crude oil and gas from the deep sea area where the offshore platform can not be installed or the sea where the waves are severe. The drill ship has semi-submersible drilling rig and drill ship In order to perform operations at sea, advanced manufacturing techniques are required.

The conventional well pressure control simulation program does not include the operation of drilling equipment, it is difficult to realistically understand the pressure control situation. In addition, in the conventional drilling equipment operation simulator, since there is no oil well control function, the pressure change and the coping situation that may occur during the operation of the drilling equipment could not be trained together.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drilling simulator and a simulation method thereof for training to safely handle a high pressure gas ejection situation that may occur during a drilling operation.

According to an embodiment of the present invention for achieving the above object, an operation terminal having an input means for operating the equipment required for drilling operation, receiving an operation signal of the equipment selected by the input means; It stores information on the equipment operation, and generates a control signal to be applied to the equipment to be adjusted based on the information on the stored equipment operation and the operation signal received from the operation terminal to transmit to the outside to perform the simulation of the equipment. PLC server; An oil well control server configured to calculate a current state of an oil well simulated according to a control signal received from the PLC server so that the calculated current state of the well is displayed on the operation terminal; And it provides a drilling simulator including an equipment operation simulation server for changing the position and attitude of the equipment in accordance with the control signal received from the PLC server.

The well control server includes an operation panel including a BOP panel for opening and closing a passage through which the mud is recovered, a choke and kill manifold panel for changing a mud flow of the choke line and the kill line, and a control signal received from the PLC server. It is preferable to include a controller for changing the current state of the oil well by calculating as an input value and transferring the current state of the oil well to the PLC server to show the current state of the oil well in the operation terminal.

The controller is connected to the equipment operation simulation server with the PLC server therebetween, an oil well state calculator configured to calculate a current state of the oil well being simulated; A communication unit for transmitting the current state of the well calculated by the well state calculation unit to the PLC server; A determination unit determining whether a current state of the well calculated by the well state calculation unit is a preset kick generating condition; A kick symptom providing unit configured to provide kick symptom information indicating that a kick is generated to the manipulation terminal when the current state of the well is a kick generating condition; Simulates the calculated current state of the well, if the current state of the well is a kick generation condition simulation according to the stop signal of the equipment operated from the operation terminal and the closing signal for closing the passage through the BOP panel part; And a kick to remove the kick by circulating the mud while maintaining a constant pressure by adjusting the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal of the mud pump received from the manipulation terminal. It is preferable to include a removal part.

The kick generating condition is preferably a condition in which the pressure of the simulated strata is greater than the pressure in the well.

The controller may include a mud replacement unit for replacing a kick mud having a density higher than that of the mud stored in the mud storage tank when the kick is removed by the kick removing unit; A mud circulation unit configured to circulate the kill mud replaced by the mud replacement unit by opening and closing the choke valve with reference to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And when the choke pressure and the mud pump pressure is '0' while the mud pump is stopped, it is preferable to include a verification unit for verifying that the kick is removed.

The PLC server may include a processing processor for generating a control signal according to pre-programmed control logic received from the operation terminal and transmitting the generated control signal to the well control server and the equipment operation simulation server; And an operation state providing unit configured to receive the position and the attitude value of the equipment received from the equipment operation simulation server and provide the same to the operation terminal and the well control server.

The equipment operation simulation server may change the position and posture of the drilling rig according to the control signal received from the PLC server, and transmit the changed position and posture value to the image processing server displaying the movement of the corresponding equipment.

In addition, according to another embodiment of the present invention, an oil well state calculation unit for calculating the current state of the oil well simulated according to the operation signal of the equipment required for drilling work; A determination unit determining whether a current state of the well calculated by the well state calculation unit is a preset kick generating condition; A kick symptom providing unit for providing kick symptom information indicating that kicking occurs when the current state of the well is a kick generating condition; A simulation unit for simulating the calculated current state of the well, in accordance with a stop signal of the equipment and a closed signal closing the passage through a BOP panel when the current state of the well is a kick generation condition; And a kick removal unit configured to remove the kick by circulating the mud while maintaining a constant pressure by adjusting the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal of the mud pump. to provide.

In addition, the drilling simulator according to another embodiment of the present invention, when the kick is removed by the kick removing unit mud replacement unit for replacing with a mud having a higher density than the density of the mud stored in the mud storage tank; A mud circulation unit configured to open and close the choke valve to circulate the kill mud replaced by the mud replacement unit by referring to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And when the choke pressure and the mud pump pressure is '0' while the mud pump is stopped, it is preferable to further include a verification unit for verifying that the kick is removed.

According to yet another embodiment of the present invention, an operation terminal having an input means for operating equipment required for drilling operation, an equipment operation simulation server for simulating equipment operated by the operation terminal, the operation terminal and the equipment A simulation method of a drilling simulator comprising a PLC server installed between an operation simulation server and an oil well control server for simulating the operation of excavating an oil well, comprising: receiving an operation signal of equipment from the operation terminal; Calculating a current state of the oil well simulated according to the received manipulation signal, and determining whether the calculated current state of the well is a preset kick generating condition; Providing kick symptom information indicating that the kick is generated when the kicking condition is determined as a result of the determining; Simulating with the calculated current state of the well, if the current state of the well is a kick generating condition, simulating according to the stop signal of the equipment operated from the operation terminal and the closing signal closing the passage through the BOP panel; And removing the kick by circulating the mud while maintaining a constant pressure by adjusting the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal input from the operation terminal. A simulation method of a drilling simulator is provided.

The kick generating condition is preferably a condition in which the pressure of the simulated strata is greater than the pressure in the well.

In addition, the simulation method of the drilling simulator according to another embodiment of the present invention after the step of removing the kick, replacing with a mud mud having a higher density than the mud stored in the mud storage tank; Circulating the choke mud by opening and closing the choke valve with reference to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And verifying that the kick is removed when the choke pressure and the mud pump pressure are '0' while the mud pump is stopped.

In addition, the simulation method of the drilling simulator according to another embodiment of the present invention, after the step of providing the kick symptom information, receives the operation signal for lifting the drilling pipe to a certain height through the operation terminal, and the stop signal of the mud pump Making; Reducing the mud flow rate in accordance with the received signal to recalculate the borehole pressure to change the current state of the well; And receiving a closing signal for closing the passage of the BOP panel when the current state of the well changed by the changing step increases the mud recovery flow rate and the mud amount of the mud storage tank.

According to an embodiment of the present invention there is an effect that can be trained to safely handle the high-pressure gas ejection situation that may occur during drilling operations. That is, the pressure change in the oil well and the coping situation that occur according to the drilling depth can be trained together.

In addition, according to an embodiment of the present invention by showing the kick symptom information when the kick occurs during the drilling operation, there is an effect that can quickly deal with the kick occurs.

In addition, according to an embodiment of the present invention, after the kick is generated, the equipment operated through the operation terminal is stopped, and the BOP panel is closed to maintain the pressure in the well higher than the pressure in the well, thereby removing the kick.

In addition, according to an embodiment of the present invention there is an effect that can maintain a constant pressure while operating the mud pump to control the kick and adjust the opening degree of the choke valve.

In addition, according to an embodiment of the present invention, the mud stored in the mud storage tank is replaced with a kill mud, and then circulated to the kill mud to make the pressure in the well equal to the pressure in the well to stabilize the pressure of the well.

In addition, according to the embodiment of the present invention, when the choke pressure and the mud pressure become '0' in the state where the mud pump is stopped, there is also an effect of verifying that the kick is removed.

1 is a block diagram for explaining a drilling simulator according to an embodiment of the present invention,
2 is a block diagram illustrating an oil well control server shown in FIG. 1;
3 is an exemplary view showing a screen of the explosion-proof device panel of the operation panel shown in FIG.
4 is an exemplary view showing a valve device panel among the operation panels shown in FIG. 2;
5 is an operation flowchart for explaining a simulation method of a drilling simulator according to an embodiment of the present invention;
FIG. 6 is an operation flowchart for explaining the kick removing subroutine shown in FIG. 5; and
Fig. 7 is a graph showing the pressure of the strata and the pressure in the well during drilling.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a drilling simulator according to an exemplary embodiment of the present invention, FIG. 2 is a block diagram illustrating an oil well control server shown in FIG. 1, and FIG. 3 is FIG. 2. FIG. 4 illustrates a screen example of the operation panel illustrated in FIG. 4, and FIG. 4 illustrates a screen example of the valve device panel of the operation panel illustrated in FIG. 2.

Referring to FIG. 1, a drilling simulator according to an embodiment of the present invention includes an operation terminal 10, a PLC server 15, an oil well control server 20, and an equipment operation simulation server 30.

The operation terminal 10 is a device for operating the selection of equipment required for drilling the oil well and the movement of the equipment, a plurality of touch panels (not shown) provided for the selection of the equipment required for drilling work, and the movement of the equipment Joystick (not shown) provided for adjustment, and a plurality of operation panel (not shown) for displaying the movement of the equipment. Here, the operation panel may designate basic setting values and limit values for the equipment, and monitor the status of the equipment (eg, position, speed, command status, etc.).

In particular, the manipulation terminal 10 may manipulate a mud pump, a topdrive, and a drawworks to control an oil well.

The operation signal (for example, start / stop of the mud pump, start / stop of drilling of the top drive, up / down of drawworks) of the equipment operated through the operation terminal 10 is sent to the PLC server 15. The control signal, which is input and processed corresponding to the operation signal, is transmitted from the PLC server 15 storing the operation information of the equipment to the well control server 20 and the equipment operation simulation server 30.

The PLC server 15 receives various input values of the operation terminal 10 and transmits the processed result values to the well control server 20 and the equipment operation simulation server 30 through the preprogrammed control logic.

For example, the PLC server 15 may operate from the operation panel in the well control server 20 and the joystick, touch panel, and operation panel of the operation terminal 10 (for example, a signal to stop the mud pump, a tower). The control signal (for example, the mud pump is stopped or the top drive is lowered) is transmitted to the well control server 20 and the equipment operation simulation server 30 according to the control logic that has been programmed in advance. , The pumping speed of the mud pump, the speed of the top drive).

The oil well control server 20 receives a control signal from the PLC server 15 (for example, the mud pump is stopped, the pumping speed of the mud pump), calculates the control signal as an input value, and calculates the temperature, pressure, Change the flow condition. The temperature, pressure, and flow conditions of the oil well are transmitted to the PLC server 15 to be displayed on the operation panel of the operation terminal 10.

The equipment operation simulation server 30 operates the equipment in accordance with the control signal received from the PLC server 15. When the equipment operation simulation server 30 transmits the position value and the attitude value of the equipment operated according to the control signal to the PLC server 15, the PLC server 15 transmits the position value and the attitude value of the equipment to the oil well control server 20. ) And the operation terminal 10 to confirm the operation state.

For example, the equipment operation simulation server 30 receives a control signal (for example, a signal that the top drive has been lowered and the speed of the top drive) from the PLC server 15, and virtually drills the control signal as an input value. Change the position and attitude of the instrument (3D CAD model with kinematic degrees of freedom). The changed position value and posture value may be transmitted to an image processing server (not shown) to be visualized.

In addition, the equipment operation simulation server 30 transmits the position information of the virtual drilling equipment (for example, the height at which the top drive is currently located) to the PLC server 15 to be viewed on the operation panel of the operation terminal 10. do.

The equipment motion simulation server 30 is a simulation server in which a program capable of simulating kinematic motion and motion by a sensor is installed, and a signal manipulated by the manipulation terminal 10 (for example, a signal to lower the top drive). ) Is processed by the control logic of the PLC server 15 (for example, a signal for lowering the top drive to a speed value) to receive the processed control signal.

The equipment operation simulation server 30 changes the position value and the attitude value by increasing the speed of the virtual drilling equipment according to the programmed acceleration value by the received control signal (for example, the top drive speed). At the same time, the position information of the virtual drilling equipment (for example, the height at which the top drive is currently located) is transmitted back to the PLC server 15 to be viewed on the operation panel of the operation terminal 10. At the same time, the PLC server 15 processes the position information of the drilling rig (for example, reads the height lowered by the top drive to change the drilling depth), and transmits it to the well control server 20 to transmit the current state of the well (that is, the drilling depth). Change the temperature, pressure and flow rate of the oil well reflected.

Referring to FIG. 2, the well control server 20 includes a controller 21 and an operation panel 23.

The operation panel 23 includes a blow out preventer (BOP) panel 231, a choke & kill manifold panel 232, and the like. Touching to close the passage through the BOP panel 231 to close the annular passage where the mud is recovered so that the high pressure gas does not rise. The BOP panel 231 is as shown in FIG. 3, and the passage can be opened / closed by touching the BOP panel 231.

The choke & kill manifold panel 232 can also be manipulated to change the mud flow of the choke and kill lines. In FIG. 4, the choke and kill manifold panel 232 is shown. Each time the open button of the choke valve 232a is pressed, the pressure P of the mud pump decreases, and the close button is pressed. Each press of increases the pressure of the mud pump, allowing you to adjust the pressure according to the situation. 232b is a kill valve.

The four operation panels shown at the top of FIG. 4 count the number of round trips for each of the four mud pumps, and display each of the pumps, and one operation panel located below the four operation panels displays the total number of round trips of the four mud pumps. do.

The panel immediately above the choke valve 232a is displayed in the choke pressure window C by 1% when the choke valve 232a is pressed once. By controlling the choke valve 232a provided in the choke and kill manifold panel 232, the degree of opening of the passage through which the mud is recovered can be easily adjusted to a predetermined pressure desired by the operator.

The controller 21 includes an oil well state calculator 211, a communication unit 212, a determination unit 213, a kick symptom providing unit 214, a simulation unit 215, a kick removing unit 216, and a mud replacement unit 217. ), And a mud circulation unit 218 and a verification unit 219.

The well state calculation unit 211 receives a control signal processed through the PLC server 15 for various signals manipulated through the manipulation terminal 10, and receives the received control signal according to a pre-programmed calculation formula or processing logic. Calculate the current state of.

The operator for drilling the oil well is the operator panel 23 in the oil well control server 20, that is, the BOP panel 231, the choke and kill manifold panel 232, or the joystick, touch panel, operation panel in the operation terminal 10. You can operate the equipment at.

The well state calculation unit 211 calculates the current state of the well corresponding to the manipulation of the manipulation panel 23 in the manipulation terminal 10 or the well control server 20. In particular, the well state calculation unit 211 calculates the volume and pressure of the kick introduced into the well using a multi-phase flow mathematical model to analyze the kick behavior when the kick (kick, high pressure gas) occurs.

The communication unit 212 transmits the current state of the well calculated by the well state calculation unit 211 to the PLC server 15. The PLC server 15 transmits the current state of the oil well received from the communication unit 212 to the operation terminal 10. In addition, the communication unit 212 receives the operation signal operated from the operation terminal 10 via the PLC server 15, and receives the information of the equipment simulated from the equipment operation simulation server 30 via the PLC server 15. .

The determination unit 213 determines whether the state of the well calculated by the well state calculation unit 211 is a kick generating condition. During drilling, if the kick pressure is a condition in which the pressure in the stratum is greater than the pressure in the well, depending on the depth of drilling, maneuver the equipment to remove the kick because it leads to an accident by high-pressure gas ejection during the well drilling.

As a result of the determination by the determination unit 213, in the case of a kick generation condition, the kick symptom providing unit 214 provides the kick symptom information indicating that the kick is generated to the PLC server 15 to be viewed through the operation panel of the manipulation terminal 10. do. Thus, the operator can quickly recognize the occurrence of the kick during the drilling operation. The kick symptom information is information indicating an increase in the amount of mud recovery and information indicating an increase in the amount of mud stored in the mud storage tank.

As a result of determination by the determination unit 213, in the case of a kick generation condition, the simulation unit 215 receives a driving stop signal of the equipment operated through the manipulation terminal 10, and receives a closing signal of the passage through the BOP panel 231. Simulates received and received signals.

If the kicking condition occurs when the pressure of the strata is greater than the pressure in the well, the high-pressure gas enters the borehole, which increases the mud return flow and the mud amount of the mud storage tank. By looking at the kick symptom information, it can be known through the manipulation terminal 10 that a kick has been generated.

Accordingly, the simulation unit 215 simulates the current state of the oil well having the simulated mud recovery amount and the mud amount of the mud storage tank. The communication unit 212 transmits the current state of the oil well simulated through the simulation unit 215 to the operation terminal 10 via the PLC server 15. The operation terminal 10 displays the current state of the oil well simulated by the simulation unit 215 on the operation panel of the operation terminal 10 so as to be shown to the drilling worker.

When the drilling operator of the operation terminal 10 sensed the current state of the well, the top drive was lifted by about 2-4 m from the bottom to stop drilling. Input operation signal lifting about 4m and input mud pump stop signal. The top drive operation signal and the mud pump stop signal received through the operation terminal 10 are transmitted to the oil well control server 20 via the PLC server 15.

The simulation unit 215 changes the current state of the well by decreasing the flow rate of the mud and recalculating the borehole pressure, without increasing the drilling depth any more because the drilling stops and the mud pump stops. The current state of the changed well is transmitted in real time to the operation panel 23 of the well control server 20 and the operation panel of the operation terminal 10.

If the mud recovery flow rate and the mud amount of the mud storage tank continue to increase even though the mud pump is stopped, the current state of the increased well is transmitted to the operation terminal 10 and displayed on the operation panel. As the mud recovery flow rate and the mud amount of the mud storage tank are continuously increased, the drilling operator of the operation terminal 10 is convinced that the kick is generated.

Therefore, the simulation unit 215 simulates by closing the passage through the stop signal of the equipment operated from the operation terminal 10 and the BOP panel 231 so that the pressure in the well is maintained higher than the pressure of the stratum. Change the state. At this time, the drilling operation is stopped.

In the state in which the BOP panel 231 is closed, the kick removing unit 216 allows the mud to be supplied according to the driving signal of the mud pump received from the manipulation terminal 10. In addition, the kick removal unit 216 controls the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied to circulate the mud while maintaining a constant pressure to push the kick into the drill follower.

The BOP panel 231 prevents the flow of the mud to the drill follower through a passage through which the mud is recovered, and through a device such as a pipe ram, a blind ram, and a shear ram. Prevent. Opening / closing operation of each ram is performed in the BOP panel 231 of the oil well control server 20. When the ram is closed, the mud pressure of the well is recalculated and displayed through the operation terminal 10.

When the mud is provided due to the closing of the BOP panel 231, the pressure in the well, that is, the pressure at the bottom of the borehole, is increased and the pressure in the well is greater than the stratum pressure, thereby preventing additional kick from entering.

The kick can be removed by adjusting the choke valve provided on the choke and kill manifold above the drilling line. This choke valve can control opening and closing in the choke and kill manifold panel of the well control server 20. In this case, the reference value for opening and closing the choke valve may be a standpipe pressure (the pressure of the standpipe in the drill follower of the drilling line). Since the standpipe is the first passage through which the mud discharged from the mud pump passes, it tends to be similar to the mud pump pressure. Done. In other words, while maintaining the pressure in the well, the mud is circulated to push the kick into the drill follower to remove the kick. Therefore, the drilling operator opens or closes the choke valve while confirming that the mud pump pressure is kept constant.

The mud replacer 217 is replaced by a kill mud having a density higher than that of the old mud stored in the mud storage tank when removed by the kick remover 216.

Mud circulation 218 circulates the replaced kill mud through the mud pump. That is, the mud circulator 218 opens and closes the choke valve with reference to the total pump reciprocation and the mud pump pressure injected from the four mud pumps provided in the choke and kill manifold panel to circulate the replaced mud mud.

When the kill mud is circulated by the mud circulation unit 218, the verification unit 219 determines whether the choke pressure and the mud pump pressure are '0' while the mud pump is stopped, and if the kick is both '0' Verify that it has been removed.

When all the kicks are removed as described above, the top drive is operated to operate the mud pump and the BOP panel 231 to replace the old mud remaining in the annulus with the kill mud and restart drilling. Manipulate through

Therefore, during drilling of the well, the drilling equipment and the BOP panel 231 are operated while monitoring the condition of the well, and the drilling is stopped, the kick is removed, and after the kick is circulated to the dense kill mud, it is verified that all the kicks are removed. You can train them to get started safely.

In this embodiment, but described as a drilling simulator including the operation terminal 10, PLC server 15, oil well control server 20 and the equipment operation simulation server 30, in another embodiment is implemented through a single server It is possible.

The simulation method of the drilling simulator having such a configuration will be described below with reference to FIG. 5.

5 is an operation flowchart for explaining a simulation method of a drilling simulator according to an embodiment of the present invention.

Referring to FIG. 5, the PLC server 15 receives an operation signal of equipment operated through the operation terminal 10 (S11).

The operation signal of the equipment operated through the operation terminal 10 is input to the PLC server 15, and the PLC server 15 storing the operation information of the equipment receives a control signal processed corresponding to the operation signal of the equipment. Transmission to the control server 20 and the equipment operation simulation server 30 (S13).

The well control server 20 calculates a current state of the well being simulated according to the control signal transmitted from the PLC server 15 (S15).

The well control server 20 determines whether the calculated current state of the well is a kick generating condition (S17). Kicking condition refers to a condition where the pressure in the strata is greater than the pressure in the well.

As shown in the graph shown in FIG. 7, (a) represents the pore pressure (pressure of the gas in the strata) according to the depth from the water surface, and (b) the fracture pressure (fracture pressure) (C) represents hydrostatic pressure (the pressure of the mud in the passage where the mud is recovered). As shown in FIG. 7, it can be seen that the kicking condition is a point K where the pressure of the strata is greater than the pressure of the well.

As drilling proceeds, the drilling depth deepens, and as the drilling depth deepens, the pore pressure increases. Therefore, if the drilling continues, the pore pressure becomes greater than the hydrostatic pressure at some point so that the high pressure gas in the ground layer enters the borehole. This situation is referred to as a kick.

If the state of the oil well calculated as a result of the determination in step S17 is not a kicking condition, the oil well control server 20 moves the process to the above-described step S11 and sends an operation signal of equipment for drilling the oil well through the operation terminal 10. Receive input.

If the oil well state calculated as a result of the determination in step S17 is a kick generating condition, the oil well control server 20 displays the kick symptom information indicating that the kick is generated through the manipulation panel of the manipulation terminal 10. Provided to (S18).

The PLC server 15 raises the drilling pipe from the bottom about 2-4m to stop drilling and the operation signal for lifting the top drive about 2-4m, and the mud pump stop signal. Receive (S19).

The oil well control server 20 stops drilling and does not increase the drilling depth any more because the mud pump is stopped, and reduces the flow rate of the mud and recalculates the borehole pressure to change the current state of the well (S21).

Although the mud pump is stopped, the oil well control server 20 determines whether the mud recovery flow rate and the mud amount of the mud storage tank continue to increase (S22).

If the determination result of step S22 does not continue to increase, the oil well control server 20 moves the process to the above-described step S11 and receives an operation signal of equipment for drilling an oil well through the operation terminal 10.

As a result of the determination in step S22, the oil well control server 20 transmits the current state of the well to the operation terminal 10 via the PLC server 15 so as to be shown on the operation panel (S23). As the mud recovery flow rate and the mud amount of the mud storage tank are continuously increased, the drilling operator of the operation terminal 10 is convinced that the kick is generated.

The oil well control server 20 receives a closing signal through the PLC server 15 to close the passage through the BOP panel 231 so that the pressure in the well is maintained higher than the pressure of the ground layer (S24).

Then, the well control server 20 changes the current state of the well by simulating according to the closing signal of the BOP panel 231 (S25). When the mud is provided due to the closing of the BOP panel 231, the pressure in the well may be greater than the layer pressure, thereby preventing additional kick from entering.

The well control server 20 then performs a kick removal subroutine to remove the kick in the well (S30).

Referring to FIG. 6, the kick removal subroutine S30 will be described. The well control server 20 allows the mud to be supplied according to the driving signal of the mud pump received from the manipulation terminal 10 (S31).

Next, the well control server 20 adjusts the opening degree of the choke valve provided in the choke and kill manifold panel 232 while the mud is supplied to circulate the mud while maintaining a constant pressure to discharge the kick to the drill follower (S32). ).

After the kick is removed, the well control server 20 replaces the kill mud having a higher density than the density of the old mud stored in the mud storage tank (S33).

The oil well control server 20 circulates the replaced kill mud through the mud pump (S34).

If all the kill mud is circulated, the well control server 20 receives the stop signal of the mud pump through the operation terminal 10 (S35).

The well control server 20 determines whether the choke pressure and the mode pump pressure are '0' while the mud pump is stopped (S36).

If the choke pressure and the mud pump pressure are not '0', the oil well control server 20 moves the process to the above-described step S33. However, if the choke pressure and the mud pump pressure are not '0', the density of the kiln is wrongly calculated.

As a result of the determination in step S36, when the choke pressure and the mud pump pressure are '0', the oil well control server 20 verifies that the kick is removed when the choke pressure and the mud pump pressure are '0' (S37).

Again in FIG. 4, the well control server 20 sends the mud pump and BOP panel 231 to replace the old mud with the kill mud remaining in the annulus where the mud is recovered after verification is complete. The top drive is manipulated through the operation terminal 10 to operate and restart drilling (S40).

This will safely remove kicks that may occur during drilling and train them to drill again.

The invention being thus described, it will be obvious that the same way may be varied in many ways. Such modifications are intended to be within the spirit and scope of the invention as defined by the appended claims.

10: operation terminal 15: PLC server
20: well control server 30: equipment operation simulation server
21: controller 211: well state calculation unit
212: communication unit 213: judgment unit
214: Kick symptom providing unit 215: Simulation unit
216: kick removal unit 217: mud replacement unit
218: mud circulation 219: verification unit
23: operation panel 231: BOP panel
232: Choke & Kill Manifold Panel

Claims (13)

An operation terminal having an input means for manipulating the equipment required for the drilling operation and receiving an operation signal of the equipment selected by the input means;
It stores information on the equipment operation, and generates a control signal to be applied to the equipment to be adjusted based on the information on the stored equipment operation and the operation signal received from the operation terminal to transmit to the outside to perform the simulation of the equipment. PLC server;
An oil well control server configured to calculate a current state of an oil well simulated according to a control signal received from the PLC server so that the calculated current state of the well is displayed on the operation terminal; And
Drilling simulator including a machine operation simulation server for changing the position and attitude of the equipment in accordance with the control signal received from the PLC server. The method according to claim 1,
The well control server
An operation panel having a BOP panel for opening and closing a passage through which the mud is recovered, a choke and kill manifold panel for changing the mud flow of the choke line and the kill line,
And a controller for calculating a control signal received from the PLC server as an input value to change the current state of the well and transfer the current state of the oil well to the PLC server so that the current terminal state of the changed well is shown to the operation terminal. Drilling simulator, characterized in that. The method according to claim 2,
The controller
It is linked with the equipment operation simulation server with the PLC server in between,
An oil well state calculator for calculating a current state of the oil well being simulated;
A communication unit for transmitting the current state of the well calculated by the well state calculation unit to the PLC server;
A determination unit determining whether a current state of the well calculated by the well state calculation unit is a preset kick generating condition;
A kick symptom providing unit configured to provide kick symptom information indicating that a kick is generated to the manipulation terminal when the current state of the well is a kick generating condition;
Simulates the calculated current state of the well, if the current state of the well is a kick generation condition simulation according to the stop signal of the equipment operated from the operation terminal and the closing signal for closing the passage through the BOP panel part; And
Kick removal to remove the kick by circulating the mud while maintaining a constant pressure by adjusting the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal of the mud pump received from the operation terminal Drilling simulator comprising a part. The method according to claim 3,
The kick generating condition is a drilling simulator, characterized in that the pressure of the simulated strata is greater than the pressure in the well. The method according to claim 3,
The controller
A mud replacement unit for replacing a kick mud having a density higher than that of a mud stored in a mud storage tank when the kick is removed by the kick removing unit;
A mud circulation unit configured to circulate the kill mud replaced by the mud replacement unit by opening and closing the choke valve with reference to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And
And a verification unit for verifying that the kick is removed when the choke pressure and the mud pump pressure are '0' while the mud pump is stopped. The method according to claim 1,
The PLC server
A processing processor for generating a control signal according to pre-programmed control logic and transmitting the generated control signal to the well control server and the equipment operation simulation server; And
Drilling simulator comprising an operation state providing unit for receiving the position and attitude value of the equipment received from the equipment operation simulation server to provide to the operation terminal and the well control server. The method according to claim 1,
The equipment operation simulation server changes the position and attitude of the drilling rig according to the control signal received from the PLC server, and transmits the changed position and attitude value to the image processing server displaying the movement of the equipment. Drilling simulator. An oil well state calculator configured to calculate a current state of an oil well simulated according to an operation signal of equipment required for drilling work;
A determination unit determining whether a current state of the well calculated by the well state calculation unit is a preset kick generating condition;
A kick symptom providing unit for providing kick symptom information indicating that kicking occurs when the current state of the well is a kick generating condition;
A simulation unit for simulating the calculated current state of the well, in accordance with a stop signal of the equipment and a closed signal closing the passage through a BOP panel when the current state of the well is a kick generation condition; And
And a kick remover configured to remove the kick by circulating the mud while maintaining a constant pressure by adjusting the opening degree of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal of the mud pump. Drilling simulator. The method according to claim 8,
A mud replacement unit for replacing a kick mud having a density higher than that of a mud stored in a mud storage tank when the kick is removed by the kick removing unit;
A mud circulation unit configured to open and close the choke valve to circulate the kill mud replaced by the mud replacement unit by referring to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And
And a verification unit for verifying that the kick is removed when the choke pressure and the mud pump pressure are '0' while the mud pump is stopped. An operation terminal having an input means for operating equipment required for drilling operation, an equipment operation simulation server for simulating the equipment operated by the operation terminal, a PLC server installed between the operation terminal and the equipment operation simulation server, and an oil well A simulation method of a drilling simulator including an oil well control server that simulates excavation work,
Receiving an operation signal of equipment from the operation terminal;
Calculating a current state of the oil well simulated according to the received manipulation signal, and determining whether the calculated current state of the well is a preset kick generating condition;
Providing kick symptom information indicating that the kick is generated when the kicking condition is determined as a result of the determining;
Simulating with the calculated current state of the well, if the current state of the well is a kick generating condition, simulating according to the stop signal of the equipment operated from the operation terminal and the closing signal closing the passage through the BOP panel; And
And controlling the opening of the choke valve provided in the choke and kill manifold panel while the mud is supplied according to the driving signal of the mud pump inputted from the operation terminal, circulating the mud to remove the kick while maintaining a constant pressure. Simulation method of drilling simulator. The method of claim 10,
The kick generating condition is a drilling simulator, characterized in that the pressure of the simulated strata is greater than the pressure in the well. The method of claim 10,
After removing the kick,
Replacing with a mud having a higher density than the mud stored in the mud storage tank;
Circulating the choke mud by opening and closing the choke valve with reference to the total reciprocation of the mud pump and the mud pump pressure provided in the choke and kill manifold panel; And
And verifying that the kick is removed when the choke pressure and the mud pump pressure are '0' while the mud pump is stopped. The method of claim 10,
After providing the kick symptom information,
Receiving an operation signal for lifting a drilling pipe at a predetermined height and a stop signal of a mud pump through the operation terminal;
Reducing the mud flow rate in accordance with the received signal to recalculate the borehole pressure to change the current state of the well; And
And receiving a closing signal for closing the passage of the BOP panel when the current state of the well changed by the changing step increases the mud recovery flow rate and the mud amount of the mud storage tank. Simulation method.

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