CN210134850U - Pressure-control tripping system - Google Patents
Pressure-control tripping system Download PDFInfo
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- CN210134850U CN210134850U CN201920535948.5U CN201920535948U CN210134850U CN 210134850 U CN210134850 U CN 210134850U CN 201920535948 U CN201920535948 U CN 201920535948U CN 210134850 U CN210134850 U CN 210134850U
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Abstract
The utility model provides a pressure-control tripping system, which comprises a drilling fluid tank, a drilling pump and a throttle manifold which are connected with the drilling fluid tank through pipelines, a blowout preventer group which is arranged at a drilling well head and is connected with the throttle manifold through pipelines, a well killing manifold which is connected with the blowout preventer group and the drilling pump through pipelines, and a check valve which is arranged at the drilling well head; wherein, the choke manifold is used for control the drilling pump carries out the process of heavy thick liquid injection to the well drilling well head, makes the heavy thick liquid injection end back the well head back pressure value of well drilling well head is zero, the utility model discloses can avoid accuse pressure well drilling tripping in-process drilling fluid to cause the condition of rig floor slippery to take place on the rig floor, improve the security of tripping.
Description
Technical Field
The utility model relates to an oil and gas drilling technical field especially relates to a system of drawing a hole is pressed in accuse.
Background
With the continuous extension and expansion of the field of oil and gas exploration and development, the difficulty of drilling is increasing from land to shallow sea of a beach and from a shallow layer to a deep layer, and higher drilling technology is required in drilling. During the drilling process, the difficulty that the formation pressure coefficient is high and the shallow gas layer, the high-pressure layer and part of the formation contain hydrogen sulfide is met, so that certain danger exists in the drilling work. Well control safety is very important for ensuring smooth drilling operation. The well control safety directly influences the development of oil field enterprises in China, and if the well control safety cannot be guaranteed, the life and property of the country and people can be seriously influenced. Only by improving the well control safety and the professional quality of well control personnel, the oil-gas layer can be found, protected and released to the maximum extent. The main factor causing the dangerous case of well control is the tripping operation, so the safety of the tripping operation plays an important role in well drilling. The improper tripping measures can bring huge economic loss and even threaten the life safety of well site personnel, so the safety of tripping operation has great significance to well control, and the conventional tripping operation cannot meet the requirement of drilling a deep well and a complex well.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a system of drawing a hole is pressed in accuse avoids the drilling of accuse to press and causes the condition emergence of the wet and smooth of rig floor on the drilling rig floor is flowed to the drilling rig in-process drilling fluid, improves the security of drawing a hole.
In order to achieve the above object, the present invention discloses a pressure-controlled tripping system, which comprises a drilling fluid tank, a drilling pump and a throttle manifold connected with the drilling fluid tank through a pipeline, a blowout preventer stack arranged at a drilling well head and connected with the throttle manifold through a pipeline, a killing manifold connected with the blowout preventer stack and the drilling pump through pipelines, and a check valve arranged at the drilling well head;
the choke manifold is used for controlling the process of injecting heavy slurry into the well mouth of the drilling well by the drilling pump, so that the well mouth back pressure value of the well mouth of the drilling well is zero after the injection of the heavy slurry is finished.
Preferably, the blowout preventer stack comprises a drilling spool connected by a pipeline with the kill manifold and the choke manifold, a first ram blowout preventer, a second ram blowout preventer, an annular blowout preventer, and a rotary blowout preventer in communication with the drilling spool.
Preferably, the system further comprises a casing head in communication with the blowout preventer stack, the casing head for connection with a casing in a well.
Preferably, the drilling cross-way comprises a first interface, a second interface, a third interface, and a fourth interface;
the first interface is connected with the kill manifold;
the second interface is connected with the first ram blowout preventer;
the third interface is connected with the throttle manifold;
the fourth interface is connected with the casing head.
Preferably, the choke manifold comprises a choke valve provided on the line and a choke valve controller controlling the choke valve.
Preferably, the flow valve controller is used for forming a control signal according to a wellhead back pressure value, a pressure control tripping height and a heavy slurry height of the pressure control drilling;
and the throttle valve controls the opening of the throttle valve according to the control signal to inject heavy slurry, so that the wellhead back pressure value is zero after the heavy slurry is injected.
Preferably, the throttle valve controller is provided in the throttle control box.
Preferably, a central controller and a wireless transmitter are arranged in the throttle valve controller, and a wireless receiver and an execution controller are arranged in the throttle valve;
the central controller is used for forming a control signal according to a wellhead back pressure value of the pressure-controlled drilling well, the pressure-controlled tripping height and the heavy slurry height;
the wireless transmitter is used for converting the control signal into a wireless signal and transmitting the wireless signal to the wireless receiver of the throttle valve;
the wireless receiver is used for receiving the wireless signal and transmitting the wireless signal to the execution controller;
the execution controller is used for controlling the opening of the throttle valve according to the wireless signal.
Preferably, a first flat plate valve is arranged in a pipeline between the blowout preventer stack and the throttle manifold.
Preferably, a second flat plate valve is arranged in a pipeline between the blowout preventer stack and the kill manifold.
The utility model discloses a be connected the drilling pump with the kill manifold, set up the check valve in the drilling tool and set up blowout preventer stack at the well drilling well head, form the drilling fluid from the drilling fluid tank, the drilling pump, the kill manifold, the drilling cross, the drilling manifold to the drilling fluid circulation circuit of drilling fluid tank, and through the pressure of throttle manifold control drilling fluid circulation circuit, control heavy thick liquid injection process, make the back pressure drop of well drilling well head after the heavy thick liquid of pouring into end zero, can carry out the conventionality and play to bore. The utility model discloses can effectively avoid drilling fluid in the drilling tool to cause the condition of rig floor wet and slippery to take place on the rig floor, ensure safety in the pit, improve the safety of digging out greatly, improve the success rate of having bored complicated stratum.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 illustrates a block diagram of one embodiment of a managed pressure drilling tripping system of the present invention;
reference numerals:
1. the blowout preventer comprises a drilling pump, 2, a connecting pipeline, 3, a kill manifold, 4, a blowout preventer group, 5, a throttle valve, 6, a throttle manifold, 7, a drilling liquid tank, 8, a throttle valve controller, 9, a check valve, 41, a drilling four-way valve, 42, a first ram blowout preventer, 43, a second ram blowout preventer, 44, an annular blowout preventer, 45, a rotary blowout preventer, 46, a casing head, 21, a first ram valve, 22, a second ram valve, 23, a third ram valve, 24 and a fourth ram valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained 24 by a person skilled in the art without creative work belong to the protection scope of the present invention.
According to the utility model discloses, this embodiment discloses a system of drawing a hole is pressed in accuse.
As shown in fig. 1, in the present embodiment, the pressure control tripping system includes a drilling fluid tank 7, a drilling pump 1 and a throttle manifold 6 connected to the drilling fluid tank 7 through a pipeline 2, a blowout preventer stack 4 provided at a drilling wellhead and connected to the throttle manifold 6 through a pipeline 2, a kill manifold 3 connected to the blowout preventer stack 4 and the drilling pump 1 through a pipeline 2, and a check valve 9 provided at the drilling wellhead.
The choke manifold 6 is used for controlling the process of injecting heavy slurry into the drilling wellhead by the drilling pump 1, so that the wellhead back pressure value of the drilling wellhead is zero after the heavy slurry injection is finished.
The utility model discloses a be connected drilling pump 1 and kill manifold 3, set up check valve 9 in the drilling tool and prevent the drilling fluid backspray and set up blowout preventer group 4 at the drilling well head, it follows drilling fluid tank 7 to form the drilling fluid, drilling pump 1, kill manifold 3, drilling cross 41, the drilling fluid circulation circuit of throttle manifold 6 to drilling fluid tank 7, and through the pressure of 6 control drilling fluid circulation circuit of throttle manifold, control heavy thick liquid injection process, make the back pressure of drilling well head fall to zero after the heavy thick liquid of injection ends, can carry out conventional brill. The utility model discloses can effectively avoid drilling fluid in the drilling tool to cause the condition of rig floor wet and smooth to take place on the rig floor, ensure safety in the pit, improve the safety of pulling out of a hole greatly, solve the overflow and leak and with depositing the stratum difficult problem of pulling out of a hole, increase well accuse factor of safety, improve the success rate of having bored complicated stratum
In the preferred embodiment, the blowout preventer stack 4 includes a drilling spool 41 connected by a pipeline 2 to the kill manifold 3 and choke manifold 6, a first ram blowout preventer 42, a second ram blowout preventer 43, an annular blowout preventer 44, and a rotary blowout preventer 45 in communication with the drilling spool 41. The blowout preventer stack 4 in the embodiment is provided with a rotary blowout preventer 45, and the rotary blowout preventer 45 can apply back pressure on a drilling wellhead in the pressure control tripping process to complete pressure control tripping.
Wherein the drilling spool 41 may include a first interface, a second interface, a third interface, and a fourth interface. The first interface, the second interface, the third interface and the fourth interface are communicated with each other. The first interface is connected with the kill manifold 3; the second interface is connected with the first ram blowout preventer 42; the third interface is connected with the throttle manifold 6; the fourth port is connected to the casing head 46 so that the kill manifold 3, the first ram blowout preventer 42, the choke manifold 6, and the casing head 46 communicate with each other. One end of the first ram blowout preventer 42, which is far away from the drilling cross 41, is connected with a second ram blowout preventer 43, an annular blowout preventer 44 and a rotary blowout preventer 45 in sequence, and a blowout preventer group 4 formed by a plurality of blowout preventers is communicated with a drilling wellhead through the drilling cross 41, so that the ejection of drilling fluid caused by the formation pressure is prevented.
In a preferred embodiment, the system further comprises a casing head 46 in communication with the blowout preventer stack 4, the casing head 46 being adapted to be connected to a casing in the borehole, and through the sealed connection of the casing head 46 to the casing, drilling fluid can be injected into the borehole through the casing, for example heavy slurry into the borehole.
In a preferred embodiment, the choke manifold 6 comprises a choke 5 arranged on the line 2 and a choke control 8 controlling the valves of the choke 5.
Further, the flow valve controller is used for forming a control signal according to a wellhead back pressure value of the pressure-controlled drilling well, a pressure-controlled tripping height and a heavy slurry height.
And the throttle valve 5 controls the opening of the throttle valve 5 according to the control signal to inject heavy slurry, so that the wellhead back pressure value is zero after the heavy slurry is injected. The throttle valve controller 8 controls the opening of the throttle valve 5, the size of the opening of the throttle valve 5 can change the flow of the drilling fluid passing through the throttle valve 5, and the heavy slurry injection process can be controlled by the change of the opening of the throttle valve 5, so that the drilling fluid is prevented from flowing out of a drilling wellhead or flowing back.
In a preferred embodiment, the throttle valve controller 8 may transmit a control signal to the throttle valve 5 by wireless transmission to control the opening of the valve of the throttle valve 5. The throttle valve controller 8 is internally provided with a central controller and a wireless transmitter, and the throttle valve 5 is internally provided with a wireless receiver and an execution controller.
The central controller is used for forming a control signal according to a wellhead back pressure value of the pressure-controlled drilling well, the pressure-controlled tripping height and the heavy slurry height. The wireless transmitter is used for converting the control signal into a wireless signal and transmitting the wireless signal to the wireless receiver of the throttle valve 5. The wireless receiver is used for receiving the wireless signal and transmitting the wireless signal to the execution controller. The execution controller is used for controlling the opening of the throttle valve 5 according to the wireless signal. Thereby adjusting the amount of heavy slurry injected through the drilling wellhead.
In an alternative embodiment, the throttle control 8 may be provided in a throttle control box. The throttle valve controller 8 can be protected by the throttle valve 5 control box.
In an alternative embodiment, a first plate valve 21 is provided in the line 2 between the stack 4 and the choke manifold 6. By controlling the opening or closing of the first plate valve 21, it is possible to control whether drilling fluid is injected or not. The first flat valve 21 is arranged in the drilling fluid flowing loop, so that the drilling fluid can be started or stopped from being injected through simple operation of the first flat valve 21 according to actual needs, and the safety of drilling operation is ensured.
In an alternative embodiment, a second flat plate valve 22 is provided in the pipeline 2 between the blowout preventer stack 4 and the kill manifold 3. By controlling the opening or closing of the second plate valve 22, it is possible to control whether the injected drilling fluid is regulated. The provision of the second plate valve 22 in the drilling fluid flow circuit assists in controlling the drilling fluid injection process.
When the pressure control tripping system works, firstly, the throttle valve controller 8 calculates a wellhead back pressure value, a pressure control tripping height and a heavy slurry height of the pressure control tripping according to data such as logging data, drilling data and the like, the heavy slurry injection amount required during tripping can be obtained through the wellhead back pressure value, the pressure control tripping height and the heavy slurry height, a control signal is formed according to the required heavy slurry injection amount, the control signal is transmitted to the throttle valve 5 of the throttle manifold 6 to control the opening or closing of the throttle valve 5, and therefore the preset heavy slurry injection amount is achieved. After the heavy slurry is injected, the pressure drop of the wellhead is zero, the conventional drill tripping can be performed, the condition that the drilling platform is wet and slippery due to the fact that drilling fluid in a drilling tool flows onto the drilling platform can be effectively avoided, the underground safety is ensured, the drill tripping safety is greatly improved, and the success rate of drilling the complex stratum is improved.
In an alternative embodiment, the kill manifold 3 may also be communicated with an external system or device through the pipeline 2, and a third flat valve 23 may also be arranged in the pipeline of the kill manifold 3 communicated with the external system or device, so that different functions and working states of the kill manifold 3 can be realized through opening or closing of the third flat valve 23.
In an alternative embodiment, the choke manifold 6 may further communicate with an external system or device through the pipeline 2, a fourth flat plate valve 24 may be further disposed in the pipeline where the choke manifold 6 communicates with the external system or device, and different functions and operating states of the choke manifold 6 are realized through opening or closing of the fourth flat plate valve 24.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A pressure control tripping system is characterized by comprising a drilling fluid tank, a drilling pump and a throttle manifold which are connected with the drilling fluid tank through pipelines, a blowout preventer stack which is arranged at a drilling wellhead and connected with the throttle manifold through pipelines, a killing manifold which is connected with the blowout preventer stack and the drilling pump through pipelines, and a check valve which is arranged at the drilling wellhead;
the choke manifold is used for controlling the process of injecting heavy slurry into the well mouth of the drilling well by the drilling pump, so that the well mouth back pressure value of the well mouth of the drilling well is zero after the injection of the heavy slurry is finished.
2. The managed pressure tripping system of claim 1, wherein the blowout preventer stack comprises a drilling spool connected by a pipeline with the kill manifold and the choke manifold, a first ram blowout preventer, a second ram blowout preventer, an annular blowout preventer, and a rotary blowout preventer in communication with the drilling spool.
3. The managed pressure tripping system of claim 2, further comprising a casing head in communication with the blowout preventer stack, the casing head for connection with a casing in a wellbore.
4. The managed pressure tripping system of claim 3, wherein the drilling spool comprises a first interface, a second interface, a third interface, and a fourth interface;
the first interface is connected with the kill manifold;
the second interface is connected with the first ram blowout preventer;
the third interface is connected with the throttle manifold;
the fourth interface is connected with the casing head.
5. A pressure controlled tripping system as claimed in claim 1 wherein the choke manifold comprises a choke valve provided on the pipeline and a choke valve controller controlling the choke valve.
6. The pressure controlled tripping system of claim 5, wherein the flow valve controller is configured to develop a control signal based on a wellhead back pressure value, a pressure controlled tripping height, and a mud jack height for the pressure controlled drilling;
and the throttle valve controls the opening of the throttle valve according to the control signal to inject heavy slurry, so that the wellhead back pressure value is zero after the heavy slurry is injected.
7. A pressure controlled tripping system as claimed in claim 6 wherein the throttle valve control is provided in a throttle valve control housing.
8. A pressure controlled tripping system as claimed in claim 6, wherein a central controller and a wireless transmitter are provided in the throttle valve controller, and a wireless receiver and an execution controller are provided in the throttle valve;
the central controller is used for forming a control signal according to a wellhead back pressure value of the pressure-controlled drilling well, the pressure-controlled tripping height and the heavy slurry height;
the wireless transmitter is used for converting the control signal into a wireless signal and transmitting the wireless signal to the wireless receiver of the throttle valve;
the wireless receiver is used for receiving the wireless signal and transmitting the wireless signal to the execution controller;
the execution controller is used for controlling the opening of the throttle valve according to the wireless signal.
9. A pressure controlled tripping system as defined in claim 1 wherein a first plate valve is provided in the line between the blowout preventer stack and the choke manifold.
10. A pressure controlled tripping system as defined in claim 1 wherein a second flat plate valve is provided in the line between the blowout preventer stack and the kill manifold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920535948.5U CN210134850U (en) | 2019-04-19 | 2019-04-19 | Pressure-control tripping system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920535948.5U CN210134850U (en) | 2019-04-19 | 2019-04-19 | Pressure-control tripping system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210134850U true CN210134850U (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920535948.5U Active CN210134850U (en) | 2019-04-19 | 2019-04-19 | Pressure-control tripping system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210134850U (en) |
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2019
- 2019-04-19 CN CN201920535948.5U patent/CN210134850U/en active Active
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