CN210439997U - Relief valve discharge system for high-pressure slurry pump and well completion pump - Google Patents
Relief valve discharge system for high-pressure slurry pump and well completion pump Download PDFInfo
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- CN210439997U CN210439997U CN201920476772.0U CN201920476772U CN210439997U CN 210439997 U CN210439997 U CN 210439997U CN 201920476772 U CN201920476772 U CN 201920476772U CN 210439997 U CN210439997 U CN 210439997U
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Abstract
The utility model relates to a high pressure slush pump and well completion pump relief valve system of releasing, including setting up relief valve under mud pump chamber bottom deck (1) and releasing cabin (2), bilge well (3), dangerous pollution and release cabinet (4), still be provided with well completion pump (5) and parallel first slush pump (18) and second slush pump (19) on being located bottom deck (1). Two discharging pipelines extend out of two sides of the discharge cabin (2) respectively and are connected with a safety valve discharge high-pressure pipeline and a pump cylinder overhaul low-pressure discharge pipeline of the slurry pump, and a discharging pipeline extends out of one side of the discharge cabin (2) and is connected with a well completion pump (5); a discharge pipeline (6) connected with the dangerous pollution discharge cabinet (4) extends from one side of the discharge cabin (2) and below the discharge pipeline; the utility model discloses can receive multiple media such as diesel oil, mud, ethylene glycol and salt solution that high pressure slush pump and well completion pump were carried, the system of releasing is mutually independent with mud and completion fluid perfusion system, has effectively solved the problem of releasing of the mud of the storage of high pressure slush pump jar when overhauing.
Description
Technical Field
The invention relates to a safety valve discharge pipeline system design suitable for a high-pressure slurry pump and a well completion pump of a semi-submersible drilling and workover platform, in particular to a safety valve discharge pipeline for multiple media of the semi-submersible drilling and workover platform.
Background
The semi-submersible drilling and well repairing platform is a novel platform developed in recent years, and is a movable floating device integrating the functions of drilling and well repairing into a whole, a high-pressure system of the platform consists of a high-pressure mud system and a high-pressure well completion fluid system, 2 high-pressure mud pumps (5000PSI or 7500PSI) and 1 high-pressure well completion pump (10000PSI) are correspondingly arranged in a mud pump chamber, the medium conveyed by the former is mud, the medium conveyed by the latter is saline water, diesel oil and ethylene glycol, and in order to prevent the pipeline overpressure from causing danger, a pressure safety valve is arranged at the outlet of the two pumps. When a safety valve of the slurry pump is detonated, slurry is discharged to a specific slurry pool through the safety valve, and the slurry can only be discharged to a dangerous pollution discharge cabinet at present because media conveyed by a well completion pump pollute the slurry. The distance from the outlet of the safety valve of the slurry pump to the slurry discharge pool and the distance from the outlet of the safety valve of the well completion pump to the dangerous pollution discharge cabinet are both very far, and the pipeline is a high-pressure pipeline, so that the pipeline is difficult to arrange, the material consumption is high, and the field construction amount is large. In addition, a pump cylinder of the slurry pump is provided with a maintenance discharge outlet, when the slurry pump is maintained, slurry in the cylinder body is discharged in a gravity discharge mode, and the slurry pump chamber is a safe area and does not have a closed dangerous discharge cabinet due to the fact that the slurry possibly contains dangerous gas, so that the interface is connected everywhere, the slurry pump chamber can be plugged only by a blind flange at present, and the design requirement is not met strictly. How to solve the problem of arrangement of discharge pipelines of safety valves of various media high-pressure pumps in a slurry pump chamber is a big difficulty designed on the existing drilling and workover platform.
Disclosure of Invention
The invention provides a safety valve discharge pipeline system in order to meet the arrangement requirements of safety valve discharge pipelines of various media such as slurry, salt water, diesel oil, ethylene glycol and the like delivered by a semi-submersible drilling and workover platform slurry pump and a well completion pump.
In order to achieve the purpose, the invention provides a high-pressure slurry pump and a safety valve discharge system of a completion pump. Two sides of the discharge cabin respectively extend out of a discharge pipeline and are connected with the completion pump and the mud pump; a discharge pipeline connected with the dangerous pollution discharge cabinet extends out of one side of the discharge cabin and below the discharge pipeline; and a ventilating overflow pipe extends to the upper part of the sewage well from one side of the discharge cabin and above the discharge pipeline.
In the above safety valve discharge system for the high-pressure slurry pump and the completion pump, preferably, two discharge pipelines extend from two sides of the discharge cabin respectively to be connected with a safety valve discharge high-pressure pipeline and a pump cylinder maintenance low-pressure discharge pipeline of the slurry pump.
In the above high-pressure slurry pump and completion pump safety valve discharge system, preferably, the pump cylinder maintenance low-pressure discharge pipeline is provided with a maintenance discharge port, the safety valves are arranged on the safety valve discharge high-pressure pipelines of the slurry pump, and the discharge pipeline communicated with the maintenance discharge port is arranged on the discharge pipeline communicated with the safety valves.
In the above relief system for the safety valve of the high-pressure slurry pump and the completion pump, preferably, a butterfly valve, a gate valve, a pneumatic diaphragm relief pump and expansion joints located on two sides of the pneumatic diaphragm relief pump are further arranged on the relief pipeline.
In the above-mentioned relief system for the high-pressure slurry pump and the completion pump safety valve, preferably, a level sensor and a drilling control system are arranged above the bottom deck and connected to the relief tank.
In the above relief system for the high-pressure slurry pump and the completion pump, preferably, a manhole cover communicated with the relief cabin is further arranged above the bottom deck.
The invention not only considers the discharge requirements of the high-pressure slurry pump and the well completion pump, solves the discharge problems of various media and a plurality of outlets, reduces the influence of the discharge pipeline on the inlet system as much as possible, but also fully simplifies the arrangement of the high-pressure pipeline. The system is provided with a special closed safety valve discharge cabin at the double-layer bottom of a slurry pump chamber, and the safety valve of 2 mud pumps and 1 well completion pump discharges fluid and slurry stored in a pump cylinder of the high-pressure mud pump enters the discharge cabin from the side surface of the discharge cabin during maintenance; conveying the fluid in the discharge cabin to a dangerous pollution discharge cabinet for treatment through a lightering pump of a deck discharge system; the discharge cabin is provided with a ventilating overflow pipeline, and the pipeline is arranged to a sewage well of a nearby dangerous area room; the relief tank is provided with a liquid level sensor for integrating signals into a drilling control system.
Compared with the traditional discharge system, the discharge system of the slurry pump and the safety valve pipeline of the completion pump has the following characteristics: the arrangement of the relief valve discharge pipeline is simple. Compared with the method that the high-pressure discharge pipelines of the safety valves of the slurry pumps are respectively led to a specific slurry pool, and the high-pressure discharge pipelines of the well completion pumps are led to the dangerous pollution discharge cabinet, the safety valve discharge system disclosed by the invention is provided with the discharge cabin nearby, and all the high-pressure pipelines are connected to the discharge cabin, so that the high-pressure pipelines are simpler to arrange. The discharge system and the original slurry system are mutually independent, and the arrangement of an original slurry pool is not influenced. The relief valve relief system of the invention does not return the relief fluid to the mud pit, does not affect the stability of the original mud pit system, and reduces the influence on the arrangement of equipment and pipelines on the top of the mud pit. The device can simultaneously receive the discharge of various dangerous media. The safety valve discharge system solves the problem of discharge of the safety valve of the well completion pump for conveying various media, and the discharge system and the inlet system are not crossed, so that the risk of pollution to the original perfusion system is reduced. The safety valve discharge system effectively solves the problem that the mud stored in the pump cylinder of the high-pressure mud pump is not discharged when in maintenance.
Drawings
FIG. 1 is a schematic representation of a mud pump and completion pump safety valve bleed line system of the present invention;
FIG. 2 is a front view of the slurry pump chamber of the semi-submersible drilling and workover platform of the present invention;
FIG. 3 is a side view of the semi-submersible rig mud pump chamber of the present invention.
A bottom deck 1; a relief cabin 2; a bilge well 3; a hazardous contamination discharge cabinet 4; a completion pump 5; a bleed line 6; a gas permeable overflow pipe 7; a butterfly valve 8; a gate valve 9; a pneumatic diaphragm relief pump 10; an expansion joint 11; a liquid level sensor 12; a drilling control system 13; manhole cover 14; a slurry treatment chamber 15; a slurry treatment tank 16; a port mud pit 17; a first mud pump 18; a second mud pump 19; starboard mud pit 20.
Detailed Description
As shown in fig. 1-3, the high pressure mud pump and completion pump safety valve discharge system of the present invention comprises a safety valve discharge cabin 2 disposed below a bottom deck 1 of a mud pump chamber, a sewage well 3, a dangerous pollution discharge cabinet 4, and a completion pump 5 and a first mud pump 18 and a second mud pump 19 disposed in parallel above the bottom deck 1. Two discharging pipelines are respectively extended from two sides of the discharge cabin 2 and are connected with a safety valve discharge high-pressure pipeline and a pump cylinder maintenance low-pressure discharge pipeline of the slurry pump, one side of the discharge cabin 2 is also extended with one discharge pipeline and is connected with a well completion pump 5, a maintenance discharge port is arranged on the pump cylinder maintenance low-pressure discharge pipeline, safety valves are arranged on the safety valve discharge high-pressure pipelines of the slurry pump, and the discharging pipelines communicated with the maintenance discharge port are arranged on the discharge pipelines communicated with the safety valves. A discharge pipeline 6 connected with the dangerous pollution discharge cabinet 4 extends out of one side of the discharge cabin 2 and below the discharge pipeline; a gas permeable overflow pipe 7 extends from one side of the discharge chamber 2 and above the discharge line to above the sump 3.
The discharge pipeline 6 is located below the discharge pipeline, the discharge pipeline 6 is further provided with a butterfly valve 8, a gate valve 9, a pneumatic diaphragm discharge pump 10 and expansion joints 11 located on two sides of the pneumatic diaphragm discharge pump, liquid in the discharge cabin 2 is discharged through the pneumatic diaphragm pump 10 connected with the deck discharge system through the butterfly valve 8, finally reaches the dangerous pollution discharge cabinet 4, and is discharged after being treated by the pollutant treatment device.
Located above the bottom deck 1 and connected to the relief cabin 2 is a level sensor 12 and a drilling control system 13. A manhole cover 14 communicated with the discharge cabin 2 is also arranged above the bottom deck 1. The discharge system is provided with a safety valve discharge cabin 2 in the double-layer bottom of a slurry pump chamber, and a safety valve discharge high-pressure pipeline of a slurry pump and a well completion pump 5 penetrates through the bottom-layer deck and is connected to the safety valve discharge cabin 2 from the side; the mud pump cylinder overhauls the low pressure pipeline of blowdown and connects to the blowdown cabin with the same method, and the pipeline is arranged simply. The top of the discharge cabin 2 is provided with a manhole cover 14, a liquid level sensor 12 and a liquid level alarm integrated into a drilling control system 13; the blow-off compartment venting, overflow line 7 is arranged to the sump 3 in the sludge treatment chamber 15.
The invention will be further illustrated by way of example and as shown in figure 1, the system of the invention is preferably such that the first mud pump 18 relief high pressure line passes through the mud pump chamber sub deck 1 and is laterally connected to the relief valve relief chamber 2, and the first mud pump 18 cylinder service relief low pressure line passes through the mud pump chamber sub deck 1 and is also laterally connected to the relief valve relief chamber 2. Corresponding to the arrangement of the relief valve discharge high pressure line on the left side of the first mud pump 18 in fig. 2, and the arrangement of the pump cylinder maintenance low pressure discharge line on the right side. The second mud pump 19 dump valve discharge and cylinder service discharge line is arranged in the same way as the first mud pump. The high pressure completion pump 5 safety valve relief high pressure piping runs through the mud pump chamber bottom deck 1 and is laterally connected to the safety valve relief cabin 2, corresponding to the piping arrangement on the left side of the completion pump 5 in fig. 2. It can be seen that the mud pump and completion pump high pressure piping arrangement is quite simple.
The discharge cabin 2 is provided with a liquid level sensor 12 and is provided with a high-level alarm, when a certain amount of liquid is accumulated in the discharge cabin, the liquid is transferred to a dangerous pollution discharge cabinet through a pneumatic diaphragm pump of a deck discharge system, and the liquid is discharged after being treated by a pollutant treatment device. The safety valve discharge cabinet is provided with a ventilating overflow pipe 7, and the pipeline is arranged at the upper part of a sewage well of a mud treatment chamber of an adjacent safety area so as to meet the requirement of a dangerous area. The alarm signal of the liquid level sensor 12 is integrated into the well drilling control system 13, and the safety valve detonation protection and the detonation alarm are combined, so that an operator can shut down the slurry pump in time.
As shown in fig. 2, in the present invention, it is preferable that a slurry pump chamber is located in the upper hull, 2 high- pressure slurry pumps 18 and 19 are arranged in the chamber, 1 completion pump 5 is arranged in the chamber, a port slurry tank 17 and a starboard slurry tank 20 are located on both sides of the slurry pump chamber, the stern part of the slurry pump chamber is a slurry treatment chamber 15, a slurry treatment tank 16 is also arranged in the slurry treatment chamber, a sewage well 3 is arranged in the chamber, a safety valve discharge chamber 2 is arranged at the bottom of the double layer, and a liquid level sensor 12 is arranged at the top of the discharge chamber.
As shown in figure 3, the upper ship body is preferably divided into four layers, namely a double-layer bottom, a bottom deck 1 of a mud pump chamber, the top of a mud pit and a main deck from bottom to top. The safety valve discharge cabin 2 is arranged in the double-layer bottom and is positioned between the second slurry pump 19 and the well completion pump 5, the discharge cabin 2 is a ship structure cabin, the top of the discharge cabin is provided with a manhole cover 14, and the volume of the discharge cabin 2 is determined on the basis of meeting a certain safe operation coefficient based on the maximum flow of the slurry pump and the well completion pump, for example: volume of the relief cabin is 6.0m3And when the safety valve is detonated, the driller in the driller room has enough time to stop the pump. The top of the discharge cabin is provided with a liquid level sensor 12 which is provided with a high-level alarm point. The detonation of the safety valve of the high-pressure pump is generally defined as an accident, the occurrence frequency is very low, and soft protection is arranged on a slurry pump and a well completion pump control system, so that the risk of the detonation of the safety valve is greatly reduced.
Compared with the traditional discharge system, the discharge system of the slurry pump and the safety valve pipeline of the completion pump has the following characteristics: the arrangement of the relief valve discharge pipeline is simple. Compared with the method that the high-pressure discharge pipelines of the safety valves of the slurry pumps are respectively led to a specific slurry pool, and the high-pressure discharge pipelines of the well completion pumps are led to the dangerous pollution discharge cabinet, the safety valve discharge system disclosed by the invention is provided with the discharge cabin nearby, and all the high-pressure pipelines are connected to the discharge cabin, so that the high-pressure pipelines are simpler to arrange. The discharge system and the original slurry system are mutually independent, and the arrangement of an original slurry pool is not influenced. The relief valve relief system of the invention does not return the relief fluid to the mud pit, does not affect the stability of the original mud pit system, and reduces the influence on the arrangement of equipment and pipelines on the top of the mud pit. The device can simultaneously receive the discharge of various dangerous media. The safety valve discharge system solves the problem of discharge of the safety valve of the well completion pump for conveying various media, and the discharge system and the inlet system are not crossed, so that the risk of pollution to the original perfusion system is reduced. The safety valve discharge system effectively solves the problem that the mud stored in the pump cylinder of the high-pressure mud pump is not discharged when in maintenance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (6)
1. The safety valve discharge system of the high-pressure slurry pump and the well completion pump is characterized by comprising a safety valve discharge cabin (2) arranged below a bottom deck (1) of a slurry pump chamber, a sewage well (3) and a dangerous pollution discharge cabinet (4), wherein a well completion pump (5) and two parallel slurry pumps are also arranged above the bottom deck (1);
two sides of the discharge cabin (2) respectively extend out of a discharge pipeline and are connected with the completion pump (5) and the mud pump; a discharge pipeline (6) connected with the dangerous pollution discharge cabinet (4) extends from one side of the discharge cabin (2) and below the discharge pipeline; and a ventilating overflow pipe (7) extends to the upper part of the sewage well (3) from one side of the discharge cabin (2) and above the discharge pipeline.
2. The high pressure mud pump and completion pump safety valve discharge system of claim 1, wherein two discharge lines extend from both sides of said discharge chamber (2) and are connected to a safety valve discharge high pressure line and a pump cylinder service low pressure discharge line of said mud pump.
3. The high pressure mud pump and completion pump safety valve relief system of claim 2, wherein said cylinder service low pressure relief line is provided with a service relief port, said mud pump safety valve relief high pressure line is provided with a safety valve, and a discharge line communicating with said service relief port is provided above a discharge line communicating with said safety valve.
4. The high pressure mud pump and completion pump safety valve relief system as claimed in claim 1, wherein said relief line (6) is further provided with a butterfly valve (8), a gate valve (9), a pneumatic diaphragm relief pump (10) and expansion joints (11) on either side of said pneumatic diaphragm relief pump.
5. The high pressure mud pump and completion pump safety valve relief system as claimed in claim 1, wherein a fluid level sensor (12) and drilling control system (13) are located above said sub deck (1) and connected to said relief tank (2).
6. The high pressure mud pump and completion pump safety valve unloading system of claim 1, wherein a manhole cover (14) is further provided above said lower deck (1) in communication with said unloading compartment (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476772.0U CN210439997U (en) | 2019-04-10 | 2019-04-10 | Relief valve discharge system for high-pressure slurry pump and well completion pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920476772.0U CN210439997U (en) | 2019-04-10 | 2019-04-10 | Relief valve discharge system for high-pressure slurry pump and well completion pump |
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| Publication Number | Publication Date |
|---|---|
| CN210439997U true CN210439997U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920476772.0U Active CN210439997U (en) | 2019-04-10 | 2019-04-10 | Relief valve discharge system for high-pressure slurry pump and well completion pump |
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| CN (1) | CN210439997U (en) |
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