CN113309475A - Anti-riser rebound system suitable for deep water light workover and use method - Google Patents
Anti-riser rebound system suitable for deep water light workover and use method Download PDFInfo
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- CN113309475A CN113309475A CN202110799399.4A CN202110799399A CN113309475A CN 113309475 A CN113309475 A CN 113309475A CN 202110799399 A CN202110799399 A CN 202110799399A CN 113309475 A CN113309475 A CN 113309475A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000002265 prevention Effects 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 abstract description 7
- 239000003921 oil Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/002—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling
- E21B19/004—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform
- E21B19/006—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables specially adapted for underwater drilling supporting a riser from a drilling or production platform including heave compensators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a marine riser rebound prevention system suitable for deep water light workover and a use method, wherein the system comprises a rebound prevention hydraulic cylinder, a low-pressure energy accumulator, a first one-way valve, a quick-closing valve, a high-pressure energy accumulator and a second one-way valve; the anti-rebound hydraulic cylinder comprises a piston rod, a piston and a cylinder body, the piston rod drives the piston to reciprocate in the cylinder body, the upper part of the anti-rebound hydraulic cylinder is a high-pressure cavity, and the high-pressure cavity is sequentially connected with the quick-closing valve and the high-pressure energy accumulator through a first hydraulic pipeline; the lower part of the rebound prevention hydraulic cylinder is a low-pressure cavity, and one side of the low-pressure cavity is sequentially connected with the first one-way valve and the low-pressure energy accumulator through a second hydraulic pipeline; the other side of the low-pressure cavity is sequentially connected with the second one-way valve and the high-pressure accumulator through a third hydraulic pipeline. The invention can inject high-pressure hydraulic oil into the anti-rebound hydraulic cylinder, prevent the workover riser from rebounding and damaging upper equipment, and ensure the safety of operating personnel.
Description
Technical Field
The invention relates to the technical field of workover in an underwater wellhead mode of an offshore oil and gas field, in particular to a marine riser rebound prevention system suitable for deep water light workover and a using method thereof.
Background
After an oil and gas field enters the middle and later development stages, various production problems can occur along with the increase of the extraction degree and the reduction of the formation pressure, the oil and gas well needs to be maintained and repaired in the production process, and various well repair operations such as increasing injection, increasing production and the like are carried out.
When the well repairing marine riser meets extreme working weather (such as typhoon) and the dynamic positioning system has safety faults, emergency release operation needs to be carried out on the well repairing marine riser in order to ensure safety of operating personnel, system equipment and environment and avoid loss which is difficult to estimate. In such a sudden situation, the subsea workover assembly is disengaged because there is insufficient time to reduce the system top tension to schedule an orderly break-out before breaking out of the riser. After emergency release, under the effect of lifting force, the workover riser can be caused to rebound rapidly, so that equipment of the engineering ship is damaged, and even casualties occur.
Disclosure of Invention
In view of the above problems, the invention aims to provide a marine riser rebound prevention system suitable for deep water light workover and a use method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention relates to a marine riser rebound prevention system suitable for deep water light workover, which comprises a rebound prevention hydraulic cylinder, a low-pressure energy accumulator, a first one-way valve, a quick-closing valve, a high-pressure energy accumulator and a second one-way valve, wherein the hydraulic cylinder is connected with the hydraulic cylinder; the anti-rebound hydraulic cylinder comprises a piston rod, a piston and a cylinder body, the piston rod drives the piston to reciprocate in the cylinder body, the lower end of the piston rod is used for connecting a workover riser, and the upper end of the cylinder body is used for connecting an overwater workover assembly; the upper part of the anti-rebound hydraulic cylinder is a high-pressure cavity, and the high-pressure cavity is sequentially connected with the quick-closing valve and the high-pressure energy accumulator through a first hydraulic pipeline; the lower part of the rebound-prevention hydraulic cylinder is a low-pressure cavity, and one side of the low-pressure cavity is sequentially connected with the first one-way valve and the low-pressure energy accumulator through a second hydraulic pipeline; the other side of the low-pressure cavity is sequentially connected with the second one-way valve and the high-pressure accumulator through a third hydraulic pipeline.
Prevent riser resilience system, preferably, still include pressure sensor, pressure sensor set up in on the first hydraulic pressure pipeline, and be located the speed-closing valve with between the high pressure accumulator, pressure sensor is used for monitoring and prevents riser resilience system's pressure.
The anti-riser rebound system preferably further comprises an overflow valve, the overflow valve is arranged at the tail end of the first hydraulic pipeline, and the overflow valve is used for relieving the anti-riser rebound system.
The anti-riser rebound system is preferably characterized in that the quick-closing valve is an electromagnetic valve.
The invention discloses a using method of a marine riser rebound prevention system suitable for deep water light workover, which comprises the following steps:
when the engineering ship sinks, the piston of the rebound-prevention hydraulic cylinder moves upwards relatively, the low-pressure accumulator supplies liquid to a low-pressure cavity of the rebound-prevention hydraulic cylinder through the first one-way valve, the liquid in the high-pressure cavity of the rebound-prevention hydraulic cylinder flows back to the high-pressure accumulator through the quick-closing valve, the pressure in the first hydraulic pipeline is controlled not to exceed a threshold value set by a control threshold value of the pressure sensor, the liquid in the quick-closing valve flows to a stopping position, and the quick-closing valve is in an open position;
when an engineering ship rises, the piston of the rebound prevention hydraulic cylinder relatively moves downwards, the liquid of a low-pressure cavity of the rebound prevention hydraulic cylinder flows back to the high-pressure energy accumulator through the second one-way valve, the pressure in the first hydraulic pipeline is controlled not to exceed the set threshold value of the overflow valve, the liquid in the quick-closing valve flows to the stop position, and the quick-closing valve is in the open position.
The using method preferably further comprises the following steps:
under the working condition of emergency separation, the crane lifts the upper workover assembly, the safety joint is disconnected, the engineering ship is separated from the lower underwater workover assembly, the workover marine riser rapidly rebounds upwards to drive the piston of the rebound-prevention hydraulic cylinder to rapidly move upwards, the instantaneous pressure of the high-pressure cavity of the rebound-prevention hydraulic cylinder exceeds the threshold set by the pressure sensor, the liquid in the quick-closing valve flows to the closed position, the quick-closing valve is closed, the pressure of the high-pressure cavity rapidly rises to inhibit the piston from moving upwards, and therefore the rebound of the workover marine riser is controlled.
Due to the adoption of the technical scheme, the invention has the following advantages:
the invention can quickly respond to the workover riser after emergency release by identifying the change of the instantaneous pressure, thereby realizing the rebound control of the workover riser.
Drawings
FIG. 1 is a schematic structural view of the connection state of the invention and deep water light workover rig;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic structural view of the quick-closing valve of the present invention.
The figures are numbered:
1-a water well workover assembly; 2-preventing riser rebound system; 21-anti-rebound hydraulic cylinder; 211-a piston rod; 212-a piston; 213-cylinder body; 22-a low pressure accumulator; 23-a first one-way valve; 24-quick closing valve; 25-a high pressure accumulator; 26-relief valves; 27-a second one-way valve; 28-a pressure sensor; 3-repairing the well riser; 4-a safety joint; 5-an underwater workover assembly; 6-crane.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the objects, features and advantages of the invention can be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are merely intended to illustrate the spirit of the technical solution of the present invention.
As shown in fig. 1, the anti-riser rebound system suitable for deep water light workover provided by the invention is connected between an overwater workover assembly 1 and a workover riser 3, the overwater workover assembly 1 is connected with a crane 6 on an engineering ship 7, and the crane 6 has tension and heave compensation functions and is used for controlling the lifting and lowering of deep water oil and gas field light workover equipment; the lower end of the workover marine riser 3 is connected with an underwater workover assembly 5 through a safety joint 4.
As shown in fig. 2, the anti-riser rebound system suitable for deep water light workover provided by the invention comprises an anti-rebound hydraulic cylinder 21, a low-pressure accumulator 22, a first check valve 23, a quick-closing valve 24, a high-pressure accumulator 25 and a second check valve 27; the rebound-prevention hydraulic cylinder 21 comprises a piston rod 211, a piston 212 and a cylinder body 213, the piston rod 211 drives the piston 212 to reciprocate in the cylinder body 213, the lower end of the piston rod 211 is used for connecting the workover riser 3, and the upper end of the cylinder body 213 is used for connecting the overwater workover assembly 1; the upper part of the rebound-prevention hydraulic cylinder 21 is a high-pressure cavity which is sequentially connected with a quick-closing valve 24 and a high-pressure energy accumulator 25 through a first hydraulic pipeline; the lower part of the rebound-prevention hydraulic cylinder 21 is a low-pressure cavity, and one side of the low-pressure cavity is sequentially connected with a first one-way valve 23 and a low-pressure energy accumulator 22 through a second hydraulic pipeline; the other side of the low pressure chamber is connected in turn to a second check valve 27 and a high pressure accumulator 25 via a third hydraulic line.
In the above embodiment, preferably, the present invention further comprises a pressure sensor 28, the pressure sensor 28 is disposed on the first hydraulic line and located between the quick-closing valve 24 and the high-pressure accumulator 25, the pressure sensor 28 is used for monitoring the pressure of the anti-riser rebound system, and can preset a pressure value and transmit a pressure analog signal to the quick-closing valve 24 to control the opening and closing of the quick-closing valve 24.
In the above embodiment, preferably, the present invention further includes an overflow valve 26, where the overflow valve 26 is disposed at the tail end of the first hydraulic line, and the overflow valve 26 is used for depressurizing the riser rebound prevention system. When the system pressure is higher than the set pressure, the overflow valve is automatically opened, and the system safety is ensured.
In the above embodiment, as shown in fig. 3, the quick-closing valve 24 is preferably an electromagnetic valve. When the electromagnetic valve is in an open position, hydraulic oil flows to a stop position along the direction of A, B, C; when the solenoid valve is closed, hydraulic oil flows in the direction A, D, E to the off position.
As shown in fig. 1 and 2, the method for using the anti-riser rebound system suitable for deep water light workover provided by the invention comprises the following steps:
in a normal workover operation state, when the engineering ship 7 sinks, the piston 212 of the rebound prevention hydraulic cylinder 21 relatively moves upwards, the low-pressure energy accumulator 22 supplements liquid to a low-pressure cavity of the rebound prevention hydraulic cylinder 21 through the first one-way valve 23, hydraulic oil of a high-pressure cavity of the rebound prevention hydraulic cylinder 21 flows back to the high-pressure energy accumulator 25 through the quick-closing valve 24, at the moment, the pressure in a first hydraulic pipeline is controlled not to exceed a threshold value set by the control threshold value of the pressure sensor 28, hydraulic oil in the quick-closing valve 24 flows to a stop position along the direction A, B, C, and the quick-closing valve is in an open position; when the engineering ship ascends, the piston 212 of the rebound-prevention hydraulic cylinder 21 relatively descends, the low-pressure cavity liquid of the rebound-prevention hydraulic cylinder 21 returns to the high-pressure accumulator 25 through the second check valve 27, the pressure in the first hydraulic pipeline is controlled not to exceed the set threshold value of the overflow valve 26, the hydraulic oil in the quick-closing valve 24 flows to the cut-off position along the direction A, B, C, and the quick-closing valve 24 is in the open position.
Under the working condition of emergency separation, the crane 6 lifts the upper workover assembly 1, the safety joint 4 is disconnected, the engineering ship 7 is separated from the lower underwater workover assembly 5, the workover marine riser 3 rebounds upwards rapidly to drive the piston 212 of the rebound-prevention hydraulic cylinder 21 to move upwards rapidly, the instantaneous pressure of the high-pressure cavity of the rebound-prevention hydraulic cylinder 21 exceeds the threshold value set by the pressure sensor 28, hydraulic oil in the quick-closing valve 24 flows to the closed position along the direction of A, D, E, the quick-closing valve 24 is closed, the pressure of the high-pressure cavity rises rapidly to inhibit the piston 212 from moving upwards, and therefore the rebound of the workover marine riser 3 is controlled.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (6)
1. A marine riser rebound prevention system suitable for deep water light workover is characterized by comprising a rebound prevention hydraulic cylinder, a low-pressure energy accumulator, a first one-way valve, a quick-closing valve, a high-pressure energy accumulator and a second one-way valve;
the anti-rebound hydraulic cylinder comprises a piston rod, a piston and a cylinder body, the piston rod drives the piston to reciprocate in the cylinder body, the lower end of the piston rod is used for connecting a workover riser, and the upper end of the cylinder body is used for connecting an overwater workover assembly;
the upper part of the anti-rebound hydraulic cylinder is a high-pressure cavity, and the high-pressure cavity is sequentially connected with the quick-closing valve and the high-pressure energy accumulator through a first hydraulic pipeline;
the lower part of the rebound-prevention hydraulic cylinder is a low-pressure cavity, and one side of the low-pressure cavity is sequentially connected with the first one-way valve and the low-pressure energy accumulator through a second hydraulic pipeline; the other side of the low-pressure cavity is sequentially connected with the second one-way valve and the high-pressure accumulator through a third hydraulic pipeline.
2. The anti-riser rebound system of claim 1, further comprising a pressure sensor disposed on the first hydraulic line between the quick-closing valve and the high pressure accumulator, the pressure sensor being configured to monitor a pressure of the anti-riser rebound system.
3. The anti-riser rebound system of claim 2, further comprising an overflow valve disposed at a trailing end of the first hydraulic line, the overflow valve being configured to relieve the anti-riser rebound system.
4. The anti-riser rebound system of claim 3, wherein the quick-closing valve is a solenoid valve.
5. The use method of the anti-riser rebound system suitable for deep water light workover according to claim 4 is characterized by comprising the following steps:
when the engineering ship sinks, the piston of the rebound-prevention hydraulic cylinder moves upwards relatively, the low-pressure accumulator supplies liquid to a low-pressure cavity of the rebound-prevention hydraulic cylinder through the first one-way valve, the liquid in the high-pressure cavity of the rebound-prevention hydraulic cylinder flows back to the high-pressure accumulator through the quick-closing valve, the pressure in the first hydraulic pipeline is controlled not to exceed a threshold value set by a control threshold value of the pressure sensor, the liquid in the quick-closing valve flows to a stopping position, and the quick-closing valve is in an open position;
when an engineering ship rises, the piston of the rebound prevention hydraulic cylinder relatively moves downwards, the liquid of a low-pressure cavity of the rebound prevention hydraulic cylinder flows back to the high-pressure energy accumulator through the second one-way valve, the pressure in the first hydraulic pipeline is controlled not to exceed the set threshold value of the overflow valve, the liquid in the quick-closing valve flows to the stop position, and the quick-closing valve is in the open position.
6. The use of claim 5, further comprising the steps of:
under the working condition of emergency separation, the crane lifts the upper workover assembly, the safety joint is disconnected, the engineering ship is separated from the lower underwater workover assembly, the workover marine riser rapidly rebounds upwards to drive the piston of the rebound-prevention hydraulic cylinder to rapidly move upwards, the instantaneous pressure of the high-pressure cavity of the rebound-prevention hydraulic cylinder exceeds the threshold set by the pressure sensor, the liquid in the quick-closing valve flows to the closed position, the quick-closing valve is closed, the pressure of the high-pressure cavity rapidly rises to inhibit the piston from moving upwards, and therefore the rebound of the workover marine riser is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799399.4A CN113309475A (en) | 2021-07-15 | 2021-07-15 | Anti-riser rebound system suitable for deep water light workover and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110799399.4A CN113309475A (en) | 2021-07-15 | 2021-07-15 | Anti-riser rebound system suitable for deep water light workover and use method |
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| CN113309475A true CN113309475A (en) | 2021-08-27 |
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|---|---|---|---|
| CN202110799399.4A Pending CN113309475A (en) | 2021-07-15 | 2021-07-15 | Anti-riser rebound system suitable for deep water light workover and use method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060231264A1 (en) * | 2005-03-11 | 2006-10-19 | Boyce Charles B | Riserless modular subsea well intervention, method and apparatus |
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN111043111A (en) * | 2019-12-09 | 2020-04-21 | 中国海洋石油集团有限公司 | Hydraulic system for reducing axial dynamic load of floating drilling platform suspension riser |
| CN111237269A (en) * | 2020-01-20 | 2020-06-05 | 中国海洋石油集团有限公司 | Hydraulic heat dissipation system, marine riser suspension device hydraulic system and heat dissipation method |
| CN112145095A (en) * | 2020-09-25 | 2020-12-29 | 中海石油(中国)有限公司 | Emergency release device and method with tie-back function |
-
2021
- 2021-07-15 CN CN202110799399.4A patent/CN113309475A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060231264A1 (en) * | 2005-03-11 | 2006-10-19 | Boyce Charles B | Riserless modular subsea well intervention, method and apparatus |
| CN107503706A (en) * | 2017-10-12 | 2017-12-22 | 中国海洋石油总公司 | A kind of underwater well workover assembly |
| CN111043111A (en) * | 2019-12-09 | 2020-04-21 | 中国海洋石油集团有限公司 | Hydraulic system for reducing axial dynamic load of floating drilling platform suspension riser |
| CN111237269A (en) * | 2020-01-20 | 2020-06-05 | 中国海洋石油集团有限公司 | Hydraulic heat dissipation system, marine riser suspension device hydraulic system and heat dissipation method |
| CN112145095A (en) * | 2020-09-25 | 2020-12-29 | 中海石油(中国)有限公司 | Emergency release device and method with tie-back function |
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Application publication date: 20210827 |