CN101139912A - Deepwater drilling apparatus with automatic-upending subaqueous blow-out preventer - Google Patents
Deepwater drilling apparatus with automatic-upending subaqueous blow-out preventer Download PDFInfo
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- CN101139912A CN101139912A CNA2007101212924A CN200710121292A CN101139912A CN 101139912 A CN101139912 A CN 101139912A CN A2007101212924 A CNA2007101212924 A CN A2007101212924A CN 200710121292 A CN200710121292 A CN 200710121292A CN 101139912 A CN101139912 A CN 101139912A
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Abstract
The invention relates to a deep-water well-drilling device with an underwater blowout preventer being able to automatically strengthen the body resistance, which is characterized by comprising a water separation tube connected with a well-drilling platform, an upper flexible connector arranged in the center of the water separation tube, and a stretching ring arranged on the water separation tube; one end of 4 to 6 stretching ropes is respectively fixed on the well-drilling platform; the other ends are respectively linked to the stretching ring; the water separation tube is put through a floating bilge and connected with a blowout preventer; top end of the floating bilge is positioned with an escape device; a ballast bilge is arranged below the blowout preventer; an upper well opening is positioned between the blowout preventer and the ballast bilge; the top end linked to a stress connector to strengthen the body resister is deeply embedded into a central shaft hole on the ballast bilge and connected with the well opening; the bottom end of the stress connector is connected with a high-pressure water separation tube; a float block is arranged outside the high-pressure water separation tube; the bottom end of the high-pressure water separation tube is connected in sequence with a lower flexible connector, a lower well opening, a vessel and a sleeve pipe; the sleeve pipe is anchored onto the ocean bed; at least one screw propeller is arranged on the circumference of the blowout preventer. The invention is characterized by high suitability and convenience in fulfilling separation of the water separation tube, for which the invention can be widely utilized in deep-water well-drilling.
Description
Technical Field
The invention relates to an offshore oil drilling device, in particular to a deepwater drilling device with an automatic centering underwater blowout preventer.
Background
Deepwater drilling rigs are summarized in three categories, including conventional drilling rigs that position a blowout preventer (BOP) at the subsea mudline, drilling rigs that position a blowout preventer in the water, and drilling rigs that position a blowout preventer above water.
Conventional drilling rigs place blowout preventers on the seafloor and the drilling vessel and subsea wellhead are connected with a riser. As water depths increase, the drilling of conventional subsea blowout preventers presents significant challenges. On the one hand, as the water depth increases, longer risers and drill pipes are required, thereby consuming more mud, higher pressure grade equipment, and the weight and size of the risers and blowout preventers increase greatly, so that sufficient deck load and deck space must be available to store the required risers, drill pipes, casing, and other bulk materials to meet the requirements of drilling operations, and larger operating equipment must be available to meet the requirements of equipment removal. On the other hand, the water depth is increased, the severe deep water operation environment is intensified, so that the riser, the casing and the drill rod can be taken down for a long time, particularly, under the emergency situations of typhoon and the like, the riser is difficult to separate, the non-production time of drilling is increased, the requirement on the reliability of equipment is improved, the deep water drilling platform presents the trend of large scale, various indexes including deck variable load, platform main scale, load capacity, material storage capacity and the like are developed to large scale, the cost of drilling operation is greatly increased on one hand, and great risk is brought to the deep water drilling operation.
In order to overcome the disadvantages of the conventional deep water drilling apparatus in which a blowout preventer is installed underwater, a surface blowout preventer System (SBOP) in which the blowout preventer is installed on water has been developed in recent years. Drilling installations in which blowout preventers are located on the water include surface blowout preventers, high pressure risers, subsea Disconnect Systems (SIDs), and control systems for these components, among others. The main advantage of a drilling rig with a blowout preventer on water is that a small, light riser can be used, enabling an inexpensive third generation drill ship to enter deep water, thereby greatly reducing the costs of deep water operations. However, the drilling device with the blowout preventer arranged on the water also has the defects of the drilling device, because the blowout preventer is above the water surface and cannot be separated from a drilling ship, a marine riser is difficult to separate in an emergency, the marine riser is greatly limited by sea conditions and geological conditions when the drilling device is used, and the drilling device can only be used at a well position with better sea conditions and clearer stratum conditions.
In addition, norwegian ADTH company proposed an artificial seabed drilling system (ABS system) in which a buoy having a diameter of 20 m and a height of 10 m was installed underwater at a position of 250 m, a wellhead and a blowout preventer were mounted on the buoy, and the lower part of the buoy was connected to a return pipe (outer diameter 22 inches). Therefore, the evacuation can be facilitated, the requirements on the drilling ship can be reduced, and the cheap third-generation drilling ship can enter deep water with the assistance of the auxiliary operation ship. However, such ABS systems suffer from the following disadvantages: 1. because of the influence of the stress state of the system, the ABS system cannot bear too large flow velocity, and the buoy is arranged under water at a deeper depth (250-300 meters), so that the requirement on the system is high, and the operation is not convenient. 2. The large size of the buoy (approximately 20 meters in diameter and 10 meters in height) is due to the large weight of the buoy itself (379.1 tons) and the need to withstand all the weight of the blowout preventer and lower return pipe, which is necessary to provide sufficient buoyancy. 3. Due to the large size of the buoy, the installation is time consuming, the manufacturing costs are high, the water depth used is limited, and the maximum water depth is 1500 m. 4. The blowout preventer is directly seated on the buoy, and the weight of the blowout preventer is large, so that the gravity center of a system formed by the buoy and the blowout preventer is higher, the stability of the system is poor, and the safety, the operation and the like of the system are greatly influenced.
Disclosure of Invention
In view of the above problems, the present invention aims to provide a deep water drilling device with an automatic-righting underwater blowout preventer, which has the advantages of good stability, strong applicability, low cost and applicability in deeper sea areas.
In order to realize the purpose, the invention adopts the following technical scheme: the utility model provides a deep water drilling equipment with automatic preventer of rightting in water which characterized in that: it includes a riser of being connected with drilling platform, the centre of riser sets up one and goes up flexible joint, set up a tight ring on the riser, 4 ~ 6 one end of tensioning rope is fixed respectively on the drilling platform, the other end is connected respectively on the tight ring, the riser passes a buoyancy tank and is connected with a preventer, buoyancy tank upper end sets up a disengaging gear, the below of preventer sets up a ballast tank, preventer with be an upper portion well head between the ballast tank, the upper end of a stress joint who is connected with the centralizer is deepened in the ballast tank center pin hole with the upper portion well head is connected, a high pressure riser is connected to the lower extreme of stress joint, the high pressure riser outside is provided with the buoyancy piece, and flexible joint, lower part well head, pipe and sleeve pipe under the bottom of high pressure riser connects gradually, the sleeve pipe is fixed in the seabed, is provided with a spiral propeller in the circumference of preventer at least.
The spiral propeller is a ducted propeller or a Z-shaped ducted propeller;
the diameter of the propeller is calculated according to the following formula:
the power of the propeller is calculated according to the following formula:
wherein D is the diameter of the propeller;
F p is the thrust of the propeller, F p ＝K p (1-t)ρD 4 n 2 ；
K p If the thrust coefficient is a dimensionless thrust coefficient, the thrust coefficient of the system is 0.37 when the system is not blocked by checking the graph;
t is a thrust attenuation coefficient without dimension, and is 0.04 in a mooring state;
rho is the density of seawater and is 1025kg/m 3 ；
n is the rotating speed of the propeller and is preset;
p is the absorbed power of the thruster in the mooring state;
zeta is the Bendemann static thrust factor and the zeta value of a ducted propeller in the moored state can be approximately equal to 1.
The buoyancy cabin is a long and thin cylindrical sealed metal barrel, a central shaft hole longitudinally penetrating through the buoyancy cabin is formed in the central axis of the metal barrel, and a plurality of sealed cabins are arranged inside the buoyancy cabin.
The ballast tank is an oval sealed metal sphere, the central axis of the ballast tank is provided with a central shaft hole which longitudinally penetrates through the ballast tank, and a plurality of sealed chambers are arranged inside the ballast tank.
The blowout preventer is positioned 80-100 m below the water surface.
The high pressure riser has an outer diameter of 16".
And the emergency shut-off device is arranged between the lower flexible joint and the lower wellhead.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the blowout preventer is arranged 80-100 m below the water surface, so that underwater operation can be facilitated, and the buoyancy requirement on equipment is lowered. 2. According to the invention, at least one spiral propeller is arranged in the circumferential direction of the ballast tank to serve as an automatic centering device, so that the transverse displacement of a buoyancy system and a blowout preventer can be reduced, the mechanical property of the system is improved, the adaptability of the system is improved, and the operation window is increased. 3. The invention divides a buoyancy barrel in the prior art into two buoyancy barrels arranged above and below the blowout preventer, namely the buoyancy chamber and the ballast chamber, so that the gravity center of the whole system including the buoyancy chamber, the blowout preventer and the ballast chamber can be effectively reduced, the stability and the adaptability of the system are improved, and the effects of reducing the sizes of the upper buoy and the lower buoy and breaking through the water depth limit can be realized. 4. According to the characteristic that the connection part of the upper wellhead and the high-pressure marine riser is the weakest link in the system, the invention is provided with the stress joint, thereby effectively improving the mechanical property of the invention, reducing the maximum stress of the system and improving the applicability of the whole system. 5. The invention adopts the small-diameter high-pressure marine riser with the outer diameter of 16' and adds the buoyancy block sleeved on the high-pressure marine riser outside the high-pressure marine riser, thereby reducing the buoyancy required by the lower buoy to lift the lower high-pressure marine riser and playing a great role in breaking through the limit of water depth. The invention has the advantages of strong applicability, good performance, low cost, convenient underwater operation and the like, can overcome the problem of difficult separation of a marine riser in a surface blowout preventer System (SBOP), overcomes the defects of an artificial seabed drilling system (ABS), and can be widely applied to various deepwater drilling processes.
Drawings
FIG. 1 is a schematic structural view of the present invention
FIG. 2 is a partial schematic view of the present invention
FIG. 3 is a block diagram of a propeller control system of the present invention
FIG. 4 is a schematic view of the buoyancy chamber structure of the present invention
FIG. 5 is a schematic view of the external structure of the ballast tank of the present invention
FIG. 6 is a schematic view of the internal structure of the ballast tank of the present invention
FIG. 7 is a schematic illustration of the invention in a situation where the ballast tank is towed in place during installation
FIG. 8 is a schematic view of the present invention controlling ballast tank underwater positioning operations during installation
FIG. 9 is a schematic view of the present invention controlling ballast tank underwater positioning operation during installation
Detailed Description
The present invention will be described in detail below with reference to the drawings and examples.
As shown in fig. 1 and 2, the invention comprises a conventional riser 2 connected with a drilling platform 1, an upper flexible joint 3 is connected in the middle of the riser 2, a tension ring 4 is arranged on the riser 2, one end of 4-6 tension ropes 5 is respectively fixed on the drilling platform 1, and the other end is respectively connected with the tension ring 4. The riser 2 penetrates through a buoyancy chamber 6 to be connected with a blowout preventer 7, the upper end of the buoyancy chamber 6 is provided with a separation device 8 connected with the riser 2, and the blowout preventer 7 is arranged at the upper part of a ballast tank 9. An upper wellhead 10 is positioned between the blowout preventer 7 and the ballast tank 9 and is hung in a central shaft hole of the ballast tank 9, the upper end of a stress joint 11 extends into the central shaft hole of the ballast tank 9 and is connected with the upper wellhead 10, and a centralizer 12 is arranged between the stress joint 11 and the wall of the central shaft hole of the ballast tank 9. The lower end of the stress joint 11 is connected with a high-pressure riser 13, the exterior of the high-pressure riser 13 is sleeved with a buoyancy block 14, the lower end of the high-pressure riser 13 is sequentially connected with a lower flexible joint 15, an emergency shut-off device 16 (optional or not available), a lower wellhead 17, a guide pipe 18 and a sleeve pipe 19 according to a conventional method, and the guide pipe 18 and the sleeve pipe 19 are fixed on the seabed.
In order to reduce the transverse displacement of a buoyancy system (namely the buoyancy tank 6 and the ballast tank 9) and a blowout preventer 7, improve the mechanical property of the system, improve the adaptability of the system and increase the operation window, the invention arranges two spiral propellers 20 as a centering device in the circumferential direction of the ballast tank 9, and the number of the propellers 20 can be one or more than two, so that two propellers are generally used more simply and stably. Once the buoyancy system (i.e. the buoyancy chamber 6 and the ballast chamber 9) and the blowout preventer 7 are displaced laterally, a thrust force in the opposite direction is generated by the thruster, which returns the blowout preventer 7 to its original position.
The propeller 20 may be a conventional ducted propeller, a Z-type ducted propeller, or a special propeller with a combined rudder and propeller, and the propeller is characterized in that: the retreating thrust and the advancing thrust are basically the same, the control system drives the vertical shaft connecting the guide pipe and the propeller hub to rotate 360 degrees in the horizontal direction through the worm mechanism, the propeller rotates left and right to generate the lateral thrust, the rudder can be used, the advancing and retreating conversion is rapid, and the control performance is good.
The size and power of the propeller 20 adopted by the invention are calculated according to the following formulas 1 and 2, when the ballast tank 9 is in a zero-speed state, the apparent efficiency of the propeller 20 is zero:
wherein the rotational speed n of the propeller 20 is generally already given;
d is the diameter of the propeller;
F p thrust of the propeller, F p ＝K p (1-t)ρD 4 n 2 ；
K p The thrust coefficient is a dimensionless thrust coefficient, and the thrust coefficient of the system is 0.37 when no blocking exists;
t is a thrust attenuation coefficient without dimension, and is 0.04 in a mooring state;
rho is the density of the seawater, and is 1025kg/m 3 ；
P is the absorption power of the thruster in the mooring state;
zeta is the Bendemann static thrust factor and the zeta value of a ducted propeller in the moored state can be approximately equal to 1.
The propeller 20 is regulated by a propeller control system (shown in fig. 3) which includes: 1. a doppler current meter 21 for measuring the current velocity and direction of the ocean current at the ballast tank 9, a signal amplifier 22, a controller 23, an actuator 26 for controlling the motor speed 24 and the tiller orientation 25, which actuator 26 is connected to and controls the propeller 20. When the propeller 20 runs, the magnitude and the direction of ocean current at the ballast tank 9 are measured by the Doppler current meter 21, the information of the magnitude of the ocean current is used for controlling the rotating speed of the motor, so that the magnitude of the output force of the propeller is controlled, and the information of the direction of the ocean current can be used for controlling the steering engine and controlling the direction of the propeller force.
The arrangement of the Z-shaped ducted propellers on both sides of the ballast tank 9 has more advantages: firstly, the ducted propeller has high rotating speed and small diameter, so that a speed reducing mechanism with a large transmission ratio can be omitted, the ducted propeller is convenient to arrange, and the ducted propeller plays a role in protecting the propeller. Secondly, ducted propellers that work in this regime may exhibit high operational benefits, as they are most suitable for the zero and ultra low speed conditions of the ballast tank 9 in terms of their hydrodynamic characteristics. In general, if the propeller does not need to rotate 360 degrees, it is also conceivable to provide ordinary ducted propellers on both sides of the ballast tank 9, the ordinary ducted propellers being formed by attaching a wing-shaped cross-sectional circular duct, also called a coriolis duct, to the outer edge of the propeller, the duct being connected to a rotating rudder post and also functioning as a rudder blade, called a turnable duct. The guide pipe can improve the propelling efficiency of the propeller, because the flow velocity inside the guide pipe is high, the pressure inside and outside the guide pipe is low, additional thrust is formed on the pipe wall by the pressure difference inside and outside the guide pipe, the clearance between the guide pipe and the propeller blades is small, the streaming loss of the propeller blade tips is limited, and the guide pipe can reduce the wake flow shrinkage behind the propeller, so that the energy loss is reduced.
In the above described embodiment the upper flexible joint 3, the riser 2, the disconnecting device 8 are the same as in a conventional deepwater drilling installation, the function of the disconnecting device 8 being to disconnect the riser 2 from the lower installation by means of the disconnecting device 8 when required. The lower flexible joint 15 and the lower wellhead 17 are both parts used in conventional deepwater drilling installations, and the emergency shut-off device 16, which is arranged near the mud line, may increase the safety of the system of the present invention in case of emergency. The emergency shut-off device 16 can be selected from the market according to the actual need. The invention may also be provided without the emergency shutdown device 16, as the case may be.
In the above embodiment, the specific model of the stress joint 11 needs to be selected according to specific sea conditions, and the relevant calculation and analysis shows that the position of the stress joint 11 is a weak link of the whole device, and the stress joint 11 is added here, so that the maximum stress of the system can be reduced, the mechanical property of the device is improved, and the applicability of the device is improved.
In the above embodiment, as shown in fig. 4, the buoyancy chamber 6 may be an elongated cylindrical sealed metal barrel 61, the central axis of which has a central axial hole 62 longitudinally penetrating the buoyancy chamber 6, the central axial hole 62 being adapted for the conventional riser 2 of the drilling device to pass through; the interior of the buoyancy compartment 6 is divided into a plurality of mutually sealed compartments 63, if each individual compartment 63 is damaged, the buoyancy compartment 6 can still provide enough buoyancy, and the buoyancy provided by the buoyancy compartment 6 mainly bears the weight of the blowout preventer 7.
In the above embodiment, as shown in fig. 5 and 6, the ballast tank 9 is an oval sealed metal sphere 91, the central axis of which has a central axial hole 92 longitudinally penetrating through the ballast tank 9, the upper wellhead 10 of the drilling device can be hung in the upper opening of the central axial hole 92, and the upper end of the stress adapter 11 can be inserted into the central axial hole 92 from the lower opening of the central axial hole 92 to be connected with the upper wellhead 10. The ballast tank 9 is divided into a plurality of chambers 93 which are sealed from each other, and when one of the chambers 93 is broken, the ballast tank 9 can still provide sufficient buoyancy. The ballast tank 9 houses a conventional set of ballast systems (not shown) which are connected to the control system of the rig 1 via an umbilical to control the ballast tank 9 for ballasting. The buoyancy provided by the ballast tank 9 mainly bears the weight of the upper wellhead 10 and part of the high pressure riser 13 in the drilling installation, and in addition the ballast tank 9 also provides an interface with the high pressure riser 13.
In the above embodiment, the buoyancy of the buoyancy tank 6 and the ballast tank 9 is coordinated with the weight of the blowout preventer 7, etc., so that the center of gravity of the buoyancy tank 6, the blowout preventer 7 and the ballast tank 9 is the lowest, and the stability is the best, thereby further expanding the operation window of the present invention. The high-pressure riser 13 adopts a small-diameter high-pressure riser with an outer diameter of 16 ″, so that the requirement on a buoyancy system of the device can be reduced, and the buoyancy block 14 with a small diameter is additionally arranged outside the high-pressure riser 13, so that the high-pressure riser can conveniently pass through the buoyancy chamber 6 and the ballast chamber 9. The high-pressure riser 13 with the outer diameter 16' has a small specification and is provided with the buoyancy block 14, so that the lifting force of the buoyancy system to the high-pressure riser 13 at the lower part of the buoyancy system can be reduced.
During installation, the device of the invention firstly uses the operating ship 27 to tow the ballast tank 9 into position (as shown in fig. 7), then one end of the vertical chain 28 on the ballast tank 9 is connected to the second operating ship 27 (as shown in fig. 8), then the two operating ships 27 and the vertical chain 28 are used to control the ballast tank 9 to submerge under the drilling platform, the stress joint 11, the high-pressure marine riser 13, the buoyancy block 14, the lower flexible joint 15, the emergency shut-off device 16 and the like are sequentially submerged, the ballast tank 9 and the lower device are together lowered to a position 80-100 meters below the sea surface A (as shown in fig. 1 and 9) through the two operating ships 27 and the vertical chain 28, the device is connected with the lower wellhead 17, the conduit 18, the casing 19 and the like, then the disconnecting device 8, the buoyancy tank 6 and the blowout preventer 7 are together lowered to the underwater wellhead 8 through the marine riser 2, the blowout preventer 7 is connected with the upper wellhead 8 and is seated on the ballast tank 9, the flexible joint 3 and the like are connected, and installation of the system is completed, and the drilling operation is started.
The device can be separated from operation emergently when meeting the emergency situations such as typhoon and the like in the using process. When detachment is required, the apparatus of the invention may be detached from the detachment device 8 and the riser 2 removed. At the same time, the emergency shut-off device 16 at the mud line can also be shut off.
Claims (9)
1. The utility model provides a deep water drilling device with automatic well straightening subaqueous preventer which characterized in that: it includes a riser of being connected with drilling platform, the centre of riser sets up one and goes up flexible joint, set up a straining ring on the riser, 4 ~ 6 the one end of tensioning rope is fixed respectively on the drilling platform, the other end is connected respectively on the straining ring, the riser passes a buoyancy tank and is connected with a preventer, buoyancy tank upper end sets up a disengaging gear, the below of preventer sets up a ballast tank, the preventer with be an upper portion well head between the ballast tank, the upper end of a stress joint who is connected with the centralizer is deepened in the ballast tank central shaft hole with the upper portion well head is connected, a high pressure riser is connected to the lower extreme of stress joint, high pressure riser outside is provided with the buoyancy piece, and flexible joint, lower part well head, pipe and sleeve pipe under the bottom of high pressure riser connects gradually, the sleeve pipe is fixed in the seabed the circumference of preventer is provided with a helical propulsor at least.
2. The deepwater drilling assembly with the self-righting underwater blowout preventer of claim 1, wherein: the spiral propeller is a ducted propeller or a Z-shaped ducted propeller;
the diameter of the propeller is calculated according to the following formula:
the power of the propeller is calculated according to the following formula:
wherein D is the diameter of the propeller;
F p is the thrust of the propeller, F p ＝K p (1-t)ρD 4 n 2 ；
K p The thrust coefficient is a dimensionless thrust coefficient, and the thrust coefficient of the system is 0.37 when the system is not blocked by checking the graph;
t is a thrust attenuation coefficient without dimension, and is 0.04 in a mooring state;
rho is the density of the seawater, and is 1025kg/m 3 ；
n is the rotating speed of the propeller and is preset;
p is the absorbed power of the thruster in the mooring state;
zeta is the Bendemann static thrust factor and the zeta value of a ducted propeller in the moored state can be approximately equal to 1.
3. The deepwater drilling assembly with the self-righting underwater blowout preventer of claim 1, wherein: the buoyancy cabin is a long and thin cylindrical sealed metal barrel, a central shaft hole longitudinally penetrating through the buoyancy cabin is formed in the central axis of the metal barrel, and a plurality of sealed cabins are arranged inside the buoyancy cabin.
4. The deepwater drilling assembly with the self-righting underwater blowout preventer of claim 2, wherein: the buoyancy cabin is a long and thin cylindrical sealed metal barrel, a central shaft hole longitudinally penetrating through the buoyancy cabin is formed in the central axis of the metal barrel, and a plurality of sealed cabins are arranged inside the buoyancy cabin.
5. The deepwater drilling assembly with the self-righting underwater blowout preventer as claimed in claim 1, 2, 3 or 4, wherein: the ballast tank is an oval sealed metal sphere, the central axis of the ballast tank is provided with a central shaft hole which longitudinally penetrates through the ballast tank, and a plurality of sealed cabins are arranged inside the ballast tank.
6. The deepwater drilling assembly with the self-righting underwater blowout preventer as claimed in claim 1, 2, 3 or 4, wherein: the blowout preventer is positioned 80-100 m below the water surface.
7. The deepwater drilling assembly with the self-righting underwater blowout preventer of claim 5, wherein: the blowout preventer is positioned 80-100 m below the water surface.
8. The deepwater drilling device with the self-righting underwater blowout preventer of claims 1 to 7, wherein: the high pressure riser has an outer diameter of 16".
9. The deepwater drilling device with the automatic centralizing underwater blowout preventer of claims 1 to 8, wherein: and the emergency shut-off device is arranged between the lower flexible joint and the lower wellhead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101212924A CN101139912A (en) | 2007-09-03 | 2007-09-03 | Deepwater drilling apparatus with automatic-upending subaqueous blow-out preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101212924A CN101139912A (en) | 2007-09-03 | 2007-09-03 | Deepwater drilling apparatus with automatic-upending subaqueous blow-out preventer |
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| CN101139912A true CN101139912A (en) | 2008-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101212924A Pending CN101139912A (en) | 2007-09-03 | 2007-09-03 | Deepwater drilling apparatus with automatic-upending subaqueous blow-out preventer |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082888A1 (en) * | 2007-12-27 | 2009-07-09 | China National Offshore Oil Corporation | Submarine device |
| CN101818627A (en) * | 2010-04-20 | 2010-09-01 | 中国海洋石油总公司 | Safety device of floating drilling platform on sea during typhoon or hurricane |
| CN104179463A (en) * | 2014-07-09 | 2014-12-03 | 燕山大学 | Deep water well drilling marine riser vertical device |
| CN104373069A (en) * | 2014-11-04 | 2015-02-25 | 中国石油天然气股份有限公司 | Propeller type downhole instrument propelling device |
| CN112253035A (en) * | 2020-10-09 | 2021-01-22 | 盐城市荣嘉机械制造有限公司 | Well drilling blowout prevention structure and device thereof |
-
2007
- 2007-09-03 CN CNA2007101212924A patent/CN101139912A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009082888A1 (en) * | 2007-12-27 | 2009-07-09 | China National Offshore Oil Corporation | Submarine device |
| US8899333B2 (en) | 2007-12-27 | 2014-12-02 | China National Offshore Oil Corporation | Submarine device |
| CN101818627A (en) * | 2010-04-20 | 2010-09-01 | 中国海洋石油总公司 | Safety device of floating drilling platform on sea during typhoon or hurricane |
| CN104179463A (en) * | 2014-07-09 | 2014-12-03 | 燕山大学 | Deep water well drilling marine riser vertical device |
| CN104179463B (en) * | 2014-07-09 | 2016-01-27 | 燕山大学 | Deep Water Drilling Riser vertical means |
| CN104373069A (en) * | 2014-11-04 | 2015-02-25 | 中国石油天然气股份有限公司 | Propeller type downhole instrument propelling device |
| CN112253035A (en) * | 2020-10-09 | 2021-01-22 | 盐城市荣嘉机械制造有限公司 | Well drilling blowout prevention structure and device thereof |
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