CN109458151B - Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation - Google Patents
Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation Download PDFInfo
- Publication number
- CN109458151B CN109458151B CN201811559937.7A CN201811559937A CN109458151B CN 109458151 B CN109458151 B CN 109458151B CN 201811559937 A CN201811559937 A CN 201811559937A CN 109458151 B CN109458151 B CN 109458151B
- Authority
- CN
- China
- Prior art keywords
- section
- cutting
- sleeve
- well
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 77
- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 239000003129 oil well Substances 0.000 title claims abstract description 16
- 239000004568 cement Substances 0.000 claims abstract description 43
- 239000002002 slurry Substances 0.000 claims abstract description 36
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 10
- 238000005553 drilling Methods 0.000 description 8
- 239000002699 waste material Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/09—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods specially adapted for drilling underwater formations from a floating support using heave compensators supporting the drill string
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B29/00—Cutting or destroying pipes, packers, plugs, or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
- E21B29/002—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe
- E21B29/005—Cutting, e.g. milling, a pipe with a cutter rotating along the circumference of the pipe with a radially-expansible cutter rotating inside the pipe, e.g. for cutting an annular window
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
Abstract
The invention discloses a device for simultaneously completing the cutting, salvaging and well sealing operation of a submarine oil well, which comprises a salvaging section, a telescopic compensation section, a righting section and a cutting section which are connected from top to bottom in a threaded manner; the salvaging section is provided with a slip for locking the sleeve, and the sleeve is salvaged by the slip; the telescopic compensation section is provided with a sliding sleeve and a spline, and the length of the telescopic compensation section is automatically changed by the axial sliding of the sliding sleeve according to the fluctuation of the sea waves, so that the influence of the sea waves on the device is eliminated; simultaneously transmitting torque through the spline; the righting section is provided with a righting plate for righting the drill string, and the cutter is ensured not to be eccentric in the cutting process through the righting plate; the cutting section is provided with a cutting knife for cutting the sleeve; the sections are hollow tubular structures, and the hollow pipes of the sections jointly form a power transmission device and a cement slurry channel for well sealing. The invention has simple structure, low manufacturing cost and reliable operation. Is especially suitable for the subsea well sealing operation.
Description
Technical Field
The invention relates to a device for simultaneously completing cutting, salvaging and well sealing operation of a submarine oil well, and belongs to the technical field of submarine drilling and well sealing.
Background
With the development of offshore oil exploration and development to deep water, the protection of human beings on the marine environment increases, and the well abandonment operation is required to be carried out on abandoned offshore oil facilities, wherein the well abandonment operation firstly needs to salvage well head facilities and the sleeves and the guide pipes with a certain depth at the middle and upper parts of the abandoned well from the well so as to prevent accidents caused by collision of past ships to the abandoned oil facilities, the sleeves and the guide pipes at the sea bottom when passing through the well head. And then injecting cement paste into the waste well through grouting equipment to seal the waste well so as to prevent the oil gas accumulated in the well for a long time from flowing out of the well mouth to pollute the sea.
The well-sealing operation at the existing ground is usually carried out in two steps, wherein the first step is to cut off the casing in the oil well through a cutting and salvaging device, and salvage the casing from the oil well together with a conduit outside the casing. And the second step adopts grouting equipment to inject cement paste into the waste well to finish well sealing operation.
The cutting and salvaging equipment used on the existing ground mostly adopts a hydraulic system to drive a cutting knife or a slip of the equipment. Because the hydraulic drive system requires that the diameter of the water hole cannot be too large, a certain pressure difference can be formed in the drill rod through the section difference in order to ensure the normal operation of the cutting and salvaging equipment. Because the water hole in the drill rod of the existing equipment is very small. The water hole is the passage of cement paste when sealing. When the cement paste passes through the small water hole during well sealing, the cement paste which does not reach the preset depth is solidified, so that the cement paste cannot be injected continuously, and the well sealing quality is affected. Therefore, the existing ground well sealing equipment can only adopt a two-step well sealing mode.
The two-step well sealing mode is not suitable for the subsea well sealing operation. When the sleeve pipe is cut and the sleeve pipe and the guide pipe are salvaged from the waste well, sediment on the seabed can quickly bury the waste well mouth, and when the well sealing operation is needed, the original well mouth is difficult to find. If the drilling platform needs to get back to harbor and avoid when typhoons or rough waves are encountered, the original wellhead can not be found at all after the drilling platform gets back, and only the well sealing can be abandoned. Thus, the accumulated oil gas in the well for a long time can possibly flow out of the wellhead to pollute the sea.
The ocean well sealing and land well sealing also have the drilling platform floating on the sea surface, and are influenced by sea waves, the drilling platform can fluctuate along with the sea waves, meanwhile, the drilling string is driven to also fluctuate, and the cutting position of the cutting knife can be influenced by the fluctuation of the drilling string. Therefore, the prior art can not meet the operation requirement of the submarine well sealing.
Disclosure of Invention
The invention aims to provide a device for simultaneously completing cutting, fishing and well sealing operation of a submarine oil well, which can cut off a sleeve by one-time drilling, salvage the sleeve and a conduit from the well, and simultaneously inject cement paste into the well to complete the well sealing operation when lifting a drill rod; not only can meet the requirements of the subsea well sealing operation, but also can greatly improve the efficiency of the subsea well sealing operation and reduce the energy consumption, thereby overcoming the defects of the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention discloses a device for simultaneously completing the cutting, salvaging and well sealing operation of a submarine oil well, which comprises a salvaging section, a telescopic compensation section, a righting section and a cutting section which are connected from top to bottom in a threaded manner; the salvaging section, the telescopic compensating section, the righting section and the cutting section are hollow pipe structures and form a cement slurry channel together; the cutting section is used for cutting the underground casing; the fishing section is used for fishing the cut casing from the well; the centralizing section is used for preventing the cutting knife from cutting the sleeve; the telescopic compensation section ensures power transmission and simultaneously eliminates the influence of sea wave fluctuation on the device.
In the device, the salvaging section comprises a cement slurry channel formed by an upper joint of the salvaging section, a middle cylinder and a lower joint of the salvaging section, which are in threaded connection from top to bottom; the outer circle of the cement slurry channel is provided with a J-shaped groove cylinder, an adjusting cylinder and an elastic sleeve which are in threaded connection from top to bottom; the J groove drum is connected with the upper joint of the salvaging section in a bayonet way; the outer circle of the adjusting cylinder is provided with a positioning ring; the lower end of the elastic sleeve is provided with a slip; the outer circle of the lower joint of the salvaging section is provided with a clamping cone; the slips are controlled by the clamping cone to outwards expand and lock the sleeve or inwards shrink to unlock the sleeve.
In the device, the telescopic compensation section comprises a compensation section upper joint; the lower end of the upper joint of the compensation section is in threaded connection with the lower limit sleeve; the outer circle of the upper joint of the compensation section is in sliding connection with the sliding sleeve through a spline; the upper end of the sliding sleeve is in threaded connection with the upper limit sleeve; the lower end of the sliding sleeve is in threaded connection with the lower joint of the compensation section; the length of the telescopic compensation section automatically stretches along with the change of sea waves through the sliding between the upper joint of the compensation section and the lower joint of the compensation section; simultaneously, the telescopic compensation section transmits torque through the spline; and inner holes in the middle of the upper joint of the compensation section and the lower joint of the compensation section are cement slurry channels.
In the device, the righting section comprises a connecting pipe with two ends respectively connected with the telescopic compensation section and the cutting section, and a group of righting blades uniformly distributed along the circumference are arranged in the middle of the outer circle of the connecting pipe; the inner pipe of the connecting pipe is used as a power transmission channel and a cement slurry channel.
In the foregoing apparatus, the cutting section comprises an outer tube; the upper end of the outer tube is connected with an upper joint of the cutting section; the upper end of the outer tube is connected with the lower joint of the cutting section; the outer tube is provided with a group of cutters uniformly distributed along the circumference, and the cutters are hinged with the outer tube; a piston is arranged in the outer tube, and the outer circle of the piston is in sliding connection with the inner hole of the outer tube; the outer circle of the piston is in transmission connection with the cutter through a tooth key and a tooth slot; when the piston slides downwards in the outer tube and rotates, the piston drives the cutter to open outwards to tightly prop against the inner wall of the sleeve, and meanwhile, the sleeve is cut; the lower end of the upper joint of the cutting section is connected with the ball seat through a pin; when the sleeve is cut off by the cutter, the steel ball is thrown into the ball seat to close the flow limiting hole channel on the piston, the pin is sheared by cement slurry pressure, the ball seat moves downwards to open the bypass channel, so that the pressure at the upper end and the lower end of the piston reach balance, the piston is pushed to move upwards under the action of the spring at the bottom of the piston, and the cutter is contracted into the cutter groove of the outer tube.
By adopting the technical scheme, the working process of the cutting knife adopts a purely mechanical driving mode of matching the clamping key and the J-shaped groove to replace a hydraulic driving mode in the prior art, thereby greatly expanding the through flow of a cement slurry channel and slowing down the solidification time of the cement slurry in the channel. Thus, the device can be matched with a submarine salvage well sealing device to drill down once and complete the sleeve cutting of a submarine oil well, the salvage of the sleeve and the guide pipe and the well sealing operation of the oil well. Compared with the prior art, the method solves the technical problems that the prior well bore is difficult to find or cannot be found when the well is drilled down again to perform well sealing operation after the well bore is buried by the seabed sediment after the well is drilled. The invention has simple structure, is economical and practical, and can reduce the labor and energy consumption of repeated tripping. The method also avoids pollution to the ocean caused by long-time accumulated oil gas in the well returning out of the wellhead because the well is directly abandoned after the well cannot be found, and can also prevent accidents caused by collision of ships with abandoned petroleum facilities on the sea floor when passing through. The invention has the characteristics of simple structure, low manufacturing cost and reliable operation.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Marked in the figure as: 1-sleeve, 2-cement slurry channel, 3-steel ball, 10-salvage section, 11-slip, 12-salvage section upper joint, 13-middle tube, 14-salvage section lower joint, 15-J groove tube, 16-adjusting tube, 17-elastic sleeve, 18-positioning ring, 19-clip cone, 20-telescopic compensation section, 21-sliding sleeve, 22-spline, 23-compensation section upper joint, 24-lower limit sleeve, 25-upper limit sleeve, 26-compensation section lower joint, 30-centralizing section, 31-centralizing plate, 32-connecting tube, 40-cutting section, 41-cutting knife, 42-outer tube, 43-cutting section upper joint, 44-cutting section lower joint, 45-piston, 46-pin, 47-ball seat, 48-limiting hole, 49-spring.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The device for simultaneously completing the cutting, salvaging and well sealing operation of the submarine oil well comprises a salvaging section 10, a telescopic compensation section 20, a righting section 30 and a cutting section 40 which are connected by screw threads from top to bottom as shown in fig. 1; the salvaging section 10 is provided with a slip 11 for locking the casing 1, and the casing 1 is salvaged by the slip 11; the telescopic compensation section 20 is provided with a sliding sleeve 21 and a spline 22, and the length of the telescopic compensation section 20 is automatically changed by the axial sliding of the sliding sleeve 21 according to the fluctuation of the sea waves, so that the influence of the sea waves on the device is eliminated; while the telescopic compensating section 20 transmits torque through the spline 22; the centralizing section 30 is provided with a centralizing plate 31 for centralizing the drill string, and the centralizing plate 31 ensures that the cutter is not eccentric in the cutting process; the cutting section 40 is provided with a cutter 41 for cutting the sleeve 1; the sections are hollow tubular structures, and the hollow pipes of the sections jointly form the power transmission of the device and the cement slurry channel 2 for well sealing. The fishing segment 10 comprises a cement slurry channel 2 formed by a fishing segment upper joint 12, a middle cylinder 13 and a fishing segment lower joint 14 which are connected in a threaded manner from top to bottom; the outer circle of the cement slurry channel 2 is provided with a J-shaped groove drum 15, an adjusting drum 16 and an elastic sleeve 17 which are in threaded connection from top to bottom; the J-shaped groove drum 15 and the upper joint 12 of the fishing segment are connected in a bayonet way; the outer circle of the adjusting cylinder 16 is provided with a positioning ring 18; the lower end of the elastic sleeve 17 is provided with a slip 11; the outer circle of the lower joint 14 of the salvaging section is provided with a clamping cone 19; the slips 11 are controlled by the clamping cone 19 to expand outwards to lock the sleeve 1 or shrink inwards to unlock the sleeve 1. The telescopic compensation section 20 comprises a compensation section upper joint 23; the lower end of the compensation section upper joint 23 is in threaded connection with the lower limit sleeve 24; the outer circle of the upper joint 23 of the compensation section is connected with the sliding sleeve 21 in a sliding way through the spline 22; the upper end of the sliding sleeve 21 is in threaded connection with an upper limit sleeve 25; the lower end of the sliding sleeve 21 is in threaded connection with the lower joint 26 of the compensation section; the length of the telescopic compensating section 20 automatically stretches along with the change of sea waves through the sliding between the upper compensating section joint 23 and the lower compensating section joint 26; while the telescopic compensating section 20 transmits torque through the spline 22; the inner hole between the upper joint 23 of the compensation section and the lower joint 26 of the compensation section is a cement slurry channel 2. The righting segment 30 comprises a connecting pipe 32 with two ends respectively connected with the telescopic compensation segment 20 and the cutting segment 40, and a group of righting blades 31 uniformly distributed along the circumference are arranged in the middle of the outer circle of the connecting pipe 32; the inner tube of the connecting tube 32 serves as both the power transmission and the cement slurry channel 2. The cutting section 40 includes an outer tube 42; the upper end of the outer tube 42 is connected with a cutting section upper joint 43; the upper end of the outer tube 42 is connected with a lower joint 44 of the cutting section; the outer tube 42 is provided with a group of cutters 41 which are uniformly distributed along the circumference, and the cutters 41 are hinged with the outer tube 42; a piston 45 is arranged in the outer tube 42, and the outer circle of the piston 45 is in sliding connection with the inner hole of the outer tube 42; the outer circle of the piston 45 is in transmission connection with the cutter 41 through a tooth key and a tooth slot; when the piston 45 slides downwards in the outer tube 42 and rotates, the piston 45 drives the cutter 41 to open outwards to tightly press the inner wall of the sleeve 1, and simultaneously, the cutting of the sleeve 1 is completed; the lower end of the upper joint 43 of the cutting section is connected with a ball seat 47 through a pin 46; after the sleeve 1 is cut off by the cutter 41, the steel ball 3 is thrown into the ball seat 47 to close the flow limiting hole 48 channel on the piston 45, the pin 46 is sheared by cement slurry pressure, the ball seat 47 moves downwards to open the bypass channel, the pressure at the upper end and the lower end of the piston 45 reach balance, the piston 45 is pushed to move upwards under the action of the spring 49 at the bottom of the piston 45, and the cutter 41 is contracted into the cutter groove of the outer tube 42.
Examples
The device for simultaneously completing the cutting, salvaging and well sealing operation of the submarine oil well is shown in fig. 1. The device of this example can be divided into a fishing segment 10, a telescopic compensation segment 20, a righting segment 30 and a cutting segment 40 from top to bottom. The head and the tail of each section are connected into a whole through threads.
The salvage section 10 is responsible for salvage operation in the well sealing process, after the lower end of the salvage section 10 enters the casing, the positioning ring 18 is located at the top end of the casing to play a role in positioning, and the positioning ring 18 can be adjusted according to the position of the clamping groove in the casing 1. The casing 1 is clamped by clamping the slips 11 of the fishing segment 10 into the clamping grooves of the casing 1.
The cutting section 40 is responsible for cutting the casing 1 off before the well is closed off. The cutters 21 of the cutting section 40 are pressed by the cement slurry to open the cutters 21, and the drill string cutters 21 are rotated to cut the casing 1. After cutting is completed, the steel balls are put into the cutting section 40 to additionally form a cement slurry channel, so that cement slurry can additionally form a cement slurry channel between the piston 45 and the outer tube 42 to perform well sealing operation. While the piston 45 moves upward to retract the cutter 21 into the cutter pocket of the outer tube 42.
The telescopic compensation section 20 ensures that the cutter 21 cannot fluctuate along with the sea waves in the process of cutting the sleeve 1 through the change of the length of the telescopic compensation section, so that the cutter 21 is always cut at the same position, and the cutting process is not affected.
The centralizing section 30 serves to centralize the drill string so that the cutters 21 are not eccentric during the cutting process.
The working process and principle of the invention are described as follows:
after the device of the invention is put into an oil well, the sleeve 1 is clamped by the slips 11 on the fishing segment 10. The casing 1 is then cut by rotating the drill string by pressing the cement slurry to expand the cutters 41 on the cutting section 40 outwards. The expansion compensation section 20 can automatically counteract the fluctuation of the drill string during the cutting process, so that the cutting knife is always kept at the same position. The centralizing leg 30 centers the drill string so that the cutters 41 do not become eccentric when cutting. When the casing is cut off, the steel ball 3 is put into the cement slurry channel of the drill string, after the steel ball 3 falls into the hole of the ball seat 47 of the cutting section 40, the flow limiting hole 48 channel in the cutting state is closed, the other channel cement slurry between the piston 45 and the outer tube 42 is opened in the descending process of the piston 45, the cement slurry does not pass through the flow limiting hole 48 channel any more, and the cutter 41 automatically withdraws into the cutter groove of the outer tube 42. Since the newly opened cement slurry passage flow area is much larger than the flow area of the cut restrictor orifice 48, cement slurry can be passed through. At this time, the well-sealing operation can be completed by injecting cement slurry into the cement slurry passage while lifting the cut casing 1 upward.
By adopting the technical scheme, the working process of the cutting knife adopts a purely mechanical driving mode of matching the clamping key and the J-shaped groove to replace a hydraulic driving mode in the prior art, thereby greatly expanding the through flow of a cement slurry channel and slowing down the solidification time of the cement slurry in the channel. Thus, the device can be matched with a submarine salvage well sealing device to drill down once and complete the sleeve cutting of a submarine oil well, the salvage of the sleeve and the guide pipe and the well sealing operation of the oil well. Compared with the prior art, the method solves the technical problems that the prior well bore is difficult to find or cannot be found when the well is drilled down again to perform well sealing operation after the well bore is buried by the seabed sediment after the well is drilled. The invention has simple structure, is economical and practical, and can reduce the labor and energy consumption of repeated tripping. The method also avoids pollution to the ocean caused by long-time accumulated oil gas in the well returning out of the wellhead because the well is directly abandoned after the well cannot be found, and can also prevent accidents caused by collision of ships with abandoned petroleum facilities on the sea floor when passing through. The invention has the characteristics of simple structure, low manufacturing cost and reliable operation.
Claims (3)
1. The utility model provides a device of completion seabed oil well cutting salvage and well sealing operation simultaneously which characterized in that: the device comprises a salvaging section (10), a telescopic compensation section (20), a righting section (30) and a cutting section (40) which are connected through threads from top to bottom; the salvaging section (10), the telescopic compensating section (20), the righting section (30) and the cutting section (40) are hollow pipe structures and form a cement slurry channel (2) together; the cutting section (40) is used for cutting the underground casing (1); the fishing section (10) is used for fishing the cut casing; the centralizing section (30) is used for preventing the cutting knife from cutting the sleeve (1); the telescopic compensation section (20) ensures power transmission and simultaneously eliminates the influence of sea wave fluctuation on the device; the telescopic compensation section (20) comprises a compensation section upper joint (23); the lower end of the upper joint (23) of the compensation section is in threaded connection with the lower limit sleeve (24); the outer circle of the upper joint (23) of the compensation section is connected with the sliding sleeve (21) in a sliding way through a spline (22); the upper end of the sliding sleeve (21) is in threaded connection with the upper limit sleeve (25); the lower end of the sliding sleeve (21) is in threaded connection with a lower joint (26) of the compensation section; the length of the telescopic compensation section (20) automatically stretches along with the change of sea waves through the sliding between the upper joint (23) of the compensation section and the lower joint (26) of the compensation section; simultaneously, the telescopic compensation section (20) transmits torque through the spline (22); the inner holes in the middle of the upper joint (23) and the lower joint (26) of the compensation section are cement slurry channels (2); the cutting section (40) comprises an outer tube (42); the upper end of the outer tube (42) is connected with an upper joint (43) of the cutting section; the upper end of the outer tube (42) is connected with a lower joint (44) of the cutting section; the outer tube (42) is provided with a group of cutters (41) which are uniformly distributed along the circumference, and the cutters (41) are hinged with the outer tube (42); a piston (45) is arranged in the outer tube (42), and the outer circle of the piston (45) is in sliding connection with the inner hole of the outer tube (42); the excircle of the piston (45) is in transmission connection with the cutter (41) through a tooth key and a tooth slot; when the piston (45) slides downwards in the outer tube (42) and rotates, the piston (45) drives the cutter (41) to open outwards to tightly prop against the inner wall of the sleeve (1), and meanwhile, the sleeve (1) is cut; the lower end of the upper joint (43) of the cutting section is connected with a ball seat (47) through a pin (46); after the sleeve (1) is cut off by the cutter (41), the steel ball (3) is thrown into the ball seat (47) to close a flow limiting hole (48) channel on the piston (45), the pin (46) is sheared by cement slurry pressure, the ball seat (47) moves downwards to open a bypass channel, the pressure at the upper end and the lower end of the piston (45) is balanced, the piston (45) is pushed to move upwards under the action of a spring (49) at the bottom of the piston (45), and the cutter (41) is contracted into a cutter groove of the outer tube (42).
2. The apparatus for simultaneously completing subsea well cutting fishing and well sealing operations according to claim 1, wherein: the salvage section (10) comprises a cement slurry channel (2) formed by a salvage section upper joint (12), a middle cylinder (13) and a salvage section lower joint (14) which are connected through screw threads from top to bottom; the excircle of the cement slurry channel (2) is provided with a J-shaped groove cylinder (15), an adjusting cylinder (16) and an elastic sleeve (17) which are in threaded connection from top to bottom; the J groove drum (15) and the upper joint (12) of the salvaging section are connected in a bayonet way; the outer circle of the adjusting cylinder (16) is provided with a positioning ring (18); the lower end of the elastic sleeve (17) is provided with a slip (11); the outer circle of the lower joint (14) of the salvaging section is provided with a clamping cone (19); the slips (11) are controlled to expand outwards to lock the sleeve (1) or shrink inwards to unlock the sleeve (1) through the clamping cone (19).
3. The apparatus for simultaneously completing subsea well cutting fishing and well sealing operations according to claim 1, wherein: the centering section (30) comprises a connecting pipe (32) with two ends respectively connected with the telescopic compensation section (20) and the cutting section (40), and a group of centering blades (31) uniformly distributed along the circumference are arranged in the middle of the outer circle of the connecting pipe (32); the inner pipe of the connecting pipe (32) is used as a power transmission channel and a cement slurry channel (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559937.7A CN109458151B (en) | 2018-12-19 | 2018-12-19 | Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811559937.7A CN109458151B (en) | 2018-12-19 | 2018-12-19 | Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109458151A CN109458151A (en) | 2019-03-12 |
| CN109458151B true CN109458151B (en) | 2024-04-09 |
Family
ID=65613887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811559937.7A Active CN109458151B (en) | 2018-12-19 | 2018-12-19 | Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109458151B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198042B (en) * | 2021-07-26 | 2024-01-02 | 中海油能源发展股份有限公司 | Ball throwing type cutting and fishing integrated tool and application method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0911805D0 (en) * | 2008-07-09 | 2009-08-19 | Smith International | Methods of making multiple casing cuts |
| CN205503073U (en) * | 2016-02-17 | 2016-08-24 | 辽河石油勘探局 | Horizontal well can move back can interior cutting device of formula of dragging for |
| CN206016739U (en) * | 2016-08-31 | 2017-03-15 | 李钰 | Drilling tool is reclaimed in a kind of deep water well head system cutting |
| CN206205835U (en) * | 2016-10-25 | 2017-05-31 | 深圳市远东石油钻采工程有限公司 | A kind of telescopic compensator for hanging cutting tool under water |
| CN207436983U (en) * | 2017-10-11 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of oil pipe hydraulic cuts fishing tool |
| CN207960555U (en) * | 2018-02-27 | 2018-10-12 | 中石化石油工程技术服务有限公司 | A kind of fishing sleeve milling integrated apparatus |
| CN209838357U (en) * | 2018-12-19 | 2019-12-24 | 贵州高峰石油机械股份有限公司 | Device for simultaneously completing cutting, salvaging and sealing operation of submarine oil well |
-
2018
- 2018-12-19 CN CN201811559937.7A patent/CN109458151B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0911805D0 (en) * | 2008-07-09 | 2009-08-19 | Smith International | Methods of making multiple casing cuts |
| CN205503073U (en) * | 2016-02-17 | 2016-08-24 | 辽河石油勘探局 | Horizontal well can move back can interior cutting device of formula of dragging for |
| CN206016739U (en) * | 2016-08-31 | 2017-03-15 | 李钰 | Drilling tool is reclaimed in a kind of deep water well head system cutting |
| CN206205835U (en) * | 2016-10-25 | 2017-05-31 | 深圳市远东石油钻采工程有限公司 | A kind of telescopic compensator for hanging cutting tool under water |
| CN207436983U (en) * | 2017-10-11 | 2018-06-01 | 中国石油化工股份有限公司 | A kind of oil pipe hydraulic cuts fishing tool |
| CN207960555U (en) * | 2018-02-27 | 2018-10-12 | 中石化石油工程技术服务有限公司 | A kind of fishing sleeve milling integrated apparatus |
| CN209838357U (en) * | 2018-12-19 | 2019-12-24 | 贵州高峰石油机械股份有限公司 | Device for simultaneously completing cutting, salvaging and sealing operation of submarine oil well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109458151A (en) | 2019-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2020034643A1 (en) | Drilling process of pressure-preserving cable core drilling machine for subsea natural gas hydrates | |
| US3722585A (en) | Apparatus for aligning and connecting underwater flowlines | |
| US3797255A (en) | Under-water anchor apparatus and methods of installation | |
| CN106761593B (en) | A kind of bad ground pretreating process | |
| US3703212A (en) | Method of rock drilling and apparatus for use therein | |
| CN209687445U (en) | A kind of device being completed at the same time seabed Casing-Cutting and capping operation | |
| CN102296950B (en) | Hydraulic shearing type sampling drilling tool | |
| CN109441386A (en) | A kind of device being completed at the same time seabed Casing-Cutting and capping operation | |
| CN201963231U (en) | Subsea mud suction system for realizing riser-free mud recovery drilling | |
| US3252528A (en) | Method of drilling from a fully floating platform | |
| MX2013010147A (en) | Expansion cone assembly for setting a liner hanger in a wellbore casing. | |
| US3546885A (en) | Threaded pile for marine structure | |
| CA2890269C (en) | Drilling and grouting method and apparatus | |
| NO333069B1 (en) | Method of cementing a borehole | |
| CN209838357U (en) | Device for simultaneously completing cutting, salvaging and sealing operation of submarine oil well | |
| CN109458151B (en) | Device for simultaneously completing submarine oil well cutting, fishing and well sealing operation | |
| CN109505557B (en) | Device for simultaneously completing fishing and well sealing operation of submarine oil well | |
| CN109763784B (en) | Split bridge plug hydraulic setting tool and setting method thereof | |
| CN100575659C (en) | A kind of insufficient balance well completion method | |
| CN111472689A (en) | Expansion suspension type tail pipe drilling operation device and operation method | |
| GB1359961A (en) | Underwater anchor apparatus and methods of installation | |
| CN112112588A (en) | Press-in type rope coring drilling tool and coring process method thereof | |
| CN116838277A (en) | Impact press-in type rope coring drilling device and process | |
| US3332492A (en) | Casing cutting system | |
| CN209761384U (en) | Device for simultaneously completing fishing and sealing operations of submarine oil well |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |