CN111764846B - Rotary casing running device matched with electric top drive and using method thereof - Google Patents
Rotary casing running device matched with electric top drive and using method thereof Download PDFInfo
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- CN111764846B CN111764846B CN202010512932.XA CN202010512932A CN111764846B CN 111764846 B CN111764846 B CN 111764846B CN 202010512932 A CN202010512932 A CN 202010512932A CN 111764846 B CN111764846 B CN 111764846B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims abstract description 117
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 230000001154 acute effect Effects 0.000 claims abstract description 36
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 24
- 239000010985 leather Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- E21B19/16—Connecting or disconnecting pipe couplings or joints
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
- E21B19/164—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe motor actuated
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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
- E21B19/10—Slips; Spiders ; Catching devices
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
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Abstract
本发明涉及石油天然气钻井领域，公开了与电动顶驱配套使用的旋转下套管装备及其使用方法，包括上半轴、中间轴和下半轴；上半轴的外壁设有驱动机构；中间轴的外壁设有传动机构，传动机构包括第一传动连杆、第二传动连杆和第三传动连杆；第一锐角端置于驱动机构内；第二锐角端铰接于第二传动连杆的一端和第一锐角部，第二传动连杆的另一端铰接于中间轴；第二传动连杆由分杆构成，钝角端铰接于分杆的铰接处，第二锐角部铰接于中间轴的外壁；所述中间轴外壁靠近第二传动连杆处还设有弧形壳体，弧形壳体内壁设有封挡块，封挡块内部设有卡瓦，卡瓦与第三锐角部连接；本发明可有效提高套管的下入效率、降低人工成本与劳动强度，保障固井作业顺利实施。
The invention relates to the field of oil and natural gas drilling, and discloses a rotary casing lowering equipment used in conjunction with an electric top drive and a method of using the same, comprising an upper half shaft, an intermediate shaft and a lower half shaft; The outer wall of the shaft is provided with a transmission mechanism, and the transmission mechanism includes a first transmission link, a second transmission link and a third transmission link; the first acute angle end is placed in the driving mechanism; the second acute angle end is hinged to the second transmission link one end and the first acute angle part, the other end of the second transmission link is hinged to the intermediate shaft; the second transmission link is composed of a sub-rod, the obtuse-angle end is hinged to the hinge of the sub-rod, and the second acute angle part is hinged to the intermediate shaft. The outer wall; the outer wall of the intermediate shaft is also provided with an arc-shaped casing near the second transmission link, the inner wall of the arc-shaped casing is provided with a sealing block, and a slip is arranged inside the sealing block, and the slip is connected with the third acute angle part The invention can effectively improve the running efficiency of the casing, reduce the labor cost and labor intensity, and ensure the smooth implementation of the cementing operation.
Description
Technical Field
The invention relates to a rotary casing running device matched with an electric top drive and a using method thereof, belonging to the field of petroleum and natural gas drilling.
Background
Well cementation is an important part in the well construction process of oil and gas wells, and the smooth and safe running-in of a well cementation sleeve is a premise of forming a well barrier and guaranteeing the safety of a well. The casing running operation needs to use special casing running auxiliary equipment, the transmission mechanical elevator has low operation efficiency, more operators and high labor intensity of workers, the problems of wrong buckling and collision buckling exist, and the sealing integrity of the casing thread is damaged. In addition, for a long horizontal section and a highly-deviated well, the friction resistance between the casing and the well wall is increased due to the self-weight of the casing and other factors, the running difficulty is increased continuously, and even the casing cannot be run.
The existing casing running-in equipment mainly comprises a mechanical type and a hydraulic type, and a traditional mechanical casing running tool is characterized in that a set of mechanical slips is arranged on a top drive hanging ring and used for fixing a casing. The hydraulic casing running tool is designed with a special hydraulic action mechanism, the slips are driven to open and hold tightly by utilizing the hydraulic action, but the existing hydraulic casing running tool does not have a standby emergency locking mechanism, and once the hydraulic action fails, the casing cannot be subjected to remedial locking, so that serious accidents such as casing falling and the like exist, and the operation efficiency and safety are seriously reduced.
Therefore, a high-efficiency, stable and highly-automated device for casing running equipment for improving the difficulty of the existing casing running operation is needed to be researched.
Disclosure of Invention
The invention aims to: the device is matched with the electric top drive, so that the running-in efficiency of the casing can be effectively improved, the labor cost and the labor intensity are reduced, and the smooth implementation of well cementation operation is ensured.
In order to achieve the above purpose, the invention adopts the technical scheme that:
the rotary lower casing equipment matched with the electric top drive comprises an upper half shaft, a middle shaft and a lower half shaft which are sequentially connected from top to bottom;
the outer wall of the upper half shaft is provided with a driving mechanism;
the outer wall of the intermediate shaft is provided with a transmission mechanism, and the transmission mechanism comprises a first transmission connecting rod, a second transmission connecting rod and a third transmission connecting rod;
the first acute angle end of the first transmission connecting rod is arranged in the driving mechanism so as to enable the first transmission connecting rod to slide obliquely; the second acute angle end is hinged to one end of the second transmission connecting rod and the first acute angle part of the third transmission connecting rod at the same time, and the other end of the second transmission connecting rod is hinged to the outer wall of the intermediate shaft; the second transmission connecting rod is composed of two groups of branch rods which are hinged with each other, the obtuse-angle end of the first transmission connecting rod is hinged at the hinged position of the two groups of branch rods, and the second acute-angle part of the third transmission connecting rod is hinged on the outer wall of the intermediate shaft;
the department that the jackshaft outer wall is close to second transmission connecting rod still is equipped with the arc casing, the bottom inner wall of arc casing is equipped with and seals the dog, it is equipped with the slips to seal inside clearance department of dog, the slips is connected with the third acute angle portion of third transmission connecting rod.
The working principle is as follows: when the operation is implemented, a hydraulic system is started, a piston rod in a hydraulic cylinder moves downwards to push a transmission bearing group to move downwards, a pressing block connected with the transmission bearing group is driven to move downwards along a guide slide rail, the pressing block moves downwards, and meanwhile, a first acute angle end of a first transmission connecting rod moves to a position close to the guide slide rail along an oblique slide groove, so that a hinge point of a second acute angle end, which is hinged with one end of a second transmission connecting rod and a first acute angle part of a third transmission connecting rod, rotates clockwise by taking the hinge point as an original point, and drives the second acute angle part to rotate clockwise, and further drives a slip arranged at the tail end of the third transmission connecting rod to open, at the moment, the hinge point of the obtuse angle end of the first transmission connecting rod and a hinge point of the branch rods rotates anticlockwise by taking the hinge point as the original point, and two branch rods of the; the electric top drive is inserted into the sleeve by matching with the crown block, and the sleeve touches the anti-collision rubber upwards as the insertion stopping depth;
then, the hydraulic system is started again, the piston rod in the hydraulic cylinder moves upwards to the top dead center to drive the pressing block to move upwards along the guide slide rail, and the first acute angle end of the first transmission connecting rod moves to a position far away from the guide slide rail along the oblique slide groove while the pressing block moves upwards, thereby causing the hinge point of the second acute angle end, one end of the second transmission connecting rod and the first acute angle part of the third transmission connecting rod to rotate anticlockwise by taking the hinge point as an original point and simultaneously driving the second acute angle part to rotate anticlockwise, the slip arranged at the tail end of the third transmission connecting rod is driven to clamp the sleeve, at the moment, the hinge point of the obtuse-angle end of the first transmission connecting rod and the branch rods rotates clockwise by taking the hinge point as an original point, the two branch rods of the second transmission connecting rod recover to a straight state at the hinge point, and the whole transmission mechanism is locked, so that the slip forms stable clamping on the sleeve;
finally, buckling is carried out by utilizing an electric top drive rotating sleeve, and a crown block is used for lowering the sleeve string; after the casing pipe is put in, the hydraulic system is started again, the slips are opened, the crown block is used for lifting the top drive and the tool, preparation is made for the next casing pipe to be connected, and the process is repeated.
Furthermore, the driving mechanism comprises a hydraulic cylinder and a transmission bearing group, a pressing block is connected to the bottom end of the transmission bearing group, a guide slide rail is arranged on the outer wall of the upper half shaft close to the middle shaft, so that the pressing block can slide up and down in the guide slide rail, an inclined slide groove is arranged inside the pressing block, and the first acute angle end is arranged in the inclined slide groove.
Furthermore, an upper cover plate and a lower cover plate are respectively arranged at the top and the bottom of the hydraulic cylinder, an upper end cover and a first self-aligning thrust bearing are arranged on the outer wall of the upper half shaft close to the upper cover plate, and the tail end of the first self-aligning thrust bearing is pressed against the upper cover plate;
a boss is arranged on the outer wall of the upper half shaft close to the bottom end of the hydraulic cylinder, a second self-aligning thrust bearing is arranged on the boss, and the tail end of the second self-aligning thrust bearing is pressed against the lower cover plate;
the design of the upper cover plate and the lower cover plate is convenient for the first self-aligning thrust bearing and the second self-aligning thrust bearing to stably fix the driving mechanism on the outer wall of the upper half shaft, so that when the driving mechanism moves, only the piston rod moves up and down, and other components of the driving mechanism are relatively static, thereby ensuring the operation accuracy and safety;
the inner ends of the first self-aligning thrust bearing and the second self-aligning thrust bearing are fixed on the outer wall of the upper half shaft, the outer sides of the first self-aligning thrust bearing and the second self-aligning thrust bearing are pressed against the upper cover plate and the lower cover plate, and a connecting line between one end of the first self-aligning thrust bearing and one end of the second self-aligning thrust bearing, which are connected to the outer wall of the upper half shaft, and one end of the first self-aligning thrust bearing and one end of the second self-aligning thrust bearing, which are pressed against the upper cover plate and the lower cover plate, forms a certain included angle with the axis of the upper half shaft, so that the operation stability and the safety of the hydraulic cylinder are improved; the design of boss is convenient for install second aligning thrust bearing, improves bearing capacity, improves the security.
Further, a piston rod in the hydraulic cylinder is in threaded connection with the transmission bearing group.
Furthermore, the intermediate shaft comprises an installation part and a sleeve part, and the end face of the installation part, which is close to the sleeve part, is also provided with anti-collision rubber. The installation department is close to the upper half axle, and the sleeve part is close to lower half axle, and wherein the outer wall of installation department installs the arc casing, second transmission connecting rod and third transmission connecting rod, and crashproof rubber locates and is close to installation department and sleeve part junction.
Furthermore, the outer wall of the arc-shaped shell is provided with a through hole which is convenient for the transmission mechanism to move. When the transmission mechanism is in different motion states, the maximum radius of the outer wall of the transmission mechanism can be changed, and then the transmission mechanism is abutted against the arc-shaped shell, so that the normal operation of the transmission mechanism is ensured by the design of the through hole, the transmission mechanism is convenient to replace, and the application range is expanded.
Furthermore, a sealing leather cup is arranged at the bottom end of the lower half shaft.
Furthermore, a locking ring is further arranged at the position, close to the upper end cover, of the upper half shaft. The design of locking ring is implemented the installation spacing to first self-aligning thrust bearing, further fixes actuating mechanism, improves job stabilization nature and security.
Further, the use method of the rotary casing running equipment matched with the electric top drive comprises the following steps:
1) the lower end of a main shaft of the electric top drive device is connected with a rotary lower sleeve device;
2) starting a hydraulic cylinder, pushing a pressing block to move downwards by the hydraulic cylinder, further driving a transmission mechanism, and opening a slip;
3) a sealing leather cup at the lower end of the rotary lower casing pipe device is used for righting the casing pipe so that the lower half shaft is inserted into the casing pipe until the casing pipe upwards contacts the anti-collision rubber;
4) starting the hydraulic cylinder again, pushing the pressing moving block to move upwards by the hydraulic cylinder, and further driving the transmission mechanism to enable the slips to form stable clamping on the sleeve;
5) the electric top drive device is used for rotating the sleeve to implement upper buckling, and the crown block is used for implementing lower entering of the sleeve;
6) after the sleeve is completely lowered, the hydraulic cylinder is started again, the slips are opened, and the electric top drive device and the rotary sleeve lowering equipment are lifted through the crown block;
7) repeating the steps 1) -6) until all the casings are connected and lowered to the bottom of the well.
The invention has the beneficial effects that:
(1) the hydraulic energy storage mode is adopted to ensure stable clamping of the sleeve, mechanical locking is implemented by using the transmission rod mechanism while hydraulic locking is performed, stable locking of the sleeve can be ensured after hydraulic pressure fails due to accidents, and operation safety is improved;
(2) the invention can meet the requirements of running in operation of sleeves with different specifications by replacing the transmission mechanism, improves the applicability of the tool and saves the cost.
Drawings
FIG. 1 is a block diagram of the present invention;
FIG. 2 is a first motion profile view of the present invention;
FIG. 3 is a second cross-sectional view of the present invention in a kinematic state;
in the figure: 1-an upper half shaft, 2-an intermediate shaft, 21-a mounting part, 22-a sleeve part, 3-a lower half shaft, 4-a driving mechanism, 41-a hydraulic cylinder, 42-a transmission bearing set, 43-a pressing block, 44-a guide slide rail, 45-an oblique slide groove, 5-a transmission mechanism, 51-a first transmission connecting rod, 511-a first acute angle end, 512-a second acute angle end, 513-an obtuse angle end, 52-a second transmission connecting rod, 521-a branch rod, 53-a third transmission connecting rod, 531-a first acute angle part, 532-a second acute angle part, 533-a third acute angle part, 6-an arc shell, 7-a sealing block, 8-slips, 9-an upper cover plate, 10-a lower cover plate, 11-an upper end cover plate and 12-a first thrust bearing, 13-boss, 14-second self-aligning thrust bearing, 15-anti-collision rubber, 16-through hole, 17-sealing leather cup and 18-locking ring.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The rotary casing running device matched with the electric top drive comprises an upper half shaft 1, an intermediate shaft 2 and a lower half shaft 3 which are fixedly connected from top to bottom in sequence, as shown in figures 1-3;
the outer wall of the upper half shaft 1 is provided with a driving mechanism 4, the driving mechanism 4 comprises a hydraulic cylinder 41 and a transmission bearing group 42, a piston rod in the hydraulic cylinder 41 is in threaded connection with the transmission bearing group 42, the top and the bottom of the hydraulic cylinder 41 are respectively and fixedly connected to the upper cover plate 9 and the lower cover plate 10 through bolts, the outer wall of the upper half shaft 1, which is close to the upper cover plate 9, is provided with an upper end cover 11 and a first self-aligning thrust bearing 12, and the tail end of the first self-aligning thrust bearing 12 is pressed against the upper cover plate 9; the upper half shaft 1 is also provided with a locking ring 18 near the upper end cover 11. The design of the locking ring 18 limits the installation of the first self-aligning thrust bearing 12; a boss 13 is arranged on the outer wall of the upper half shaft 1 and close to the bottom end of the hydraulic cylinder 41, a second self-aligning thrust bearing 14 is arranged on the boss 13, and the tail end of the second self-aligning thrust bearing 14 is pressed against the lower cover plate 10;
the design of the upper cover plate 9 and the lower cover plate 10 is convenient for the first self-aligning thrust bearing 12 and the second self-aligning thrust bearing 14 to stably fix the driving mechanism 4 on the outer wall of the upper half shaft 1, so that the operation accuracy and safety are ensured; the inner ends of the first self-aligning thrust bearing 12 and the second self-aligning thrust bearing 14 are fixed on the outer wall of the upper half shaft 1, the outer sides of the first self-aligning thrust bearing 12 and the second self-aligning thrust bearing 14 are pressed against the upper cover plate 9 and the lower cover plate 10, and a connecting line between one end of the outer wall of the upper half shaft 1 and one end of the upper cover plate 9 and one end of the lower cover plate 10 is in a certain included angle with the axis of the upper half shaft 1, so that the operation stability and the safety of the hydraulic cylinder 41 are improved; the design of boss 13 is convenient for install second self-aligning thrust bearing 14, improves bearing capacity, improves the security.
The bottom end of the transmission bearing group 42 is connected with a pressing block 43 through a bolt, a guide slide rail 44 is arranged on the outer wall of the upper half shaft 1 close to the middle shaft 2, so that the pressing block 43 can only slide up and down along the axial direction, and an inclined slide groove 45 is arranged inside the pressing block 43;
the outer wall of the intermediate shaft 2 is provided with a transmission mechanism 5, and the transmission mechanism 5 comprises a first transmission connecting rod 51, a second transmission connecting rod 52 and a third transmission connecting rod 53;
the first acute angle end 511 of the first transmission connecting rod 51 is arranged in the inclined sliding groove 45, the second acute angle end 512 is hinged to one end of the second transmission connecting rod 52 and the first acute angle part 531 of the third transmission connecting rod 53 at the same time, and the other end of the second transmission connecting rod 52 is hinged to the outer wall of the intermediate shaft 2; the second transmission connecting rod 52 is composed of two groups of branch rods 521 which are hinged with each other, the obtuse-angle end 513 of the first transmission connecting rod 51 is hinged at the hinge joint of the two groups of branch rods 521, and the second acute-angle part 532 of the third transmission connecting rod 53 is hinged on the outer wall of the intermediate shaft 2;
an arc-shaped shell 6 is connected to the outer wall of the intermediate shaft 2 close to the second transmission connecting rod 52 through a bolt, a sealing stop block 7 is connected to the inner wall of the bottom of the arc-shaped shell 6 through a bolt, a slip 8 is installed in a gap inside the sealing stop block 7, the slip 8 is connected with a third acute angle portion 533 of a third transmission connecting rod 53, and a sealing leather cup 17 is further arranged at the bottom end of the lower half shaft 3;
the intermediate shaft 2 comprises a mounting part 21 and a sleeve part 22, and the end surface of the mounting part 21 close to the sleeve part 22 is also provided with an anti-collision rubber 15. The mounting part 21 is close to the upper half shaft 1, the sleeve part 22 is close to the lower half shaft 3, the arc-shaped shell 6, the second transmission connecting rod 52 and the third transmission connecting rod 53 are mounted on the outer wall of the mounting part 21, and the anti-collision rubber 15 is arranged close to the connecting part of the mounting part 21 and the sleeve part 22;
the outer wall of the arc-shaped shell 6 is provided with a through hole 16 which is convenient for the transmission mechanism 5 to move. When the transmission mechanism 5 is in different motion states, the maximum radius of the outer wall of the transmission mechanism can be changed, and the transmission mechanism is abutted against the arc-shaped shell 6, so that the design of the through hole 16 ensures the normal operation of the transmission mechanism 5, the transmission mechanism 5 can be conveniently replaced, and the application range is expanded.
The use method of the rotary casing running equipment matched with the electric top drive comprises the following steps:
1) the lower end of a main shaft of the electric top drive device is connected with a rotary lower sleeve device;
2) starting the hydraulic cylinder 41, wherein the hydraulic cylinder 41 pushes the pressing block 43 to move downwards so as to drive the transmission mechanism 5, and the slips 8 are opened;
3) righting the casing by utilizing a sealing leather cup 17 at the lower end of the rotary casing setting device so as to insert the lower half shaft 3 into the casing until the casing upwards contacts the anti-collision rubber 15;
4) starting the hydraulic cylinder 41 again, wherein the hydraulic cylinder 41 pushes the pressing block 43 to move upwards so as to drive the transmission mechanism 5, so that the slip 8 forms stable clamping on the casing;
5) the electric top drive device is used for rotating the sleeve to implement upper buckling, and the crown block is used for implementing lower entering of the sleeve;
6) after the casing is completely lowered, the hydraulic cylinder 41 is started again, the slips 8 are opened, and the electric top drive device and the rotary casing lowering equipment are lifted through the crown block;
7) repeating the steps 1) -6) until all the casings are connected and lowered to the bottom of the well.
The working principle is as follows: when the operation is performed, the hydraulic system is started, the piston rod in the hydraulic cylinder 41 moves downwards to push the transmission bearing set 42 to move downwards, the pressing block 43 connected with the transmission bearing set is driven to move downwards along the guide slide rail 44, the first acute-angle end 511 of the first transmission connecting rod 51 moves to a position close to the guide slide rail 44 along the inclined slide groove 45 while the pressing block 43 moves downwards, and causes the hinge point where the second acute-angled end 512 is hinged to both one end of the second transmission link 52 and the first acute-angled portion 531 of the third transmission link 53 to rotate clockwise with the hinge point as the origin, and simultaneously drives the second acute-angled portion 532 to rotate clockwise, further, the slip 8 arranged at the tail end of the third transmission connecting rod 53 is driven to open, at this time, the hinge point of the obtuse-angle end 513 of the first transmission connecting rod 51 and the branch rod 521, which is hinged with each other, rotates counterclockwise by taking the hinge point as an origin, and the two branch rods 521 of the second transmission connecting rod 52 form an obtuse angle at the hinge point; the electric top drive is inserted into the sleeve by matching with the crown block, and the sleeve upwards touches the anti-collision rubber 15 as the insertion stopping depth;
then, the hydraulic system is started again, the piston rod in the hydraulic cylinder 41 moves upwards to the top dead center, the pressing block 43 is driven to move upwards along the guide slide rail 44, while the pressing block 43 moves upwards, the first acute angle end 511 of the first transmission link 51 moves to a position far away from the guide slide rail 44 along the inclined slide groove 45, and then the hinge point where the second acute angle end 512 is hinged with one end of the second transmission link 52 and the first acute angle portion 531 of the third transmission link 53 rotates anticlockwise with the hinge point as an origin, and simultaneously drives the second acute angle portion 532 to rotate anticlockwise, and further drives the slip 8 arranged at the tail end of the third transmission link 53 to perform a clamping action on the casing pipe, at this time, the hinge point where the obtuse angle end 513 of the first transmission link 51 is hinged with the branch lever 521 rotates clockwise with the hinge point as an origin, the two branch levers 521 of the second transmission link 52 recover to a flat state at the hinge point, and further form a lock on the whole transmission mechanism 5, so that the slip 8 forms a stable clamping on the casing;
finally, buckling is carried out by utilizing an electric top drive rotating sleeve, and a crown block is used for lowering the sleeve string; after the casing pipe is run in, the hydraulic system is started again, the slips 8 are opened, the crown block is used for lifting the top drive and the tool, preparation is made for the next casing pipe to be connected, and the process is repeated.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The rotary casing running equipment matched with the electric top drive is characterized by comprising an upper half shaft (1), an intermediate shaft (2) and a lower half shaft (3) which are sequentially connected from top to bottom;
the outer wall of the upper half shaft (1) is provided with a driving mechanism (4);
the outer wall of the intermediate shaft (2) is provided with a transmission mechanism (5), and the transmission mechanism (5) comprises a first transmission connecting rod (51), a second transmission connecting rod (52) and a third transmission connecting rod (53);
the first acute angle end (511) of the first transmission connecting rod (51) is arranged in the driving mechanism (4) so as to enable the first acute angle end to slide obliquely; the second acute angle end (512) is hinged to one end of the second transmission connecting rod (52) and the first acute angle part (531) of the third transmission connecting rod (53) at the same time, and the other end of the second transmission connecting rod (52) is hinged to the outer wall of the intermediate shaft (2); the second transmission connecting rod (52) is composed of two groups of branch rods (521) which are hinged with each other, the obtuse-angle end (513) of the first transmission connecting rod (51) is hinged at the hinged position of the two groups of branch rods (521), and the second acute-angle part (532) of the third transmission connecting rod (53) is hinged on the outer wall of the middle shaft (2);
jackshaft (2) outer wall is close to second drive link (52) department and still is equipped with arc casing (6), the bottom inner wall of arc casing (6) is equipped with and seals dog (7), it is equipped with slips (8) to seal dog (7) internal clearance department, slips (8) are connected with third acute angle portion (533) of third drive link (53).
2. The rotary casing running equipment matched with the electric top drive for use according to claim 1, wherein the driving mechanism (4) comprises a hydraulic cylinder (41) and a transmission bearing set (42), a pressing block (43) is connected to the bottom end of the transmission bearing set (42), a guide sliding rail (44) is arranged on the outer wall of the upper half shaft (1) close to the middle shaft (2) so that the pressing block (43) can slide up and down in the guide sliding rail (44), an inclined sliding groove (45) is arranged inside the pressing block (43), and the first acute-angle end (511) is arranged in the inclined sliding groove (45).
3. The rotary lower casing equipment matched with the electric top drive for use according to claim 2, wherein an upper cover plate (9) and a lower cover plate (10) are respectively arranged at the top and the bottom of the hydraulic cylinder (41), an upper end cover (11) and a first self-aligning thrust bearing (12) are arranged on the outer wall of the upper half shaft (1) close to the upper cover plate (9), and the tail end of the first self-aligning thrust bearing (12) is pressed against the upper cover plate (9);
the bottom department that goes up semi-axis (1) outer wall and be close to pneumatic cylinder (41) is equipped with boss (13), boss (13) department is equipped with second self-aligning thrust bearing (14), the end of second self-aligning thrust bearing (14) is supported and is pressed in apron (10) down.
4. A rotary casing running arrangement for use with an electric top drive according to claim 2, characterised in that the piston rod in the hydraulic cylinder (41) is in threaded connection with the drive bearing set (42).
5. A rotary running sleeve rig for use with an electric top drive according to claim 2, characterised in that the intermediate shaft (2) comprises a mounting portion (21) and a sleeve portion (22), the mounting portion (21) being further provided with a crash rubber (15) at an end face adjacent the sleeve portion (22).
6. A rotary casing running arrangement for use with an electric top drive according to claim 1, characterised in that the outer wall of the curved housing (6) is provided with a through hole (16) for facilitating movement of the drive mechanism (5).
7. A rotary lower casing arrangement for use with an electric top drive according to claim 5, characterised in that the lower half shaft (3) is further provided with a sealing cup (17) at its bottom end.
8. A rotary casing running gear for use with an electric top drive according to claim 3, characterised in that the outer wall of the upper half shaft (1) near the upper end cap (11) is further provided with a locking ring (18).
9. The method of using a rotary casing running rig for use with a power top drive of claim 7, comprising the steps of:
1) the lower end of a main shaft of the electric top drive device is connected with a rotary lower sleeve device;
2) starting the hydraulic cylinder (41), wherein the hydraulic cylinder (41) pushes the pressing block (43) to move downwards so as to drive the transmission mechanism (5), and the slips (8) are opened;
3) righting the casing by utilizing a sealing leather cup (17) at the lower end of a rotary casing setting device so as to insert the lower half shaft (3) into the casing until the casing upwards contacts the anti-collision rubber (15);
4) the hydraulic cylinder (41) is started again, the hydraulic cylinder (41) pushes the pressing block (43) to move upwards, and then the transmission mechanism (5) is driven, so that the slip (8) forms stable clamping on the sleeve;
5) the electric top drive device is used for rotating the sleeve to implement upper buckling, and the crown block is used for implementing lower entering of the sleeve;
6) after the casing is completely lowered, the hydraulic cylinder (41) is started again, the slips (8) are opened, and the electric top driving device and the rotary casing lowering equipment are lifted by the crown block;
7) repeating the steps 1) -6) until all the casings are connected and lowered to the bottom of the well.
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| CN202010512932.XA CN111764846B (en) | 2020-06-08 | 2020-06-08 | Rotary casing running device matched with electric top drive and using method thereof |
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| CN202010512932.XA CN111764846B (en) | 2020-06-08 | 2020-06-08 | Rotary casing running device matched with electric top drive and using method thereof |
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| CN111764846B true CN111764846B (en) | 2021-08-10 |
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| CN113685148B (en) * | 2021-09-02 | 2023-11-07 | 深蓝(天津)智能制造有限责任公司 | Motor-driven casing running tool |
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| CN104975810A (en) * | 2015-07-14 | 2015-10-14 | 黑龙江北方双佳钻采机具有限责任公司 | Totally-mechanical top-drive casing device by adoption of externally-clamping mode |
| CN106761411A (en) * | 2017-02-22 | 2017-05-31 | 西南石油大学 | Drive casing appliances in a kind of motor-driven top |
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| US7188686B2 (en) * | 2004-06-07 | 2007-03-13 | Varco I/P, Inc. | Top drive systems |
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| CN106761411A (en) * | 2017-02-22 | 2017-05-31 | 西南石油大学 | Drive casing appliances in a kind of motor-driven top |
| CN110552619A (en) * | 2019-09-10 | 2019-12-10 | 中国石油集团川庆钻探工程有限公司 | Top drive rotary casing running device |
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