CN102678072A - Torque-bearing slip assembly for continuous circulation systems - Google Patents
Torque-bearing slip assembly for continuous circulation systems Download PDFInfo
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- CN102678072A CN102678072A CN2012101496293A CN201210149629A CN102678072A CN 102678072 A CN102678072 A CN 102678072A CN 2012101496293 A CN2012101496293 A CN 2012101496293A CN 201210149629 A CN201210149629 A CN 201210149629A CN 102678072 A CN102678072 A CN 102678072A
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Abstract
A torque-bearing slip assembly for continuous circulation systems is applied to petroleum drilling wellheads. The torque-bearing slip assembly mainly comprises a power slip, a rotary drive bushing, a pair of torque-bearing connecting plates and four torque-bearing pins. The power slip is mounted in the rotary drive bushing, and the outer conical surface of the power slip is in contact with the inner conical surface of the rotary drive bushing; a top flange of the shell of the power slip is located on the tops of bearing beams, the pair of torque-bearing connecting plates are located upon the rotary drive bushing and under the flange of the power slip, and are connected with the rotary drive bushing through the four torque-bearing pins, and U-shaped channels on the torque-bearing connecting plates ride on crossbeams of main bases. As a single is connected, the torque-bearing slip assembly can be utilized to hold a drill string and bear the weight of the drill string, the bearing beams are utilized to convert the lift force of drilling fluid into holding force applied on the drill string by the power slip, consequently, the adverse affection of the lift force of the drilling fluid on the holding capability is eliminated, and reverse torque needed by break-out is provided.
Description
Technical field
The present invention relates to oil drilling equipment technology field, the slips that particularly a kind of drilling well well head is special-purpose specifically is the slips that can bear the shackle reaction torque in a kind of continuous circulating drilling system.
Background technology
At present, during the conventional drilling operation, before making up a joint, must at first close high-pressure pump, stop circulation of drilling fluid, after completion makes up a joint operation, restart high-pressure pump and recover circulation of drilling fluid.When circulation of drilling fluid stopped, negative surge pressure and landwaste sedimentation that the shaft bottom produces very easily caused accidents such as well kick, gas cut, cave-in and bit freezing; After making up a joint, restart the high pressure drilling pump, rebulid circulation of drilling fluid, the positive surge pressure that cause in the shaft bottom this moment possibly surpass formation fracture pressure, causes drilling fluid leakage.Therefore conventional circulation of drilling fluid mode can't satisfy the drilling well demand of bad grounds such as narrow drilling fluid density window.
In order to address the above problem, the notion of continuous circulating drilling (Continuous Circulation System) has abroad at first been proposed, and applied for related patent U.S. Patent No. (US6591916B1, US6315051B1, CA2550981A1).Developed the continuous circulation system model machine afterwards abroad, and realized that successfully (SPE102851, SPE102859 SPE90702), become an advanced person's technical equipment to commercial applications.External continuous circulation system mainly is made up of main frame, part flow arrangement, power unit and control system.Main frame is the core of continuous circulation system; Mainly comprise Power Tong (Iron roughneck), compensating chain device (Snubber), three joint defence spray apparatus groups (BOP) and bottom power slip (Power slip) etc.; Wherein Power Tong has spinner, links closely and the shackle function; Compensating chain device and Power Tong interoperation are accomplished the accurate make-up and the last shackle operation of tool joint simultaneously; Blowout preventer set then is made up of first envelope, middle full envelope and second inside back cover group ram preventer; Can around tool joint, form airtight cavity; And the opening and closing movement that utilizes first envelope of blowout preventer set, middle full envelope cooperates part flow arrangement to accomplish the switching of circulation of drilling fluid passage, the continuous circulation of the operating period drilling fluid of realizing making up a joint; The bottom power slip then is used to bear the drill string suspending weight, and the shackle reaction torque is provided.
Make up a joint when going up shackle, the bottom power slip is clamped bottom drilling rod body, and whole drill string weight is acted on the rotary bushing through power slip, and the bottom power slip also provides shackle required reaction torque as back-up tong simultaneously.
External continuous circulation system bottom power slip weak point is in the process of shackle operation on the host implementation drilling rod; Be stuck in the bottom power slip on the drilling rod body; Not only to bear the weight of whole drill string; Also to the shackle reaction torque be provided, cause damaging the drilling rod body, even possibly cause major accident such as drill rod breaking in drilling process as back-up tong.In addition; Because the top masterpiece is used for the main frame Power Tong on the drilling fluid that produces in the last shackle process; Make main frame receive active force upwards, cause the bottom power slip to have the trend that moves upward, its chucking power to drilling rod is reduced; Slips skids and unloads not open button in the time of possibly causing shackle, even drill string downslide generation drilling string not well braked accident occurs.
Summary of the invention
The objective of the invention is: but a kind of slip system of continuous circulating drilling system bearing torque is provided; Ability clamping drill string, the weight of bearing whole drill string; Utilize carrier bar that top power on the drilling fluid is converted into the chucking power of power slip to drill string, top power links to each other main frame through the bearing torque junction plate to the adverse effect of slips grip on the elimination drilling fluid with rotary bushing; For main frame provides the shackle reaction torque, effectively improve safety and the reliability that goes up the shackle operation.Solve continuous circulating drilling system in the processing safety problem of the operating period that makes up a joint, for continuous circulating drilling system main frame a kind of conveniently fixed form is provided simultaneously.
The technical scheme that the present invention adopts is: but the slip system of continuous circulating drilling system bearing torque mainly is made up of a power slip, rotary bushing, a pair of bearing torque junction plate and four bearing torque pins.Wherein: power slip is installed in the rotary bushing, and the male cone (strobilus masculinus) of power slip lower end contacts with the inner conical surface of rotary bushing upper end; Power slip housing upper flange is positioned at the top of carrier bar during use; A pair of bearing torque junction plate be positioned at rotary bushing top power slip wing plate below; And link to each other with rotary bushing through four bearing torque pins, the U type groove during use on the bearing torque junction plate straddles on the crossbeam of main frame base.
Described power slip is made up of one group of cylinder, one group of dental lamina, leverage and housing.Dental lamina is the wedge structure, and lateral surface is an arc surface, and medial surface has slip insert; In the housing is taper seat, and outside top is square, two wing plates about the top has.The piston rod of cylinder links to each other with dental lamina through leverage; The dental lamina arc surface contacts with the housing inner conical surface; Cylinder places in the housing.Two wing plates are positioned at the top of two carrier bars during use, and the left and right side of square shell contacts with the medial surface of carrier bar.Through carrier bar the last top power on the main frame is passed to power slip, and the relative position of definite main frame base and rotating disk.
Described rotary bushing, inside is the two sections cone structure, and outer upper ends is a square structure, and the lower end is the ladder cylindrical surface structure, and upper surface has four cylindrical holes perpendicular to upper surface that are uniformly distributed with.
Described bearing torque junction plate is a plate that has warp architecture; Curved end is the U type groove structure, and the other end is interior arc-shaped structure, and the flat square groove of two symmetries is arranged near arc edge; During installation; Flat square groove blocks the top of bearing torque pin, and U type groove straddles on the crossbeam of main frame base during use, and reaction torque is passed to the bearing torque pin through the bearing torque junction plate.
The bearing torque pin is a cylinder, is divided into two parts up and down, and the cross section of top square cylinder is a rectangle, and the cross section of lower cylindrical body is circular.The lower cylindrical body is in the pin-and-hole of rotary bushing, and the top square cylinder is in the flat square groove of bearing torque junction plate.The bearing torque junction plate is connected through the bearing torque pin with rotary bushing.During use reaction torque is passed to rotating disk through rotary bushing.
When installation and work, the present invention is with cycle master base and carrier bar are used continuously.
But sketch the peace loading, unloading drilling rod and the process that makes up a joint of the slip system of continuous circulating drilling system bearing torque, help understanding the present invention.
1, installation process: consult Fig. 3 and Fig. 4
At first, rotary bushing 2 is put into rotating disk 23, carrier bar 6 is linked to each other with main frame base 5 through bolt; Then, main frame base 5 is placed on the rotating disk 23, and is symmetric points with the center of rotating disk 23, carrier bar 6 parallel with the rig gates; The cylindrical end of four bearing torque pins 4 is inserted respectively in 4 pin-and-holes of rotary bushing 2; The U type groove 21 of two bearing torque junction plates 3 is straddled respectively on two crossbeams 19 of main frame base 5; Arc end is near the center of rotary bushing 2; The flat square end of four bearing torque pins is inserted in four flat square grooves 22 of two bearing torque junction plates 3, the left and right directions of main frame base is fixed; At last; Lay power slip 1, two parallel surfaces of the top square shell of power slip 1 are adjacent to the inner surface of two carrier bars 6, thereby main frame base 5 front and back are fixed; Two wing plates 20 in top be placed on respectively two carrier bars 6 above, main frame base 5 is fixing up and down.
2, unload the drilling rod process: consult Fig. 5:
At first, promote top-drive drilling (be called for short: drive on the top) and drill string, when drill string 7 is promoted to desired location, starts power slip 1 and clamp drill string 7; Descend afterwards caving drive 18 make drill string 7 through 1 of power slip on rotating disk 10, the weight that this moment, rotating disk 10 bore whole drill string 7; Start back-up tong 9 clamping tool joints 8 in the chamber; Start Power Tong dental lamina 14 clamping tops simultaneously and drive lengthening joint 17; And close first envelope flashboard 24 and second envelope flashboard 25, between first envelope flashboard 24 and second envelope flashboard 25, form annular seal space, after closing epicoele bypass valve 27; Open down bypass valve 28, filling drilling fluid and supercharging in cavity assembly 12; When the pressure in the cavity assembly 12 equates with standpipe pressure; Utilize drill pipe tong 15 to dismantle drill string 7 and drive being connected of lengthening joint 17 with the top, in unloading open procedure, high pressure drilling liquid produces the top power that goes up to lengthening joint 17; Should go up top power through pass to balanced compensated fluid cylinder 13 through Power Tong dental lamina 14; Through top power on this drilling fluid of fluid pressure balance of balanced compensated fluid cylinder,, pass to the wing plate 20 of power slip 1 at last passing through main machine frame 11, main frame base 5 and carrier bar 6 by balanced compensated fluid cylinder 13; Power slip 1 housing is produced a pulling force that makes progress, because the conical surface effect of power slip 1 makes power slip 1 clamping drill string 7 more reliable.
Lengthening joint 17 is driven on the top be promoted to blind rams 26 tops; Close standpipe passage 23; After making drilling fluid pass through in cavity of resorption bypass valve 28 inflow chambers fully; Close blind rams 26, between first envelope flashboard 24 and blind rams 25, form the epicoele of isolating, between blind rams 26 and second envelope flashboard 25, form airtight cavity of resorption; Open then and go up bypass valve 27, make upper chamber's off-load plasma discharge; After the off-load of definite upper chamber; Open first envelope flashboard 24 and Power Tong dental lamina 14, promote the top and drive 18, lengthening joint 17 is driven on the top lift from cavity assembly 12 and Power Tong 15; Utilize balanced compensated oil cylinder 13 to transfer drill pipe tong 1 simultaneously, accomplish since then and unload the drilling rod operation.
3, the process that makes up a joint: consult Fig. 6 and Fig. 7.
At first, lengthening joint being driven on drilling rod and top is connected.Drilling rod 16 is hung in the continuous cycle master cavity assembly 12, start power card dental lamina 14 and step up drilling rod 16, following caving drives 18, starts the top and drives upward button of rotation, makes the top drive lengthening joint 17 and is connected with drilling rod 16.In this process; Power Tong 15 is last button back-up tong; Power Tong 15 passes to main frame base 5 through main machine frame 11 with moment of torsion, and main frame base 5 passes to rotating disk 10 through the bearing torque junction plate with moment of torsion through bearing torque pin 4 and rotary bushing 2, the reaction torque when bearing button by rotating disk 10.
Unclamp Power Tong dental lamina 14, Shang Tiding drives 18, makes drilling rod 30 lower contacts 50mm on the blind rams 26; With balanced compensated fluid cylinder 13 Power Tong 15 is promoted to certain altitude, starts Power Tong dental lamina 14 and clamp drilling rod 16, close first envelope flashboard 24 simultaneously; After closing epicoele bypass valve 27, open standpipe passage 23, filling drilling fluid and supercharging in the upper chamber of cavity assembly 12; When the pressure of upper chamber and lower chambers equates, open blind rams 26, upper chamber and lower chambers are communicated with; Close down afterwards bypass valve 28, after drilling fluid passes through in standpipe passage 23 and drilling rod 16 inflow chambers fully, drive drilling rods 16 with Power Tong 15 with balanced compensated fluid cylinder 13 and dock with drill string 7, and upward button operation of completion; Then open down bypass valve 28 and make the cavity off-load, open first envelope flashboard 24 and second envelope lock 25 plasma discharges afterwards; Open Power Tong dental lamina 14 and back-up tong 9 at last, promote the top and drive 18, unclamp power slip 1, accomplish the stacks operation.
In operating process; High pressure drilling liquid will produce top power to drilling rod 16; Should go up top power through pass to balanced compensated fluid cylinder 13 through Power Tong dental lamina 14; Through top power on this drilling fluid of fluid pressure balance of balanced compensated fluid cylinder,, pass to the wing plate 20 of power slip 1 at last passing through main machine frame 11, main frame base 5 and carrier bar 6 by balanced compensated fluid cylinder 13; Power slip 1 housing is produced a pulling force that makes progress, because the conical surface effect of power slip 1 makes power slip 1 clamping drill string 7 more reliable.
Beneficial effect of the present invention: but the invention provides a kind of slip system of continuous circulating drilling system bearing torque; Can be during making up a joint; Utilize this device can the clamping drill string; Bear drill string weight, utilize carrier bar that top power on the drilling fluid is converted into the chucking power of power slip to drill string, the top power on the drilling fluid eliminated is to the adverse effect of grip and provide shackle required reaction torque.This power slip links to each other with main frame through carrier bar, not only bears the weight of drill string, and has eliminated on the drilling fluid top power to the influence of slips grip; Through the bearing torque junction plate main frame is linked to each other with rotary bushing, the reaction torque that last shackle is required is married again on rotating disk and the rotary base, for main frame provides the shackle reaction torque, effectively improves safety and the reliability that goes up the shackle operation.This invention has improved the stress between slips and the drill string, can effectively improve the security reliability that goes up the shackle operation, for continuous circulating drilling system main frame a kind of conveniently fixed form is provided simultaneously.
Description of drawings
But the slip system three-dimensional structure sketch map of Fig. 1 continuous circulating drilling system bearing torque that is the present invention.
But the slip system structural profile sketch map of Fig. 2 continuous circulating drilling system bearing torque that is the present invention.
But Fig. 3 is the slip system of continuous circulating drilling system bearing torque installs the three-dimensional structure sketch map.
But Fig. 4 is the slip system of continuous circulating drilling system bearing torque installs schematic top plan view.
What Fig. 5 represented is to begin to unload the drilling rod operation chart.
What Fig. 6 and Fig. 7 represented is the operation chart that makes up a joint.
Among the figure, the 1-power slip; The 2-rotary bushing; 3-bearing torque junction plate; 4-bearing torque pin; 5-main frame base; The 6-carrier bar; The 7-drill string; The 8-tool joint; The 9-back-up tong; The 10-rotating disk; The 11-main machine frame; 12-cavity assembly; The balanced compensated fluid cylinder of 13-; 14-Power Tong dental lamina; The 15-Power Tong; The 16-drilling rod; 17-drives lengthening joint in the top; 18-drives on the top; The 19-crossbeam; The 20-wing plate; 21-U type groove; The flat square groove of 22-; 23-standpipe passage; First envelope flashboard of 24-; Second envelope flashboard of 25-; The 26-blind rams; The last bypass valve of 27-; Bypass valve under the 28-; The 29-cylinder; The 30-dental lamina; The 32-leverage; The 31-housing.
The specific embodiment
Embodiment 1: but be example with the slip system of a continuous circulating drilling system bearing torque, the present invention is done further explain.
Consult Fig. 2.Continuously but the slip system of circulating drilling system bearing torque mainly is made up of a power slip 1, rotary bushing 2, a pair of bearing torque junction plate 3 and four bearing torque pins 4.Wherein power slip 1 is installed in the rotary bushing 2, and power slip 1 male cone (strobilus masculinus) contacts with rotary bushing 2 inner conical surfaces; Power slip 1 housing upper flange 20 is positioned at the top of carrier bar 6; A pair of bearing torque junction plate 3 be positioned at rotary bushing 2 top power slip 1 wing plate 20 below; And link to each other with rotary bushing 2 through four bearing torque pins 4, the U type groove 21 on the bearing torque junction plate 3 straddles on the crossbeam 19 of main frame base 5.
Described power slip 1 is made up of one group of cylinder 29, one group of dental lamina 30, leverage 32 and housing 31.Dental lamina 30 is the wedge structure, and lateral surface is an arc surface, and medial surface has slip insert; In the housing 31 is taper seat, and outside top is square, and two width were 80mm about the top had, and thickness is the wing plate 20 of 40mm.The piston rod of cylinder 29 links to each other with dental lamina 30 through leverage 32; Dental lamina 30 arc surfaces contact with housing 31 inner conical surfaces; Cylinder 29 places in the housing 31.Two wing plates 20 are positioned at the top of two carrier bars 6, and the left and right side of square shell contacts with the medial surface of carrier bar 6.Through carrier bar 6 the last top power on the main frame is passed to power slip 1, and the relative position of definite main frame base and rotating disk 10.
Described rotary bushing 2, inside is the two sections cone structure, and outer upper ends is a square structure, and the lower end is the ladder cylindrical surface structure, and it is the cylindrical hole of 40mm that upper surface has four diameters perpendicular to upper surface that are uniformly distributed with.
Described bearing torque junction plate 3 is one and has the plate that warp architecture thickness is 40mm; Curved end is U type groove 21 structures, and the other end is interior arc-shaped structure, and the flat square groove 22 of two symmetries is arranged near arc edge; During installation; Flat square groove 22 blocks the top square cylinder of bearing torque pin 4, and U type groove 21 straddles on the crossbeam 19 of main frame base 5, so that reaction torque is passed to bearing torque pin 4 through bearing torque junction plate 3.
When installation and work, the present invention is with cycle master base 5 and carrier bar 6 are used continuously.
Claims (1)
1. but the slip system of a continuous circulating drilling system bearing torque is characterized in that: mainly be made up of a power slip (1), a rotary bushing (2), a pair of bearing torque junction plate (3) and four bearing torque pins (4); Wherein: power slip (1) is installed in the rotary bushing (2), and the male cone (strobilus masculinus) of power slip (1) lower end contacts with the inner conical surface of rotary bushing (2) upper end; A pair of bearing torque junction plate (3) be positioned at rotary bushing (2) top power slip (1) wing plate (20) below, and link to each other with rotary bushing (2) through four bearing torque pins (4);
Described power slip (1) is made up of one group of cylinder (29), one group of dental lamina (30), leverage (32) and housing (31); Dental lamina (30) is the wedge structure, and lateral surface is an arc surface, and medial surface has slip insert; In the housing (31) is taper seat, and outside top is square, two wing plates (20) about the top has; The piston rod of cylinder (29) links to each other with dental lamina (30) through leverage (32); Dental lamina (30) arc surface contacts with housing (31) inner conical surface; Cylinder (29) places in the housing (31);
Described rotary bushing (2), inside is the two sections cone structure, and outer upper ends is a square structure, and the lower end is the ladder cylindrical surface structure, and upper surface has four cylindrical holes perpendicular to upper surface that are uniformly distributed with;
Described bearing torque junction plate (3) is a plate that has warp architecture; Curved end is U type groove (a 21) structure, and the other end is interior arc-shaped structure, and the flat square groove (22) of two symmetries is arranged near arc edge; During installation, flat square groove (22) blocks the top square cylinder of bearing torque pin (4);
Bearing torque pin (4) is a cylinder, is divided into two parts up and down, and the cross section of top square cylinder is a rectangle, and the cross section of lower cylindrical body is circular; The lower cylindrical body is in the pin-and-hole of rotary bushing (2), and the top square cylinder is in the flat square groove (22) of bearing torque junction plate (3); Bearing torque junction plate (3) is connected through bearing torque pin (4) with rotary bushing (2).
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| CN201210149629.3A CN102678072B (en) | 2012-05-15 | 2012-05-15 | Torque-bearing slip assembly for continuous circulation systems |
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| CN201210149629.3A CN102678072B (en) | 2012-05-15 | 2012-05-15 | Torque-bearing slip assembly for continuous circulation systems |
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| CN102678072B CN102678072B (en) | 2014-08-06 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314486A (en) * | 2014-11-14 | 2015-01-28 | 中国石油大学(北京) | Hydraulic power slip of removable oil string |
| CN105350934A (en) * | 2015-12-11 | 2016-02-24 | 韩咏利 | Annular preventer for drilling and workover in oil field |
| CN105507840A (en) * | 2015-12-31 | 2016-04-20 | 徐州徐工基础工程机械有限公司 | Accident handling device for rotary disk drillers |
| CN105937365A (en) * | 2016-07-06 | 2016-09-14 | 福建省正丰信息技术发展有限公司 | Drilling machine |
| CN106014295A (en) * | 2016-07-06 | 2016-10-12 | 福建省正丰信息技术发展有限公司 | Mechanical control orifice clamper |
| CN109403859A (en) * | 2018-12-04 | 2019-03-01 | 湖北三峡职业技术学院 | Countryside portable drilling system |
| CN110861221A (en) * | 2019-11-13 | 2020-03-06 | 中冶建设高新工程技术有限责任公司 | Building engineering perforator with adjustable |
| CN113638704A (en) * | 2021-10-13 | 2021-11-12 | 北京恒利新源地热能科技有限公司 | Drill rod locking device of top drive type geothermal drilling machine |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314486A (en) * | 2014-11-14 | 2015-01-28 | 中国石油大学(北京) | Hydraulic power slip of removable oil string |
| CN105350934A (en) * | 2015-12-11 | 2016-02-24 | 韩咏利 | Annular preventer for drilling and workover in oil field |
| CN105350934B (en) * | 2015-12-11 | 2018-09-11 | 韩咏利 | A kind of oil field drilling and repairing well annular preventer |
| CN105507840A (en) * | 2015-12-31 | 2016-04-20 | 徐州徐工基础工程机械有限公司 | Accident handling device for rotary disk drillers |
| CN105937365A (en) * | 2016-07-06 | 2016-09-14 | 福建省正丰信息技术发展有限公司 | Drilling machine |
| CN106014295A (en) * | 2016-07-06 | 2016-10-12 | 福建省正丰信息技术发展有限公司 | Mechanical control orifice clamper |
| CN105937365B (en) * | 2016-07-06 | 2018-08-24 | 福建省正丰信息技术发展有限公司 | A kind of drilling machine |
| CN106014295B (en) * | 2016-07-06 | 2018-08-28 | 福建省正丰信息技术发展有限公司 | A kind of aperture clamper of Mechanical course |
| CN109403859A (en) * | 2018-12-04 | 2019-03-01 | 湖北三峡职业技术学院 | Countryside portable drilling system |
| CN109403859B (en) * | 2018-12-04 | 2024-02-09 | 湖北三峡职业技术学院 | Portable field drilling system |
| CN110861221A (en) * | 2019-11-13 | 2020-03-06 | 中冶建设高新工程技术有限责任公司 | Building engineering perforator with adjustable |
| CN113638704A (en) * | 2021-10-13 | 2021-11-12 | 北京恒利新源地热能科技有限公司 | Drill rod locking device of top drive type geothermal drilling machine |
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