CN101942977A - Continuous cyclic drilling device - Google Patents

Continuous cyclic drilling device Download PDF

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Publication number
CN101942977A
CN101942977A CN2010102719891A CN201010271989A CN101942977A CN 101942977 A CN101942977 A CN 101942977A CN 2010102719891 A CN2010102719891 A CN 2010102719891A CN 201010271989 A CN201010271989 A CN 201010271989A CN 101942977 A CN101942977 A CN 101942977A
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China
Prior art keywords
drilling
preventer
tong
fixed
cavity
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CN2010102719891A
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Chinese (zh)
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CN101942977B (en
Inventor
马青芳
胡志坚
肖建秋
王爱国
邵强
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China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
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China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
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Priority to CN 201010271989 priority Critical patent/CN101942977B/en
Publication of CN101942977A publication Critical patent/CN101942977A/en
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Publication of CN101942977B publication Critical patent/CN101942977B/en
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Abstract

The invention discloses a continuous cyclic drilling device used in the technical field of petroleum drilling. A drill pipe power tong is fixed on a power tong baseplate on the top of a balance compensation hydraulic cylinder, the balance compensation hydraulic cylinder is vertically fixed below the upper connection board of a support assembly, the piston rod of the balance compensation hydraulic cylinder passes through the upper connection board, and the top of the piston rod of the balance compensation hydraulic cylinder is fixedly provided with the power tong baseplate. A cavity assembly is fixed between the upper connection board and the lower connection board of the support assembly, the lower end of a drilling power slip is fixed in the bushing of a drilling turntable, the upper end of the drilling power slip is connected with the support assembly through a bearing beam, and the centers of the drill pipe power tong, the cavity assembly and the drilling power slip are coincident. The device has the effects of keeping the continuous cycling of the drilling fluid to discharge the drilling cuttings during the period of making a connection, avoiding the damage to the drill pipe caused by the up tong when screwing on and screwing off, eliminating the adverse effect of the slip holding capacity caused by the upset force of the drilling fluid, and improving the stress state between the slip and the drill string.

Description

A kind of uninterrupted circulating drilling device
Technical field
The present invention relates to the drilling equipment field in the petroleum industry, specifically is a kind of drilling rig that keeps the uninterrupted circulation of drilling fluid during the drilling rod that makes up a joint.
Background technology
At present, the conventional drilling operation before the drilling rod that makes up a joint, must at first be closed drilling fluid pump, stops circulation of drilling fluid, after finishing the drilling rod operation that makes up a joint, restarts drilling fluid pump and recovers 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 may 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 (ContinuousCirculation System) has abroad at first been proposed, and applied for relevant patent (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 drill pipe tong (Iron roughneck), running and pulling device (Snubber), three joint defence spray apparatus groups (BOP) and drilling well power slip (Power slip) etc. by force, wherein drill pipe tong has spinner, links closely and the shackle function, and simultaneously drilling rod can move up and down under the driving of running and pulling device by force; Blowout preventer set then is made up of first envelope ram preventer, middle blind rams preventer and second envelope ram preventer, forms airtight cavity around tool joint, between first envelope ram preventer and middle blind rams preventer a by-pass port is arranged; Between second envelope ram preventer and middle blind rams preventer a by-pass port is arranged, two by-pass ports are respectively applied for off-load and shunting; The drilling well power slip then is used to bear the drill string suspending weight, and the shackle reaction torque is provided.
The external operating principle of circulating drilling system continuously is: when the drilling rod top connection is positioned at the upper end of second envelope ram preventer, close first envelope ram preventer and second envelope ram preventer, form an airtight cavity volume around joint; Clamp bottom drilling rod body with the drilling well power slip then, whole drill string weight is acted on the drilling well rotary bushing by the drilling well power slip, the power slip of drilling well simultaneously also provides shackle required reaction torque as back-up tong; After in cavity volume, filling full high pressure drilling liquid, utilize drill pipe tong to clamp the top and drive lengthening joint and carry out shackle; Then with blind rams upper end in the middle of running and pulling device is promoted to lengthening joint by force, and the opening and closing movement that utilizes first envelope of blowout preventer set, middle full envelope cooperates part flow arrangement to finish the switching of circulation of drilling fluid passage, this moment drilling fluid fully the by-pass port from the preventer be pumped to cavity, and the passage between drilling fluid pump and the standpipe is completely severed; Close the blind rams preventer afterwards, thereby form upper and lower two airtight chamber, after opening the release of epicoele by-pass port, open first envelope ram preventer, and propose top rod, so just finished and unloaded the drilling rod operation.Same utilize the operation that can finish the new drilling rod of adjunction with above-mentioned opposite control flow, this moment, drilling fluid still constantly was pumped in the well, thus the continuous circulation of realization drilling fluid.
In the process that shackle is operated on utilizing the host implementation drilling rod, be stuck in the drilling well power slip on the drilling rod body, not only to bear the weight of whole drill string, also to provide the shackle reaction torque as back-up tong, cause damaging the drilling rod body, even may cause major accident such as drill rod breaking in drilling process.In addition, because the top masterpiece is used for the main frame drill pipe tong on the drilling fluid that produces in the last shackle process, make main frame be subjected to active force upwards, cause the drilling well 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 may causing shackle, even the accident that drill string glides occurs.
Summary of the invention
The objective of the invention is: a kind of uninterrupted circulating drilling device is provided, during making up a joint, keeps drilling fluid uninterruptedly to circulate shackle processing safety in the raising.Utilize uninterrupted circulating drilling device, the uninterrupted circulation that not only during making up a joint, can keep drilling fluid, thereby during whole creeping into, realize stable equivalent circulating density and the discharge of continual drilling cuttings, and back-up tong causes damage to the drilling rod body can avoid shackle the time, top power is to the adverse effect of slips clamping ability on the elimination drilling fluid, improve the stress between slips and the drill string, the safety and the reliability of shackle operation in the raising.
The technical solution used in the present invention is: a kind of uninterrupted circulating drilling device, mainly form by drill pipe tong, Power Tong base plate, balanced compensated oil cylinder, cavity assembly, epicoele bypass valve, cavity of resorption bypass valve, bracket assembly and drilling well power slip, drill pipe tong is fixed on the Power Tong base plate at balanced compensated oil cylinder top, utilize the dental lamina of drill pipe tong can clamp drilling rod, and, finish shackle operation on the drilling rod by the rotation of drill pipe tong driving drilling rod.Balanced compensated oil cylinder is vertically fixed on below the upper junction plate of bracket assembly, and the piston rod of balanced compensated oil cylinder passes upper junction plate, is fixed with the Power Tong base plate on the top of the piston rod of balanced compensated oil cylinder.The cavity assembly is fixed between the upper junction plate and lower connecting plate of bracket assembly, and the epicoele bypass valve is connected with the last by-pass port of cavity assembly by pipeline; The cavity of resorption bypass valve is connected with the following by-pass port of cavity assembly by pipeline, and epicoele bypass valve and cavity of resorption bypass valve play the effect of release and shunting drilling fluid respectively.The lower end of drilling well power slip is fixed in the bushing of drilling well rotating disk, and drilling well power slip upper end couples together by carrier bar and bracket assembly, and drill pipe tong, cavity assembly are consistent with the center of drilling well power slip.During use, bracket assembly is fixed on the drilling well rotating disk on the plane.
Described balanced compensated oil cylinder has four, and the top symmetry of the piston rod of four balanced compensated oil cylinders is fixed on the bottom of Power Tong base plate.Four balanced compensated oil cylinders can make Power Tong base plate and drill pipe tong move up and down or be in quick condition, protection joint screw thread when helping on drill pipe tong shackle.
Power Tong base plate middle part has drilling rod to pass through the hole, upper junction plate has drilling rod to pass through the hole, lower connecting plate has drilling rod to pass through the hole, and the center line of the drilling rod of the drilling rod of the drilling rod of Power Tong base plate by centerline hole, upper junction plate by centerline hole and lower connecting plate by centerline hole and drill pipe tong is on same straight line.
The cavity assembly is made up of first envelope ram preventer, a blind rams preventer, second envelope ram preventer and a back-up tong, be connected with the blind rams preventer in the bottom of first envelope ram preventer, the bottom of blind rams preventer is connected with back-up tong, and the bottom of back-up tong is connected with second envelope ram preventer.Second envelope ram preventer is fixed on the lower connecting plate.Bypass interface on having between first envelope ram preventer and the blind rams preventer, last bypass interface is connected with pipeline and epicoele bypass valve; Following bypass interface is arranged between blind rams preventer and back-up tong, and following bypass interface is connected with pipeline and cavity of resorption bypass valve.When first envelope ram preventer of cavity assembly is closed with second envelope ram preventer, in the cavity assembly, form a closed chamber; When first envelope ram preventer and blind rams preventer are closed, between first envelope ram preventer and blind rams preventer, form an epicoele, last by-pass port and epicoele UNICOM; When blind rams preventer and second envelope ram preventer are closed, between blind rams preventer and second envelope ram preventer, form a cavity of resorption, following by-pass port and cavity of resorption UNICOM.
Described bracket assembly is made up of upper junction plate, pillar, lower connecting plate, height adjuster, base and carrier bar, is fixed with height adjuster respectively on the top of four plate shaped bases.Adjust height adjuster, can make bracket assembly keep level.The lower end of four pillars is separately fixed at height adjuster top.In the lower end of four pillars and between four pillars, be welded with crossbeam, on crossbeam, adopt bolt that carrier bar is arranged, two carrier bars are parallel to each other and in same horizontal plane.Make things convenient for the installation and removal between drilling well power slip and the bracket assembly.The housing outer wall of drilling well power slip has draw-in groove, and carrier bar is in draw-in groove, and the drilling well power slip is fixed on the bracket assembly.Upper junction plate is fixed on the top of four pillars, and lower connecting plate is fixed on four pillars.
During installation, the lower end of drilling well power slip is fixed in the drilling well center of turntable hole by master bushing, the weight that is used for the clamping drill string and bears whole drill string; Utilize the housing of drilling well power slip to bear top power on the drilling fluid, can eliminate the adverse effect of top power, can not occur causing the phenomenon that the slips of drilling well power slip skids or drilling rod glides by last top power to the slips chucking power.
Sketch the drilling rod process that makes up a joint of the uninterrupted circulating drilling device of the present invention and unload the drilling rod process, help understanding the present invention.Uninterrupted circulating drilling device is fixed on drilling well rotating disk 8 tops.
Unload the process of drilling rod: consult Fig. 3.
At first, promote top-drive drilling (be called for short: drive on the top) and drill string, when drill string 27 is promoted to desired location, starts drilling well power slip 7 and clamp drill string 27; Descend afterwards caving drive 24 make drill string 27 by 7 of drilling well power slips on drilling well rotating disk 8, the weight that drilling well this moment rotating disk 8 bears whole drill string 27; After back-up tong 14 is in the sustained height position in definite drilling rod top connection 26 and chamber, start back-up tong 14 clamping drilling rod top connections 26 in the chamber, start Power Tong dental lamina 9 clamping tops simultaneously and drive lengthening joint 25, and close first envelope ram preventer 12 and second envelope ram preventer 16, between first envelope ram preventer 12 and second envelope ram preventer 16, form annular seal space 22, after closing epicoele bypass valve 4, open cavity of resorption bypass valve 5, filling drilling fluid and supercharging in annular seal space; When the annular seal space internal pressure equates with standpipe pressure, utilize drill pipe tong 1 to dismantle drilling rod top and drive lengthening joint 25, and lengthening joint 25 is driven on the top be promoted to blind rams preventer 13 tops; Close standpipe passage 23 again, after making drilling fluid pass through in cavity of resorption bypass valve 5 inflow chambers fully, close blind rams preventer 13, between first envelope ram preventer 12 and blind rams preventer 13, form the epicoele 28 of isolating, between blind rams preventer 13 and second envelope ram preventer 16, form cavity of resorption 29; Open epicoele bypass valve 4 then, make epicoele 28 off-load plasma discharges; After definite epicoele 28 off-loads, open first envelope ram preventer 12 and Power Tong dental lamina 9, promote the top and drive 24, lengthening joint 25 is driven on the top lift from cavity, utilize balanced compensated oil cylinder 11 to transfer drill pipe tong 1 simultaneously, finish since then and unload the drilling rod operation, can add the drilling rod that makes up a joint subsequently.
The process that makes up a joint: consult Fig. 4.
At first, single drilling rod 30 is connected to the top drives on the lengthening joint 25, promote the top then and drive 24, drilling rod 30 is carried to the top of drill pipe tong 1; Then down caving drives 24, and drilling rod 30 is put into epicoele 28, when 50mm is transferred to blind rams in drilling rod lower contact 31, stops to transfer; With balanced compensated oil cylinder 11 drill pipe tong 1 is promoted to certain altitude, starts Power Tong dental lamina 9 and clamp drilling rod 30, close first envelope ram preventer 12 simultaneously; After closing epicoele bypass valve 4, open standpipe passage 23, filling drilling fluid and supercharging in upper chamber 28; When the pressure of epicoele 28 and cavity of resorption 29 equates, open blind rams preventer 13, epicoele 28 and cavity of resorption 29 are communicated with; Close cavity of resorption bypass valve 5 afterwards, cutting off the cavity of resorption passage, make drilling fluid, drive drilling rods 30 with drill pipe tong 1 and balance compensating cylinder 11 and dock, and finish to detain and operate with drill string 27 fully by after in standpipe passage 23 and drilling rod 30 inflow chambers; Then open epicoele bypass valve 4 and make the cavity off-load, open first envelope ram preventer 12 and second envelope ram preventer 16 plasma discharges afterwards; Open back-up tong 14 in Power Tong dental lamina 9 and the chamber at last, promote the top and drive 24 and drill string 27, and unclamp drilling well power slip 7, finish the stacks operation since then, can normally creep into operation subsequently.
Described drilling well rotating disk 8 and top drive 24 has factory to produce and sale.It is top-drive drilling that 24 full name is driven on the top.
Beneficial effect of the present invention: the invention provides a kind of uninterrupted circulating drilling device, not only can during making up a joint, keep drilling fluid to circulate incessantly, thereby during whole creeping into, realize stable equivalent circulating density and discharge drilling cuttings incessantly; Between blind rams preventer and second envelope ram preventer back-up tong is installed, utilizes back-up tong that the shackle reaction torque is provided, the top connection of the direct clamping drilling rod of back-up tong can not cause damage to the drilling rod body during last shackle; Back-up tong causes damage to the drilling rod body when avoiding shackle.Utilization is placed in the weight that the drilling well power slip on the drilling well rotating disk clamps drill string and bears whole drill string, the housing of drilling well power slip connects as one by carrier bar and main frame, utilize housing to bear power effect in top on the drilling fluid, can eliminate and go up the adverse effect of top power, phenomenon can not occur by the slips that last top power causes skids or drill string glides to the slips chucking power.Effectively improve the stress of drill string, improved the safety and the reliability of last shackle operation.
Inscribe between the effective safety drilling that solves under the narrow drilling fluid density window considerations of this device, in addition, in extended reach well, horizontal well, underbalance well and hp-ht well drilling well, also all have in the significant application value, can effectively reduce drilling failure, shorten well construction period, save drilling cost.
Description of drawings
Fig. 1 is the uninterrupted circulating drilling apparatus structure of a present invention schematic diagram.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 represents to begin to unload the drilling rod operation.
Fig. 4 represents to begin to make up a joint operation.
Among the figure, the 1-drill pipe tong; 2-Power Tong base plate; 3-cavity assembly; 4-epicoele bypass valve; 5-cavity of resorption bypass valve; The 6-bracket assembly; 7-drilling well power slip; 8-drilling well rotating disk; 9-Power Tong dental lamina; The 10-upper junction plate; The balanced compensated oil cylinder of 11-; First envelope ram preventer of 12-; 13-blind rams preventer; The 14-back-up tong; The 15-pillar; Second envelope ram preventer of 16-; The 17-lower connecting plate; The 18-height adjuster; The 19-base; The 20-carrier bar; The 21-bolt; The 22-annular seal space; 23-standpipe passage; 24-drives on the top; 25-drives lengthening joint in the top; The top connection of 26-drilling rod; The 27-drill string; The 28-epicoele; The 29-cavity of resorption; The 30-drilling rod; The lower contact of 31-drilling rod.
The specific embodiment
Embodiment 1: with a uninterrupted circulating drilling device is example, and the present invention is described in further detail.
Consult Fig. 1.Uninterrupted circulating drilling device mainly is made up of drill pipe tong 1, Power Tong base plate 2, balanced compensated oil cylinder 11, cavity assembly 3, epicoele bypass valve 4, cavity of resorption bypass valve 5, bracket assembly 6 and drilling well power slip 7.
Drill pipe tong 1 is fixed on the Power Tong base plate 2 at balanced compensated oil cylinder 11 tops.Balanced compensated oil cylinder 11 is double acting single-piston rod hydraulic jacks.Balanced compensated oil cylinder 11 is vertically fixed on below the upper junction plate 10 of bracket assembly 6, and promptly balanced compensated oil cylinder 11 has four, and the top symmetry of the piston rod of four balanced compensated oil cylinders 11 is fixed on four jiaos of bottoms of rectangle Power Tong base plate 2.The piston rod of four balanced compensated oil cylinders 11 passes upper junction plate 10, is fixed with a Power Tong base plate 2 on the top of the piston rod of balanced compensated oil cylinder 11.
Cavity assembly 3 is fixed between the upper junction plate 10 and lower connecting plate 17 of bracket assembly 6, and epicoele bypass valve 4 is connected with the last by-pass port of cavity assembly 3 by pipeline; Cavity of resorption bypass valve 5 is connected with the following by-pass port of cavity assembly 3 by pipeline.The lower end of drilling well power slip 7 is fixed in the bushing of drilling well rotating disk 8, and drilling well power slip 7 upper ends couple together by carrier bar 20 and bracket assembly 6, and drill pipe tong 1, cavity assembly 3 are consistent with the center of drilling well power slip 7.Power Tong base plate 2 middle parts have a drilling rod to pass through the hole, upper junction plate 10 has a drilling rod to pass through the hole, lower connecting plate 17 has a drilling rod by the hole, and the center line of the drilling rod of the drilling rod of the drilling rod of Power Tong base plate 2 by centerline hole, upper junction plate 10 by centerline hole and lower connecting plate 17 by centerline hole and drill pipe tong 1 is on same straight line.
Cavity assembly 3 is formed the about 1900mm of the overall height of cavity assembly 3 by first envelope ram preventer 12, blind rams preventer 13, second envelope ram preventer 16 and a back-up tong 14.Be connected with blind rams preventer 13 in the bottom of first envelope ram preventer 12, the bottom of blind rams preventer 13 is connected with back-up tong 14, and the bottom of back-up tong 14 is connected with second envelope ram preventer 16.Second envelope ram preventer 16 is fixed on the lower connecting plate 17.Bypass interface on having between first envelope ram preventer 12 and the blind rams preventer 13, last bypass interface is connected with pipeline and epicoele bypass valve 4; Following bypass interface is arranged between blind rams preventer 13 and back-up tong 14, and following bypass interface is connected with pipeline and cavity of resorption bypass valve 5.When first envelope ram preventer 12 of cavity assembly 3 is closed with second envelope ram preventer 16, in cavity assembly 3, form a closed chamber; When first envelope ram preventer 12 is closed with blind rams preventer 13, between first envelope ram preventer 12 and blind rams preventer 13, form an epicoele 28, last by-pass port and epicoele 28 UNICOMs; When blind rams preventer 13 and second envelope ram preventer 16 are closed, between blind rams preventer 13 and second envelope ram preventer 16, form a cavity of resorption 29, following by-pass port and cavity of resorption 29 UNICOMs.
Described bracket assembly 6 is made up of upper junction plate 10, pillar 15, lower connecting plate 17, height adjuster 18, base 19 and carrier bar 20, is fixed with height adjuster 18 respectively on the top of four plate shaped bases 19.The lower end of four pillars 15 is separately fixed at height adjuster 18 tops.Four pillars 15 are rectangular tube.In the lower end of four pillars 15 and between four pillars 15, be welded with crossbeam, on crossbeam, adopt bolt 21 to be fixed with that 20, two carrier bars 20 of carrier bar are parallel to each other and in same horizontal plane.Consult Fig. 2.The housing outer wall both sides of drilling well power slip 7 have draw-in groove respectively, and carrier bar 20 is fixed on drilling well power slip 7 on the bracket assembly 6 in draw-in groove.Consult Fig. 1.Upper junction plate 10 is fixed on the top of four pillars 15, and lower connecting plate 17 is fixed on four pillars 15.

Claims (5)

1. uninterrupted circulating drilling device, it is characterized in that: mainly be made up of drill pipe tong (1), Power Tong base plate (2), balanced compensated oil cylinder (11), cavity assembly (3), epicoele bypass valve (4), cavity of resorption bypass valve (5), bracket assembly (6) and drilling well power slip (7), drill pipe tong (1) is fixed on the Power Tong base plate (2) at balanced compensated oil cylinder (11) top; Balanced compensated oil cylinder (11) is vertically fixed on below the upper junction plate (10) of bracket assembly (6), and the piston rod of balanced compensated oil cylinder (11) passes upper junction plate (10), is fixed with Power Tong base plate (2) on the top of the piston rod of balanced compensated oil cylinder (11); Cavity assembly (3) is fixed between the upper junction plate (10) and lower connecting plate (17) of bracket assembly (6), and epicoele bypass valve (4) is connected by the last by-pass port of pipeline with cavity assembly (3); Cavity of resorption bypass valve (5) is connected by the following by-pass port of pipeline with cavity assembly (3); The lower end of drilling well power slip (7) is fixed in the bushing of drilling well rotating disk (8), drilling well power slip (7) upper end couples together by carrier bar (20) and bracket assembly (6), and drill pipe tong (1), cavity assembly (3) are consistent with the center of drilling well power slip (7).
2. uninterrupted circulating drilling device according to claim 1 is characterized in that: described balanced compensated oil cylinder (11) has four, and the top symmetry of the piston rod of four balanced compensated oil cylinders (11) is fixed on the bottom of Power Tong base plate (2).
3. uninterrupted circulating drilling device according to claim 1, it is characterized in that: Power Tong base plate (2) middle part has drilling rod to pass through the hole, upper junction plate (10) has drilling rod to pass through the hole, lower connecting plate (17) has drilling rod to pass through the hole, and the center line of the drilling rod of the drilling rod of the drilling rod of Power Tong base plate (2) by centerline hole, upper junction plate (10) by centerline hole and lower connecting plate (17) by centerline hole and drill pipe tong (1) is on same straight line.
4. according to claim 1,2 or 3 described uninterrupted circulating drilling devices, it is characterized in that: cavity assembly (3) is by first envelope ram preventer (12), a blind rams preventer (13), a second envelope ram preventer (16) and a back-up tong (14) are formed, be connected with blind rams preventer (13) in the bottom of first envelope ram preventer (12), the bottom of blind rams preventer (13) is connected with back-up tong (14), the bottom of back-up tong (14) is connected with second envelope ram preventer (16), second envelope ram preventer (16) is fixed on the lower connecting plate (17), between first envelope ram preventer (12) and blind rams preventer (13) last bypass interface is arranged, last bypass interface is connected with pipeline and epicoele bypass valve (4); Between blind rams preventer (13) and back-up tong (14) following bypass interface is arranged, following bypass interface is connected with pipeline and cavity of resorption bypass valve (5); When first envelope ram preventer (12) of cavity assembly (3) and second envelope ram preventer (16) when closing, in cavity assembly (3), form a closed chamber; When first envelope ram preventer (12) and blind rams preventer (13) when closing, a formation epicoele (28) between first envelope ram preventer (12) and blind rams preventer (13), last by-pass port and epicoele (28) UNICOM; At blind rams preventer (13) and second envelope ram preventer (16) when closing, a formation cavity of resorption (29) between blind rams preventer (13) and second envelope ram preventer (16), following by-pass port and cavity of resorption (29) UNICOM.
5. according to claim 1,2 or 3 described uninterrupted circulating drilling devices, it is characterized in that: described bracket assembly (6) is by upper junction plate (10), pillar (15), lower connecting plate (17), height adjuster (18), base (19) and carrier bar (20) are formed, be fixed with height adjuster (18) respectively on the top of four plate shaped bases (19), the lower end of four pillars (15) is separately fixed at height adjuster (18) top, in the lower end of four pillars (15) and between four pillars (15), be welded with crossbeam, on crossbeam, adopt bolt (21) to be fixed with carrier bar (20), two carrier bars (20) are parallel to each other and in same horizontal plane, the housing outer wall of drilling well power slip (7) has draw-in groove, carrier bar (20) is in draw-in groove, drilling well power slip (7) is fixed on the bracket assembly (6), upper junction plate (10) is fixed on the top of four pillars (15), and lower connecting plate (17) is fixed on four pillars (15).
CN 201010271989 2010-09-01 2010-09-01 Continuous cyclic drilling device Active CN101942977B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852473A (en) * 2012-09-04 2013-01-02 中国石油天然气集团公司 Protecting housing for iron roughneck bearing of continuous circulation drilling system
CN102900393A (en) * 2012-11-08 2013-01-30 盐城市金巨石油机械制造有限公司 Backpressure control type anti-jacking and blowout-preventing device
CN104781499A (en) * 2012-10-18 2015-07-15 控制压力营运私人有限公司 Apparatus for continuous circulation drilling of a wellbore
CN106223884A (en) * 2016-08-30 2016-12-14 中国石油集团渤海钻探工程有限公司 The continuous circulating device of gas drilling
CN106285528A (en) * 2016-09-28 2017-01-04 中国石油集团渤海钻探工程有限公司 The pressure control device of continuous cyclic drilling

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US6591916B1 (en) * 1998-10-14 2003-07-15 Coupler Developments Limited Drilling method
CN101094967A (en) * 2004-11-30 2007-12-26 瓦克I/P公司 Top drive unit, pipe gripping device and method of drilling a wellbore
CN201802330U (en) * 2010-09-01 2011-04-20 中国石油天然气集团公司 Uninterrupted circular drilling device

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US6315051B1 (en) * 1996-10-15 2001-11-13 Coupler Developments Limited Continuous circulation drilling method
US6591916B1 (en) * 1998-10-14 2003-07-15 Coupler Developments Limited Drilling method
CN101094967A (en) * 2004-11-30 2007-12-26 瓦克I/P公司 Top drive unit, pipe gripping device and method of drilling a wellbore
CN201802330U (en) * 2010-09-01 2011-04-20 中国石油天然气集团公司 Uninterrupted circular drilling device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852473A (en) * 2012-09-04 2013-01-02 中国石油天然气集团公司 Protecting housing for iron roughneck bearing of continuous circulation drilling system
CN104781499A (en) * 2012-10-18 2015-07-15 控制压力营运私人有限公司 Apparatus for continuous circulation drilling of a wellbore
US10344547B2 (en) 2012-10-18 2019-07-09 Managed Pressure Operations Pte. Ltd. Apparatus for continuous circulation drilling of a wellbore
CN102900393A (en) * 2012-11-08 2013-01-30 盐城市金巨石油机械制造有限公司 Backpressure control type anti-jacking and blowout-preventing device
CN106223884A (en) * 2016-08-30 2016-12-14 中国石油集团渤海钻探工程有限公司 The continuous circulating device of gas drilling
CN106285528A (en) * 2016-09-28 2017-01-04 中国石油集团渤海钻探工程有限公司 The pressure control device of continuous cyclic drilling

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