CN103899254A - Multiple thread rapid connection type well drilling water-proof (sand-proof) pipe - Google Patents
Multiple thread rapid connection type well drilling water-proof (sand-proof) pipe Download PDFInfo
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- CN103899254A CN103899254A CN201210569412.8A CN201210569412A CN103899254A CN 103899254 A CN103899254 A CN 103899254A CN 201210569412 A CN201210569412 A CN 201210569412A CN 103899254 A CN103899254 A CN 103899254A
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Abstract
The invention relates to a multiple thread rapid connection type well drilling water-proof (sand-proof) pipe. The multiple thread rapid connection type well drilling water-proof (sand-proof) pipe comprises two water-proof (sand-proof) pipe units, a male connector, a female connector, a plurality of locating blocks, a plurality of screws and a seal ring, the male connector is welded to one water-proof (sand-proof) pipe unit, the female connector is welded to the other water-proof (sand-proof) pipe unit, and the male connector is provided with multi-head saw-tooth-shaped taper outer threads; the female connector is provided with taper inner threads with the same number and tooth shapes as those of the male connectors; the outer threads of the male connector are screwed in the inner threads of the female connector. According to the multiple thread rapid connection type well drilling water-proof (sand-proof) pipe, the male connector is connected with the female connector through the large-lead multi-head taper outer threads and the large-lead multi-head taper inner threads, so that the assembly distance between the male connector and the female connector and the number of assembly rotating circles are reduced, and connection speed is increased. Therefore, the multiple thread rapid connection type well drilling water-proof (sand-proof) pipe has the advantages of being stable in connection, high in assembly speed, large in rigidity, good in seal effect, high in load resistant ability, safe in construction, short in period, long in aging, capable of being repeatedly used and the like.
Description
Technical field
The present invention relates to drilling well water proof (every the sand) pipe in a kind of ocean or desert area oil exploration and oil exploitation, particularly connected mode and the structure between unit pipes and unit pipes in this drilling well water proof (every sand) pipe, belongs to oil field equipment design and manufacturing technology field.
Background technology
In deep-sea oil exploitation, drilling water-separation pipe used mostly is the segment type marine riser with snap joint at present.Under the condition that this marine riser is not surveyed in the deep-sea depth of water, the wind was high and the waves were pressing on sea, the casing programme of complex geologic conditions and every mouthful of well is different, can not meet the stability requirement of well mouth of oil well, marine riser can frequently occur rocking under the thrust of wave, cause manifold stiffness degradation, sealing performance between tube and tube declines, cause seawater to leak and immerse, have a strong impact on the safety in production of offshore field.
The vast desert area of area in the world, because many oil gas fields are present in the underground of desert, need to carry out petroleum exploration and development in wide stretches of desert area.But the problem first running in desert area drilling well is how to set up the first slurry channel of ground drill and subterranean bore hole.Because desert area surface of stratum is even all soft fine sand in the following darker scope in earth's surface, be difficult to set up stable borehole wall condition with conventional boring method, often occur drilling well first pull out of hole after the borehole wall cave in thereupon surface pipe cannot be lowered to or under less than the problem of desired depth.In order to address the above problem, people utilize the operating principle of marine riser, marine riser are applied in the petroleum exploration and development of desert area, form every sand tube.
Summary of the invention
Exist in order to solve marine oil field drilling water-separation pipe in drilling well and exploration process that connection speed is slow, rigidity is low, rock large, poor sealing performance and desert area solve drilling well first pull out of hole after cave-in, surface pipe cannot be lowered to fast or under less than problems such as desired depths, the invention provides a kind of multiple thread fast joint type drilling well water proof (every sand) pipe.
The present invention realizes the technical scheme that the Bian of above-mentioned purpose institute gets: a kind of multiple thread fast joint type drilling well water proof (every sand) pipe, comprise two water proofs (every sand) pipe unit, one male joint, one female joint, many locating pieces, many screws, one sealing ring, described male joint is welded on one end of a water proof (every sand) pipe unit, described female joint is welded on one end of another water proof (every sand) pipe unit, the outside, middle part that it is characterized in that described male joint is provided with bull zigzag tapering external screw thread, the externally threaded large end of tapering is all connected one section of cylinder with small end, and small end cylinder is positioned at the other end outside of male joint, its cylindrical end is seal face, the inner side, middle part of described female joint is provided with the tapering internal thread identical with public access head number, profile of tooth is identical, the large end of tapering internal thread is all connected one section of cylindrical hole with small end, and hold greatly cylindrical hole to be positioned at the other end inner side of female joint, in small end cylindrical hole, be provided with cannelure, small end cylindrical hole bottom is seal face, tapering external thread rotary in described male joint is combined in the tapering internal thread of female joint, and be matched in clearance between the connecting cylinder hole of the connecting cylinder of male joint tapering external screw thread small end and female joint tapering internal thread small end, between the connecting cylinder hole of the connecting cylinder of the large end of male joint tapering external screw thread and the large end of female joint tapering internal thread, be interference fit, the seal face at the bottom of the column sealed end face of male joint tapering external screw thread small end and female joint tapering internal thread small end cylindrical hole fits, described sealing ring is placed in the cannelure in female joint tapering internal thread small end cylindrical hole, the thread form oblique angle of described bull zigzag tapering external screw thread and bull zigzag tapering internal screw workpiece face is-the thread form oblique angle of 2o～-4o, non-working surface is 43o～47o, between described male joint and female joint, be respectively provided with multiple locating slots, and in the time screwing seal face at the bottom of inside and outside taper thread makes the column sealed end face of male joint tapering external screw thread small end and female joint tapering internal thread small end cylindrical hole and fit, in the multiple locating slots that are respectively provided with, the median plane of every two relative locating slots coincides, and forms complete multiple kidney slots, described multiple locating piece is fixed by screws in male joint and every locating piece lays respectively in a kidney slot.
The present invention connects by the inside and outside taper thread between male and female joint, make male and female joint in assembling process, reduce to greatest extent mounting distance, and by thering is the large helical pitch multiple thread of coupling mechanism force and pretightning force, the assembling rotating cycle (relatively rotating 1/2～3/4 circle after the pre-insertion of male and female joint can tighten) that farthest reduces joint, has improved connection speed.The rear end connecting at male and female joint screw thread utilizes radial interference fit to form sealing for the first time; On the radial fit face of male and female joint, utilize rubber seal to form soft seal for the second time; On the axial joint face of male and female joint, utilize the locking laminating of seal face between the two to form for the third time sealing firmly, make water proof (every sand) pipe unit form an entirety string, thereby reduce to greatest extent between water proof (every sand) pipe unit because of rocking that fit clearance causes, reduce to greatest extent the seawater seepage producing because rocking.
Marine riser in marine drilling process in the present invention has stable connection, assembling speed is fast, rigidity is large, good sealing effect, the advantage such as reusable; In desert drill process in the present invention every sand tube, have again that reasonable in design, anti-weight bearing power are strong, assembly technology simple, construction safety, cycle are short, timeliness advantages of higher.
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is I part-structure enlarged drawing in Fig. 1;
Fig. 3 is that A in Fig. 1 is to structure zoomed-in view.
In Fig. 1,2,3: 1,6 water proofs (every sand) pipe unit, 2 female joints, 201 seal faces, 202,203 cylindrical hole fitting faces, 3 sealing rings, 4 male joints, 401 seal faces, 402,403 cylindrical fit faces, 5 screws, 7 locating pieces.
Detailed description of the invention
As shown in Figure 1, one end of male joint 4 is welded on one end of water proof (every sand) pipe unit 6, one end of female joint 2 is welded on one end of water proof (every sand) pipe unit 1, the outside, middle part of male joint 4 is provided with four-head zigzag tapering external screw thread, the externally threaded large end of tapering is all connected one section of cylindrical fit face 402 and 403 with small end, and cylindrical fit face 402 is positioned at the other end outside of male joint 4, and its cylindrical end is seal face 401; The inner side, middle part of female joint 2 is provided with the tapering internal thread identical with public access head number, profile of tooth is identical, the large end of tapering internal thread is all connected one section of cylindrical hole fitting face 202 and 203 with small end, and cylindrical hole fitting face 203 is positioned at the other end inner side of female joint 2, in cylindrical hole fitting face 202, be provided with cannelure, the bottom of cylindrical hole fitting face 202 is seal face 201; Tapering external thread rotary in male joint 4 is combined in the tapering internal thread of female joint 2, and be matched in clearance between the cylindrical hole fitting face 202 of the cylindrical fit face 402 of male joint 4 tapering external screw thread small ends and female joint 2 tapering internal thread small ends, between the cylindrical hole fitting face 203 of the cylindrical fit face 403 of the large end of male joint 4 tapering external screw thread and the large end of female joint 2 tapering internal thread, be interference fit, the column sealed end face 401 of male joint 4 tapering external screw thread small end fits with the seal face 201 at the bottom of female joint 2 tapering internal thread small end cylindrical holes; Sealing ring 3 is placed in the cannelure in female joint 2 tapering internal thread small end cylindrical hole fitting faces 202.As shown in Figure 2, the thread form oblique angle of bull zigzag tapering external screw thread and bull zigzag tapering internal screw workpiece face be-the thread form oblique angle of 3o, non-working surface is 45o; Between male joint 4 and female joint 2, be respectively provided with four locating slots, in 4 locating slots that are respectively provided with in the time screwing inside and outside taper thread and the column sealed end face 401 of male joint 4 tapering external screw thread small end is fitted with the seal face 201 at the bottom of female joint 2 tapering internal thread small end cylindrical holes, the median plane of every two relative locating slots coincides, form four complete kidney slots as shown in Figure 3, locating piece 7 is four, four locating pieces 7 are fixed by screws in respectively in male joint 4, and every locating piece 7 lays respectively in a kidney slot.
When the present invention assembles, utilize the taper thread centering in male joint 4 and female joint 2, male joint 4 is inserted in female joint 2, complete the docking of water proof (every sand) pipe unit 6 and water proof (every sand) pipe unit 1; Fix female joint 2, block male joint 4 and turn clockwise male joint 4(rotation 1/4～3/4 circle by power jaw), meanwhile transfer male joint 4, by the torsion of Power Tong and the coupling mechanism force of screw thread, male joint 4 is docked completely with female joint 2, and seal face 401,201 is fitted tightly, realize thus the sealing for the first time of interference face between cylindrical fit face 403 and cylindrical hole fitting face 203 simultaneously; Soft seal for the second time between sealing ring 3 and cylindrical fit face 402; Sealing firmly for the third time between seal face 401 and seal face 201.After male joint 4 is connected completely with female joint 2, in four dock complete kidney slot, insert four locating pieces 7, and fastening by screw 5, thus make can not produce relative rotation between male joint 4 and female joint 2, to prevent that male and female joint from thread looseness in use occurring and throw off phenomenon.In the present invention, screw thread work plane tooth form oblique angle is set to 45o, be set to-3o of non-working surface tooth form, can reduce to greatest extent the contact of screw thread load surface, thereby greatly reduces the wearing and tearing of contact surface, effectively improves and reuses the life-span.
In marine drilling construction, as water proof (every the sand) pipe unit 6 in need dismounting the present invention, four locating pieces 7 in kidney slot between male joint 4 and female joint 2 need only be unloaded, male joint 4(1/4～3/4 circle is bitten and rotated counterclockwise to fixing female joint 2 use Power Tong jaws) after, on propose male joint 4 and can make male joint 4 and female joint 2 throw off completely, unload water proof (every sand) pipe unit 6.
In the site operation of desert, many water proofs (every sand) pipe unit 1 is connected to bunchiness with many water proofs (every sand tube) unit 6 on the rotating disk of rig floor, select derrick hoisting depth, select the pile hammer of hit energy abundance, under the prerequisite of not damaging joint, water proof (every sand) pipe unit string is squeezed into stratum, desert fast, in water proof (every sand) pipe unit string, be lowered to drilling rod again and open brill drilling well, the present invention is played and prevent that cave-in and top layer are every husky effect.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. a multiple thread fast joint type drilling well water proof (every sand) pipe, comprise two water proofs (every sand) pipe unit, a male joint, a female joint, many locating pieces, many screws, a sealing ring, described male joint is welded on one end of a water proof (every sand) pipe unit, described female joint is welded on one end of another water proof (every sand) pipe unit, it is characterized in that:
The middle part outside of described male joint is provided with bull zigzag tapering external screw thread, and the externally threaded large end of tapering is all connected one section of cylinder with small end, and small end cylinder is positioned at the other end outside of male joint, and its cylindrical end is seal face;
The inner side, middle part of described female joint is provided with the tapering internal thread identical with public access head number, profile of tooth is identical, the large end of tapering internal thread is all connected one section of cylindrical hole with small end, and hold greatly cylindrical hole to be positioned at the other end inner side of female joint, in small end cylindrical hole, be provided with cannelure, small end cylindrical hole bottom is seal face;
Tapering external thread rotary in described male joint is combined in the tapering internal thread of female joint, and be matched in clearance between the connecting cylinder hole of the connecting cylinder of male joint tapering external screw thread small end and female joint tapering internal thread small end, between the connecting cylinder hole of the connecting cylinder of the large end of male joint tapering external screw thread and the large end of female joint tapering internal thread, be interference fit, the seal face at the bottom of the column sealed end face of male joint tapering external screw thread small end and female joint tapering internal thread small end cylindrical hole fits.
2. a kind of multiple thread fast joint type drilling well water proof according to claim 1 (every sand) pipe, it is characterized in that being respectively provided with between described male joint and female joint multiple locating slots, and in the time screwing seal face at the bottom of inside and outside taper thread makes the column sealed end face of male joint tapering external screw thread small end and female joint tapering internal thread small end cylindrical hole and fit, in the multiple locating slots that are respectively provided with, the median plane of every two relative locating slots coincides, and forms complete multiple kidney slots.
3. a kind of multiple thread fast joint type drilling well water proof according to claim 1 (every sand) pipe, is characterized in that described sealing ring is placed in the cannelure in female joint tapering internal thread small end cylindrical hole.
4. a kind of multiple thread fast joint type drilling well water proof according to claim 1 (every sand) pipe, is characterized in that the thread form oblique angle of described bull zigzag tapering external screw thread and bull zigzag tapering internal screw workpiece face is-2o～-4o, the thread form oblique angle of non-working surface is 43o～47o.
5. a kind of multiple thread fast joint type drilling well water proof according to claim 2 (every sand) pipe, is characterized in that multiple locating pieces are fixed by screws in male joint and every locating piece lays respectively in a kidney slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569412.8A CN103899254B (en) | 2012-12-25 | 2012-12-25 | A kind of multiple thread fast joint type drilling riser (every sand) pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210569412.8A CN103899254B (en) | 2012-12-25 | 2012-12-25 | A kind of multiple thread fast joint type drilling riser (every sand) pipe |
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| CN103899254A true CN103899254A (en) | 2014-07-02 |
| CN103899254B CN103899254B (en) | 2019-03-19 |
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| CN201210569412.8A Active CN103899254B (en) | 2012-12-25 | 2012-12-25 | A kind of multiple thread fast joint type drilling riser (every sand) pipe |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594822A (en) * | 2014-09-30 | 2015-05-06 | 山东祺龙海洋石油钢管股份有限公司 | Fast connection device for four-end threaded conductor tube |
| CN105888573A (en) * | 2016-05-18 | 2016-08-24 | 建湖县永维阀门钻件有限公司 | Threaded connector of riser pipe |
| CN107605412A (en) * | 2017-10-19 | 2018-01-19 | 山东祺龙海洋石油钢管股份有限公司 | Hammer formula surface conductor pipe nipple |
| JP2018172861A (en) * | 2017-03-31 | 2018-11-08 | Ｊｆｅスチール株式会社 | Parallel threaded joint for structural steel pipe |
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| CN203066886U (en) * | 2012-12-25 | 2013-07-17 | 建湖县永维阀门钻件有限公司 | Multiple-start thread quick connecting type well drilling water-proof/sand-proof pipe |
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2012
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AU4474489A (en) * | 1989-03-08 | 1990-09-13 | Baroid Technology, Inc. | Threaded pipe joint having improved seal ring entrapment |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594822A (en) * | 2014-09-30 | 2015-05-06 | 山东祺龙海洋石油钢管股份有限公司 | Fast connection device for four-end threaded conductor tube |
| CN105888573A (en) * | 2016-05-18 | 2016-08-24 | 建湖县永维阀门钻件有限公司 | Threaded connector of riser pipe |
| CN105888573B (en) * | 2016-05-18 | 2017-02-22 | 建湖县永维阀门钻件有限公司 | Threaded connector of riser pipe |
| JP2018172861A (en) * | 2017-03-31 | 2018-11-08 | Ｊｆｅスチール株式会社 | Parallel threaded joint for structural steel pipe |
| CN107605412A (en) * | 2017-10-19 | 2018-01-19 | 山东祺龙海洋石油钢管股份有限公司 | Hammer formula surface conductor pipe nipple |
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| CN103899254B (en) | 2019-03-19 |
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