CN102337853A - Circulating drilling-free blind plate cementing device - Google Patents
Circulating drilling-free blind plate cementing device Download PDFInfo
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- CN102337853A CN102337853A CN2011102535835A CN201110253583A CN102337853A CN 102337853 A CN102337853 A CN 102337853A CN 2011102535835 A CN2011102535835 A CN 2011102535835A CN 201110253583 A CN201110253583 A CN 201110253583A CN 102337853 A CN102337853 A CN 102337853A
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Abstract
The invention relates to a circulating drilling-free blind plate cementing device for semi-stroke cementation and plug-free cementation of a horizontal well for oil drilling. In particular, the circulating drilling-free blind plate cementing device comprises a diverting short joint, a circulating short joint and a sealing rubber ring and is characterized in that the circulating short joint is arranged in the diverting short joint and is fixedly connected with the diverting short joint through a fixing bracket and a fixing shear pin; a seat sealing rubber cylinder is arranged in the circulating short joint and is fixedly connected with a fishing short joint; a seat sealing flange is arranged outside the seat sealing rubber cylinder; and a sealing protective cover is arranged outside the diverting short joint, a closing spring and a seat sealing slide sleeve are arranged in the sealing protective cover, and the lower end of the diverting short joint is linked with a casing packer hoop through a threaded buckle and is sealed by the sealing rubber ring. The casing wear, window opening and borehole rejection caused by drilling blockage during cementation can be avoided.
Description
Technical field
Patent of the present invention relates to oil drilling horizontal well half way well cementation, does not stay the formula a kind of capable of circulation of plug well cementation to exempt to bore the blind plate cementing unit, especially: circulatingly exempt to bore the blind plate cementing unit.
Background technology
At present: the horizontal well half way is cemented the well and adopted 1 more, bores the blind plate cementing technology: it is the cementing technology that generally adopts both at home and abroad that well cementation Hou Ning brill is filled in; Boring blind plate is prone to cause new well to scrap casing sidetracking; Because bore the attenuation of blind plate casing wear, this is prone to fracture and leakage phenomena during gas injection; Shorten the oil well production life-span, hidden danger is more.2, do not circulate and exempt to bore the blind plate cementing technology: this technology exists a lot of defectives and deficiency equally, as: be prone to bit freezing during salvaging and cause down-hole accident; In addition: the open hole packer packing element diameter expansion 70-80mm that the experiment proof is used now, packing element two ends sulfide site just breaks during pressure 4-6MPa, and it is real that therefore conventional open hole packer is prone to bad sealing, causes cement paste string layer to produce cement plug; Also have: the setting of casing turn on pump circulation unfreezing in time that is hampered is prone to cause the down-hole lock of tool drilling; Have again: salvage the highest greatly salvaging tonnage of tonnage and surpass more than 80 tons, have handling safety hidden danger; Be prone to circulation canal when operating and close, cause and beat grey perforation well cementation brill plug or the like the down-hole accident of filling in owing to security performance is low; Last experimental data proof exempts from bore blind plate well cementation with interior than the shallow water horizontal well to vertical depth 1000m; The packer majority does not work; The little cement paste string of pressure reduction layer probability is less; Loose and the darker well in stratum does not circulate and exempts to bore the blind plate cementing unit, because of packer and the defective of instrument own are prone to cement paste string layer phenomenon.The oil field practice application success rate was about 70-80% in 2010-2011.Each oil field all occurred in the half way well cementation process every year both at home and abroad in recent years; Bore blind plate and scrap new well and exempt to bore blind plate failure phenomenon, cause the tremendous economic loss.
Summary of the invention:
Goal of the invention of the present invention is: a kind of circulating blind plate cementing unit of exempting to bore is provided: this is circulating exempts to bore the blind plate cementing unit self-monitoring packer set safeties is housed; Safe and reliable, simple in structure: as to adopt conventional constructing operation process, annotated the bruising of the direct moulding plug of mortar; The cement paste that possibly occur to the down-hole pours in down a chimney, sand card, well head junk, sleeve pipe modification have corresponding accident treatment measure; Can prevent the various accident generations of meeting; Adapt to various do not stay plug well cementation, half way well cementation, ultradeep well well cementation uses; Owing to designed safety prevention measure, guarantee that packer valid block envelope is intact, avoid down-hole accidents such as cement paste string layer.
To achieve these goals, the present invention is achieved in that the circulating blind plate cementing unit of exempting to bore, by: shunting pipe nipple, circulating sub and O-ring seal are formed; It is characterized in that: shunting be equipped with in the pipe nipple circulating sub through fixed support and fixedly shear pin interfix, adopt the O-ring seal sealing, on fixed support, tied up locking spring and played the support bracket fastened effect of tightening up; A sealing tube and junk sub are housed through fixing in circulating sub; Wherein: junk sub adopts snap ring to fix, and junk sub is fixed a sealing tube guest performer simultaneously; Seat sealing tube is designed with a Feng Faer outward, and seat Feng Faer can get into a sealing tube shutoff circulation canal under pressure; The shunting pipe nipple is equipped with outward to be equipped with in sealed shield, the sealed shield closes spring and seat envelope sliding sleeve; Wherein: close spring and seat envelope sliding sleeve and be fixed between shunting pipe nipple and the sealed shield through fixing shear pin, adopt the O-ring seal sealing, form annular space, annular space plays the effect that base sealed packer, prevention cement pour in down a chimney; Withstand seat envelope sliding sleeve owing to close spring force, close the effect that spring top clamping seat envelope sliding sleeve is closed automatically; Shunting pipe nipple lower end links through screw thread with the casing packer box cupling and adopts the O-ring seal sealing, and wherein: the packer box cupling is provided with the pressure transfer hole and is communicated with circulating opening; The unfreezing of turn on pump circulation at any time is hampered in the setting of casing process; Sleeve pipe during down to assigned address the turn on pump circulation drop into shutoff circulation canal in a seat Feng Faer, the present sealing tube of a seat Feng Faer seat; Liquid passes to packer box cupling pressure transfer hole through circulating opening and gets into packer packing seat envelope; Close at restriction pressure effect lower packet box cupling pressure transfer hole and to open a seat envelope sliding sleeve simultaneously; Circulation cement slurry cementing, throwing plug bruising Hou Ning finish, and pull the circulating sub related accessories out and reach the purpose of exempting to bore plug.Wherein: fixed support, fixedly shear pin, locking spring part also can adopt retainingf key, tailstock or baffle plate, and fixedly slide block replaces; A seat Feng Faer entering seat sealing tube plays shutoff sleeve pipe circulation canal, prevents to go here and there on the end pressure under the packer and pour in down a chimney phenomenon under pressure; Because seat sealing tube is mainly reflected in the necking part, the necking part also can be designed as: the protruding again necking of latus rectum elder generation's groove, the direct protruding necking of latus rectum, the direct protruding circular arc necking of latus rectum or protruding square.
The beneficial effect of patent of the present invention is: in the shunting pipe nipple, circulating sub is housed; Through fixed support and fixedly shear pin interfix; Locking spring is banded in and plays the support bracket fastened effect of tightening up on the fixed support; A sealing tube and junk sub are housed through the fixing junk sub of fixing snap ring in the circulating sub, a Feng Faer gets into a sealing tube shutoff circulation canal under pressure, shunts pipe nipple and is equipped with outward to be equipped with in sealed shield, the sealed shield and closes spring; Close spring force and withstand seat envelope sliding sleeve; Closing spring and seat envelope sliding sleeve is fixed on annular space between shunting pipe nipple and the sealed shield through fixing shear pin and plays the effect that base sealed packer, prevention cement pour in down a chimney; Close the effect that spring top clamping seat envelope sliding sleeve is closed automatically; Shunting pipe nipple lower end links through screw thread with the casing packer box cupling, the unfreezing of turn on pump circulation at any time that in the setting of casing process, is hampered, and the turn on pump circulation drops into shutoff circulation canal in the present sealing tube of seat Feng Faer when putting in place under the sleeve pipe; Liquid passes to packer box cupling pressure transfer hole through circulating opening and gets into packer packing seat envelope; Close at restriction pressure effect lower packet box cupling pressure transfer hole and to open a seat envelope sliding sleeve simultaneously, the circulation cement slurry cementing, throw plug bruising Hou Ning and finish, salvage the circulating sub associated accessory and reach the purpose of exempting to bore plug; Avoid boring plug and cause that down-hole casing weares and teares, windows, well is scrapped phenomenon because of well cementation.
Description of drawings
Below in conjunction with accompanying drawing and embodiment patent of the present invention is further specified.
Fig. 1 is the circulating blind plate cementing unit profile construction schematic diagram of exempting to bore.
Fig. 2 is circulating second kind of design scheme sketch map exempting to bore fixed support part in the blind plate cementing unit.
Fig. 3 is circulating the third design scheme sketch map of exempting to bore fixed support part in the blind plate cementing unit.
Fig. 4 is the circulating second kind of design scheme sketch map of seat sealing tube in the blind plate cementing unit of exempting to bore.
Fig. 5 is circulating the third design scheme sketch map of seat sealing tube in the blind plate cementing unit of exempting to bore.
Fig. 6 is circulating the 4th kind of design scheme sketch map of seat sealing tube in the blind plate cementing unit of exempting to bore.
Fig. 1: shunting pipe nipple 1, circulating sub 2, sealed shield 3, close spring 4, junk sub, seat envelope shear pin 6, seat envelope sliding sleeve 7, fixedly snap ring 8, seat sealing tube 9, a Feng Faer 10, fixed support 11, fixedly shear pin 12, locking spring 13, packer box cupling 14, O-ring seal 15.
Fig. 2: retainingf key 16, tailstock 17.
Fig. 3: baffle plate 18, fixing slide block 19.
The specific embodiment
According to accompanying drawing the present invention is done further explanation below: circulatingly exempt to bore the blind plate cementing unit; By: shunting pipe nipple, circulating sub and O-ring seal are formed: circulating sub 2 is housed in shunting pipe nipple 1 interfixes, adopt O-ring seal 15 to seal through fixed support 11 and fixing shear pin 12, on fixed support 11, tie up locking spring 13 and play the effect of tightening up fixed support 11; A sealing tube 9 is housed in circulating sub 2 to be passed through fixing with junk sub 5; Wherein: snap ring 8 is junk sub 5 fixedly, and junk sub 5 is fixed sealing tube 9 guest performer simultaneously; The seat sealing tube 9 outer Feng Faer 10 that are designed with, seat Feng Faer 10 can get into a sealing tube 9 shutoff circulation canals under pressure; Be equipped with outside the shunting pipe nipple 1 to be equipped with in sealed shield 3 sealed shields 3 and close a spring 4 and a seat envelope sliding sleeve 7; Wherein: close spring 4 and seat envelope sliding sleeve 7 and be fixed between shunting pipe nipple 1 and the sealed shield 3 through fixing shear pin 6, adopt O-ring seal 15 sealings, form annular space, annular space plays the effect that base sealed packer, prevention cement pour in down a chimney; Withstand seat envelope sliding sleeve 7 owing to close spring 4 elastic force, close spring 4 and hold out against the effect that seat envelope sliding sleeve 7 is closed automatically; Shunting pipe nipple 1 lower end links through screw thread with casing packer box cupling 14 and adopts O-ring seal 15 sealings, and wherein: packer box cupling 14 is provided with the pressure transfer hole and is communicated with circulating opening; The unfreezing of turn on pump circulation at any time is hampered in the setting of casing process; The turn on pump circulation dropped into shutoff circulation canal in 10 present sealing tubes 9 of 10 Feng Faer of seat Feng Faer when sleeve pipe arrived assigned address down; Liquid passes to packer box cupling 14 pressure transfer holes through circulating opening and gets into packer packing seat envelope; Close at restriction pressure effect lower packet box cupling 14 pressure transfer holes and to open a seat envelope sliding sleeve 7 simultaneously; Circulation cement slurry cementing, throwing plug bruising Hou Ning finish, and pull circulating sub 2 related accessories out and reach the purpose of exempting to bore plug.Wherein: fixed support 11, fixedly shear pin 12, locking spring 13 parts also can adopt 16 retainingf keys, 17. tailstocks or 18 baffle plates, 19. fixedly slide block replace; Adopt retainingf keys 16 or fixing slide block 19 like (Fig. 2, shown in Figure 3) fixed support 11, play fixed support 11, remove increase tailstock 17 among locking spring 13 Fig. 2; In Fig. 3, increase baffle plate 18.Seat Feng Faer 10 entering seat sealing tubes 9 play shutoff sleeve pipe circulation canal, prevent to go here and there on the end pressure under the packer and pour in down a chimney phenomenon under pressure; Because seat sealing tube 9 is mainly reflected in a mouthful necking part, so a mouthful necking part also can be designed as: the protruding again necking of latus rectum elder generation's groove, the direct protruding necking of latus rectum, the direct protruding circular arc necking of latus rectum or protruding square are shown in (Fig. 4, Fig. 5, Fig. 6).
Claims (8)
1. circulatingly exempt to bore the blind plate cementing unit for one kind, by: shunting pipe nipple, circulating sub and O-ring seal are formed; It is characterized in that: shunting be equipped with in the pipe nipple circulating sub through fixed support and fixedly shear pin interfix, adopt the O-ring seal sealing, on fixed support, tied up locking spring and played the support bracket fastened effect of tightening up; A sealing tube and junk sub are housed through fixing in circulating sub; Seat sealing tube is designed with a Feng Faer outward, and seat Feng Faer can get into a sealing tube shutoff circulation canal under pressure; The shunting pipe nipple is equipped with outward to be equipped with in sealed shield, the sealed shield closes spring and a seat envelope sliding sleeve shunting pipe nipple lower end and link the employing O-ring seal with the casing packer box cupling through screw thread and seal; Wherein: the packer box cupling is provided with the pressure transfer hole and is communicated with circulating opening; The unfreezing of turn on pump circulation at any time is hampered in the setting of casing process; Sleeve pipe during down to assigned address the turn on pump circulation drop into shutoff circulation canal in a seat Feng Faer, the present sealing tube of a seat Feng Faer seat; Liquid passes to packer box cupling pressure transfer hole through circulating opening and gets into packer packing seat envelope; Close at restriction pressure effect lower packet box cupling pressure transfer hole and to open a seat envelope sliding sleeve simultaneously; Circulation cement slurry cementing, throwing plug bruising Hou Ning finish, and pull the circulating sub related accessories out and reach the purpose of exempting to bore plug.
2. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: junk sub adopts snap ring to fix, and junk sub is fixed a sealing tube guest performer simultaneously.
3. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: close spring and seat envelope sliding sleeve and be fixed on through fixing shear pin and shunt between pipe nipple and the sealed shield; The sealing of employing O-ring seal; Form annular space, the effect that annular space plays base sealed packer, stops cement to pour in down a chimney.
4. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: withstand seat envelope sliding sleeve owing to close spring force, close the effect that spring top clamping seat envelope sliding sleeve is closed automatically; In shunting circulating sub being housed in the pipe nipple interfixes, adopts O-ring seal to seal through retainingf key and tailstock by fixing shear pin.
5. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: shunting be equipped with in the pipe nipple circulating sub through baffle plate and fixedly slide block interfix, adopt O-ring seal to seal by fixing shear pin.
6. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: seat sealing nozzle necking partial design is: the protruding again necking of latus rectum elder generation's groove.
7. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: seat sealing nozzle necking partial design is: the direct protruding necking of latus rectum.
8. the circulating blind plate cementing unit of exempting to bore according to claim 1: it is characterized in that: seat sealing nozzle necking partial design is: the direct protruding circular arc necking of latus rectum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253583.5A CN102337853B (en) | 2011-08-31 | 2011-08-31 | Circulating drilling-free blind plate cementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110253583.5A CN102337853B (en) | 2011-08-31 | 2011-08-31 | Circulating drilling-free blind plate cementing device |
Publications (2)
| Publication Number | Publication Date |
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| CN102337853A true CN102337853A (en) | 2012-02-01 |
| CN102337853B CN102337853B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110253583.5A Expired - Fee Related CN102337853B (en) | 2011-08-31 | 2011-08-31 | Circulating drilling-free blind plate cementing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835677A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Two-stage sealing bumping-pressure salvageable well completion device for horizontal well |
| CN103835678A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Horizontal well inner-pipe-free drilling-plug-free grading cementing well completion method |
| CN104790905A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Reciprocating circular blind plate device |
| CN106555562A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Displacement control homing position type is from grouting blind plate |
| CN108625817A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Small size is exempted to bore plug completion tool |
| CN111749642A (en) * | 2020-08-11 | 2020-10-09 | 中国石油集团渤海钻探工程有限公司 | Novel pressure control integrated upper sealing well completion tool |
| CN112343540A (en) * | 2019-08-08 | 2021-02-09 | 中国石油化工股份有限公司 | Packing type staged cementing device, well cementation pipe column and well cementation method |
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| SU994690A1 (en) * | 1981-06-23 | 1983-02-07 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Sleeve for stagewise cementing of casings |
| CN201310319Y (en) * | 2008-12-16 | 2009-09-16 | 西部钻探克拉玛依钻井工艺研究院 | Half-way cementing tool without drilling plug |
| CN101725330A (en) * | 2009-11-03 | 2010-06-09 | 山东普瑞思德石油技术有限公司 | Drilling-and-plugging-free well fixing method and tool |
| CN201568013U (en) * | 2009-10-30 | 2010-09-01 | 中国石油化工股份有限公司 | Two-stage cementer free from drilling |
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2011
- 2011-08-31 CN CN201110253583.5A patent/CN102337853B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU994690A1 (en) * | 1981-06-23 | 1983-02-07 | Всесоюзный научно-исследовательский институт по креплению скважин и буровым растворам | Sleeve for stagewise cementing of casings |
| CN201310319Y (en) * | 2008-12-16 | 2009-09-16 | 西部钻探克拉玛依钻井工艺研究院 | Half-way cementing tool without drilling plug |
| CN201568013U (en) * | 2009-10-30 | 2010-09-01 | 中国石油化工股份有限公司 | Two-stage cementer free from drilling |
| CN101725330A (en) * | 2009-11-03 | 2010-06-09 | 山东普瑞思德石油技术有限公司 | Drilling-and-plugging-free well fixing method and tool |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103835677A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Two-stage sealing bumping-pressure salvageable well completion device for horizontal well |
| CN103835678A (en) * | 2014-03-21 | 2014-06-04 | 青岛吉安泰耐磨密封材料有限公司 | Horizontal well inner-pipe-free drilling-plug-free grading cementing well completion method |
| CN104790905A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Reciprocating circular blind plate device |
| CN104790905B (en) * | 2015-04-09 | 2017-05-17 | 中国石油集团西部钻探工程有限公司 | Reciprocating circular blind plate device |
| CN106555562A (en) * | 2015-09-24 | 2017-04-05 | 中国石油化工股份有限公司 | Displacement control homing position type is from grouting blind plate |
| CN108625817A (en) * | 2017-03-23 | 2018-10-09 | 中石化石油工程技术服务有限公司 | Small size is exempted to bore plug completion tool |
| CN112343540A (en) * | 2019-08-08 | 2021-02-09 | 中国石油化工股份有限公司 | Packing type staged cementing device, well cementation pipe column and well cementation method |
| CN111749642A (en) * | 2020-08-11 | 2020-10-09 | 中国石油集团渤海钻探工程有限公司 | Novel pressure control integrated upper sealing well completion tool |
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| CN102337853B (en) | 2015-05-20 |
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Granted publication date: 20150520 Termination date: 20170831 |