CN204851164U - Return and insert well cementation sealing device - Google Patents
Return and insert well cementation sealing device Download PDFInfo
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- CN204851164U CN204851164U CN201520516348.6U CN201520516348U CN204851164U CN 204851164 U CN204851164 U CN 204851164U CN 201520516348 U CN201520516348 U CN 201520516348U CN 204851164 U CN204851164 U CN 204851164U
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Abstract
(B, ) the utility model relates to an it is a return and insert well cementation sealing device to return and insert well cementation technical field, should include body, guiding head and composite seal device by this return and insert well cementation sealing device of (b) (b), the body is the tubulose, and guiding head is big -end -up's cone, and the guiding head lower extreme is the button head, and upper end outside an organic whole of guiding head is fixed with installs a section of thick bamboo, and the lower extreme and the installation section of thick bamboo fixed mounting of body are in the same place, a top -down fixed mounting composite seal device and the 2nd composite seal device on the outer wall of the upper portion of body, and top -down fixed mounting has the 3rd composite seal device and fourth composite seal device on the outer wall of the lower part of body. The utility model discloses use return and insert well cementation sealing device return insert the well cementation construction operation after, need not to use the provisional shutoff instrument that easily bores the bridging plug and guiding head easily to bore and remove, consequently, can simplify the flow chart, shorten operation procedure, reduction field device and personnel greatly and employ quantity to significantly reduced the site operation risk, reduceed the operating cost. (B, )
Description
Technical field
the utility model relates to go back to slotting cementing technology field, is a kind of time slotting well cementing sealer.
Background technology
along with the continuous increase of Low Permeability Oil/gas development of resources scale, Oil/gas Well segmentation renovation technique has become one of torsion low permeability oil and gas field many wells low yield, the important technical realizing few well high yield.Oil/gas Well segmentation transformation process at the middle and upper levels well section usually use extension hanger to cement the well, use after cementing operation operation and easily bore the packing that bridging plug sets the section of going into the well in realization in the tail pipe of extension hanger bottom, undertaken with sealing top well section by the conventional connection-peg that returns afterwards, after cementing operation operation completes, bore ash disposal plug and easily bore bridging plug and carry out the drilling well of lower layer section, until finishing drilling.After finishing drilling, under enter the pressing crack construction that pressing crack construction working pipe string carries out open-hole interval.This construction technology better can complete the construction operation flow processs such as the staged fracturing of top well cementation and bottom interval, but, returning what insert that well cementation adopts due to top is conventional return connection-peg, enter under needing and easily bore the packing that bridging plug realizes upper and lower interval, there is following shortcoming in this construction technology: the construction operations such as (1) enters under needing easily to bore bridging plug, set, complex procedures, operating risk are relatively large, and operating cost increases; (2) easily bore bridging plug not easily to bore except clean, under easily causing later stage fracturing string, enter difficulty.
Summary of the invention
the utility model provides and a kind of returns slotting well cementing sealer, overcomes the deficiency of above-mentioned prior art, its can effectively solve carry out back at present inserting well cementation complex procedures, operating risk comparatively greatly, high, the easy brill bridging plug of operating cost not easily bores except clean problem.
the technical solution of the utility model is realized by following measures: a kind of time slotting well cementing sealer, comprises body and seeker; Body in a tubular form, seeker is up big and down small cone, seeker lower end is round end, integrally mounting cylinder is fixed with outside the upper end of seeker, lower end and the mounting cylinder of body are fixedly installed togather, the external wall of upper portion of body fixedly mounts the first combination sealing arrangement and the second combination sealing arrangement from top to bottom, the bottom outer wall of body is installed with the 3rd combination sealing arrangement and the 4th combination sealing arrangement from top to bottom, the body between the second combination sealing arrangement and the 3rd combination sealing arrangement is circumferentially provided with the pressure transmission hole of at least one.
here is the further optimization and/or improvements to above-mentioned utility model technical scheme:
above-mentioned first combination sealing arrangement, the second combination sealing arrangement, the 3rd combination sealing arrangement and the 4th combination sealing arrangement include fixed cover, upper joint sleeve, sealing device, lower joint sleeve and lower fixed cover; In the lower inner wall of upper fixed cover, the upper inside wall of the upper and lower fixed cover of bottom outer wall of the upper and lower adapter sleeve of external wall of upper portion of upper joint sleeve all there is mounting groove, the mounting groove of upper fixed cover and the mounting groove of upper joint sleeve are fixedly installed togather, the mounting groove of lower joint sleeve and the mounting groove of lower fixed cover are fixedly installed togather, upper fixed cover and lower fixed cover are fixedly installed togather with body respectively, between upper joint sleeve and lower joint sleeve, be installed with sealing device.
above-mentioned upper fixed cover and lower fixed cover are fixedly installed togather by screw or pin with body respectively.
above-mentioned upper fixed cover and lower fixed cover are installed together by C ring with body respectively.
above-mentioned sealing device is chevron combination.
above-mentioned body between the second combination sealing arrangement and the 3rd combination sealing arrangement is uniformly distributed with the pressure transmission hole of four along the circumference; Or/and the lower end of seeker is for being aluminium alloys round end.
sealing ring is installed with between the above-mentioned lower end at body and mounting cylinder.
lower end and the mounting cylinder of above-mentioned body are fixedly installed togather by screw thread.
trip bolt is installed with between the above-mentioned lower end at body and mounting cylinder.
after the utility model uses back slotting well cementing sealer to carry out back slotting cementing operation operation, without the need to using the temporary blocking instrument that easily bores bridging plug and seeker easily bores and removes, therefore, flow chart can be simplified, greatly shorten work flow, reduce site plant and personnel and employ quantity, thus greatly reduce site operation risk, reduce operating cost.
Accompanying drawing explanation
accompanying drawing 1 is that the master returning slotting well cementing sealer upper part most preferred embodiment in the utility model looks half section structural representation.
accompanying drawing 2 is that the master returning slotting well cementing sealer lower part most preferred embodiment in the utility model looks half section structural representation.
accompanying drawing 3 is the structure for amplifying schematic diagram of the first combination sealing arrangement in the utility model, the second combination sealing arrangement, the 3rd combination sealing arrangement and the 4th combination sealing arrangement.
accompanying drawing 4 is the structural representation of extension hanger well cementation in the utility model.
accompanying drawing 5 is return the structural representation inserting well cementation note ash in the utility model.
accompanying drawing 6 is return in the utility model to insert the solidifying structural representation of well cementation time.
accompanying drawing 7 is the structural representation boring ash disposal plug, seeker and finishing drilling in the utility model.
coding in accompanying drawing is respectively: 1 is body, 2 is seeker, and 3 is mounting cylinder, and 4 is the first combination sealing arrangement, 5 is the second combination sealing arrangement, 6 is the 3rd combination sealing arrangement, and 7 is the 4th combination sealing arrangement, and 8 is pressure transmission hole, 9 are back slotting well cementing sealer, 10 is extension hanger tie-back sleeve, and 11 is upper fixed cover, and 12 is upper joint sleeve, 13 is sealing device, 14 is lower joint sleeve, and 15 is lower fixed cover, and 16 is C ring, 17 is sealing ring, 18 is trip bolt, and 19 is extension hanger, and 20 are back slotting well cementing pipe string.
Detailed description of the invention
the utility model by the restriction of following embodiment, can not determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is all be described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. determines according to the Butut direction of Figure of description.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
embodiment 1, as shown in accompanying drawing 1,2,3, this time slotting well cementing sealer 9 comprises body 1 and seeker 2, body 1 in a tubular form, seeker 2 is up big and down small cone, seeker 2 lower end is round end, mounting cylinder 3 is integrally fixed with outside the upper end of seeker 2, lower end and the mounting cylinder 3 of body 1 are fixedly installed togather, the external wall of upper portion of body 1 fixedly mounts the first combination sealing arrangement 4 and the second combination sealing arrangement 5 from top to bottom, the bottom outer wall of body 1 is installed with the 3rd combination sealing arrangement 6 and the 4th combination sealing arrangement 7 from top to bottom, body 1 between the second combination sealing arrangement 5 and the 3rd combination sealing arrangement 6 is circumferentially provided with the pressure transmission hole 8 of at least one.Seeker 2 is up big and down small cone, the lower end of seeker 2 is round end, be convenient to the importing of this time slotting well cementing sealer 9, when this time slotting well cementing sealer 9 enters in extension hanger tie-back sleeve 10,3rd combination sealing arrangement 6 and the 4th combination sealing arrangement 7 realize the sealing between body 1 and extension hanger tie-back sleeve 10, pressure transmission hole 8 is convenient to the connection inside and outside body 1, can realize back intubate post note grey construction operation by pressure transmission hole 8; After grey operation completes when note, under continuation, enter the sealing that this time slotting well cementing sealer 9, first combination sealing arrangement 4 and the second combination sealing arrangement 5 realize between body 1 and extension hanger tie-back sleeve 10 further; This time slotting well cementing sealer 9 possess back insert, sealing and packing three kinds of functions up and down, finally bore except seeker 2, remove without the need to using the temporary blocking instrument that easily bores bridging plug and easily boring, therefore, simply, construction risk and operating cost reduce work flow greatly.
embodiment 2, as shown in accompanying drawing 1,2,3, preferred as embodiment 1, the first combination sealing arrangement 4, second combination sealing arrangement 5, the 3rd combination sealing arrangement 6 and the 4th combination sealing arrangement 7 include fixed cover 11, upper joint sleeve 12, sealing device 13, lower joint sleeve 14 and lower fixed cover 15; In the lower inner wall of upper fixed cover 11, the upper inside wall of the upper and lower fixed cover 15 of bottom outer wall of the upper and lower adapter sleeve of external wall of upper portion 14 of upper joint sleeve 12 all there is mounting groove, the mounting groove of upper fixed cover 11 and the mounting groove of upper joint sleeve 12 are fixedly installed togather, the mounting groove of lower joint sleeve 14 and the mounting groove of lower fixed cover 15 are fixedly installed togather, upper fixed cover 11 and lower fixed cover 15 are fixedly installed togather with body 1 respectively, are installed with sealing device 15 between upper joint sleeve 12 and lower joint sleeve 14.
embodiment 3, as required, preferred as embodiment 2, upper fixed cover 11 and lower fixed cover 15 are fixedly installed togather by screw or pin with body 1 respectively.
embodiment 4, as shown in accompanying drawing 1,2,3, preferred as embodiment 2, upper fixed cover 11 and lower fixed cover 15 are installed together by C ring 16 with body 1 respectively.In practical application, C ring 16 can not only meet body 1 and the installation strength between upper fixed cover 11 and lower fixed cover 15, and easy for installation.
embodiment 5, as shown in accompanying drawing 1,2,3, preferred as embodiment 2, embodiment 3 and embodiment 4, sealing device 13 is chevron combination.Chevron combination has good sealing function, and chevron is combined as existing known technology.
embodiment 6, as shown in accompanying drawing 1,2,3, preferred as above-described embodiment, the body 1 between the second combination sealing arrangement 5 and the 3rd combination sealing arrangement 6 is uniformly distributed with the pressure transmission hole 8 of four along the circumference; Or/and the lower end of seeker 2 is for being aluminium alloys round end.Four pressure transmission holes 8 can carry out noting grey operation preferably; The lower end of seeker 2, for being aluminium alloys round end, facilitates brill to remove.
embodiment 7, as required, preferred as above-described embodiment, is installed with sealing ring 17 between the lower end of body 1 and mounting cylinder 3.
embodiment 8, as shown in accompanying drawing 1,2,3, preferred as above-described embodiment, lower end and the mounting cylinder 3 of body 1 are fixedly installed togather by screw thread.Be threaded and facilitate installation and removal.
embodiment 9, as shown in accompanying drawing 1,2,3, preferred as embodiment 7, is installed with trip bolt 18 between the lower end of body 1 and mounting cylinder 3.Trip bolt 18 prevents from, between mounting cylinder 3 and body 1, radial rotating occurs, for the smooth enforcement of this time slotting well cementing sealer provides safeguard.
use above-described embodiment to return slotting well cementing sealer to carry out back slotting cementing method and carry out in the steps below: the first step, carry out extension hanger 19 and cement the well, extension hanger 19 is fixedly connected with extension hanger tie-back sleeve 10, as shown in Figure 4; Second step, slotting well cementing sealer 9 will be returned be connected with time slotting well cementing pipe string 20, G.I.H, return slotting well cementing sealer 9 enters in extension hanger tie-back sleeve 10 under the guiding of seeker 2,3rd combination sealing arrangement 5 and the 4th combination sealing arrangement 6 seal between body 1 and extension hanger tie-back sleeve 10, on carry back slotting well cementing pipe string 20, pressure transmission hole 8 above extension hanger tie-back sleeve 10, be exposed between body 1 and the borehole wall annular space in, as shown in Figure 5; 3rd step, is undertaken back inserting the grey construction operation of well cementation note by pressure transmission hole 8, as shown in Figure 2; 4th step, note after grey construction operation completes, under put back to slotting well cementing sealer 9 and return slotting well cementing pipe string 20, returning slotting well cementing sealer 9 enters in extension hanger tie-back sleeve 10 completely, first combination sealing arrangement 4 and the second combination sealing arrangement 5, the 3rd combination sealing arrangement 6 and the 4th combination sealing arrangement 7 seal respectively between body 1 and extension hanger tie-back sleeve 10, as shown in Figure 6, after cement paste to be implanted solidifies completely, return the grey construction operation of slotting well cementation note and complete; 5th step, return after inserting well cementation note grey construction operation completing, ash plug is formed after returning cement slurry sets remaining in slotting well cementing pipe string 20, under enter well casing string, carry out back the brill of ash plug in slotting well cementing pipe string 20 except the brill with seeker 2 is except operation, return after ash plug in slotting well cementing pipe string 20 and seeker 2 bore and remove, carry out follow-up drilling well and pressing crack construction operation, as shown in Figure 7.
it is a kind of easy and simple to handle for returning slotting well cementing sealer 9, the novel time connection-peg that reliability is high, seeker 2 is easy to back insert import and bore and removes, possess back slotting, sealing, up and down packing three functions simultaneously, easily bridging plug is bored without the need to using, therefore, simple, the construction risk of work flow and operating cost reduce greatly.Effective exploitation for low-permeability oil gas well provides robust techniques guarantee.
after the utility model uses back slotting well cementing sealer 9 to carry out back slotting cementing operation operation, without the need to using the temporary blocking instrument that easily bores bridging plug and seeker easily bores and removes, therefore, flow chart can be simplified, greatly shorten work flow, reduce site plant and personnel and employ quantity, thus greatly reduce site operation risk, reduce operating cost.
above technical characteristic constitutes embodiment of the present utility model, and it has stronger compliance and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. return a slotting well cementing sealer, it is characterized in that comprising body and seeker; Body in a tubular form, seeker is up big and down small cone, seeker lower end is round end, integrally mounting cylinder is fixed with outside the upper end of seeker, lower end and the mounting cylinder of body are fixedly installed togather, the external wall of upper portion of body fixedly mounts the first combination sealing arrangement and the second combination sealing arrangement from top to bottom, the bottom outer wall of body is installed with the 3rd combination sealing arrangement and the 4th combination sealing arrangement from top to bottom, the body between the second combination sealing arrangement and the 3rd combination sealing arrangement is circumferentially provided with the pressure transmission hole of at least one.
2. according to claim 1 time slotting well cementing sealer, is characterized in that the first combination sealing arrangement, the second combination sealing arrangement, the 3rd combination sealing arrangement and the 4th combination sealing arrangement include fixed cover, upper joint sleeve, sealing device, lower joint sleeve and lower fixed cover; In the lower inner wall of upper fixed cover, the upper inside wall of the upper and lower fixed cover of bottom outer wall of the upper and lower adapter sleeve of external wall of upper portion of upper joint sleeve all there is mounting groove, the mounting groove of upper fixed cover and the mounting groove of upper joint sleeve are fixedly installed togather, the mounting groove of lower joint sleeve and the mounting groove of lower fixed cover are fixedly installed togather, upper fixed cover and lower fixed cover are fixedly installed togather with body respectively, between upper joint sleeve and lower joint sleeve, be installed with sealing device.
3. according to claim 2 time slotting well cementing sealer, is characterized in that fixed cover and lower fixed cover are fixedly installed togather by screw or pin with body respectively; Or upper fixed cover and lower fixed cover are installed together by C ring with body respectively.
4. time slotting well cementing sealer according to Claims 2 or 3, is characterized in that sealing device is chevron combination.
5. time slotting well cementing sealer according to claim 1 or 2 or 3, is characterized in that the pressure transmission hole body between the second combination sealing arrangement and the 3rd combination sealing arrangement being uniformly distributed with four along the circumference; Or/and the lower end of seeker is for being aluminium alloys round end; Or/and, be installed with sealing ring between the lower end of body and mounting cylinder.
6. according to claim 4 time slotting well cementing sealer, is characterized in that the pressure transmission hole body between the second combination sealing arrangement and the 3rd combination sealing arrangement being uniformly distributed with four along the circumference; Or/and the lower end of seeker is for being aluminium alloys round end; Or/and, be installed with sealing ring between the lower end of body and mounting cylinder.
7. time slotting well cementing sealer according to claim 1 or 2 or 3 or 6, is characterized in that the lower end of body and mounting cylinder are fixedly installed togather by screw thread.
8. according to claim 4 time slotting well cementing sealer, is characterized in that the lower end of body and mounting cylinder are fixedly installed togather by screw thread.
9. according to claim 5 time slotting well cementing sealer, is characterized in that the lower end of body and mounting cylinder are fixedly installed togather by screw thread.
10. according to claim 9 time slotting well cementing sealer, is characterized in that being installed with trip bolt between the lower end and mounting cylinder of body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516348.6U CN204851164U (en) | 2015-07-17 | 2015-07-17 | Return and insert well cementation sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520516348.6U CN204851164U (en) | 2015-07-17 | 2015-07-17 | Return and insert well cementation sealing device |
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| CN204851164U true CN204851164U (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520516348.6U Active CN204851164U (en) | 2015-07-17 | 2015-07-17 | Return and insert well cementation sealing device |
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| CN (1) | CN204851164U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064948A (en) * | 2015-07-17 | 2015-11-18 | 中国石油集团西部钻探工程有限公司 | Back-inserting cementing sealing device and back-inserting cementing method |
-
2015
- 2015-07-17 CN CN201520516348.6U patent/CN204851164U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105064948A (en) * | 2015-07-17 | 2015-11-18 | 中国石油集团西部钻探工程有限公司 | Back-inserting cementing sealing device and back-inserting cementing method |
| CN105064948B (en) * | 2015-07-17 | 2018-09-07 | 中国石油集团西部钻探工程有限公司 | It returns slotting well cementing sealer and returns slotting cementing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201110 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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| TR01 | Transfer of patent right |