CN203978355U - Multi-functional local reverse-circulation seating nipple - Google Patents
Multi-functional local reverse-circulation seating nipple Download PDFInfo
- Publication number
- CN203978355U CN203978355U CN201420456117.6U CN201420456117U CN203978355U CN 203978355 U CN203978355 U CN 203978355U CN 201420456117 U CN201420456117 U CN 201420456117U CN 203978355 U CN203978355 U CN 203978355U
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- China
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- circulation
- central tube
- internal lining
- urceolus
- lining pipe
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Abstract
The utility model discloses a kind of multi-functional local reverse-circulation seating nipple, it comprises top connection, urceolus, internal lining pipe, central tube joint, central tube and sand filter, and internal lining pipe top connects plug, and both sides cutting tip wall thickness, becomes anti-circulation canal as direct circulation; On the tube wall of the upper and lower two ends of urceolus, be shaped with how group direct circulation becomes anti-loop exit and anti-circulation change direct circulation outlet; Central tube joint top connects urceolus, bottom adapter sleeve milling tool, and joint internal thread connects central tube base, and for connecting central tube, central tube base can need to dismantle the loose-leaf that changes the outfit according to construction, and sand filter is made up of three-dimensional filter sand net group.The utility model has been realized the safe and efficient cover milling operation to absorption well, high-angle wells and horizontal wells, improve the cleaning effect of chip and small falling object, avoid lock of tool drilling, and can realize the anti-safe milling of windowing and repair casing operation, integrate that cover milling, chip are fished for, small falling object is salvaged and stop collar milling etc. multi-functional.
Description
Technical field
The utility model relates to oil well technical field of tools, especially a kind ofly integrates that cover milling, chip are fished for, small falling object is salvaged and the multi-functional multi-functional local reverse-circulation seating nipple such as stop collar milling.
Background technology
Cover, milling operation are heavy repair task common technologies, exist at present many factors to have a strong impact on cover milling engineering safety and efficiency of construction.The one, pit shaft leakage is serious, cannot realize effective operational discharge capacity, causes chip cleaning unclean; The 2nd, hole deviation reason causes chip to return out, is deposited on sleeve pipe one side and causes lock of tool drilling; The 3rd, cover is repaiied in old well milling, very easily causes casing sidetracking accident; The 4th, drop in a large number loss circulation material and workover fluid tackify material, cause cost burden.Absorption well, inclined shaft, the milling operation of horizontal well cover need workover fluid to add a large amount of leak stopping, tackify material, need long-time circulation after milling, and to realize at utmost returning out of chip, effect is undesirable, and the accident of damage sleeve pipe, bit freezing easily occurs.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of multi-functional local reverse-circulation seating nipple, it realizes the safe and efficient cover milling operation to absorption well, high-angle wells and horizontal wells, improve the cleaning effect of chip and small falling object, avoid lock of tool drilling, and can realize the anti-safe milling of windowing and repair casing operation, integrate that cover milling, chip are fished for, small falling object is salvaged and stop collar milling etc. multi-functional.
In order to solve the problems of the technologies described above, the utility model comprises the top connection being threaded successively, urceolus and central tube joint, described outer tube inner wall is connected with an internal lining pipe, described internal lining pipe upper end is sealedly connected with silk gambling, lower ending opening, and this internal lining pipe both sides cutting tip wall thickness forms the liquid stream commutation passage communicating with internal lining pipe top, the upper and lower two ends of described urceolus are also formed with respectively the anti-circulation change of many groups direct circulation outlet and the direct circulation of many groups becomes anti-loop exit, the direct circulation of described many groups becomes anti-loop exit and is communicated with liquid stream commutation passage and oil jacket annular space, described many groups anti-circulation change direct circulation outlet are communicated with internal lining pipe inside and oil jacket annular space, described central tube joint inside is connected with a central tube base removably, this central tube base is provided with a central tube that extends up to internal lining pipe inside, the upper end shutoff of described central tube, lower ending opening, and this central tube top side perforate, described internal lining pipe inside is also provided with one and becomes the sand filter between direct circulation outlet and central tube in anti-circulation, space between described sand filter and central tube has formed the memory space for depositing chip.
Described in every group, direct circulation becomes anti-loop exit and is tilted to from inside to outside lower setting, and described in every group, direct circulation becomes anti-loop exit and the urceolus angle between axially and is less than 20 °.
Described in every group, anti-circulation becomes direct circulation outlet and is tilted to from inside to outside setting, and described in every group, anti-circulation becomes the angle of direct circulation outlet between axial with urceolus and is less than 40 °.
Described sand filter adopts three-dimensional filter sand net group.
The beneficial effects of the utility model are: the milling operation of workover fluid local reverse-circulation cover, operation simultaneously implementation tool is fished for the collection of chip, overcome the impact on construction of leakage and hole deviation factor, improve the cleaning efficiency that the small falling object such as chip and cable skin is salvaged, stop lock of tool drilling, coordinate with milling pipe can larger performance instrument practicality, to improving timeliness and cost-savingly thering is significant effect.The local reverse-circulation of workover fluid has overcome leakage, the impact of hole deviation on cover milling construction, the chip that milling produces can enter seating nipple completely, complete after cover milling drilling depth, do not need to circulate again and can pull out of hole, realize fast, high-quality, safety work, tool body has centralizing function simultaneously, and milling tool, under anti-circulating fluid effect, can effectively avoid damaging sleeve pipe.Coordinate the practicality that can improve instrument with milling pipe.In addition, outside instrument decannulation of the present utility model flexural deformation cannot be lowered to, be applicable to any hole condition, and replaceable attachment base element, realize the stop collar milling of electric pump pipe string top of fish, fish for cable onal.
Brief description of the drawings
Fig. 1 is the structural representation of the multi-functional local reverse-circulation seating nipple of the utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Referring to Fig. 1, multi-functional local reverse-circulation seating nipple of the present utility model comprises the top connection 1, urceolus 3 and the central tube joint 5 that are threaded successively.
Described urceolus 3 inwalls are connected with an internal lining pipe 2, and described internal lining pipe 2 upper ends are sealedly connected with silk gambling, lower ending opening, and these internal lining pipe 2 both sides cutting tip wall thickness form the liquid stream commutation passage communicating with internal lining pipe 2 tops.
Described urceolus is also formed with respectively that the anti-circulation of many groups becomes direct circulation outlet 6 and the direct circulation of many groups becomes anti-loop exit 4 in two ends Shang Xia 3, the direct circulation of described many groups becomes anti-loop exit 4 and is communicated with liquid stream commutation passage and oil jacket annular space, and the anti-circulation of described many groups becomes direct circulation outlet 6 and is communicated with the inner and oil jacket annular spaces of internal lining pipes 2.
Described central tube joint 5 two ends are bipolar button screw thread, and top connects urceolus 3, bottom adapter sleeve milling tool (also can connect and extend milling pipe pipe nipple).Described central tube joint 5 inside are connected with a central tube base 10 removably, this central tube base 10 is provided with a central tube 8 that extends up to internal lining pipe 2 inside, described central tube 8 upper end shutoff, lower ending opening, and these central tube 8 top side perforates, flow to the passage into seating nipple for carrying chip liquid, tentatively realize Separation of Solid and Liquid.Described central tube base 10 can be dismantled the loose-leaf that changes the outfit together with central tube 8, realizes fishing for of cable skin, small falling object, the multifunction of implementation tool.
Described internal lining pipe 2 inside are also provided with one and become the sand filter 7 between direct circulation outlet 6 and central tube 8 in anti-circulation, and the space between described sand filter 7 and central tube has formed the memory space 9 for depositing chip.Wherein, described sand filter 7 adopts three-dimensional filter sand net group.Described sand filter 7, for liquid stream chip is filtered, makes detrital deposit at memory space 9.
Preferably, described direct circulation becomes anti-loop exit 4 into four, and four direct circulations become anti-loop exit 4 and are tilted to from inside to outside lower setting, and described in every group, direct circulation becomes the angle of anti-loop exit 4 and urceolus 3 between axially and is less than 20 °.
Preferably, described anti-circulation becomes direct circulation outlet 6 and is four, and four anti-circulations become direct circulations outlet 6 and are tilted to from inside to outside setting, and described in every group, anti-circulation becomes the angle of direct circulation outlet 6 between axial with urceolus 3 and is less than 40 °.
The utility model has changed conventional stuff realizes the technique of local reverse-circulation, tool processes is simple, practical, chip and the impurity that cover milling milling can be produced effectively be collected in a large number and fish for, and stop bit freezing risk, coordinate the practicality of the performance instrument that lengthening seating nipple can be larger with milling pipe.
Operating principle of the present utility model:
Engage sleeves, the instruments such as milling, instrument of the present utility model is down to precalculated position, well head connection side drilling rod, the good direct circulation flow process in ground starts cycle operation, liquid stream is through internal lining pipe 2 flow direction changes, become direct circulation into anti-circulation, become anti-loop exit 4 from direct circulation and enter oil jacket annular space flushing job position, carry chip simultaneously and enter central tube 8, because side perforate is shut at central tube 8 tops, chip is deposited into memory space 9 downwards, on liquid flows to, realize solid-liquid initial gross separation, after sand filter 7 solid-liquids thoroughly separate, the reflexive circulation change of liquid direct circulation outlet 6 enters oil jacket annular space and returns out ground.Realize the closed cycle of overall direct circulation local reverse-circulation.
By coordinating with milling tools, it is local reverse-circulation that seating nipple self structure corrects circulating fluid, down-hole is overlapped to the chip impurity of milling generation and is efficiently cleared up, collects; Solve the difficult problem that small falling object fishing tool cannot thoroughly be salvaged and carry; Can be for the stop collar milling operation of electric pump pipe string top of fish.Overcome the impact that pit shaft leakage and hole deviation factor cause construction, not only increased substantially operating efficiency and success rate, also can save the fringe cost producing in operation process.
In sum, content of the present utility model is not limited in the above-described embodiment, and those skilled in the art can propose other embodiment within technological guidance's thought of the present utility model, but within these embodiment are included in scope of the present utility model.
Claims (4)
1. a multi-functional local reverse-circulation seating nipple, it is characterized in that: comprise the top connection (1) being threaded successively, urceolus (3) and central tube joint (5), described urceolus (3) inwall is connected with an internal lining pipe (2), described internal lining pipe (2) upper end is sealedly connected with silk gambling, lower ending opening, and this internal lining pipe (2) both sides cutting tip wall thickness forms the liquid stream commutation passage communicating with internal lining pipe (2) top, the upper and lower two ends of described urceolus (3) are also formed with respectively the anti-circulation of many groups and become direct circulation outlet (6) and organize direct circulation more and become anti-loop exit (4), the direct circulation of described many groups becomes anti-loop exit (4) and is communicated with liquid stream commutation passage and oil jacket annular space, described many groups anti-circulation change direct circulation outlet (6) are communicated with internal lining pipe (2) inside and oil jacket annular space, described central tube joint (5) inside is connected with a central tube base (10) removably, this central tube base (10) is provided with one and extends up to the inner central tube (8) of internal lining pipe (2), described central tube (8) upper end shutoff, lower ending opening, and this central tube (8) top side perforate, described internal lining pipe (2) inside is also provided with a sand filter (7) being positioned between anti-circulation change direct circulation outlet (6) and central tube (8), space between described sand filter (7) and central tube has formed the memory space (9) for depositing chip.
2. according to multi-functional local reverse-circulation seating nipple claimed in claim 1, it is characterized in that: described in every group, direct circulation becomes anti-loop exit (4) and is tilted to from inside to outside lower setting, and described in every group, direct circulation becomes anti-loop exit (4) and urceolus (3) angle between axially and is less than 20 °.
3. according to multi-functional local reverse-circulation seating nipple claimed in claim 1, it is characterized in that: described in every group, anti-circulation becomes direct circulation outlet (6) and is tilted to from inside to outside setting, and described in every group, anti-circulation becomes the angle of direct circulation outlet (6) between axial with urceolus (3) and is less than 40 °.
4. according to the multi-functional local reverse-circulation seating nipple described in any one in claim 1-3, it is characterized in that: described sand filter (7) adopts three-dimensional filter sand net group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456117.6U CN203978355U (en) | 2014-08-13 | 2014-08-13 | Multi-functional local reverse-circulation seating nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456117.6U CN203978355U (en) | 2014-08-13 | 2014-08-13 | Multi-functional local reverse-circulation seating nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203978355U true CN203978355U (en) | 2014-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420456117.6U Expired - Fee Related CN203978355U (en) | 2014-08-13 | 2014-08-13 | Multi-functional local reverse-circulation seating nipple |
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| CN (1) | CN203978355U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
| CN112502656A (en) * | 2020-10-09 | 2021-03-16 | 中国石油集团渤海钻探工程有限公司 | Screw type local reverse circulation milling fishing tool |
| CN115749658A (en) * | 2022-01-21 | 2023-03-07 | 中国石油天然气集团有限公司 | Reverse circulation hydraulic catching and salvaging barrel and salvaging method |
-
2014
- 2014-08-13 CN CN201420456117.6U patent/CN203978355U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112469882A (en) * | 2018-07-25 | 2021-03-09 | 沙特阿拉伯石油公司 | Milling underground pipe fitting |
| CN112502656A (en) * | 2020-10-09 | 2021-03-16 | 中国石油集团渤海钻探工程有限公司 | Screw type local reverse circulation milling fishing tool |
| CN115749658A (en) * | 2022-01-21 | 2023-03-07 | 中国石油天然气集团有限公司 | Reverse circulation hydraulic catching and salvaging barrel and salvaging 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: 20210108 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Bohai Drilling Engineering Co.,Ltd. Address before: 300457 Tianjin Binhai New Area Development Zone Huanghai Road 106 Bohai Drilling Engineering Co., Ltd. science and Technology Development Office Patentee before: CNPC Bohai Drilling Engineering Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 Termination date: 20210813 |
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| CF01 | Termination of patent right due to non-payment of annual fee |