CN2228973Y - Wellhead sealed inside pipe cementing tool - Google Patents
Wellhead sealed inside pipe cementing tool Download PDFInfo
- Publication number
- CN2228973Y CN2228973Y CN 95213958 CN95213958U CN2228973Y CN 2228973 Y CN2228973 Y CN 2228973Y CN 95213958 CN95213958 CN 95213958 CN 95213958 U CN95213958 U CN 95213958U CN 2228973 Y CN2228973 Y CN 2228973Y
- Authority
- CN
- China
- Prior art keywords
- cementing
- utility
- drill rod
- joint
- inside pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a wellhead sealed inside pipe cementing tool used for well cementing with major diameter jacket tubes, which has the advantages of safety and convenience. The utility model comprises a body, a small platform, a sealing joint, a press cap and a grouting joint. The small platform is sheathed on the body and the sealing joint is connected with grouting joint. The cement mortar is connected with a grouting pipeline, a casing tube and a drill rod to achieve annulus hollow through the grouting pipeline, the wellhead sealed inside pipe cementing tool and the drill rod. The utility model overcomes the defects in the prior art tools that rising the drill is inconvenient, a force supporting device on the balanced drill rod is complicated and unsafe, and the square drill rod for cementing well is necessary.
Description
The utility model relates to the sealed inner-string cementing instrument of major diameter casing cementing instrument, particularly well head in a kind of drillng operation, is applicable to the diameter (casing cementing of 244.5mm～508mm).
The sealed inner-string cementing technology in shaft bottom commonly used can solve the problem that exists in the conventional cementing technology in the major diameter casing cementing at present, for example: excessive, the mixed slurry of cement paste consumption seriously causes shortcomings such as cementing quality is poor, notes replace that the slurry time is grown, but because the instrument that this technology adopted sealing position is in the shaft bottom, the thorn leakage occurring is difficult to find and remedy, the socket of tipping in casing string breaks easily, the need brill removes and need connect kelly bar well cementation etc., brings many inconvenience to construction.At present the sealed inner-string cementing instrument of well head that uses is because the operating surface that makes a trip exceeds turntable surface 0.5-1 rice, and do not have abutment to put the platform that elevator uses, and makes the inconvenience that makes a trip; The top power apparatus adopts flange join type on the balance drilling rod, needs to connect with bolt, makes this device complicated and dangerous; In addition,, also need connect shortcomings such as kelly bar well cementation, can not satisfy the requirement of safety, convenient well cementation fully because of no cementing joint.
Task of the present utility model provides the sealed inner-string cementing instrument of a kind of improved well head, and it can provide an elevator seat to set level platform for making a trip; Adopt a pressure cap that is connected with body, top power on the active balance drilling rod; And a cementing joint is arranged, do not need to connect the kelly bar well cementation.
Task of the present utility model is finished as follows: the casing string bottom connects guide shoe, float collar, after casing string puts in place, connects the body and the chain-wales of the sealed interior pipe notes instrument of well head.Under be drilled into desired depth after, seal nipple, the cementing joint of pipe notes instrument in the tipping well head is sealed, tipping cementing pipeline is annotated for cement paste and is constructed by cementing pipeline, the sealed inner-string cementing instrument of well head, drilling rod.Construction trips out whole drilling rods after finishing, and lays down the sealed inner-string cementing instrument of well head, and well cementation finishes.
Below with reference to accompanying drawing utility model is described in further detail.
Figure l is that concrete structure of the present utility model vertically partly cuts open figure.
Fig. 2 is a well cementation pipe string schematic diagram of the present utility model.
With reference to figure l, bottom is that the body (1) of API cover pipe thread is connected on the well head casing coupling, and chain-wales (2) is enclosed within on the body (1), the long 1100mm of chain-wales (2), and wide 600mm, weight 35Kg, its role is to provides the elevator seat to set level platform for making a trip.Drilling rod is down to more than the float collar 5～10 meters, and the seal nipple (3) that will have sealing ring (4) is connected on the drilling rod, and seat hangs on the body (1).Pressure cap (5) is placed in seal nipple (3) is attempted by on the body (1), the effect of pressure cap (5) is top power on the balance drilling rod.Go up the cementing joint (6) that tape splicing has two union pipe nipples (7) at seal nipple (3), on union pipe nipple (7), connect the cementing pipeline.Assembling finishes, and begins to annotate for the cement paste operation.Annotate for after the cement paste end, lay down cementing pipeline, cementing joint (6), pressure cap (5), seal nipple (3) successively, trip out whole drilling rods, lay down chain-wales (2) and body (1), well cementation finishes.
With reference to Fig. 2, each parts is respectively: guide shoe (8), float collar (9), sleeve pipe (10), drilling rod (11), the sealed inner-string cementing instrument of well head (12), cementing pipeline (13).
The utility model has solved the inconvenience that makes a trip that exists in the existing instrument, and the top power apparatus is complicated and dangerous on the balance drilling rod, need connect the shortcoming of kelly bar well cementation.
Claims (2)
1, the sealed inner-string cementing instrument of a kind of well head, form by body (1), chain-wales (2), seal nipple (3), sealing ring (4), pressure cap (5), cementing joint (6), union pipe nipple (7) etc., it is characterized in that chain-wales (2) is enclosed within on the body (1), the seal nipple (3) that has sealing ring (4) is connected on the drilling rod, and seat hangs on the body (1), pressure cap (5) is placed in seal nipple (3) and is attempted by on the body (1), goes up the cementing joint (6) of tape splicing by two union pipe nipples (7) at seal nipple (3).
2, instrument according to claim 1 is characterized in that the long 1100mm of chain-wales (2), wide 600mm, weight 35Kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213958 CN2228973Y (en) | 1995-05-27 | 1995-05-27 | Wellhead sealed inside pipe cementing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95213958 CN2228973Y (en) | 1995-05-27 | 1995-05-27 | Wellhead sealed inside pipe cementing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2228973Y true CN2228973Y (en) | 1996-06-12 |
Family
ID=33863707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95213958 Expired - Fee Related CN2228973Y (en) | 1995-05-27 | 1995-05-27 | Wellhead sealed inside pipe cementing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2228973Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532375B (en) * | 2009-04-13 | 2012-07-11 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Method for recycling for failure of stage cementing unit and sealed circulation device |
| CN101646838B (en) * | 2006-12-05 | 2014-08-27 | 沙特***石油公司 | Oil well stage-cementing metal plate |
| CN112955626A (en) * | 2018-08-15 | 2021-06-11 | 月光方案公司 | Method and apparatus for supplying liquid to a liner |
-
1995
- 1995-05-27 CN CN 95213958 patent/CN2228973Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101646838B (en) * | 2006-12-05 | 2014-08-27 | 沙特***石油公司 | Oil well stage-cementing metal plate |
| CN101532375B (en) * | 2009-04-13 | 2012-07-11 | 中国石油化工股份有限公司胜利油田分公司采油工艺研究院 | Method for recycling for failure of stage cementing unit and sealed circulation device |
| CN112955626A (en) * | 2018-08-15 | 2021-06-11 | 月光方案公司 | Method and apparatus for supplying liquid to a liner |
| CN112955626B (en) * | 2018-08-15 | 2023-08-18 | 月光方案公司 | Method and apparatus for supplying liquid to a liner |
| US11879309B2 (en) | 2018-08-15 | 2024-01-23 | Smarthose As | Method and device for supplying liquid to a liner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |