CN2661909Y - Instant grouting and unfreezing device - Google Patents
Instant grouting and unfreezing device Download PDFInfo
- Publication number
- CN2661909Y CN2661909Y CN 03266195 CN03266195U CN2661909Y CN 2661909 Y CN2661909 Y CN 2661909Y CN 03266195 CN03266195 CN 03266195 CN 03266195 U CN03266195 U CN 03266195U CN 2661909 Y CN2661909 Y CN 2661909Y
- Authority
- CN
- China
- Prior art keywords
- casing
- slurry
- well
- circulation
- cup packer
- 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 - Lifetime
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Abstract
The utility model relates to a grouting releasing device applied in finishing stage of oil well drilling. In the prior art, when a casing is to be lain, drilling fluid is to be injected inside the casing from the well opening, which extends the time for laying a casing that causes sticking easily. When sunken sand occurs at the lower edge of the well opening, circulation is needed for laying a casing to eliminate the sunken sand. A drilling rod fastener short section, a central pipe, a cup packer assembly and a guiding head are connected together via a driving system positioned on the top of the utility model. When laying a casing, slurry goes through the top driving system and the valve in the guiding head is opened; slurry can be injected into the casing through the central pipe and the slurry outlet of the guiding head to realize casing lying while with circulation. When barriers occur, the cup packer is inserted into the casing so that circulation is formed in the casing at the bottom of the cup packer and between the casing and the well wall, which removes the slurry together with the sunken sand inside the well opening. The utility model helps to lay a casing with short working circle and enables slurry to brush the well wall, which is helpful to promote cementing wells.
Description
Technical field:
The utility model relates to the grouting release device that a kind of oil drilling completion phase uses, and is mainly used in the unfreezing of grouting at any time in straight well in the oil exploration, directional well and the extended reach well setting of casing process, belongs to the plant equipment that the oil drilling completion is used.
Background technology:
At present, after the oil drilling completion at straight well, directional well and extended reach well casing job, employing be that single current valve formula float shoe is installed in casing string bottom, when being lowered to sleeve pipe, in the ferrule sleeve more than the valve is air, influence setting of casing speed,, must in sleeve pipe, pour into drilling fluid at well head in order to continue setting of casing, a bite oil well needs segmentation repeatedly to stop, the perfusion drilling fluid has prolonged the setting of casing time, and casing string is in the shaft bottom long card accident of gluing that causes easily quiescent time.In addition, at extended reach well, directional well etc., because of the influence of hole deviation, there is sand setting on the low limit of well, and sleeve pipe can be hampered in transferring process, be lowered to sleeve pipe smoothly, by the sand setting section, just must set up circulation, removes sand setting.At present, during sand removal, adopt to stop setting of casing, well head connects kelly bar, could set up circulation, has so just influenced casing job, has prolonged the completion time.
Summary of the invention:
In order to overcome the problems referred to above in the casing job, avoid interrupting because of the perfusion drilling mud practice in the setting of casing process, or extended reach well, directional well etc., because of being hampered and the sand removal problem that the influence of hole deviation causes, the spy develops a kind of release device that is in the milk at any time, this device can be in straight well setting of casing process drilling fluid charge in sleeve pipe at any time, do not influence casing job, shorten the setting of casing time, can also be when extended reach well, directional well setting of casing run into the sand resistance, limit circulation limit sand removal guarantees being lowered to smoothly of sleeve pipe, shortens the setting of casing time.
Technical solutions of the utility model are to utilize TDS, and the drilling rod button by TDS is guided drilling rod button pipe nipple, central tube, cup packer assembly first-class linking together and constituted the release device that is in the milk at any time.
The valve that is supported by back-moving spring is installed in seeker.Cup packer is sulfided by the skeleton and the rubber cup integral body of steel, and the external diameter of rubber cup is greater than the internal diameter of sleeve pipe.
Its operating principle is, in the setting of casing process, mud passes through TDS, in the release device that is in the milk at any time, pour into mud, under the pressure of mud, the valve in the seeker is opened, and mud can be by the grout outlet of central tube and seeker, mud is poured in the sleeve pipe, realize circulation limit, limit setting of casing.When setting of casing occurring and be hampered, can directly the cup packer of the release device that is in the milk at any time can be inserted in the sleeve pipe, casing head has certain taper, when inserting cup packer, the leather cup external diameter is slightly smaller than the internal diameter of casing head, therefore can not overturn, because the plugging action of packer, make and set up circulation between the annular space of parts casing pipe and the sleeve pipe and the borehole wall under the cup packer, the sand setting in the well can be removed and carry to the mud that pours into, and realizes circulation limit, limit setting of casing.Stop the circulation after, back-moving spring pushes up back valve, shutoff central tube, prevent the mud drip.
Description of drawings:
Fig. 1 is the release device structural representation that is in the milk at any time.
Among Fig. 1, TDS drilling rod button 1, drilling rod button pipe nipple 2, central tube 3, cup packer assembly 4, back-moving spring 5, seeker 6, sleeve pipe 7, valve 10, seeker grout outlet 11.
Fig. 2 is the cup packer partial enlarged drawing
Among Fig. 2, steel skeleton 8, rubber cup 9.
The specific embodiment:
In Fig. 1, drilling rod button pipe nipple 2, central tube 3, cup packer assembly 4, target seeker 6 link together, and are connected to by drilling rod button pipe nipple 2 on the drilling rod button 1 of TDS.Back-moving spring 5 is contained in the target seeker, supports and jacking valve 10.The end of target seeker has grout outlet 11.Rubber cup 9 external diameters of cup packer 4 are greater than the internal diameter of sleeve pipe 7, and leather cup 9 and steel skeleton 8 constitute cup packer assembly 4.Steel skeleton 8 can improve the intensity of leather cup.
Utilize the utility model not only to help being lowered to smoothly of sleeve pipe, shorten cased construction period, owing to set up new circulation, mud is scrubbed the borehole wall, also helps the raising cementing quality again.
Claims (3)
1, a kind of release device that is in the milk at any time, constitute by drilling rod button pipe nipple (2), central tube (3), cup packer assembly (4) and target seeker (6), it is characterized in that from top to bottom being connected in sequence by drilling rod button pipe nipple (2), central tube (3), cup packer assembly (4) and target seeker (6), back-moving spring (5) is contained in the target seeker, support and jacking valve (10), the end of target seeker has grout outlet (11).
2, the release device that is in the milk at any time as claimed in claim 1 is characterized in that cup packer assembly (4) is to be formed by the whole sulfuration of the skeleton (8) of steel and rubber cup (9).
3, the release device that is in the milk at any time as claimed in claim 2 is characterized in that the internal diameter of the external diameter of rubber cup (9) greater than sleeve pipe (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266195 CN2661909Y (en) | 2003-06-27 | 2003-06-27 | Instant grouting and unfreezing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03266195 CN2661909Y (en) | 2003-06-27 | 2003-06-27 | Instant grouting and unfreezing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2661909Y true CN2661909Y (en) | 2004-12-08 |
Family
ID=34329806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03266195 Expired - Lifetime CN2661909Y (en) | 2003-06-27 | 2003-06-27 | Instant grouting and unfreezing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2661909Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014302A (en) * | 2016-05-30 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Operation method achieved through automatic grouting and drilling fluid circulating system |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
-
2003
- 2003-06-27 CN CN 03266195 patent/CN2661909Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014302A (en) * | 2016-05-30 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Operation method achieved through automatic grouting and drilling fluid circulating system |
| CN114837610A (en) * | 2021-02-02 | 2022-08-02 | 中国石油天然气股份有限公司 | Damaged petroleum casing pipe plugging device and method |
| CN114837610B (en) * | 2021-02-02 | 2024-03-26 | 中国石油天然气股份有限公司 | Broken petroleum casing plugging device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130627 Granted publication date: 20041208 |