CN101294487B - Renewedly entrance guiding device for injection string - Google Patents
Renewedly entrance guiding device for injection string Download PDFInfo
- Publication number
- CN101294487B CN101294487B CN2008101145252A CN200810114525A CN101294487B CN 101294487 B CN101294487 B CN 101294487B CN 2008101145252 A CN2008101145252 A CN 2008101145252A CN 200810114525 A CN200810114525 A CN 200810114525A CN 101294487 B CN101294487 B CN 101294487B
- Authority
- CN
- China
- Prior art keywords
- hole
- guiding device
- base
- injection string
- sand control
- 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.)
- Active
Links
Images
Abstract
The invention relates to a guiding device for injection pipe column re-entering, which is characterized in that the device comprises a cylindrical base and a cylindrical pin. A through hole is vertically formed in the centre of the base and a tapered guiding mouth is formed above the through hole. A pair of thread holes penetrating the through hole is symmetrically formed in the middle of base and a circle of ring groove is formed on the inner wall of the through hole on the lower part of the base. External threads which are screwed in two screw holes on the base are formed at one end of the cylindrical pin, and the other end of which is a polished rod with a smaller diameter than the thread section, and a screw driver inserting mouth is formed at the outer end of the threads of the two pins. The invention enables the injection pipe column to be easily inserted into the through hole of the guiding device and smoothly enter a sand control packer and a large part of a sand control pillar, thereby solving the problem that the injection pipe column is difficult to be inserted into the top part of the sand control packer.
Description
Technical field
The present invention relates to a kind of guiding device, particularly reenter guiding device about a kind of offshore oilfield injection string.
Background technology
Offshore oilfield adopts the method for the injection of polymer displacement of reservoir oil to solve for improving the extraction efficient in existing oil field usually, thereby reaches the purpose of final raising recovery ratio and raising field output.Offshore oilfield is in the work of implementing polymer displacement of reservoir oil raising recovery ratio, usually the problem that runs into is: injection well (as shown in Figure 1) originally is owing to have sand control packer 20 and big section sand control pipe 30 in the pit shaft 10, when injection of polymer, can not pull out the position of these sand control pipes 30 and change packer 20, therefore, if insert the injection string 40 of multi-zone flow regulating once more, particularly in inclined shaft, tubing string is difficult to centering, and it is very big to insert difficulty smoothly.
Summary of the invention
At the problems referred to above, the purpose of this invention is to provide a kind of injection string of injection string top sand control packer in reentering the offshore oilfield pit shaft that can make and reenter guiding device.
For achieving the above object, the present invention takes following technical scheme: a kind of injection string reenters guiding device, it is characterized in that: it comprises a cylindric base and a cylindrical peg, described base central longitudinal is to a through hole is set, described through hole top is the targeting port of a band tapering, described base middle part radial symmetric is provided with the screwed hole of the described through hole of a pair of perforation, and the through-hole wall of described base bottom is provided with a ring annular groove; One end of described cylindrical peg is the external screw thread that is screwed into two screws on the described base, and other end diameter is less than the polished rod of thread segment, and the outer end of the thread segment of described two pins is provided with a screwdriver socket.
It is cross or yi word pattern that described screwdriver inserts mouth.
The present invention is owing to take above technical scheme, it has the following advantages: 1, the present invention is owing to adopted a base that has targeting port, and through hole is set at the center of base, therefore when injection string reenters the top sand control packer, the targeting port on base top can make injection string insert easily in the through hole of guiding device, and enter sand control packer and big section sand control pipe smoothly, solved a difficult problem of in the sand control packer of top, inserting the injection string operational difficulty again.2, the present invention both can be fixedlyed connected with running tool by pin owing in the both sides, middle part of base radial symmetric a pair of screwed hole is set, and both this guiding device can be sent to sand control pipe top, down-hole.3, the present invention blocks annular groove by the taking-up instrument and both this guiding device can be taken out from the down-hole owing in the bottom of base one ring annular groove is set.
Description of drawings
Fig. 1 is installation site, a guiding device of the present invention down-hole schematic diagram
Fig. 2 is a guiding device partial schematic sectional view of the present invention
Fig. 3 is a pin configuration schematic diagram in the guiding device of the present invention
Fig. 4 is that the present invention is sent into schematic diagram by instrument
Fig. 5 is that the present invention is taken out schematic diagram by instrument
The specific embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 2, guiding device of the present invention comprises: a cylindric base 1, to a through hole 11 is set, the top of through hole 11 is provided with the targeting port 12 of a band tapering in the central longitudinal of base 1.Radial symmetric is provided with a pair of screwed hole 13 in the both sides, middle part of base 1, and a ring annular groove 14 is set in the bottom of base 1.
As shown in Figure 3, one has externally threaded pin 2, is installed in accordingly on two screwed holes 13 of base 1 radial symmetric setting, the other end of two pins 2 is thinner feed rod 21, the end of thread segment is provided with screwdriver and inserts mouth 22, and inserting mouth 22 can be cross, also can be yi word pattern.
The outside dimension of base 1 of the present invention pit shaft 10 internal diameter sizes poly-with implementing notes are slidingly matched, and through hole 11 diameters of base 1 are corresponding with the internal diameter size of top sand control packer 20.Guiding device of the present invention can adopt the high strength alloy steel material.
As shown in Figure 4, when guiding device of the present invention is sent into, can enter sand control packer 20 tops of pit shaft by an instrument 50, it may further comprise the steps:
1, at first the lower shaft 51 of instrument lower end is inserted in the through hole 11 of guiding device bases 1 screwed hole 13 that the radial direction through hole 52 on the lower shaft 51 is aimed on the bases 1;
2, two pins 2 with guiding device are screwed into from two outsides of screwed hole 13 respectively, make two polished rods 21 of two pins 2 lean out screwed hole 13 the inners, are positioned at the radial direction through hole 52 of lower shaft 51;
3, the apical axis 53 with instrument is connected on the drilling rod, by drilling rod instrument and whole guiding device is sent into the pit shaft 30 interior (as shown in Figure 1) of preparing to implement polymer displacement of reservoir oil together;
4, apply downward pressure at well head by drilling rod, when the pressure of lower shaft 51 reached the pressure that pin 2 cut off, polished rod 21 places of pin 2 between screwed hole 13 and radial direction through hole 52 were cut off;
5, the well head place can stop to exert pressure according to the instantaneous variation (during cut-out, resistance reduces, and rises) of pressure quickly;
6, the injection string 40 of multi-zone flow regulating is inserted in the guide effect of the targeting port 12 on the top that this moment can be by guiding device once more, finishes the object of the invention.
As shown in Figure 5, when guiding device of the present invention takes out, can be by instrument 50 with its taking-up, it may further comprise the steps:
1. in two blind holes 55 of lower shaft 51 bottoms of instrument, put into the latchings 57 of little spring 56 and two band cup heads respectively, and fixedly two end cap 58 (such as by being threaded, but be not limited thereto) in the end of two blind holes 55, prevent that latching 57 from being ejected by little spring 56;
2. the apical axis 53 with instrument is connected on the drilling rod, instrument is inserted in the through hole 11 of guiding device base 1 by drilling rod, and in this process, two latchings 57 are compressed in two blind holes 55 that enter lower shaft 51 under targeting port 12 conical surface effects of guiding device;
3. when latching 57 arrived annular grooves 14, under the elastic force effect of little spring 56, the latching 57 of two band cup heads just can spring in the annular groove 14 of guiding device, and the base 1 of guiding device is blocked;
4. upwards mention drilling rod, just guiding device can be extracted.
For the present invention can be reused, need two radial holes 15 be set in annular groove 14 positions of relative guiding device of the present invention, to withstand two latchings 57 by instruments such as screwdrivers, instrument 50 is taken out from guiding device, and take out with will the break pin 2 of polished rod 21 of screwdriver, change two new pins 2, just guiding device of the present invention can be reused.
Claims (3)
1. an injection string reenters guiding device, it is characterized in that: it comprises a cylindric base and two cylindrical peg, described base central longitudinal is to a through hole is set, described through hole top is the targeting port of a band tapering, described base middle part radial symmetric is provided with the screwed hole of the described through hole of a pair of perforation, and the through-hole wall of described base bottom is provided with a ring annular groove; One end of described cylindrical peg is the external screw thread that is screwed into two screws on the described base, and other end diameter is less than the polished rod of thread segment, and the outer end of the thread segment of described two pins is provided with a screwdriver and inserts mouth.
2. a kind of injection string as claimed in claim 1 reenters guiding device, it is characterized in that: described screwdriver inserts mouth and is cross.
3. a kind of injection string as claimed in claim 1 reenters guiding device, it is characterized in that: described screwdriver inserts mouth and is in-line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101145252A CN101294487B (en) | 2008-06-06 | 2008-06-06 | Renewedly entrance guiding device for injection string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101145252A CN101294487B (en) | 2008-06-06 | 2008-06-06 | Renewedly entrance guiding device for injection string |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101294487A CN101294487A (en) | 2008-10-29 |
| CN101294487B true CN101294487B (en) | 2011-11-09 |
Family
ID=40064991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101145252A Active CN101294487B (en) | 2008-06-06 | 2008-06-06 | Renewedly entrance guiding device for injection string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101294487B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101294488B (en) * | 2008-06-06 | 2011-11-09 | 中国海洋石油总公司 | Renewedly entrance guiding device for injection string and feeding-discharging tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467783Y (en) * | 2000-12-15 | 2001-12-26 | 杨野 | Holder and coupling-disconnecting device on underground pipeline drilling machine |
| CN1443922A (en) * | 2003-04-11 | 2003-09-24 | 中国海洋石油总公司 | Downhole rod pipe fixing device |
| CN2923987Y (en) * | 2006-03-02 | 2007-07-18 | 张风仁 | Sucker rod wellhead device |
| CN101294488A (en) * | 2008-06-06 | 2008-10-29 | 中国海洋石油总公司 | Renewedly entrance guiding device for injection string and feeding-discharging tool |
| CN201215007Y (en) * | 2008-06-06 | 2009-04-01 | 中国海洋石油总公司 | Re-entering guide device for injection string |
-
2008
- 2008-06-06 CN CN2008101145252A patent/CN101294487B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2467783Y (en) * | 2000-12-15 | 2001-12-26 | 杨野 | Holder and coupling-disconnecting device on underground pipeline drilling machine |
| CN1443922A (en) * | 2003-04-11 | 2003-09-24 | 中国海洋石油总公司 | Downhole rod pipe fixing device |
| CN2923987Y (en) * | 2006-03-02 | 2007-07-18 | 张风仁 | Sucker rod wellhead device |
| CN101294488A (en) * | 2008-06-06 | 2008-10-29 | 中国海洋石油总公司 | Renewedly entrance guiding device for injection string and feeding-discharging tool |
| CN201215007Y (en) * | 2008-06-06 | 2009-04-01 | 中国海洋石油总公司 | Re-entering guide device for injection string |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101294487A (en) | 2008-10-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101709632B (en) | Rotary reducing expansion device | |
| CN110805404A (en) | Claw spring type double-tube sampling drilling tool | |
| CN102296950A (en) | Hydraulic shearing type sampling drilling tool | |
| CN206468306U (en) | Reducing coiled tubing docking facilities | |
| CN201215007Y (en) | Re-entering guide device for injection string | |
| CN101294488B (en) | Renewedly entrance guiding device for injection string and feeding-discharging tool | |
| CN101294487B (en) | Renewedly entrance guiding device for injection string | |
| CN201236652Y (en) | Feeding and extracting tool of guiding device | |
| CN101293322B (en) | Feed and extraction tool of guiding device | |
| CN2906024Y (en) | Remotely-controlled tapered stabilizer through flow channel | |
| CN217760872U (en) | Top drive drilling machine lower sleeve for grouting construction | |
| CN105840113B (en) | A kind of anti-torsion instrument of linkage type drill string | |
| CN203729929U (en) | Expansion pipe completing tool | |
| CN201236687Y (en) | Renewedly entrance guiding device for injection string and feeding-discharging tool | |
| CN200949423Y (en) | Hydraulic reduced drilling tool stabilizer | |
| CN203394494U (en) | Coiled tubing fracturing and pressure conducting reverse circulation tool | |
| CN201292785Y (en) | Center fetching inner barrel righting fittings | |
| CN106968936A (en) | A kind of ball-throwing type standing valve | |
| CN109236221B (en) | Hydraulic perforation anchoring device | |
| CN207245615U (en) | A kind of full hole condition tubing and casing boring bar tool | |
| CN208918497U (en) | A kind of double acting Full hydraulic jar knocker during drilling | |
| CN201953347U (en) | Length-telescopic compensation device of bridge plug seat seal pipe | |
| CN112127807A (en) | Spring type guide ball head for continuous pipe penetration and use method | |
| CN201241620Y (en) | Rotary type fin guide head | |
| CN100472027C (en) | Branched selective reentry method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee after: CNOOC research institute limited liability company Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Co-patentee before: CNOOC Research Institute Patentee before: China National Offshore Oil Corporation |
|
| CP01 | Change in the name or title of a patent holder |