CN201074488Y - Device for preventing buphthalmos of downhole operation tool from blocking - Google Patents
Device for preventing buphthalmos of downhole operation tool from blocking Download PDFInfo
- Publication number
- CN201074488Y CN201074488Y CNU2007200112854U CN200720011285U CN201074488Y CN 201074488 Y CN201074488 Y CN 201074488Y CN U2007200112854 U CNU2007200112854 U CN U2007200112854U CN 200720011285 U CN200720011285 U CN 200720011285U CN 201074488 Y CN201074488 Y CN 201074488Y
- Authority
- CN
- China
- Prior art keywords
- hydrophthalmos
- blocking device
- underground
- preventing clogging
- tubing string
- 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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- Earth Drilling (AREA)
Abstract
The utility model relates to an anti-blocking device for underground tools of an oil well, in particular to an underground operation tool, namely a hydrophthalmos anti-blocking device, which comprises lead stamps which are connected with the lower end of an oil pipe column in a casing pipe, an anti-blocking device is connected between the oil pipe column and the lead stamp through a thread. The anti-blocking device is a metal short segment whose one end is a conical female cap thread and the other end is a conical male cap thread, the short segment is provided with a ball seat, a ball body, a spring and a spring seat, a water channel is arranged on the lower portion of the metal short segment, and a water inlet hole is drilled on the upper portion. The blockage of hydrophthalmos of a drill bit or lead stamp can be avoided in the process of a underground operation or a well drilling by using the utility model, the blockage of hydrophthalmos of underground tools such as a washing cone, a milling shoe and the like can be avoided in workover of an oil well, and the shortcoming that a traditional underground operation can not be continued to operate after tripping the pipe column when a hydrophthalmos is blocked can be completely avoided.
Description
Technical field:
The utility model relates to a kind of oil well downhole tool preventing clogging up device, especially underground work instrument hydrophthalmia preventing clogging up device.
Background technology:
In underground work such as drilling well, well workover constructions, often to use some as drill bit, wash instrument fractured rock and repairing casings such as awl, lead stamp.In order to bring into play the jetting effect of instrument better, instrument hydrophthalmia diameter is generally all smaller, be generally 9-13mm, therefore the mud that occurs easily in the oil well pump in playing the lower tubular column process enters tubing string calker hydrophthalmia phenomenon, cause the underground work construction normally to carry out, because hydrophthalmia stops up, can't circulate in addition carrying out turn on pump in the oil well, and have to trip out tubing string in whole wells, can have a strong impact on oil well production efficient like this and increase working strength of workers.
In order to prevent that hydrophthalmia from stopping up, usually in well head drilling rod or oil pipe, strainer is installed in the existing technology, but this method can only prevent the impurity particle in the mud and stop up, can't overcome interior viscous crude of pit shaft and silt particle because of pouring in down a chimney the water blockoff phenomenon of formation, existing strainer anti-blocking device can not satisfy the site operation needs, and the underground work instrument hydrophthalmia preventing clogging up device that the utility model provides, can be in lower tubular column construction way at any time turn on pump carry out circulation well cleanup and thoroughly solved because of the down-hole string hydrophthalmia stops up and cause circuitous resistance to influence construction difficult problem.
The utility model content:
The utility model purpose is to overcome above-mentioned shortcoming, and the underground work instrument hydrophthalmia preventing clogging up device that provides, this device is connected and can prevents between tubing string and the following well tool that the instrument hydrophthalmia stops up in the well, can be in underground work lower tubular column construction way normal turn on pump circulation well cleanup, solved the circuitous topic of thwarting of drilling tool midway.
Technical scheme:
For achieving the above object, the utility model is made up of the lead stamp that the tubing string lower end in the sleeve pipe connects, and a preventing clogging up device by screwed connection between described tubing string and the lead stamp.
Described preventing clogging up device is that one one end has the taper box, the other end is the metal pipe nipple of taper pin thread, ball seat, spheroid, spring, spring base are housed in pipe nipple, have water stream channel at metal pipe nipple lower position, be drilled with the inlet opening at metal pipe nipple upper position, spring base and bottom position all are drilled with weep hole, and weep hole is connected with water stream channel.
The utility model working method:
At first this instrument is connected between tubing string and lead stamp or other instrument; G.I.H then; in being lowered to the tubing string process because spring and head of liquid effect spheroid make into the water duct close voluntarily; intact when carrying out the turn on pump circulation time under tubing string; because pump function falls spheroid and is located in above the spring; at this moment, the inlet opening is opened and carries out liquid circulation and underground work construction.In addition, liquid level head of liquid in the lower tubular column process in the pit shaft can play the auxiliary seal effect again, when tubing string arrives the oil well precalculated position at turn on pump down, because pump function moves down spheroid, this moment, circulation canal was opened, and can carry out normal circulation well cleanup and underground work construction.
The utility model has overcome in the underground work process because of after at the bottom of the tubing string lower going-into-well, hydrophthalmia is blocked can't to circulate by turn on pump, force and trip out whole downhole oil tubing strings and have a strong impact on the oil well production drawback, also can prevent downhole tool such as die nipples such as drill bit, wash that awl, junk mill, little hydrophthalmia instrument are circuitous in the lower tubular column process an oil well dead oil, foreign matters such as silt particle enter the generation that oil pipe stops up the hydrophthalmia phenomenon, and can disposable all tubing strings are lowered to thoroughly to have changed in the oil well in traditional lower tubular column way after this device uses needs frequent turn on pump to circulate, check the shortcoming whether hydrophthalmia stops up.
Description of drawings:
Fig. 1 is the utility model annexation schematic diagram.
Fig. 2 is the preventing clogging up device schematic diagram in the utility model.
Among the figure, 1, sleeve pipe, 2, tubing string, 3, preventing clogging up device, 4, oil reservoir, 5, lead stamp, 6, the down-hole foreign matter, 7, ball seat, 8, spheroid, 9, spring, 10, spring base, 11, water stream channel, 12, the inlet opening forms.
The specific embodiment:
As shown in the figure, tubing string 2 lower ends in the sleeve pipe 1 by the lead stamp 5 of screwed connection also can be drill bit, junk mill, wash awl, the die nipple workover tool, tubing string 2 is made for plain tubing, preventing clogging up device 3 between tubing string 2 and lead stamp 5, its upper end have the pin thread of taper box and tubing string 2 to join, the preventing clogging up device lower end is that die nipple button and lead stamp 5 link together, this preventing clogging up device can be processed on drill bit or other underground work tool body when making, also can independent installation and processing on the downhole tool of tubing string or drilling rod lower end.
Ball seat 7 tapered bodies in preventing clogging up device 3 pipe nipples, be positioned at upper position, the spring base 10 of ball seat bottom closely contacts with ball seat 7 for the flat round box that has the edge, seat wall and be drilled with weep hole above the bottom at spring base 10, be located in spring 9 in the spring base bottom surface, a spheroid 8 arranged, working to be sealed into water hole 12 in the spring upper end, metal pipe nipple bottom face at preventing clogging up device 3 is drilled with water stream channel 11, and top is drilled with inlet opening 12.The closed system of forming by above-mentioned parts, the pressure that can produce by spring and fluid column in being lowered to the tubing string process promotes spheroid 8 inlet opening 12 passages is closed voluntarily, when finishing the oil pipe turn on pump down, spheroid is opened the inlet opening, can under the liquid circulation, carry out the normal operation construction, thereby prevent to wash awl from instrument, junk mill, enter the oil well dead oil in the instrument hydrophthalmias such as lead stamp, foreign matters such as silt particle, cause and stop up the hydrophthalmia phenomenon in the pipe, use this device disposable oil pipe or drill string to have been descended in the construction, thoroughly avoided wanting frequent turn on pump circulation in traditional lower tubular column way, checked the drawback whether hydrophthalmia stops up.
Described preventing clogging up device also can adopt plane and conical surface seal except that adopting spheroid 8 ball face sealings.
Claims (1)
1. underground work instrument hydrophthalmia preventing clogging up device is formed by the preventing clogging up device (3) of screwed connection between the lead stamp (5) that is connected by tubing string (2) lower end in the sleeve pipe (1) and tubing string (2) and the lead stamp (5); It is characterized in that: described preventing clogging up device (3) is that one one end has the taper box, the other end is the metal pipe nipple of taper pin thread, ball seat (7), spheroid (8), spring (9), spring base (10) are housed in pipe nipple, have water stream channel (11) at metal pipe nipple lower position, upper position is drilled with inlet opening (12); Spring base and bottom position all are drilled with weep hole, and weep hole is connected with water stream channel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200112854U CN201074488Y (en) | 2007-03-20 | 2007-03-20 | Device for preventing buphthalmos of downhole operation tool from blocking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200112854U CN201074488Y (en) | 2007-03-20 | 2007-03-20 | Device for preventing buphthalmos of downhole operation tool from blocking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201074488Y true CN201074488Y (en) | 2008-06-18 |
Family
ID=39519751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200112854U Expired - Fee Related CN201074488Y (en) | 2007-03-20 | 2007-03-20 | Device for preventing buphthalmos of downhole operation tool from blocking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201074488Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991656A (en) * | 2022-05-26 | 2022-09-02 | 潍坊盛德石油机械制造有限公司 | Screw drill capable of preventing drill water hole from being blocked |
-
2007
- 2007-03-20 CN CNU2007200112854U patent/CN201074488Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991656A (en) * | 2022-05-26 | 2022-09-02 | 潍坊盛德石油机械制造有限公司 | Screw drill capable of preventing drill water hole from being blocked |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080618 |