CN2732989Y - Down-hole by-pass valve type lost circulation material running tool used in oil field - Google Patents
Down-hole by-pass valve type lost circulation material running tool used in oil field Download PDFInfo
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- CN2732989Y CN2732989Y CN 200420079678 CN200420079678U CN2732989Y CN 2732989 Y CN2732989 Y CN 2732989Y CN 200420079678 CN200420079678 CN 200420079678 CN 200420079678 U CN200420079678 U CN 200420079678U CN 2732989 Y CN2732989 Y CN 2732989Y
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- way joint
- slide bar
- hole
- inner chamber
- connector
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Abstract
The utility model discloses a down-hole by-pass valve type leak stoppage material conveying tool used in oil field, which belongs to the technical field of an oil drilling tool and comprises a drilling rod and a leak stoppage device which is arranged at the lower end of the drilling rod. The leak stoppage device comprises a cylindrical bidirectional connector, the upper and the lower ends of which are respectively connected with the drilling rod and a sleeve tube. A hollow central slide bar which is matched with the inner chamber of the bidirectional connector is arranged in the bidirectional connector, and a disconnecting device is arranged between the central slide bar and the bidirectional connector. An upper choke plug for sealing the inner chamber of the bidirectional connector is arranged at the lower part of the central slide bar, and the side wall of the bidirectional connector of the side surface of the central slide bar is provided with a passage which is communicated with the inner chamber of the sleeve tube. Through holes are arranged on the side wall of the bidirectional connector between the central slide bar and the upper choke plug. The lower end of the sleeve tube is connected with a cylindrical lower connector. A lower choke plug which is matched with the inner chamber of the lower connector is arranged in the lower connector, and a lower cutting pin is arranged between the lower choke plug and the lower connector. The utility model can improve the success rate of leak stoppage and working quality, and has the advantages of high efficiency, little consumption and a wide selection range of the leak stoppage material.
Description
Technical field
The utility model relates to a kind of running tool of oil well loss circulation material, belongs to the oil drilling tool technical field.
Background technology
Leakage is one of down hole problem common in the drilling process, and it not only can expend drilling time, loss mud, and might cause a series of complex situations such as bit freezing, blowout, well slough, even cause well to be scrapped, cause heavy economic losses.The harm that leakage is brought oil-gas exploration, drilling well and development operation can reduce following several respects: (1), leakage are incured loss through delay the drillng operation time, prolong drilling period; (2), leakage directly causes huge material damage; (3), the reservoir leakage can damage production capacity; (4), disturb geological logging work; (5), leakage disturbs the conventional maintenance of mud property to handle; (6), leakage can cause down hole problem.
The harm that brings just because of leakage, the leak-proof leak-stopping technology has obtained fast development, has has researched and developed many-sided leak-stopping materials such as bridge joint loss circulation material, chemical plugging agent, high dehydration sealing agent, uniaxial pressure sealer and the thick slurry of various leak stopping at present.In addition, dilatancy organic materials such as having used soybean and sea-tangle is also tested in some oil field, has obtained satisfied effect, and these materials can be selected different sizes or granularity for use according to strata condition.Loss circulation material running tool of the prior art, mainly form by drilling rod and device for plugging etc., it utilizes slush pump that loss circulation material is sent into the down-hole in the feeding process, send in the process at material, material is in non-closed state, liquid can enter in the material in the well, can make the organic loss circulation material of dilatancy premature expansion in work progress like this, so that has lost plugging effect; In addition, slush pump also is not suitable for sending into long fiber material.
The utility model content
The purpose of this utility model provides down-hole, a kind of oil field bypass valve formula loss circulation material running tool, and it is being guaranteed under the prerequisite of wellbore stability, can seal to transport the organic expander loss circulation material and carry out leak stopping.
The purpose of this utility model is achieved in that down-hole, a kind of oil field bypass valve formula loss circulation material running tool, comprise drilling rod and the device for plugging that is arranged at the drilling rod lower end, described device for plugging comprises cylindrical circular two-way joint, two-way joint is two ends difference jointed rod and sleeve pipe up and down, be provided with the center slide bar of the hollow that matches with two-way joint inner chamber in the two-way joint, be provided with shearing device between center slide bar and the two-way joint, slide bar below, center is provided with the upper plug head of the two-way joint inner chamber of sealing, the two-way joint sidewall of slide bar side, center is provided with the passage that is communicated with cannula cavity, and the sidewall of the two-way joint between center slide bar and the upper plug head is provided with through hole; The sleeve pipe lower end is connected with cylindrical circular lower contact, is provided with the lower end cap that matches with the lower contact inner chamber in the lower contact, is provided with the down cut pin between lower end cap and the lower contact.
During the utility model work, place loss circulation material in the sleeve pipe between upper plug head and lower end cap, many sleeve pipes can be set as required, connect some drilling rods according to well depth, in the process of stacks, for preventing cave-in, inject mud by slush pump, discharged by the through hole on the two-way joint through the center slide bar through drilling rod, the circulation pit shaft guarantees that the borehole wall can not cave in again.When device for plugging arrives assigned address down, through the inner steel ball that drops into of drilling rod, when steel ball and center slide bar join, the increasing mud displacement, when pressure acquires a certain degree, the shearing device action, the center slide bar glides and touches upper plug head, and the passage that mud is provided with in two-way joint flows to sleeve pipe, when the sleeve pipe internal pressure acquires a certain degree, the down cut pin is cut off, and loss circulation material is washed lower end cap under pressure open and entered leakage stratum, shutoff stratum.Because device for plugging rises and makes when sending into, loss circulation material is closed in the sleeve pipe, therefore can not be subjected to the influence of liquid in the well; Utilize the leak stoppage tool leak stopping of this down-hole, not only can improve leak stopping success rate and work quality, can also shorten the time and reduce manpower and materials consumption, especially very wide to the loss circulation material range of choice, not only can select conventional loss circulation material, and can be applied to materials such as intumescent material, long fibre and bulky grain, as materials such as soya bean, sea-tangles.
Described shearing device can comprise support ring and last shear pin, and support ring is arranged in the two-way joint inner chamber and with two-way joint and fixes, and support ring is socketed in slide bar upper end, center, is provided with shear pin between support ring and the center slide bar.This shearing device is simple in structure, and action accurately.
For making the loss circulation material in the sleeve pipe stressed even, described passage comprises three along the radially equally distributed radial passage of two-way joint, is provided with the axial passage that the upper end is connected with the radial passage in the sidewall of two-way joint, and described axial passage lower end is communicated with cannula cavity.
The borehole wall is stressed evenly to be difficult for caving in order to make, and described through hole has three, and three through holes evenly distribute in a circumferential direction.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is that the A-A of Fig. 1 is to profile;
Fig. 3 is that the B-B of Fig. 1 is to profile;
Fig. 4 is that the C-C of Fig. 1 is to profile.
Wherein, 1 two-way joint, 2 collars, 3 support rings, shear pin on 4,5 O-ring seals, 6 center slide bars, 7 plugs, 8 upper plug heads, 9 lower contacts, 10 lower end caps, 11 down cut pins, 12 sleeve pipes, 13 drilling rods, M radial passage, N axial passage, E through hole.
The specific embodiment
As figure, be down-hole, oil field bypass valve formula loss circulation material running tool, comprise drilling rod 13 and the device for plugging that is arranged at drilling rod 13 lower ends, described device for plugging comprises cylindrical circular two-way joint 1, two-way joint is two ends difference jointed rod 13 and sleeve pipe 12 about in the of 1, be provided with the center slide bar 6 of the hollow that matches with two-way joint 1 inner chamber in the two-way joint 1, be provided with shearing device between center slide bar 6 and the two-way joint 1, described shearing device comprises support ring 3 and last shear pin 4, be provided with a seat that holds support ring 3 in two-way joint 1 inner chamber, support ring 3 is arranged in the seat, support ring 3 upsides are provided with collar 2, collar 2 snaps in the groove that is provided with on two-way joint 1 internal chamber wall, thereby, make obtained between support ring 3 and the two-way joint 1 well secured; Support ring 3 is socketed in center slide bar 6 upper ends, circumferentially is evenly distributed with three between support ring 3 and the center slide bar 6 and goes up shear pin 4; Slide bar 6 belows in center are provided with the upper plug head 8 of two-way joint 1 inner chamber of sealing, two-way joint 1 sidewall of center slide bar 6 sides is provided with the passage that is communicated with cannula cavity, this passage comprises three along the radially equally distributed radial passage M of two-way joint 1, be provided with the axial passage N that the upper end is connected with radial passage M in the sidewall of two-way joint 1, described axial passage N lower end is communicated with cannula cavity, for easy to process, when processing radial passage M, can directly be drilled to through hole, again with the outer orifice part of through hole with plug 7 shutoff, be good seal, on the M of radial passage, the center slide bar of following both sides is provided with twice O-ring seals 5; Be evenly distributed with three through hole E on the sidewall of the two-way joint 1 between center slide bar 6 and the upper plug head 8 on the circumferencial direction; Sleeve pipe 12 lower ends are connected with cylindrical circular lower contact 9, are provided with the lower end cap 10 that matches with lower contact 9 inner chambers in the lower contact 9, are provided with down cut pin 11 between lower end cap 10 and the lower contact 9.
During use, earlier insert some sleeve pipes 12 according to loss circulation material quantity, manually pour into some loss circulation materials again in sleeve pipe 12, connecting two-way joint 1 again is related accessories, connects some drilling rods 13 according to well depth at last, in the process of stacks 13, for preventing cave-in, inject mud by slush pump, discharge by through hole E through center slide bar 6 again through drilling rod 13, the circulation pit shaft guarantees that the borehole wall can not cave in.When device for plugging arrives assigned address down, through the inner steel balls that drop into of drilling rod 13, when steel ball and center slide bar 6 join, the increasing mud displacement, when pressure acquires a certain degree, last shear pin 4 is cut off, and center slide bar 6 glides and touches upper plug head 8, and mud enters the inner chamber of sleeve pipe 12 through radial passage M and axial passage N, after sleeve pipe 12 internal pressures acquire a certain degree, down cut pin 11 is cut off, and leak stopping grain material is washed lower end cap 10 open and entered leakage stratum, shutoff stratum.
The utility model is not limited to the foregoing description, and described radial passage, axial passage, through hole can be a plurality of arbitrarily.
Claims (4)
1, down-hole, a kind of oil field bypass valve formula loss circulation material running tool, comprise drilling rod and the device for plugging that is arranged at the drilling rod lower end, it is characterized in that: described device for plugging comprises cylindrical circular two-way joint, two-way joint is two ends difference jointed rod and sleeve pipe up and down, be provided with the center slide bar of the hollow that matches with two-way joint inner chamber in the two-way joint, be provided with shearing device between center slide bar and the two-way joint, slide bar below, center is provided with the upper plug head of the two-way joint inner chamber of sealing, the two-way joint sidewall of slide bar side, center is provided with the passage that is communicated with cannula cavity, and the sidewall of the two-way joint between center slide bar and the upper plug head is provided with through hole; The sleeve pipe lower end is connected with cylindrical circular lower contact, is provided with the lower end cap that matches with the lower contact inner chamber in the lower contact, is provided with the down cut pin between lower end cap and the lower contact.
2, down-hole, a kind of oil field according to claim 1 bypass valve formula loss circulation material running tool, it is characterized in that: described shearing device comprises support ring and last shear pin, support ring is arranged in the two-way joint inner chamber and with two-way joint and fixes, support ring is socketed in slide bar upper end, center, is provided with shear pin between support ring and the center slide bar.
3, down-hole, a kind of oil field according to claim 1 and 2 bypass valve formula loss circulation material running tool, it is characterized in that: described passage comprises three along the radially equally distributed radial passage of two-way joint, be provided with the axial passage that the upper end is connected with the radial passage in the sidewall of two-way joint, described axial passage lower end is communicated with cannula cavity.
4, down-hole, a kind of oil field according to claim 1 and 2 bypass valve formula loss circulation material running tool, it is characterized in that: described through hole has three, and three through holes evenly distribute in a circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079678 CN2732989Y (en) | 2004-09-16 | 2004-09-16 | Down-hole by-pass valve type lost circulation material running tool used in oil field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420079678 CN2732989Y (en) | 2004-09-16 | 2004-09-16 | Down-hole by-pass valve type lost circulation material running tool used in oil field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2732989Y true CN2732989Y (en) | 2005-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420079678 Expired - Fee Related CN2732989Y (en) | 2004-09-16 | 2004-09-16 | Down-hole by-pass valve type lost circulation material running tool used in oil field |
Country Status (1)
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| CN (1) | CN2732989Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864924A (en) * | 2010-06-30 | 2010-10-20 | 中国地质大学（武汉） | Method for drilling spot plugging |
| CN106337669A (en) * | 2016-11-02 | 2017-01-18 | 中国石油化工股份有限公司 | The bypass valve capable of repeating switch |
| CN107542490A (en) * | 2017-07-31 | 2018-01-05 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of shut-in well method for scrapping mined out well |
| CN108240191A (en) * | 2016-12-27 | 2018-07-03 | 中国石油天然气股份有限公司 | Lost circulation patching system and patching method |
| CN108952621A (en) * | 2017-05-22 | 2018-12-07 | 中石化石油工程技术服务有限公司 | A kind of interception bag type pluging leaking device |
| CN110185412A (en) * | 2019-05-24 | 2019-08-30 | 中国石油大学(北京) | Underground device for plugging |
-
2004
- 2004-09-16 CN CN 200420079678 patent/CN2732989Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101864924A (en) * | 2010-06-30 | 2010-10-20 | 中国地质大学（武汉） | Method for drilling spot plugging |
| CN106337669A (en) * | 2016-11-02 | 2017-01-18 | 中国石油化工股份有限公司 | The bypass valve capable of repeating switch |
| CN108240191A (en) * | 2016-12-27 | 2018-07-03 | 中国石油天然气股份有限公司 | Lost circulation patching system and patching method |
| CN108952621A (en) * | 2017-05-22 | 2018-12-07 | 中石化石油工程技术服务有限公司 | A kind of interception bag type pluging leaking device |
| CN108952621B (en) * | 2017-05-22 | 2023-09-29 | 中石化石油工程技术服务有限公司 | Intercept pocket type plugging tool |
| CN107542490A (en) * | 2017-07-31 | 2018-01-05 | 山西晋城无烟煤矿业集团有限责任公司 | A kind of shut-in well method for scrapping mined out well |
| CN110185412A (en) * | 2019-05-24 | 2019-08-30 | 中国石油大学(北京) | Underground device for plugging |
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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: 20051012 Termination date: 20130916 |