CN203655191U - Well repairing device capable of reducing pressure and carrying out reverse circulation washing - Google Patents
Well repairing device capable of reducing pressure and carrying out reverse circulation washing Download PDFInfo
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- CN203655191U CN203655191U CN201320870563.7U CN201320870563U CN203655191U CN 203655191 U CN203655191 U CN 203655191U CN 201320870563 U CN201320870563 U CN 201320870563U CN 203655191 U CN203655191 U CN 203655191U
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Abstract
The utility model provides a well repairing device capable of reducing pressure and carrying out reverse circulation washing. The device comprises a flow distributing body, a diffusion pipe, a linkage cover and a spray nozzle; a blind hole with an upward opening is arranged in the flow distributing body; the diffuser is installed at an upper opening of the blind hole; the linkage cover is installed on the diffusion pipe in a cavity in the upper part in the flow distributing body; the spray nozzle is installed in the linkage cover; a spray hole is arranged in the spray nozzle; a diffusion hole is arranged in the diffusion pipe; the spray hole and the diffusion hole are coaxial; a circulation hole leaded to the blind hole is arranged in the flow distributing body; the blind hole is communicated with the exterior of the flow distributing body via the circulation hole; a side-edge vertical flow channel is arranged in the flow distributing body; a linkage groove is arranged in the linkage cover; and an inner cavity of the linkage cover is communicated with the side-edge vertical flow channel via the linkage groove. The device is capable of reducing internal pressure; a circulation system of rock debris and scrap iron milled out in a way of reverse circulation washing where liquid is forwards hit is achieved; and well repairing efficiency and quality are improved.
Description
Technical field
The utility model relates to oil field operation workover rig, and especially a kind of decompression can reverse circulation washing well repairing device.
Background technology
When overlapping milling operation, oil field has two kinds of methods.One method is: drive kelly bar, drilling rod, milling tools rotation to overlap milling to down-hole object by machine carousel, landwaste, iron filings that cover milling goes out are brought it into outside pit shaft by hydraulic circulating system, hydraulic circulating system has direct circulation and two kinds of modes of anti-circulation, direct circulation is squeezed into circulation fluid exactly in kelly bar, drilling rod, milling tools, returns out through the annular space of sleeve pipe and drilling rod.Anti-circulation is squeezed into circulation fluid exactly from the annular space of sleeve pipe and drilling rod, in milling tools, drilling rod, kelly bar, return out.Because direct circulation mode is high to workover fluid and pump speed requirement, deal with meeting bit freezing improperly, cause engineering accident, circulate so General Requirements is counter.But the High Pressure that anti-circulation time is squeezed into is sealed up certainly in the rotation of well head, and the self-styled pressure-bearing of current rotation is low, poor sealing performance, application life is short, needs often to change glue core, makes its inefficiency, while changing glue core, need to be close to pump, and lock of tool drilling easily occurs.Another kind of method when milling operation is overlapped in oil field is: adopt helicoid hydraulic motor to drive milling tools rotation to overlap milling to down-hole object, because the screw rod in helicoid hydraulic motor is solid, can not adopt anti-circulation, landwaste, iron filings that cover milling goes out can only take direct circulation mode to bring it into outside pit shaft.
Therefore, two kinds of operational methods that adopt when milling operation is overlapped in oil field all have problems, and make its well workover efficiency low, and well workover is of poor quality, can not meet the requirement of cover milling operation.
Summary of the invention
The purpose of this utility model is to provide a kind of decompression can reverse circulation washing well repairing device, reduces internal pressure, realizes the landwaste that the milling of forehand liquid reverse circulation washing cover goes out, the circulating system of iron filings, improves well workover efficiency and well workover quality.
The purpose of this utility model can realize by following technical solution:
This decompression can comprise shunting body by reverse circulation washing well repairing device, anemostat, UNICOM's cover, nozzle, described shunting body indoor design has the blind hole of opening upwards, anemostat is installed in upper shed place of blind hole, UNICOM's cover is installed in the upper cavity of described anemostat top and shunting body inside, in described UNICOM cover, nozzle is installed, nozzle interior arranges spray orifice, anemostat inside is diffusion hole, described spray orifice and expansion diffusion hole coaxial line, on described shunting body, offer the circulation port towards blind hole, blind hole is by circulation port and shunting body exterior, in described shunting body, be also provided with side vertical-sprue, on described UNICOM cover, UNICOM's groove is set, UNICOM's cover inner chamber communicates with side vertical-sprue by UNICOM's groove.
The purpose of this utility model also can realize by following technical solution:
Described shunting body upper end is connected under helicoid hydraulic motor or under drilling rod.
The inner pressure cap of installing in described shunting body upper end, nozzle is pushed down in pressure cap lower surface, the spray orifice coaxial line of pressure cap endoporus and nozzle interior, the top of the side vertical-sprue of described shunting body successively by UNICOM's cover, nozzle, pressure cap with under helicoid hydraulic motor or drilling rod inner chamber be communicated with.
Described shunting body lower end adapter sleeve milling tool, the bottom of the side vertical-sprue of described shunting body communicates with milling tools.
The position external diameter that UNICOM's groove is set on described UNICOM cover is less than top external diameter, between this place and the upper cavity of shunting body, forms toroidal cavity.
Described pressure cap indoor design endoporus, endoporus bottom is horn-like, endoporus outlet at bottom diameter equals the injection diameter of nozzle.
Compared to prior art, the utlity model has following beneficial effect:
The circulation fluid of squeezing into flow in sleeve pipe ejection downwards at a high speed from nozzle, pressure in the time spraying in UNICOM's cover reduces, the low-pressure area forming makes sleeve pipe, the inner generation instead of milling tools circulated, realize the landwaste that the milling of forehand liquid reverse circulation washing cover goes out, the circulating system of iron filings, the self-styled high pressure that do not bear of the anti-circulation time well mouth rotary of forehand liquid, there is not the problem of the self-styled damage of rotation, thereby, operating efficiency is high, while adopting helicoid hydraulic motor to drive milling tools rotation to overlap milling to down-hole object, also can realize anti-circulation, can improve well workover quality, meet the requirement of cover milling operation, there is significant economic benefit.
Brief description of the drawings
Fig. 1 is the structure chart that a kind of decompression of the present utility model can reverse circulation washing well repairing device.
In figure: helicoid hydraulic motor 1, pressure cap 2, nozzle 3, UNICOM's cover 4, anemostat 5, shunting body 6, circulation port 7, milling tools 8, UNICOM's groove 9, toroidal cavity 10, side vertical-sprue 11, blind hole 12.
Detailed description of the invention
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing only provides the use of reference with explanation, is not used for the utility model to be limited.
As shown in Figure 1, this decompression can comprise helicoid hydraulic motor 1 by reverse circulation washing well repairing device, pressure cap 2, nozzle 3, UNICOM's cover 4, anemostat 5, shunting body 6, on the blind hole 12 of shunting body 6 inside, anemostat 5 is installed, anemostat 5 is spacing by the shoulder in shunting body 6, it on anemostat 5, is UNICOM's cover 4, in the upper cavity of UNICOM's cover 4 in shunting body 6, the top of UNICOM's cover 4 and the upper cavity fitted seal of shunting body 6, on shunting body 6, there is side vertical-sprue 11, the top of the side vertical-sprue 11 of shunting body 6 is covered UNICOM's groove 9 on 4 by UNICOM and is covered 4 inside with UNICOM and communicate, the bottom of the side vertical-sprue 11 of shunting body 6 communicates with the milling tools 8 that it is connected to shunting body 6 bottoms, 4 interior installation nozzles 3 cover in UNICOM, the diffusion hole coaxial line of the spray orifice of nozzle 3 inside and anemostat 5 inside, shunting body 6 is provided with circulation port 7, the blind hole 12 of shunting body 6 inside is by circulation port 7 and exterior.The position diameter that UNICOM's groove 9 is set on UNICOM cover 4 is less than upper diameter, make its with the upper cavity of shunting body 6 between form toroidal cavity 10, no matter so that UNICOM covers 4 in what orientation all can communicate with milling tools 8.Pressure cap 2 is installed in shunting body 6 upper internal threaded, and nozzle 3 is pushed down in pressure cap 2 lower surfaces, the spray orifice coaxial line of pressure cap 2 endoporus and nozzle 3 inside.Pressure cap 2 endoporus bottoms are horn-like, and outlet diameter equals the injection diameter of nozzle 3, so as to form streamlined, reduce the pressure loss.
If the utility model is supporting with the well workover pipe string being made up of drilling rod, helicoid hydraulic motor, milling tools, shunting body 6 is connected under helicoid hydraulic motor 1.
If the utility model is supporting with the well workover pipe string being made up of kelly bar, drilling rod, milling tools, shunting body 6 is connected under drilling rod.
The utility model is in the time of the milling of well inner sleeve, by ground machine rotating disk or helicoid hydraulic motor driven rotary, in drilling rod, beat circulation fluid, circulation fluid through drilling rod flow nozzle (as adopt helicoid hydraulic motor, circulation fluid is through helicoid hydraulic motor flow nozzle), during through nozzle, flow velocity increases, make it reduce the pressure in UNICOM's cover 4, the landwaste that the cover milling of bottom goes out, iron filings are carried by liquid stream the low-pressure area covering in 4 to UNICOM and flow, flow out from circulation port 7 through anemostat 5 superchargings, the landwaste that cover milling goes out, iron filings are recycled liquid and are carried into ground, another part circulation fluid continues to carry from the outer anti-milling tools 8 that is circulated to bottom of shunting body 6 landwaste that cover milling goes out again, iron filings are to UNICOM's cover 4, form anti-circulation with this, directly cause the landwaste that the milling of oil-water well inner sleeve is gone out, iron filings are all removed.
The foregoing is only preferred embodiment of the present utility model, non-in order to limit the scope of the claims of the present utility model, other use the equivalence of patent spirit of the present utility model to change, and all should all belong to the scope of the claims of the present utility model.
Claims (6)
1. a decompression can reverse circulation washing well repairing device, it is characterized in that comprising shunting body, anemostat, UNICOM's cover, nozzle, described shunting body indoor design has the blind hole of opening upwards, anemostat is installed in upper shed place of blind hole, UNICOM's cover is installed in the upper cavity of described anemostat top and shunting body inside, in described UNICOM cover, nozzle is installed, nozzle interior arranges spray orifice, anemostat inside is diffusion hole, described spray orifice and expansion diffusion hole coaxial line, on described shunting body, offer the circulation port towards blind hole, blind hole is by circulation port and shunting body exterior, in described shunting body, be also provided with side vertical-sprue, on described UNICOM cover, UNICOM's groove is set, UNICOM's cover inner chamber communicates with side vertical-sprue by UNICOM's groove.
2. a kind of decompression according to claim 1 can reverse circulation washing well repairing device, it is characterized in that described shunting body upper end is connected under helicoid hydraulic motor or under drilling rod.
3. a kind of decompression according to claim 2 can reverse circulation washing well repairing device, it is characterized in that the inner pressure cap of installing in described shunting body upper end, nozzle is pushed down in pressure cap lower surface, the spray orifice coaxial line of pressure cap endoporus and nozzle interior, the top of the side vertical-sprue of described shunting body successively by UNICOM's cover, nozzle, pressure cap with under helicoid hydraulic motor or drilling rod inner chamber be communicated with.
4. a kind of decompression according to claim 1 can reverse circulation washing well repairing device, it is characterized in that described shunting body lower end adapter sleeve milling tool, and the bottom of the side vertical-sprue of described shunting body communicates with milling tools.
5. a kind of decompression according to claim 1 can reverse circulation washing well repairing device, it is characterized in that the position external diameter that UNICOM's groove is set on described UNICOM cover is less than top external diameter, forms toroidal cavity between this place and the upper cavity of shunting body.
6. a kind of decompression according to claim 3 can reverse circulation washing well repairing device, it is characterized in that described pressure cap indoor design endoporus, and endoporus bottom is horn-like, and endoporus outlet at bottom diameter equals the injection diameter of nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870563.7U CN203655191U (en) | 2013-12-27 | 2013-12-27 | Well repairing device capable of reducing pressure and carrying out reverse circulation washing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320870563.7U CN203655191U (en) | 2013-12-27 | 2013-12-27 | Well repairing device capable of reducing pressure and carrying out reverse circulation washing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203655191U true CN203655191U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320870563.7U Expired - Fee Related CN203655191U (en) | 2013-12-27 | 2013-12-27 | Well repairing device capable of reducing pressure and carrying out reverse circulation washing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203655191U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747101A (en) * | 2013-12-27 | 2015-07-01 | 中国石油化工股份有限公司 | Pressure-reduction reverse-circulation flushing well repair device |
-
2013
- 2013-12-27 CN CN201320870563.7U patent/CN203655191U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104747101A (en) * | 2013-12-27 | 2015-07-01 | 中国石油化工股份有限公司 | Pressure-reduction reverse-circulation flushing well repair device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140618 Termination date: 20151227 |
|
| EXPY | Termination of patent right or utility model |