CN205154052U - Brill short circuit is sent in antifriction of water conservancy formula - Google Patents
Brill short circuit is sent in antifriction of water conservancy formula Download PDFInfo
- Publication number
- CN205154052U CN205154052U CN201520838683.8U CN201520838683U CN205154052U CN 205154052 U CN205154052 U CN 205154052U CN 201520838683 U CN201520838683 U CN 201520838683U CN 205154052 U CN205154052 U CN 205154052U
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- spool
- top connection
- short circuit
- antifriction
- sent
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Abstract
The utility model provides a brill short circuit is sent in antifriction of water conservancy formula belongs to the well drilling field. This brill short circuit is sent in antifriction of water conservancy formula includes top connection, case, spring and lower clutch that the coaxial line set up, the lower part inner wall of top connection and the upper portion outer wall of lower clutch pass through threaded connection, the case is installed in the centre bore of top connection, be provided with the step on the surface of case, the spring mounting is between the up end of this step and lower clutch, the middle part of top connection is equipped with two at least inclined holes, the inclined hole is at the evenly distributed that makes progress in week, each inclined hole is with the inner chamber and outside intercommunication of top connection, every inclined hole all slopes from interior upper portion to export -oriented top connection.
Description
Technical field
The utility model belongs to drilling applications, is specifically related to a kind of hydraulic antifriction and send brill short circuit.
Background technology
In the process of horizontal well drilling, drill string, due to the frictional resistance that weight is understood and well generation is very large of self, causes horizontal segment drill string to be sent to very difficult, seriously constrains the drilling well length of horizontal segment, also reduce drilling efficiency, add financial cost.Therefore trying every possible means the drill string of horizontal segment can well be sent to is a key problem of horizontal well technology.More existing antifriction instruments mostly complex structure, manufacturing cost is high, adds financial cost.
Utility model content
It is large at horizontal well frictional resistance that the purpose of this utility model is to solve drill string, sends a difficult problem for difficulty to, provide a kind of hydraulic antifriction to send brill short circuit.
The utility model is achieved through the following technical solutions:
Brill short circuit is sent in a kind of hydraulic antifriction, comprise be coaxially set top connection, spool, spring and lower contact;
The lower inner wall of described top connection and the external wall of upper portion of lower contact pass through screwed connection;
Described spool is arranged in the centre bore of described top connection, and the external surface of spool is provided with step, and described spring fitting is between this step and upper surface of lower contact;
At least two inclined holes are provided with at the middle part of described top connection; Inclined hole is uniformly distributed in the circumferential; Each inclined hole is by the inner chamber of top connection and ft connection; Each inclined hole is all from inside to outside to the upper angled of top connection.
Described spool is multidiameter structure, comprises large footpath section and the path section of the coaxial line connected successively, and the bottom external cylindrical surface of described path section is provided with four projecting splines, the lower surface of path section is provided with four at circumferentially uniform protruding circular cone;
In described spool, be provided with axially extending bore, this through hole comprises hole, large footpath and the diameter holes of the coaxial line be communicated with successively.
Be provided with step at the endoporus of described top connection, when normally working, this step is withstood in the upper surface of the large footpath section of spool;
Described spring fitting is on the path section outer wall of spool, and the large footpath section of spool and the transition position of path section form described step, and this step is withstood in one end of spring, and the other end withstands the upper surface of lower contact.
The dividing plate with its axes normal is provided with at the middle part of described lower contact, the side of dividing plate is spool bore, opposite side is drill string connecting hole, dividing plate has central through hole, and have on dividing plate at four circumferentially uniform circular cone through holes, spool bore is communicated with drill string connecting hole with circular cone through hole by described central through hole;
Four protruding circular cones on described spool and four conical bore one_to_one corresponding in lower contact, four protruding circular cones can insert in four conical bores respectively.
The inwall of the spool bore of described lower contact is provided with four splines, and four projecting splines of spool bottom coordinate respectively with four splines on lower contact top, can move back and forth vertically in spline.
The large footpath section external cylindrical surface of described spool has annular groove, is respectively equipped with sealing ring in the upper side and lower side of annular groove; When normally creeping into, the inclined hole of top connection is connected with this annular groove.
Be provided with equally distributed three inclined holes in the circumferential at the middle part of described top connection, the central axis of each inclined hole and the axis angle of top connection are 30 °.
The upper end of described top connection and upper drilling string are by screwed connection, and lower end and the lower drilling string of described lower contact pass through screwed connection.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model adopts mud flow rate to control, and operation is simple and reliable;
(2) backward jet has castering action to the drill string lying in well bottom side, reduces the frictional resistance of drill string and well bottom side;
(3) the utility model produces backward jet at drill string feeding direction, and its reaction force promotes drill string and advances;
(4) landwaste of backward jet to deposition has flow-disturbing percussion, helps Transport of Drilling Cutting In A;
(5) structure is simple, and part is few.
Accompanying drawing explanation
Fig. 1 is that the structural representation boring short circuit duty is sent in a kind of hydraulic antifriction of the utility model;
Fig. 2 is that the structural representation boring short circuit resting state is sent in a kind of hydraulic antifriction of the utility model;
Fig. 3 is the sectional view in A-A cross section in Fig. 1
In figure: 1. top connection, 2. spool, 3. spring, 4. lower contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, Figure 2 and Figure 3, brill short circuit is sent in a kind of hydraulic antifriction of the utility model, is be made up of top connection 1, spool 2, spring 3 and lower contact 4; Its architectural feature is: top connection 1 bottom and lower contact 4 top screwed connection; In the middle part of top connection 1, circumference evenly arranges three inclined holes, and inclined hole central axis and top connection 1 central axis angle are 30 °, inclined hole outlet deflection top connection 1 top; It is inner that spool 2 is arranged on top connection 1, and spring 3 is arranged on spool 2 cylindrical step, and during installation, spring 3 is in compressive state; Spool 2 internal openings, center, lower surface arranges a through hole, and circumference evenly arranges four protruding circular cones; Lower contact 4 inside center arranges a baffle plate, and baffle center arranges a through hole, and baffle plate circumference evenly arranges four conical bores, and baffle plate four conical bores are corresponding with protruding circular cone position, four, spool 2 lower surface; Spool 2 lower outer circumferential is to evenly arranging four projecting splines, and lower contact 4 top endoporus circumference evenly arranges four splines, and four projecting splines of spool 2 bottom insert in four splines on lower contact 4 top; Top connection 1 and upper drilling string screwed connection, lower contact 4 and lower drilling string screwed connection.
A kind of hydraulic antifriction of the utility model is sent and is bored the operating principle of short circuit and be: during normal drilling well, spool 2 is in Fig. 2 state; When drill string is sent at need, increase mud flow rate, spool 2 is Compress Spring 3 under drilling fluid differential pressure action, now be in Fig. 1 state, a drilling fluid part continues to flow to lower drilling string, and another part is three inclined hole directive bore hole annulus in the middle part of top connection 1, promotes drill string and moves ahead.
The utility model adopts mud flow rate to control, and operation is simple and reliable; Produce backward jet at drill string feeding direction, its reaction force promotes drill string and advances.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art, on the basis that the utility model discloses principle, be easy to make various types of improvement or distortion, and the structure be not limited only to described by the above-mentioned specific embodiment of the utility model, therefore previously described just preferred, and not there is restrictive meaning.
Claims (7)
1. a brill short circuit is sent in hydraulic antifriction, it is characterized in that: brill short circuit is sent in described hydraulic antifriction, comprise be coaxially set top connection, spool, spring and lower contact;
The lower inner wall of described top connection and the external wall of upper portion of lower contact pass through screwed connection;
Described spool is arranged in the centre bore of described top connection, and the external surface of spool is provided with step, and described spring fitting is between this step and upper surface of lower contact;
At least two inclined holes are provided with at the middle part of described top connection; Inclined hole is uniformly distributed in the circumferential; Each inclined hole is by the inner chamber of top connection and ft connection; Each inclined hole is all from inside to outside to the upper angled of top connection;
Described spool is multidiameter structure, comprises large footpath section and the path section of the coaxial line connected successively, and the bottom external cylindrical surface of described path section is provided with four projecting splines, the lower surface of path section is provided with four at circumferentially uniform protruding circular cone;
In described spool, be provided with axially extending bore, this through hole comprises hole, large footpath and the diameter holes of the coaxial line be communicated with successively.
2. brill short circuit is sent in hydraulic antifriction according to claim 1, it is characterized in that: be provided with step at the endoporus of described top connection, and when normally working, this step is withstood in the upper surface of the large footpath section of spool;
Described spring fitting is on the path section outer wall of spool, and the large footpath section of spool and the transition position of path section form described step, and this step is withstood in one end of spring, and the other end withstands the upper surface of lower contact.
3. brill short circuit is sent in hydraulic antifriction according to claim 2, it is characterized in that: be provided with the dividing plate with its axes normal at the middle part of described lower contact, the side of dividing plate is spool bore, opposite side is drill string connecting hole, dividing plate has central through hole, and have on dividing plate at four circumferentially uniform circular cone through holes, spool bore is communicated with drill string connecting hole with circular cone through hole by described central through hole;
Four protruding circular cones on described spool and four conical bore one_to_one corresponding in lower contact, four protruding circular cones can insert in four conical bores respectively.
4. brill short circuit is sent in hydraulic antifriction according to claim 3, it is characterized in that: on the inwall of the spool bore of described lower contact, be provided with four splines, four projecting splines of spool bottom coordinate respectively with four splines on lower contact top, can move back and forth vertically in spline.
5. send brill short circuit according to the arbitrary described hydraulic antifriction of Claims 1-4, it is characterized in that: on the large footpath section external cylindrical surface of described spool, have annular groove, be respectively equipped with sealing ring in the upper side and lower side of annular groove; When normally creeping into, the inclined hole of top connection is connected with this annular groove.
6. brill short circuit is sent in hydraulic antifriction according to claim 5, it is characterized in that: be provided with equally distributed three inclined holes in the circumferential at the middle part of described top connection, the central axis of each inclined hole and the axis angle of top connection are 30 °.
7. brill short circuit is sent in hydraulic antifriction according to claim 6, it is characterized in that: the upper end of described top connection and upper drilling string are by screwed connection, and lower end and the lower drilling string of described lower contact pass through screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838683.8U CN205154052U (en) | 2015-10-28 | 2015-10-28 | Brill short circuit is sent in antifriction of water conservancy formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520838683.8U CN205154052U (en) | 2015-10-28 | 2015-10-28 | Brill short circuit is sent in antifriction of water conservancy formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205154052U true CN205154052U (en) | 2016-04-13 |
Family
ID=55689760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520838683.8U Active CN205154052U (en) | 2015-10-28 | 2015-10-28 | Brill short circuit is sent in antifriction of water conservancy formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205154052U (en) |
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2015
- 2015-10-28 CN CN201520838683.8U patent/CN205154052U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |