CN209556929U - Portable type whipstock - Google Patents
Portable type whipstock Download PDFInfo
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- CN209556929U CN209556929U CN201920162447.7U CN201920162447U CN209556929U CN 209556929 U CN209556929 U CN 209556929U CN 201920162447 U CN201920162447 U CN 201920162447U CN 209556929 U CN209556929 U CN 209556929U
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- head
- skewed slot
- drilling rod
- portable type
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Abstract
The utility model relates to a kind of portable type whipstocks.The data measured according to inclinometer are directly connected to drilling rod interlocking hoop with drilling rod, are in whipstock and naturally droop state.The principle laid particular stress on according to whipstock outer tube side, it can be determined that the opening direction for leading skewed slot is consistent with bore inclining direction, and the opening direction for leading skewed slot can be thus judged according to the well azimuth that inclinometer is measured.Rotary drill rod rotation leads skewed slot opening direction to adjust, and after determining the orientation for needing deflecting, controls vertical shaft depressed fast.When vertical shaft depressed fast, first is that can transfer whipstock to bottom hole, the ground structure of grabbing of outer tube lower end is set to penetrate bottom hole, skewed slot is led in fixation；Second is that cut-off shear pin, makes inner tube be detached from outer tube.Later, drilling tool is slowly transferred, so that drill bit edge is led skewed slot downlink until deflecting can be carried out by reaching deflecting position.After deflecting is completed, drilling rod interlocking hoop is blocked by interior block machine, by inner tube and outer tube wellhole out carried along.So drilling kick-off can be completed disposably.
Description
Technical field
The utility model relates to coal geological drilling construction fields, and in particular to a kind of portable type whipstock.
Background technique
During coal geological drilling, not just or differential settlement, displacement due to drilling machine installation, drilling pressure in construction
Improper, soft or hard rock stratum is alternate and the reasons such as inclination of strata, often leads to drilling and glances off, influences well drilling technology.What is drilled is inclined
The geologic information that tiltedly may cause acquisition is untrue, and ore body, which is beaten, loses, thins or beat thickness, expected exploration purpose is not achieved, even
Drilling rod can be caused to rub, the drilling accidents such as borehole collapse, cause drilling to scrap, waste a large amount of manpower and material resources, it is therefore desirable to make
Variation with whipstock control drilling in spatial position, prevention and the deflection for correcting drilling.
Whipstock used in current geological drilling at home has fixed and two kinds movable.It is fixed directly under arrive
Setting position in hole does not further take out after completing deflecting construction.Due to during drilling construction there are many uncertain factors,
Fixed whipstock, which will cause, increases drilling accident risk, therefore it is suitable for drillings to be near completion, and the construction time is not after deflecting
Construction operation in long hole.Movable whipstock can according to the condition of construction of drilling, as drilling tool rises out together after deflecting, and
It can be used for multiple times.But the erectahle whipstock technical conditions used now require high, processing and fabricating complexity, accident rate is high,
Improper use can cause second accident to drilling.
Utility model content
The purpose of this utility model is to provide the portable type whipstocks that one kind can disposably complete drilling kick-off.
To achieve the above object, the portable type whipstock of the utility model uses following technical scheme:
Portable type whipstock, including outer tube and inner tube, outer tube include head and lead skewed slot, and head is revolving body, leads skewed slot
Cross-sectional shape be the arc of side opening and opposite centre of gyration line tilts set angle, head is machined with radial perforation, head
It is provided with interior block machine on portion's inner wall, compared to perforation described in interior block machine closer to tail end, leads skewed slot tail end and is machined with end point
Sharp grabs ground structure；Inner tube is revolving body, and the centre of gyration line of inner tube is conllinear with the centre of gyration line on head, and inner tube includes boring
Lever lock box cupling and drill bit, the head end of drilling rod interlocking hoop are machined with the screw connection structure for jointed rod, on drilling rod interlocking hoop
Radial blind holes are machined with, the aperture of blind hole is located on the outer peripheral surface of drilling rod interlocking hoop；Drilling rod interlocking hoop head end by described interior
When block machine institute block, perforates corresponding with blind hole and be coated with shear pin in the two.
Outer tube includes being fixed on head and leading the guiding tube between skewed slot, and guiding tube is two-part structure, and leading portion is and head
Portion is total to the revolving body of centre of gyration line, and the cross-sectional shape of back segment is the arc of side opening, and back segment is parallel with the bus of leading portion, institute
State lead skewed slot size is identical as the size of guiding tube and the two in curved opening towards identical so as to lead skewed slot and guiding tube
The smooth no block of junction inner wall.
The tail end on the head is machined with the first external screw thread face, and guiding tube thread set is on the first external screw thread face, guidance
The outer diameter of pipe and the diameter on head are identical, and the perforation is provided on the first external screw thread face.
The distance of the interior block machine away from head tail end is greater than the length in the first external screw thread face.
The ground structure of grabbing is dovetail pawl.
The screw connection structure is the inside tapered thread of the outer cone thread tight fit for drilling rod lower end.
Said inner tube includes the core barrel positioned at the screw terminal at drilling rod interlocking hoop rear and positioned at screw terminal rear, the brill
Head thread is connected to the rear of core barrel.
The tail end of the drilling rod interlocking hoop is machined with outer cone thread, and the head end of screw terminal is machined with for connecting for outer cone thread
Connect the second inside tapered thread of cooperation.
The tail end of the screw terminal is machined with the second external screw thread face, and core barrel is threadedly secured in external thread section rear.
The beneficial effects of the utility model are as follows: when using the utility model deflecting, the data measured according to inclinometer are used
Drilling rod is directly connected to drilling rod interlocking hoop, is in whipstock and naturally droops state.According to whipstock outer tube side lay particular stress on principle,
May determine that the opening direction for leading skewed slot is consistent with bore inclining direction, thus can according to the well azimuth that inclinometer is measured come
The opening direction of skewed slot is led in judgement.Rotary drill rod rotation leads skewed slot opening direction to adjust, after determining the orientation for needing deflecting, control
Vertical shaft depressed fast processed.When vertical shaft depressed fast, first is that can transfer whipstock to bottom hole, make outer tube lower end grabs ground structure bundle
Enter bottom hole, skewed slot is led in fixation；Second is that cut-off shear pin, makes inner tube be detached from outer tube.Later, the revolving speed and brill of drilling are controlled
Pressure, making drill bit, slowly skewed slot downlink is led until deflecting can be carried out by reaching deflecting position in edge.After deflecting is completed, pass through interior block machine
Drilling rod interlocking hoop is blocked, by inner tube and outer tube wellhole out carried along.So can disposably complete to bore using the utility model
Hole deflecting.
Detailed description of the invention
Fig. 1 is the partial sectional view of one embodiment of the portable type whipstock of the utility model；
Fig. 2 is the structural schematic diagram of Fig. 1 middle external tube；
Fig. 3 is the cross-sectional view of Fig. 2；
Fig. 4 is the structural schematic diagram of inner tube in Fig. 1.
Specific embodiment
The specific structure of the portable type whipstock of the utility model is as shown in Figures 1 to 4, including outer tube and inner tube.Outer tube
Including head 1, guiding tube 2 and lead skewed slot 3, the head end on head 1 is provided with the first external screw thread face 11, the first external screw thread face 11 it is big
Diameter is less than the main diameter on head 1.Guiding tube 2 is made of the tubing that outer diameter is equal to 1 outer diameter of head, is two-part structure.Specifically
Including leading portion and back segment, leading portion is the revolving body that centre of gyration line is total to head 1, and back segment is cut away top half thus along axial direction
Its cross-sectional shape is the arc of opening upwards, and back segment is parallel with the bus of leading portion.The front end of leading portion is machined with and the first outer spiral shell
The inner threaded surface that line face 11 is adapted to.
It leads skewed slot 3 to be made of round tube, by top half is cut away along axial direction, thus its cross-sectional shape is opening upwards to round tube
Arc.Lead the rear that skewed slot 3 is fixed on guiding tube 2, be made lead skewed slot 3 round tube diameter and wall thickness with 2 back segment of guiding tube
It is identical, and in the two curved opening towards identical, therefore ensure that connection precision, lead skewed slot 3 and guiding tube 2 after connection can be made
The smooth no block of junction inner wall, be conducive to drilling tool smoothly along its guide direction downlink.In processing, bus is inclined leads skewed slot
When, the arc cushion block that pad sets opening upwards can be fixed in the tail end for leading skewed slot 3, the end for leading skewed slot is lifted and drawn relatively by cushion block
The central axes of conduit 2 tilt set angle upwards.The drilling gradient constructed as needed, can calculate the height of arc cushion block into
And control the tilt angle for leading skewed slot 3.The tail end for leading skewed slot 3 is machined with the sharp dovetail pawl 31 in end, and dovetail pawl 31 is for grabbing
Ground is to realize positioning.
In other embodiments, the centre of gyration line inclination setting of opposing headers 1 can also be processed using other modes
Angle leads skewed slot 3；Dovetail pawl can also be replaced by the ground structure of grabbing of other structures form, as long as its end is sharp, be able to satisfy
Grab ground demand.
The tail end on head 1 is provided with interior block machine 12, and the depth of interior block machine 12 is more than the length in the first external screw thread face 11.First
The perforation 13 radially penetrated through is offered on external screw thread face 11.
Inner tube successively includes drilling rod interlocking hoop 4, screw terminal 5, core barrel 6 and drill bit 7 to tail by head.Drilling rod interlocking hoop 4
Head end is machined with the inside tapered thread 41 for jointed rod 9, and tail end is machined with outer cone thread 42, and drilling rod 9 is connected through a screw thread tightly
It is assemblied in the front of inside tapered thread 41, is machined with drilling rod block machine 43 in the bottom of inside tapered thread 41 inside drilling rod interlocking hoop 4.Screw
First 5 head end is machined with the second inside tapered thread 51 for connecting for outer cone thread 42, and screw terminal 5 passes through with drilling rod interlocking hoop 4
Threaded connection is fixed together.The tail end of screw terminal 5 is machined with the second external screw thread face 52, and core barrel 6 is threadedly secured in external screw thread
52 rears of section.Drill bit 7 is threaded in the rear of core barrel 6.
Radial blind hole 44 is offered on the outer peripheral surface of drilling rod interlocking hoop 4, the aperture of blind hole 44 is located at drilling rod interlocking hoop 4
On outer peripheral surface.The size of the aperture of blind hole 44 and perforation 13, which is coincide, to be connect so that shear pin 8 is radially installed with fixed brill lever lock
Hoop 4 and head 1.
When assembling the portable type whipstock of the utility model, first by drilling rod interlocking hoop 4, screw terminal 5, core barrel 6 and drill bit 7
It is fixed together and is sleeved on inside guiding tube 2, then head 1 is set in drilling rod interlocking hoop 4 by the head end of drilling rod interlocking hoop 4
The head end of drilling rod interlocking hoop 4 is fixed on head 1 by periphery using shear pin 8, later connects head 1 and 2 screw thread of guiding tube
It connects, is finally fixed on drilling rod 9 on drilling rod interlocking hoop 4 by head end.
Head 1, drilling rod interlocking hoop 4, screw terminal 5, core barrel 6 and drill bit 7 are the revolving body of total centre of gyration line.Guidance
Pipe 2 and the structure for leading skewed slot 3 design so that the center of gravity of the portable type whipstock of the utility model is not located at turn around on center line, and
It is biased into the bottom for leading skewed slot 3.
The application method of the utility model is as follows:
The first step needs to be measured the azimuth of each section of drilling with inclinometer before portable type whipstock, and drilling is inclined
Tilted direction determines arrangement and method for construction, the correct deflecting position of selection, determines the inclination angle for leading 3 opposing headers of skewed slot, 1 centre of gyration line
Spend and complete the finishing of outer tube.
Second step will first build cement bottom hole before deflecting, needing deflecting position or less to be sealed with cement.Perfusion
First cleaning drills before cement, outside the substance evacuation aperture that the influences such as mud in hole are theed cement solidifies, waits after theing cement solidifies 2-3 days, under
Drilling tool bottoms out and takes out certain rock core, the quality that drilling tool determines the accurate location of deflecting and judges sealing of hole is measured, so as to deflecting.
Third step, when lower whipstock, the data measured according to inclinometer are directly connected to drilling rod interlocking hoop 4 with drilling rod 9, under
To apart from sealing of hole position it is 2-3 meters above at, upper and lower activity drilling tool is in drilling tool and naturally droops state.According to whipstock outer tube
The principle that side is laid particular stress on, it can be determined that the opening direction for leading skewed slot 3 is consistent with bore inclining direction, thus can be according to inclinometer
The well azimuth measured judges to lead the opening direction of skewed slot 3.
4th step connects drilling rod 9 on drilling machine vertical shaft, and vertical rotation shaft drives the rotation of drilling rod 9 to adjust the opening for leading skewed slot 3
Direction determines the orientation for needing deflecting, and marks.
5th step after orientation adjustment is good, controls vertical shaft depressed fast.When vertical shaft depressed fast, first is that can be by whipstock
Decentralization makes the dovetail pawl 31 of outer tube lower end penetrate bottom hole, skewed slot 3 is led in fixation to bottom hole.Second is that cut-off shear pin 8, makes interior
Pipe is detached from outer tube.
6th step controls the revolving speed and bit pressure of drilling, slow transits through drill bit 7 along the guide direction for leading skewed slot 3 and leads skewed slot
3, reach deflecting position.In deflecting drilling process, the operating principle of light pressure, slow-speed is kept, is passed through when creeping into 1.2 ~ 1.5 meters
Inner tube promotes drill bit 7 and carries rock core, blocks drilling rod interlocking hoop 4 by interior block machine 12, by inner tube and outer tube well out carried along
Drilling kick-off is completed in hole.
In other embodiments, selected various drilling depths be can be according to the size flexible choice of portable type whipstock
, and non-constant value.
Claims (9)
1. portable type whipstock, it is characterised in that: including outer tube and inner tube, outer tube includes head and leads skewed slot, and head is revolution
Body, the cross-sectional shape for leading skewed slot is the arc of side opening and opposite centre of gyration line tilts set angle, and head is machined with diameter
To perforation, it is provided with interior block machine on the inner wall of head, compared to perforation described in interior block machine closer to tail end, leads the processing of skewed slot tail end
Have end it is sharp grab ground structure；Inner tube is revolving body, and the centre of gyration line of inner tube is conllinear with the centre of gyration line on head, interior
Pipe includes drilling rod interlocking hoop and drill bit, and the head end of drilling rod interlocking hoop is machined with the screw connection structure for jointed rod, drilling rod
Radial blind holes are machined on interlocking hoop, the aperture of blind hole is located on the outer peripheral surface of drilling rod interlocking hoop；In the head end of drilling rod interlocking hoop
When by the interior block machine institute block, perforates corresponding with blind hole and be coated with shear pin in the two.
2. portable type whipstock according to claim 1, it is characterised in that: outer tube include be fixed on head and lead skewed slot it
Between guiding tube, guiding tube be two-part structure, leading portion is the revolving body that centre of gyration line is total to head, the cross section shape of back segment
Shape is the arc of side opening, and back segment is parallel with the bus of leading portion, and the size for leading skewed slot is identical as the size of guiding tube and two
Curved opening is towards identical so that the smooth no block of the junction inner wall for leading skewed slot and guiding tube in person.
3. portable type whipstock according to claim 2, it is characterised in that: the tail end on the head is machined with the first outer spiral shell
Line face, for guiding tube thread set on the first external screw thread face, the outer diameter of guiding tube and the diameter on head are identical, and the perforation opens up
On the first external screw thread face.
4. portable type whipstock according to claim 3, it is characterised in that: the distance of the interior block machine away from head tail end is big
Length in the first external screw thread face.
5. portable type whipstock according to claim 3, it is characterised in that: the ground structure of grabbing is dovetail pawl.
6. portable type whipstock according to any one of claim 1 to 4, it is characterised in that: the screw connection structure
For the inside tapered thread of the outer cone thread tight fit for drilling rod lower end.
7. portable type whipstock according to any one of claim 1 to 4, it is characterised in that: said inner tube includes being located at
The screw terminal at drilling rod interlocking hoop rear and core barrel positioned at screw terminal rear, after the drill bit thread is connected to core barrel
Side.
8. portable type whipstock according to claim 7, it is characterised in that: the tail end of the drilling rod interlocking hoop is machined with outer
Taper thread, the head end of screw terminal are machined with for the second inside tapered thread for outer cone thread connection cooperation.
9. portable type whipstock according to claim 7, it is characterised in that: the tail end of the screw terminal is machined with outside second
Flank, core barrel are threadedly secured in external thread section rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162447.7U CN209556929U (en) | 2019-01-30 | 2019-01-30 | Portable type whipstock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920162447.7U CN209556929U (en) | 2019-01-30 | 2019-01-30 | Portable type whipstock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209556929U true CN209556929U (en) | 2019-10-29 |
Family
ID=68309956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920162447.7U Active CN209556929U (en) | 2019-01-30 | 2019-01-30 | Portable type whipstock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209556929U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109538121B (en) * | 2019-01-30 | 2024-05-03 | 河南省资源环境调查四院有限公司 | Portable whipstock |
-
2019
- 2019-01-30 CN CN201920162447.7U patent/CN209556929U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538121A (en) * | 2019-01-30 | 2019-03-29 | 河南省煤田地质局四队 | Portable type whipstock |
| CN109538121B (en) * | 2019-01-30 | 2024-05-03 | 河南省资源环境调查四院有限公司 | Portable whipstock |
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