CN2825915Y - Oriented well drilling tool with guide rail and spline - Google Patents
Oriented well drilling tool with guide rail and spline Download PDFInfo
- Publication number
- CN2825915Y CN2825915Y CN 200520016090 CN200520016090U CN2825915Y CN 2825915 Y CN2825915 Y CN 2825915Y CN 200520016090 CN200520016090 CN 200520016090 CN 200520016090 U CN200520016090 U CN 200520016090U CN 2825915 Y CN2825915 Y CN 2825915Y
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- guide rail
- trip pin
- spline
- driving shaft
- drilling tool
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- Expired - Fee Related
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Abstract
The utility model relates to a kind of guide rail spline oriented drilling tool, and it comprises shell, driving shaft, trip pin, the sealing of moving about, spring leaf, driven shaft, bearing, ball key universal joint, whipstock; Described driving shaft appearance has guide rail, described outer casing inner wall have one with the synchronous internal spline of trip pin, driving shaft an external splines arranged in appearance, guide rail is unidirectional rotary island shape passage, has only import and export; Internal spline, the external splines state that staggers can pass mutually, and the state of being overlapping is in contact with one another the face carrying and transmits the pressure of the drill.The utility model is used as power with rotating disk, alternative helicoid hydraulic motor, this instrument have two kinds of duties both deflecting creep into state and hold angle creeps into state, duty can by on put and put drilling tool conversion, operation is accurately convenient, state is directly perceived, does not need manually to angle.The utility model can bear bigger moment of torsion, and its length is short, adapts to littler turning radius of curvature.
Description
Technical field
The utility model relates to a kind of directional drill tool that is used as power with rotating disk, alternative helicoid hydraulic motor be used for the directional well of oil (gas) well exploration and development process and length, in, the directed horizontal well of short radius, cluster well, branch hole drilling.
Background technology
Existing directed horizontal well instrument can be called the rotating disk rotary steering drilling tool referring to name, the patent No. is 03236776.7 technical scheme, traditional directed horizontal well instrument adopts screw rod to be used as power, being short of power of screw rod, length is too big, deflecting creeps into, hold angle creeps into and will make a trip repeatedly, causes long construction period.Existing Short Radius Horizontal Wells instrument needs to divide several brills to finish inefficiency deflecting and horizontal-extending.
Summary of the invention
The purpose of this utility model provides a kind of guide rail spline oriented drilling tool, and it can solve during directional well creeps into, and under situation about not making a trip, but both deflecting crept into, but the also hold angle problem of creeping into; Just creep into problem with same instrument applicable to the directional well and the directed horizontal well of different radii (long, in, short radius); Because whipstock (elbow) is very near from drill bit, build angle rate can be accomplished very high, use same instrument be applicable to long, in, short radius well or in a time is bored, get the problem of the different well section of several radius of curvature; Solve the problem that helicoid hydraulic motor is short of power, length is too big; Under situation about not making a trip, deflecting and horizontal-extending are bored the technical problem of finishing one time.
Increase internal spline and external splines and transmit the pressure of the drill, carrying is sold in the replacement trip, and is stressed even because spline is uniform vertically, overcomes the shortcoming that one-sided wall unbalance stress is sold in trip, reduces trip and sells wearing and tearing and stress deformation.Guide Rail Design is more smooth and easy, prevent to block when the trip pin from cooperating with guide rail, the position and the angle of specific internal spline, external splines, trip pin and guide rail, carry or transfer drilling tool on only needing, the trip pin moves along track in guide rail, make shell relatively rotate the angle of regulation and driving shaft and enclosure axis to relative displacement, internal spline, external splines are along with contraposition, finishing staggers passes or staggered carrying, the trip pin blocks or unclamps internal layer and outer field operation, creeps into the conversion of creeping into hold angle thereby finish deflecting, and operation is accurately convenient, state is directly perceived, does not need manually to angle.The utility model can bear bigger moment of torsion, and its length is short, and the build angle rate height adapts to littler turning radius of curvature.
The purpose of this utility model is achieved in that
A kind of guide rail spline oriented drilling tool, it comprises shell, driving shaft, trip pin, the sealing of moving about, spring leaf, driven shaft, bearing, ball key universal joint, whipstock; Described driving shaft appearance has guide rail, and interior six sides are arranged in its underpart, and there is the hole for the circulating mud and the sealing usefulness of moving about its inside; A fixing trip pin is arranged on the described outer casing inner wall; Described driven shaft is an outer hexagonal structure, is fixed with one group of sealing of moving about thereon; Shell, bearing, whipstock and bit adapter are connected to form a skin; Driving shaft, driven shaft, ball key universal joint, connector and bit adapter are connected to form an internal layer; Described driving shaft and driven shaft are slidingly connected with the hexagonal structure cooperation; The guide rail of described driving shaft appearance is equipped with a whipstock for the guide slide of trip pin in outer field bottom;
Described outer casing inner wall has one and the synchronous internal spline of trip pin, driving shaft an external splines arranged in appearance, guide rail is unidirectional rotary island shape passage, has only import and export, import and export the opposite two summits are arranged, passage has one to be tilted to hypomere by import and export, through one straight to hypomere, is tilted to hypomere through one again, be tilted to epimere through one again, be tilted to hypomere through one again, straightly be tilted to epimere through one again, get back to import and export to epimere and;
Be provided with trip finger setting groove and anchor point in the guide rail, the slideway turning also is that internal spline, external splines IPN are accurately directed for the spacing corner of the trip pin direction of motion; Described internal spline, external splines pass mutually and the back trip pin that is overlapping is hung to swim in the finger setting groove, internal layer, skin are synchronous rotary state, the trip pin shifts out from guide rail, internal layer, skin are freed state each other, internal spline, the external splines state that staggers can pass mutually, and the state of being overlapping is in contact with one another the face carrying and transmits the pressure of the drill.
Being shaped as of described guide rail, with the guide rail import and export is along 0 ° of circumference starting point, and straight to the 90 ° positions of hypomere at circumference, 0 ° of position of circumference is got back on a summit, hold angle creeps into state trip pin loca in-45 ° of positions of circumference, another summit and straight to-90 ° positions of epimere at circumference.
A seal assembly is arranged in the upper end of shell.The bearing of joining at the two ends of shell is a thrust bearing.Internal layer, the limited position of outer interlayer bearing.Welding is adopted in the following fixed end both sides of shell and spring leaf, and shell has chip area below the following fixed end of spring leaf, chip area vertically under the spring leaf below of fixed end connect, promptly fixed end radially has living space to shell under the spring leaf.
Advantage of the present utility model and good effect:
The utility model is used as power with rotating disk, alternative helicoid hydraulic motor, this instrument has two kinds of duties, and both deflecting drilling state and hold angle crept into state, duty can by on put and put drilling tool conversion, the every put-on and delegated of drilling tool once, working method is just changed once, and difference is gone into by the reflection side of being of well head.With the utility model 170mm external diameter instrument is example, and maximum length 2550mm, deflecting creep into length 2080mm, and hold angle creeps into length 2410mm, and poor 330mm goes in the side, and torsional strength 15000N-m allowable can bear bigger moment of torsion, adapts to littler turning radius of curvature.
In the shell upper end seal assembly is arranged, it can prevent that sand from entering in the instrument, can also play the effect of setting upright driving shaft.The bearing of joining at the two ends of shell is a thrust bearing, and stressed reasonable, bearing capacity is big.Described internal layer, outer interlayer adopt a plurality of Limit Bearings to connect, and prevent fish.
Apply the pressure of the drill by shell, do not have normal pressure between the ball key universal joint, reduced the friction between the ball key universal joint.Be used as power with rotating disk, power is big, not limited by well depth, discharge capacity, pump pressure, the pressure of the drill.Under the situation about not making a trip, the convertible mode of creeping into, but both deflecting crept into, but also hold angle creeps into, and enhances productivity.Instrument can adapt to the well track of different curvature radius or get the well section of a plurality of different curvature radius in one time is bored.
Description of drawings
Fig. 1 is that the utility model is swum the overall structure schematic diagram when selling the M point, and Fig. 3 to Fig. 8 is the correspondence position cross-sectional view of Fig. 1, and Fig. 2 is the guide rail expanded view of Fig. 1.
Fig. 9 is that the utility model is swum the partial enlarged drawing when selling the A point, and Figure 11 is the correspondence position internal spline cross-sectional view of Fig. 9, and Figure 12 is the external splines cross-sectional view of Fig. 9, and Figure 10 is the trip pin guide rail expanded view of Fig. 9.
Figure 13 is that the utility model is swum the partial enlarged drawing when selling the B point, and Figure 15 is the correspondence position internal spline cross-sectional view of Figure 13, and Figure 16 is the external splines cross-sectional view of Figure 13, and Figure 14 is the trip pin guide rail expanded view of Figure 13.
Figure 17 is that the utility model is swum the partial enlarged drawing when selling the L point, and Figure 19 is the correspondence position internal spline cross-sectional view of Figure 17, and Figure 20 is the external splines cross-sectional view of Figure 17, and Figure 18 is the trip pin guide rail expanded view of Figure 17.
Figure 21 is that the utility model is swum the partial enlarged drawing when selling the C point, and Figure 23 is the correspondence position internal spline cross-sectional view of Figure 21, and Figure 24 is the external splines cross-sectional view of Figure 21, and Figure 22 is the trip pin guide rail expanded view of Figure 21.
Figure 25 is that the utility model is swum the partial enlarged drawing when selling the D point, and Figure 27 is the correspondence position internal spline cross-sectional view of Figure 25, and Figure 28 is the external splines cross-sectional view of Figure 25, and Figure 26 is the trip pin guide rail expanded view of Figure 25.
Figure 29 is the structure chart of fixed end under the duty of the utility model deflecting spring leaf when creeping into and chip area and the spring leaf.
The specific embodiment
Operating principle of the present utility model and embodiment can be referring to accompanying drawings: in the 1st to the 6th page of accompanying drawing, middle top is trip pin guide rail expanded view, and the rule on expanded view right side is represented the angle value on the corresponding circumference.1 is top connection in the accompanying drawing, the 2nd, and driving shaft, the 3rd, thrust bearing, the 4th, spring leaf, the 5th, shell, the 6th, internal spline, the 7th, external splines, the 8th, the sealing of moving about, the 9th, trip pin, the 10th, guide rail, the 11st, driven shaft, the 12nd, interior six sides, the 13rd, endosphere key, the 14th, sealing ring, the 15th, ectosphere key, the 16th, whipstock, the 17th, Limit Bearing, 18 connectors, the 19th, bit adapter, the 20th, seal assembly, the 21st, chip area, the 22nd, weld bond.
Each position component concerned when Fig. 9 to Figure 12 proposed the drilling tool trip on being and sells A point.
Figure 13 to Figure 16 carry on being drilling tool trip pin by the A point to the B point, external splines 7 passes each position component relation of internal spline 6 backs.
Each position component concerned when Figure 17 to Figure 20 carried drilling tool trip pin on being and enters L point.
Figure 21 to Figure 24 transfers drilling tool trip pin each position component relation when the C point, and creep into state for hold angle this moment.
Figure 25 to Figure 28 puies forward drilling tool trip pin each position component relation when the D point on being, enters the deflecting duty after this some orientation is transferred drilling tool.
The following fixed end of shell and spring leaf adopts welding as described in Figure 29, the 22nd, weld bond, shell has chip area 21 below the following fixed end of spring leaf, chip area vertically under the spring leaf below of fixed end connect, can guarantee that spring leaf can reset smoothly and not precipitated drilling cuttings or other solid phase blocked when last end pressure disappearance.
A kind of guide rail spline oriented drilling tool, it comprises shell, driving shaft, trip pin, the sealing of moving about, spring leaf, driven shaft, bearing, ball key universal joint, whipstock; Described driving shaft appearance has guide rail, and interior six sides are arranged in its underpart, and there is the hole for the circulating mud and the sealing usefulness of moving about its inside; A fixing trip pin is arranged on the described outer casing inner wall; Described driven shaft is an outer hexagonal structure, is fixed with one group of sealing of moving about thereon; Shell, bearing, whipstock and bit adapter are connected to form a skin; Driving shaft, driven shaft, ball key universal joint, connector and bit adapter are connected to form an internal layer; Described driving shaft and driven shaft are slidingly connected with the hexagonal structure cooperation; The guide rail of described driving shaft appearance is equipped with a whipstock for the guide slide of trip pin in outer field bottom;
Described outer casing inner wall has one and the synchronous internal spline of trip pin, driving shaft an external splines arranged in appearance, guide rail is unidirectional rotary island shape passage, has only one to import and export M, import and export the opposite two summit L, D are arranged, passage has one to be tilted to hypomere MA by import and export, through one straight to hypomere AB, is tilted to hypomere BL through one again, be tilted to epimere LC through one again, be tilted to hypomere CD through one again, straightly be tilted to epimere DM through one again, get back to and import and export M to epimere and;
Be provided with trip finger setting groove and anchor point in the guide rail, the slideway turning also is that internal spline, external splines IPN are accurately directed for the spacing corner of the trip pin direction of motion; Described internal spline, external splines pass mutually and the back trip pin that is overlapping is hung to swim in the finger setting groove (° position, C point-45 among Figure 21 to Figure 24), internal layer, skin are synchronous rotary state, the trip pin shifts out from guide rail, internal layer, skin are freed state each other, internal spline, the external splines state that staggers can pass mutually, and the state of being overlapping is in contact with one another the face carrying and transmits the pressure of the drill.
Being shaped as of described guide rail, importing and exporting M with guide rail is along 0 ° of circumference starting point, straight to the 90 ° positions of hypomere AB at circumference, a summit L gets back to 0 ° of position of circumference, hold angle creeps into state trip pin loca C in-45 ° of positions of circumference, another summit D and straight to-90 ° positions of epimere at circumference.
A seal assembly is arranged in the upper end of shell.The bearing of joining at the two ends of shell is a thrust bearing.Internal layer, the limited position of outer interlayer bearing.Welding is adopted in the following fixed end both sides of shell and spring leaf, and shell has chip area below the following fixed end of spring leaf, chip area vertically under the spring leaf below of fixed end connect, promptly fixed end radially has living space to shell under the spring leaf.
The utility model is made up of set-out device, ball key universal joint, guidance system three parts.
The ground set-out device is moved about by top connection 1, driving shaft 2, interior six sides 12, driven shaft 11 (outer six sides) and seals 8, trip pin 9, guide rail 10, internal spline 6, external splines 7 compositions such as grade.
Guidance system is by bit adapter 1, thrust bearing 3, shell 5, and spring leaf 4, chip area 21 (seeing Figure 29), whipstock 16, following thrust bearing are formed.
As Fig. 1 to Fig. 8: it is exactly the utility model that set-out device, ball key universal joint, guidance system three parts are assembled into one.When deflecting creeps into, moment of torsion is by top connection 1, driving shaft 2, interior six sides 12, driven shaft (outer six sides) 11, ball key universal joint (inside and outside ball key 13 15), connector 18, bit adapter 19 is to drill bit.The pressure of the drill then is added on the drill bit by top connection 1, last thrust bearing 3, shell 5, whipstock, following thrust bearing.Move about the sealing 8 and sealing ring 14 can guarantee the mud normal circulation.In said process, because interior six sides 12 on the driving shaft 2 can slide relatively vertically with driven shaft 11 (outer six sides), the pressure of the drill can compress spring leaf 4 (having four to see Figure 29 :), the upper end of spring leaf is constrained on the shell 5 by dovetail groove, can only endwisely slip, the both sides, lower end of spring leaf and shell welding, the pressure of the drill forces the tight borehole wall of the outstanding card in spring leaf middle part, consequently shell 5 whipstock 16 that do not change, be connected with shell 5 does not change, whipstock 16 can allow drill bit creep into toward the direction all the time, and Here it is, and deflecting creeps into.
This can be understood as a bent sub has been divided into internal layer and skin, and internal layer is used for transfer torque, and skin is used for the control guiding.It has two kinds of duties; Inside and outside layer is that hold angle creeps into when rotating together, and internal layer changes skin when not changeing is that deflecting creeps into, duty can by on put and put drilling tool conversion.
Shown in the guide rail schematic diagram, the guide rail of driving shaft appearance is trip pin guiding, it is unidirectional rotary island shape passage, has only a mouth turnover, be provided with trip pin slideway, locating slot and anchor point in the guide rail, the slideway turning is for the trip spacing corner of the pin direction of motion and be that inside and outside spline IPN is accurately directed, when swim pin, internal spline, when external splines is in 0 ° together, inside and outside spline is in and can passes phase place, and two other can pass phase place and be ± 90 °; Described trip pin is hung and is swum among the finger setting groove C, and inside and outside layer is synchronous rotary state, and the trip pin shifts out from guide rail, and inside and outside layer is freed state each other.Become hold angle and creep into and then stop earlier to bore if deflecting crept into, on carry drilling tool, the spring leaf return, under the effect of deadweight and pump pressure, driving shaft and guide rail are up, enter guide rail with the trip pin of shell one by the M point, during to the A point, internal spline 7 is in 90 ° together with external splines 6, A is a straight line to B, and when the trip pin arrived the B point, external splines passed internal spline, drill bit left the shaft bottom when L point was sold in trip, transfer drilling tool again when making trip pin enter locating slot C point-45 °, external splines can not pass through internal spline, is subjected to internal spline support (going into less than former side), retrained mutually by trip pin and guide rail, shell can not rotate relatively with driving shaft.Guide rail when drilling again on the driving shaft can be with the rotation of trip pin, and the trip pin is fixed on the shell, and shell is rotation together also, and whipstock also changes, and whipstock at this moment is 360 degree guiding, and the result enlarges hole diameter, and Here it is, and hold angle creeps into.At this moment the pressure of the drill is added to drill bit by driving shaft, external splines, internal spline, shell.Because set-out device was elongated when hold angle crept into, and went into less than former side, this is to judge the unique conditional that whether hangs up.Hold angle to be crept into and become deflecting and creep into, then need the trip pin is shifted out from guide rail, method is proposed the drilling tool trip on being and is sold D (90 °) point, if record the orientation of whipstock this moment is N °, transfer drilling tool trip pin again and get back to M point (going into to change in the side) by the D point, the orientation of this moment be N °-(90 °+shell rotates trip pin radial angle number of degrees more), the utility model is N °-105 °, because the trip pin just left the D point after drill bit contacted the shaft bottom earlier, guide rail forces trip pin (shell and whipstock) to get back to N °-105 °, just propped up the borehole wall at the firm getaway spring leaf of trip pin, add 1-2 ton the pressure of the drill earlier and guarantee that spring leaf is compacted, restart rotating disk and can carry out deflecting and creep into, deflecting orientation at this moment is (N-105) degree.Drilling tool of every handling, the duty of instrument just changes once, judges that the unique method amount of the being side of the duty of instrument is gone into.No matter trip pin position how, move about sealing 8 and sealing ring 14 all guarantee system sealing, and circulation is normal.Described internal layer, outer interlayer adopt a plurality of Limit Bearings to connect, and when internal layer is twisted off, are subjected to the restriction of Limit Bearing, and fish is in the enclosure restrained, and the down-hole does not have fish.
Described trip pin and internal spline same-phase; Described trip pin in guide rail every turnover once, under the guiding of guide rail, external splines will be finished following program: 1, the up internal spline that passes in the time of 90 ° of external splines; 2, external splines is descending locates to push down internal spline at-45 °; Pass internal spline and reset to descending again when 3, going upward to-90 °; In-45 ° of locating slots of locating, when external splines was pushed down internal spline, for hold angle creeps into state, mutual pressure was exactly the pressure of the drill to described trip pin in guide rail, and the trip pin shifts out from guide rail to deflecting and creeps into state.
It adopts the sealing and outer sealed at both ends of moving about.Under the control of guide rail, outer flower-key on the driving shaft can upper and lowerly pass the internal spline of outer casing inner wall, external splines on the driving shaft can be pushed down the internal spline on the shell and can bear the pressure of the drill, the trip pin just in time is in the guide rail locating slot when the external splines on the driving shaft is pushed down internal spline on the shell, and creep into state for hold angle this moment.When the trip pin is that deflecting creeps into state when shifting out from guide rail.
Claims (6)
1, a kind of guide rail spline oriented drilling tool, it comprises shell, driving shaft, trip pin, the sealing of moving about, spring leaf, driven shaft, bearing, ball key universal joint, whipstock; Described driving shaft appearance has guide rail, and interior six sides are arranged in its underpart, and there is the hole for the circulating mud and the sealing usefulness of moving about its inside; A fixing trip pin is arranged on the described outer casing inner wall; Described driven shaft is an outer hexagonal structure, is fixed with one group of sealing of moving about thereon; Shell, bearing, whipstock and bit adapter are connected to form a skin; Driving shaft, driven shaft, ball key universal joint, connector and bit adapter are connected to form an internal layer; Described driving shaft and driven shaft are slidingly connected with the hexagonal structure cooperation; The guide rail of described driving shaft appearance is equipped with a whipstock for the guide slide of trip pin in outer field bottom;
It is characterized in that: described outer casing inner wall has one and the synchronous internal spline of trip pin, driving shaft an external splines arranged in appearance, guide rail is unidirectional rotary island shape passage, has only import and export, import and export the opposite two summits are arranged, passage has one to be tilted to hypomere by import and export, through one straight to hypomere, is tilted to hypomere through one again, be tilted to epimere through one again, be tilted to hypomere through one again, straightly be tilted to epimere through one again, get back to import and export to epimere and;
Be provided with trip finger setting groove and anchor point in the guide rail, the slideway turning also is that internal spline, external splines IPN are accurately directed for the spacing corner of the trip pin direction of motion; Described internal spline, external splines pass mutually and the back trip pin that is overlapping is hung to swim in the finger setting groove, internal layer, skin are synchronous rotary state, the trip pin shifts out from guide rail, internal layer, skin are freed state each other, internal spline, the external splines state that staggers can pass mutually, and the state of being overlapping is in contact with one another the face carrying and transmits the pressure of the drill.
2, guide rail spline oriented drilling tool according to claim 1, it is characterized in that: being shaped as of described guide rail, with the guide rail import and export is along 0 ° of circumference starting point, straight to the 90 ° positions of hypomere at circumference, 0 ° of position of circumference is got back on a summit, hold angle creeps into state trip pin loca in-45 ° of positions of circumference, another summit and straight to-90 ° positions of epimere at circumference.
3, guide rail spline oriented drilling tool according to claim 1 is characterized in that: a seal assembly is arranged in the upper end of shell.
4, guide rail spline oriented drilling tool according to claim 1 is characterized in that: the bearing of joining at the two ends of shell is a thrust bearing.
5, guide rail spline oriented drilling tool according to claim 1 is characterized in that: internal layer, the limited position of outer interlayer bearing.
6, guide rail spline oriented drilling tool according to claim 1, it is characterized in that: welding is adopted in the following fixed end both sides of shell and spring leaf, shell has chip area below the following fixed end of spring leaf, chip area vertically under the spring leaf below of fixed end connect, promptly fixed end radially has living space to shell under the spring leaf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016090 CN2825915Y (en) | 2005-04-19 | 2005-04-19 | Oriented well drilling tool with guide rail and spline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016090 CN2825915Y (en) | 2005-04-19 | 2005-04-19 | Oriented well drilling tool with guide rail and spline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2825915Y true CN2825915Y (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016090 Expired - Fee Related CN2825915Y (en) | 2005-04-19 | 2005-04-19 | Oriented well drilling tool with guide rail and spline |
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| Country | Link |
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| CN (1) | CN2825915Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946057A (en) * | 2007-12-21 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Steerable drilling system |
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| CN103061671A (en) * | 2011-10-24 | 2013-04-24 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN114109251A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device and use method of composite directional drilling |
-
2005
- 2005-04-19 CN CN 200520016090 patent/CN2825915Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101946057A (en) * | 2007-12-21 | 2011-01-12 | 普拉德研究及开发股份有限公司 | Steerable drilling system |
| CN102061888A (en) * | 2011-01-04 | 2011-05-18 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| CN102061888B (en) * | 2011-01-04 | 2013-03-27 | 潍坊盛德石油机械制造有限公司 | Impact-resistant screw drill tool |
| CN103061671A (en) * | 2011-10-24 | 2013-04-24 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN103061671B (en) * | 2011-10-24 | 2014-12-10 | 中国石油化工股份有限公司 | Underground anti-drag twisting reducer |
| CN114109251A (en) * | 2021-11-18 | 2022-03-01 | 西南石油大学 | Control device and use method of composite directional drilling |
| CN114109251B (en) * | 2021-11-18 | 2023-08-22 | 西南石油大学 | Control device for composite directional drilling and use method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |