CN201554370U - Four-in-one drilling tool structure with three centering devices - Google Patents
Four-in-one drilling tool structure with three centering devices Download PDFInfo
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- CN201554370U CN201554370U CN2009202436715U CN200920243671U CN201554370U CN 201554370 U CN201554370 U CN 201554370U CN 2009202436715 U CN2009202436715 U CN 2009202436715U CN 200920243671 U CN200920243671 U CN 200920243671U CN 201554370 U CN201554370 U CN 201554370U
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Abstract
The utility model provides a four-in-one drilling tool structure with three centering devices, relating to a drilling tool structure in well drilling. The structure comprises a single bent screw rod stabilizer, a stabilizer, a tail stabilizer, a drill head, a single bent screw rod, a short drill collar and a nonmagnetic drill rod, wherein the stabilizer is arranged between the short drill collar and the nonmagnetic drill rod, and the upper end of the nonmagnetic drill rod is connected with the tail stabilizer. By adopting the mode of enhancing centering effect and reducing the deflection, the utility model provides the four-in-one drilling tool structure with the three centering devices, which solves the problem that the well deviation is increased along with the inclination of a stratum due to the lack of stabilization mechanisms on drilling tool assembly, can meet the drilling construction task for secondarily drilling straight wells and positioning wells and completely drilling whole well segment, and has a higher mechanical drilling speed.
Description
Technical field
A kind of four-in-one drilling tool structure that has three centralizers, the utility model relates to a kind of well drilling tool structure, can realize the efficient control of the dark directional well track of centering by this drilling tool structure.
Background technology
In order to realize creeping into fast, accelerate the purpose of the exploration and development speed of petroleum gas, in the prior art, the field engineering technician has found out many rapid drilling technologies, wherein the rapid drilling four-in-one drilling tool is wherein a kind of, the mode of this rapid drilling mainly be with four kinds of different drilling assembly in a drilling assembly, once finish original needs and do the drilling well work that makes a trip for four times and just can finish, therefore shortened greatly because the prolongation of the drilling period that the time brought of the replacing drilling tool that makes a trip, the principal character of this technology is when implementing wellbore trace control, at first realize the stable of hole deviation degree, and the control by track edges down hole deviation in steady, and the field technician is called " surely edging down " with this technology; This technology has obtained a large amount of popularizations and application after proposing, shortening in 7 days from original more than 30 days aspect the raising bit speed, therefore, outstanding contribution has been made in drilling well speed-raising work; But, because the difference of subterranean layer position, also can bring the adaptive variation of drilling tool, as: in the area, Wuqi County of long celebrating block, adopt the four-in-one drilling tool of prior art to carry out rapid drilling, though on the specification of four-in-one drilling tool, done bigger change, but in the use of reality, in TRAJECTORY CONTROL, still occurred in layer position, river, Lip river, causing hole deviation to heighten, and increasing hole angle or the unsettled characteristic of drop angle rule have appearred in the stratum of bottom, layer position, river, Lip river, through overtesting, the subject matter that present four-in-one drilling tool technology exists is: drilling assembly top, also can occur changing with the variation on stratum in the bottom so will increase the problem of hole deviation with the gradient on stratum when the stratum gradient is big owing to lack a stabilizing mechanism, cause hole deviation degree instability problem, finally caused in the drilling process, slided repeatedly and adjust hole deviation, incured loss through delay bit speed, cause the poor efficiency construction, influenced the problem of drilling well speed-raising.
Summary of the invention
The purpose of this utility model is at prior art problems, adopts three rigidity to set upright, and increases to set upright effect, reduces the mode of deflection, provide a kind of can reduce to slide adjust, make the stable four-in-one drilling tool structure that has three centralizers of wellbore trace.
The utility model is achieved in that the utility model comprises drill bit, stabilizer and drilling assembly, is characterized in that: described stabilizer comprises single curved screw rod stabilizer 2, stabilizer 5 and tail end stabilizer 7; Drilling assembly comprise drill bit 1, single curved screw rod 3, stub boring very 4, stabilizer 5, no magnetic drilling rod 6 and tail end stabilizer 7, single curved screw rod 3 is provided with single curved screw rod stabilizer 2, stabilizer 5 be arranged on stub boring very 4 with no magnetic drilling rod 6 between, at the upper end of no magnetic drilling rod 6 connection tail end stabilizer 7;
The external diameter of the external diameter＜tail end stabilizer 7 of the external diameter＜stabilizer 5 of the curved screw rod stabilizer 2 of described list, the scope of successively decreasing successively is 1～2mm;
The camber of the curved screw rod 3 of described list is 1 °～1.25 °;
Have directional bond on the described stabilizer 5;
Described stub boring quickly 4 length is 1～3 meter;
The external diameter of described stabilizer 5 is Φ 210mm～Φ 212mm;
The external diameter of described tail end stabilizer 7 is Φ 209mm～Φ 211mm;
Described drill bit 1 is the PDC drill bit;
The external diameter of described non magnetic drill collar 6 is 165mm, and length is 8～9.5m;
The curved screw rod stabilizer 2 of described list is made of three road scrolls,
Described stabilizer 5 also can adopt top can connect the conventional stabilisers of the directed straight joint that has keyway;
The external diameter of the external diameter＜tail end stabilizer 7 of the external diameter＜stabilizer 5 of single curved screw rod stabilizer 2, the scope of successively decreasing successively is 1～2mm;
The curved screw rod 3 of list, stub boring that when the utility model makes up, connect drill bit 1 from down to up successively before going into the well, has single curved screw rod stabilizer 2 quickly 4, stabilizer 5, non magnetic drill collar 6, tail end stabilizer 7; Drill bit 1, single curved screw rod 3, stub boring are quickly 4, stabilizer 5, non magnetic drill collar 6, tail end stabilizer 7 interconnect by screw thread; Single curved screw rod stabilizer 2 is to be evenly distributed on the surface of single curved screw rod 3 along single external diameter of bending screw rod 3, has directional bond on the stabilizer 5;
Advantage of the present utility model and beneficial effect are:
The utility model has been gathered tower drilling tool, three stabilizer drilling tool structures, downhole motor, can satisfy slides creeps into compound and creeps into two kinds of drilling modes, when the enforcement slip is crept into, the stabilizer that has guide slot that is provided with has the drilling ability in guidance capability, hold angle and steady orientation, therefore can satisfy the well straightening of straight well section, cluster well with boring around barrier, directional inclination, and the demand adjusted of track; Adopt compound when creeping into mode, has fabulous anti-oblique effect in the straight well section, has the steady azimuthal capability of good hold angle at lower curved section, be lowered to that this drilling tool promptly just can satisfy straight well and directional well two leaves to the wellbore construction task of the whole well sections of finishing drilling, thereby realize that two open to driller's journey of finishing drilling, significantly reduce the number of times that makes a trip, shortened drilling period; The PDC drill bit, the single bended screwdrill that are provided with can be realized efficient rock-breaking, creep into fast, therefore have higher rate of penetration; Particularly this drilling tool is when compound creeping into, and has good hold angle and steady azimuthal capability, makes that the directional well long well section is compound to creep into accomplished and guarantee.Soak time has been shortened in the raising of rate of penetration, has reduced anti-collapse difficulty, has improved the electrical measurement one-time success rate, has shortened well construction period.
Description of drawings
Fig. 1 is a connection diagram of the present utility model.
The specific embodiment
Provide embodiment of the present utility model below in conjunction with accompanying drawing:
Before implementing drilling well, connect following drilling tool earlier in the following order from down to up successively: the list of drill bit 1, the single curved screw rod stabilizer 2 of band bend screw rod 3, stub boring quickly 4, stabilizer 5, non magnetic drill collar 6, tail end stabilizer 7; In the drilling assembly that connects, the external diameter of the external diameter＜tail end stabilizer 7 of the external diameter＜stabilizer 5 of single curved screw rod stabilizer 2, the scope of successively decreasing successively is 1～2mm; With the drilling tool G.I.H, behind the arrival shaft bottom, can adopt the mode of creeping into of sliding to implement drilling engineering after connection finishes, also can adopt compound the creeping into of rotating disk, two kinds of power modes of screw rod according to drilling design;
Embodiment
1. drilling assembly specification:
Stub boring quickly 4 select length be 3m stub boring very, the external diameter 〉=212mm of single curved screw rod stabilizer 2, the external diameter of tail end stabilizer 7 is than the little 1.5mm of external diameter of stabilizer 5;
2. drilling assembly TRAJECTORY CONTROL main points:
According to test of many times, the utility model is 1～3 °/100m at the rate of increase of angle of the layer position, river, Lip river in long celebrating zone, and the hold angle ability of understratum, layer position, river, Lip river is-2.5 °～1 °/100m, and the whole rule of bearing swing is that float on a left side; Therefore use the utility model when the drilling well of layer position, river, Lip river, the orientation needs leading 6～9 °, goes out 3-5 ° in advance of hole deviation behind the layer position, river, Lip river;
3. section mentality of designing:
Under the situation of well track anti-collision permission, can improve kickoff point (KOP), through experimental results show that as far as possible, kickoff point (KOP) is opened well depth position the best of 30～100m afterwards two, maximum hole deviation is controlled at below 15 degree, and when implementing the drilling well of extended reach well, maximum hole deviation is controlled at 20 degree for best;
4. section control:
Before wellbore construction, to carry out the track budget to full well section, budget should refine to each stratum, aspect section control, parameter will be controlled at reaching the standard grade of design parameters, the well section will leave hole deviation more than needed on top, the lower well section could rely on the drilling tool self characteristics to edge down, and finally reaches to reduce the purpose of sliding;
5. the fine setting in the drilling process:
Require in implementing the process of drilling well that continuously-directional puts in place, budget in time, in time revise, reduce full well section and slide, understand the variation on stratum, utilize the formation variation characteristic, fine setting in time reduces the bottom and slides, and improves full well construction efficient;
6. mud property requires:
Because the architectural characteristic of the PDC drill bit that adopts in the utility model contacts the effect with strong fulcrum with the rigidity of singly bending screw rod centralizer 2 and stabilizer 5, tail end stabilizer 7 with the borehole wall; so on local stratum, when local well section is slided the adjustment well track; sticking phenomenon can appear; cause track to slide and adjust difficulty; therefore; aspect drilling fluid, need good inhibition, take sand, greasy property; in drilling process, in time improve lubricity; reduce slip resistance, drilling fluid should have clearly, only, sliding range estimation performance.
7. the selection of drilling parameter:
When creeping into, slip, recommends pump pressure lift-off value 1～2MPa according to the grasp of site operation to untwist angle; Screw rod is compound recommends the pump pressure 2.5～3.5MPa that raises when creeping into; Rotary speed is from 60～90 rev/mins, sprains when jumping the stratum running into, and suitably reduce rotary speed and the pressure of the drill;
Because kickoff point (KOP) design is higher, when well is shallow, consider the rigidity of drilling tool, counter the turning round of drilling tool is 20～30 degree, and Changing Pattern is stable, so dropout value fully on orientation parameter is selected creeps into fast;
8. the adjustment of bottom trace:
(1) in the big deep-well of hole deviation, if untwist angle is not sure, can adopt the mode of creeping into of sliding to finish creeping into of a drilling rod earlier, adopt the mode of rotating disk and helicoid hydraulic motor combined drilling to finish creeping into of two drilling rods then, according to deviational survey correction untwist angle as a result, the drilling mode that adopting then slides continuously creeps into creeps into 2～3 and adjusts again; If the hole deviation degree is less, the down-hole is unimpeded, and the hole deviation degree that can get 60～90 ° earlier creeps into; If find to have the phenomenon that is hampered below 5 tons in the drilling well, untwist angle is got 100～130 ° and is advisable;
(2) abundant up and down movable drilling tool before the deviational survey guarantees that measured data are accurate;
Hold up brill according to upright variation of pressing when (3) adjusting, the upright pressure of close observation changes when creeping into, and pump pressure rising 1MPa in pressurization back is the foundation that can creep into.
The drilling well example:
Long celebrating area plug 391-14 well construction example:
Design data: 2152.70 meters of well depths, 815.76 meters of displacements, orientation 256.52 degree, 1910 meters of the vertical depths of hitting, 1951 meters of finishing drilling vertical depths, 230 meters of design kickoff point (KOP)s;
Two spud in tool combinations: from bottom to top, PDC drill bit 1+ diameter is that 172mm, camber are that single bended screwdrill 3+ diameter of 1.25 ° is that 165mm, length are that to endure the 4+ diameter be that the stabilizer 5+ diameter of 212mm is that the non magnetic drill collar 6+ diameter of 165mm is that the tail end centralizer 7+ diameter of 212mm is that the 11+diameter of drill collar of 165mm is that drilling rod+diameter of 127mm is the kelly bar of 133mm for the stub boring of 1.6m; 172mm diameter, camber are that single bended screwdrill 3 of 1.25 ° is provided with single curved screw rod stabilizer 2;
Drilling parameter: the pressure of the drill 20～80KN, rotating speed 70rpm, discharge capacity 36L/S;
The TRAJECTORY CONTROL of this well drilling process, because the use of the four-in-one drilling tool structure that has three centralizers that is provided with makes the wellbore construction section smooth, TRAJECTORY CONTROL is fine; This well drilling period 5 days 01 hours, the speed 9390.18m/ platform moon rig moon, two open after, do not occur sliding and adjusting, and the problem that makes a trip repeatedly, realized that two open the purpose of boring finishing drilling for a time, demonstrated fully the four-in-one drilling tool structure that has three centralizers and had superiority aspect the extended reach well TRAJECTORY CONTROL.
Claims (8)
1. a four-in-one drilling tool structure that has three centralizers comprises drill bit, stabilizer and drilling assembly, it is characterized in that: described stabilizer comprises single curved screw rod stabilizer, stabilizer and tail end stabilizer; Drilling assembly comprise drill bit, single curved screw rod, stub boring very, stabilizer, no magnetic drilling rod and tail end stabilizer, stabilizer is arranged on stub boring very and between the no magnetic drilling rod, at the upper end of no magnetic drilling rod connection tail end stabilizer.
2. the four-in-one drilling tool structure that has three centralizers according to claim 1, it is characterized in that: the camber of the curved screw rod of described list is 1 °～1.25 °, the curved screw rod of described list is provided with single curved screw rod stabilizer, and single curved screw rod stabilizer is made of three road scrolls.
3. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: have directional bond on the described stabilizer.
4. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: described stub boring length quickly is 1～3 meter.
5. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: the external diameter of described stabilizer is Φ 210mm～Φ 212mm.
6. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: the external diameter of described tail end stabilizer is Φ 209mm～Φ 211mm.
7. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: the external diameter of described non magnetic drill collar is 165mm, and length is 8～9.5m.
8. the four-in-one drilling tool structure that has three centralizers according to claim 1 is characterized in that: the external diameter of the external diameter＜tail end stabilizer of the external diameter＜stabilizer of the curved screw rod stabilizer of described list, the scope of successively decreasing successively is 1～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202436715U CN201554370U (en) | 2009-12-02 | 2009-12-02 | Four-in-one drilling tool structure with three centering devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202436715U CN201554370U (en) | 2009-12-02 | 2009-12-02 | Four-in-one drilling tool structure with three centering devices |
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| Publication Number | Publication Date |
|---|---|
| CN201554370U true CN201554370U (en) | 2010-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202436715U Expired - Fee Related CN201554370U (en) | 2009-12-02 | 2009-12-02 | Four-in-one drilling tool structure with three centering devices |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735896A (en) * | 2016-02-02 | 2016-07-06 | 中铁隧道集团一处有限公司 | Method for conducting ultra-deep horizontal hole drilling by means of centering device set |
| CN105781442A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Automatic locating mechanism for downhole drill pillar |
| CN112081528A (en) * | 2020-09-30 | 2020-12-15 | 中国石油天然气集团有限公司 | Horizontal section efficient support-free oscillating drilling tool combination and method |
-
2009
- 2009-12-02 CN CN2009202436715U patent/CN201554370U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105735896A (en) * | 2016-02-02 | 2016-07-06 | 中铁隧道集团一处有限公司 | Method for conducting ultra-deep horizontal hole drilling by means of centering device set |
| CN105781442A (en) * | 2016-03-11 | 2016-07-20 | 柳超 | Automatic locating mechanism for downhole drill pillar |
| CN112081528A (en) * | 2020-09-30 | 2020-12-15 | 中国石油天然气集团有限公司 | Horizontal section efficient support-free oscillating drilling tool combination and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20181202 |