CN101701506A - Drilling tool structure with three stabilizers - Google Patents
Drilling tool structure with three stabilizers Download PDFInfo
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- CN101701506A CN101701506A CN200910216475A CN200910216475A CN101701506A CN 101701506 A CN101701506 A CN 101701506A CN 200910216475 A CN200910216475 A CN 200910216475A CN 200910216475 A CN200910216475 A CN 200910216475A CN 101701506 A CN101701506 A CN 101701506A
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Abstract
The invention relates to a drilling tool structure with three stabilizers, in particular to a drilling tool structure of a drilling well, comprising a single bent screw stabilizer, a stabilizer, a tail-end stabilizer, a drill bit, a single bent screw, a short drill collar and a non-magnetic drill stem, wherein the stabilizer is arranged between the short drill collar and the non-magnetic drill stem; and the upper end of the non-magnetic drill stem is connected with the tail-end stabilizer. The invention provides a four-in-one drilling tool structure with three centralizers in such a way of enhancing the centralizing effect and reducing the deflection, solves the problem that the well deflection is increased along with the obliquity of a stratum because the upper part of the traditional drilling tool assembly is lack of a stabilizing mechanism, meets the requirement of well drilling construction tasks of drilling second sections to well drilling all well sections for a straight well and a directional well and has higher mechanical drilling rate.
Description
Technical field
A kind of drilling tool structure that has three stabilizers the present invention 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 objective of the invention is at prior art problems, adopt three rigidity to set upright, increase and to set upright effect, reduce the mode of deflection, provide a kind of can reduce to slide adjust, make the stable drilling tool structure that has three stabilizers of wellbore trace.
The present invention realizes like this, the present invention includes stabilizer and drilling assembly, it is characterized in that: described stabilizer comprises single curved screw rod stabilizer, stabilizer and tail end stabilizer, and the camber of single curved screw rod is 1 °～1.25 °, has directional bond on stabilizer and tail end stabilizer; Drilling assembly comprises that single curved screw rod, stub boring are endured, no magnetic drilling rod, and stub boring length quickly is 1～3 meter, very and between the no magnetic drilling rod is connected with stabilizer at stub boring, and single curved screw rod is provided with single screw rod stabilizer of bending, and connects the tail end stabilizer in the rear end of no magnetic drilling rod;
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 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;
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 curved screw rod 3 of list, stub boring that when the present invention 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;
Of the present invention a bit and beneficial effect be:
The present invention has 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 invention.
The specific embodiment
Provide embodiments of the invention 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 present invention 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 present invention 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 among the present invention 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 (5)
1. drilling tool structure that has three stabilizers, comprise stabilizer and drilling assembly, it is characterized in that: described stabilizer comprises single curved screw rod stabilizer, stabilizer and tail end stabilizer, and the camber of single curved screw rod is 1 °～1.25 °, has directional bond on stabilizer and tail end stabilizer; Drilling assembly comprises that single curved screw rod, stub boring are endured, no magnetic drilling rod, and stub boring length quickly is 1～3 meter, very and between the no magnetic drilling rod is connected with stabilizer at stub boring, and single curved screw rod is provided with single screw rod stabilizer of bending, and connects the tail end stabilizer in the rear end of no magnetic drilling rod.
2. the drilling tool structure that has three stabilizers according to claim 1 is characterized in that: the curved screw rod stabilizer of described list is made of three road scrolls.
3. the drilling tool structure that has three stabilizers 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.
4. the drilling tool structure that has three stabilizers according to claim 1 is characterized in that: the external diameter of described stabilizer is Ф 210mm～Ф 212mm, and the external diameter of described tail end stabilizer is Ф 209mm～Ф 211mm.
5. the drilling tool structure that has three stabilizers 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.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910216475A CN101701506A (en) | 2009-12-02 | 2009-12-02 | Drilling tool structure with three stabilizers |
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| CN200910216475A CN101701506A (en) | 2009-12-02 | 2009-12-02 | Drilling tool structure with three stabilizers |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134965A (en) * | 2011-01-25 | 2011-07-27 | 煤炭科学研究总院西安研究院 | Long positioned drill hole drilling tool for extracting gas from coal seam roof and construction method thereof |
| CN102278066A (en) * | 2011-07-18 | 2011-12-14 | 上海大学 | Anti-deflection and fast drilling bottom drilling tool combination for composite drilling |
| CN102305021A (en) * | 2011-08-04 | 2012-01-04 | 西南石油大学 | Experimental method for simulating dynamic mechanics characteristic of underground drilling rig of air well drilling |
| CN102322229A (en) * | 2011-06-23 | 2012-01-18 | 北京市三一重机有限公司 | Righting mechanism, drilling rod structure and engineering machine using same |
| CN104775758A (en) * | 2015-05-05 | 2015-07-15 | 德州联合石油机械有限公司 | Angle holding screw drilling tool for extended-reach directional well |
| CN105332660A (en) * | 2014-08-13 | 2016-02-17 | 盐城市华谊石油机械有限公司 | Scraping and centralizing stabilizer |
| CN111395975A (en) * | 2020-04-16 | 2020-07-10 | 中国石油天然气集团有限公司 | Two-opening one-trip drilling tool combination suitable for construction of oil well horizontal well and construction method thereof |
-
2009
- 2009-12-02 CN CN200910216475A patent/CN101701506A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102134965A (en) * | 2011-01-25 | 2011-07-27 | 煤炭科学研究总院西安研究院 | Long positioned drill hole drilling tool for extracting gas from coal seam roof and construction method thereof |
| CN102322229A (en) * | 2011-06-23 | 2012-01-18 | 北京市三一重机有限公司 | Righting mechanism, drilling rod structure and engineering machine using same |
| CN102278066A (en) * | 2011-07-18 | 2011-12-14 | 上海大学 | Anti-deflection and fast drilling bottom drilling tool combination for composite drilling |
| CN102305021A (en) * | 2011-08-04 | 2012-01-04 | 西南石油大学 | Experimental method for simulating dynamic mechanics characteristic of underground drilling rig of air well drilling |
| CN102305021B (en) * | 2011-08-04 | 2013-04-10 | 西南石油大学 | Experimental method for simulating dynamic mechanics characteristic of underground drilling rig of air well drilling |
| CN105332660A (en) * | 2014-08-13 | 2016-02-17 | 盐城市华谊石油机械有限公司 | Scraping and centralizing stabilizer |
| CN105332660B (en) * | 2014-08-13 | 2019-02-05 | 盐城市华谊石油机械有限公司 | A kind of scraping righting stabilizer |
| CN104775758A (en) * | 2015-05-05 | 2015-07-15 | 德州联合石油机械有限公司 | Angle holding screw drilling tool for extended-reach directional well |
| CN111395975A (en) * | 2020-04-16 | 2020-07-10 | 中国石油天然气集团有限公司 | Two-opening one-trip drilling tool combination suitable for construction of oil well horizontal well and construction method thereof |
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Application publication date: 20100505 |