CN205382876U - Broken rock device in eccentric two rank - Google Patents
Broken rock device in eccentric two rank Download PDFInfo
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- CN205382876U CN205382876U CN201521111945.7U CN201521111945U CN205382876U CN 205382876 U CN205382876 U CN 205382876U CN 201521111945 U CN201521111945 U CN 201521111945U CN 205382876 U CN205382876 U CN 205382876U
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- drill bit
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- broken rock
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- transmission shaft
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Abstract
The utility model provides a broken rock device in eccentric two rank, it is main including shell body, positive displacement power assembly, transmission shaft, lower clutch and first -order drill bit, wherein: the shell body still includes to be connected with the second order drill bit, the lower clutch is located inside the second order drill bit, the center pin and the coincidence of first -order drill bit center pin of positive displacement power assembly, transmission shaft, shell body and the coincidence of second order drill bit center pin, first -order drill bit center pin and second order drill bit center pin do not coincide. The device installs between bottom hole assembly and drill bit, can provide high rotational speed and big moment of torsion for the broken rock of drill bit, can drill out the notch cuttype well again, reduces the broken rock degree of difficulty of given size drill bit, and the broken rock mode of more conventional single -order can effectively improve rock breaking efficiency, reduces well drilling comprehensive cost, can make the first -order drill bit produce rotation and revolution simultaneously, thoroughly solve the problem of the low broken rock energy shortage of conventional single -order center line of bit speed, can obtain bigger cutting output, it is more stable also to enable the drilling tool combination, is favorable to controlling the well quality.
Description
Technical field
This utility model relates to the drilling tool field in oil and gas well drilling, CBM Drilling field, the broken rock device in especially a kind of eccentric double; two rank.
Background technology
Increase along with oil/gas drilling well depth, harder being difficult to crushes in rock stratum, having had a strong impact on the raising of rate of penetration, the reduction of drilling speed has become as the technical bottleneck of restriction China deep-seated oil gas reservoir Efficient Development, and existing conventional rock-breaking and well-drilling technology can not meet the technological requirement putting forward effect.PDC drill bit has the advantage being better than other drill bits and is widely applied, but big size hole drilling speed is slow, high abrasive stratum bit wear is serious, large scale or high-performance drill bit is expensive, the low broken rock energy of bit central linear velocity is not enough, also being the subject matter that faces of PDC drill bit, New well drilling technology such as laser drill, drilling by use of heat, particle punching drilling can't carry out on-the-spot application.
Utility model content
The purpose of this utility model is for prior art Problems existing, a kind of simple in construction is provided for oil and gas well drilling, CBM Drilling, geological prospecting, mine probing, dependable performance, control accuracy is high, the easy to operate broken rock device in eccentric double; two rank, to improve the rock breaking capacity of solid rock, high abrasive rock further, the rate of penetration of design well is greatly improved.
This utility model solves its technical problem and be the technical scheme is that
The broken rock device in eccentric double; two rank, master includes shell body 1, positive displacement power assembly 2, power transmission shaft 5, lower contact 7 and single order drill bit 8；The processing by-pass prot 4 of power transmission shaft 5 top, power transmission shaft 5 bottom is connected with lower contact 7, and positive displacement power assembly 2, by-pass prot 4, power transmission shaft 5 are installed in shell body 1 inside, and lower contact 7 is positioned at shell body bottom, lower contact 7 is connected with single order drill bit 8, it is characterised in that: also include second order drill bit 9；Shell body 1 is connected with second order drill bit 9；It is internal that lower contact 7 is positioned at second order drill bit 9；Positive displacement power assembly 2, power transmission shaft 5 central shaft overlap with single order bit central axle 13, shell body 1 overlaps with second order drill bit 9 central shaft 12, and single order bit central axle 13 and second order bit central axle 12 are misaligned.
Such scheme farther includes:
Shaft coupling 3 is installed between positive displacement power assembly 2 and power transmission shaft 5, is provided externally with regulator 6 at shell body 1.
Regulator 6 is spiral stabilizer or the one of straightedge type regulator, idler wheel stabilizer.
Single order drill bit 8 bottom surface protrudes from second order drill bit 9 bottom surface.
The broken rock device in the double; two rank of bias of the present utility model had both had the raising drilling speed of double; two rank broken rock device of broken rock of concentric structure, and it is little to solve single order bit central linear velocity, the problem limiting single order drill bit efficiency of breaking rock；Give full play to the advantage of prior art equipment, break foreign technology monopolization, play the technical advantage of double; two rank drilling technology, improve bit speed, reduce drilling well integrated cost, shorten the construction operation cycle, meet the technological requirement of deep-seated oil gas reservoir Efficient Development drilling well, the broken rock technique in double; two rank can effectively reduce the broken rock difficulty of drill bit used by design well, improves the efficiency of well drilling and rock crushing further；Meanwhile, the broken rock device in eccentric double; two rank also has that structural design is simple, dependable performance, easy to operate feature.
Field practice proves, utilizes the broken rock device drilling well in eccentric double; two rank, on average improves drilling efficiency 56.7%, save drilling period 5-8 days, and drilling quality meets design standard, it is achieved that low energy consumption, high efficiency drilling well purpose.
Accompanying drawing explanation
Fig. 1 is based on the broken rock apparatus structure schematic diagram in eccentric double; two rank that this utility model is proposed.
Fig. 2 is based on single order drill bit and the second order drill bit combination schematic diagram of the proposed broken rock device in eccentric double; two rank of this utility model.
Fig. 3 is based on single order drill bit and second order drill bit movement locus schematic diagram in the wellbore in the broken rock device in eccentric double; two rank that this utility model is proposed.
1-shell body, 2-positive displacement power assembly, 3-shaft coupling, 4-by-pass prot, 5-power transmission shaft, 6-regulator, 7-lower contact, 8-single order drill bit, 9-second order drill bit, 10-single order drill bit movement track, 11-second order drill bit movement track, 12-second order bit central axle, 13-single order bit central axle in figure.
Detailed description of the invention
This utility model is described in detail below in conjunction with accompanying drawing.
With reference to Fig. 1, the broken rock device in eccentric double; two rank, master includes shell body 1, positive displacement power assembly 2, power transmission shaft 5, lower contact 7 and single order drill bit 8；The processing by-pass prot 4 of power transmission shaft 5 top, power transmission shaft 5 bottom is connected with lower contact 7, and positive displacement power assembly 2, by-pass prot 4, power transmission shaft 5 are installed in shell body 1 inside, and lower contact 7 is positioned at shell body bottom, lower contact 7 is connected with single order drill bit 8, and it is distinguished by: also include second order drill bit 9；Shell body 1 is connected with second order drill bit 9；It is internal that lower contact 7 is positioned at second order drill bit 9；Positive displacement power assembly 2, power transmission shaft 5 central shaft overlap with single order bit central axle 13, shell body 1 overlaps with second order drill bit 9 central shaft 12, and single order bit central axle 13 and second order bit central axle 12 are misaligned.
Above-described embodiment farther includes:
Shaft coupling 3 is installed between positive displacement power assembly 2 and power transmission shaft 5, is provided externally with regulator 6 at shell body 1.
Regulator 6 is spiral stabilizer or the one of straightedge type regulator, idler wheel stabilizer.
Single order drill bit 8 bottom surface protrudes from second order drill bit 9 bottom surface.
Working mechanism of the present utility model and effect:
During well drilling and rock crushing, after drilling fluid enters the broken rock device in eccentric double; two rank, drilling fluid drives positive displacement power assembly to start to rotate, drive axis is driven by shaft coupling, and then driving lower contact to rotate, lower contact rotates and drives single order drill bit to start the broken rock of rotation, and drilling fluid is after positive displacement power assembly, enter inside power transmission shaft through by-pass prot, be then passed through single order drill bit and arrive shaft bottom；The driving torque of ground rotating disk is transferred to the broken rock crust of the device body in eccentric double; two rank by drill string and arrives second order drill bit simultaneously, drives second order drill bit to rotate broken rock.Single order drill bit is while rotating brokenly rock around its central axis, rotate around second order bit central axle also with the rotation of second order drill bit, thus creating rotation and revolution two states, owing to single order bit central axle and second-order central axle are off structure, allow for the high linear speed region of single order drill bit through the low linear velocity region of bit central, also just overcome conventional bit and cause the deficiency that efficiency of breaking rock is low owing to center line velocity is little.The broken rock device in eccentric double, two rank is by controlling rotation formula and the compound mode of two rank drill bits, notch cuttype shaft bottom can either be got out, be conducive to rapidly and efficiently creeping into of design well, solve again the problem that the little efficiency of breaking rock of conventional bit center line velocity is low, and institute's drilling well eye better quality, stability is higher, suitable in all kinds drill bit (rifler, PDC drill bit) technology requirement, compared with conventional breaking technique for rock, when same consumption energy and drilling period, more rock can be cut, namely rate of penetration is faster, efficiency of breaking rock is higher, its economic benefit is very notable.
Claims (4)
1. the broken rock device in eccentric double; two rank, master includes shell body (1), positive displacement power assembly (2), power transmission shaft (5), lower contact (7) and single order drill bit (8)；Wherein, power transmission shaft (5) top processing by-pass prot (4), power transmission shaft (5) bottom is connected with lower contact (7), positive displacement power assembly (2), by-pass prot (4), power transmission shaft (5) are installed in shell body (1) inside, lower contact (7) is positioned at shell body bottom, lower contact (7) is connected with single order drill bit (8), it is characterised in that: also include second order drill bit (9)；Shell body (1) is connected with second order drill bit (9)；It is internal that lower contact (7) is positioned at second order drill bit (9)；Positive displacement power assembly (2), power transmission shaft (5) central shaft overlap with single order bit central axle (13), shell body (1) overlaps with second order drill bit (9) central shaft (12), and single order bit central axle (13) and second order bit central axle (12) are misaligned.
2. the broken rock device in the double; two rank of bias according to claim 1, is characterized in that: install shaft coupling (3) between positive displacement power assembly (2) and power transmission shaft (5), be provided externally with regulator (6) at shell body (1).
3. the broken rock device in the double; two rank of bias according to claim 2, is characterized in that: regulator (6) are spiral stabilizer or the one of straightedge type regulator, idler wheel stabilizer.
4., according to claim 1 or 2, the broken rock device in eccentric double; two rank described in 3, it is characterized in that: single order drill bit (8) bottom surface protrudes from second order drill bit (9) bottom surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111945.7U CN205382876U (en) | 2015-12-29 | 2015-12-29 | Broken rock device in eccentric two rank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111945.7U CN205382876U (en) | 2015-12-29 | 2015-12-29 | Broken rock device in eccentric two rank |
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| Publication Number | Publication Date |
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| CN205382876U true CN205382876U (en) | 2016-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521111945.7U Active CN205382876U (en) | 2015-12-29 | 2015-12-29 | Broken rock device in eccentric two rank |
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| CN (1) | CN205382876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930686A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Eccentric double rank broken rock devices |
-
2015
- 2015-12-29 CN CN201521111945.7U patent/CN205382876U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930686A (en) * | 2015-12-29 | 2017-07-07 | 中石化石油工程技术服务有限公司 | Eccentric double rank broken rock devices |
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