CN104929528A - Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit - Google Patents
Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit Download PDFInfo
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- CN104929528A CN104929528A CN201510217862.4A CN201510217862A CN104929528A CN 104929528 A CN104929528 A CN 104929528A CN 201510217862 A CN201510217862 A CN 201510217862A CN 104929528 A CN104929528 A CN 104929528A
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Abstract
The invention discloses a novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit, comprising a PDC part, a tri-cone part and a hydraulic bearing piston cylinder. The tri-cone part is higher than the PDC part. The hydraulic bearing piston cylinder is mounted at the bottom of a junction of the PDC part and the tri-cone part. The hydraulic bearing piston cylinder is connected with three oil circuits; an outlet of each oil circuit is sealed with a check valve; the hydraulic bearing piston cylinder is filled with hydraulic oil under preset pressure. The tri-cone part higher than the PDC part can protect teeth of the PDC part from cracking; a piston slowly retracts during the bit being stressed, the PDC part is stressed first, and collaborative rock breaking is achieved; advantages in both PDC rock-breaking and cone bit rock-breaking are fully combined, the drilling speed is high, a tool face is stable and durable and has great footage, hydraulic oils with different hydraulic valves can be charged according to different formations so as to form individual bits for such formations.
Description
Technical field
The invention belongs to drilling bit field, particularly relate to a kind of novel hydraulic pressure movable teeth hand held gear wheel with PDC in conjunction with drill bit.
Background technology
Tricone bit is from external introduction the earliest, is divided into mill teeth, inserted according to tooth; Rubber seal, steel sealing etc. is divided into according to sealing.Its shortcoming is:
(1) the pressure of the drill is large, slow during brill; (2) easy lost cone, tooth etc., cause down-hole accident; (3) effective time is shorter.
PDC drill bit is the drill bit that situ of drilling well is conventional, is divided into synthetic diamond core bit, natural diamond bit etc.Its shortcoming is:
(1) PDC soft or hard interlock stratum casing programme be not easy control; (2) the pressure of the drill increases suddenly easy the sound of sth. throbbing or bursting tooth when turning round by force; (3) hole anomaly come outbreak out, other instruments of down-hole not easily pass through, and need drifting; (4) during the use such as directed drilling, horizontal drilling PDC, tool-face is unstable, and casing programme is not easy to control.
The drill bit that PDC and rock bit combine occurs very early abroad, the Chimaera series drill bit of such as Bake Hughes, namely during high brill have the advantages that PDC and tricone bit combine, casing programme and the high stability of tool-face, low the pressure of the drill, use high-durability, high stock-removing efficiency etc.
The relevant development of China is also in slow starting, and its Major Difficulties is just the uniformity of three cone portion rock cuttings and PDC part rock cutting.If the cooperation between them is not handled well just there will be following situation: (1) is if PDC part rock cutting is many, and three cone portion effectively can not bear the pressure of the drill, can make hilted broadsword wing PDC premature breakdown, lose original advantage, slack-off during brill; (2) if tricone bit cuts many, because gear wheel breaks the restriction of rock principle, rock bit efficiency of breaking rock is slow, therefore slack-off when boring.Coordinate at PDC and three gear wheels, be easy to the situation occurring that a small discrepancy leads to a great error.
Summary of the invention
The object of the present invention is to provide a kind of novel hydraulic pressure movable teeth hand held gear wheel with PDC in conjunction with drill bit, be intended to solve drill bit that existing PDC and rock bit combine and can not make that PDC breaks rock, rock bit is broken rock dominating part and fully combined, tool-face is stable unstable, can not make the problem of individual character drill bit according to Different Strata.
The present invention is achieved in that a kind of novel hydraulic pressure movable teeth hand held gear wheel comprises PDC and three gear wheel bound fractions, hydraulic pressure pressure-bearing piston cylinder with PDC in conjunction with drill bit; Comparatively PDC part is outstanding for three cone portion in described PDC and three gear wheel bound fractions, described hydraulic pressure pressure-bearing piston cylinder is arranged on the bottom of described PDC and three gear wheel bound fractions, this hydraulic pressure pressure-bearing piston Gang You tri-road oil circuit connects together, seal at the outlet ball-and-seat of oil circuit, inside hydraulic pressure pressure-bearing piston cylinder, be filled with the hydraulic oil of scheduled pressure value, below each pinch roller of three gear wheels, one oil circuit is set.
Further, inside described hydraulic pressure pressure-bearing piston cylinder, the hydraulic pressure value of preliminary filling determines according to the empirical value of local wellbore construction section, and the hydraulic pressure value of the larger preliminary filling of formation hardness is larger.
The present invention changes original bit force structure, makes that PDC breaks rock, rock bit is broken rock dominating part and fully combined, fast during brill, tool-face stable, durable, drilling depth large, and can make the individual character drill bit that be applicable to this stratum according to stratum difference.
Accompanying drawing explanation
Fig. 1 is the novel hydraulic pressure movable teeth hand held gear wheel that provides of the embodiment of the present invention and the structural representation of PDC in conjunction with drill bit;
In figure: 1, PDC and three gear wheel bound fractions; 2, hydraulic pressure pressure-bearing piston cylinder.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with embodiment, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Below in conjunction with drawings and the specific embodiments, application principle of the present invention is further described.
Refer to Fig. 1:
The present invention is achieved in that a kind of novel hydraulic pressure movable teeth hand held gear wheel comprises PDC and three gear wheel bound fractions 1, hydraulic pressure pressure-bearing piston cylinder 2 with PDC in conjunction with drill bit; Comparatively PDC part is outstanding for three cone portion in described PDC and three gear wheel bound fractions 1, described hydraulic pressure pressure-bearing piston 2 cylinder is arranged on the bottom of described PDC and three gear wheel bound fractions 1, this hydraulic pressure pressure-bearing piston cylinder 2 is connected together by three road oil circuits, seal at the outlet ball-and-seat of oil circuit, inside hydraulic pressure pressure-bearing piston cylinder, be filled with the hydraulic oil of scheduled pressure value, below each pinch roller of three gear wheels, one oil circuit is set.
Further, inside described hydraulic pressure pressure-bearing piston cylinder 2, the hydraulic pressure value of preliminary filling determines according to the empirical value of local wellbore construction section, and the hydraulic pressure value of the larger preliminary filling of formation hardness is larger.
Comparatively PDC part is outstanding for three cone portion, and drill bit contacts three cone portion at first in pressure-bearing process, PDC part tooth can be protected to increase suddenly the pressure of the drill and turn round and the sound of sth. throbbing or bursting tooth by force;
Hydraulic pressure pressure-bearing piston cylinder 2 has certain movement travel, and in drill bit pressure-bearing process, piston slowly shrinks, and certain piston stroke and hydraulic oil are supplemented with money in advance and can be prevented three cone portion hypersystoles.Then, PDC part starts pressure-bearing, reaches the object of collaborative broken rock; Three cone portion are by rock stratum pressure pine, and pine part is swept away by PDC part, because chip stratum is even, directional drilling, the tool-face of horizontal drilling, casing programme can be made to be easy to control.
And hydraulic pressure pressure-bearing piston cylinder 2 preliminary filling hydraulic pressure value is relevant with the empirical value of wellbore construction section, if stratum is comparatively hard, pressurising is just large, and three cone portion take on the Po Yan main force, how much can adapt to stratum according to preliminary filling hydraulic pressure value;
The present invention changes original bit force structure, makes that PDC breaks rock, rock bit is broken rock dominating part and fully combined, fast during brill, tool-face stable, durable, drilling depth large, and can make the individual character drill bit that be applicable to this stratum according to stratum difference.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (2)
1. novel hydraulic pressure movable teeth hand held gear wheel, is characterized in that in conjunction with a drill bit with PDC, and described novel hydraulic pressure movable teeth hand held gear wheel comprises PDC and three gear wheel bound fractions, hydraulic pressure pressure-bearing piston cylinder with PDC in conjunction with drill bit; Comparatively PDC part is outstanding for three cone portion in described PDC and three gear wheel bound fractions, described hydraulic pressure pressure-bearing piston cylinder is arranged on the bottom of described PDC and three gear wheel bound fractions, this hydraulic pressure pressure-bearing piston Gang You tri-road oil circuit connects together, seal at the outlet ball-and-seat of oil circuit, inside hydraulic pressure pressure-bearing piston cylinder, be filled with the hydraulic oil of scheduled pressure value, below each pinch roller of three gear wheels, one oil circuit is set.
2. hydraulic pressure movable teeth hand held gear wheel novel as claimed in claim 1 with PDC in conjunction with drill bit, it is characterized in that, inside described hydraulic pressure pressure-bearing piston cylinder, the hydraulic pressure value of preliminary filling determines according to the empirical value of local wellbore construction section, and the hydraulic pressure value of the larger preliminary filling of formation hardness is larger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217862.4A CN104929528A (en) | 2015-04-30 | 2015-04-30 | Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217862.4A CN104929528A (en) | 2015-04-30 | 2015-04-30 | Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104929528A true CN104929528A (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217862.4A Pending CN104929528A (en) | 2015-04-30 | 2015-04-30 | Novel hydraulic moving palm cone and PDC (polycrystalline diamond compact) compound bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104929528A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649536A (en) * | 2016-04-08 | 2016-06-08 | 西南石油大学 | Active rotary telescopic compound bit applicable to deep difficult-to-drill hard formation |
| CN113202415A (en) * | 2021-05-31 | 2021-08-03 | 中石化江钻石油机械有限公司 | Mixed drill bit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2426990A (en) * | 2004-09-10 | 2006-12-13 | Smith International | Two cone drill bit with spacers and nozzles |
| CN102561953A (en) * | 2012-01-18 | 2012-07-11 | 西南石油大学 | Self-adapting hybrid bit |
| CN102747960A (en) * | 2012-07-11 | 2012-10-24 | 江汉石油钻头股份有限公司 | Hybrid drill bit |
| CN103527097A (en) * | 2013-10-12 | 2014-01-22 | 中国石油大学(北京) | Active-adjusting type composite drill bit |
| CN103939022A (en) * | 2014-04-10 | 2014-07-23 | 河北驰恒钻头制造有限公司 | Combined drill bit combining PDC drill bit and roller bit for joint rock breaking |
-
2015
- 2015-04-30 CN CN201510217862.4A patent/CN104929528A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2426990A (en) * | 2004-09-10 | 2006-12-13 | Smith International | Two cone drill bit with spacers and nozzles |
| CN102561953A (en) * | 2012-01-18 | 2012-07-11 | 西南石油大学 | Self-adapting hybrid bit |
| CN102747960A (en) * | 2012-07-11 | 2012-10-24 | 江汉石油钻头股份有限公司 | Hybrid drill bit |
| CN103527097A (en) * | 2013-10-12 | 2014-01-22 | 中国石油大学(北京) | Active-adjusting type composite drill bit |
| CN103939022A (en) * | 2014-04-10 | 2014-07-23 | 河北驰恒钻头制造有限公司 | Combined drill bit combining PDC drill bit and roller bit for joint rock breaking |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105649536A (en) * | 2016-04-08 | 2016-06-08 | 西南石油大学 | Active rotary telescopic compound bit applicable to deep difficult-to-drill hard formation |
| CN113202415A (en) * | 2021-05-31 | 2021-08-03 | 中石化江钻石油机械有限公司 | Mixed drill bit |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150923 |
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| RJ01 | Rejection of invention patent application after publication |