技术领域technical field
本发明涉及石油天然气钻探工程、矿山工程、建筑基础工程施工、地质钻探、隧道工程、水文及非开挖技术领域，具体涉及一种混合破岩机构和一种长寿命混合钻头。The invention relates to the fields of oil and gas drilling engineering, mining engineering, building foundation engineering construction, geological drilling, tunnel engineering, hydrology and non-excavation technology, in particular to a hybrid rock-breaking mechanism and a long-life hybrid drill bit.
背景技术Background technique
在石油天然气钻井工程中，通常使用钻头破碎岩石，钻头是破碎岩石形成井筒的破岩工具。目前钻井工程中使用的钻头主要有三牙轮钻头和PDC钻头，三牙轮钻头主要以冲击压碎的形式破岩，三牙轮钻头的轮体速比（钻头旋转钻进时牙轮转速与钻头转速之比）均大于1，钻头旋转钻进时牙轮转速快，牙轮上的牙齿对井底岩石形成冲击压碎作用破岩，能量利用率不高，破岩效率相对较低。PDC钻头依靠高硬度、耐磨、自锐的聚晶金刚石复合片（简称PDC齿）来剪切和破碎岩石，PDC钻头在软到中硬地层中机械钻速高、寿命长，钻进成本低，因此其在油气井的钻进中得到广泛使用。In oil and gas drilling engineering, drill bits are usually used to break rocks, which are rock-breaking tools that break rocks to form wellbores. At present, the drill bits used in drilling engineering mainly include three-cone bits and PDC bits. The three-cone bits mainly break rock in the form of impact crushing. The ratio of rotation speed) is greater than 1. When the bit rotates and drills, the cone rotates fast, and the teeth on the cone form an impact crushing effect on the rock at the bottom of the well. The energy utilization rate is not high, and the rock-breaking efficiency is relatively low. PDC bits rely on high-hardness, wear-resistant, self-sharpening polycrystalline diamond composites (PDC teeth for short) to shear and break rocks. PDC bits have high mechanical penetration rate, long life and low drilling cost in soft to medium hard formations. , so it is widely used in the drilling of oil and gas wells.
美国贝克休斯公司提出的牙轮—PDC混合式钻头是在传统的PDC切削结构基础上增加牙轮切削结构而形成的。当混合钻头旋转钻进时，固定刀翼上的PDC齿以刮切方式破岩，牙轮上的牙齿主要以冲击压碎的方式破岩,因此混合钻头依靠两种方式破碎岩石，它在某些特殊地层—如砾石地层，不均质地层能获得较好的效果。The cone-PDC hybrid drill bit proposed by Baker Hughes of the United States is formed by adding a cone cutting structure on the basis of the traditional PDC cutting structure. When the hybrid bit rotates and drills, the PDC teeth on the fixed blade break the rock by scraping, and the teeth on the cone mainly break the rock by impact crushing. Therefore, the hybrid bit relies on two methods to break rock. Some special formations - such as gravel formations, heterogeneous formations can get better results.
在现有的牙轮—PDC混合钻头中，牙轮体是安装在独立的牙掌上，其轴承为单支承结构，轴承的轴颈一端固接在钻头体的牙掌上，另一端为自由端，即轴颈为单端固定的悬臂梁结构，牙轮套装在牙掌的轴颈上与钻头体形成转动连接。为防止钻头工作时牙轮轴向窜动和脱落，在轴颈和牙轮体之间设置有轴向锁定装置（如滚珠锁定装置），轴向锁定装置需在轴颈和牙轮体内加工环形槽，环形槽的存在影响了轴颈和牙轮的强度和轴承耐磨能力，减短了轴承的使用寿命；其二，即使在轴承结构中设置牙轮的轴向锁定装置，仍然存在因轴向锁定装置失效而导致牙轮脱落的可能，牙轮脱落事故一旦发生，将对后续的钻井进程产生非常不利的影响；其三为了保证牙轮切削结构的强度，其牙轮的轴承结构和牙轮体本身体积太大，占据钻头宝贵的布齿空间；其四为了保证牙轮轴承的强度就需要加大轴承的尺寸，就相应降低牙轮壳体的厚度，从而容易导致牙轮壳体的开裂，牙齿的固齿强度不够等情况的发生。上述缺点的存在将严重制约混合钻头的使用；并且，目前钻头扭矩过大、减小钻头横向、轴向、扭转振动，钻头工具面不易控制，从而引发钻头蹩钻、断刀翼、振动会让切削齿提前失效等问题。In the existing cone-PDC hybrid drill bit, the cone body is installed on an independent tooth palm, and its bearing is a single support structure. One end of the journal of the bearing is fixed on the tooth palm of the drill body, and the other end is a free end. That is, the journal is a single-end fixed cantilever beam structure, and the cone is set on the journal of the tooth palm to form a rotational connection with the drill body. In order to prevent the cone from moving and falling off in the axial direction when the drill bit is working, an axial locking device (such as a ball locking device) is provided between the journal and the cone body. The axial locking device needs to process annular grooves in the journal and the cone body , the existence of the annular groove affects the strength of the journal and the cone and the wear resistance of the bearing, which shortens the service life of the bearing; second, even if the axial locking device of the cone is installed in the bearing structure, there is still an axial The failure of the locking device may cause the cone to fall off. Once the cone falls off, it will have a very adverse effect on the subsequent drilling process; thirdly, in order to ensure the strength of the cutting structure of the cone, the bearing structure of the cone and the cone The volume of the body itself is too large, occupying the valuable space of the drill bit; Fourth, in order to ensure the strength of the cone bearing, the size of the bearing needs to be increased, and the thickness of the cone shell should be reduced accordingly, which will easily lead to the cracking of the cone shell , The teeth are not strong enough to fix the teeth and so on. The existence of the above-mentioned shortcomings will seriously restrict the use of hybrid drill bits; moreover, the current drill bit torque is too large to reduce the lateral, axial, and torsional vibration of the drill bit, and the tool face of the drill bit is not easy to control, which will cause poor drilling, broken blades, and vibration of the drill bit. Problems such as premature failure of cutting teeth.
综上所述，目前牙轮—PDC混合钻头存在牙轮轴承寿命短、牙轮壳体容易开裂、牙轮占据的空间过大以及牙轮仍然存在掉落的问题。To sum up, the current roller cone-PDC hybrid drill bit has the problems of short roller bearing life, easy cracking of the roller casing, too much space occupied by the roller cone and still falling of the roller cone.
发明内容Contents of the invention
本发明的目的在于：针对牙轮—PDC混合钻头存在牙轮轴承寿命短、牙轮壳体容易开裂、牙轮占据的空间过大以及牙轮仍然存在掉落的问题，提供一种复合破岩机构和一种长寿命复合钻头。The purpose of the present invention is to provide a composite rock-breaking method for the cone-PDC hybrid drill bit, which has the problems of short cone bearing life, easy cracking of the cone shell, too large space occupied by the cone, and still falling of the cone. mechanism and a long-life composite drill.
为了实现上述目的，本发明采用的技术方案为：In order to achieve the above object, the technical scheme adopted in the present invention is:
一种混合破岩机构，包括滚动破岩部件和固定破岩部件，所述固定破岩部件上设置有凹部，所述滚动破岩部件以能够相对所述固定破岩部件枢转的方式设置在所述凹部内，所述滚动破岩部件包括轮体和沿所述轮体的圆周方向布置的破岩部，所述轮体的厚度D与所述破岩部在所述轮体厚度方向的尺寸d之比1.1≤D/d≤4。A hybrid rock-breaking mechanism, comprising a rolling rock-breaking part and a fixed rock-breaking part, the fixed rock-breaking part is provided with a concave part, and the rolling rock-breaking part is arranged in a pivotable manner relative to the fixed rock-breaking part In the concave part, the rolling rock breaking part includes a wheel body and a rock breaking part arranged along the circumferential direction of the wheel body, and the thickness D of the wheel body and the dimension d of the rock breaking part in the thickness direction of the wheel body The ratio of 1.1≤D/d≤4.
作为优选，所述破岩部为PDC切削齿或牙齿，所述轮体上设置有两圈所述破岩部，破岩效率更高，稳定性更好，寿命更长。Preferably, the rock breaking part is PDC cutting teeth or teeth, and the wheel body is provided with two turns of the rock breaking part, which has higher rock breaking efficiency, better stability and longer service life.
作为优选，所述混合破岩机构还包括轴件，所述轴件设置在所述凹部的侧壁上，所述轴件与所述轮体固定连接，磨损速率更低，寿命更长，稳定性更好。Preferably, the hybrid rock-breaking mechanism further includes a shaft, the shaft is arranged on the side wall of the recess, the shaft is fixedly connected with the wheel body, the wear rate is lower, the life is longer, and the stability is stable. Sex is better.
作为优选，所述混合破岩机构还包括轴件，所述轮体上设置有轴孔，所述轴件与所述轴孔配合，所述轴件固定设置在凹部侧壁上，质量更轻，稳定性更好。Preferably, the hybrid rock-breaking mechanism further includes a shaft, the wheel body is provided with a shaft hole, the shaft fits with the shaft hole, and the shaft is fixed on the side wall of the recess, and the weight is lighter , better stability.
作为优选，所述轴件内设置有润滑通道，所述润滑通道包括沿所述轴件直径方向布置的径向孔、沿所述轴件轴线布置的轴向孔和沿所述轴件圆周方向设置的环槽，所述径向孔与所述轴向孔相通，所述径向孔与所述环槽相通，从而滚动破岩部件的寿命更长。Preferably, a lubricating passage is provided in the shaft, and the lubricating passage includes radial holes arranged along the diameter direction of the shaft, axial holes arranged along the axis of the shaft, and axial holes arranged along the circumferential direction of the shaft. The provided ring groove, the radial hole communicates with the axial hole, and the radial hole communicates with the ring groove, so that the life of the rolling rock-breaking component is longer.
本申请还公开了一种长寿命混合钻头，包括本体，所述本体上设置有所述破岩机构。The application also discloses a long-life hybrid drill bit, which includes a body on which the rock-breaking mechanism is arranged.
作为优选，所述长寿命混合钻头包括至少两个所述混合破岩机构，每个复合破岩机构上设置有一个所述滚动破岩部件，一个所述混合破岩机构上的所述固定破岩部件与另一个所述混合破岩机构上的所述固定破岩部件相对于Z轴的距离不相等。Preferably, the long-life hybrid drill bit includes at least two hybrid rock-breaking mechanisms, each composite rock-breaking mechanism is provided with a rolling rock-breaking component, and one of the hybrid rock-breaking mechanisms is equipped with a fixed breaking mechanism. The distance between the rock component and the fixed rock-breaking component on the other hybrid rock-breaking mechanism relative to the Z axis is not equal.
作为优选，所述本体上还设置有所述固定破岩部件。Preferably, the body is also provided with the fixed rock-breaking component.
作为优选，所述本体上还设置有牙轮。Preferably, the body is also provided with a cone.
综上所述，由于采用了上述技术方案，本申请的有益效果是：滚动破岩部件相比于常规牙轮而言更小，因而壳体厚度将大大增加，有效减少现有牙轮钻头因牙轮壳体开裂或破损等引起牙轮脱落掉入井底而产生井下事故；滚动破岩部件布置在固定破岩部件的凹部内，两侧面均与凹部的内壁接触，从而没有轴向锁定装置，轴承系统的承载能力将大大增加，延长轴承系统寿命，轴承在受力均匀的情况下能明显提升轴承的密封能力，从而提高延长钻头的使用寿命；并且，依靠凹部的内壁能对滚动破岩部件体起到轴向止推和限位的作用，这样能显著减小滚动破岩部件掉落的风险，从而降低井下事故发生的概率；由于滚动破岩部件可以设置的很小，不再以破岩为目的，而能够降低钻头的扭矩、减小钻头横向、轴向、扭转振动，使得钻头工具面更加容易控制；将滚动破岩部件设置在固定破岩部件上的凹部内，就不需要在设置独立的滚动破岩结构，例如再独立的设置牙轮，从而节约钻头上宝贵的布齿空间。To sum up, due to the adoption of the above technical solution, the beneficial effect of the present application is that the rolling rock-breaking parts are smaller than conventional roller cones, so the shell thickness will be greatly increased, effectively reducing the existing roller cone bits due to Cracks or breakage of the cone shell cause the cone to fall into the bottom of the well and cause downhole accidents; the rolling rock-breaking parts are arranged in the recess of the fixed rock-breaking part, and both sides are in contact with the inner wall of the recess, so there is no axial locking device , the bearing capacity of the bearing system will be greatly increased, and the life of the bearing system will be extended. The bearing can significantly improve the sealing ability of the bearing under the condition of uniform force, thereby improving and extending the service life of the drill bit; The component body plays the role of axial thrust and limit, which can significantly reduce the risk of rolling rock-breaking components falling, thereby reducing the probability of downhole accidents; since the rolling rock-breaking components can be set very small, no longer For the purpose of rock breaking, it can reduce the torque of the drill bit, reduce the lateral, axial and torsional vibrations of the drill bit, making the tool face of the drill bit easier to control; the rolling rock breaking parts are set in the concave part of the fixed rock breaking parts, no need When setting up an independent rolling rock-breaking structure, such as setting the cones independently, this saves valuable space on the drill bit.
附图说明Description of drawings
图1为本申请混合破岩机构的结构示意图；Fig. 1 is the structural representation of the mixed rock-breaking mechanism of the present application;
图2为本申请长寿命混合钻头的结构示意图；Fig. 2 is the structural representation of the long-life hybrid drill bit of the present application;
图3为图2的俯视图；Fig. 3 is the top view of Fig. 2;
图4为本申请长寿命混合钻头的布齿包络结构图；Fig. 4 is the enveloping structure diagram of the arrangement of teeth of the long-life hybrid drill bit of the present application;
图5为区别于图1的本申请混合破岩机构的另一种结构示意图；Fig. 5 is another structural schematic diagram of the mixed rock-breaking mechanism of the present application different from Fig. 1;
图6为图3中的A-A截面的局部视图；Fig. 6 is a partial view of the A-A section in Fig. 3;
图7为图3中的A-A截面的局部视图，区别于图6的另一种结构；Fig. 7 is a partial view of the A-A section in Fig. 3, which is different from another structure of Fig. 6;
图8为图3中的A-A截面的局部视图，区别于图7的另一种结构；Fig. 8 is a partial view of the A-A section in Fig. 3, which is different from another structure in Fig. 7;
图中标记：1-本体、21-固定破岩结构、22-PDC齿、23-刀翼轮廓线、3-滚动破岩结构、31-轮体、32-破岩部、33-轴件、4-喷嘴或水眼、5-密封圈、6-凹部、7-岩石、8-润滑通道、81-径向孔，82-轴向孔，83-环槽，9-键、11-铜圈、12-堵头或者挡板。Marks in the figure: 1-body, 21-fixed rock-breaking structure, 22-PDC teeth, 23-blade outline, 3-rolling rock-breaking structure, 31-wheel body, 32-rock-breaking part, 33-shaft, 4 -nozzle or water eye, 5-sealing ring, 6-recess, 7-rock, 8-lubrication channel, 81-radial hole, 82-axial hole, 83-ring groove, 9-key, 11-copper ring, 12-plug or baffle.
具体实施方式detailed description
下面结合附图，对本发明作详细的说明。Below in conjunction with accompanying drawing, the present invention is described in detail.
为了使本发明的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本发明进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本发明，并不用于限定本发明。In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
如图1-8所示，一种混合破岩机构，包括滚动破岩部件和固定破岩部件，固定破岩部件也就是与钻杆固定连接的用于破碎岩石的部件，如PDC刀翼、金刚石钻头或空气锤钻头等，滚动破岩部件即是能够相对固定破岩部件旋转并在固定破岩部件带动下相对岩石滚动，进行滚动破岩，滚动破岩部件可以牙轮，也可以是把牙轮上的牙齿更换为PDC切削齿的新型部件，也可以是轮上设置有金刚石颗粒的新型部件，所述固定破岩部件上设置有凹部，所述滚动破岩部件以能够相对所述固定破岩部件枢转的方式设置在所述凹部内，所述滚动破岩部件包括轮体和沿所述轮体的圆周方向布置的破岩部，所述轮体的厚度D与所述破岩部在所述轮体厚度方向的尺寸d之比1.1≤D/d≤4，如此，滚动破岩部件相比于常规牙轮而言更小，因而壳体厚度将大大增加，有效减少现有牙轮钻头因牙轮壳体开裂或破损等引起牙轮脱落掉入井底而产生井下事故；滚动破岩部件布置在固定破岩部件的凹部内，两侧面均与凹部的内壁接触，从而没有轴向锁定装置，轴承系统的承载能力将大大增加，延长轴承系统寿命，轴承在受力均匀的情况下能明显提升轴承的密封能力，从而提高延长钻头的使用寿命；并且，依靠凹部的内壁能对滚动破岩部件体起到轴向止推和限位的作用，这样能显著减小滚动破岩部件掉落的风险，从而降低井下事故发生的概率；由于滚动破岩部件可以设置的很小，不再以破岩为目的，而能够降低钻头的扭矩、减小钻头横向、轴向、扭转振动，使得钻头工具面更加容易控制；将滚动破岩部件设置在固定破岩部件上的凹部内，就不需要在设置独立的滚动破岩结构，例如再独立的设置牙轮，从而节约钻头上宝贵的布齿空间。As shown in Figure 1-8, a hybrid rock-breaking mechanism includes rolling rock-breaking parts and fixed rock-breaking parts. The fixed rock-breaking parts are parts for breaking rocks that are fixedly connected with the drill pipe, such as PDC blades, Diamond drill bits or air hammer drill bits, etc., the rolling rock-breaking parts can rotate relative to the fixed rock-breaking parts and roll relative to the rock under the drive of the fixed rock-breaking parts to carry out rolling and breaking rocks. The rolling rock-breaking parts can be cones or handles. The teeth on the cone are replaced with new parts of PDC cutting teeth, and it can also be a new part with diamond particles on the wheel. The fixed rock-breaking part is provided with a concave part, and the rolling rock-breaking part can be relatively fixed. The rock-breaking part is pivotally arranged in the recess, the rolling rock-breaking part includes a wheel body and a rock-breaking part arranged along the circumferential direction of the wheel body, and the thickness D of the wheel body is the same as that of the rock-breaking part. The ratio of the dimension d in the thickness direction of the wheel body is 1.1≤D/d≤4. In this way, the rolling rock-breaking parts are smaller than the conventional cones, so the thickness of the shell will be greatly increased, effectively reducing the size of the existing cones. Due to the cracking or damage of the cone shell of the drill bit, the cone falls off and falls into the bottom of the well, resulting in downhole accidents; the rolling rock-breaking parts are arranged in the concave part of the fixed rock-breaking part, and both sides are in contact with the inner wall of the concave part, so there is no axial The locking device will greatly increase the bearing capacity of the bearing system and prolong the life of the bearing system. The bearing can significantly improve the sealing ability of the bearing under the condition of uniform force, thereby improving and extending the service life of the drill bit; and relying on the inner wall of the concave part. The body of the rock-breaking component plays the role of axial thrust and limit, which can significantly reduce the risk of falling of the rolling rock-breaking component, thereby reducing the probability of downhole accidents; since the rolling rock-breaking component can be set very small, no For the purpose of rock breaking, the torque of the drill bit can be reduced, and the lateral, axial and torsional vibrations of the drill bit can be reduced, making the tool surface of the drill bit easier to control; There is no need to set up an independent rolling rock-breaking structure, such as setting up the cones independently, thereby saving valuable space for tooth arrangement on the drill bit.
进一步的，所述破岩部为包括PDC切削齿和/或牙齿，所述轮体上设置有两圈所述破岩部，如此，破岩效率更高，稳定性更好，寿命更长。Further, the rock-breaking part includes PDC cutting teeth and/or teeth, and the wheel body is provided with two turns of the rock-breaking part, so that the rock-breaking efficiency is higher, the stability is better, and the service life is longer.
如图,6，混合破岩机构还包括轴件，所述轴件设置在所述凹部的侧壁上，所述轴件与所述轮体通过键、花键或过盈配合而固定连接，轮体不相对轴件转动，而是与轴件一起相对固定破岩部件转动，由此，磨损速率更低，寿命更长，稳定性更好。As shown in Figure 6, the hybrid rock-breaking mechanism also includes a shaft, the shaft is arranged on the side wall of the recess, and the shaft is fixedly connected to the wheel body through a key, spline or interference fit, The wheel body does not rotate relative to the shaft, but rotates together with the shaft relative to the fixed rock-breaking component, so that the wear rate is lower, the service life is longer, and the stability is better.
或者，区别于上述轴件与轮体固定连接形成的轮体与轴件一起相对固定破岩部件转动，也可以采用其他形式，如混合破岩机构还包括轴件，如图4、7和8所示，所述轮体上设置有轴孔，所述轴件与所述轴孔配合，所述轴件固定设置在凹部侧壁上，从而轮体能够相对所述轴件转动，参与滚动的零部件更少，质量更轻，稳定性更好。Or, different from the above-mentioned shaft and the wheel formed by the fixed connection of the wheel and the shaft to rotate relative to the fixed rock-breaking component, other forms can also be used, such as the hybrid rock-breaking mechanism also includes a shaft, as shown in Figures 4, 7 and 8 As shown, the wheel body is provided with a shaft hole, the shaft part is matched with the shaft hole, and the shaft part is fixedly arranged on the side wall of the recess, so that the wheel body can rotate relative to the shaft part and participate in the rolling process. Fewer parts, lighter weight and better stability.
进一步的，如图6-8所示，所述轴件内设置有润滑通道，所述润滑通道包括沿所述轴件直径方向布置的径向孔、沿所述轴件轴线布置的轴向孔和沿所述轴件圆周方向设置的环槽，所述径向孔与所述轴向孔相通，所述径向孔与所述环槽相通，如此，可以在润滑通道内通入润滑油，降低磨损速率，该润滑通道结构简单，润滑性能好，更加充分，从而滚动破岩部件的寿命更长，具体的，如图所示，在固定破岩部件上设置有与一个径向孔相通的油孔，以让润滑油通过油孔进入润滑通道。Further, as shown in Figures 6-8, a lubricating passage is provided inside the shaft, and the lubricating passage includes radial holes arranged along the diameter direction of the shaft and axial holes arranged along the axis of the shaft and an annular groove arranged along the circumferential direction of the shaft, the radial hole communicates with the axial hole, and the radial hole communicates with the annular groove, so that lubricating oil can be passed into the lubricating passage, Reduce the wear rate, the lubricating channel has a simple structure, good lubricating performance, and is more sufficient, so that the life of the rolling rock-breaking parts is longer. Specifically, as shown in the figure, a radial hole is provided on the fixed rock-breaking parts. Oil hole, so that lubricating oil can enter the lubrication channel through the oil hole.
本专利申请还公开了一种长寿命混合钻头，如图2和3，包括本体，所述本体上设置有上述混合破岩机构，从而长寿命混合钻头具有混合破岩机构的所有技术效果。This patent application also discloses a long-life hybrid drill bit, as shown in Figures 2 and 3, including a body on which the above-mentioned hybrid rock-breaking mechanism is arranged, so that the long-life hybrid drill bit has all the technical effects of the hybrid rock-breaking mechanism.
进一步的，如图2和3，长寿命混合钻头包括至少两个所述混合破岩机构，每个复合破岩机构上设置有一个所述滚动破岩部件，一个所述混合破岩机构上的所述固定破岩部件与另一个所述混合破岩机构上的所述固定破岩部件相对于Z轴的距离不相等，能够形成两个破岩坑环，进一步降低钻头的扭矩、减小钻头横向、轴向、扭转振动，使得钻头工具面更加容易控制；同时，也能够提高破岩效率。Further, as shown in Figures 2 and 3, the long-life hybrid drill bit includes at least two hybrid rock-breaking mechanisms, each composite rock-breaking mechanism is provided with one rolling rock-breaking component, and one of the hybrid rock-breaking mechanisms The distance between the fixed rock-breaking part and the other fixed rock-breaking part on the mixed rock-breaking mechanism relative to the Z axis is not equal, and two rock-breaking pit rings can be formed, which further reduces the torque of the drill bit and reduces the size of the drill bit. Lateral, axial and torsional vibrations make it easier to control the tool face of the drill bit; at the same time, it can also improve the rock breaking efficiency.
所述本体上还设置有所述固定破岩部件，如图所示，该固定破岩部件为PDC刀翼，如此，破岩效率更高，寿命更长，且能够进一步降低钻头的扭矩、减小钻头横向、轴向、扭转振动，使得钻头工具面更加容易控制。The body is also provided with the fixed rock-breaking component. As shown in the figure, the fixed rock-breaking component is a PDC blade. In this way, the rock-breaking efficiency is higher, the life is longer, and the torque of the drill bit can be further reduced. The lateral, axial and torsional vibrations of the small drill bit make it easier to control the tool face of the drill bit.
所述本体上还设置有牙轮，具体的，在常规PDC-牙轮复合钻头上的PDC刀翼更换为上述复合破岩机构，如此，破岩效率更高，寿命更长。The body is also provided with a cone, specifically, the PDC blade on the conventional PDC-cone composite drill bit is replaced with the above-mentioned composite rock-breaking mechanism, so that the rock-breaking efficiency is higher and the life is longer.
凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286929.9ACN107060653B (en) | 2017-04-27 | 2017-04-27 | A hybrid rock-breaking mechanism and a long-life hybrid drill bit |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710286929.9ACN107060653B (en) | 2017-04-27 | 2017-04-27 | A hybrid rock-breaking mechanism and a long-life hybrid drill bit |
| Publication Number | Publication Date |
|---|---|
| CN107060653Atrue CN107060653A (en) | 2017-08-18 |
| CN107060653B CN107060653B (en) | 2023-11-21 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710286929.9AActiveCN107060653B (en) | 2017-04-27 | 2017-04-27 | A hybrid rock-breaking mechanism and a long-life hybrid drill bit |
| Country | Link |
|---|---|
| CN (1) | CN107060653B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115822467A (en)* | 2022-11-30 | 2023-03-21 | 沧州格锐特钻头有限公司 | Fastening type PDC drill bit mechanism and rock breaking drilling tool assembly |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
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| CH428627A (en)* | 1965-02-09 | 1967-01-31 | Graefer Albrecht Dr Ing E H | Roller chisel |
| EP0408379A1 (en)* | 1989-07-14 | 1991-01-16 | David Patrick Payne | Improvements in drills |
| WO1995018692A1 (en)* | 1994-01-07 | 1995-07-13 | Josef Plattner | Cable-saw machine |
| US20050183892A1 (en)* | 2004-02-19 | 2005-08-25 | Oldham Jack T. | Casing and liner drilling bits, cutting elements therefor, and methods of use |
| US20140326515A1 (en)* | 2011-12-05 | 2014-11-06 | Smith International, Inc. | Rotating cutting elements for pdc bits |
| US20150368977A1 (en)* | 2013-02-07 | 2015-12-24 | Liyuan YANG | Composite drill bit provided with disc-type cutting structure on cutter blade |
| CN203796171U (en)* | 2013-11-07 | 2014-08-27 | 杨立源 | Composite drill bit |
| CN104196456A (en)* | 2014-08-27 | 2014-12-10 | 西南石油大学 | PDC drill tool with alternating cutting trajectory |
| CN205422543U (en)* | 2016-04-05 | 2016-08-03 | 刘哲岳 | Strike composite power coupling bearing of cutting and do not have sealed long -life geology drill bit |
| CN205895148U (en)* | 2016-08-09 | 2017-01-18 | 武汉亿斯达工具有限公司 | Roll and protect footpath PDC drill bit |
| CN106320989A (en)* | 2016-11-03 | 2017-01-11 | 西南石油大学 | Diamond drill bit |
| CN206129165U (en)* | 2016-11-03 | 2017-04-26 | 西南石油大学 | Diamond drill bit |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12084919B2 (en) | 2019-05-21 | 2024-09-10 | Schlumberger Technology Corporation | Hybrid bit |
| US12065883B2 (en) | 2020-09-29 | 2024-08-20 | Schlumberger Technology Corporation | Hybrid bit |
| CN115822467A (en)* | 2022-11-30 | 2023-03-21 | 沧州格锐特钻头有限公司 | Fastening type PDC drill bit mechanism and rock breaking drilling tool assembly |
| CN115822467B (en)* | 2022-11-30 | 2025-09-30 | 沧州格锐特钻头有限公司 | Fastened PDC drill bit mechanism and rock breaking drilling tool assembly |
| Publication number | Publication date |
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| CN107060653B (en) | 2023-11-21 |
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| EE01 | Entry into force of recordation of patent licensing contract | Application publication date:20170818 Assignee:Sichuan Chuanchuang Technology Co.,Ltd. Assignor:SOUTHWEST PETROLEUM University Contract record no.:X2025510000023 Denomination of invention:A hybrid rock breaking mechanism and a long-life hybrid bit Granted publication date:20231121 License type:Common License Record date:20250718 | |
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