技术领域technical field
本申请涉及钻探领域，尤其涉及控制钻进导向的旋转导向装置。The present application relates to the field of drilling, and in particular, to a rotary steering device for controlling drilling steering.
背景技术Background technique
为了获取地下贮藏的自然资源需要进行钻井勘探，在很多情况下，井孔与井架都不是对齐的，而是需要形成一定的偏移或者弯曲，这种形成水平或者竖直偏移或者其他类型的复杂井孔的过程叫做定向钻井。而在定向钻井过程中对钻头方向进行方向控制的过程叫做导向。现代导向钻井有滑动导向与旋转导向两种类型。滑动导向钻井时，钻柱不旋转；用井底动力钻具（涡轮钻具、螺杆钻具）带动钻头旋转。螺杆钻具及部分钻柱与扶正器贴靠井壁只能在井壁上下滑动。它的缺点是摩阻大、有效钻压、扭矩与功率小，钻速低、井眼呈螺旋状不光滑不干净、井身质量差、易事故，往往被迫启动钻盘采用“复合钻进”，而“复合钻进”往往只能有限使用。滑动导向的极限井深小于4000m左右。要较大改变井斜方位时，需起钻改变钻柱结构。旋转导向钻井系统是转盘驱动钻柱旋转，钻柱及旋转导向工具等在井壁上滚动，滚动摩擦阻力小，旋转导向钻井系统能在钻进中控制调整其造斜与定向功能，能随钻实时完成造斜、增斜、稳斜、降斜，且摩阻小、扭矩小、钻速高、钻头进尺多、时效高、成本低、井身平滑井轨易控。极限井身可达15km，是钻复杂结构井和海油陆系及超大位移井（10km）的新式武器。In order to obtain the natural resources stored underground, drilling and exploration are required. In many cases, the wellbore and the derrick are not aligned, but need to form a certain offset or bend, which forms a horizontal or vertical offset or other types of The process of complex wellbore is called directional drilling. In the process of directional drilling, the process of directional control of the direction of the drill bit is called steering. Modern steerable drilling has two types: sliding steerable and rotary steerable. During sliding steerable drilling, the drill string does not rotate; the bottom hole power drilling tool (turbine drilling tool, screw drilling tool) is used to drive the drill bit to rotate. The screw drilling tool, part of the drill string and the centralizer can only slide up and down the well wall against the well wall. Its disadvantages are high friction, effective WOB, low torque and power, low ROP, spiral-shaped, unsmooth and unclean wellbore, poor wellbore quality, and easy accidents. ”, while “compound drilling” tends to have limited use. The limit well depth of sliding steering is less than about 4000m. To greatly change the well inclination, it is necessary to change the drill string structure by tripping out. The rotary steerable drilling system is a rotary steerable drilling system that drives the drill string to rotate, and the drill string and rotary steerable tools roll on the well wall, with low rolling friction resistance. Real-time completion of inclination build-up, inclination increase, inclination stabilization, and declination, with low friction resistance, low torque, high drilling speed, high drill bit footage, high time efficiency, low cost, and smooth wellbore track and easy control. The limit wellbore can reach 15km. It is a new weapon for drilling complex structure wells, offshore oil and continental systems and ultra-reach wells (10km).
常用的旋转导向技术也有两种，一种是指向式导向，一种是推靠式导向。美国公司哈里伯顿获得的中国授权专利CN104619944B公开了一种指向式导向工具，其提供了模块化的致动器、导向工具和旋转式导向钻井系统，模块化致动器包括筒部，构造为耦接到外壳的外周。蓄液器容置在筒部中，液压致动的致动器滑动地设置在筒部内，在激活位置和未激活位置之间移动，使得致动器活塞选择性地挤压驱动轴的斜坡面从而改变钻柱的方向。美国专利申请文件US20140209389A1公开了一种旋转导向工具，其包括一个非旋转体，一个包括可偏转单元的旋转轴，通过控制偏芯轴套的周向位置使得可偏转单元进行偏转，进而调整钻头的钻孔方向。以上两种导向技术都属于指向式的导向，美国专利申请文件US20170107762A1公开了另一种类型的旋转导向技术，即推靠式旋转导向技术，其包括设置在钻杆四周的推靠件和用于驱动这些推靠件的液压驱动系统，液压驱动系统可选择地驱动推靠件在推靠位置和非推靠位置之间移动，在推靠位置时推靠件能够以拍打的方式推靠井壁从而产生导向力并改变钻孔的方向。There are also two commonly used rotary guide technologies, one is pointing guide and the other is push guide. The Chinese authorized patent CN104619944B obtained by the American company Halliburton discloses a directional steering tool, which provides a modular actuator, a steering tool and a rotary steerable drilling system. The modular actuator includes a barrel portion and is configured as coupled to the outer perimeter of the housing. An accumulator is housed in the barrel, and a hydraulically actuated actuator is slidingly disposed within the barrel to move between an activated position and an inactivated position such that the actuator piston selectively compresses the ramp surface of the drive shaft Thereby changing the direction of the drill string. The US patent application document US20140209389A1 discloses a rotary guide tool, which includes a non-rotating body, a rotating shaft including a deflectable unit, and the deflectable unit is deflected by controlling the circumferential position of the eccentric shaft sleeve, thereby adjusting the position of the drill bit. Drilling direction. Both of the above two steering technologies belong to directional steering, and US patent application US20170107762A1 discloses another type of rotary steering technology, namely the push-type rotary steering technology, which includes a push-up member arranged around the drill pipe and a A hydraulic drive system that drives these push members, the hydraulic drive system selectively drives the push members to move between a push position and a non-push position, in which the push members can be pushed against the well wall in a flapping manner This generates a guiding force and changes the direction of the drilling.
指向式导向和推靠式导向具有各自的特点，一般而言，指向式导向的造斜率是比较稳定的，受钻压和地层条件影响较小，但是其造斜率极值较低，在需要高造斜率的情况下难以满足要求，相对而言，推靠式导向的造斜率却不太稳定，受到钻压和地层条件影响较大，当钻压较低并且地层硬度合适时，造斜率较大，可以快速调整井眼轨迹，但是遇到过软地层时导向能力降低明显。Directional steering and push-back steering have their own characteristics. Generally speaking, the build-up rate of directional-steering is relatively stable, and is less affected by WOB and formation conditions, but its extreme value of build-up rate is low, and it needs high build rate. In the case of build-up rate, it is difficult to meet the requirements. Relatively speaking, the build-up rate of push-back steering is not stable, and is greatly affected by WOB and formation conditions. When the WOB is low and the formation hardness is appropriate, the build-up rate is larger. , the wellbore trajectory can be adjusted quickly, but the steering ability is significantly reduced when encountering soft formations.
除此以外，在井下的测控难度和能耗问题同样是非常重要的，一方面，当井下部件随着钻杆转动时造成相应部件的测量困难也是不能忽视的问题，如何使得数据测量变得简单是一项重要课题；另一方面，井下的能源主要来自于泥浆发电，除了保证井下的电子元件的工作外，还需要提供导向驱动装置所需要的能量，如何尽可能地以较低的功耗提供导向驱动同样十分重要。In addition, the difficulty of measurement and control and energy consumption in the downhole are also very important. On the one hand, when the downhole components rotate with the drill pipe, the measurement difficulty of the corresponding components is also a problem that cannot be ignored. How to make the data measurement simple It is an important topic; on the other hand, the downhole energy mainly comes from mud power generation. In addition to ensuring the work of the downhole electronic components, it is also necessary to provide the energy required by the steering drive device. How to use the lower power consumption as much as possible? It is also important to provide a guide drive.
因此，现有技术需要一种可降低控制难度的高造斜率的随钻旋转导向驱动技术。Therefore, there is a need in the prior art for a high build rate rotary steerable-while-drilling driving technology that can reduce control difficulty.
发明内容SUMMARY OF THE INVENTION
为了解决上述问题，本申请提出了一种旋转导向装置，包括：In order to solve the above problems, the present application proposes a rotary guide device, comprising:
旋转轴，所述旋转轴旋转驱动工具头，所述旋转轴包括至少一个可转向部；a rotating shaft that drives the tool bit in rotation, the rotating shaft including at least one steerable portion;
第一非旋转体和第二非旋转体，所述第一非旋转体和第二非旋转体在所述旋转轴旋转驱动所述工具头时在周向上相对于所述旋转轴大体上呈非旋转状态；A first non-rotating body and a second non-rotating body, the first non-rotating body and the second non-rotating body are substantially non-rotating relative to the rotating shaft in the circumferential direction when the rotating shaft rotationally drives the tool bit. rotation state;
导向驱动机构，所述导向驱动机构连接所述第一非旋转体和所述第二非旋转体，所述导向驱动机构适于产生大体上沿轴向的驱动力以改变所述第一非旋转体和所述第二非旋转体之间的相对方向，从而改变所述工具头的方向。A guide drive mechanism connecting the first non-rotating body and the second non-rotating body, the guide drive mechanism being adapted to generate a substantially axial driving force to change the first non-rotating body relative orientation between the body and the second non-rotating body, thereby changing the orientation of the tool head.
进一步地，所述可转向部包括万向传动件或者柔性轴。Further, the steerable part includes a universal transmission member or a flexible shaft.
进一步地，所述导向驱动机构包括至少三个液压驱动机构，所述至少三个液压驱动机构在周向上均匀分布。Further, the guide driving mechanism includes at least three hydraulic driving mechanisms, and the at least three hydraulic driving mechanisms are evenly distributed in the circumferential direction.
进一步地，所述导向驱动机构还适于产生大体上沿径向的驱动力以改变所述第一非旋转体和所述第二非旋转体之间的相对方向，从而改变所述工具头的方向。Further, the guide drive mechanism is also adapted to generate a substantially radial driving force to change the relative direction between the first non-rotating body and the second non-rotating body, thereby changing the tool head direction.
进一步地，所述导向驱动机构包括至少三个推靠部件，所述推靠部件适于沿所述旋转轴的径向上移动以推靠井壁从而改变所述工具头的方向。Further, the guide driving mechanism includes at least three pushing parts, and the pushing parts are adapted to move in the radial direction of the rotating shaft to push against the well wall to change the direction of the tool head.
进一步地，所述导向驱动机构包括设置在所述第一非旋转体内的第一活塞缸和设置在所述第二非旋转体内的第二活塞缸，所述第一活塞缸和所述第二活塞缸通过连杆连接，所述第二活塞缸适于驱动所述推靠部件移动。Further, the guide drive mechanism includes a first piston cylinder arranged in the first non-rotating body and a second piston cylinder arranged in the second non-rotating body, the first piston cylinder and the second The piston cylinder is connected by a connecting rod, and the second piston cylinder is adapted to drive the pushing member to move.
进一步地，所述连杆分别与所述第一活塞缸和所述第二活塞缸铰接，所述第二活塞缸的一端连接所述连杆，所述第二活塞缸的另一端连接所述推靠部件。Further, the connecting rod is hinged with the first piston cylinder and the second piston cylinder respectively, one end of the second piston cylinder is connected to the connecting rod, and the other end of the second piston cylinder is connected to the Push against the part.
另一方面，本申请还提出一种混合式旋转导向装置，所述混合式旋转导向装置包括：On the other hand, the present application also proposes a hybrid rotary guide device, the hybrid rotary guide device includes:
旋转轴，所述旋转轴旋转驱动工具头，所述旋转轴包括至少一个可转向部；a rotating shaft that drives the tool bit in rotation, the rotating shaft including at least one steerable portion;
第一非旋转体和第二非旋转体，所述第一非旋转体和第二非旋转体在所述旋转轴旋转驱动所述工具头时在周向上相对于所述旋转轴大体上呈非旋转状态；A first non-rotating body and a second non-rotating body, the first non-rotating body and the second non-rotating body are substantially non-rotating relative to the rotating shaft in the circumferential direction when the rotating shaft rotationally drives the tool bit. rotation state;
所述第一非旋转体和所述第二非旋转体内分别设置有活塞缸，所述第一非旋转体和所述第二非旋转体内的活塞分别与连杆的两端铰接，所述第二活塞缸适于驱动推靠部件使得所述推靠部件在第一位置和第二位置之间移动，其中，在所述第二位置处，各个所述推靠部件推靠井壁的合力产生第一导向力并且各个连杆作用于第二非旋转体的合力产生第二导向力。The first non-rotating body and the second non-rotating body are respectively provided with piston cylinders, the pistons in the first non-rotating body and the second non-rotating body are respectively hinged with both ends of the connecting rod, and the The two-piston cylinder is adapted to drive the abutment member so that the abutment member moves between a first position and a second position, wherein in the second position, a resultant force of each of the abutment members against the well wall is generated The second guiding force is generated by the first guiding force and the resultant force of each link acting on the second non-rotating body.
通过本申请提出的旋转导向装置，一方面，能够降低控制系统的测量控制难度，施力件可以采用常用的液压驱动即可，在方向控制上，也可以独立于钻杆的转动来控制指引钻头的方向，另一方面，通过本申请提出的基于两个非旋转体的导向装置，在混合导向模式下能够提供更大的可选造斜率范围，满足不同地层要求。The rotary guide device proposed in the present application can, on the one hand, reduce the difficulty of measurement and control of the control system. The force applying member can be driven by a common hydraulic pressure. In terms of direction control, the drill bit can also be controlled and guided independently of the rotation of the drill pipe. On the other hand, the guiding device based on two non-rotating bodies proposed in the present application can provide a larger range of selectable build-up slopes in the mixed guiding mode to meet the requirements of different formations.
附图说明Description of drawings
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:
图1为本申请第一实施例涉及的旋转导向装置；Fig. 1 is the rotary guide device involved in the first embodiment of the application;
图2为本申请第二实施例涉及的旋转导向装置。FIG. 2 is a rotary guide device according to a second embodiment of the present application.
具体实施方式Detailed ways
为了更清楚的阐释本申请的整体构思，下面结合说明书附图以示例的方式进行详细说明。需要说明的是，在本文中，诸如“第一”和“第二”等之类的关系术语仅仅用于将一个实体或者操作与另一个实体或者操作区分开来，而不一定要求或者暗示这些实体或者操作之间存在这种实际的关系或者顺序。而且，术语“包括”、“包含”或者其他任何类似的描述意在涵盖非排他行的包含，从而使得包括一系列的过程、方法、物品或者设备不仅仅包括这些要素，而且包括没有明确列出的其他要素，或者还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下，由语句“包括一个”等限定的要素，并不排除在包括所述要素外，还包括另外的相同要素。In order to explain the overall concept of the present application more clearly, the following detailed description is given by way of example in conjunction with the accompanying drawings. It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these This actual relationship or sequence exists between entities or operations. Moreover, the terms "comprising", "comprising" or any other similar description are intended to cover a non-exclusive inclusion such that a series of processes, methods, articles or devices are included not only including those elements, but also including not expressly listed or other elements inherent to such a process, method, article or apparatus. An element defined by the phrase "comprises an" etc. does not exclude the inclusion of additional identical elements in addition to the stated element, without further limitation.
本申请公开的旋转导向装置涉及到油田钻井或者其他勘探钻井的应用场景，与旋转导向装置相关的其它系统部件，例如井架系统，动力系统以及信号系统作为公知常识在此不做过多描述。The rotary steerable device disclosed in this application is related to the application scenarios of oil field drilling or other exploration drilling, and other system components related to the rotary steerable device, such as the derrick system, the power system and the signal system, are not described here as common knowledge.
第一实施例first embodiment
如图1所示，本实施例提出了一种旋转导向装置，在该实施例中，旋转导向装置总体上属于指向式的旋转导向，具体来说，该导向装置包括：旋转轴1，所述旋转轴1一端连接动力系统，另一端连接工具头5，所述旋转轴1旋转驱动工具头5实现对地层的钻进，在钻进过程中，上扶正器9和下扶正器8共同为钻具组合提供保持稳定的扶正作用力。所述旋转轴1包括至少一个可转向部4，在旋转驱动的过程中可转向部4能够传递扭矩，另一方面该可旋转部4为工具头的导向提供条件，具体地，可转向部4可以在相对于旋转轴1一定锥角的范围内提供转向自由度，该锥角的大小取决于导向装置的造斜率，造斜率越大，可转向部4活动的锥角范围越大。As shown in FIG. 1 , this embodiment proposes a rotary guide device. In this embodiment, the rotary guide device generally belongs to a directional rotary guide. One end of the rotating shaft 1 is connected to the power system, and the other end is connected to the tool head 5. The rotating shaft 1 rotates and drives the tool head 5 to realize drilling into the formation. During the drilling process, the upper centralizer 9 and the lower centralizer 8 are jointly used for drilling The tool combination provides a stable righting force. The rotating shaft 1 includes at least one steerable portion 4, which can transmit torque during the rotational driving process. On the other hand, the rotatable portion 4 provides conditions for the guidance of the tool head, specifically, the steerable portion 4 The steering freedom can be provided within a range of a certain taper angle relative to the rotating shaft 1 , and the size of the taper angle depends on the build-up rate of the guide device.
导向装置还包括第一非旋转体2和第二非旋转体3，所述第一非旋转体2和第二非旋转体3在所述旋转轴1旋转驱动所述工具头5时在周向上相对于所述旋转轴大体上呈非旋转状态。第一非旋转体2和第二非旋转体3分别通过轴承10和轴承11安装在旋转轴1上，在旋转轴1转动时，第一非旋转体2和第二非旋转体3大体上是周向静止的，严格的说，在旋转轴1微小的摩擦力的带动下，第一非旋转体2和第二非旋转体3以较低的速度转动。The guide device further includes a first non-rotating body 2 and a second non-rotating body 3, the first non-rotating body 2 and the second non-rotating body 3 are in the circumferential direction when the rotary shaft 1 rotates and drives the tool head 5 A substantially non-rotating state relative to the axis of rotation. The first non-rotating body 2 and the second non-rotating body 3 are respectively mounted on the rotary shaft 1 through the bearing 10 and the bearing 11. When the rotary shaft 1 rotates, the first non-rotating body 2 and the second non-rotating body 3 are generally Circumferentially stationary, strictly speaking, the first non-rotating body 2 and the second non-rotating body 3 rotate at a relatively low speed under the driving of the slight frictional force of the rotating shaft 1 .
导向装置还包括导向驱动机构6，所述导向驱动机构6连接所述第一非旋转体2和所述第二非旋转体3，所述导向驱动机构6适于产生大体上沿轴向的驱动力以改变所述第一非旋转体2和所述第二非旋转体3之间的相对方向，从而改变所述工具头的方向。如图1所示，第一非旋转体2和所述第二非旋转体3分别布置在可转向部4的两侧，在旋转导向时，导向驱动机构6以所述可转向部4左侧的第一非旋转体2为座向输出轴向驱动力，在该轴向驱动力与所述旋转轴1的轴线不重合时，该轴向驱动力从所述第二非旋转体3向所述可转向部4右侧的轴传递，进而能够产生以所述可转向部4为支点的转矩，实现旋转导向。The guide device further comprises a guide drive mechanism 6 connecting the first non-rotating body 2 and the second non-rotating body 3, the guide drive mechanism 6 being adapted to generate a substantially axial drive force to change the relative direction between the first non-rotating body 2 and the second non-rotating body 3, thereby changing the direction of the tool head. As shown in FIG. 1 , the first non-rotating body 2 and the second non-rotating body 3 are respectively arranged on both sides of the steerable part 4 , and the guide drive mechanism 6 is guided to the left side of the steerable part 4 during the rotation guide. The first non-rotating body 2 is the seat to output the axial driving force. When the axial driving force does not coincide with the axis of the rotating shaft 1, the axial driving force is transmitted from the second non-rotating body 3 to the other. The shaft on the right side of the steerable portion 4 is transmitted, and then a torque with the steerable portion 4 as a fulcrum can be generated to realize rotational guidance.
图1中展示的实施方式中，所述可转向部4的实现形式为万向传动件，该万向传动件位于两个非旋转体大体中间位置。本领域技术人员可以理解的是，所述可转向部4还可以通过其他形式实现，例如将旋转轴1的局部设置为柔性轴。In the embodiment shown in FIG. 1 , the steerable portion 4 is realized in the form of a universal transmission member, and the universal transmission member is located at a substantially intermediate position between the two non-rotating bodies. Those skilled in the art can understand that the steerable portion 4 can also be realized in other forms, for example, a part of the rotating shaft 1 is set as a flexible shaft.
在一个图1没有详细展示的优选实施方式中，所述导向驱动机构包括至少三个液压驱动机构6，所述至少三个液压驱动机构6在周向上均匀分布。各液压驱动机构6分别包括连杆6-1、滑块6-2、活塞6-3、液腔6-4，液腔6-4内的液体驱动活塞6-4移动进而驱动滑块6-2和连杆6-1移动，连杆6-1左侧与滑块6-2铰接，连杆6-1右侧与所述第二非旋转体3铰接。所述第一非旋转体2内还包括液压单元7以及电路仓11。In a preferred embodiment not shown in detail in FIG. 1 , the guide drive mechanism includes at least three hydraulic drive mechanisms 6 , which are evenly distributed in the circumferential direction. Each hydraulic drive mechanism 6 includes a connecting rod 6-1, a sliding block 6-2, a piston 6-3, and a liquid chamber 6-4. The liquid in the liquid chamber 6-4 drives the piston 6-4 to move and then drives the sliding block 6-4. 2 and the connecting rod 6-1 move, the left side of the connecting rod 6-1 is hinged with the slider 6-2, and the right side of the connecting rod 6-1 is hinged with the second non-rotating body 3. The first non-rotating body 2 also includes a hydraulic unit 7 and a circuit compartment 11 .
前述的沿轴向的驱动力是所述至少三个液压驱动机构6的合力产生的，举例来说，所述导向驱动机构可以包括各自间隔120度的三个液压驱动机构6，三个液压驱动机构6的驱动力可选地在0-F之间变化，可以理解的是，三者能够分别使第二非旋转体3相对于可转向部4产生一定的转矩，三者产生的转矩之和便为实际导向驱动的转矩，该转矩在旋转轴的横截面上的方向为0-360度。在导向过程中，由于第一非旋转体2和第二非旋转体3均大体上相对于驱动轴非旋转，为针对两者的数据测量提供了便捷。The aforementioned driving force along the axial direction is generated by the resultant force of the at least three hydraulic driving mechanisms 6. For example, the guiding driving mechanism may include three hydraulic driving mechanisms The driving force of the mechanism 6 can be optionally changed between 0-F. It can be understood that the three can respectively cause the second non-rotating body 3 to generate a certain torque relative to the steerable part 4, and the torque generated by the three The sum is the torque of the actual guided drive, which is 0-360 degrees in the direction of the cross-section of the rotating shaft. During the guiding process, since both the first non-rotating body 2 and the second non-rotating body 3 are substantially non-rotating relative to the drive shaft, data measurement for both is facilitated.
第二实施例Second Embodiment
如图2所示，作为一个优选的实施方式，第二实施例提出了一种混合式旋转导向装置，与第一实施例不同的是，所述导向驱动机构6还适于产生大体上沿径向的驱动力以改变所述第一非旋转体和所述第二非旋转体之间的相对方向，从而改变所述工具头的方向。As shown in FIG. 2 , as a preferred embodiment, the second embodiment proposes a hybrid rotary guide device. Different from the first embodiment, the guide driving mechanism 6 is also adapted to generate a substantially radial The direction of the tool head is changed by changing the relative direction between the first non-rotating body and the second non-rotating body by increasing the driving force in the direction.
在一个图2没有详细展示的优选实施方式中，所述导向驱动机构包括至少三个推靠部件8，所述推靠部件适于沿所述旋转轴的径向上移动以推靠井壁从而改变所述工具头的方向。各个推靠部件分别与前述的液压驱动机构驱动连接。在图2展示的实施方式中，所述推靠部件8与井壁作用提供导向驱动力同时还能够承担扶正器的作用。所述导向驱动机构包括设置在所述第一非旋转体2内的第一活塞缸和设置在所述第二非旋转体3内的第二活塞缸，所述第一活塞缸和所述第二活塞缸通过连杆6-1连接，所述第二活塞缸适于驱动所述推靠部件移动。所述连杆6-1分别与所述第一活塞缸和所述第二活塞缸铰接，所述第二活塞缸的一端连接所述连杆6-1，所述第二活塞缸的另一端连接所述推靠部件8。具体地，所述第二非旋转体3内设置有第二活塞缸，第二活塞缸的活塞6-6用于驱动推靠部件8，所述第二非旋转体3上设置有用于限制所述的推靠部件8活动范围的限位结构或者限位装置（图中未示出），从而使得所述推靠部件8能够在限定的范围内径向地活动。在导向驱动时，液压驱动活塞6-3移动从而带动滑块6-2和连杆6-1移动，连杆6-1推动滑块6-5移动进而推动活塞6-6，活塞6-6驱动推靠部件8径向向外移动，并推靠井壁，产生导向驱动力。举例来说，所述导向驱动机构可以具有三个液压驱动机构6和三个推靠部件8，一方面，三个液压驱动机构6能够分别产生使第二非旋转体3相对于可转向部4产生一定的转矩，三者产生的转矩之和便为实际的轴向驱动的转矩，另一方面，三个推靠部件也可以分别地产生径向的作用力，这些径向作用力同样能够产生相对于可转向部4的转矩，作用于可转向部4的转矩之和便形成当前的导向驱动力。In a preferred embodiment, which is not shown in detail in FIG. 2 , the guide drive mechanism comprises at least three pushing members 8 , which are adapted to move in the radial direction of the rotating shaft to push against the well wall to change the Orientation of the tool head. Each of the pushing parts is respectively drivingly connected with the aforementioned hydraulic drive mechanism. In the embodiment shown in FIG. 2 , the pushing member 8 acts with the well wall to provide a guiding driving force and can also act as a centralizer. The guide drive mechanism includes a first piston cylinder provided in the first non-rotating body 2 and a second piston cylinder provided in the second non-rotating body 3, the first piston cylinder and the first piston cylinder The two piston cylinders are connected by a connecting rod 6-1, and the second piston cylinder is suitable for driving the pushing member to move. The connecting rod 6-1 is hinged with the first piston cylinder and the second piston cylinder, one end of the second piston cylinder is connected to the connecting rod 6-1, and the other end of the second piston cylinder is connected to the connecting rod 6-1. The pushing member 8 is connected. Specifically, the second non-rotating body 3 is provided with a second piston cylinder, the pistons 6-6 of the second piston cylinder are used to drive the pushing member 8, and the second non-rotating body 3 is provided with a second piston cylinder for limiting the The limiting structure or limiting device (not shown in the figure) for the movable range of the pushing member 8 is used, so that the pushing member 8 can move radially within a limited range. During the guide drive, the hydraulic drive piston 6-3 moves to drive the slider 6-2 and the connecting rod 6-1 to move, the connecting rod 6-1 pushes the slider 6-5 to move and then pushes the piston 6-6, the piston 6-6 The driving pushing member 8 moves radially outward and pushes against the well wall to generate a guiding driving force. For example, the guide driving mechanism may have three hydraulic driving mechanisms 6 and three pushing parts 8 . On the one hand, the three hydraulic driving mechanisms 6 can respectively generate the second non-rotating body 3 relative to the steerable part 4 . A certain torque is generated, and the sum of the torques generated by the three is the actual axial driving torque. On the other hand, the three pushing parts can also generate radial forces respectively, and these radial forces It is also possible to generate a torque relative to the steerable portion 4, and the sum of the torques acting on the steerable portion 4 forms the current guide driving force.
对于提高造斜率十分有利的是，本实施例的提供了混合式的导向驱动，能够结合指向式导向和推靠式导向的优点，并且在很大程度上消除地层性质对造斜率的影响，与此同时，本实施例的驱动结构中，单个驱动链中产生的轴向驱动力和径向驱动力所产生的转矩方向是一致的，造斜率是两者的叠加，因而能够提供更高的造斜率。It is very advantageous to improve the build-up rate. This embodiment provides a hybrid steering drive, which can combine the advantages of directional steering and push-type steering, and eliminates the influence of formation properties on the build-up rate to a large extent. At the same time, in the drive structure of this embodiment, the axial driving force generated in a single drive chain and the torque generated by the radial driving force are in the same direction, and the build-up rate is the superposition of the two, so it can provide higher Build slope.
另一方面，本申请还提出一种混合式旋转导向装置，所述混合式旋转导向装置包括：On the other hand, the present application also proposes a hybrid rotary guide device, the hybrid rotary guide device includes:
旋转轴，所述旋转轴旋转驱动工具头，所述旋转轴包括至少一个可转向部；a rotating shaft that drives the tool bit in rotation, the rotating shaft including at least one steerable portion;
第一非旋转体和第二非旋转体，所述第一非旋转体和第二非旋转体在所述旋转轴旋转驱动所述工具头时在周向上相对于所述旋转轴大体上呈非旋转状态；A first non-rotating body and a second non-rotating body, the first non-rotating body and the second non-rotating body are substantially non-rotating relative to the rotating shaft in the circumferential direction when the rotating shaft rotationally drives the tool bit. rotation state;
所述第一非旋转体和所述第二非旋转体内分别设置有活塞缸，所述第一非旋转体和所述第二非旋转体内的活塞分别与连杆的两端铰接，所述第二活塞缸适于驱动推靠部件使得所述推靠部件在第一位置和第二位置之间移动，其中，在所述第二位置处，各个所述推靠部件推靠井壁的合力产生第一导向力并且各个连杆作用于第二非旋转体的合力产生第二导向力。The first non-rotating body and the second non-rotating body are respectively provided with piston cylinders, the pistons in the first non-rotating body and the second non-rotating body are respectively hinged with both ends of the connecting rod, and the The two-piston cylinder is adapted to drive the abutment member so that the abutment member moves between a first position and a second position, wherein in the second position, a resultant force of each of the abutment members against the well wall is generated The second guiding force is generated by the first guiding force and the resultant force of each link acting on the second non-rotating body.
通过本申请提出的旋转导向装置，一方面，能够降低控制系统的测量控制难度，施力件可以采用常用的液压驱动即可，在方向控制上，也可以独立于钻杆的转动来控制指引钻头的方向，另一方面，通过本申请提出的基于两个非旋转体的导向装置，在混合导向模式下能够提供更大的可选造斜率范围，满足不同地层要求。The rotary guide device proposed in the present application can, on the one hand, reduce the difficulty of measurement and control of the control system. The force applying member can be driven by a common hydraulic pressure. In terms of direction control, the drill bit can also be controlled and guided independently of the rotation of the drill pipe. On the other hand, the guiding device based on two non-rotating bodies proposed in the present application can provide a larger range of selectable build-up slopes in the mixed guiding mode to meet the requirements of different formations.
说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。尤其，对于系统实施例而言，由于其基本相似于方法实施例，所以描述的比较简单，相关之处参见方法实施例的部分说明即可。Each embodiment in the specification is described in a progressive manner, and the same and similar parts between the various embodiments may be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the system embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and for related parts, please refer to the partial descriptions of the method embodiments.
以上所述仅为本申请的实施例而已，并不用于限制本申请。对于本领域技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原理之内所作的任何修改、等同替换、改进等，均应包含在本申请的权利要求范围之内。The above descriptions are merely examples of the present application, and are not intended to limit the present application. Various modifications and variations of this application are possible for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included within the scope of the claims of this application.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119993.4ACN107939291B (en) | 2017-11-14 | 2017-11-14 | a rotary guide |
| PCT/CN2018/000086WO2019095527A1 (en) | 2017-11-14 | 2018-03-02 | Rotary guide device |
| EP18879923.3AEP3613940B1 (en) | 2017-11-14 | 2018-03-02 | Rotary guide device |
| JP2019523606AJP6821802B2 (en) | 2017-11-14 | 2018-03-02 | Rotary steerable device |
| US16/466,204US20200190909A1 (en) | 2017-11-14 | 2018-03-02 | A rotary guiding device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711119993.4ACN107939291B (en) | 2017-11-14 | 2017-11-14 | a rotary guide |
| Publication Number | Publication Date |
|---|---|
| CN107939291A CN107939291A (en) | 2018-04-20 |
| CN107939291Btrue CN107939291B (en) | 2019-07-09 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711119993.4AActiveCN107939291B (en) | 2017-11-14 | 2017-11-14 | a rotary guide |
| Country | Link |
|---|---|
| US (1) | US20200190909A1 (en) |
| EP (1) | EP3613940B1 (en) |
| JP (1) | JP6821802B2 (en) |
| CN (1) | CN107939291B (en) |
| WO (1) | WO2019095527A1 (en) |
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