技术领域technical field
本实用新型属于石油天然气钻井、煤层气钻井、地质勘探、矿山钻探等行业井下作业设备领域，具体涉及一种恒压式旋转振击马达。The utility model belongs to the field of downhole operation equipment in industries such as petroleum and natural gas drilling, coal bed gas drilling, geological exploration, mine drilling, etc., and specifically relates to a constant pressure rotary vibrating motor.
背景技术Background technique
随着浅部油气藏的开发殆尽，深井、超深井的数量逐年增加，但随着井深的增加，岩层更加坚硬难以破碎，严重影响了机械钻速的提高，钻速的降低已经成为制约我国深层油气藏高效开发的技术瓶颈，而现有常规破岩钻井技术不能满足提速提效的工艺要求，国外对于先进提速技术保密垄断，限制了国内技术的发展。“PDC+马达”复合钻井工艺技术既能发挥PDC钻头高效切削的优势，又能进行复合钻进，防斜打直效果较好，还能降低地面机泵的能耗，因此在深井、超深井的钻探过程中得到了广泛应用，但为了防止井斜只能采用小钻压的钻井方式，而钻压是影响钻速的关键因素，对于常规“PDC+马达”工艺，钻压较小虽然有利于确保井身质量，有利于防斜打直，但在一定程度上是以牺牲钻速为代价的，现场实践证明，适当增大钻压能够大幅提高钻井速度，但容易造成井斜角过大，影响井身质量，并且导致井底钻头发生轴向振动，使得施加在钻头上的钻压不稳定，损坏钻头切削齿，减小钻头使用寿命，降低机械钻速，国内外相关研究结果表明，轴向减振工具越靠近钻头，减振效果越好，而现有螺杆马达不具备减振功能，如果将现有常规减振工具安装在螺杆马达的上部，就延长了减振工具到钻头的距离，从而降低了减振效果，并且目前未见到减振工具安装在马达与钻头之间的应用实例；现场实践证明，旋转振击效应能够有效提高PDC钻头的切削能量，防止粘滑振动的影响，保护钻头，对于提高钻速具有积极作用，国内外也提出了相关扭力冲击工具的专利（CN201520767504.6、CN201410514618.X、CN201310726252.8、CN201410306930.X、CN201310586179.9、CN201010511421.2、CN200910058083.9、CN201310698227.3、CN201420040141.1），但是现有扭力冲击工具结构复杂，零部件较多，体积较大，且扭力冲击工具需要在较大钻压条件下才能发挥功效，而钻压大时，不仅会造成井眼发生偏斜，影响井身质量，还会产生轴向振动，如果减小钻压，确保了井身质量，但又不能发挥扭力冲击工具的功效，目前国内外也未见到扭力冲击工具与马达配合使用的应用实例，由此可见，如果将常规扭力冲击工具与马达简单的连接起来，不仅影响“PDC+马达”工艺的提速效果，还可能引起马达内部结构的损坏；并且国内外现有马达只具有利用钻井液能量驱动钻头旋转的简单功能，不同时具备轴向减振或旋转振击的功能，因此急需设计研发一种既具有减振功能，且减振器尽可能靠近钻头，还能够产生旋转振击效应，在发挥PDC钻头技术优势的同时还能保护钻头，还要结构简单，性能可靠，维护操作方便的恒压式旋转振击螺杆马达，这对于发挥“PDC+马达”钻井工艺技术优势，进一步提高钻井破岩的效率，提升我国深层油气藏高效开发的钻井工艺技术水平，增强国际竞争力具有重要的经济价值和社会价值。With the development of shallow oil and gas reservoirs exhausted, the number of deep wells and ultra-deep wells has increased year by year. However, with the increase of well depth, the rock formations are harder and harder to break, which seriously affects the increase of ROP. The reduction of ROP has become a constraint in our country. The technical bottleneck of efficient development of deep oil and gas reservoirs, and the existing conventional rock-breaking drilling technology cannot meet the technological requirements for speed-up and efficiency-enhancing. Foreign countries have a secret monopoly on advanced speed-up technology, which limits the development of domestic technology. The "PDC+motor" composite drilling technology can not only give full play to the advantages of high-efficiency cutting of PDC bits, but also perform composite drilling. It has been widely used in the drilling process, but in order to prevent well deviation, the drilling method with small WOB can only be used, and the WOB is the key factor affecting the drilling speed. For the conventional "PDC+motor" technology, although the small WOB is beneficial to ensure The quality of the well body is beneficial to deflection prevention and straightening, but to a certain extent it is at the cost of sacrificing the drilling speed. Field practice has proved that appropriately increasing the drilling pressure can greatly increase the drilling speed, but it is easy to cause the well inclination angle to be too large and affect the drilling speed. The quality of the wellbore and the axial vibration of the bottom hole drill bit make the WOB applied to the drill bit unstable, damage the cutting teeth of the drill bit, reduce the service life of the drill bit, and reduce the ROP. Relevant research results at home and abroad show that the axial The closer the vibration damping tool is to the drill bit, the better the vibration damping effect, but the existing screw motor does not have the vibration damping function. If the existing conventional vibration damping tool is installed on the upper part of the screw motor, the distance from the vibration damping tool to the drill bit will be extended. Therefore, the vibration reduction effect is reduced, and there is no application example where the vibration reduction tool is installed between the motor and the drill bit; field practice has proved that the rotary vibration effect can effectively increase the cutting energy of the PDC drill bit and prevent the influence of stick-slip vibration. Protecting the drill bit has a positive effect on improving the drilling speed. Patents related to torsion impact tools have also been proposed at home and abroad (CN201520767504.6, CN201410514618.X, CN201310726252.8, CN201410306930.X, CN201310586179.9, CN201010511421.2, CN058091 , CN201310698227.3, CN201420040141.1), but the existing torsion impact tool has complex structure, many parts and large volume, and the torsion impact tool needs to be effective under the condition of high bit pressure, and when the bit pressure is large, Not only will it cause the wellbore to deviate and affect the quality of the wellbore, but it will also generate axial vibration. If the drilling pressure is reduced, the quality of the wellbore can be ensured, but the effect of the torsion impact tool cannot be exerted. It has not been seen at home and abroad at present. Application examples of torque impact tools used in conjunction with motors. It can be seen that if a conventional torque impact tool is simply connected to a motor, it will not only affect the speed-up effect of the "PDC+motor" process, but may also cause damage to the internal structure of the motor; and domestic Existing motors only have the simple function of using drilling fluid energy to drive the drill bit to rotate, and do not have the function of axial vibration reduction or rotational vibration. The drill bit can also produce a rotary vibration effect, which can protect the drill bit while taking advantage of the technical advantages of the PDC drill bit. It also has a simple structure, reliable performance, and a constant pressure rotary vibration screw motor that is easy to maintain and operate. "Drilling technology advantages, further improve It is of great economic and social value to improve the efficiency of drilling and breaking rocks, improve the level of drilling technology for efficient development of deep oil and gas reservoirs in my country, and enhance international competitiveness.
实用新型内容Utility model content
为了进一步提高深井、超深井的钻井速度，在现有技术装备的基础上，既要充分发挥“PDC+马达”复合钻井工艺的提速优势，又要兼顾防斜打直效果，提高井眼质量的控制能力，还要降低钻井综合成本，缩短施工作业周期，满足深层油气藏高效开发钻井的工艺要求，打破国外在深井、超深井提高钻速方面的技术垄断。本实用新型的目的就是为石油天然气钻井、煤层气钻井、地质勘探、矿山钻探等的现场提供一种具有减振或旋转振击功能的恒压式旋转振击马达。In order to further increase the drilling speed of deep wells and ultra-deep wells, on the basis of existing technical equipment, it is necessary to give full play to the speed-up advantages of the "PDC+motor" composite drilling technology, and to take into account the effect of anti-deviation and straightening to improve the control of wellbore quality In addition, it is necessary to reduce the overall cost of drilling, shorten the construction cycle, meet the technological requirements for efficient development and drilling of deep oil and gas reservoirs, and break the technological monopoly of foreign countries in increasing the drilling speed of deep and ultra-deep wells. The purpose of the utility model is to provide a constant pressure rotary vibrating motor with vibration reduction or rotary vibrating function for oil and gas drilling, coal bed methane drilling, geological exploration, mine drilling and other sites.
本实用新型解决其技术问题所采用的技术方案是：The technical scheme that the utility model solves its technical problem adopts is:
一种恒压式旋转振击螺杆马达，包括外壳体以及其内安装的旋转机构，其中：A constant pressure rotary vibrating screw motor, including an outer casing and a rotating mechanism installed inside it, wherein:
所述旋转机构包括自上而下依次连接的容积式动力总成、传动轴以及定阀； 所述传动轴为中空管状且其与外壳体之间形成环空A，所述定阀上端与传动轴下端传动连接，且定阀外壁上下两端与外壳体之间形成密封配合，所述传动轴壁上设有将环空A与其内腔连通的旁通孔；The rotating mechanism includes a volumetric power assembly, a transmission shaft and a fixed valve sequentially connected from top to bottom; The lower end of the shaft is connected by transmission, and the upper and lower ends of the outer wall of the fixed valve form a sealing fit with the outer shell, and the wall of the transmission shaft is provided with a bypass hole connecting the annular space A with its inner cavity;
所述定阀外壁中部与外壳体之间形成环空B，且该环空B内安装有能够绕定阀相对旋转的动阀；所述定阀外壁中部对称设有两条轴向的导向块且将环空B间隔为对称布置的两个半腔，所述导向块与外壳体之间形成密封配合；所述动阀包括分别位于所述两半腔中的滑块，每个滑块分别将对应的半腔分为腔室A和腔室C且每个滑块的中央开槽并与外壳体、定阀包围构成腔室B；所述定阀的内腔中央通过安全阀分割为上下两腔，且上腔侧壁设有多个高压孔、下腔侧壁设有多个低压孔，所述高压孔与腔室B对应连通，所述低压孔与腔室A和腔室C对应连通；An annular space B is formed between the middle part of the outer wall of the fixed valve and the outer shell, and a movable valve capable of relative rotation around the fixed valve is installed in the annular space B; two axial guide blocks are symmetrically arranged in the middle part of the outer wall of the fixed valve And the annulus B is divided into two semi-chambers symmetrically arranged, and a sealing fit is formed between the guide block and the outer casing; the movable valve includes sliders respectively located in the two halves of the chamber, and each slider is respectively The corresponding half chamber is divided into chamber A and chamber C, and the center of each slider is slotted and surrounded by the outer shell and the fixed valve to form chamber B; the center of the inner chamber of the fixed valve is divided into upper and lower chambers by a safety valve Two chambers, and the side wall of the upper chamber is provided with multiple high-pressure holes, and the side wall of the lower chamber is provided with multiple low-pressure holes. The high-pressure holes communicate with chamber B correspondingly, and the low-pressure holes correspond to chamber A and chamber C. connected;
所述定阀外壁上开设有两条槽型通道，用于分别连通腔室A与腔室B、腔室B与腔室C；当所述动阀绕定阀转动时，所述滑块上部能够交替打开槽型通道而将腔室A与腔室B、腔室B与腔室C分别连通，同时所述滑块下部能够将腔室A与腔室C交替连通低压孔。There are two groove-shaped passages on the outer wall of the fixed valve, which are used to communicate with chamber A and chamber B, chamber B and chamber C respectively; when the movable valve rotates around the fixed valve, the upper part of the slider The grooved channels can be opened alternately to connect chamber A and chamber B, chamber B and chamber C respectively, and meanwhile, the lower part of the slider can connect chamber A and chamber C to the low-pressure hole alternately.
进一步的，所述容积式动力总成与传动轴之间安装联轴器。Further, a coupling is installed between the volumetric power assembly and the transmission shaft.
进一步的，所述传动轴与定阀之间安装弹簧，传动轴与定阀构成花键配合。Further, a spring is installed between the transmission shaft and the fixed valve, and the transmission shaft and the fixed valve form a spline fit.
进一步的，所述传动轴下部设有花键，传动轴通过花键与定阀内壁构成花键配合。Further, the lower part of the transmission shaft is provided with a spline, and the transmission shaft forms a spline fit with the inner wall of the fixed valve through the spline.
进一步的，所述定阀外壁与外壳体内壁之间安装有第一密封装置、第二密封装置。Further, a first sealing device and a second sealing device are installed between the outer wall of the fixed valve and the inner wall of the casing.
进一步的，所述传动轴和外壳体上部之间安装上扶正轴承；所述定阀下部与外壳体下部之间安装下扶正轴承。Further, an upper centralizing bearing is installed between the transmission shaft and the upper part of the outer casing; a lower centralizing bearing is installed between the lower part of the fixed valve and the lower part of the outer casing.
进一步的，恒压式旋转振击马达还包括推力轴承，所述推力轴承安装在传动轴与弹簧之间，并且安装在上扶正轴承下部。Further, the constant pressure rotary vibrating motor also includes a thrust bearing installed between the transmission shaft and the spring, and installed at the lower part of the upper centralizing bearing.
本实用新型的原理是：定阀、动阀、外壳体内壁之间分别形成腔室A、腔室B、腔室C、腔室D、腔室E、腔室F（腔室A、腔室B、腔室C位于一个半腔，腔室D、腔室E、腔室F元位于另一个半腔，结构以及作用原理相同），在钻井液作用下，容积式动力总成产生旋转扭矩，通过联轴器传递至传动轴，由于传动轴与定阀之间是花键配合方式，因此定阀也随之转动，由于钻头直接与定阀下端相连，进而驱动钻头转动破岩；钻井液经过容积式动力总成后，经旁通孔进入传动轴，然后到达定阀内部，初始状态时，腔室A与腔室B连通，腔室D与腔室E连通，腔室C与腔室F经过低压孔与钻头连通，此时钻井液经过高压孔先进入腔室B与腔室D，然后进入腔室A与腔室E，此时腔室A与腔室E是高压腔，而腔室C与腔室F是低压腔，在高压钻井液的作用下，动阀开始顺时针快速转动，在这个过程中，腔室A与腔室E空间逐渐增大，腔室C与腔室F空间逐渐减小，且腔室内的钻井液通过低压孔流到钻头，当动阀与定阀撞击时就会产生旋转振击力，并由定阀传递至钻头，与此同时，腔室A与腔室B间的流道关闭，腔室D与腔室E间的流道关闭，高压钻井液无法再次进入，并且腔室A与腔室E经过低压孔与钻头连通，腔室A与腔室E转化为低压腔，而腔室B与腔室C连通，腔室D与腔室F连通，腔室C与腔室F转化为高压腔，随着钻井液的进入，动阀就会逆时针转动，随着动阀的转动，腔室A与腔室E空间逐渐减小，腔室内的钻井液经低压孔流到钻头，直至与定阀撞击，动阀逆时针撞击定阀时，腔室A与腔室B再次连通，腔室D与腔室E再次连通，腔室C与腔室F经过低压孔与钻头连通，高压钻井液即可驱动动阀顺时针撞击定阀，从而完成一次旋转振击的过程，连接腔室C与腔室F的低压孔的设计位置根据计算进行了专门优化设计，确保动阀逆时针回转撞击定阀产生的振击力较小，因为井底钻头是顺时针旋转切削岩石，因此逆时针方向的振击力对于提高钻头切削能量作用不大，而只需要顺时针方向的振击力。上述过程往复循环，就对钻头形成了旋转振击效应，进而提高了钻头切削岩石的能量。当井底钻头发生轴向振动时，由于钻头与定阀连接，因此钻头处的轴向振动经定阀传递至弹簧，弹簧压缩变形就能吸收钻头的轴向振动冲击力，当轴向振动减弱时，弹簧恢复伸长，由于弹簧缓冲了钻头处的轴向冲击力，因此确保了钻头与地层的平稳接触，保持了钻头上钻压的稳定，避免了冲击力对钻头切削齿的损坏，达到了保护钻头延长使用寿命的目的；由于动阀安装在定阀外部，定阀在轴向振动作用下发生轴向位移时，动阀也会随着一起移动，在轴向移动过程中，动阀与定阀仍然会在钻井液的作用下产生旋转振击效应，即恒压式旋转振击马达在减振保持钻头钻压稳定的同时又能增加钻头破岩能量，这是常规技术难以实现的。若动阀或定阀失效不能产生旋转振击效应，则钻井液无法经过动阀和定阀达到井底钻头，随着钻井液压力的不断升高，当压力超过安全阀的设定值时，安全阀就会打开，使钻井液直接流到钻头，而不影响钻井液的循环。恒压式旋转振击马达既能将液动能转化为机械能，产生旋转振击效应，提高钻头旋转破岩的切削力，又能吸收缓冲钻头的轴向振动，防止轴向冲击力对钻头的损坏，并保持钻头破岩钻压的平稳，这对于国内现有技 术装备条件下进一步提高深井、超深井的钻井效率具有重要意义。现场试验结果表明，利用恒压式旋转振击马达能够平均提高钻井效率38.2%-67.9%，节省钻井周期8-15天，且钻井质量符合设计标准，实现了低能耗、高效率的钻井目的。The principle of the utility model is that: chamber A, chamber B, chamber C, chamber D, chamber E, chamber F (chamber A, chamber B. Chamber C is located in one half-chamber, and chamber D, chamber E, and chamber F are located in the other half-chamber, with the same structure and working principle). Under the action of drilling fluid, the volumetric powertrain generates rotational torque, The transmission is transmitted to the transmission shaft through the coupling. Since the transmission shaft and the fixed valve are splined, the fixed valve also rotates accordingly. Since the drill bit is directly connected to the lower end of the fixed valve, the drill bit is driven to rotate and break rocks; the drilling fluid passes through After the volumetric powertrain, it enters the transmission shaft through the bypass hole, and then reaches the interior of the fixed valve. In the initial state, chamber A communicates with chamber B, chamber D communicates with chamber E, chamber C communicates with chamber F It communicates with the drill bit through the low-pressure hole. At this time, the drilling fluid first enters chamber B and chamber D through the high-pressure hole, and then enters chamber A and chamber E. At this time, chamber A and chamber E are high-pressure chambers, and chamber C and chamber F are low-pressure chambers. Under the action of high-pressure drilling fluid, the movable valve starts to rotate rapidly clockwise. During this process, the space between chamber A and chamber E gradually increases, and the space between chamber C and chamber F gradually decreases, and the drilling fluid in the chamber flows to the drill bit through the low-pressure hole. When the movable valve collides with the fixed valve, a rotating vibration force will be generated, which will be transmitted to the drill bit by the fixed valve. At the same time, the chamber A and the cavity The flow channel between chamber B is closed, the flow channel between chamber D and chamber E is closed, high-pressure drilling fluid cannot enter again, and chamber A and chamber E communicate with the drill bit through the low-pressure hole, chamber A and chamber E It is transformed into a low-pressure chamber, while chamber B is connected with chamber C, chamber D is connected with chamber F, and chamber C and chamber F are transformed into a high-pressure chamber. With the entry of drilling fluid, the movable valve will rotate counterclockwise , with the rotation of the movable valve, the space between chamber A and chamber E gradually decreases, and the drilling fluid in the chamber flows to the drill bit through the low-pressure hole until it hits the fixed valve. When the movable valve hits the fixed valve counterclockwise, the chamber A It is connected to chamber B again, chamber D is connected to chamber E again, chamber C and chamber F are connected to the drill bit through the low-pressure hole, and the high-pressure drilling fluid can drive the moving valve to hit the fixed valve clockwise, thus completing a rotary vibration During the hammering process, the design position of the low-pressure hole connecting chamber C and chamber F is specially optimized according to calculations to ensure that the vibration force generated by the counterclockwise rotation of the movable valve and the impact on the fixed valve is small, because the bottom hole drill bit is clockwise The rotation cuts the rock, so the vibration force in the counterclockwise direction has little effect on increasing the cutting energy of the drill bit, and only the vibration force in the clockwise direction is needed. The reciprocating cycle of the above process forms a rotary vibration effect on the drill bit, thereby increasing the energy of the drill bit to cut rock. When the bottom hole drill bit has axial vibration, because the drill bit is connected to the fixed valve, the axial vibration at the drill bit is transmitted to the spring through the fixed valve, and the compression deformation of the spring can absorb the axial vibration impact force of the drill bit. When the axial vibration weakens At this time, the spring recovers to elongate, because the spring buffers the axial impact force at the drill bit, thus ensuring the smooth contact between the drill bit and the formation, maintaining the stability of the drilling pressure on the drill bit, and avoiding the damage of the impact force to the cutting teeth of the drill bit. In order to protect the drill bit and prolong its service life; since the movable valve is installed outside the fixed valve, when the fixed valve undergoes axial displacement under the action of axial vibration, the movable valve will also move along with it. During the axial movement, the movable valve The fixed valve will still produce the rotary vibration effect under the action of the drilling fluid, that is, the constant pressure rotary vibration motor can reduce the vibration and maintain the stability of the drilling pressure of the drill bit while increasing the rock-breaking energy of the drill bit, which is difficult to achieve with conventional technology . If the failure of the movable valve or the fixed valve does not produce the rotating vibration effect, the drilling fluid cannot pass through the movable valve and the fixed valve to reach the bottom hole drill bit. As the pressure of the drilling fluid continues to rise, when the pressure exceeds the set value of the safety valve, The safety valve will open, allowing the drilling fluid to flow directly to the drill bit without affecting the circulation of the drilling fluid. The constant pressure rotary vibrating motor can not only convert the hydraulic kinetic energy into mechanical energy, produce a rotary vibrating effect, improve the cutting force of the drill bit for rock breaking, but also absorb and buffer the axial vibration of the drill bit to prevent the damage to the drill bit by the axial impact force , and keep the rock-breaking pressure of the drill bit stable, which is of great significance for further improving the drilling efficiency of deep wells and ultra-deep wells under the conditions of existing domestic technical equipment. Field test results show that the use of constant pressure rotary vibrating motors can increase the drilling efficiency by 38.2%-67.9% on average, save the drilling cycle by 8-15 days, and the drilling quality meets the design standards, achieving the purpose of low energy consumption and high efficiency drilling.
同时，恒压式旋转振击马达还具有结构设计简单、性能可靠、操作方便等特点。At the same time, the constant pressure rotary vibration motor also has the characteristics of simple structure design, reliable performance and convenient operation.
附图说明Description of drawings
图1是依据本实用新型所提出的恒压式旋转振击马达结构示意图。Fig. 1 is a schematic structural diagram of a constant pressure rotary vibrating motor proposed according to the utility model.
图2是依据本实用新型所提出的恒压式旋转振击马达A-A截面示意图。Fig. 2 is a schematic cross-sectional view of A-A of the constant pressure rotary vibrating motor proposed according to the utility model.
图3是依据本实用新型所提出的恒压式旋转振击马达B-B截面示意图。Fig. 3 is a schematic cross-sectional view of B-B of the constant pressure rotary vibrating motor proposed according to the utility model.
附图标记：1-外壳体，2-容积式动力总成，3-联轴器，4-旁通孔，5-上扶正轴承，6-传动轴，7-推力轴承，8-弹簧，9-花键，10-第一密封装置，11-定阀，12-安全阀，13-动阀，14-第二密封装置，15-下扶正轴承，16-高压孔，17-低压孔，18-腔体A，19-腔体B，20-腔体C，21-腔体D，22-腔体E，23-腔体F。Reference signs: 1-outer shell, 2-volume powertrain, 3-coupling, 4-bypass hole, 5-upper centering bearing, 6-transmission shaft, 7-thrust bearing, 8-spring, 9 -spline, 10-first sealing device, 11-fixed valve, 12-safety valve, 13-moving valve, 14-second sealing device, 15-lower centering bearing, 16-high pressure hole, 17-low pressure hole, 18 - Chamber A, 19 - Chamber B, 20 - Chamber C, 21 - Chamber D, 22 - Chamber E, 23 - Chamber F.
具体实施方式detailed description
下面结合附图来详细描述本实用新型。Describe the utility model in detail below in conjunction with accompanying drawing.
如图1，恒压式旋转振击马达主要外壳体1、容积式动力总成2、联轴器3、旁通孔4、上扶正轴承5、传动轴6、推力轴承7、弹簧8、花键9、第一密封装置10、定阀11、安全阀12、动阀13、第二密封装置14、下扶正轴承15、高压孔16、低压孔17组成。容积式动力总成2与传动轴6之间安装联轴器3，传动轴6上部加工旁通孔4，传动轴6与外壳体1内壁之间安装上扶正轴承5，推力轴承7安装在上扶正轴承5下部，推力轴承7与定阀11之间安装弹簧8，传动轴6下部花键9，并与定阀11内壁花键槽构成花键配合。定阀11外壁与外壳体1内壁之间安装第一密封装置10、第二密封装置14，动阀13安装在定阀11外部，定阀11内部安装安全阀12，定阀11下部与外壳体1下部之间安装下扶正轴承15，定阀11上部加工高压孔16，下部加工低压孔17。As shown in Figure 1, the main shell of the constant pressure rotary vibrating motor is 1, the volumetric power assembly 2, the coupling 3, the bypass hole 4, the upper righting bearing 5, the transmission shaft 6, the thrust bearing 7, the spring 8, the flower Key 9, first sealing device 10, fixed valve 11, safety valve 12, moving valve 13, second sealing device 14, lower righting bearing 15, high pressure hole 16, low pressure hole 17. A shaft coupling 3 is installed between the volumetric power assembly 2 and the transmission shaft 6, a bypass hole 4 is processed on the upper part of the transmission shaft 6, a centralizing bearing 5 is installed between the transmission shaft 6 and the inner wall of the outer casing 1, and a thrust bearing 7 is installed on the The righting bearing 5 bottoms, spring 8 is installed between the thrust bearing 7 and the fixed valve 11, and the spline 9 at the bottom of the transmission shaft 6 forms a spline fit with the spline groove of the fixed valve 11 inner wall. The first sealing device 10 and the second sealing device 14 are installed between the outer wall of the fixed valve 11 and the inner wall of the outer shell 1, the movable valve 13 is installed outside the fixed valve 11, and the safety valve 12 is installed inside the fixed valve 11, and the lower part of the fixed valve 11 is connected to the outer shell. 1 The lower central bearing 15 is installed between the lower parts, the upper part of the fixed valve 11 is processed with a high-pressure hole 16, and the lower part is processed with a low-pressure hole 17.
参照附图2和图3，定阀11、动阀13、外壳体1内壁之间分别形成腔室A18、腔室B19、腔室C20、腔室D21、腔室E22、腔室F23。定阀11外壁上开设有多条槽型通道，用于间歇性连通腔室A18与腔室B19、腔室B19与腔室C20，即腔室A18与腔室B19连通时，腔室B19与腔室C20不连通，但此时腔室C20通过低压孔17与钻头水眼连通。同理，腔室D21、腔室E22、腔室F23也同样通过槽型通道交替连通。Referring to accompanying drawings 2 and 3, a chamber A18, a chamber B19, a chamber C20, a chamber D21, a chamber E22 and a chamber F23 are respectively formed between the fixed valve 11, the movable valve 13 and the inner wall of the outer shell 1. The outer wall of the fixed valve 11 is provided with a plurality of groove-shaped passages for intermittently connecting the chamber A18 and the chamber B19, and the chamber B19 and the chamber C20, that is, when the chamber A18 and the chamber B19 are connected, the chamber B19 and the chamber The chamber C20 is not connected, but at this time the chamber C20 communicates with the water hole of the drill bit through the low-pressure hole 17 . Similarly, the chamber D21, the chamber E22, and the chamber F23 are also communicated alternately through grooved channels.
在钻井液作用下，容积式动力总成产生旋转扭矩，通过联轴器3传递至传动轴6，由于传动轴6与定阀11之间是花键配合方式，因此定阀11也随之转动，由于钻头直接与定阀11下端相连，进而驱动钻头转动破岩。钻井液经过容积式动力总成后，经旁通孔4进入传动轴6，然后到达定阀11内部。初始状态时，定阀11外壁上的槽型通道使得腔室A18与腔室B19连通，腔室D21与腔室E22连通，而且腔室C20与腔室F23经过低压孔17与钻头连通。此时钻井液经过高压孔16先进入腔室B19与腔室D21，然后进入腔室A18与腔室E22，此时腔室A18与腔室E22是高压腔，而腔室C20与腔室F23是低压腔。在高压钻井液的作用下，动阀13开始顺时针快速转动，在这个过程中，腔室A18与腔室E22空间逐渐增大，腔室C20与腔室F23空间逐渐减小，且腔室内的钻井液通过低压孔17流到钻头。当动阀13与定阀11撞击时就会产生旋转振击力，并由定阀11传递至钻头，与此同时，腔室A18与腔室B19间的流道关闭，腔室D21与腔室E22间的流道关闭，高压钻井液无法再次进入，并且腔室A18与腔室E22经过低压孔17与钻头连通，腔室A18与腔室E22转化为低压腔，而定阀11外壁上的槽型通道使得腔室B19与腔室C20连通，腔室D21与腔室F23连通，腔室C20与腔室F23转化为高压腔。随着钻井液的进入，动阀13就会逆时针转动，随着动阀13的转动，腔室A18与腔室E22空间逐渐减小，腔室内的钻井液经低压孔17流到钻头，直至动阀13与定阀11撞击，动阀13逆时针撞击定阀11时，腔室A18与腔室B19再次连通，腔室D21与腔室E22再次连通，腔室C20与腔室F23经过低压孔与钻头连通，高压钻井液即可驱动动阀顺时针撞击定阀，从而完成一次旋转振击的过程。连接腔室C20与腔室F23的低压孔的设计位置根据计算进行了专门优化设计，确保动阀13逆时针回转撞击定阀11产生的振击力较小，因为井底钻头是顺时针旋转切削岩石，因此逆时针方向的振击力对于提高钻头切削能量作用不大，而只需要顺时针方向的振击力。上述过程往复循环，就对钻头形成了旋转振击效应，进而提高了钻头切削岩石的能量。Under the action of drilling fluid, the volumetric powertrain generates rotational torque, which is transmitted to the transmission shaft 6 through the coupling 3. Since the transmission shaft 6 and the fixed valve 11 are splined, the fixed valve 11 also rotates accordingly. , because the drill bit directly links to each other with the lower end of the fixed valve 11, and then drives the drill bit to rotate and break the rock. After the drilling fluid passes through the volumetric power assembly, it enters the transmission shaft 6 through the bypass hole 4, and then reaches the interior of the fixed valve 11. In the initial state, the grooved channel on the outer wall of the fixed valve 11 makes the chamber A18 communicate with the chamber B19, the chamber D21 communicate with the chamber E22, and the chamber C20 communicate with the chamber F23 through the low-pressure hole 17 and the drill bit. At this time, the drilling fluid first enters chamber B19 and chamber D21 through the high-pressure hole 16, and then enters chamber A18 and chamber E22. At this time, chamber A18 and chamber E22 are high-pressure chambers, while chamber C20 and chamber F23 are chambers. low pressure chamber. Under the action of high-pressure drilling fluid, the movable valve 13 starts to rotate rapidly clockwise. During this process, the space between chamber A18 and chamber E22 gradually increases, and the space between chamber C20 and chamber F23 gradually decreases. Drilling fluid flows through the low pressure hole 17 to the drill bit. When the movable valve 13 collides with the fixed valve 11, a rotating vibration force will be generated, which will be transmitted to the drill bit by the fixed valve 11. At the same time, the flow path between the chamber A18 and the chamber B19 will be closed, and the chamber D21 will The flow path between E22 is closed, high-pressure drilling fluid cannot enter again, and chamber A18 and chamber E22 communicate with the drill bit through low-pressure hole 17, chamber A18 and chamber E22 are converted into low-pressure chambers, and the groove on the outer wall of fixed valve 11 The type channel makes chamber B19 communicate with chamber C20, chamber D21 communicate with chamber F23, and chamber C20 and chamber F23 are transformed into a high-pressure chamber. As the drilling fluid enters, the movable valve 13 will rotate counterclockwise. With the rotation of the movable valve 13, the space between the chamber A18 and the chamber E22 will gradually decrease, and the drilling fluid in the chamber will flow to the drill bit through the low-pressure hole 17 until The movable valve 13 collides with the fixed valve 11, and when the movable valve 13 hits the fixed valve 11 counterclockwise, the chamber A18 is connected to the chamber B19 again, the chamber D21 is connected to the chamber E22 again, and the chamber C20 and the chamber F23 pass through the low-pressure hole Connected with the drill bit, the high-pressure drilling fluid can drive the movable valve to hit the fixed valve clockwise, thus completing a rotary vibration process. The design position of the low-pressure hole connecting the chamber C20 and the chamber F23 is specially optimized according to the calculation to ensure that the vibration force generated by the counterclockwise rotation of the movable valve 13 and the impact on the fixed valve 11 is small, because the bottom hole drill bit rotates clockwise to cut Therefore, the vibration force in the counterclockwise direction has little effect on improving the cutting energy of the drill bit, and only the vibration force in the clockwise direction is needed. The reciprocating cycle of the above process forms a rotary vibration effect on the drill bit, thereby increasing the energy of the drill bit to cut rock.
当井底钻头发生轴向振动时，由于钻头与定阀11连接，因此钻头处的轴向振动经定阀传递至弹簧8，弹簧8压缩变形就能吸收钻头的轴向振动冲击力，当轴向振动减弱时，弹簧8恢复伸长，由于弹簧8缓冲了钻头处的轴向冲击力，因此确保了钻头与地层的平稳接触，保持了钻头上钻压的稳定，避免了冲击力对钻头切削齿的损坏，达到了保护钻头延长使用寿命的目的；由于动阀13安装在定阀11外部，定阀11在轴向振动作用下发生轴向位移时，动阀13也会随着一起移动，在轴向移动过程中，动阀13与定阀11仍然会在钻井液的作用下产生旋转振击效应，即恒压式旋转振击马达在减振保持钻头钻压稳定的同时又能增加钻头破岩能量，这是常规技术难以实现的。When the bottom hole drill bit vibrates axially, because the drill bit is connected to the fixed valve 11, the axial vibration at the drill bit is transmitted to the spring 8 through the fixed valve, and the spring 8 can absorb the axial vibration impact force of the drill bit when compressed and deformed. When the vibration weakens, the spring 8 resumes its elongation. Since the spring 8 buffers the axial impact force at the drill bit, it ensures the smooth contact between the drill bit and the formation, maintains the stability of the drilling pressure on the drill bit, and avoids the cutting of the drill bit by the impact force. The damage of the teeth has achieved the purpose of protecting the drill bit and prolonging the service life; since the movable valve 13 is installed outside the fixed valve 11, when the fixed valve 11 is axially displaced under the action of axial vibration, the movable valve 13 will also move along with it. During the axial movement, the movable valve 13 and the fixed valve 11 will still produce the rotary vibration effect under the action of the drilling fluid, that is, the constant pressure rotary vibration motor can reduce the vibration and keep the drilling pressure of the drill bit stable while increasing the Rock-breaking energy, which is difficult to achieve with conventional technology.
若动阀13或定阀11失效不能产生旋转振击效应，则钻井液无法经过动阀13和定阀11达到井底钻头，随着钻井液压力的不断升高，当压力超过安全阀12的设定值时，安全阀12就会打开，使钻井液直接流到钻头，而不影响钻井液的循环。恒压式旋转振击马达既能将液动能转化为机械能，产生旋转振击效应，提高钻头旋转破岩的切削力，又能吸收缓冲钻头的轴向振动，防止轴向冲击力对钻头的损坏，并保持钻头破岩钻压的平稳，这有利于在现有地面机泵条件下进一步提高深井、超深井的钻井效率。If the dynamic valve 13 or the fixed valve 11 fails to produce the rotating vibration effect, the drilling fluid cannot pass through the dynamic valve 13 and the fixed valve 11 to reach the bottom hole drill bit. When the value is set, the safety valve 12 will be opened, so that the drilling fluid can directly flow to the drill bit without affecting the circulation of the drilling fluid. The constant pressure rotary vibrating motor can not only convert the hydraulic kinetic energy into mechanical energy, produce a rotary vibrating effect, improve the cutting force of the drill bit for rock breaking, but also absorb and buffer the axial vibration of the drill bit to prevent the damage to the drill bit by the axial impact force , and keep the rock-breaking pressure of the drill bit stable, which is conducive to further improving the drilling efficiency of deep wells and ultra-deep wells under the existing ground pump conditions.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621428471.3UCN206530287U (en) | 2016-12-24 | 2016-12-24 | Constant pressure type rotates vibration screw motor |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621428471.3UCN206530287U (en) | 2016-12-24 | 2016-12-24 | Constant pressure type rotates vibration screw motor |
| Publication Number | Publication Date |
|---|---|
| CN206530287Utrue CN206530287U (en) | 2017-09-29 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621428471.3UActiveCN206530287U (en) | 2016-12-24 | 2016-12-24 | Constant pressure type rotates vibration screw motor |
| Country | Link |
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| CN (1) | CN206530287U (en) |
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| CN108240175A (en)* | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Constant pressure type rotates vibration screw motor |
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| CN108240175A (en)* | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Constant pressure type rotates vibration screw motor |
| CN108240175B (en)* | 2016-12-24 | 2024-05-03 | 中石化石油工程技术服务有限公司 | Constant-pressure rotary vibrating screw motor |
| CN108104712A (en)* | 2018-01-05 | 2018-06-01 | 曾卫林 | Backpulsing on-bladed well dynamic unit and backpulsing on-bladed mud motor |
| CN108104712B (en)* | 2018-01-05 | 2024-03-19 | 曾卫林 | Recoil type bladeless downhole power unit and recoil type bladeless downhole power drilling tool |
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| TR01 | Transfer of patent right | Effective date of registration:20250516 Address after:Room 1202, No. 22 Chaoyangmen North Street, Chaoyang District, Beijing, 100728 Patentee after:Sinopec Petroleum Engineering Technology Service Co.,Ltd. Country or region after:China Patentee after:Sinopec Shengli Petroleum Engineering Co., Ltd. Patentee after:Sinopec Shengli Petroleum Engineering Co., Ltd. Drilling Technology Research Institute Address before:100101 Beijing, Beichen West Road, No. 8 Beichen world center, block A, No. 703, No. Patentee before:SINOPEC OILFIELD SERVICE Corp. Country or region before:China Patentee before:Sinopec Shengli Petroleum Engineering Co., Ltd. Patentee before:Sinopec Shengli Petroleum Engineering Co., Ltd. Drilling Technology Research Institute | |
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