CN115949363A

Movatterモバイル変換

Info

Publication number: CN115949363A
Application number: CN202310089164.5A
Authority: CN
Inventors: 张欣悦; 张凯峰; 张岚
Original assignee: Jinzhou Qinghua Machinery Co ltd
Current assignee: Jinzhou Qinghua Machinery Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-04-11

Abstract

Translated fromChinese

一种便于无线测井仪定向的一体式开窗侧钻工具，包括依次同轴连接的空心铣锥、导斜器斜铁和坐封锚定装置，在铣锥上沿径向设有一个定位键，在坐封锚定装置的下锥形体内孔下端设有封头，其特征是：在封头上设有多个通水孔，所述通水孔为阶梯孔并在阶梯处形成环形的坐封卡沿，用于实现钻井液循环并在投入多个坐封球后实现坐封；在铣锥内对应定位键另一侧沿其轴向设有过球沟槽，以便于使用无线测井仪定向后投入坐封球进入该工具内实现坐封。有益效果是：既能满足采用无线测井仪进行定向时循环钻井液的要求，又能满足在完成定向后的坐封憋压要求；结构简单，便于加工制造，工作可靠，大大简化定向作业，缩短了定向时间，节约了可观的定向费用。

An integrated window sidetracking tool that facilitates the orientation of wireless logging tools, including hollow milling cones connected coaxially in sequence, inclined irons for deflectors and setting anchoring devices, and a positioning tool is arranged radially on the milling cones key, a head is provided at the lower end of the inner hole of the lower cone of the setting anchoring device, and the feature is that: there are a plurality of water holes on the head, and the water holes are stepped holes and form a ring at the step The setting card edge is used to realize the circulation of drilling fluid and realize setting after putting in multiple setting balls; the other side of the corresponding positioning key in the milling cone is provided with a ball passing groove along its axial direction to facilitate the use of wireless After the logging tool is oriented, the setting ball is put into the tool to realize setting. The beneficial effect is: it can not only meet the requirements of circulating drilling fluid when using wireless logging tools for orientation, but also meet the requirements of setting and holding pressure after orientation is completed; the structure is simple, easy to process and manufacture, reliable in operation, and greatly simplifies orientation operations. Orientation time is shortened and considerable orientation costs are saved.

Description

Translated fromChinese

便于无线测井仪定向的一体式开窗侧钻工具All-in-one windowed sidetracking tool for easy orientation of wireless logging tools

技术领域technical field

本发明属于修井工具，特别涉及一种便于无线测井仪定向的一体式开窗侧钻工具。The invention belongs to a workover tool, in particular to an integrated sidetracking tool for opening a window and facilitating the orientation of a wireless logging instrument.

背景技术Background technique

开窗侧钻工具包括用于在井内进行开窗侧钻的导斜器和铣锥。传统开窗侧钻工具的导斜器和铣锥是两套独立的工具，而一体式开窗侧钻工具就是将安装在传统导斜器斜铁上的送入器换成了可以进行开窗磨铣作业的铣锥，即将导斜器和铣锥组合在一起的开窗侧钻工具。Sidetracking tools include deflectors and milling cones for sidetracking in wells. The deflector and milling cone of the traditional sidetracking tool for window opening are two independent tools, while the integrated sidetracking tool for window opening is to replace the feeder installed on the inclined iron of the traditional deflector with a tool that can be used for window opening. Milling cones for milling operations, fenestration sidetracking tools that combine a deflector and a milling cone.

由于绝大多数侧钻井都需要定向，而对于需要定向的侧钻井，一体式开窗侧钻工具在下井前必须在铣锥上安装一个定位接头，借助该定位接头和陀螺仪来确定导斜器斜铁的斜面在井内的方位。该定位接头是由用于连接钻具和铣锥的接头主体，同轴嵌套在接头主体内的空心活塞体，沿径向插入到活塞体内的定位键，安装在空心活塞体上的两组密封圈，垂直分布在接头主体上的两个用于固定活塞体的固定螺栓，以及用于调整活塞体角度的专用套筒组成。Since most sidetracking wells require orientation, and for sidetracking wells that require orientation, the integrated window sidetracking tool must install a positioning joint on the milling cone before going downhole, and use the positioning joint and gyroscope to determine the deflector The orientation of the slope of the inclined iron in the well. The positioning joint is composed of a joint main body used to connect the drilling tool and the milling cone, a hollow piston body coaxially nested in the joint main body, a positioning key inserted into the piston body in the radial direction, and two sets of joints installed on the hollow piston body. It consists of a sealing ring, two fixing bolts vertically distributed on the main body of the joint for fixing the piston body, and a special sleeve for adjusting the angle of the piston body.

作业时，需要将定位接头旋紧在铣锥上再用专用套筒调整活塞体角度使定位键正对导斜器斜铁斜面中心线，然后旋紧固定螺栓使活塞体固定在接头主体内从而固定定位键。由于受到现场施工条件和人力限制，上述操作不仅费工费力，而且定向误差较大；此外下井前在井口还要用液压大钳将铣锥与定位接头加力旋紧，这样又使定位键与导斜器斜面的相对位置发生了改变，因此还需要矫正，既增加了作业成本，也降低了作业效率。During operation, it is necessary to tighten the positioning joint on the milling cone and then adjust the angle of the piston body with a special sleeve so that the positioning key is facing the centerline of the oblique iron slope of the deflector, and then tighten the fixing bolt to fix the piston body in the main body of the joint so that Fixed positioning keys. Due to on-site construction conditions and manpower limitations, the above operations are not only labor-intensive, but also have large orientation errors; in addition, hydraulic tongs must be used at the wellhead to tighten the milling cone and the positioning joint with force before going into the well, so that the positioning key and positioning joint can be tightened. The relative position of the slope of the deflector has changed, so it needs to be corrected, which not only increases the operation cost, but also reduces the operation efficiency.

为解决上述问题，CN206845130U公开了一种自定向一体式开窗侧钻工具，包括依次同轴连接的空心铣锥、导斜器斜铁和坐封锚定装置，其特殊之处是：在铣锥上沿径向固设有一个定位键，该定位键凸出铣锥内壁且与导斜器斜铁的斜面中心线对正；所述定位键与用于确定导斜器斜铁斜面方位的陀螺仪上的键槽相匹配。这种开窗侧钻工具下井到位后可以直接用测井车下陀螺仪定向，无需定位接头，工作可靠，既降低了材料成本和作业成本，也提高了作业效率。In order to solve the above problems, CN206845130U discloses a self-orientation integrated window sidetracking tool, which includes a hollow milling cone, a deflector inclined iron and a setting anchor device coaxially connected in sequence. A positioning key is fixed radially on the cone, which protrudes from the inner wall of the milling cone and aligns with the center line of the inclined plane of the inclined iron of the inclined guide; The keyway on the gyroscope matches. After the window sidetracking tool is put in place, it can be directly oriented by the gyroscope of the logging vehicle, without the need for positioning joints, and it works reliably. It not only reduces the material cost and operation cost, but also improves the operation efficiency.

由于陀螺仪为有线测井，不仅需要专用的测井车用电缆起下，而且测井准备和作业时间比较长，给侧钻施工带来诸多不便，随着技术进步，无线测井即随钻测井技术日臻完善，有线测井系统逐步被无线测井系统如MWD或LWD所取代，而无线测井系统MWD或LWD需要循环钻井液将测井参数传送到地面，因此用无线测井系统MWD或LWD为侧钻工具定向的前提条件是必须循环钻井液。Since the gyroscope is for wired logging, it not only needs a special logging vehicle to be lifted and lowered by a cable, but also takes a long time for logging preparation and operation, which brings a lot of inconvenience to the sidetracking construction. With the advancement of technology, wireless logging is The logging technology is becoming more and more perfect, and the wired logging system is gradually replaced by the wireless logging system such as MWD or LWD, and the wireless logging system MWD or LWD needs to circulate the drilling fluid to transmit the logging parameters to the ground, so the wireless logging system MWD Or the prerequisite for LWD to orient the sidetracking tool is that the drilling fluid must be circulated.

目前国内外普遍使用的液压固定式开窗侧钻工具有三种：第一种是预置球的开窗侧钻工具，此种开窗侧钻工具根本无法循环钻井液，如CN206845130U公开的自定向一体式开窗侧钻工具，由于该工具一旦循环钻井液就坐封，因此无法用无线测井系统定向；第二种是后投球的侧钻开窗工具，可以循环钻井液但必须投球才能实现坐封，如CN102364029A公开的一体式开窗侧钻工具，该侧钻工具若在钻具内放置了无线测井仪，投球就不能到位，所以这种侧钻工具就不能坐封。第三种是允许循环钻井液且不需要投球便可以坐封的一体式开窗侧钻工具，如CN210948558U公开的无线自定向液压一体式开窗侧钻工具，包括依次同轴连接的空心铣锥、导斜器斜铁和坐封锚定装置，在坐封锚定装置的下锥形体内孔下端水口处设有一个环形卡沿，在环形卡沿上方有由坐在环形卡沿外缘上的弹簧支撑的阀芯，所述的阀芯与所述的环形卡沿之间有设定的间隙允许钻井液循环，当钻井液排量达到或超过预定值时所述的间隙消失，即所述的阀芯压在环形卡沿上将水口堵死，实现憋压坐封。该侧钻工具虽然可以使用无线测井仪MWD或LWD定向，但由于其结构复杂，加工难度大且对井队控制钻井液排量的操作要求较高，因此其应用受到一定限制。There are three kinds of hydraulic fixed window sidetracking tools commonly used at home and abroad at present: the first is the window sidetracking tool with preset balls, this kind of window sidetracking tool cannot circulate drilling fluid at all, such as the self-orientation disclosed in CN206845130U The one-piece window sidetracking tool, because the tool will be set once the drilling fluid is circulated, it cannot be oriented with a wireless logging system; the second is the back-throwing sidetracking window tool, which can circulate the drilling fluid but must be thrown to achieve settling Seal, such as CN102364029A disclosed integrated windowing sidetracking tool, if this sidetracking tool has placed wireless logging instrument in drilling tool, throwing just can not put in place, so this sidetracking tool just can not set seal. The third is an integrated window sidetracking tool that allows circulating drilling fluid and can be set without throwing a ball, such as the wireless self-orienting hydraulic integrated window sidetracking tool disclosed in CN210948558U, which includes hollow milling cones connected coaxially in sequence , The inclined iron of the deflector and the setting anchor device, a ring-shaped edge is provided at the nozzle at the lower end of the inner hole of the lower taper of the setting anchor device, and there is a seat on the outer edge of the ring edge above the ring edge. There is a set gap between the valve core and the annular clip edge to allow the drilling fluid to circulate. When the drilling fluid displacement reaches or exceeds a predetermined value, the gap disappears, that is, the Said spool is pressed on the annular card edge to block the water port, so as to realize pressure-suppressed setting. Although the sidetracking tool can be oriented using the wireless logging tool MWD or LWD, its application is limited due to its complex structure, difficult processing and high operational requirements for the drilling team to control the drilling fluid displacement.

发明内容Contents of the invention

本发明所要解决的技术问题是要提供一种不仅能够采用无线测井仪MWD或LWD进行定向，而且定向后能够实现憋压坐封，结构简单，便于加工制造，工作可靠的便于无线测井仪定向的一体式开窗侧钻工具。The technical problem to be solved by the present invention is to provide a wireless well logging tool that can not only use the wireless logging tool MWD or LWD for orientation, but also can realize pressure-suppressed setting after orientation, has a simple structure, is easy to process and manufacture, and works reliably Directional one-piece sidetracking tool for fenestration.

为解决上述问题，本发明采用如下技术方案：In order to solve the above problems, the present invention adopts the following technical solutions:

一种便于无线测井仪定向的一体式开窗侧钻工具，包括依次同轴连接的空心铣锥、导斜器斜铁和坐封锚定装置，在铣锥上沿径向设有一个定位键，在坐封锚定装置的下锥形体内孔下端设有封头，其特殊之处是：在封头上设有多个通水孔，所述通水孔为阶梯孔并在阶梯处形成环形的坐封卡沿，用于实现钻井液循环并在投入多个坐封球后实现坐封；在铣锥内对应定位键另一侧沿其轴向设有过球沟槽，以便于使用无线测井仪定向后投入坐封球进入该工具内实现坐封。An integrated window sidetracking tool that facilitates the orientation of wireless logging tools, including hollow milling cones connected coaxially in sequence, inclined irons for deflectors and setting anchoring devices, and a positioning tool is arranged radially on the milling cones key, a head is provided at the lower end of the inner hole of the lower cone of the setting anchoring device, and its special feature is that there are multiple water holes on the head, the water holes are stepped holes and A ring-shaped setting card edge is formed to realize drilling fluid circulation and setting after putting in multiple setting balls; the other side of the corresponding positioning key in the milling cone is provided with a ball passing groove along its axial direction to facilitate After using the wireless logging tool for orientation, put the setting ball into the tool to realize setting.

作为进一步优选，在封头内端设有圆形凹槽，所述通水孔沿圆周方向均布在圆形凹槽内底部，以便于顺利坐封。As a further preference, a circular groove is provided at the inner end of the head, and the water holes are evenly distributed at the bottom of the circular groove along the circumferential direction, so as to facilitate the smooth setting.

作为进一步优选，所述坐封球的直径大于通水孔的小孔内径2mm，以便于从无线测井仪与钻具内孔之间的环形空间通过。As a further preference, the diameter of the setting ball is 2 mm larger than the inner diameter of the small hole of the water hole, so as to pass through the annular space between the wireless logging tool and the inner hole of the drilling tool.

作为进一步优选，多个通水孔的小孔截面积之和大于直径为15毫米的圆面积，从而避免循环钻井液时产生憋压。As a further preference, the sum of the cross-sectional areas of the small holes of the plurality of water holes is greater than the area of a circle with a diameter of 15 mm, so as to avoid pressure build-up when drilling fluid is circulated.

作为进一步优选，所述的定位键凸出铣锥内壁3毫米并与导斜器斜铁的斜面中心线对正；且定位键与所述无线测井仪上的键槽相匹配。As a further preference, the positioning key protrudes from the inner wall of the milling cone by 3 mm and is aligned with the center line of the inclined plane of the inclined iron of the deflector; and the positioning key matches the keyway on the wireless logging instrument.

作为进一步优选，所述铣锥内孔对应定位键处的一段孔径大于所述无线测井仪引子直径2毫米。As a further preference, the diameter of a section of the inner hole of the milling cone corresponding to the positioning key is 2 mm larger than the diameter of the introduction of the wireless logging tool.

本发明的有益效果是：The beneficial effects of the present invention are:

1、由于该开窗侧钻工具在封头上设有多个通水孔，所述通水孔为阶梯孔并在阶梯处形成环形的坐封卡沿，通过通水孔便可实现钻井液循环并在投入多个坐封球后实现坐封；因此当该工具定向完成后，从井口将多个坐封球投入钻具内并开泵循环，多个坐封球落到坐封卡沿上便可实现憋压，当憋压达到预定值时便可完成导斜器斜铁的坐封；这样既能满足采用无线测井仪MWD或LWD进行定向时循环钻井液的要求，又能满足在完成定向后的坐封憋压要求；结构简单，便于加工制造，工作可靠，大大简化定向作业，缩短了定向时间，节约了可观的定向费用。1. Since the window sidetracking tool is provided with a plurality of water holes on the head, the water holes are stepped holes and form a ring-shaped sealing edge at the steps, and the drilling fluid can be realized through the water holes. Circulation and setting is realized after putting in multiple setting balls; therefore, when the tool orientation is completed, put multiple setting balls into the drilling tool from the wellhead and start the pump circulation, and multiple setting balls fall to the edge of the setting card When the pressure reaches the predetermined value, the setting of the inclined iron of the deflector can be completed; this can not only meet the requirements of circulating drilling fluid when using the wireless logging tool MWD or LWD for orientation, but also meet the After the orientation is completed, the setting pressure is required; the structure is simple, easy to process and manufacture, and the work is reliable, which greatly simplifies the orientation operation, shortens the orientation time, and saves considerable orientation costs.

2、由于在铣锥内对应定位键另一侧沿其轴向设有过球沟槽，以便于使用无线测井仪定向后投入坐封球进入该工具内实现坐封；因此该工具可实现与无线测井仪同时下井，到达井内预定位置时便可直接循环钻井液开始定向和坐封，不仅省去了用测井车起下测井仪的作业，也避免了因起下测井仪造成附着在钻具内壁上的杂质脱落堆积形成堵塞，导致导斜器无法坐封；大大缩短了定向作业时间和建井周期，提高了导斜器坐封成功率。2. Since the other side of the corresponding positioning key in the milling cone is provided with a ball passing groove along its axial direction, it is convenient to put the setting ball into the tool to realize setting after using the wireless logging tool for orientation; therefore, the tool can realize Going into the well with the wireless logging tool at the same time, when reaching the predetermined position in the well, the drilling fluid can be directly circulated to start orientation and setting, which not only saves the work of lifting the logging tool with a logging truck, but also avoids It caused the impurities attached to the inner wall of the drilling tool to fall off and accumulate to form a blockage, which made the deflector unable to be set; the directional operation time and well construction period were greatly shortened, and the success rate of deflector setting was improved.

3、由于在封头上设有多个通水孔，从而使钻具内外钻井液连通，因此可以避免在起下该工具作业中由于压力激动或抽吸引起的误坐封，还可以避免钻井液杂质沉淀堵塞钻具而导致的导斜器无法坐封。3. Since there are multiple water holes on the head, so that the drilling fluid inside and outside the drilling tool is connected, it can avoid the false setting caused by the pressure excitation or suction during the lifting and lowering of the tool, and it can also avoid drilling The deflector cannot be set due to the precipitation of liquid impurities and the blockage of the drilling tool.

附图说明Description of drawings

图1为本发明的结构示意图。Fig. 1 is a structural schematic diagram of the present invention.

图2是图1的局部放大图。FIG. 2 is a partially enlarged view of FIG. 1 .

图3是图2的A-A剖视图。Fig. 3 is a cross-sectional view along line A-A of Fig. 2 .

图中：铣锥1，铣锥内孔101，过球沟槽102，环形凹槽2，弧形燕尾槽201，梯形槽202，铣锥头3，喷嘴孔301，导液管4，导斜器斜铁5，射流管6，缸套7，剪切螺钉8，径向卡瓦9，上锥形体10，限位管11，条形孔1101，密封圈12，下锥形体13，纵向卡瓦14，引鞋管15，进液孔1501，封头16，通水孔1601，圆形凹槽1602，定位块17，弧形卡沿1701，紧固螺钉18，定位螺钉19，定位键20。In the figure:milling cone 1, milling coneinner hole 101,ball passing groove 102,annular groove 2, arc-shaped dovetail groove 201,trapezoidal groove 202,milling cone head 3,nozzle hole 301, catheter 4, guide inclined Slantediron 5, jet tube 6,cylinder liner 7,shear screw 8,radial slip 9,upper cone 10,limit tube 11,strip hole 1101,sealing ring 12,lower cone 13,longitudinal clamp Tile 14,shoe guide pipe 15,liquid inlet hole 1501,head 16,water hole 1601,circular groove 1602,positioning block 17, arc-shaped card edge 1701,fastening screw 18, positioning screw 19,positioning key 20 .

具体实施方式Detailed ways

如图1-图3所示，本发明涉及的一种便于无线测井仪定向的液压导斜器，包括依次同轴连接的空心铣锥1、导斜器斜铁5和坐封锚定装置，在铣锥1上沿径向插入并焊接有一个定位键20，该定位键20凸出铣锥1内壁3毫米并与导斜器斜铁5的斜面中心线对正；所述定位键20与用于确定导斜器斜铁5斜面方位的无线测井仪上的键槽相匹配。所述铣锥中心的铣锥内孔101为由上至下依次缩径的阶梯孔，铣锥内孔101上端为用于连接钻具的连接螺孔，铣锥内孔101对应定位键20处的一段孔径大于所述无线测井仪引子直径2毫米。在铣锥内孔101内对应定位键20另一侧沿其轴向设有过球沟槽102，以便于使用无线测井仪定向后投入坐封球进入该工具内实现坐封。As shown in Figures 1-3, the present invention relates to a hydraulic deflector for facilitating the orientation of wireless logging tools, including ahollow milling cone 1, a deflector inclinediron 5 and a setting anchoring device coaxially connected in sequence , on themilling cone 1 radially inserted and welded with a positioningkey 20, thepositioning key 20 protrudes from the inner wall of themilling cone 1 by 3 millimeters and aligns with the center line of the slope of theinclined iron 5 of the deflector; thepositioning key 20 It is matched with the keyway on the wireless logging tool used to determine the slope orientation of theslope iron 5 of the deflector. The milling coneinner hole 101 in the center of the milling cone is a stepped hole whose diameter decreases sequentially from top to bottom. The upper end of the milling coneinner hole 101 is a connecting screw hole for connecting a drilling tool. The milling coneinner hole 101 corresponds to 20 positioning keys. The aperture of a section is 2mm larger than the diameter of the introduction of the wireless logging tool. On the other side of theinner hole 101 of the milling cone corresponding to thepositioning key 20, there is aball passing groove 102 along its axial direction, so that the setting ball can be put into the tool after orientation with the wireless logging tool to realize setting.

在导斜器斜铁5内设有连通铣锥内孔101与坐封锚定装置内腔的导液管4，在铣锥1下端固接有铣锥头3，在铣锥头3上设有与铣锥内孔101连通的喷嘴孔301，所述导液管4上端由导斜器斜铁5的斜面上部引出并插入焊接到所述喷嘴孔301内。In theinclined iron 5 of the deflector, there is a fluid guide tube 4 that communicates with theinner hole 101 of the milling cone and the inner cavity of the setting anchoring device. There is anozzle hole 301 communicating with the milling coneinner hole 101, and the upper end of the liquid guide pipe 4 is drawn out from the top of the slope of theinclined iron 5 of the deflector and inserted and welded into thenozzle hole 301.

所述铣锥1下部压在导斜器斜铁5的上部斜面上，在铣锥1下部沿圆周方向加工有环形凹槽2，环形凹槽2对应导斜器斜铁5一侧为一段里宽外窄的弧形燕尾槽201、其余大部分为里窄外宽的梯形槽202，在导斜器斜铁5的斜面上对应环形凹槽2处固设有定位块17，定位块17对应导斜器斜铁5的一侧为圆柱形并插入焊接在导斜器斜铁5上，在定位块17上设有与弧形燕尾槽201相配合的弧形卡沿1701，定位块17通过弧形卡沿1701卡入弧形燕尾槽201内，在定位块17与铣锥1之间设有紧固螺钉18。The lower part of themilling cone 1 is pressed on the upper inclined surface of theinclined iron 5 of the inclined guide, and the lower part of themilling cone 1 is processed with anannular groove 2 along the circumferential direction, and theannular groove 2 corresponds to one side of theinclined iron 5 of the inclined guide. Wide and narrow arc-shaped dovetail groove 201, and most of the rest aretrapezoidal grooves 202 that are narrow inside and wide outside.Positioning blocks 17 are fixed on the inclined surface of theinclined iron 5 of the deflector corresponding to theannular groove 2, and thepositioning blocks 17 correspond to One side of theinclined iron 5 of the inclined guide is cylindrical and inserted and welded on theinclined iron 5 of the inclined guide. Thepositioning block 17 is provided with an arc-shaped card edge 1701 matched with the arc-shaped dovetail groove 201, and thepositioning block 17 passes through the The arc-shaped clamping edge 1701 snaps into the arc-shaped dovetail groove 201 , and afastening screw 18 is provided between thepositioning block 17 and themilling cone 1 .

在导斜器斜铁5上端与铣锥1之间设有定位螺钉19，在铣锥1上对应定位螺钉19处沿径向设有副水孔，在定位螺钉19上设有与副水孔连通的盲孔，在导斜器斜铁5与铣锥1未脱开时所述的定位螺钉19将副水孔堵死，在导斜器斜铁5与铣锥1脱开时即定位螺钉19被剪断后，所述铣锥内孔101通过副水孔和盲孔与铣锥1外部导通，用于避免因铣锥的喷嘴孔301被地层或水泥封堵而导致的憋泵，确保开窗时可以加足钻压。A positioning screw 19 is arranged between the upper end of theinclined iron 5 of the deflector and themilling cone 1, and an auxiliary water hole is arranged radially at the corresponding positioning screw 19 on themilling cone 1, and an auxiliary water hole is arranged on the positioning screw 19. Connected blind hole, when theinclined iron 5 of the inclined guide is not disengaged from themilling cone 1, the auxiliary water hole is blocked by the set screw 19, and when theinclined iron 5 of the inclined guide is disengaged from themilling cone 1, the positioning screw is After 19 is cut off, theinner hole 101 of the milling cone is connected to the outside of themilling cone 1 through the auxiliary water hole and the blind hole, which is used to avoid the pump caused by thenozzle hole 301 of the milling cone being blocked by the formation or cement, ensuring When opening the window, the drilling pressure can be added enough.

所述的坐封锚定装置包括固接在导斜器斜铁5下端外缘的缸套7和插入并固定在导斜器斜铁5下端中心孔内的射流管6，该射流管6上端与所述导液管4下端相互插接，在缸套7内设有空心上锥形体10和下锥形体13，射流管6下端与上锥形体10的中心孔插接，在射流管6与上锥形体10之间以及在上、下锥形体与缸套7之间分别设有密封圈12；在上锥形体10外壁通过剪切螺钉8圆周均布连接有径向卡瓦9，在下锥形体13外壁通过剪切螺钉8圆周均布连接有纵向卡瓦14，所述径向卡瓦9和纵向卡瓦14在上锥形体10和下锥形体13的推动下可由缸套7外壁伸出，在下锥形体13的中心孔内设有限位管11，限位管11上端与上锥形体10通过粗牙螺纹连接，限位管11与下锥形体13通过细牙锯齿形螺纹连接且限位管11上的细牙锯齿形螺纹牙尖朝下，在限位管11上对应下锥形体13处圆周均布有沿纵向布置的条形孔1101；在缸套7下端通过螺纹连接有引鞋管15，在引鞋管15下端的堵头上沿径向设有与其内孔连通的进液孔1501。The setting and anchoring device includes acylinder liner 7 fixed on the outer edge of the lower end of theoblique iron 5 of the oblique guide and a jet tube 6 inserted and fixed in the center hole of the lower end of theoblique iron 5 of the oblique guide. Interconnect with the lower end of the catheter tube 4, a hollowupper cone 10 and alower cone 13 are provided in thecylinder sleeve 7, the lower end of the jet tube 6 is plugged into the center hole of theupper cone 10, and the jet tube 6 and theSealing rings 12 are provided between theupper cones 10 and between the upper and lower cones and thecylinder liner 7;radial slips 9 are evenly distributed on the outer wall of theupper cone 10 throughshear screws 8, and on the lower cone The outer wall of theshape body 13 is connected withlongitudinal slips 14 evenly distributed on the circumference through theshear screws 8, and theradial slips 9 and thelongitudinal slips 14 can protrude from the outer wall of thecylinder liner 7 under the push of theupper cone body 10 and thelower cone body 13 , alimit tube 11 is provided in the center hole of the lowerconical body 13, the upper end of thelimit tube 11 is connected with the upperconical body 10 through a coarse thread, and thelimit tube 11 is connected with the lowerconical body 13 through a fine-tooth zigzag thread and the position is limited The fine-toothed zigzag threads on thetube 11 face downward, andstrip holes 1101 arranged longitudinally are evenly distributed on the circumference of thelimit tube 11 corresponding to thelower cone 13; Thetube 15 is radially provided with aliquid inlet hole 1501 communicating with the inner hole on the plug at the lower end of theshoe guiding tube 15 .

在所述下锥形体5内孔下端固定连接有封头16，在封头16上设有多个通水孔1601，所述通水孔1601为阶梯孔并在阶梯处形成环形的坐封卡沿，用于实现钻井液循环并在投入多个坐封球后实现坐封；在封头16内端设有圆形凹槽1602，所述通水孔1601沿圆周方向均布在圆形凹槽1602内底部，以便于顺利坐封。Ahead 16 is fixedly connected to the lower end of the inner hole of thelower cone body 5, and a plurality ofwater holes 1601 are arranged on thehead 16. Thewater holes 1601 are stepped holes and form an annular setting clip at the step. Along, it is used to realize drilling fluid circulation and setting after putting in multiple setting balls; there is acircular groove 1602 at the inner end of thehead 16, and thewater holes 1601 are evenly distributed in the circular groove along the circumferential direction. The inner bottom of thegroove 1602 is convenient for setting the seal smoothly.

多个通水孔1601的小孔截面积之和大于直径为15毫米的圆面积，从而避免循环钻井液时憋压。所述坐封球的直径大于通水孔1601下部的小孔内径2mm，以便于从无线测井仪与钻具内孔之间的环形空间通过。The sum of the cross-sectional areas of the small holes of the plurality ofwater holes 1601 is greater than the area of a circle with a diameter of 15 mm, so as to avoid pressure holding when drilling fluid is circulated. The diameter of the setting ball is 2mm larger than the inner diameter of the small hole in the lower part of thewater hole 1601, so as to pass through the annular space between the wireless logging tool and the inner hole of the drilling tool.

工作时，将该工具通过铣锥1与无磁钻铤连接，将无线测井仪即MWD或LWD安放在无磁钻铤内，无线测井仪在自身重力作用下到达铣锥1内腔，当无线测井仪引子经过定位键20继续下行时，由于受到铣锥内孔101尺寸和定位键20限制以及自身重力作用，迫使MWD或LWD笔尖引导自身键槽坐在定位键20上，然后将无磁钻铤与钻具连接并通过钻具将该工具下到井下预定位置，开泵循环钻井液，根据MWD或LWD测量的数据通过旋转钻具将导斜器斜铁12的斜面方位角调整到设计的方位，便完成了导斜器斜铁定向工作。When working, the tool is connected to the non-magnetic drill collar through the millingcone 1, and the wireless logging tool, MWD or LWD, is placed in the non-magnetic drill collar, and the wireless logging tool reaches the inner cavity of themilling cone 1 under its own gravity. When the introduction of the wireless well logging tool passes thepositioning key 20 and continues to descend, due to the limitation of the size of the milling coneinner hole 101 and thepositioning key 20 and its own gravity, the MWD or LWD nib is forced to guide its own keyway to sit on thepositioning key 20, and then no The magnetic drill collar is connected with the drilling tool and the tool is lowered to the predetermined position in the downhole through the drilling tool, the pump is turned on to circulate the drilling fluid, and the azimuth angle of the inclined plane of thedeflection guide iron 12 is adjusted to The orientation of the inclined iron of the inclined guide has been completed.

定向完毕后，向钻具内投放多个坐封球并连接上方钻杆开泵，坐封球投入的数量大于通水孔1601的数量，钻井液携带坐封球依次通过钻具内孔、无线测井仪与无磁钻铤之间的环形空间、铣锥内孔、铣锥内的过球沟槽102、导液管4、射流管6、上锥形体10内孔和限位管11内孔，最后落入圆形凹槽1602内并分别卡在每个通水孔1601内的坐封卡沿上，从而将下锥形体下端封头16的多个通水孔1601封闭，即将循环通道堵死。因此高压钻井液最终通过条形孔1101进入上、下锥形体之间。当上、下锥形体之间充满钻井液时，由于限位管上均布有条形孔而具有一定的弹性，钻井液便会推动上锥形体10并带动限位管11使其与下锥形体13发生“滑扣”现象，同时上、下锥形体将剪切螺钉8剪断并迫使径向卡瓦9和纵向卡瓦14卡到井壁上，实现坐封。After the orientation is completed, put multiple setting balls into the drilling tool and connect the upper drill pipe to start the pump. The number of setting balls put in is greater than the number ofwater holes 1601, and the drilling fluid carries the setting balls through the inner hole of the drilling tool, wireless The annular space between the logging tool and the non-magnetic drill collar, the inner hole of the milling cone, theball passing groove 102 in the milling cone, the liquid guide tube 4, the jet tube 6, the inner hole of theupper cone 10 and thelimit tube 11 holes, and finally fall into thecircular groove 1602 and are respectively stuck on the setting card edge in eachwater hole 1601, thereby closing themultiple water holes 1601 of thelower end head 16 of the lower cone, that is, the circulation channel blocked. Therefore, the high-pressure drilling fluid finally enters between the upper and lower cones through thestrip hole 1101 . When the upper and lower cones are filled with drilling fluid, the drilling fluid will push theupper cone 10 and drive the limitingtube 11 to make it contact with the lower cone due to the strip holes evenly distributed on the limiting tube and have certain elasticity. The "slip buckle" phenomenon occurs in thebody 13, and at the same time, the upper and lower cones cut off theshear screw 8 and force the radial slips 9 andlongitudinal slips 14 to the well wall to realize setting.

然后正转钻具，通过铣锥1将紧固螺钉18和定位螺钉19剪断，从而打开铣锥副水孔，使定位块17从弧形燕尾槽201中旋出，继续旋转钻具，导液管4在喷嘴孔301出口处被拧断，从而使喷嘴孔301自然形成铣锥喷嘴，此时导斜器斜铁5和铣锥1完全脱开，这时便可开泵循环钻井液，旋转钻具并施加钻压进行开窗侧钻。开窗过程中，一旦铣锥喷嘴孔301被地层或水泥憋堵，通过铣锥副水孔便会释放一部分高压钻井液，从而避免了因憋压而引起的憋泵。Then rotate the drilling tool forward, cut off thefastening screw 18 and the positioning screw 19 through the millingcone 1, thereby opening the auxiliary water hole of the milling cone, so that thepositioning block 17 is unscrewed from the arc-shapeddovetail groove 201, and the drilling tool is continued to be rotated to guide the fluid The pipe 4 is twisted off at the outlet of thenozzle hole 301, so that thenozzle hole 301 naturally forms a milling cone nozzle. At this time, theinclined iron 5 of the deflector and themilling cone 1 are completely disengaged. At this time, the pump can be turned on to circulate the drilling fluid and rotate Drilling tools and applying drilling pressure to carry out window sidetracking. During the window opening process, once thenozzle hole 301 of the milling cone is blocked by the formation or cement, a part of high-pressure drilling fluid will be released through the secondary water hole of the milling cone, thereby avoiding the suffocation of the pump caused by the pressure.

尽管本发明的实施方案已公开如上，但其并不仅仅限于说明书和实施方式中所列运用，它完全可以被适用于各种适合本发明的领域，对于熟悉本领域的人员而言，可容易地实现另外的修改，因此在不背离权利要求及等同范围所限定的一般概念下，本发明并不限于特定的细节和这里示出与描述的图例。Although the embodiment of the present invention has been disclosed as above, it is not limited to the use listed in the specification and implementation, it can be applied to various fields suitable for the present invention, and it can be easily understood by those skilled in the art Therefore, the invention is not limited to the specific details and examples shown and described herein without departing from the general concept defined by the claims and their equivalents.

Claims

1. The utility model provides a sidetracking instrument of windowing of integral type convenient to wireless logging instrument is directional, includes that coaxial coupling's hollow milling awl, leading sloping device wedge and seat seal anchoring device in proper order are equipped with a navigation key on milling the awl along radially, are equipped with head, characterized by at the internal hole lower extreme of the lower toper of seat seal anchoring device: the end socket is provided with a plurality of water through holes, the water through holes are stepped holes, an annular setting clamping edge is formed at the step, and the water through holes are used for realizing circulation of drilling fluid and setting after a plurality of setting balls are thrown in; and a ball passing groove is formed in the milling cone along the axial direction of the milling cone corresponding to the other side of the positioning key, so that a wireless logging instrument can be used for orientation and then a setting ball is thrown into the tool to realize setting.

2. The integrated windowed sidetracking tool for facilitating orientation of a wireless logging tool of claim 1, wherein: the inner end of the seal head is provided with a circular groove, and the limber holes are uniformly distributed at the bottom in the circular groove along the circumferential direction so as to be convenient for smooth setting.

3. The integrated windowed sidetracking tool for facilitating orientation of a wireless logging tool of claim 1, wherein: the diameter of the setting ball is 2mm larger than the inner diameter of the small hole of the water through hole, so that the setting ball can conveniently pass through an annular space between the wireless logging instrument and the inner hole of the drilling tool.

4. An integrated windowed sidetracking tool for facilitating orientation of a wireless logging tool according to any one of claims 1-3, wherein: the sum of the sectional areas of the small holes of the plurality of water through holes is larger than the area of a circle with the diameter of 15 mm, so that the pressure building during the circulation of drilling fluid is avoided.

5. The integrated windowed sidetracking tool for facilitating orientation of a wireless logging tool of claim 1, wherein: the positioning key protrudes 3 mm from the inner wall of the milling cone and is aligned with the inclined plane center line of the inclined iron of the slope guider; and the positioning key is matched with the key slot on the wireless logging instrument.

6. The integrated windowed sidetracking tool for facilitating orientation of a wireless logging tool of claim 1 or 5, wherein: and the aperture of a section of the inner hole of the milling cone corresponding to the positioning key is 2mm larger than the diameter of the wireless logging instrument primer.