CN116856881B - Bridge plug with embedded plugging structure and bridge plug setting method thereof - Google Patents
Bridge plug with embedded plugging structure and bridge plug setting method thereof Download PDFInfo
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- CN116856881B CN116856881B CN202311126753.2A CN202311126753A CN116856881B CN 116856881 B CN116856881 B CN 116856881B CN 202311126753 A CN202311126753 A CN 202311126753A CN 116856881 B CN116856881 B CN 116856881B
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 93
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 93
- 238000003825 pressing Methods 0.000 claims abstract description 40
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 238000009826 distribution Methods 0.000 abstract description 5
- 239000002245 particle Substances 0.000 abstract description 4
- 230000000903 blocking effect Effects 0.000 description 41
- 238000007789 sealing Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/1208—Packers; Plugs characterised by the construction of the sealing or packing means
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Abstract
Description
技术领域Technical field
本发明涉及桥塞坐封技术领域，尤其是涉及一种内嵌式封堵结构桥塞及其桥塞坐封方法。The present invention relates to the technical field of bridge plug setting, and in particular to an embedded plug structure bridge plug and a bridge plug setting method thereof.
背景技术Background technique
在油田的勘探开采过程中需要一种临时性的封堵工艺，封堵当前的生产层，以便于对其他产层实施工艺，待工艺完成以后，解除临时封堵，建立生产层与井筒的流动通道，实现对油、气井的采油、采气生产。虽然桥塞的封堵技术在开发和改造的过程中得到了广泛的应用，但是现有技术桥塞中至少存在以下技术问题：In the process of oilfield exploration and production, a temporary plugging process is needed to block the current production layer so that the process can be implemented on other production layers. After the process is completed, the temporary blocking is released and the flow between the production layer and the wellbore is established. Channels to achieve oil and gas production from oil and gas wells. Although the plugging technology of bridge plugs has been widely used in the process of development and transformation, there are at least the following technical problems in the existing bridge plugs:
一是桥塞在坐封完成后的过程中存在封堵效果不稳定，并不能封堵当前的生产层，导致桥塞起不到封堵的作用，从而使得生产无法正常进行，这就需回收封堵效果不稳定的桥塞，耗费了工期和人力。First, the plugging effect of the bridge plug is unstable after the setting process is completed, and it cannot block the current production layer. As a result, the bridge plug cannot play a blocking role, so that production cannot proceed normally, which requires recycling. Bridge plugs with unstable sealing effects waste construction time and manpower.
二是在桥塞坐封完成以后，其生产工艺结束以后，常常等待可溶解桥塞溶解以后仍存在残余的固体颗粒，这时需要人工清理，这对施工的便利性有了很大的影响。Second, after the bridge plug is set and the production process is completed, residual solid particles often remain after the dissolvable bridge plug is dissolved. At this time, manual cleaning is required, which has a great impact on the convenience of construction.
发明内容Contents of the invention
本发明的目的是提供一种内嵌式封堵结构桥塞及其桥塞坐封方法，解决上述背景技术提出的问题。The purpose of the present invention is to provide an embedded plug structure bridge plug and a bridge plug setting method to solve the problems raised by the above background technology.
为实现上述目的，本发明提供了一种内嵌式封堵结构桥塞，包括中心管轴，中心管轴上从上到下依次设置有上压环、第一内嵌式封堵结构、一体式卡瓦压台、第二内嵌式封堵结构、下压环、定位锥套；In order to achieve the above object, the present invention provides a bridge plug with an embedded plugging structure, which includes a central tube shaft. The central tube shaft is provided with an upper pressure ring, a first embedded plugging structure, and an integrated plug in sequence from top to bottom. Type slip pressure platform, second embedded sealing structure, lower pressure ring, positioning cone sleeve;
第一内嵌式封堵结构包括若干立体错位分布设置的合金片，第一内嵌式封堵结构的最外层合金片外壁上设置有上卡瓦；The first embedded blocking structure includes a plurality of alloy sheets arranged in a three-dimensional staggered distribution, and an upper slip is provided on the outer wall of the outermost alloy sheet of the first embedded blocking structure;
第二内嵌式封堵结构包括若干立体错位分布设置的合金片，第二内嵌式封堵结构的最外层合金片外壁上设置有下卡瓦。The second embedded blocking structure includes a plurality of alloy sheets arranged in three-dimensional staggered distribution, and a lower slip is provided on the outer wall of the outermost alloy sheet of the second embedded blocking structure.
优选的，第一内嵌式封堵结构的合金片上端与上压环的下端连接。Preferably, the upper end of the alloy sheet of the first embedded blocking structure is connected to the lower end of the upper pressure ring.
优选的，第二内嵌式封堵结构的合金片下端与下压环的上端连接。Preferably, the lower end of the alloy sheet of the second embedded blocking structure is connected to the upper end of the pressing ring.
优选的，一体式卡瓦压台包括第一压台和第二压台，第一压台与第二压台上下对称设置。Preferably, the integrated slip press platform includes a first press platform and a second press platform, and the first press platform and the second press platform are arranged symmetrically up and down.
优选的，第一内嵌式封堵结构与第二内嵌式封堵结构上下对称设置，第一内嵌式封堵结构的合金片与第二内嵌式封堵结构的合金片结构相同。Preferably, the first embedded blocking structure and the second embedded blocking structure are arranged symmetrically up and down, and the alloy sheets of the first embedded blocking structure and the alloy sheets of the second embedded blocking structure have the same structure.
优选的，最外层合金片以内的合金片均设置有橡胶层。Preferably, the alloy sheets within the outermost alloy sheet are all provided with rubber layers.
优选的，第一压台与第二压台均为圆锥体。Preferably, both the first pressing platform and the second pressing platform are cones.
一种内嵌式封堵结构桥塞坐封方法，包括以下步骤：A method for setting bridge plugs with an embedded plugging structure, including the following steps:
在桥塞到达指定位置进行坐封，上压环受到轴向力的作用压力传导至第一内嵌式封堵结构，使第一内嵌式封堵结构下端最内层合金片与第一压台上端接触，第一压台上端挤压最内层合金片，最内层合金片通过一层层错位设置的合金片将力传导到最外层的合金片，最外层合金片向外挤压上卡瓦，第一内嵌式封堵结构受力向外运动；When the bridge plug reaches the designated position for setting, the upper pressure ring is acted upon by the axial force and the pressure is transmitted to the first embedded plugging structure, causing the innermost alloy sheet at the lower end of the first embedded plugging structure to contact the first pressure The top of the table is in contact, and the top of the first pressing table squeezes the innermost alloy sheet. The innermost alloy sheet conducts force to the outermost alloy sheet through the misaligned alloy sheets arranged layer by layer, and the outermost alloy sheet is squeezed outward. When the slips are pressed, the first embedded sealing structure moves outward due to force;
下压环受到轴向力的作用压力传导至第二内嵌式封堵结构，使第二内嵌式封堵结构上端最内层合金片与第二压台下端接触，第二压台下端挤压最内层合金片，最内层合金片通过一层层错位设置的合金片将力传导到最外层的合金片，最外层合金片向外挤压下卡瓦，第二内嵌式封堵结构受力向外运动；The lower pressure ring is subjected to the axial force and the pressure is transmitted to the second embedded plugging structure, causing the innermost alloy sheet at the upper end of the second embedded plugging structure to contact the lower end of the second pressure platform, and the lower end of the second pressure platform squeezes Press the innermost alloy sheet, and the innermost alloy sheet conducts the force to the outermost alloy sheet through the layers of staggered alloy sheets. The outermost alloy sheet squeezes the slips outward, and the second embedded type The blocking structure moves outward due to force;
直到一体式卡瓦压台包裹在第一内嵌式封堵结构和第二内嵌式封堵结构内时，桥塞坐封外壁，桥塞坐封完成。Until the integrated slip pressure platform is wrapped in the first embedded plugging structure and the second embedded plugging structure, the bridge plug is set on the outer wall, and the bridge plug is set on completion.
因此，本发明采用上述内嵌式封堵结构桥塞及其桥塞坐封方法，具有以下有益效果：Therefore, the present invention adopts the above-mentioned embedded blocking structure bridge plug and its bridge plug setting method, which has the following beneficial effects:
（1）本发明的桥塞通过内嵌式封堵结构能够加强封堵效果，立体交错设置的合金片层层挤压将力传导到卡瓦上，使内嵌式封堵结构受力向外运动，完成桥塞坐封，封堵稳定性更强。(1) The bridge plug of the present invention can enhance the blocking effect through the embedded plugging structure. The three-dimensionally staggered alloy sheets are extruded layer by layer to conduct force to the slips, so that the embedded plugging structure is stressed outward. Movement to complete the bridge plug setting, and the sealing stability is stronger.
（2）本发明的桥塞与传统的密封胶筒桥塞相比，合金片上使用的橡胶层远远少于密封胶筒的橡胶，因此桥塞溶解后残留的固体颗粒很少，无需人工清理，增加施工便捷性。(2) Compared with the traditional sealant barrel bridge plug, the bridge plug of the present invention uses far less rubber layer on the alloy sheet than the rubber of the sealant barrel. Therefore, there are very few solid particles remaining after the bridge plug is dissolved, and no manual cleaning is required. , increase the convenience of construction.
下面通过附图和实施例，对本发明的技术方案做进一步的详细描述。The technical solution of the present invention will be further described in detail below through the accompanying drawings and examples.
附图说明Description of the drawings
图1为本发明一种内嵌式封堵结构桥塞实施例的整体结构示意图；Figure 1 is a schematic diagram of the overall structure of an embodiment of an embedded plug structure bridge plug according to the present invention;
图2为本发明一种内嵌式封堵结构桥塞实施例的桥塞坐封后示意图；Figure 2 is a schematic diagram of the bridge plug after setting according to an embodiment of the embedded plug structure of the present invention;
图3为本发明一种内嵌式封堵结构桥塞实施例的第一内嵌式封堵结构俯视图；Figure 3 is a top view of the first embedded blocking structure of the bridge plug embodiment of the present invention;
图4为本发明一种内嵌式封堵结构桥塞实施例的第一内嵌式封堵结构侧视图；Figure 4 is a side view of the first embedded blocking structure bridge plug embodiment of the present invention;
图5为本发明一种内嵌式封堵结构桥塞实施例的一体式卡瓦压台侧视图。Figure 5 is a side view of the integrated slip pressing platform according to an embodiment of the embedded plug structure bridge plug of the present invention.
附图标记Reference signs
1、中心管轴；2、上压环；3、第一内嵌式封堵结构；4、第二内嵌式封堵结构；5、下压环；6、定位锥套；7、合金片；8、上卡瓦；9、下卡瓦；10、一体式卡瓦压台；11、第一压台；12、第二压台。1. Central tube shaft; 2. Upper pressure ring; 3. First embedded plugging structure; 4. Second embedded plugging structure; 5. Lower pressure ring; 6. Positioning cone sleeve; 7. Alloy sheet ; 8. Upper slip; 9. Lower slip; 10. Integrated slip press; 11. First press; 12. Second press.
具体实施方式Detailed ways
以下通过附图和实施例对本发明的技术方案作进一步说明。The technical solution of the present invention will be further described below through the drawings and examples.
除非另外定义，本发明使用的技术术语或者科学术语应当为本发明所属领域内具有一般技能的人士所理解的通常意义。本发明中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的组成部分。“包括”或者“包含”等类似的词语意指出现该词前面的元件或者物件涵盖出现在该词后面列举的元件或者物件及其等同，而不排除其他元件或者物件。术语“设置”、“安装”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。“上”、“下”、“左”、“右”等仅用于表示相对位置关系，当被描述对象的绝对位置改变后，则该相对位置关系也可能相应地改变。Unless otherwise defined, technical terms or scientific terms used in the present invention shall have the usual meaning understood by a person with ordinary skill in the field to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprising" mean that the elements or things appearing before the word include the elements or things listed after the word and their equivalents, without excluding other elements or things. The terms "setting", "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection. Connected, it can also be connected indirectly through an intermediary, or it can be an internal connection between two components. "Up", "down", "left", "right", etc. are only used to express relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
实施例Example
如图1所示，本发明所述的一种内嵌式封堵结构桥塞，包括中心管轴1，中心管轴1上从上到下依次设置有上压环2、第一内嵌式封堵结构3、一体式卡瓦压台10、第二内嵌式封堵结构4、下压环5、定位锥套6。上压环2、第一内嵌式封堵结构3、一体式卡瓦压台10、第二内嵌式封堵结构4、下压环5、定位锥套6均通过现有技术中的滑块滑槽与中心管轴1滑动连接。上压环2下端与第一内嵌式封堵结构3上端固定连接，下压环5上端与第二内嵌式封堵结构4下端固定连接。As shown in Figure 1, an embedded blocking structure bridge plug according to the present invention includes a central tube shaft 1. The central tube shaft 1 is provided with an upper pressure ring 2 and a first embedded type in sequence from top to bottom. Blocking structure 3, integrated slip pressure platform 10, second embedded blocking structure 4, lower pressure ring 5, and positioning cone sleeve 6. The upper pressure ring 2, the first embedded plugging structure 3, the integrated slip pressure platform 10, the second embedded plugging structure 4, the lower pressure ring 5, and the positioning cone sleeve 6 are all passed through the slide in the prior art. The block chute is slidingly connected to the central tube shaft 1. The lower end of the upper pressure ring 2 is fixedly connected to the upper end of the first embedded blocking structure 3, and the upper end of the lower pressure ring 5 is fixedly connected to the lower end of the second embedded blocking structure 4.
图3为本发明一种内嵌式封堵结构桥塞实施例的第一内嵌式封堵结构俯视图；图4为本发明一种内嵌式封堵结构桥塞实施例的第一内嵌式封堵结构侧视图。第一内嵌式封堵结构3包括若干立体错位分布设置的合金片7，第一内嵌式封堵结构3的最外层合金片7外壁上设置有上卡瓦8。第一内嵌式封堵结构3的合金片7上端与上压环2的下端连接。第二内嵌式封堵结构4包括若干立体错位分布设置的合金片7，第二内嵌式封堵结构4的最外层合金片7外壁上设置有下卡瓦9。第二内嵌式封堵结构4的合金片7下端与下压环5的上端连接。第一内嵌式封堵结构3与第二内嵌式封堵结构4上下对称设置，第一内嵌式封堵结构3的合金片7与第二内嵌式封堵结构4的合金片7结构相同。第一内嵌式封堵结构3与第二内嵌式封堵结构4的最内层合金片7与最外层合金片7之间，从内到外依次错位设置有多层合金片7。合金片7的两个侧面设置为从上到下向下倾斜的斜面结构。Figure 3 is a top view of the first embedded plugging structure of an embodiment of the embedded plugging structure bridge plug of the present invention; Figure 4 is a first embedded plugging structure bridge plug embodiment of the present invention. Side view of the sealing structure. The first embedded blocking structure 3 includes a plurality of alloy sheets 7 arranged in a three-dimensional offset distribution. The outermost alloy sheet 7 of the first embedded blocking structure 3 is provided with an upper slip 8 on the outer wall. The upper end of the alloy sheet 7 of the first embedded blocking structure 3 is connected to the lower end of the upper pressure ring 2 . The second embedded blocking structure 4 includes a plurality of alloy sheets 7 arranged in a three-dimensional offset distribution. The outermost alloy sheet 7 of the second embedded blocking structure 4 is provided with lower slips 9 on the outer wall. The lower end of the alloy sheet 7 of the second embedded blocking structure 4 is connected to the upper end of the pressing ring 5 . The first embedded blocking structure 3 and the second embedded blocking structure 4 are arranged symmetrically up and down. The alloy sheet 7 of the first embedded blocking structure 3 and the alloy sheet 7 of the second embedded blocking structure 4 The structure is the same. Between the innermost alloy sheet 7 and the outermost alloy sheet 7 of the first embedded blocking structure 3 and the second embedded blocking structure 4, multiple layers of alloy sheets 7 are disposed sequentially from the inside to the outside. The two sides of the alloy sheet 7 are arranged in an inclined plane structure that slopes downward from top to bottom.
图5为本发明一种内嵌式封堵结构桥塞实施例的一体式卡瓦压台侧视图。一体式卡瓦压台10内壁连接在中心管轴1上，其上下端内径紧贴中心管轴1，其最大外径的圆为整体桥塞最大外径相等。一体式卡瓦压台10与第一内嵌式封堵结构3下端最小内径和第二内嵌式封堵结构4上端最小内径之间留有一条缝隙。便于桥塞坐封时一体式卡瓦压台10可以给到内嵌式封堵结构合金片7横向力，促使合金片7向外扩张构成桥塞的封堵结构。一体式卡瓦压台10包括第一压台11和第二压台12，第一压台11与第二压台12上下对称设置。第一压台11与第二压台12均为圆锥体。Figure 5 is a side view of the integrated slip pressing platform according to an embodiment of the embedded plug structure bridge plug of the present invention. The inner wall of the integrated slip pressing platform 10 is connected to the central tube shaft 1, the inner diameters of its upper and lower ends are close to the central tube shaft 1, and the circle with its maximum outer diameter is equal to the maximum outer diameter of the integral bridge plug. There is a gap between the integrated slip pressing platform 10 and the minimum inner diameter of the lower end of the first embedded plugging structure 3 and the minimum inner diameter of the upper end of the second embedded plugging structure 4 . To facilitate the setting of the bridge plug, the integrated slip pressing platform 10 can give lateral force to the alloy sheet 7 of the embedded blocking structure, prompting the alloy sheet 7 to expand outward to form the blocking structure of the bridge plug. The integrated slip pressing platform 10 includes a first pressing platform 11 and a second pressing platform 12. The first pressing platform 11 and the second pressing platform 12 are arranged symmetrically up and down. Both the first pressing platform 11 and the second pressing platform 12 are cones.
第一内嵌式封堵结构3最外层合金片7以内的合金片7设置有橡胶层，第二内嵌式封堵结构4最外层合金片7以内的合金片7设置有橡胶层。橡胶层能够避免内嵌式结构运动使合金片7摩擦损失，同时加强了桥塞坐封完后的封堵效果。合金片7为具有高塑形的材料，保证其在桥塞运动过程中，合金片7不易发生断裂。The alloy sheets 7 within the outermost alloy sheet 7 of the first embedded blocking structure 3 are provided with a rubber layer, and the alloy sheets 7 within the outermost alloy sheet 7 of the second embedded blocking structure 4 are provided with a rubber layer. The rubber layer can prevent the friction loss of the alloy sheet 7 caused by the movement of the embedded structure, and at the same time enhances the sealing effect after the bridge plug is set. The alloy sheet 7 is a material with high plasticity, which ensures that the alloy sheet 7 is not easily broken during the movement of the bridge plug.
本发明所述的桥塞坐封方法为：The bridge plug setting method according to the present invention is:
在桥塞到达指定位置进行坐封，上压环2受到轴向力的作用压力传导至第一内嵌式封堵结构3，使第一内嵌式封堵结构3下端最内层合金片7与第一压台11上端接触，第一压台11上端挤压最内层合金片7，最内层合金片7通过一层层错位设置的合金片7将力传导到最外层的合金片7，最外层合金片7向外挤压上卡瓦8，第一内嵌式封堵结构3受力向外运动；When the bridge plug reaches the designated position for setting, the upper pressure ring 2 is acted upon by the axial force and the pressure is transmitted to the first embedded plugging structure 3, causing the innermost alloy sheet 7 at the lower end of the first embedded plugging structure 3. In contact with the upper end of the first pressing platform 11, the upper end of the first pressing platform 11 squeezes the innermost alloy sheet 7, and the innermost alloy sheet 7 conducts force to the outermost alloy sheet through the alloy sheets 7 disposed in layers. 7. The outermost alloy sheet 7 squeezes the upper slip 8 outward, and the first embedded blocking structure 3 is forced to move outward;
下压环5受到轴向力的作用压力传导至第二内嵌式封堵结构4，使第二内嵌式封堵结构4上端最内层合金片7与第二压台12下端接触，第二压台12下端挤压最内层合金片7，最内层合金片7通过一层层错位设置的合金片7将力传导到最外层的合金片7，最外层合金片7向外挤压下卡瓦9，第二内嵌式封堵结构4受力向外运动；直到一体式卡瓦压台10完全包裹在第一内嵌式封堵结构3和第二内嵌式封堵结构4内时，桥塞坐封外壁。至此，桥塞坐封完成。桥塞坐封完成后，最内层的合金片7被第一压台11、第二压台12挤压，最内层的合金片7一层一层挤压直到最外层合金片7，最外层合金片7不会被内层的合金片7顶起，一层层合金片7紧密贴合在一起，形成密封结构。图2为本发明一种内嵌式封堵结构桥塞实施例的桥塞坐封后示意图。The lower pressure ring 5 is subjected to the axial force and the pressure is transmitted to the second embedded plugging structure 4, causing the innermost alloy sheet 7 at the upper end of the second embedded plugging structure 4 to contact the lower end of the second pressure platform 12. The lower end of the second pressing platform 12 squeezes the innermost alloy sheet 7, and the innermost alloy sheet 7 conducts the force to the outermost alloy sheet 7 through the alloy sheets 7 disposed in a layer by layer, and the outermost alloy sheet 7 faces outward. When the slips 9 are squeezed, the second embedded plugging structure 4 is forced to move outward; until the integrated slip pressing platform 10 is completely wrapped in the first embedded plugging structure 3 and the second embedded plugging structure When inside structure 4, the bridge plug is set to seal the outer wall. At this point, the sealing of the bridge plug is completed. After the bridge plug setting is completed, the innermost alloy sheet 7 is squeezed by the first pressure table 11 and the second pressure table 12. The innermost alloy piece 7 is squeezed layer by layer until the outermost alloy piece 7 is pressed. The outermost alloy sheet 7 will not be lifted up by the inner alloy sheet 7 , and the layers of alloy sheets 7 are closely fitted together to form a sealed structure. Figure 2 is a schematic diagram of the bridge plug after setting according to an embodiment of the embedded plug structure of the present invention.
坐封结束后，桥塞的封堵效果并不取决于最外层合金片7的展开长度，而取决于错位立体合金片7展开的最小半径，作为可选择性的方案，可以增强靠内合金片7的长度，使得桥塞坐封后形成的封堵半径一致。After the setting is completed, the blocking effect of the bridge plug does not depend on the unfolded length of the outermost alloy sheet 7, but depends on the minimum radius of the dislocated three-dimensional alloy sheet 7. As an optional solution, the inner alloy can be enhanced The length of the piece 7 is such that the blocking radius formed after the bridge plug is set is consistent.
根据实际应用要求对桥塞的封堵可以进行调控，可以控制一体式卡瓦压台10的内径以及斜面长度来控制内嵌式封堵结构的展开封堵结构。同时也可以增加内嵌式封堵结构中的层数来控制桥塞坐封完成后封堵结构的半径。The sealing of the bridge plug can be adjusted according to actual application requirements, and the inner diameter and slope length of the integrated slip pressure platform 10 can be controlled to control the unfolded sealing structure of the embedded sealing structure. At the same time, the number of layers in the embedded plugging structure can also be increased to control the radius of the plugging structure after the bridge plug is set.
因此，本发明采用上述内嵌式封堵结构桥塞及其桥塞坐封方法，能够解决现有技术中封堵不稳定、可溶解桥塞溶解后仍有残余颗粒的技术难题以及桥塞的成本用料问题。Therefore, the present invention adopts the above-mentioned embedded plug structure bridge plug and its bridge plug setting method, which can solve the technical problems in the prior art of unstable plugging, residual particles after the dissolvable bridge plug is dissolved, and the problem of bridge plugs. Cost and material issues.
最后应说明的是：以上实施例仅用以说明本发明的技术方案而非对其进行限制，尽管参照较佳实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对本发明的技术方案进行修改或者等同替换，而这些修改或者等同替换亦不能使修改后的技术方案脱离本发明技术方案的精神和范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: The technical solution of the present invention may be modified or equivalently substituted, but these modifications or equivalent substitutions cannot cause the modified technical solution to depart from the spirit and scope of the technical solution of the present invention.
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