阅读说明：本技术 一种可钻式水眼 (Drillable water hole ) 是由 蒋海涛 郭超 周俊然 田晓勇 梁国红 左岳 董颖 梁红梅 于 2019-10-18 设计创作，主要内容包括：本发明涉及一种可钻式水眼,包括上部套体、陶瓷水眼、下部套体,所述上部套体、下部套体的外侧壁上均设有密封圈沟槽,所述陶瓷水眼为中空环形结构,且其纵切面为“凸”字型结构,所述上部套体、下部套体内侧壁上设有与所述陶瓷水眼结构相匹配的第一台阶、第二台阶,所述上部套体一端与下部套体一端紧密接触,且所述陶瓷水眼套设在所述上部套体与下部套体形成的腔体内,并通过第一台阶、第二台阶与所述陶瓷水眼的侧壁、底端进行限位。本发明的可钻式水眼既易钻除,又能耐磨。(The invention relates to a drillable water eye, which comprises an upper sleeve body, a ceramic water eye and a lower sleeve body, wherein the outer side walls of the upper sleeve body and the lower sleeve body are respectively provided with a sealing ring groove, the ceramic water eye is of a hollow annular structure, the longitudinal section of the ceramic water eye is of a convex structure, the inner side walls of the upper sleeve body and the lower sleeve body are provided with a first step and a second step which are matched with the ceramic water eye structure, one end of the upper sleeve body is tightly contacted with one end of the lower sleeve body, the ceramic water eye is sleeved in a cavity formed by the upper sleeve body and the lower sleeve body, and the ceramic water eye is limited with the side wall and the bottom end of the ceramic water eye through the first step and the second step. The drillable water hole is easy to drill and wear resistant.)

1. A drillable port, comprising: including the upper portion cover body, ceramic water eye, the lower part cover body, all be equipped with the sealing washer slot on the lateral wall of the upper portion cover body, the lower part cover body, ceramic water eye is cavity annular structure, and its vertical section is "protruding" style of calligraphy structure, be equipped with on the upper portion cover body, the internal lateral wall of lower part cover with first step, the second step of ceramic water eye structure assorted, the upper portion cover body one end and the lower part cover body one end in close contact with, just ceramic water eye cover is established the upper portion cover body is in with the cavity that the lower part cover body formed to through first step, second step with lateral wall, the bottom of ceramic water eye carry on spacingly.

2. A drillable port as defined in claim 1, wherein: the end of the lower sleeve body, which is in contact with the upper sleeve body, is provided with a groove, and a gasket can be placed in the groove.

3. A drillable port as defined in claim 1, wherein: the upper sleeve body is provided with a straight groove for installation at the non-contact end with the lower sleeve body.

4. A drillable port as defined in claim 1, wherein: the end surfaces of the non-contact ends of the lower sleeve body and the upper sleeve body are provided with a plurality of mounting holes.

5. A drillable port as defined in claim 1, wherein: and a sealing ring groove is also arranged on the inner side wall of the upper sleeve body.

6. A drillable port as defined in claim 1, wherein: and the outer side walls of the lower sleeve body and the upper sleeve body are respectively provided with a mounting thread.

7. A drillable port as defined in any one of claims 1 to 6, wherein: the upper sleeve body and the lower sleeve body are made of free-cutting copper alloy.

Technical Field

The invention belongs to the technical field of drilling equipment and tools, and particularly relates to a drillable water hole.

Background

The casing drilling is to connect the drill bit with the lower part of the casing and to drive the drill bit to drill by the torque transmitted by the casing. When the designed depth is drilled, the casing is left in the well for cementing. There are both retrievable and drillable drill bits for casing. The well drilling with the removable drill bit can be performed after the removable drill bit is removed before well cementation, the operation is more complicated, and the waste of time before well cementation easily affects the well cementation quality. After the drillable drill bit is used for drilling the well to reach the designed well depth, the drill bit is not taken for direct well cementation, and when the well cementation is finished, the next drill bit is directly used for drilling through the drillable drill bit and the cement plug for next drilling operation, so that the operation is convenient and reliable. The core part of the drillable drill bit is generally made of alloy easy to drill, but the water hole of the common drill bit is mostly made of hard alloy and is difficult to drill. Therefore, based on the problems, the drillable drill bit water hole which is easy to drill and remove and is wear-resistant is provided, and the drillable drill bit water hole has important practical significance.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a drillable drill water hole which is easy to drill and remove and is wear-resistant.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a can bore formula water eye, includes the upper portion cover body, ceramic water eye, the lower part cover body, all be equipped with the sealing washer slot on the lateral wall of the upper portion cover body, the lower part cover body, ceramic water eye is cavity annular structure, and its vertical section is "protruding" style of calligraphy structure, be equipped with on the upper portion cover body, the internal lateral wall of lower part cover with ceramic water eye structure assorted first step, second step, the upper portion cover body one end and the lower part cover body one end in close contact with, just ceramic water eye cover is established in the cavity that the upper portion cover body formed with the lower part cover body to through first step, second step with lateral wall, the bottom of ceramic water eye carry on spacingly.

Furthermore, a groove is formed in one end, in contact with the upper sleeve body, of the lower sleeve body, and a gasket can be placed in the groove.

Furthermore, a straight groove for installation is arranged on the non-contact end of the upper sleeve body and the lower sleeve body.

Furthermore, a plurality of mounting holes are formed in the end face of the non-contact end of the lower sleeve body and the upper sleeve body.

Furthermore, a sealing ring groove is also arranged on the inner side wall of the upper sleeve body.

Furthermore, the outer side walls of the lower sleeve body and the upper sleeve body are respectively provided with mounting threads.

Furthermore, the upper sleeve body and the lower sleeve body are made of free-cutting copper alloy.

The invention has the advantages and positive effects that:

1. the drillable water hole is easy to drill and remove and is wear-resistant; the upper sleeve body and the lower sleeve body are made of free-cutting copper alloy outside, and the free-cutting copper alloy is easy to drill and remove; the ceramic water hole is fixed inside, has high melting point, high hardness, high strength, wear resistance and good chemical corrosion resistance, but has large brittleness and poor impact resistance, and is easy to break when a drill bit is drilled out, so that the drill bit and other fragments are carried by the drilling fluid and return to the ground;

2. the drillable water hole is installed on a drill bit special for drillable casing drilling, when the drill bit drills to the designed well depth, the well is directly fixed, and then the conventional drilling drill bit is adopted to drill through the core part of the drillable casing drill bit and the drillable water hole, so that the next drilling construction can be carried out.

Drawings

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a cross-sectional view of a drillable port according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the configuration of the upper housing body of the drillable water-jet eye according to the embodiment of the present invention;

FIG. 3 is a cross-sectional view of the configuration of the lower housing body of the drillable water-jet eye according to the embodiment of the present invention;

FIG. 4 is a cross-sectional view of a configuration of a ceramic port of a drillable port provided in accordance with an embodiment of the present invention;

Detailed Description

First, it should be noted that the specific structures, features, advantages, etc. of the present invention will be specifically described below by way of example, but all the descriptions are for illustrative purposes only and should not be construed as limiting the present invention in any way. Furthermore, any single feature described or implicit in any embodiment or any single feature shown or implicit in any drawing may still be combined or subtracted between any of the features (or equivalents thereof) to obtain still further embodiments of the invention that may not be directly mentioned herein. In addition, for the sake of simplicity, the same or similar features may be indicated in only one place in the same drawing.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

The present invention will be specifically described with reference to fig. 1 to 4.