CN216588485U

CN216588485U - Petroleum drill rod with limiting device

Info

Publication number: CN216588485U
Application number: CN202120980266.2U
Authority: CN
Inventors: 徐树林; 蒋鹏; 黄海春; 蒋存民; 张震宁
Original assignee: JIANGSU SHUGUANG HUAYANG DRILLING TOOL CO Ltd
Current assignee: JIANGSU SHUGUANG HUAYANG DRILLING TOOL CO Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2022-05-24
Anticipated expiration: 2031-05-08

Abstract

The utility model relates to the technical field of oil drill pipes and discloses an oil drill pipe with a limiting device, which comprises drill pipes, wherein a limiting assembly is arranged between the two drill pipes; and an anti-corrosion component is arranged on the drill rod. The utility model provides an oil drill rod with a limiting device, and the position of the two drill rods after connection is stable by arranging a limiting component; through being equipped with the anticorrosion subassembly, do benefit to galvanic reaction and increase the life of drilling rod.

Description

Petroleum drill rod with limiting device

Technical Field

The utility model relates to the field of petroleum drill pipes, in particular to a petroleum drill pipe with a limiting device.

Background

The drill rod is a steel pipe with threads at the tail part and is used for connecting surface equipment of a drilling machine and drilling and grinding equipment or a bottom hole device at the bottom end of a drilled well. The purpose of the drill pipe is to carry drilling mud to the drill bit and, together with the drill bit, raise, lower or rotate the bottom hole assembly. The drill pipe must be able to withstand large internal and external pressures, twists, bends and vibrations. In the process of oil and gas exploitation and extraction, the drill pipe can be used for multiple times. The drill rods are divided into a kelly, a drill rod and a weighted drill rod. The connection sequence is square drill pipe (1 piece) + drill pipe (n pieces, determined by well depth).

Because the oil drilling depth is usually deeper, with the increase of the drilling depth, a plurality of drill rods are required to be connected in sequence to ensure normal drilling operation. Due to different geological conditions, the depth of some petroleum drilling wells can reach thousands of meters, even the depth of the petroleum drilling wells in some special areas can reach thousands of meters, the drill rods are in threaded connection with one another through the connectors, the limiting assemblies are omitted, loosening of joints is easy to cause, meanwhile, paint is directly sprayed, corrosion resistance is poor, and the service life is shortened.

In order to solve the problems, the application provides an oil drill pipe with a limiting device.

SUMMERY OF THE UTILITY MODEL

Objects of the utility model

In order to solve the technical problems in the background art, the utility model provides an oil drill rod with a limiting device, and the position of the two drill rods after being connected is stable by arranging a limiting component; through being equipped with the anticorrosion subassembly, do benefit to galvanic reaction and increase the life of drilling rod.

(II) technical scheme

In order to solve the problems, the utility model provides an oil drill rod with a limiting device, which comprises drill rods, wherein a limiting assembly is arranged between the two drill rods;

an anti-corrosion component is arranged on the drill rod;

the limiting assembly comprises two limiting rings and a limiting rod, the two limiting rings are fixedly sleeved on the two drill rods respectively, one end of the limiting rod extends into one limiting ring and is connected with the limiting ring in a sliding mode, and the other end of the limiting rod extends into the other limiting ring and is connected with the limiting ring in a threaded mode;

the anti-corrosion assembly comprises an annular shell, an active metal ring and an active metal rod, wherein the annular shell is fixedly sleeved on the drill rod, the annular shell is fixedly sleeved on the active metal ring, the active metal rod is fixedly sleeved on the annular shell, and one end of the active metal rod is fixedly connected with the active metal ring.

Preferably, one end of the limiting rod is provided with threads and is matched with the limiting ring.

Preferably, the active metal ring has the same activity as the active metal rod and the activity is greater than that of the drill rod.

Preferably, the number of the limiting rods is multiple, and the limiting rods are uniformly distributed on the limiting ring in an annular mode.

The technical scheme of the utility model has the following beneficial technical effects:

the two limiting rings are respectively and fixedly arranged on the drill rods and are connected through the limiting rods, so that when the two drill rods rotate, the two drill rods are driven by the limiting rods, and the looseness of the connection part between the two drill rods is reduced; by utilizing the principle of galvanic reaction, the active metal ring and the active metal rod are used as anodes, the drill pipe is used as a cathode, the solution in the drill hole is used as electrolyte, the active metal ring and the active metal rod of the anode are sacrificed to protect the cathode, so that the corrosion of the drill pipe is reduced, and the service life of the drill pipe is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of an oil drill pipe with a limiting device according to the present invention.

Fig. 2 is a schematic cross-sectional structural view of an anti-corrosion assembly in an oil drill pipe with a limiting device according to the present invention.

Reference numerals: 1. a drill stem; 2. a limiting component; 21. a limiting ring; 22. a limiting rod; 3. an anti-corrosion component; 31. a ring shell; 32. an active metal ring; 33. an active metal rod.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-2, the oil drill pipe with a limiting device provided by the utility model comprises drill pipes 1, wherein a limiting assembly 2 is arranged between the two drill pipes 1;

the drill rod 1 is provided with an anti-corrosion component 3;

the limiting assembly 2 comprises two limiting rings 21 and a limiting rod 22, the two limiting rings 21 are fixedly sleeved on the two drill rods 1 respectively, one end of the limiting rod 22 extends into one limiting ring 21 and is connected with the limiting ring 21 in a sliding mode, and the other end of the limiting rod 22 extends into the other limiting ring 21 and is connected with the limiting ring 21 in a threaded mode;

the anti-corrosion component 3 comprises an annular shell 31, an active metal ring 32 and an active metal rod 33, wherein the annular shell 31 is fixedly sleeved on the drill rod 1, the annular shell 31 is fixedly sleeved on the active metal ring 32, the active metal rod 33 is fixedly sleeved on the annular shell 31, and one end of the active metal rod 33 is fixedly connected with the active metal ring 32; the ring shell 31 is made of a non-metal material and is used for protecting the active metal ring 32 from collision damage.

In an alternative embodiment, one end of the limiting rod 22 is threaded and is adapted to the limiting ring 21, and the other end of the limiting rod 22 extends into the limiting ring 21 and is slidably connected to the limiting ring 21.

In an alternative embodiment, the active metal ring 32 is the same as the active metal rod 33 and has a greater activity than the active metal rod 1.

In an alternative embodiment, the number of the stop rods 22 is multiple, and the stop rods are uniformly distributed on the stop collar 21 in an annular shape, so as to increase the stability of the drill rod 1 during rotation.

In the utility model, two limiting rings 21 are respectively and fixedly arranged on the drill rods 1, and the two limiting rings 21 are connected through a limiting rod 22, so that when the two drill rods 1 rotate, the two drill rods are driven by the limiting rod 22, and the looseness of the joint between the two drill rods 1 is reduced; by utilizing the principle of galvanic reaction, the active metal ring 32 and the active metal rod 33 are used as anodes, the drill pipe 1 is used as a cathode, the solution in the drilling well is used as electrolyte, the active metal ring 32 and the active metal rod 33 of the anode are sacrificed, and the cathode is protected, so that the corrosion of the drill pipe 1 is reduced, and the service life of the drill pipe 1 is prolonged.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. An oil drill pipe with stop device, includes drilling rod (1), its characterized in that: a limiting component (2) is arranged between the two drill rods (1);

the drill rod (1) is provided with an anti-corrosion assembly (3);

the limiting assembly (2) comprises two limiting rings (21) and a limiting rod (22), the two limiting rings (21) are fixedly sleeved on the two drill rods (1) respectively, one end of the limiting rod (22) extends into one limiting ring (21) and is in sliding connection with the limiting ring (21), and the other end of the limiting rod (22) extends into the other limiting ring (21) and is in threaded connection with the limiting ring (21);

anticorrosion subassembly (3) contain ring shell (31), active becket (32) and active becket (33), the fixed suit of ring shell (31) is on drilling rod (1), the fixed suit of ring shell (31) is on active becket (32), the fixed suit of active becket (33) is on ring shell (31), the one end and the active becket (32) fixed connection of active becket (33).

2. The oil drill pipe with the limiting device as claimed in claim 1, characterized in that one end of the limiting rod (22) is threaded and is matched with the limiting ring (21).

3. Petroleum drill pipe with stop device according to claim 1, characterized in that the active metal ring (32) is as active as the active metal rod (33) and is more active than the drill pipe (1).

4. The oil drill pipe with the limiting device is characterized in that the limiting rods (22) are multiple in number and are uniformly distributed on the limiting ring (21) in an annular mode.