Combined type drill stem
A combined drill pipe technology, which is applied in the field of exploration components, can solve the problems of reduced stability of drill pipe connections, prone to slippage of male/female joints, and large load-bearing joints of drill pipes.
Active Publication Date: 2019-06-28
无锡锡钻地质装备有限公司
View PDF11 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
According to the depth of drilling, the sections of drill pipe are connected to each other through a specific docking method; most of the existing drill pipe docking methods are threaded connections, that is, male / female joints are used, but during the actual drilling process, frequent Drill lifting action occurs, multiple drill pipes are connected, and the bottom-up drill pipe connection has a large load-bearing force. Simultaneous drill lifting action will lead to a decrease in the stability of the drill pipe connection. This is because the male / female joints are caused by excessive pressure. prone to slipping
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] A number of embodiments of the present invention will be disclosed in the following figures. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary. In addition, for the sake of simplifying the drawings, some well-known and commonly used structures and components will be shown in a simple schematic manner in the drawings.
[0032] In addition, in the present invention, descriptions such as "first", "second" and so on are used for description purposes only, and do not refer to the meaning of order or sequence, nor are they used to limit the present invention, but are only for the purpose of distinguishing the following The components or operations described by the same technical terms are only used, but should not be understood a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Extension length | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to the technical field of exploration parts, in particular to a combined type drill stem which comprises an outer sleeve rod and an inner lining rod inserted in the outer sleeverod. The outer surface of the inner lining rod is provided with a plurality of spline edges. Every two adjacent spline edges and the inner wall of the outer sleeve rod form a medium channel, and one medium channel is an oil injection channel. The two ends of the outer sleeve rod are fixedly provided with a male connector and a female connector respectively. A first annular groove is formed in theouter wall surface of the outer end of each male connector and internally provided with an expansion oil bag. A load-bearing cylinder is arranged at the rear end of each female connector. A weight-reducing chamber is formed in the front end of each load-bearing cylinder. An oil injection groove communicated with the interior of the corresponding expansion oil bag is formed in each male connector and communicated with the oil injection channel. The two end faces of the inner lining rod are provided with a rotating ring and a sealing ring respectively. The connection stability between two adjacent drill stems can be enhanced, and the frequent drill stem lifting actions can be satisfied.
Description
technical field [0001] The invention relates to the technical field of exploration components, in particular to a combined drill pipe. Background technique [0002] The drill pipe is a steel pipe with threads at the end, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or the bottom hole device at the bottom of the drilling well. The purpose of the drill pipe is to transport the drilling mud to the drill bit, and together with the drill bit to raise, lower or rotate the bottom hole device; currently, the drill pipe used in the extra-large shaft drilling rig is a double-walled drill pipe, which has a transmission compressed air The air duct and the mud return channel for transporting mud. According to the depth of drilling, the sections of drill pipe are connected to each other through a specific docking method; most of the existing drill pipe docking methods are threaded connections, that is, male / female joints are u...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): E21B17/00E21B17/042E21B17/18
Inventor 张世文徐颂贤
Owner 无锡锡钻地质装备有限公司