News

Industry News

The difference between drill collars and drill rods

The difference between drill collars and drill rods

The drill collar is attached to the drill pipe and plays a role in overall weighting to prevent deviation. The inner diameter of the drill collar is smaller than that of the drill pipe and the weight is larger than that of the drill pipe. During the drilling process, the drilling pressure is formed by the weight of the drill string (connected by the drill pipe), so the lower part of the drill string is subjected to compressive stress.

2023/12/19

Precautions for using non-magnetic drill collars

Precautions for using non-magnetic drill collars

1. After use, mud and dirt should be removed, the safety of each component should be checked, then anti rust oil should be applied and stored in a dry and ventilated place. 2. On site inspection, if one of the criteria for repair or scrapping is found, it should be recycled for repair or scrapping. 3. In order to ensure the accuracy of magnetic instrument measurement results, it is necessary to choose the length of the non-magnetic drill collar reasonably.

2023/12/13

The function of spiral drill collars

The function of spiral drill collars

Spiral drill collars are used to machine three right-handed spiral grooves on the outer cylindrical surface of circular drill collars. Leave a 305~560mm section at the external threaded end joint and a 457~610mm circular drill collar section without machining spiral grooves at the internal threaded end joint for ease of connection and repair. The weight is 4% less than that of circular drill collars of the same size.

2023/12/11

The function and shape classification of drill collars

The function and shape classification of drill collars

Drill collars are used to increase the weight of the drill string and provide greater drilling pressure to the drill bit, accelerating the drilling speed. Due to its strong rigidity and good stability, it also plays a role in stabilizing the drill bit and maintaining the wellbore trajectory.

2023/12/06

Main features of drill pipe

Main features of drill pipe

The smooth pipe and the raw steel pipe are made into a drill pipe after a number of processing steps. First, through the treatment of the steel pipe thickening process, the outer surface of the steel pipe is bent inward, and the steel pipe wall is thickened. Next, thread processing is performed and plated with copper to increase strength. A non-destructive quality control inspection is then performed, followed by welding of the steel pipe body joint.

2023/08/25

What is drill pipe

What is drill pipe

A drill pipe is a steel pipe with a thread at the tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or bottom hole device at the bottom of the drilling. The purpose of the drill pipe is to carry drilling mud to the drill bit and to raise, lower or rotate the bottom hole device together with the drill bit. The drill pipe must be able to withstand huge internal and external pressure, distortion, bending and vibration. In the process of oil and gas extraction and refining, drill pipe can be used many times.

2023/08/25

< 1...17181920 > proceed page

SAF Coolest v1.3 设置面板OUJSX-ZPVW-WFASE-ZWF

营业执照及SEO链接： Business License

无数据提示

Sorry, the current column has no content for the time being.!

You can view other columns or returnHome Page

SVG图标库请自行添加图标，用div包起来，并命名使用