Press

Three Differences Between Oil Casing Pipe and Oil Drill Pipe


There are three main differences between oil casing pipe and oil drill pipe: 1. different uses; 2. different functions; 3. different materials.

1.Uses of oil casing pipe and oil drill pipe:
Oil casing is a steel pipe used to support the well wall of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well will use several layers of casing according to different drilling depths and geological conditions. Cement is used to cement the casing after it goes down the well. It is different from tubing and drill pipe and cannot be reused. It is a disposable material. Therefore, the casing consumption accounts for more than 70% of all oil well pipes. The casing can be divided into: casing, surface casing, technical casing and oil layer casing according to the usage.

The drill pipe is a steel pipe with a thread at the end, which is used to connect the surface equipment of the drilling rig with the drilling and grinding equipment or 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. The drill pipe must be able to withstand huge internal and external pressure, twist and bend
And vibration. In the process of oil and gas extraction and refining, drill pipes can be used multiple times. Drill rods are divided into three categories: square drill rods, drill rods and weighted drill rods. The connection sequence is square drill pipe (1 piece) + drill pipe (n pieces, determined by the well depth) + weighted drill pipe (n pieces, determined by the design of drill tool assembly).

2.The role of oil casing pipe and oil drill pipe:
The oil casing is used to reinforce the well wall, and the inner and outer diameters are much larger than the drill rod; the drill rod is used to connect the drill collar and the drill bit, and the length is sufficient to support the drill bit in the downhole operation. Regardless of function or size, they are all different.
The drill pipe is a rod member connected in the drilling tool to transmit power. The usual components of a drill string are: drill bit, drill collar, drill rod, stabilizer, special joint and square drill rod. The basic functions of the drill string are: (1) lifting the drill bit; (2) applying drilling weight; (3) transmitting power; (4) delivering drilling fluid; (5) performing special operations
Industry: Squeeze cement, handle underground accidents, etc.

3.Material of oil casing pipe and oil drill pipe:
There are many kinds of oil casing materials, the basic ones are ordinary carbon steel, J55, L80, N80, P110, etc., and then more special materials, such as 3Cr, 9Cr, 13Cr, 22Cr, etc., mainly to prevent carbon dioxide and sulfidation Hydrogen materials, such as 90SS, 95SS, etc. In addition, there are higher-grade, nickel-chromium alloy tubes. Depending on the manufacturer, the number is different and there are some special needs, such as high crush resistance materials, some The manufacturer will add TT to indicate crush resistance.

Petroleum drill pipe: API standard E75 to S135 steel grade, outer diameter from 2 3/8 ″ to 6 5/8 ″ series of petroleum drill pipe, double shoulder joint drill pipe with high torsion resistance Special steel grade BNK C95S drill pipe for sulfur oil wells. Mainly suitable for deep wells, horizontal wells and large displacements during oil and gas exploration and development
construction of the well.



New service from OilVoice
Trip Shepherd is for companies who need to track their staff in areas of risk.
It's free to use, so we invite you to try it.

Visit source site

https://permanentsteel.com/productshow/casing-pipe...

casing pipedrill pipeOil and Gasdifference

More items from lvy


Oil and Gas Storage and Transportation Projects Promote the Use of ERW Steel Pipes

The operation conditions of oil storage and transportation system in petrochemical enterprises are relatively "mild" compared with production equipment. Its working pressure is generally below 2.5Mpa, in some cases up to 4.0 Mpa; the working temperature is generally below 100 °C, the highest does no ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 3 days agoPress > Oil and GasStorage and Transportationerw steel pipe +1

Production Method and Application Field of High-pressure Seamless Steel Pipe

What is high-pressure seamless steel pipe ? It is a type of boiler tube and belongs to the seamless steel tube category. The manufacturing method is the same as that of seamless steel tubes, but there are certain strict requirements for the steel types used for manufacturing steel tubes. Since high ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 18 days agoPress > boiler tubeHigh-pressure Seamless Steel Pipeapplication field +1

Application of Stainless Steel Welded Pipe in Various Industries

Stainless steel welded pipe, abbreviated as welded pipe, is a steel pipe that is usually welded after the steel or steel belt is rolled by the unit and the mold. Welded steel pipe production process is simple, high production efficiency, many varieties and specifications, less equipment investment ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 23 days agoPress > stainless steel pipewelded pipeVarious Industries +1

ERW Steel Pipe and SAW, SML Steel Pipe Performance Comparison

1. Comparison of ERW and SAW steel pipes Because the length of SAW ( Spiral Steel Pipe ) weld is about 4~5 times of the length of ERW weld, and the inner weld nodules are not removed by technological means, the friction of the inner wall of the pipeline is inevitably increased when the medium is con ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 27 days agoPress > erw steel pipeSAW PipeSML steel pipe +2

Urban Gas Pipeline Network Using ERW Steel Pipe and its Anti-corrosion Problems

Comparison of pipe materials used in urban gas pipeline network: At present, the urban gas pipeline network mainly uses ERW steel pipes , cast iron pipes and polyethylene (PE) pipes. From the perspective of safety and economy, that is, to ensure the quality of the project , the safety of gas s ...

lvy lee - Permanent Steel Manufacturing Co.,Ltd


Posted 28 days agoPress > Gas Pipelineerw steel pipeAnti-corrosion Problems +2
All posts from lvy