Company News

2024-04-29

What is the connection between pup joint and well pipe casing?

Pup joint is an important component for connecting pipelines and has been widely used in industrial production, construction and other fields. It has the characteristics of tight connection and high durability, and is an important component to ensure the safety and stability of pipeline operation. Petroleum pup joint and well pipe casing is important tools in petroleum engineering development. They are closely related and interact with each other. They both play important roles in the petroleum industry and together constitute the petroleum drilling and production system ,key components.

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2024-04-28

What is the difference between a drill pipe and a drill collar?

The drill collar has a thicker wall than the drill pipe and weighs more per unit length. The lower part of the drill collar is connected to the drill bit, and the upper part is connected to the drill pipe. The functions are similar. The drill pipe mainly transmits motion and power. The drill collar is stronger than the drill pipe and directly drives the drill bit to work.

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2024-04-28

How to use and maintain casing and tubing ?

With the advancement of industrialization, whether in construction, chemical industry, energy or other fields, pipelines are increasingly used everywhere. As an important transportation tool, pipelines are particularly important to ensure their quality and service life. Oil casing and tubing is an important part of the oil drilling and production process and is critical to ensuring the safe operation and extending the service life of downhole equipment. In order to ensure the normal operation of pipelines and extend their service life, we need to know some knowledge about daily maintenance of casing and tubing.Things that need to be paid attention to in the early stage of running down the well, and preparation and inspection before casing and tubing is run down the well.

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2024-04-26

How to Choose the Right Drill Collar

The drill collar is a tool used for drilling, sampling, fixing, etc. The drill collar is connected to the drill pipe and plays an overall weighting role to prevent backlash. The inner diameter of the drill collar is smaller than the drill pipe and its weight is larger than the drill pipe. big. Its main principle is to use a fast motor or manual pusher to drive the blade to rotate in the direction to be drilled to achieve the purpose of drilling. There are two main types of drill collars on the market: manual drill collars and electric drill collars. Among them, manual drill collars are suitable for light work, such as simple drilling or fixing screws. Electric drill collars, on the other hand, are suitable for drilling jobs that require large amounts of drilling or deeper, harder materials. A drill collar is a thick-walled round steel pipe. It is connected to the drill bit to apply drilling pressure and torque to the drill bit and prevent well deviation. Drill jacks of different sizes should be selected according to the drill bit size. Drill collar sizes range from 31/8 to 11 inches, and the heaviest drill collar can weigh up to 300 kilograms per meter. The connecting threads at both ends of the drill collar are tapered male and female buttons.

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2024-04-26

Analysis of the causes of casing pipe damage

With the development of economy, oil plays an increasingly important role in my country's economic construction. As an important part of the national economy, its safety performance affects people's production and life to a great extent. However, in the actual process of oil transportation, some unsafe accidents often occur, and the failure of oil casing pipe has an unshirkable responsibility to a large extent. Oil casing pipe failure brings huge losses to oil fields. Oil casing pipe play a key role in the oil drilling and production process, but they also face a variety of potential failure risks. These risks may lead to a decrease in the mechanical properties of the casing pipe, a weakening of the corrosion resistance, or even direct casing pipe failure. The following are some common causes of oil casing pipe failure and their analysis.

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2024-04-25

Well pipe casing cathodic protection method

With the rapid development of the petroleum industry, well casings, buried pipelines, storage tank floors, and pup Joints inside oil fields are all subject to external corrosion. In particular, severe corrosion of well casings has brought great problems to the production, development, and production of oil fields. Management as well as the environment have had serious impacts. There is corrosion on both the inner and outer walls of oil and gas well casings, among which internal corrosion is more serious. In addition, in well sections with large changes in well inclination, the mechanical damage of the tubing to the casing during operations accelerates the corrosion and perforation of the casing; welding defects in the welds, gaps in the threads and other parts can easily cause differences in the electrochemical properties of the steel pipe surface. It also leads to more serious corrosion damage.

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2024-04-25

How to Select the Right Steel Pipe Piles

Steel pipe piles are essential components in deep foundation systems, used across construction, marine, and infrastructure projects. Selecting the right type is not a one-size-fits-all decision—it requires careful consideration of multiple technical factors. In this guide, we’ll walk through everything you need to know to make an informed choice.

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2024-04-24

The causes of screen casing plugging and the measures of treatment

As oilfield development enters the middle and late stages, the wellbore environment is deteriorating day by day, and the impact of sand and wax formation on the downhole pipe strings of oil wells is increasing. In the management of mechanical production, it is often found that the oil well performance map type is insufficient liquid supply or affected by gas, and the submergence degree is greater than 500 meters. The data is abnormal and the data is unqualified. However, after analyzing the structure of the oil well string and the working principles of each part, it is more reasonable to define this type of well as a screen casing plugged well. In oil wells or other pipelines, both screen casing and slotted casing may cause blockage, but the causes and methods of blockage are different. Screen casing is a casing with filtering function. Its main function is to prevent solid particles from entering the inside of the pipe and protect underground equipment from damage. Therefore, if the formation at the bottom of the well contains a large amount of solid particles or impurities, these particles may clog the filter holes of the Screen causing the bottom well flow to be blocked, thereby affecting the efficiency of oil production or water injection.

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2024-04-23

The advantages of using slotted casing in horizontal wells

With the rapid development of social economy, the demand for natural resources in various industries is also growing, and the same is true for mineral resources. Petroleum, as an important natural resource, is of great significance to the development of industry in various countries. The completion technology of fractured slotted casing is an advanced development technology and an effective means to develop fractured oil reservoirs. Compared with screen casing, it has the characteristics of easy downhole operation, high practicability and low cost. This article will introduce it in detail Advantages of slotted casing.

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2024-04-23

Pup Joints in the connection of oil casing precautions

Pup joints and casings are common pipe fitting materials in petroleum engineering, which are related to the completion quality and production efficiency of oil wells. Oil Pup Joint is one of the key components used in the oil and gas equipment process. It connects the equipment and pipeline , and serves as a connection and seal to ensure the safety and smooth progress of the entire process. The processing technology of oil pup joints has a greater impact on the quality and performance of the product. There are many things that need to be paid attention to. This article will introduce some precautions for connecting oil casing of pup joints and how to maintain pup joints.

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2024-04-22

The key role of oil drill pipe in oil exploration and its application

As a core tool in the oil industry, oil drill pipe plays an indispensable role. It is a long and strong metal pipe that can withstand strong vibration and huge loads under high pressure and high temperature environment. Usually, oil drill pipe is made of several sections of steel pipes and is used for up and down movement during drilling operations. Oil drill pipe is widely used in oil and gas extraction operations. Its excellent durability and multiple use characteristics make it an essential equipment in oil exploration. Next, we will explore the various application scenarios of oil drill pipe in depth.

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2024-04-22

Production process flow of casing and tubing

Casing and tubing are steel pipes used to support the well walls of oil and gas wells to ensure the normal operation of the entire oil well during the drilling process and after completion. Each well requires several layers of casing and tubing based on different drilling depths and geological conditions. Cement must be used to cement the casing and tubing after it is lowered into the well. Unlike oil pipes and drill pipes, it cannot be reused and is a one-time consumable material. Therefore, the consumption of casing accounts for more than 70% of all oil well pipes. Casing and tubing can be divided into: conduit, surface casing, technical casing and oil layer casing according to usage conditions.