GGQX ⅡHeavy Duty Casing Scraper is used for scraping casing pipe inner wall. The tool only needs to move the tube up and down. This tool, along with other tools, can be rotated if the string needs to be rotated. The entire scraper component does not rotate along the axis and does not scratch the casing wall. The tool is simple in structure and flexible in operation.

Before and after the perforation of the new well, cement, iron, shell skin, burr, paraffin, oil and other debris should be removed to protect the formation from pollution. At the same time, ensure the completion tools to run smoothly and meet the requirements of packer and other sealing tools. In addition, after long-term use of oil Wells, the inner wall of casing could be damaged, and there will be shrinkage, fracture, burr and other problems. It is necessary to run a tool in the well and check whether there is any change in the inner diameter. It is also necessary to run a scraper to scrape the metal burr, scale and other substances on the inner wall of the casing. 

Two-Way Shock Absorber Type JZ-YS

The Two-Way Shock Absorber Type JZ-YS is an effective shock absorbing device. It can be used to reduce or eliminate both transversal and longitudinal vibration of drill string, thus maintaining normal weight-on-bit (WOB) and torque, reducing vibration failure on bit, drill string and surface equipment, and leading to improvement in rate of penetration (ROP) and reduction in drilling cost. At present, all of the home-made shock absorbers can reduce the vibration only in one direction (longitudinally), and can not work effectively when used for drilling operation in hard formation and gravel formation. Therefore, developing the Two-Way Shock Absorber is very significant according to the characteristics of the drill tool assemblies used in China’s fields.

Model “QJ” Mechanical Drilling Jar

The Model “QJ” Mechanical Drilling Jar is a jarring and stuck releasing tool. It integrates the up jar and down jar and can release the stuck accident occuring during drilling operation. The Drilling Jar is an ideal tool for directional well and deep well drilling. Compared with the hydraulical or hydromechanical drilling jar, the “QJ” Mechanical Drilling Jar has following advantages:

a） Quality change of hydraulic oil in the inner chamber will not influence the jarring effect due to the application of mechanical structure.

b） High pressure will not develop in inner chamber, leading to a good sealing property and greatly extending its life.

c） Upward or downward jarring load is adjusted prior to tripping in and will not change during operation, keeping a constant jarring load.

d） Except 4 3/4″ Drilling Jar, all others have the tapered thread, facilitating the disassembly and assembly operation.

e） The Drilling Jar has an unique structure which can accurately transmit the torque, being suitable for drilling the deviated well.

 “QYIII” Full Hydraulic Drilling Jar

Model “QYIII” Full Hydraulic Drilling Jar is a kind of unfreezing tool when they get stuck. It is an integral hydraulic jar with up jarring and down jarring. It adopts the valve structure, making time-lag more stable and performance more reliable. The time-lag of Model “QYIII” Full Hydraulic Drilling Jar can generate the elastic elongation of drill string richly, reserving energy as to obtain the best jarring effect. When downhole tools are stuck, “QYIII” Full Hydraulic Jar can offer a huge impact force to unfreeze. As a result, common drilling operation can be regained rapidly.

When the “QYIII” jar is used, operators can adjust to pick it up or slack it off on surface to create up jarring impact or down jarring impact (without adjustment to the outside part) and can adjust impact freely within permissible range. The “QYIII” jar can be operated easily and conveniently with high reliability and applied to downhole operations, such as drilling, coring, fishing, workover, etc.

“DHJ” Mechanical and Hydraulic Shock Absorber

Model “DHJ” Mechanical and Hydraulic Shock Absorber is a two-action modern shock absorber. It absorb the shimmy and commotion of drill tools by compressing two kinds of damping spring devices ( dished spring and silicone oil ) to store the energy. And it has an advantage of well maintainable, bearing high load and long service life. Meanwhile, the Shock Absorber exist double rigidity in one absorbing stroke (initial low rigidity and subsequent high rigidity).Thus, it can meet a need of distinct layer fully and give a best protection to bits.