Yikuang Science and Technology Drill Pipe Drill Bit Manufacturer/Specification Drill Pipe Construction Technology to Increase Service Life

Release time:

2019-07-22

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(1) standard operation: in the construction, the drill pipe should be used in strict accordance with the tension, torque and curvature diameter allowed by various drill pipes. For construction enterprises, abnormal failure of drill pipes can be effectively avoided only when drill pipes are used according to specifications. (2) Function of transition rod: during reaming and pipe drawing, the curvature diameter of the drill pipe connected with the reaming drill bit is likely to be much smaller than the designed curvature radius of the borehole), thus causing the drill pipe to be subjected to greater cyclic stress under the action of rotating and pulling force, causing fatigue damage, in turn, cracks and fractures occur. This kind of fracture mostly occurs between 03~0.8m from the male joint of the drill pipe. In

(1) standard operation: in the construction, the drill pipe should be used in strict accordance with the tension, torque and curvature diameter allowed by various drill pipes. For construction enterprises, only by using the drill pipe according to the specification can the abnormal failure of the drill pipe be effectively avoided;

(2) The role of the transition rod: in the process of reaming and pipe drawing, the curvature of the drill rod connected with the reaming drill bit is likely to be much smaller than the curvature radius of the drilling design), so that the drill rod is subjected to greater cyclic stress under the action of rotation and tension, causing fatigue damage, resulting in cracks and fracture. This kind of fracture mostly occurs between 03~0.8m from the male joint of the drill pipe. The transition rod is connected between the ordinary drill rod and the reaming bit, so that the small curvature transition between the reaming bit and the ordinary drill rod can be undertaken by adding the transition rod, thus protecting the ordinary drill rod. This role of the transition rod is often ignored by the user, but many seemingly unexplained drill pipe accident is the cause.

(3) to prevent the instability of the drill pipe: the drill pipe is a slender rod in mechanics, which tends to lose stability under pressure. Therefore, in the construction stage of the pilot hole, the drill pipe in the free state should be restrained to prevent the drill pipe from being unstable and bending failure during the jacking process. The instability of the drill pipe mostly occurs in the drill pipe section between the rig holder and the entry point. The length of this section should be shortened as much as possible, or appropriate restraint measures should be taken. In order to prevent the instability of the drill pipe, the length of the free section of the drill pipe should be less than 20 times of the diameter of the drill pipe;

(4) the use of thread oil: good quality thread oil can effectively prevent the drill pipe buckle, reduce the shackle torque, reduce the buckle and wear;

(5) the use of flushing fluid: in the sand layer, gravel layer drilling, the application of high quality mud as flushing fluid. Mud on the outer wall of the drill pipe to form mud, play a lubricating role, can reduce the drilling torque, reduce the wear of the drill pipe, to protect the drill pipe play a very important role.

(6) Inspection of drill pipe: After the drill pipe is used for a period of time, the wear, bending, table and scratches of the drill pipe should be checked, and the drill pipe with excessive wear, obvious bending and table and deep scratches should be eliminated in time. In particular, carefully check the wear of the forging transition section, which is often the most vulnerable to wear.

Shandong Yikuang Drilling Technology Co., Ltd. produces all kinds of geological drill pipes, spiral drill pipes, triangular heavy-duty grooved drill pipes, special-shaped multi-angular grooved drill pipes, coal drill pipes, drill bits, drill pipes, etc., with complete specifications! Strength manufacturers, trustworthy! company set research and development-production-sales-sales as one, welcome customers to purchase, tel: 0635-2311078

Key words:

Drill pipe, geological drill pipe, spiral drill pipe, rib drill pipe, air drill pipe, new coal drill pipe

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