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27
2018-08
What are the characteristics of small rotary drilling rig?
At present, the rotary digging machine market, the most popular is the small rotary drilling rig, favored by the public, why small rotary drilling rig so popular. Features of small rotary drilling rigs: 1. High efficiency of small rotary drilling rigs: advanced technology of small rotary drilling rigs, circular drilling, will not increase the load of the machine with the increase of depth, and the operation is very stable, at the same time, the torque is large and the efficiency is also high. 2, small rotary drilling rig to adapt to a variety of topography, to adapt to a variety of geological conditions, to adapt to a variety of construction requirements. The body design is compact, the operation is flexible and rapid, and the transition is convenient.
2018-08-27
24
2018-08
What are the preparations for the construction of the drill pipe of the rotary digging machine?
Rotary drilling machine drill pipe is a kind of equipment used more in many construction projects. It is fixed on the main winch drum through the wire rope, and the drill pipe can rise or fall accordingly when the drum is rolled or put on the wire rope. In order to ensure that the drill pipe of the rotary excavator works better and more safely, it is necessary to make relevant preparations before construction. The specific contents of the preparatory work are as follows: 1. The construction organization design must be pre-examined. Before the commencement of the project, the construction unit shall review the construction methods, main technical indicators and control measures to ensure that the work is correct. 2. must carefully good measurement positioning off. Measurement positioning is the key to the whole work, related to the hole position
2018-08-24
23
2018-08
Safety Operation Regulations for Impact Drill
The percussion drilling machine is an important drilling machine for the construction of cast-in-place pile foundation, which can adapt to various geological conditions, especially in the pebble layer, and the percussion drilling machine is more adaptable than other types of drilling machines. At the same time, with the impact drill hole, into the hole, the hole wall around the formation of a layer of dense soil layer, to stabilize the hole wall, improve the pile bearing capacity, have a certain role. Installation of 1. drilling rig 1. The site where the drilling rig is installed shall be flat and solid. If the drilling rig is installed in the soft stratum, the foundation shall be treated, and then sleepers shall be paved to ensure the stability of the drilling rig during operation, so as to avoid local subsidence of the drilling rig during drilling and affect the drilling.
2018-08-23
22
2018-08
Design and Application of Rib Drill Pipe in Coal Mine
The drill pipe is one of the main components of the drilling tool. During drilling, the power is transmitted to the core pipe, the drill pipe and the drilling tool. Due to the complex underground geological conditions, a hole with a depth of 100 meters is likely to contain both soft and hard strata. The traditional drill pipe cannot meet the drilling requirements under this special condition, which brings great difficulties to the underground drilling work, it is not conducive to the transformation and development of enterprises, so it is very important to find a solution to the problem. Through the analysis of drilling equipment, field working environment and construction formation, the whole process of traditional drill pipe drilling is studied. Traditional drill pipe mainly has outer flat
2018-08-22
21
2018-08
On the use of drill pipe conditions to explain
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 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. On the use of drill pipe to explain the conditions: 1, the rated torque of the selected drill pipe is greater than the large torque of the drilling rig. The rotation speed of the drilling machine shall be less than the rotation speed of the drill pipe (the impact on the drill pipe formed by the moment of inertia of the drilling tool shall be less than the rated torque of the drill pipe.
2018-08-21
20
2018-08
What are the basic components of a rig and what do they do?
The drilling rig is mainly composed of four major parts: rotary mechanism, feed mechanism, lifting mechanism and frame. The rotary drilling tool drives the drill bit to work at the bottom of the hole. Feeder mechanism: adjust the drilling pressure required for the drill bit to work at the bottom of the hole and control the feed speed; Lifting mechanism: used to complete the lifting of drilling tools, casing and ancillary work. Some drilling rigs also use the lifting mechanism to control the feed speed and feed pressure. Frame: according to the characteristics of the overall layout of the drilling rig, the above components are assembled into one or two whole, to achieve the requirements of compact structure, easy installation and disassembly.
2018-08-20
20
2018-08
How to prevent drill pipe sticking of rotary digging machine?
In the use of rotary digging machine drill pipe, many times, users will encounter the phenomenon of sticking, causing rotary digging machine drill pipe sticking there are many reasons, in order to reduce the loss of rotary digging machine drill pipe sticking, do a good job of prevention is very important. Here, Xiaobian will tell you how to prevent the drill pipe of rotary digging machine from sticking. 1, to the drilling bucket for regular maintenance and maintenance. Because the gap between the bottom of the bucket and the hook increases, the weight of the bottom of the bucket is carried by the bottom of the hole after drilling, which easily leads to the hook being pushed away or shaken open by the muck. 2. When the drill pipe of the rotary excavator is drilling into a large layer with large vibration, it is best to adopt a low-speed and light-pressure method to reduce the vibration. However, if you drill into a hard formation, you should inject
2018-08-20
16
2018-08
Rig operation: operation skill mainly lies in pressurization
From the outside, the rotary drilling rig gives the feeling of being very tall, and it feels like the handle after entering the cab. There are many buttons, which generally gives people a complicated feeling. However, the fact is also true. From the positioning of the machine to the auxiliary working condition, and then to the drilling under the main working condition, there are indeed many actions required. However, in order to open the rotary drilling rig well, pressure is the most important among the many operating actions! The pressurization we mentioned here is not blindly downward pressurization through the handle, but to control the pressurization intensity and pressurization time for different rock and soil bottom layers. The routine is as follows: lifting suspension point floating long floating point pressurization short stroke pressurization long stroke
2018-08-16
15
2018-08
Use of Heavy-duty Triangular Groove Drill Pipe
Overview of 1. Product Performance Heavy-duty triangular grooved thrust slag discharge drill pipe, referred to as heavy-duty triangular grooved drill pipe, is a new type of drilling tool product newly developed by our company for coal mine tunnel drilling and gas drainage drill pipe in this coal seam. It has a wide range of adaptability to the formation conditions of coal seam hardness coefficient. The products produced are respectively external triangular transmission type grooved drill pipe, hexagonal double-pin quick-connect tensile type grooved drill pipe, large and large hole threaded connection type grooved drill pipe, hexagonal double-pin quick-connect tensile type geological spiral drill pipe and other series of products. It is widely used in deep hole drilling construction of high gas coal seam, especially soft coal seam. Under the reasonable design condition of the drill bit diameter difference, the three edges are greasy and stirred to protect the hole.
2018-08-15
14
2018-08
1. drilling structure 1. Definition: refers to the change of hole diameter and length from opening to final hole. That is, the technical profile of the borehole. 2. Contents: including drilling diameter, number of diameter changes, number of layers of casing, pipe diameter, length and depth of diameter change, water sealing method at the bottom of casing, etc. 3. Requirements: Under the premise of ensuring the quality and safety of drilling, high-quality mud, cement slurry or chemical slurry shall be used as much as possible to protect the wall and plug the leakage, and strive to reduce the diameter change, reduce the casing or not, and simplify the drilling structure to the greatest extent. 4. The purpose of running casing: to isolate complex formations. 5, in the following cases, often need to change the diameter and into the casing: ① drilling loose gravel
2018-08-14
