Journal of Chongqing University of Science and Technology (Natural Science Edition) Development of KY100/30Q Air Flow Unit for Large Flow Drilling Huang Xiaobing, Wu Mingzhang 2 (1. School of Mechanical Engineering, Panzhihua University, Panzhihua, Sichuan 617000, China; 2. Sichuan Honghua Petroleum Equipment Co., Ltd. Chengdu R&D Department, Chengdu 610036) Development of body drilling technology. In order to solve the above problems, the KY100/30Q high-flow drilling air compressor unit was designed. The device is equipped with three screw air compressors in one unit. It is driven by three inverter motors and independently controlled. It has large gas production and flow. Accurately adjustable, compact structure, low operating noise, etc., can reduce the number of gas drilling hollow presses, reduce equipment footprint, reduce the difficulty of equipment migration, and promote the further development of gas drilling technology. Gas drilling has the advantages of fast drilling speed, short drilling cycle, effective protection and discovery of oil and gas layers, overcoming well leakage, preventing water-sensitive mud shale collapse and prolonging the service life of drill bit, etc. It provides important for exploration and development of fractured and low-pressure reservoirs. The technical means has great demand and broad development space in China. E4. Air compressor is the core equipment of gas drilling. Screw air compressor is the most used gas drilling operation, mainly using diesel engine as power source. The air production of a single air compressor is small, and multiple units need to be deployed in gas drilling, and it mainly relies on imports. Therefore, the problems of high equipment cost, large volume and unsatisfactory after-sales service restrict the development of China's gas drilling technology to a certain extent. 1 The status of domestic air compressor air compressors Domestic air drilling air compressors are mainly imported from Atlas Copco and SULLAIR CORPORATION, with a total of more than 500 units. These air compressor output pressures In 2~3MPa, the displacement is 25~40m3/min. The domestic air compressors for gas drilling mainly include Tianjin Kaide Industrial Co., Ltd. and Chengdu Natural Gas Compressor Factory, and Tianjin Kaide Industrial Co., Ltd. It is mainly assembled by American life oil engine. The air compressor produced by Chengdu Natural Gas Compressor Factory is mainly assembled by Atlas Copco Xrv12 air compressor and Caterpillar C15 diesel engine. At present, Zhejiang Kaishan Compressor Co., Ltd. has developed a high-pressure large-flow screw compressor that can be used for gas drilling. AtlasCopco large air compressors in the application range / underbalanced drilling (including: 60 Sinopec Materials and Equipment Department, 83 Chuanqing Drilling and Production Research Institute, 22 Daqing Oilfield, 5 Liaohe Oilfield, 2 Karamay Research Institute, other 40 blasting engineering pipeline engineering rescue construction other applications in gas drilling, the required gas injection volume is generally 100 ~ 200m3 / min, or even higher, there is no direct supply of such large flow gas drilling air at home and abroad Compressor device. The usual practice is to use 4 to 10 screw air compressors in parallel to meet the gas flow requirements of gas drilling. Therefore, the number of gas equipment used in gas drilling is large, the transportation is difficult, and the equipment is occupied. Huang Xiaobing, et al.: KY100/30Q large-flow drilling air compressor unit development drive motor working characteristic curve using variable frequency speed control asynchronous motor can be matched with mud pump frequency conversion controller to adjust the speed of any one of the motors to achieve the screw machine The head gas production is adjusted to better meet the gas injection process requirements for gas injection. 3 key parts 12 screw head, see the working characteristic curve. The rod rotation speed / ORX12 screw head working characteristic curve KY100/30Q large flow drilling air compressor unit uses three frequency conversion speed asynchronous motors as the power of three screw heads, and each drive motor runs independently. The motor has its own cooling fan, forced air cooling, insulation grade: H grade; working system: S1; protection grade: IP44 (main body), IP55 (junction box); insulation grade: H. Adapt to gas drilling operation conditions and environment, drive See the motor operating characteristic curve. The large area of ​​the ground leads to high gas drilling costs. The development of large-flow air compressors not only reduces the number of air compressors and the area occupied by the wellsite, but also reduces the difficulty of equipment migration and reduces the cost of gas drilling operations. 2 Overall plan and technical parameters 2.1 Overall plan KY100/30Q large-flow drilling air compressor unit uses variable frequency motor instead of diesel engine as the power of screw air compressor. Because the motor has low noise, small vibration and light weight, it also saves. The sound insulation cover, muffler, fuel tank and cooling of the diesel engine simplify the structure of the whole device and reduce the vibration, weight and noise of the whole device. The variable frequency motor also makes the flow of compressed air of the whole device easy to adjust accurately. Good to meet the process requirements of gas drilling. At the same time, using modular design ideas, three screw air compressors are collectively installed in parallel as air compressor units () to increase the gas production of a single air compressor unit and reduce the use of air compressor units in gas drilling. The amount of gas equipment is reduced. 2.2 Technical parameters The technical parameters of the KY100/30Q large-flow drilling air compressor unit are: KY100/30Q large-flow drilling air compressor unit only needs to be equipped with 2 units (net area) when implementing gas drilling operation with electric drilling machine. About 50m2) can meet the gas injection requirements. Huang Xiaobing, et al.: Development of KY100/30Q large-flow drilling air compressor unit KY100/30Q high-flow drilling air compressor unit control cabinet adopts RS-485 communication interface, which can be integrated, high reliability, high cost performance, LCD Chinese and English display, the motor has short-circuit, blocking, phase loss, overload, unbalance and other comprehensive protection functions, can start and stop the motor control, anti-reverse protection of the air compressor, multi-point temperature detection With control protection, it can automatically adjust the load rate to control the pressure balance, and has remote/machine side selection control and linkage/independent selection operation. In order to effectively control the noise of the KY100/30Q large-flow drilling air compressor unit, the sound insulation door panel and the top sound insulation shed are designed around the stern seat. The door panel is equipped with a sealing strip, and the hood is provided with sound absorption treatment and has a firm surface. Floor. Minimize pipe elbows, smooth transitions between pipes, and maximize the elbow radius. A fairing of a certain shape is designed at the inlet end of the air cooler fan, and the axial distance between the fan impeller and the cooler is appropriately increased. In addition, the drive motor and the screw head are flanged to ensure axial alignment and transfer torque to reduce the accuracy of the boring. 4 Conclusion KY100/30Q large-flow drilling air compressor unit puts three screw air compressors into one unit, three frequency conversion motors are driven separately, independently controlled, with large gas production, precise flow adjustment and compact structure. The characteristics of low noise operation can reduce the number of gas equipment used in gas drilling, reduce the equipment footprint, reduce the difficulty of equipment migration, and reduce gas drilling costs. Di-Tert-Amyl Peroxide,Luperox Dta,Tert-Amyl Peroxide,Di-T-Amyl Peroxide Jiangsu Zhongluman New Material Technology Co., Ltd , https://www.zlmchemical.com