Zhongyuan Petroleum Exploration Bureau Machinery Manufacturing Plant of the original pump group is powered by PZ12V190B diesel engine, through the cardan shaft, linkage unit, and then transmitted to the form of the triangle belt 3NB21300-type drilling pump, the structure shown in Figure 1. The large unit structure, transportation difficulties, and poor performance of diesel speed, can not meet the needs of drilling workover process. And due to the reliability of diesel engines, linkage poor, frequent downtime maintenance situation, to the user caused many unnecessary losses. According to the current drilling needs of the Central Plains Oilfield in Indonesia and Saudi Arabia, we developed a new type of TJBZ01 trailing pump group on the basis of the original pump group. This type of pump group has the advantages of superior performance, reasonable structure and good transmissibility. It is suitable for drilling operations in various complicated environments and greatly improves the defects of the original pump group such as complex structure and poor practicability. First, the structural characteristics and main technical parameters 1, structural characteristics TJBZ01 type trailer-mounted pump group using Cat Company 3412E EFI diesel instead of domestic PZ12V2190B diesel engine as a power machine. The machine is small in size, light in weight, high in mechanical efficiency, low in fuel consumption, convenient in use and maintenance, good in emission characteristics and superior in cold start performance, and can meet the requirements of F2800 type or F21300 type mud pump under various working conditions. The pump group is equipped with BY801D hydraulic transmission instead of JS321000-type reducer and linkage device, which uses a single-phase to the heart of the three-phase integrated with torque converter, planetary gear mechanical transmission, hydraulic control system with load Change, can automatically switch to torque or lock condition "This configuration not only greatly reduces the volume, but also take advantage of BT801D-type hydraulic transmission speed governing characteristics to meet drilling conditions in different conditions of the drilling fluid displacement Different from pressure requirements "The hydraulic transmission offers 8 speed gears. Use F2800 or F21300 mud pump instead of the original 3NB21300C mud pump. This type of drilling pump with light weight, advanced structure, uniform displacement, easy maintenance and so on. The pump group uses V251.5 universal coupling coupling hydraulic torque converter output and mud pump input shaft, thus replacing the original V-belt drive. Shorten the transmission distance, improve the transmission efficiency and prolong the service life. The pump configuration 30t high and low semi-trailer chassis, the chassis girder 450mm welding process steel, double bridge using ZS12B-type structure, the selection of 11.00220 Yellow tire, dual-chamber brake. In order to increase the stability of the entire unit, the arrangement of six Fuwa 28t bearing leg device, symmetrical arrangement, the long-term operation of the entire unit off the ground "for transport operations, with a Mercedes-Benz tractor pump group Front 50 # traction pin, take-back device can be long-distance driving. 2, the main technical parameters Chassis type 30t high and low double bridge semitrailer chassis double axle wheelbase 1300mm Trailer Mercedes front traction 50 # traction pin revolving radius 2200mm Diesel engine Model Cat3412E Hydraulic Transmission Model BY801D Drilling Mud Pump F2800 or F21300 Universal Coupling U251.5 Dimensions (L × W × H) 11700mm · 3000mm · 1400mm II. Power transmission process When the pump group works, the diesel engine The resulting power through the hydraulic transmission torque, through the coupling to the drilling pump, in this Will be converted into rotary motion reciprocating motion, the mechanical energy into hydraulic energy, that is generated from the diesel engine y hydraulic transmission (variable speed, torque) y universal coupling y drilling pump. Third, the use of 1999 from 1999 A Taiwan TJBZ01 trailing pump group has been used in the DuRi and Minas fields of Indonesia since the Saudi Aramco "China 2" drilling crew has been using eight units. According to the user feedback, the TJBZ01 type pump set is running Stable, reliable and easy to operate. It not only lightens the labor intensity of the staff, improves the working environment, better meets the requirement of drilling parameters for drilling and workover well, and also has very good transmissibility. Therefore, the depth (1) Excellent performance, high reliability, less wearing parts, work in complex environment (2) Advanced and reasonable structure, small size of the whole set of equipment, light weight diesel engine, transmission , Coupling, drilling pump are placed on the car chassis compact and reasonable "(3) easy installation and maintenance! Low cost, does not require complex foundation installation fixed Jane , Long life, easy maintenance and repair. (4) good transportability, the use of trailer-mounted structure, transportation and mobility flexible.