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API Pumping Unit
ShengjiPetro has strong capacity of research, design and manufacturing pumping unit, the annual production reach 1000 sets; the company has welding and machining workshop 17,942 square meters, take up 64,952 square meters, complete inspection and test equipment, and has more than 130 types of advanced production facilities.
ShengjiPetro has 20 years of API 11E oil pump jack experience.
American Petroleum Institute member unit.
According to the API SPEC 11E standard and GB/T29021-2012 Beam Pumping Unit standards.
Conventional API Pumping Unit
ShengjiPetro has passed ISO9001, API Q1, API11E, ISO14001 and OHSAS18001 certificate.
ShengjiPetro adopted the principle of combining API Standard, National Standard and User’s view to design.
Using AutoCAD, Solid Works computer software to design drawings, using virtual prototype technology to simulate and verify strength.
RM pumping unit is designed on the basis of conventional beam pumping unit, which can change the time of up and down stroke of the pumping unit and is suitable for heavy oil recovery.
The Jack lift direct-drive pumping unit, AKA Long stroke pump unit, is an innovation in petroleum artificial lifting systems and has become an ideal replacement for traditional pump jacks and ESP. It is a patented pumping unit from Shengji Company, designed to save energy, protect the environment, and improve overall work efficiency.
ShengjiPetro has strong pumping unit design ability. According to API 11E standard and China national standard, ShengjiPetro has designed and developed a series of pumping units according to market demand.
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Shengji API Pumping Unit
ShengjiPetro Pumping Unit Manufacturing Plant is one of the main branches of ShengjiPetro Group. It is a professional manufacturer specializing in the development, design, production, remanufacturing, maintenance, sales and service of pumping units. The factory has 235 employees, more than 130 sets of various large and medium-sized mechanical processing equipment, fixed assets of 12 million yuan, annual output of 1,200 pumping units, and annual sales income of 200 million yuan. It is a pillar enterprise of Shengji Company.
There are 4 senior engineers, 12 intermediate engineers, 7 assistant engineers, 4 senior technicians and 12 technicians in the pumping unit. Intermediate and senior workers account for more than 90% of all workers. The superb technical level of employees provides a technical guarantee for the production of high-quality pumping units.
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How to solve the problems of high energy consumption and low mechanical efficiency of beam pumping units？
A new type of RM pumping unit The beam pumping unit is one of the main types of pumping units currently used in oil fields.
It is mainly composed of four parts: donkey head-travel beam-connecting rod-crank mechanism, reduction box, power equipment and auxiliary equipment.
When working, the rotation of the motor changes into the up-and-down movement of the horse head through the gearbox and the crank connecting rod mechanism, and the horse head drives the plunger of the downhole oil pump to move up and down through the polished rod and the sucker rod, so as to continuously extract the crude oil in the well out of the wellbore.
The beam pumping unit is the main oil production equipment in onshore oilfields.
Its oil production energy consumption accounts for one-third of the oilfield’s total energy consumption.
However, due to its own structure and operating conditions, the average load rate of the pumping unit motor is very low.
The average efficiency is less than 30%. In response to the above problems, scientific and technological workers have proposed and tried a large number of new technologies and new methods.
These technical improvements have improved the efficiency of oil production and energy utilization, but there are also limitations and technical risks.
The energy-saving technology of pumping units mainly includes three aspects: improvement of mechanical transmission structure, improvement of electric motor and its control technology, and addition of energy-saving devices.
The energy saving of the beam pumping unit plays an important role in solving the problems of low profit, energy crisis, and environmental pollution during oilfield development.
Beam pumping units have a huge installed capacity around the world, and it is responsible for one-third of the total energy consumption in oilfields. Unfortunately, the energy efficiency of this kind of artificial lift machinery is obviously low, although there is a certain degree of difference according to various well conditions.
For example, in China, there are at least 100,000 beam pumping units in use, the total installed capacity can reach up to 3500 MW, and the power consumption is approximately more than 10 billion kWh per year.
However, the energy efficiency of this artificial lift machinery ranges only from 12% to 23%.
It is considered that the energy saving of beam pumping units has a lot of room for improvement and a good application prospect.
The energy saving of the beam pumping unit plays an important role in solving the problems of low profit, energy crisis, and environmental pollution during oilfield development.
Beam pumping units have a huge installed capacity around the world, and it is responsible for one-third [6] of the total energy consumption in oilfields.
Unfortunately, the energy efficiency of this kind of artificial lift machinery is obviously low, although there is a certain degree of difference according to various well conditions.
For example, in China, there are at least 100,000 beam pumping units in use, the total installed capacity can reach up to 3500 MW, and the power consumption is approximately more than 10 billion kWh per year. However, the energy efficiency of this artificial lift machinery ranges only from 12% to 23%.
Because the beam pumping unit is restricted by the four-bar mechanism, the stability of its operation process is easily affected by well conditions.
When the downhole load changes frequently, the pumping unit is prone to unstable operation and increased energy consumption.
The tailstock and the walking beam of the pumping unit are connected horizontally. This connection method will cause the stress of the connecting bolts to become worse, which will affect the service life.
In order to solve these problems, Shengji Petroleum has developed a new type of out-of-phase beam pumping unit.
By designing a new structure, the pumping efficiency of the pumping unit is improved, the problem of donkey head falling off is solved, and the service life of the pumping unit is increased.
The new pumping unit consists of donkey head (1), walking beam (3), middle seat assembly (4), tailstock assembly (5), connecting rod (6), rope suspension (7), crank assembly (8), bracket (9), base (10), brake device (11), shield (12), reduction box (13). Compared with the conventional beam pumping unit, the structure of the out-of-phase pumping unit has three changes.
The three-hole connection of the crank pin of the crank assembly (8) and the center line of the crank assembly (8) have an out-of-phase angle β=8～10°.This structure can make the upstroke time of the pumping unit longer, increase the full factor of the pump, and pump more crude oil per unit of energy consumption.
There is an α=15-20° inclined plane at the connection between the tail of the walking beam (3) and the tailstock assembly (5), which can ensure the stability of the four-bar mechanism during the operation of the pumping unit, and at the same time, the impact of the load on the connecting bolt is reduced, and the service life of the bolt is improved.
There is a donkey head safety pin (2) at the joint between the walking beam (3) and the donkey head (1). After the walking beam (3) is connected with the donkey head (1), insert the donkey head safety pin (2) and lock tightly, then the pumping unit will not fall off during operation.
