Hydraulic pumping unit

Brief introduction of hydraulic pumping unit

Pumping unit is the main equipment for extracting oil and gas in oil fields. With the development of the petroleum industry, the development of deep oil reservoirs, low-permeability oil reservoirs, heavy oil reservoirs, and unconventional oil and gas fields has come up with higher performance Requirements for required oil production equipment The traditional beam pumping unit cannot fully meet the needs of oil and gas development and production in the oil fields. Therefore, it is very necessary to reduce the cost of oil and gas extraction, improve the efficiency of oil and gas extraction, and develop pumping units that can meet the actual production needs of different oil and gas fields and can save energy.

The second-generation hydraulic pumping unit system uniquely adopts double-cylinder control and doublewell circulation control circuit, and the two cylinders alternately work up and down to recover the downward energy of the hydraulic cylinder. The gas extraction needs and the operation is stable and reliable.

Due to the advantages of small size, light weight and flexible transportation, the hydraulic pumping unit is very suitable for areas where large-scale vehicles such as coal bed methane and tropical rain forests are difficult to pass. The hydraulic pump unit system can also use the gas unit to directly drive the hydraulic system according to the actual situation on site, which reduces the installation of power cables.

Characteristics of the hydraulic pumping unit

1. A group of pumps, two cylinders and two wells are used to control the circuit. The two cylinders alternately operate up and down, taking full advantage of electrical energy and gravitational potential energy. When the hydraulic cylinder rises, it is driven by the hydraulic system. oil to work up, and when the hydraulic cylinder goes down, it is pulled by the sucker rod. When working downward, the gravitational potential energy generated by the downward movement of the sucker rod is converted to hydraulic energy, which significantly reduces downforce. The support power of the double well group is about 80% of the matching power of a single well with the same charge, which has significant economic and social benefits.

2. The hydraulic control unit is modularly combined. Different module combinations can realize simultaneous control of two wells, four wells, six wells, eight wells and ten wells in one station, which is especially suitable for blocks with concentrated wells.

3. The whole machine is automatically controlled by electro-hydraulic integration. The hydraulic system adopts electro-hydraulic proportional variable technology to control the up and down running speed of the hydraulic cylinder, and the stroke times can be adjusted steplessly. The best combination with driving power, stable and reliable operation and direction change, and single well and double well switching operation.

4. With the addition of different electrical control modules, it is convenient to realize on-site and remote operation parameter setting, remote monitoring operation and data collection.

5. Different strokes and stroke times can be obtained by inputting different parameters from the controller, and the stroke and stroke times are easy to adjust.

6. It can realize the operation of large load, large stroke and low stroke frequency, and can maximize the production capacity of the oil well. The mounting of the suspension point can be selected between 30 and 400 (KN). The suspension stroke can be selected between 1.8 and 10 (m).

7. The hydraulic pumping unit is compact in structure, small in size, light in weight and small in floor space. It is especially suitable for small gaps between wells, tidal flats, offshore platforms, and wells in mountainous areas. You don't need to install a platform, which can greatly save the total cost.

8. There are no moving parts around the hydraulic pumping station and hydraulic cylinder of the hydraulic pumping unit, so there is no need for safety protection at the well site, and the operation is safe and reliable. The hydraulic station room can be treated to reduce noise, and the noise of the whole machine is low, which is especially suitable for installation and operation in residential areas and well sites around cities.

Resume

With the gradual deepening of the development of oil and gas resources, the oil fields are gradually changing from extensive development to refined and civilized development. Oil drilling equipment is being developed from few varieties, low load, short stroke and manual inspection to diversity, automation, intelligence, large load, long stroke, low stroke frequency and energy saving; reduces oil and gas extraction costs and improves pumping units It is a trend of the times to adapt to the working conditions of different types of oil wells and optimize the operation of oil production equipment. The successful development of the hydraulic pumping unit simply conforms to this development trend and enriches the varieties of oil and gas extraction equipment.

The machine has a compact structure, small footprint and low total equipment cost to meet the needs of various oil fields; it has a high degree of automation, convenient adjustment of stroke and stroke times, and is convenient for centralized management of the network. You can do big loads, big strokes and low stroke times. You can take full advantage of the production capacity of oil wells; it has a good energy saving effect and low operating cost; It has significant economic and social benefits, which can not only meet the needs of refined and civilized development of oil fields, but also meet the national energy saving and emission reduction guidelines and policies.

To illustrate

1. The stroke and stroke times are infinitely adjustable within the range of 0-maximum value, as the stroke decreases, the maximum stroke times increase accordingly, please refer to the instruction manual;

2. The maximum lifting load under rated pressure refers to the load that can be lifted by a single machine in an unbalanced state after operation;

3. The equivalent rated lifting capacity refers to the equivalent balanced lifting capacity of the pumping unit after long-term operation;

4. For detailed parameters, please refer to the design manual or operation manual;

5. The above parameters are only used as a reference for user selection. If there are special requirements for stroke and stroke times, the corresponding parameters can be determined according to user requirements and actual working conditions.