Hydraulic piston pump closed power liquid system

Because of the small power liquid tank, the system is suitable for oil well, offshore pumping well and densely populated area. For example, in California, the United States, fuel card management system , because many wells located in the towns and offshore, so widely used closed system. In most cases, the closed hydrodynamic system uses water as the power liquid, because of the small friction, the small risk and the little influence on the environment.

However, the use of water as power, automatic fuel dispenser need to add lubricant, and the need for anti-corrosion treatment, these will increase the cost of production management.

Hydraulic piston pump stroke

The main control valve is at top dead center. High pressure power liquid from the central tubing through the channel a into the liquid motive cylinder. The main control valve blocked channel B, hydraulic piston pump , the high-pressure power fluid can not enter the cylinder hydraulic motor.

The annular space liquid motive cylinder through the channel of D, main control
valve spool of central h and extraction of crude oil to communicate. In the fluid motive, the pressure difference of the cylinder, fuel dispenser pumps ,the liquid motive piston drives the piston upward movement of the pump.

The spent hydrodynamic fluid and the extracted crude oil were raised to the ground after the tank was worked in the cylinder.. When the piston rod close to the top dead center, hand gasoline pump and the lower control slot f the main control valve spool chamber and extraction of the oil phase communication, the main control valve spool were pushed to the bottom dead center, and the motive fluid to start into the next stroke, punching process will come to an end.

Hydraulic piston pump system components and working principle

The underground part of the main unit of hydraulic piston pumps, it was motivated by the three components of hydraulic piston pump and the slide valve control mechanism, automated fuel management system ,which played a major role in pumping the oil.

The ground segment from the ground power pumps, control valves and all kinds of power fluid handling equipment, gasoline flow meter etc., play a role in handling the power supply and liquid.

Middle section with a central power supply of crude oil and oil pipe and worked together with the lack of power was returned to the specialized channel ground.

Works (Working Principals), ground power fluid pressure tubing or special power delivery catheter, fluid power is transmitted to the downhole fluid motor at reversing the slide valve control mechanism, power fluid drive fluid motor, hydraulic motor reciprocates, hydraulic motor driven pump through the piston reciprocating motion,  storage tank calibration methods ,lifting crude oil is pressurized.

Closed power fluid system of hydraulic piston pump

In most cases, the closed water system for power fluid power fluid, because compared to water and oil, the frictional resistance is small, the risk of small, less impact on the environment. But water as the power fluid, you need to add a lubricant,  fuel dispensing pump and the need for anti-corrosion treatment, which will increase the production and management costs.

To adapt to the conditions, the reservoir depth and displacement range; wax; heavy oil; inclination. The main drawback, mechanical fuel level gauge ,the unit complex, high precision machining.

Hydraulic piston pump system up stroke

Master slide valve is located on the dead. High pressure power fluid through the passageway from the center of the tubing into the liquid motive under a tank. Since the master control slide valve blocked passage b, fuel card management system ,the high-pressure liquid motive power fluid can not enter the tank.

The motive fluid cylinder through the passage d, the master slide valve h in the middle of the annular space to communicate with the extraction of crude oil phase.

On the motive fluid,  portable fuel transfer pump ,under the action of the cylinder under pressure, fluid motive driving the plunger upward movement of the piston pump.

He worked on the cylinder hybrid and lack of liquid crude oil lifted to the ground after extraction. When the piston rod near the top dead center, the lower part of the control slot f the lower chamber of the main spool and extraction of crude oil relative to communication, main spool will be pushed down dead, but was motivated to re-start into the next stroke ,  storage tank calibration methods ,the stroke is ended.

Hydraulic piston pump system down stroke

Master slide valve located in the dead center. In this case, high pressure power fluid through the passageway from the center of the tubing into the next cylinder liquid a motive, portable fuel transfer pump ， the end surface of the piston ring action; at the same time, high pressure power fluid into the chamber through the channel b c, d and then by passage into the motive fluid to the cylinder, in the upper surface of the piston.

Because the piston, under the effect of the two ends of different sizes to produce pressure, motivated by the liquid pump plunger downward. Piston rod is actually an auxiliary control slide valve on the shaft, automated fuel management system ，the lower part of the control slot opened e and f.

When the piston rod near the bottom dead center, the upper control channel e communicate on the master slide valve, storage tank calibration methods ，the lower chamber c and g, a high-voltage power fluid from the control into the main grooves e of the lower end of the slide valve chamber g.

Since the end face of the main spool area under an area larger than the upper end, the role of power fluid under high pressure is generated pressure, cause the main control spool to the top dead center,  fuel card management system ，thereby completing the down stroke.

Hydraulic piston pump production systems Classification

(1) according to the number of classification systems well single-well process systems; centralized multi-well pumping systems; hydraulic piston pump ,large centralized pumping system.

(2) Press the power fluid circulating classified, closed loop: the power was not mixed with the produced fluids. Open cycle,  tank automation system the power output was mixed with liquid.

(3) the nature of power by hydraulic power fluid classification crude oil hydraulic piston pump system water-based hydraulic power fluid piston pump piston pump hydraulic lift system concepts hydraulic piston pump is a hydraulically operated rodless pumping equipment, which is powered pump from the ground the tubing or through a dedicated channel pressurized fluid is pumped back underground power, automatic vehicle identification system drive motor down reciprocating motion, power was transferred to the high-pressure cylinder and valve driven underground, to help downhole pumping piston.

A bit of oil per day Tips

At present, fuel dispensing equipment domestic mechanical recovery means is divided rod pumps and rodless pump two categories. Rod pump driven by pumping ground power equipment and drive through deep-well pump rod. No sucker rod pump to deliver power without the aid of pumping equipment.

Currently, many types of non-rod pump, such as hydraulic piston pumps, electric submersible pumps, automatic vehicle identification system ,jet pumps, peristaltic pump, screw pump.

Hydraulic piston pump note

Production Engineering, 11-15, chap4, no rod pumping, including electric submersible pumps, hydraulic piston pumps, hydraulic jet pumps. Electric submersible pump (ESP),hydraulic piston pump , a device with a simple structure, high efficiency, large displacement, high degree of automation is widely used in high-yielding non-flowing wells, including wells and offshore oilfields high.

Statistics show that the average fluid production electric submersible pump is more than two times that of conventional rod pump.submersible fuel pump

This morning even have a foreign stranger to me chat client requires hydraulic piston pumps. This initiative fingertips worry haha. . . . portable fuel transfer pump ,censtar released products also received a customer inquiry. Chat with foreigners feel good ah ~ ~ ~

Advantages of screw pump system

(1) small-time investment. Electric submersible pump, hydraulic piston pumps and beam pumping unit chain compared screw simple structure,fuel dispensing machine the minimum time investment.

(2) pump efficiency, energy-saving effect, low maintenance costs. Because screw workload stable,gas transfer pump , small mechanical losses, pump efficiency up to 90%, machinery and production equipment in the existing minimum energy consumption, one of the most efficient models.

(3) small footprint. Ground screw device is simple and easy to install.

(4) for heavy oil recovery. In general,gas station dispensers , screw suitable viscosity for 8000mPa · S less crude oil, and therefore the majority of heavy oil can be applied.

Compared with other artificial lift methods,screw pump system

(1) meet the high sand wells. Theoretically, the screw can transport amounted to 80% of mortar sand,hydraulic piston pump , sand down in crude oil amounted to 40% of the cases may be normal production (except sand buried situation).

(2) adaptation does not happen with high gas screw air lock, and therefore more suitable for mixed transportation of oil and gas,submersible fuel pump but the downhole pump inlet of free gas will affect the volumetric efficiency.

(3) suitable for offshore oilfield cluster wells and horizontal wells group. PCP can be under the slant hole section,gear type pump and small equipment footprint, making it suitable for offshore oil.

Momentum transfer pump

Rely blades rotating at high speed or high-speed jet, the momentum transfer to the gas or gas molecules,gas transfer pump , so that continuously transferred from the gas inlet to the pump outlet. Such pumps can be divided into the following form,

 Molecular pump
It is the use of high-speed rotation of the rotor to transfer momentum to the gas molecules, and thus obtain the orientation speed,automated fuel management system , so as to be compressed, is driven towards the exhaust port of the preceding stage is drawn away after a vacuum pump. This pump concrete can be divided into,

1) traction molecular pump and high-speed movement of gas molecules collide and get momentum rotor is driven to the pump outlet.

2) turbo molecular pump by high-speed rotation of the rotor blades and the stationary blade with each other to achieve a given pumping. Such pumps are typically operate at the molecular flow state.fuel dispensing pump

3) It is composed of complex molecular pump turbo molecular pump and traction type two series combination of a complex type of molecular pump.

Can ordinary centrifugal transfer gas ?

Centrifugal impeller is rotated and the water use of centrifugal movement to occur work. Before starting the pump,gas transfer pump must be filled with water suction pump casing and the inner tube, and then start the motor, so that the shaft drives the impeller and water to make high-speed rotation, centrifugal movement of water occurs, thrown to the outer edge of the impeller,hydraulic piston pump the volute casing pump flow Road inflow pump pressure water line.

The basic structure of the centrifugal pump is composed of six parts,respectively impellers, pump, pump shaft, bearings, seal rings, stuffing box. So ordinary centrifugal pump can transport gas it? The answer is no. This is because as ordinary centrifugal blade is thick airfoil does not apply to transport gas.

The direction of rotation is not right,submersible fuel pump tightness worse, can not for the transmission of gas. Leaves transporting gas is generally thin and narrow, curved and twisted airfoil.

The suction pressure of hydraulic piston pump

At present, hydraulic piston pump oil pumping process has been batch application. Downhole pressure measurement more difficult. In order to meet the analysis of oil well production and oil field development management requirements, hydraulic piston pump ,this paper proposes to use the calculation method to obtain the bottomhole pressure data, and introduces how to determine the accuracy of the related parameters calculation, and in order to improve the calculation formula.

   From the list a few export pump suction pressure data visible, the measured and calculated
values of absolute errors, automated fuel management system the vast majority are + 0.2MPa or so, prove it is feasible and
reliable calculation method.

Development and application of concentric tube column closed hydraulic piston pump

With the rise of water cut in the formation, hydraulic piston pump the existing open type hydraulic pump gradually exposed to high power fluid disposal cost, imprecise measurement of produced fluid and short service life of downhole pump and so on.

The newly developed 50mm concentric tube column closed hydraulic piston pump, using double
concentric tube column structure,  external gear pump ,lack motive fluid into the downhole driving close type pumps from inner tubing, lack motive liquid returns to the ground from the annular space between the inner tubing and outer tubing after repeated use.

Because lack motive liquid is not mixed and produced fluid, no need to process it. The experiment and application results show, fuel card management system various technical indicators have reached the design requirements of the pump. The closed pump power fluid costs about open pump 38%, the pump inspection period is 3.6 times the pump.

Note disassembly and re-install a small tanker pump

First, install the portable fuel transfer pump cover. Copper jacket should be coated with a little grease in order to assemble the skeleton oil seal and protection. When assembling the pump cover screws, should be strictly in accordance with the order of twice the diagonal tighten each screw tightening torque knob should be basically the same, so as not to pump cover and pump combination Mifengbuyan.
Secondly, before disassembling the pump cover, must be sanded Woodruff keyway on the shaft, so as not to dismantle the pump cover scratches on Woodruff keyway burr seal, causing leakage.
Again before the pump is attached to the splitter should carefully check the pump pad is damaged, whether upside. Pump installed, should ensure that the center plane of symmetry pump pulley and motor pulley central plane of symmetry in the same plane, pulley does not allow a clear swing and axial runout phenomenon.
At the same time the rotor assembly into thegas fuel pump chamber, the application of hand (or stuck with a stiff shaft keyway hand) rotating rotor blades closer look at whether the retractable blade slot, while up to see if the rotor blades. If the blade above the rotor blades shall be polished. So that high or slightly below the rotor and the rotor.
And before servicing must be reliably cut off the power. Remove the belt from the pulley, so as to avoid accidental injury. Ready tipping the oil container to avoid pump and oil separator inside leak spilled everywhere. Finally, before you re-install the pump, use kerosene to clean the parts, do not allow any dirt sticking to avoid scratching the pump, resulting in a new fault.

Verification of temperature on several issues tanker

1. Selection of the thermometer. JJG443-2006 auxiliary fuel dispenser suppliers requirements thermometer measurement range of -25 ℃ ~ 55 ℃, minimum scale value 0.2 ℃. But now most of the measurement technique used in the actual work organization inexpensive glass thermometer, this thermometer has the following defects: ⑴ fragile glass thermometer; ⑵ glass thermometer inside the oil temperature gauges inconvenient; ⑶ glass thermometer bulb reaction slower. Therefore, it is recommended to select digital display platinum resistance thermometer, indexing the minimum value of 0.2 ℃, the measurement range of -30 ℃ ~ 60 ℃, the use of platinum resistance temperature sensor, built-in battery power, the length (50 ~ 70) cm Stainless Steel Pipe protection, not damaged, eye-catching display, rapid, accurate and convenient.
2. Temperature measurements.
2.1 muzzle oil temperature measurements. When measuring the temperature of the oil gun, oil oiling the metal gauges should always flow from excessive temperature thermometer segment, oil temperature muzzle distance of about 1cm, when the thermometer showing the value of a steady and rapid reading (or tanker Indication measurement of 50% to 70% metal Tank capacity), the recording data.
2.2 Metal Tank oil temperature measurement. When measuring the automatic fuel dispenser temperature gauge metal, glass thermometers, oil lines in the upper rope thermometer, temperature segment can reach the central metal gauges limited (you can stick in the other end of a rope, slightly longer than the overflow cover diameter measurement gauges prevent metal thermometer fall), holding a rope into the metal thermometer gauges, temperature gauges central metal segment arrives late after (3 ~ 5) min thermometer bulb section exposed in front of the liquid quickly reading, recording data.
Another method: When the metal gauges measuring emissions of oil, when the oil into about half of the measured temperature in 盛油容 vessel; or when metal gauges discharge of oil, the thermometer temperature gauge section from row was measured at the mouth about 1cm, until the thermometer shows stable reading value, in order to replace the oil inside the metal gauges.

When refueling operation, the noise and vibration is relatively large.

1, nozzle pump separator filter clogged pipeline is too long, too small and cause vane pump load increase, noise; 2, vane pump relief valve stuck open or adjustment screw up too tight cause; 3, vane pump vanes stuck, leading to increased oil output ripple extent, so that the machine-generated noise and vibration; 4 blades or spring (film) is damaged, causing the tanker noise increases; 5, Zhang belt too tight, sliding vane pump bearing wear, resulting in increased noise tanker; 6, the machine pipe vibration, the solution is to replace the shock hose; 7, when the natural frequency of the output pulse frequency and the oil tanker similar, will lead to the fuel dispensing pump, noise and vibration increases. The workaround is to adjust the vane pump relief valve or replace the oil and gas division, with the racks from vibration pad; 8, motor noise increases. Replace the explosion-proof motor; 9, to the corner of loose bolts or other fasteners tanker loose. Re-tighten the bolts to the corner with the other loose fasteners.

When you start refueling tanker, the flow rate is slow

A mechanical pump filter clogging (including cone filter and oil filter gun); 2, tanker or pipeline leak components lead to a lot of air into the gas into the vane pump Separator greater than the maximum amount of gas. Boot test, oil separator exhaust pipe will exhaust blows, and depending on the oil at a large number of bubbles. Maintenance should first check whether the parts tanker leak exists, then check the oil line and bottom valve Mifengbuyan problem; 3, vane pump failure; ① vane pump or pump relief valve closed lax anti-pad wear, damage is also one of the reasons for the slow drain vane pump; ② badly worn blade or vane pump with debris stuck to the blade, resulting in the individual blades can not pop, but also make the inner vane pump discharge increases, the oil tanker discharge rate change slow. 4, oil separator fault ① oil separator or small float off into the oil, a normally open valve leading to insufficient pressure hyperbaric chamber; ② oil separator too much debris in the lower part of the oil valve resorted to the oil valve can not be effectively open; ③ manual gas pump separator pressure pad superstructure damage, resulting in insufficient pressure hyperbaric chamber Mifengbuyan, drain slower.

Hydraulic piston pump

Work process just to make a small amount of supplement. Hydraulic piston pump can be operated single-well, you can also build gear type pump centralized management, a wide range of displacement adaptation, from tens to thousands of cubic meters per day, etc., suitable for deep, high-lift wells, heavy oil, inclined. The advantage is the displacement can be adjusted, from the convenience of parts for pumps tubing can not afford the operation and management. Pump efficiency up to 85%. The disadvantage is that the ground have to build a high-pressure pipelines, power fluid to be processed, an increase of well construction and management costs.