Rodless Reciprocating Oil Submerged Electric Pump
Rodless reciprocating oil
submerged electric pump is a new type of revolutionary oil recovery equipment,
this product shall be submerged into oil fluid through underground casing pipe,
rotor of linear motor shall drive the push rod of plunger oil-well pump, the
oil fluid in the pump cavity of oil-well pump is lifted to ground surface by
pulse means, lifting oil recovery is realized, and the mode of oil recovery by
balance beam pumping unit which has been utilized for hundred years is
thoroughly changed.
Advantage
of the product:
The greatest feature of this product is having thoroughly solved
the
problem of eccentric wear of pipe rod that was never overcome
by
oilfield: sucker rod is not used, therefore, there is no phenomenon
of
eccentric wear of pipe rod, the interval between pump checking is
prolonged,
the time of maintenance operation is reduced, the fluid
producing
quantity is increased and the cost of oil recovery is decreased.
＜Energy-saving and high efficiency＞
With its intermittent working
characteristics, it only consumes
electricity
at the time of working, and about 50% of electric power can
be
economized on the average. The rotor of motor directly drives the
push rod
of plunger pump, there is no loss of stroke and pump efficiency,
therefore,
the pump efficiency can attain 60%---90%.
＜High tech＞
Various criteria
of manufacture technique for existing product are
all more
than two-fold of the existing downhole pump criteria, the
maintenance-free
period of the product is 1～3 years, and that has
reached
advanced level of technique in the oil recovery industry worldwide.
＜Steel Saving＞
The weight of Model 12 balance
beam pumping unit are 66,000 lbs, the sucker rods are 13,000 lbs for 6000 ft
well. Total steel weight are 79,000 lbs. But the weight of this product is only
2,200 lbs. We save more that 70,000 lbs steel for one well.
＜Environmental Friendly＞
Rodless reciprocating submerged
electric pump shall be submerged the down hole, there is no phenomenon that
destroys environmental protection on the ground surface, such as oil leakage at
the packing of sucker rod, etc., the requirements of environmental protection
is attained, and the issue of environmental protecting oil recovery at shallow
sea, river and stream shore is solved.
＜Wide Applications＞
It applies to existing oil wells:
straight well, deflecting well, high-angle
well, horizontal well, deep well, oil well with low permeability and small
displacement, since no oil leaks at the well head, environmental protecting oil
recovery can be realized for oil well at shallow sea, river and stream shore,
it specially applies to low yield oil well, and the cost of oil recovery is
reduced obviously. In addition, it can realize secondary development of
abandoned oil well with low cost, so as to provide new solution for underground
petroleum production.
Application
circumstance:
Hundreds of this product have been
batch used in Daqing, Jilin, Liaohe, Dagang, Shengli, Henan, Changqing,Yanchang
and Huabei Oilfields of China, the maximum maintenance-free operation time has
reached over 800 days, and it has been approved by most oilfields; three giant
state-owned petroleum companies, including CNPC, Sinopec and CNOOC, are highly recommending
this product.
Application
examples:
Contrast of data before and after use at 3#
test well of Daqing No. 8 Oil Recovery Plant
|
Test 3# |
Pumping
depth (ft) |
Working
fluid level (ft) |
Daily
produced fluid (pounds) |
Pump
efficiency (%) |
Daily
consumption of electricity(HP-hr) |
System
efficiency (%) |
|
Before test |
4695 |
4219 |
11,000 |
20.2 |
176.8 |
13.5 |
|
After test |
4619 |
2789 |
16,100 |
75.3 |
128 |
18.3 |
This new type of
oil recovery equipment
was developed in 2005
-- rodless reciprocating oil submerged electric pump. Through five years of
R&D----trial-production----small batch trying out----trying out at multiple
oilfields, tracts and oil wells, R&D team of the company has improved the
technology and perfected the technique, and the product has entered status of mass
production.
Intellectual
property right:
This product is patented in
