CN2549176Y

CN2549176Y - Signal-feedback pumping unit

Info

Publication number: CN2549176Y
Application number: CN 02237843
Authority: CN
Inventors: 赵怀文; 刘以争
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-10
Filing date: 2002-06-10
Publication date: 2003-05-07
Anticipated expiration: 2012-06-10

Abstract

The utility model discloses a signal-feedback oil pumping device, which comprises a power pump, a steering valve component, an overflow valve, an electromagnetic valve, a well casing, an oil pump and a power liquid cylinder. The well is internally provided with an external working pipe, a floating piston arranged in an oil pump in the external working pipe is connected with the piston rod of the power liquid cylinder, and the upper part of the power liquid cylinder is provided with an internal working pipe communicated with a liquid pressure pipeline. The ring cavities of the internal and the external working pipes are communicated with the lower cavity of a balance cylinder, and the upper cavity of the balance cylinder is connected with the liquid pressure pipeline; moreover, the oil outlet of the oil pump is communicated with the oil outlet on the external working pipe and extends to the ring oil outtake pipeline between the well and the external working pipe. Overcoming such problems of the traditional oil extractor as large frictional resistance and frequent deformation and breaking as well as dropping of the sucker rod, the utility model improves the working efficiency up to 50 to 70 percent, 2 to 3 times of the traditional oil extractor, and reduces the oil extracting cost. Besides, with simple structure, the utility model can realize centralized management to the balance cylinder, the power pump and the steering valve component above the ground, and is not only applicable to the common oil well, but also to the deep well and the ultra-deep oil well.

Description

Signal feedback formula oil rig

Technical field

The utility model relates to a kind of signal feedback formula oil rig of the usefulness of recovering the oil.

Background technology

The existing history that goes up a century of traditional rod pumping system, this technical pattern is simple, use is reliable.Its consumption accounts for existing more than 90% of whole oil pumpers.But this ancient oil pumping mode efficient is too low, be no more than 20% at most, and the dark more efficient of oil well is low more.The main cause of poor efficiency is the distortion and the frictional resistance of sucker rod.For many years, people constantly study always, update; From the oil pumper aspect, multi-connecting-rod mechanism, secondary balance, two horse head, air-balance, chain or belt oil pumping machine have appearred in recent years, various ways such as hydraulic pumping unit, KCT oil pumper, in the hope of adding long stroke, improve exercise performance, but under the situation that sucker rod still exists, be difficult to increase substantially system effectiveness.Say with regard to the sucker rod aspect that in addition the root problem of sucker rod is its intensity and two difficult problems of fatigue fracture.People constantly study improvement for many years, but the disconnected problem of taking off still fails thoroughly to solve so far, and sucker rod is the weak link of rod pumping system all the time.The power rodless pump of down-hole use at present, for example electric submersible pump, hydraulic piston pump, screw pump etc., as if broken away from the puzzlement of sucker rod pumping, but in the practicality since the life-span short, dependability is poor, and the manufacturing technology difficulty is big, the cost height, can only be used for shallow well or special circumstances, its use amount is a few percent only.Then efficient is lower as for gaslift and jet oil pumping method, is difficult to be used in the deep-well oil pumping.

Summary of the invention

The purpose of this utility model is to design the signal feedback formula oil rig that main part such as a kind of counterbalance valve by kinetic pump, reversing valve assembly, overflow valve, electromagnetic valve, adjustable pressure, one way valve, hydraulic control one-way valve, pit shaft, oil well pump, working fluid cylinder, compensating cylinder, inside and outside instrumentation tubes, packer and power cylinder seat envelope is formed for overcoming above-mentioned deficiency.Improved efficient, reliable operation.

The utility model is achieved in that a kind of feedback information formula oil rig, comprise kinetic pump, reversing valve assembly, overflow valve, electromagnetic valve, wellbore casing, oil well pump and working fluid cylinder, be provided with outer instrumentation tubes in the pit shaft, be loaded on oil well pump in the outer instrumentation tubes the piston that moves about be connected with the piston rod of working fluid cylinder, working fluid cylinder top is provided with the interior instrumentation tubes that is communicated with fluid pressure line; Annular chamber between inside and outside instrumentation tubes is communicated with the cavity of resorption of compensating cylinder, and the epicoele of compensating cylinder is connected with fluid pressure line; The oil-out of oil well pump is communicated with and leads to the annular fuel-displaced pipeline between pit shaft, outer instrumentation tubes with oil-out on the outer instrumentation tubes.

Be provided with packer between pit shaft and outer instrumentation tubes.

Be provided with power cylinder seat envelope between outer instrumentation tubes and piston rod, between piston rod seals with the power cylinder seat for being slidingly matched.

The working fluid cylinder piston is provided with one way valve.

Be connected with the counterbalance valve of adjustable pressure on the electromagnetic valve on control compensating cylinder epicoele liquid road.

The utlity model has following advantage:

1. signal feedback formula oil rig has replaced the big and disconnected easily rod beam-pumping unit that takes off of traditional easy deformation, frictional resistance with working fluid cylinder, fluid pressure line, and production efficiency is brought up to 50-70%.Be traditional oil pumper 2-3 doubly.

2. the down-hole part is two concentric inside and outside instrumentation tubes, and both maintain static the variation that does not have upper and lower axial force, only plays liquid stream and the channeling of signal and the supporting role of underground structure, so do not have fatigue fracture and problem on deformation.Because liquid stream flow velocity in fluid pressure line is slower, thereby flow resistance is lower, energy transfer efficiency has improved, and oil well pump can omnidistance be worked, and does not have " eating stroke " problem that the distortion of similar sucker rod brings.

3. the working fluid cylinder of signal feedback formula oil rig does not have any valve member, and is simple in structure, so reliable operation.Oil well pump is conventional oil pump, kinetic pump, and hydraulic valve bank, electromagnetic valve, one way valve etc. all are that ripe prior art products can be bought in market, so the utility model realizes that easily the manufacturing cycle is short.

Description of drawings:

Fig. 1 is the utility model schematic diagram.

The specific embodiment

Further specify the utility model below in conjunction with drawings and Examples.

Signal feedback formula oil rig (Fig. 1) is by wellbore casing 1, packer 2, oil well pump standing valve 3, the oil well pump piston 4 that moves about, working fluid cylinder seat envelope 7, working fluid cylinder piston rod 9, one way valve 10, working fluid cylinder piston 11, working fluid cylinder 12, interior instrumentation tubes 13, outer instrumentation tubes 14,

reversing switch

17,20, compensating cylinder position control bar 18, collision block 19, compensating cylinder 24, compensating cylinder disjunctor piston 25, electromagnetic valve 26, counterbalance valve 27, hydraulic control one-way valve 28, one

way valve

29,30, kinetic pump 33, reversal valve group 34, electromagnetic valve 35, overflow valve 36, main part such as oil filter 37 and fuel tank 38 is formed.Outer instrumentation tubes is located in the wellbore casing, is provided with the packer 2 of annular between the two so that radially keep uniform distance between wellbore casing and outer instrumentation tubes and shut the interior annular space space, bottom of sleeve pipe.Oil well pump is loaded on the bottom of outer instrumentation tubes, and working fluid cylinder is located at the top of outer instrumentation tubes, and the working fluid cylinder piston is provided with one way valve 10.The oil well pump piston 4 that moves about is loaded on the piston rod 9 of working fluid cylinder, and this piston is provided with oil-out 5 and travelling valve 39.Outer instrumentation tubes is made as stairstepping, in step diameter conversion place working fluid cylinder seat envelope 7 is housed, and the hole of working fluid cylinder seat envelope matches with piston rod and can slide relatively.Working fluid cylinder top is provided with interior instrumentation tubes 13, and its lower end is communicated with working fluid cylinder, and upper end 16 is communicated with fluid pressure line 32.Annular chamber between inside and outside instrumentation tubes is communicated with the working fluid cylinder cavity of resorption through the through hole 8 of working fluid cylinder inferior part of the cylinder block, and the upper end of this annular chamber 15 is communicated with the A1 chamber of compensating cylinder by the road.The upper and lower two sections diameter differences of the cylinder body of compensating cylinder 24, two corresponding pistons connect into compensating cylinder disjunctor piston 25 by rod member, and they form three cylinder chamber A1, A2 and A3.The position control bar 18 of compensating cylinder disjunctor piston upper end is provided with collision block 19, and collision block and upper stroke switch 17, lower stroke switch 20 pressings can realize electromagnetic valve 35 commutations on master control liquid road.The electromagnetic valve 26 on control compensating cylinder liquid road is connected with the counterbalance valve 27 of adjustable pressure.It partly is that L1 and working fluid cylinder partly are L2 that the down-hole part of present embodiment mainly comprises by oil well pump.The top, ground of present embodiment comprises compensating cylinder and pipeline fittings thereof, kinetic pump, reversing valve assembly.Ground and down-hole are connected by the inside and outside instrumentation tubes ring cavity and the interior instrumentation tubes of arranged concentric, the transmission carrier of the passage of liquid stream and power, information about forming.The oil pumping course of work of signal feedback formula oil rig is as follows: when kinetic pump by the reversal valve group, during fluid pressure line 31 outputting power liquid, liquid stream is by pipeline 31, through one way valve 30, one the tunnel enters the A2 chamber, another way solenoid valve 26, the epicoele that enters equalizing valve is the A3 chamber, compensating cylinder disjunctor piston 25 is descending, in 15 inflows by the road of the liquid in A1 chamber, the annular chamber of outer instrumentation tubes, via through holes 8 enters the cavity of resorption of working fluid cylinder, propulsion power piston 11 is up and drive the oil well pump piston stroking upward that moves about, fluid through oil-out 5 and through hole 6 enter wellbore casing and outside between instrumentation tubes annular fuel-displaced pipeline and transport to ground, more than be impulse stroke.During backhaul, power fluid flows out from fluid pressure line 32, and the mouth of pipe 16 through interior instrumentation tubes upper end enters the epicoele of working fluid cylinder, working fluid cylinder descent of piston; And the liquid via through holes 8 of working fluid cylinder cavity of resorption, inside and outside instrumentation tubes annular chamber, pipeline 15 flow to the A1 chamber of compensating cylinder, compensating cylinder disjunctor piston stroking upward, the liquid in A2 chamber flows into pipeline 32 by hydraulic control one-way valve 28 and converges with kinetic pump output liquid stream, and hydraulic control one-way valve is to open under the pressure of pipeline 32.Liquid road, counterbalance valve 27 and the one way valve 29 of the electromagnetic valve 26 of A3 chamber liquid after energising be 31 oil sump tanks by the road again, and backhaul is not bought oil, and is idle running, its speed be impulse stroke 2-3 doubly, it can be realized by regulating counterbalance valve.The effect of one way valve 10 be make working fluid cylinder and compensating cylinder synchronously, the action harmony.Compensating cylinder is guide's cylinder of working fluid cylinder, and both piston present positions are opposite, promptly during compensating cylinder disjunctor piston stroking upward, and the working fluid cylinder descent of piston.The piston of compensating cylinder and working fluid cylinder is not all known wherein when starting working, and particularly working fluid cylinder is in the down-hole.So will make adjusted in concert earlier before the work.Because the weight effect of element, the working fluid cylinder piston may be in position on the lower side.If work beginning back balance cylinder disjunctor piston stroking upward, working fluid cylinder descent of piston.Very fast power liquid cylinder piston just goes downwards to the bottom and can not readvance, and this moment the compensating cylinder disjunctor piston a certain position that mediates, upper and lower stroke switch can not trigger, and can't commutate.At this moment the liquid of working fluid cylinder epicoele is washed one way valve 10 continuation open to the A1 chamber of compensating cylinder feed flow, until collision block 19 pressing travel switches 17, and makes electromagnetic valve 35 commutations.The synchronous process of the automatic harmony of compensating cylinder and working fluid cylinder that Here it is.

Claims

1. feedback information formula oil rig, comprise kinetic pump, reversing valve assembly, overflow valve, electromagnetic valve, wellbore casing, oil well pump and working fluid cylinder, it is characterized in that: be provided with outer instrumentation tubes in the pit shaft, be loaded on oil well pump in the outer instrumentation tubes the piston that moves about be connected with the piston rod of working fluid cylinder, working fluid cylinder top is provided with the interior instrumentation tubes that is communicated with fluid pressure line; Annular chamber between inside and outside instrumentation tubes is communicated with the cavity of resorption of compensating cylinder, and the epicoele of compensating cylinder is connected with fluid pressure line; The oil-out of oil well pump is communicated with and leads to the annular fuel-displaced pipeline between pit shaft, outer instrumentation tubes with oil-out on the outer instrumentation tubes.

2. feedback information formula oil rig as claimed in claim 1 is characterized in that: be provided with packer between pit shaft and outer instrumentation tubes.

3. feedback information formula oil rig as claimed in claim 1 is characterized in that: be provided with power cylinder seat envelope between outer instrumentation tubes and piston rod, between piston rod seals with the power cylinder seat for being slidingly matched.

4. feedback information formula oil rig as claimed in claim 1, it is characterized in that: the working fluid cylinder piston is provided with one way valve.

5. feedback information formula oil rig as claimed in claim 1 is characterized in that: the counterbalance valve that is connected with adjustable pressure on the electromagnetic valve on control compensating cylinder epicoele liquid road.