CN104196516A - Double-barrel type two-stage axial flow downhole degassing device - Google Patents
Double-barrel type two-stage axial flow downhole degassing device Download PDFInfo
- Publication number
- CN104196516A CN104196516A CN201410480040.0A CN201410480040A CN104196516A CN 104196516 A CN104196516 A CN 104196516A CN 201410480040 A CN201410480040 A CN 201410480040A CN 104196516 A CN104196516 A CN 104196516A
- Authority
- CN
- China
- Prior art keywords
- axial flow
- section
- cone
- fluid cylinder
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a double-barrel type two-stage axial flow downhole degassing device which is mounted between an oil pump and a sieve pipe and which is used for gas-liquid phase separation before the oil and gas well output fluid enters the pump for the first time. According to the degassing device, by means of the special double barrel type structure and the two stage axial flow technology, the output fluid gas-liquid phase separation is implemented, and the mechanical recovery system efficiency is improved; the sieve tube is communicated with an inner fluid barrel through a fluid feeding device, and the speed of the fluid being outputted by pumping is increased; an axial flow pipe assembly adopts two stage axial flow gas-liquid separation, axial flow pipes are designed in standardized and modular manners, and the output fluid can be degassed efficiently and thoroughly; the output fluid can be ejected into the axial flow pipes in the high initial velocity through the inner fluid barrel, the double-barrel annular space is formed by the inner fluid barrel and an outer fluid barrel and is used for delivering the fluid in the axial flow pipes after degassing; the degassed fluid is adjusted reversely to form the stabilized flow through a rectifier, is discharged into the outer fluid barrel and is delivered to the oil pump after being accelerated through a fluid director, and the gas is slowed and pressurized through an exhauster before being exhausted into the wellhole.
Description
Technical field
The present invention is applicable to the down-hole degasser of Oil/gas Well and unconventional gas well, particularly relates to a kind of production fluid and enters the device that the front gas and oil of pump, gas and oil water or gas-water separation are used.
Background technology
In the oil pumping system of Oil/gas Well, the height of downhole pump efficiency plays key effect to the efficiency of whole system.During the production operation of Oil/gas Well, inevitably exist gas in the production fluid of down-hole to follow liquid to enter together the phenomenon of pump, the existence of these gases directly causes oil pumping system efficiency on the low side; In addition, for the oil pumping process of high gas-liquid ratio Oil/gas Well, if do not adopt necessary degassed measure, easily cause gas-liquid two-phase production fluid before fully not separated, a large amount of gas enter oil well pump, thereby cause the generation of gas lock phenomenon.For this reason, how reducing the impact of gas in production fluid, improve computer collecting system efficiency, prevent that gas lock phenomenon from occurring simultaneously, is problem demanding prompt solution in the normal production operation of Oil/gas Well and high-efficiency mining.
Because the existence of gas in production fluid is the major influence factors that pumping efficiency of oil pump reduces, for this reason the most directly and effective measures are to adopt down-hole degasser to ensure that production fluid realized gas-liquid two-phase and separate before entering oil well pump, reduce to greatest extent into the gas content in pump sump liquid.At present, Canada C-FER (The Centre for Engineering Research Inc.) coacts with the REDA of equipment manufacturers, Vortoil, advance a kind of spiral separator to carry out the industrialization of down-hole gas-liquid two-phase piece-rate system, this spiral separator technology is the fixed monoblock helical blade that adopts screw thread-like, helical blade makes the stressed rotation of air-flow and realizes separation, has realized gas-liquid separation and recovered water and inject simultaneously the imagination on stratum; But, the service behaviour of this eliminator depends on the flow of pitch, a number, diameter and the air-flow of helical blade, be not suitable for process large volume flow containing liquid air-flow, there is certain difficulty in helical blade processing and manufacturing simultaneously, and the technical difficulty of welding between helical blade and tank body is large and weldquality is difficult to ensure.Domestic taking Daqing Petroleum Institute as the main down-hole gas-liquid separation equipment that designed, and carry out related process research, current after the gas-liquid separation of down-hole are recycled into water filling layer, gas enters mined bed via exhaust plant, but in the stage of also mainly testing in surface separation at present, there is not yet it and carry out practical application aspect the gas-liquid separation of down-hole.
In sum, there are the problems such as the limited and processing and manufacturing of service behaviour is more difficult in external down-hole gas-liquid separation and re-injection technology, and domestic research is also just in the ground experiment stage.For this reason, relying on the basis of existing feasibility technology, adopt in oil well pump flow simulation analysis result in conjunction with Shengli Oil Field Oil/gas Well and the unconventional gas well site test results of Ordos Basin of gas-liquid two-phase, the impact of research gas with various content on the normal operation of oil well pump and pump efficiency, for the optimal design of degasser provides important evidence; Employ new technology simultaneously, new material and processing technology, develop novel two-stage axial flow down-hole degasser, to improving, computer collecting system pumping efficiency and Oil/gas Well are energy-saving and cost-reducing and to promote comprehensive development benefit all significant.
Summary of the invention
In order to overcome defect and the deficiency that under existing well, gas-liquid separation technology exists, the object of the invention is to develop a kind of Novel double-cylinder type two-stage axial flow down-hole degasser that the gas-liquid separation of Oil/gas Well production fluid is used that is applicable to.This down-hole degasser is after computer collecting system is combined under conventional well, realizing first production fluid separates at the gas-liquid two-phase entering before pump, simultaneously according to its double-cylinder type special construction and two-stage axial flow technology, reach and improve computer collecting system efficiency, prevent that gas lock phenomenon from occurring, and ensure the target of Oil/gas Well high-efficiency mining.
The technical solution adopted for the present invention to solve the technical problems is exploitation a kind of double-cylinder type two-stage axial flow down-hole degasser, is mainly made up of liquid inlet device, interior fluid cylinder, axial flow pipe assembly, rectifier, drain pump, soaker, outer fluid cylinder and several parts of air deflector.Down-hole degasser is the top that directly hangs on fluid producing layer position in well by tubing string and auxiliary downhole tool with oil well pump and sand control screen, its degassed mechanism is, Oil/gas Well production fluid after screen casing desanding flows into down-hole degasser by liquid inlet device, and interior fluid cylinder is full of have the gas-liquid two-phase liquid of bottom hole flowing pressure, production fluid tangentially enters and in axial flow pipe, carries out two-stage axial flow gas-liquid separation processing through axial flow pipe assembly top inlet, first production fluid forms two bursts of coaxial flow and with the rotating flow of rotation direction in upper straight length, flow to after upper cone section, the angular momentum increasing makes the friction factor between production fluid and cone wall less, production fluid High Rotation Speed, gas migration to axial flow pipe central authorities form the gas column oppositely rising, and production fluid after preliminary gas-liquid separation progressively gets rid of to tube wall, realize thus the gas-liquid separation of first order axial flow, after this production fluid continues to flow into lower straighttube section, after staying for some time in axial flow field, flow into lower cone section, pipeline section shrinks rapidly, the production fluid that obtains large angular acceleration constantly accelerates rotation in the process of axial flow, in production fluid, remaining gas migration is to axial flow pipe central authorities formation gas column and after converging with the gas column of first order axial flow, after soaker boosts, discharge degasser and enter down-hole oil tube and the annular space of sleeve pipe, and liquid is thrown toward tube wall and downward axial flow to rectifier is oppositely integrated into after steady flow, the annular space of fluid cylinder and outer fluid cylinder in drain pump flows into, finally enter oil well pump by air deflector, and then be lifted to ground, realize since then second level axial flow gas-liquid separation.
Liquid inlet device is positioned at the foot of down-hole degasser, make screen casing keep UNICOM and there is identical bottom hole flowing pressure with interior fluid cylinder, the cross section of fluid channel constantly dwindling according to it, realizes production fluid speed-raising simultaneously, avoids the entrained a small amount of fine sand of production fluid to deposit in the chamber of interior fluid cylinder.Liquid inlet device comprises feed liquor cover, feed liquor body, dividing plate and brace rod, and each parts material is all selected two-way stainless steel.Feed liquor cover profile presents " horn mouth " shape, is combined successively from top to bottom by housing, cone and backing plate, and backing plate adopts annular plate-like structure, between its outer ring surface and partition groove, adopts matched in clearance, and backing plate surrounding is processed with the screwed hole being evenly arranged; Cone adopts tubular inverted cone structure, and production fluid is flowed through after conic section shrinks and entered housing, and the large end disc of cone diameter equals the diameter of backing plate inner ring surface, and its small end disc diameter equals housing external diameter; The external surface of housing adopts the structure of inverted cone and cylinder combination, its inner surface adopts the streamline structure of variable cross-section, the upper and lower of its axial section outline line is the straightway parallel with liquid inlet device axis, middle and upper part is the arc section of up concave type, and middle and lower part is the arc section of upwards-raised, tangent between straightway and arc section, the normal of arc section junction overlaps simultaneously, ensures the stability of mobile production fluid in feed liquor cover.Feed liquor body adopts the shuttle body structure of variable cross-section, and its top is cone, avoids production fluid to produce eddy current in liquid inlet device exit; The outline line that enters liquid profile matches with feed liquor cover section, from top to bottom be followed successively by the arc section of straightway, upwards-raised and up concave type, ensure that the runner in liquid inlet device is the diminishing variable cross-section loop configuration of area, the flow velocity of axial flow production fluid in runner is constantly promoted.Dividing plate adopts annular plate-like structure, realizes fixing between liquid inlet device and outer fluid cylinder by interference fit, and dividing plate inner ring surface upper design has rectangle loopful groove, realizes connecting between dividing plate and feed liquor cover below groove after uniform screw hole attachment screw securing member.Brace rod the adopts cross section list structure that is rhombus, quantity is four and is evenly arranged in feed liquor cover top and realizes the location between feed liquor body and feed liquor cover.
Interior fluid cylinder is used for holding and enters in the degasser of down-hole the still production fluid in gas-liquid two-phase, maintains the interior pressure that size is bottom pressure simultaneously, to ensure that production fluid injects and forms high-speed rotary turn of tidal stream in axial flow pipe with higher initial velocity.Interior fluid cylinder comprises Guan Gai, interior fluid cylinder body and fagging, and each parts material is all selected two-way stainless steel.The structure that interior fluid cylinder body adopts cylindrical tube and inverted cone to combine, the blind lid central authorities of its upper end are processed with internal thread hole, and surrounding is evenly arranged three tapped through holes; The cylindrical tube external diameter at middle part equals the diameter of feed liquor hood pad plate outer ring surface; The inverted cone small end disc diameter of bottom equals the external diameter of feed liquor over body case, and and the cone of feed liquor cover between realize the fixing of interior fluid cylinder by the mode of circumferential weld, the middle part of inverted cone is processed with three circular eyelets corresponding with axial flow pipe position simultaneously.Pipe lid adopts circular cylinder, and the central authorities of its top end cap are processed with circular hole, and external screw thread on the external anchor ring of lower post is realized the location of axial flow pipe in interior fluid cylinder after connecting with the blind lid of interior fluid cylinder body.Fagging adopts cylindricality plectane, and its central inner ring surface employing tapering is the rounding conical surface of 20 °, matches and realizes location, to ensure the levelness of fagging and the verticality of axial flow pipe and rectifier with the housing of feed liquor cover; Fagging surrounding is evenly arranged three turbination eyelets corresponding with rectifier position.
Axial flow pipe assembly is used for implementing the gas-liquid separation of two-stage axial flow, ensures that production fluid obtains efficiently and thoroughly degassed processing.Axial flow pipe vertical being evenly arranged along the circumferential direction in interior fluid cylinder, and the axis of axial flow pipe assembly and the axis of degasser overlap.For ensure that production fluid obtains efficient degassing processing and considers spatial limitation in output liquid measure and pit shaft simultaneously, axial flow pipe assembly is finally preferably the mode of three axial flow pipes parallel connection.Axial flow pipe top keeps connecting by overflow gas section and soaker, between the pipe lid of the gas section of overflowing and interior fluid cylinder, adopts matched in clearance; Axial flow pipe bottom keeps UNICOM by lower cone section, rectifier and drain pump and outer fluid cylinder simultaneously, and lower cone section is realized fixing between axial flow pipe and rectifier by circumferential weld.
Three axial flow pipes all adopt identical structure and size, to realize its standardization and chunkization design, the special tectonic that axial flow pipe adopts cone and cylinder to combine, entirety presents upper coarse and lower fine back taper, comprise overflow gas section, upper and lower straight length and upper lower cone section, each parts material is all selected two-way stainless steel, simultaneously inner bushing ring epoxy resins.
Production fluid is implemented the gas-liquid separation of first order axial flow in upper straight length and upper cone section, the structure that the outer ring surface of upper straight length adopts cylindricality and turbination to combine, and its inner ring surface is cylindrical, the top of upper straight length is processed with the inlet being along the circumferential direction arranged symmetrically with, the outlet of inlet, along arranged clockwise, ensures that production fluid produces the rotating flow of identical rotation direction in axial flow pipe.Each inlet is the cylindricality duct with certain diameter, and the circumference of the outer end line of duct horizontal profile and upper straight length position is tangent, ensures that production fluid tangentially enters in axial flow pipe and forms two strands of coaxial mobile rotating flows.The large end disc diameter of upper cone section equals the internal diameter of straight length, and small end disc diameter equals the internal diameter of lower straighttube section, and rotating flow is entered after upper cone section by upper straight length, and angular momentum increases, and itself and the friction factor of boring between wall diminish, High Rotation Speed thus.
Production fluid is implemented second level axial flow gas-liquid separation in lower straighttube section and lower cone section, lower straighttube section realizes the connection between two-stage axial flow gas-liquid separation pipeline section, and the upper straight length of axial flow pipe and lower straighttube section spacing vertically reduce successively, ensure that rotating flow stops the shorter time in lower straighttube section.The diameter of the large end disc of lower cone section equals the diameter of upper cone section small end disc, upper cone section and the lower cone section spacing vertically of axial flow pipe reduce successively simultaneously, and the tapering of the conical surface increases successively, optimal design is 10 ° and 20 ° respectively, ensure rotating flow enter lower cone section after pipeline section shrink rapidly, it is large that angular acceleration becomes, and rotary speed constantly promotes, and realizes the separating effect of residue gas-liquid the best.
The gas section of overflowing is positioned at the upper end of axial flow pipe, is used for ensureing that the gas after the gas-liquid separation of two-stage axial flow shrinks and overflow axial flow pipe smoothly.The overflow top of gas section adopts flange and elbow successively, and realizes connecting between axial flow pipe assembly and soaker by bolt fastener; On the outer ring surface of its underpart, be processed with the loopful rectangular recess of equidistant layered arrangement, every layer of position placement ○-shaped seal ring that groove coordinates with interior fluid cylinder pipe lid, to realize the sealing between interior fluid cylinder and axial flow pipe; The gas section of simultaneously overflowing realizes the location between itself and interior fluid cylinder by the upper surface of upper straight length.The gas section inner ring surface that overflows adopts the structure that combines with bending cylinder of taper seat, and while ensureing gas overflowing, volume constantly reduces to flow pressure simultaneously and promotes gradually, so that discharge smoothly.The axis of excessive gas section entrance axis and axial flow pipe coincides, and outlet axis is at 45 ° with horizontal plane, the duct loss bringing to reduce air-flow break-in.
Rectifier upper joint-shaft stream pipe and under connect drain pump, the downward axial flow of liquid after production fluid is degassed, to rectifier, is oppositely integrated and becomes steady flow, stream is pressed and recovered and promote.The uniform position of three rectifiers is corresponding with axial flow pipe, and each rectifier comprises flow regulating barrels, straightener(stator) blade, rectification bar and rectification wheel, and except straightener(stator) blade, miscellaneous part all adopts two-way stainless steel.Flow regulating barrels adopts cylindrical structure, and its outer ring surface bottom employing tapering is the turbination structure of 20 °, match and realize location, and its inner ring surface diameter equals the diameter of axial flow pipe lower cone section small end disc with the eyelet of interior fluid cylinder fagging.Rectification bar and rectifier are coaxially arranged, the structure that adopts cone and the body of rod to combine, its top cone is used for liquid to be guided on straightener(stator) blade smoothly, and its underpart cone is used for that the liquid after oppositely integrating is caused to rectification smoothly and takes turns and avoid liquid to leave local eddy generation after guide vane.Rectification wheel is used for liquid to become steady flow, for keeping the circulation of liquid, its wheel shaft adopts thin-wall circular tube, and eight wheel sheets are vertical evenly distributed along wheel shaft outer ring surface, the cutting-edge structure that each employing cross section, top of taking turns sheet is isosceles triangle, the frictional resistance while incision to reduce liquid.
Straightener(stator) blade is used for the liquid after degassed oppositely to integrate, its material selection 60Si2Mn, and modifier treatment Brinell hardness is greater than 230.Each rectifier comprises two straightener(stator) blades along the circumferential direction evenly distributed, and is fixed on rectification bar by welding.The tooth trace of straightener(stator) blade is the helix launching along rectification bar outer ring surface, and the height of helix equals the height of rectification club shaft, and pitch increases gradually.Straightener(stator) blade is isosceles trapezoid at the normal plane end face perpendicular to tooth trace, and in wide outer narrow, to ensure straightener(stator) blade Rigidity and strength, keep liquid film continuous and stable on blade simultaneously.The normal plane end face height of top 1/2nd pitch remains unchanged along tooth trace, and the diameter on the face of cylinder, normal plane end face lateral surface place equals the diameter of flow regulating barrels inner ring surface, and and flow regulating barrels between adopt interference fit and realize the fixing of straightener(stator) blade and rectification bar; And the normal plane end face height of bottom 1/4th pitch constantly reduces along tooth trace, the contact area of liquid on straightener(stator) blade dwindled gradually for this reason, progressively gos up and the final straightener(stator) blade that steadily flows out to ensure that liquid stream in the process of oppositely integrating is pressed.
The liquid that drain pump is used for after production fluid is degassed enters outer fluid cylinder smoothly, and it comprises discharging tube and discharge opeing wheel, and material all adopts two-way stainless steel.Discharging tube entrance adopts elbow, realizes liquid change to 45 ° of directions of drain pump by rectifier; After this liquid flows to supercharging section, and the area in supercharging section cross section increases gradually, makes the kinetic energy of liquid change enthalpy increasing into, and the stream of liquid is pressed and is improved; Discharging tube outer ring surface adopts the structure of the conical surface and cylinder combination, and its central column face connects by matched in clearance with the circular eyelet of interior fluid cylinder body bottom.Discharge opeing wheel is positioned at the outlet section of discharging tube, and rectification wheel that it is constructed in similar rectifier ensures that the liquid after degassed is finally injected outer fluid cylinder stably.
Outer fluid cylinder is positioned at the outermost layer of down-hole degasser, forms the bitubular annular space of liquid flow together with interior fluid cylinder, is used for the liquid after degassed axial flow pipe to be upwards delivered to air deflector.Outer fluid cylinder material adopts 45 steel, its external surface surfacing processing, and the processing of inner wall surface chemical plating, and thickness of coating is greater than 0.08 millimeter, spray-welding coating and coating and parent metal strong bonded.The upper and lower two ends of outer fluid cylinder are all processed with external screw thread, and upper end connects with oil well pump by box cupling, and lower end connects with screen casing by box cupling.Outer fluid cylinder top is processed with three along the circumferential direction evenly distributed circular eyelets, and eyelet axis and horizontal plane are at 45 °.
Gas that soaker is used for production fluid to deviate from slows down after boosting and arranges into the annular space of down-hole oil tube and sleeve pipe, avoids bottom hole pressure surge in operation and the fluid that causes in pit shaft when step-down is played a reversed role to degasser by soaker simultaneously.The uniform position of three soakers is corresponding with axial flow pipe, and each soaker comprises pressure-control valve and diffuser pipe, and soaker axis and axial flow Guan Yiqi section outlet axis coincide and be at 45 ° with horizontal plane.The structure that diffuser pipe adopts flange, cone and cylinder to combine successively, the tapering of its inner ring surface conical surface is less than the tapering of outer ring surface, and shrink gradually in the cross section of cone place runner, and upwards mobile gas, after this is compressed, slows down and boost in pressure.Diffuser pipe exit is connected with pressure-control valve, when ensureing to enter pit shaft smoothly after gas boosts, avoids the fluid in pit shaft in bottom hole pressure surge operating mode to reflux.
Air deflector is positioned at the topmost of down-hole degasser, and the liquid in outer fluid cylinder is sent into oil well pump after speed-raising, while avoiding liquid to carry sand grains operating mode, deposits outside in fluid cylinder.Air deflector comprises kuppe and deflection cone, and the axis of kuppe and deflection cone overlaps with the axis of degasser, and upper surface is all mutually concordant with the upper surface of outer fluid cylinder, to realize the location of air deflector.The material of drain cover is selected 35CrMo, and cover surface adopts oxidation processes and modifier treatment Brinell hardness to be not less than 220; And the material of deflection cone is selected 60Si2Mn, modifier treatment Brinell hardness is greater than 230.Drain cover adopts variable cross-section rotary structure, and its lower end is higher than the position at soaker pressure-control valve outlet place, and outer ring surface diameter equals outer fluid cylinder internal diameter, and and outer fluid cylinder between adopt interference fit to be fixed; Drain cover inwall adopts streamlined, the top of its axial section outline line is the arc section of upwards-raised, the tangent line at place, arc section exit parallels with air deflector axis, and its underpart is the arc section of up concave type, and the tangent line at place, arc section entrance parallels with air deflector axis.Deflection cone adopts thick variable cross-section pyramidal structure between two ends details, on the cylinder of its foot, is processed with external screw thread, after connecing, realizes the fixing of deflection cone with interior fluid cylinder sports association; The passage that deflection cone and kuppe are used in conjunction with rear guarantee liquid flow is the diminishing annular configuration of cross sectional area, constantly increases to realize flow rate of liquid.Deflection cone axial section outer contour matches with the outline line of kuppe section, and its top is the arc section of up concave type, and the tangent line at place, arc section exit parallels with air deflector axis, ensures that liquid evenly flows out vertically; Middle part is the arc section of upwards-raised, and the normal of junction, arc section two ends all overlaps, and ensures the continuity of liquid in air deflector runner; Bottom is the arc section of up concave type, and the tangent line at place, arc section entrance parallels with air deflector axis, ensures that the liquid in outer fluid cylinder steadily flows into air deflector vertically.
The technique effect that the present invention can reach is, this down-hole degasser, according to its double-cylinder type special construction and two-stage axial flow technology, is realized production fluid and is separated at the gas-liquid two-phase entering before pump, thereby improve computer collecting system efficiency, prevent that gas lock phenomenon from occurring, and ensures Oil/gas Well high-efficiency mining; Liquid inlet device makes screen casing and interior fluid cylinder keep UNICOM, and the cross section of fluid channel constantly dwindling according to it, realizes production fluid speed-raising, avoids fine sand to deposit; Interior fluid cylinder is used for maintaining the interior pressure that size is bottom pressure, ensures that production fluid injects and in axial flow pipe, forms high-speed rotary turn of tidal stream with higher initial velocity; Outer fluid cylinder forms the bitubular annular space of liquid flow together with interior fluid cylinder, the liquid after being used for carrying axial flow pipe degassed; Axial flow pipe assembly is realized the two-stage axial flow gas-liquid separation of down-hole production fluid, ensures that production fluid obtains efficiently and thoroughly degassed processing; Straightener(stator) blade is set on rectifier, and the liquid after production fluid is degassed is oppositely integrated and is become steady flow, and stream is pressed and recovered and promote; Air deflector is sent into oil well pump by the liquid in outer fluid cylinder after speed-raising, avoids sand grains to deposit; Drain pump is used for the liquid after degassed to enter smoothly outer fluid cylinder, and the gas that soaker is used for production fluid to deviate from deceleration is arranged into pit shaft after boosting, and avoids the fluid in pit shaft to produce and reflux through soaker simultaneously.
Brief description of the drawings
Fig. 1 is according to the typical structure sketch of double-cylinder type two-stage axial flow down-hole degasser proposed by the invention.
Fig. 2 is A-A sectional view of Fig. 1.
Fig. 3 is the structure diagram of liquid inlet device in the degasser of double-cylinder type two-stage axial flow down-hole.
Fig. 4 is the structure diagram of interior fluid cylinder in the degasser of double-cylinder type two-stage axial flow down-hole.
Fig. 5 is the structure diagram of double-cylinder type two-stage axial flow down-hole degasser Axial-Flow pipe.
Fig. 6 is the structure diagram of rectifier in the degasser of double-cylinder type two-stage axial flow down-hole.
Fig. 7 is the structure diagram of drain pump in the degasser of double-cylinder type two-stage axial flow down-hole.
Fig. 8 is the structure diagram of soaker in the degasser of double-cylinder type two-stage axial flow down-hole.
Fig. 9 is the structure diagram of air deflector in the degasser of double-cylinder type two-stage axial flow down-hole.
Figure 10 is the gas-liquid separation general flow chart of double-cylinder type two-stage axial flow down-hole degasser.
1-air deflector in figure, 2-soaker, the outer fluid cylinder of 3-, fluid cylinder in 4-, 5-axial flow pipe assembly, 6-rectifier, 7-drain pump, 8-liquid inlet device, 9-brace rod, 10-feed liquor body, 11-feed liquor cover, 12-dividing plate, 13-manages lid, fluid cylinder body in 14-, 15-fagging, the 16-gas section of overflowing, the upper straight length of 17-, 18-upper cone section, 19-lower straighttube section, 20-lower cone section, 21-flow regulating barrels, 22-straightener(stator) blade, 23-rectification bar, 24-rectification wheel, 25-discharge opeing wheel, 26-discharging tube, 27-pressure-control valve, 28-diffuser pipe, 29-kuppe, 30-deflection cone.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further illustrated, but the present invention is not limited to following examples.
In Fig. 1 and Fig. 2, double-cylinder type two-stage axial flow down-hole degasser is made up of air deflector 1, soaker 2, outer fluid cylinder 3, interior fluid cylinder 4, axial flow pipe assembly 5, rectifier 6, drain pump 7 and liquid inlet device 8 successively, when operation, this down-hole degasser connects sand control screen under by connecing oil well pump on box cupling, and directly go into the well along casing string with tubing string and auxiliary downhole tool, finally hang on the top of fluid producing layer position in well.When assembling, first liquid inlet device 8 is fixed on to outer fluid cylinder 3 bottoms, then respectively the axial flow pipe of each axial flow pipe assembly 5, rectifier 6 and drain pump 7 are welded into three monomers, and insertion liquid inlet device 8 after connecting with interior fluid cylinder 4 successively, then each soaker 2 is fixed on to outer fluid cylinder 3 tops, and connect with each axial flow pipe of axial flow pipe assembly 5 by securing member, finally the deflection cone of air deflector 1 is connected to interior fluid cylinder 4 tops, and the kuppe of air deflector 1 is embedded to outer fluid cylinder 3 tops, after down-hole degasser has assembled, the processing of finally spraying paint of outer fluid cylinder 3.
In Fig. 1 and Fig. 2, when the debugging of double-cylinder type two-stage axial flow down-hole degasser, first whole device is carried out to hydraulic test and air tight test; Then, check that successively whether each weld seam is qualified, whether each joint connects; Finally, check that whether each connection threaded fastener is loosening, have non-corroding.While maintenance during workover treatment, need overhaul respectively each parts, first in checking successively, whether axial flow pipe inlet, drain pump 7 and the outer fluid cylinder 3 of fluid cylinder 4, axial flow pipe assembly 5 have foreign matter to pile up, whether the straightener(stator) blade surface that then checks rectifier 6 has corrosion, change if desired, then check the dirt on the each axial flow pipe of axial flow pipe assembly 5, air deflector 1 and liquid inlet device 8, can clean with alkali cleaning or cleaning fluid if desired.
In Fig. 3, liquid inlet device 8 is fixed on outer fluid cylinder 3 bottoms by dividing plate 12, and the housing of feed liquor cover 11 coordinates with the inner ring surface of interior fluid cylinder 4 fagging central authorities and makes screen casing and interior fluid cylinder 4 keep each other UNICOM.Feed liquor body 10 is connected to the top of feed liquor cover 11 by brace rod 9, feed liquor body 10 coordinates feed liquor cover 11 that the cross section of fluid channel in liquid inlet device 8 is dwindled gradually, and the flow velocity of realizing thus Oil/gas Well production fluid constantly promotes.
In Fig. 4, interior fluid cylinder 4 is connected on liquid inlet device 8 by the acting in conjunction of fagging 15 and interior fluid cylinder body 14 bottom inverted cones, simultaneously, fluid cylinder 4 is held and is processed and the Oil/gas Well production fluid of not yet degassed processing through filter sand by interior fluid cylinder body 14, and cover 13 by pipe and carry out not degassed production fluid in the liquid of degassed processing in the outer fluid cylinder 3 of packing and interior fluid cylinder 4, the production fluid in final guarantee in fluid cylinder 4 maintains the interior pressure of bottom pressure all the time.
In Fig. 5, axial flow pipe assembly 5 is positioned at fluid cylinder 4, complete the gas-liquid separation of production fluid two-stage axial flow according to three vertical axial flow pipes that are evenly arranged, wherein production fluid is first at upper straight length 17 and the interior High Rotation Speed of upper cone section 18, complete the gas-liquid separation of first order axial flow, then again constantly promote in lower straighttube section 19 and the interior rotary speed of lower cone section 20, complete second level axial flow gas-liquid separation, gas after the gas-liquid separation of two-stage axial flow shrinks and overflows axial flow pipe smoothly by the excessive gas section 16 of axial flow pipe upper end, and liquid after gas-liquid separation continues downward axial flow to rectifier 6 through lower cone section 20 outlets, make thus production fluid obtain efficiently and thoroughly degassed processing.
In Fig. 6, rectifier 6 is integrated by welding and axial flow pipe and drain pump 7, make axial flow pipe and outer fluid cylinder 3 keep UNICOM, in the eyelet of flow regulating barrels 21 bottoms embedding faggings 15, realize the location of axial flow pipe in interior fluid cylinder 4, liquid after degassed is guided on straightener(stator) blade 22 smoothly through the top of rectification bar 23 cone, causes rectification wheel 24 form steady flow after oppositely integrating by the bottom cone of rectification bar 23.
In Fig. 7, in circular hole in drain pump 7 embeds in the middle part of fluid cylinder 4 inverted cones, the steady flow of rectification wheel 24 outlets continues downward axial flow to discharging tube 26, after stream is pressed and promoted, then take turns 25 by discharge opeing the liquid after degassed axial flow pipe is injected in the bitubular annular space that outer fluid cylinder 3 and interior fluid cylinder 4 form reposefully.
In Fig. 8, the top of soaker 2 embeds the circular port intraocular on outer fluid cylinder 3 tops, and its underpart is integrated by Bolt Connection and axial flow pipe and keep perforation, gas after production fluid is degassed enters the diffuser pipe 28 of soaker 2 through the excessive gas section 16 of axial flow pipe, gas is compressed and slow down and boost, then arranges into the annular space of down-hole oil tube and sleeve pipe by pressure-control valve 27.The pressure slowing down after boosting at gas is lower than in the annular space of oil pipe and sleeve pipe, stream is pressed, and pressure-control valve 27 cuts out automatically, until gas pressure again higher than annular space in stream while pressing, pressure-control valve 27 is opened voluntarily.
In Fig. 9, the kuppe 29 of air deflector 1 embeds the top of outer fluid cylinder 3, and deflection cone 30 coordinates with kuppe 29 be connected to the top of interior fluid cylinder 4 by screw thread after, cross section, circular passage in air deflector 1 is constantly dwindled, and the liquid in the outer fluid cylinder 3 of realization enters after the rear flow velocity of air deflector 1 is promoted and enters oil well pump thus.
In Figure 10, the idiographic flow of Oil/gas Well production fluid gas-liquid separation is, production fluid flows into down-hole degasser after screen casing desanding, first by liquid inlet device 8, its flow velocity is promoted, then enter interior fluid cylinder 4 through feed liquor body 10 and feed liquor cover 11, the equalization of pressure of production fluid in screen casing, liquid inlet device 8 and interior fluid cylinder 4 is in bottom hole flowing pressure, then production fluid is tangentially injected upper straight length 17 through the inlet on the each axial flow pipe of axial flow pipe assembly 5 top, and form two strands coaxial flow and rotating flow with rotation direction after accelerate axial flow to upper cone section 18, angular momentum at this production fluid increases and then High Rotation Speed, high speed axial flow in upper straight length 17 and upper cone section 18 makes gas migration to the axial flow pipe central authorities in production fluid form the gas column oppositely rising, and the production fluid after preliminary gas-liquid separation progressively gets rid of to tube wall, after this production fluid continues downward axial flow to after staying for some time in the axial flow field of lower straighttube section 19, flow into lower cone section 20, obtain larger angular acceleration and then under fast state, constantly accelerate rotation at this, further acceleration axial flow in lower straighttube section 19 and lower cone section 20 is migrated again to axial flow pipe central authorities formation gas column remaining gas in production fluid, and oppositely rise and converge and form same gas column with the gas column of first order axial flow, enter soaker 2 by excessive gas section 16, after finally boosting by diffuser pipe 28, deliver to the annular space of down-hole oil tube and sleeve pipe through pressure-control valve 27, now the pressure of soaker 2 interior gases is pressed higher than the stream in oil pipe and sleeve pipe annular space, and liquid after degassed be thrown toward tube wall and in lower cone section 20, collect after flow to rectifier 6 to lower shaft, after oppositely integrating by straightener(stator) blade 22, flow to rectification wheel 24 and form steady flow, then after promoting stream pressure, the discharging tube 26 of drain pump 7 steadily injected in outer fluid cylinder 3 by discharge opeing wheel 25, the outer fluid cylinder 3 of finally flowing through is delivered to air deflector 1 with the bitubular annular space of interior fluid cylinder 4, and by entering oil well pump after 30 speed-raisings of kuppe 29 and deflection cone, now liquid exports at drain pump 7, the pressure of bitubular annular space, air deflector 1 and oil well pump entrance all equates.
Claims (10)
1. a double-cylinder type two-stage axial flow down-hole degasser, after computer collecting system is combined under conventional well, according to its double-cylinder type special construction and two-stage axial flow technology, realizes production fluid and separates at the gas-liquid two-phase entering before pump, it is characterized in that:
One liquid inlet device; The feed liquor cover profile of described liquid inlet device presents " horn mouth " shape, and production fluid is flowed through after conic section shrinks and entered housing, and the external surface of housing adopts the structure of inverted cone and cylinder combination, and its inner surface adopts the streamline structure of variable cross-section; Feed liquor body adopts the shuttle body structure of variable cross-section, and the outline line of its section matches with feed liquor cover section, and liquid inlet device inner flow passage is the diminishing variable cross-section loop configuration of area, and dividing plate is realized fixing between liquid inlet device and outer fluid cylinder by interference fit;
One interior fluid cylinder; The interior fluid cylinder body of described interior fluid cylinder adopts the structure of cylindrical tube and inverted cone combination, and fagging central authorities inner ring surface employing tapering is the rounding conical surface of 20 °, matches and realizes location with the housing of feed liquor cover;
One axial flow pipe assembly; The axial flow pipe of described axial flow pipe assembly vertical being evenly arranged along the circumferential direction in interior fluid cylinder, three axial flow pipes all adopt identical structure and size, the special tectonic that axial flow pipe adopts cone and cylinder to combine, entirety presents upper coarse and lower fine back taper; Production fluid is implemented the gas-liquid separation of first order axial flow in upper straight length and upper cone section, and in lower straighttube section and lower cone section, implements second level axial flow gas-liquid separation; The upper straight length of axial flow pipe and lower straighttube section spacing vertically reduce successively, and upper cone section and lower cone section spacing vertically reduce successively, and the tapering of the conical surface increases successively; On excessive gas section outer ring surface, be processed with the loopful rectangular recess of equidistant layered arrangement, and the structure that its inner ring surface adopts taper seat to combine with bending cylinder;
One rectifier; The uniform position of described rectifier is corresponding with axial flow pipe, flow regulating barrels outer ring surface bottom employing tapering is the turbination structure of 20 °, rectification bar and rectifier are coaxially arranged, the structure that adopts cone and the body of rod to combine, and eight wheel sheets of rectification wheel are vertical evenly distributed along wheel shaft outer ring surface; Each rectifier comprises two straightener(stator) blades along the circumferential direction evenly distributed, the pitch of straightener(stator) blade increases gradually, straightener(stator) blade is isosceles trapezoid at the normal plane end face perpendicular to tooth trace, and in wide outer narrow, the normal plane end face height of top 1/2nd pitch remains unchanged along tooth trace, and the normal plane end face height of bottom 1/4th pitch constantly reduces along tooth trace, the contact area of liquid on straightener(stator) blade dwindled gradually;
One drain pump; The area in the discharging tube supercharging section cross section of described drain pump increases gradually, makes the kinetic energy of liquid change enthalpy increasing into, and stream is pressed and is improved, the rectification wheel in the similar rectifier of discharge opeing wheel construction;
One outer fluid cylinder; Described outer fluid cylinder forms the bitubular annular space of liquid flow together with interior fluid cylinder;
One soaker; Described soaker axis and axial flow Guan Yiqi section outlet axis coincide, and the tapering of the diffuser pipe inner ring surface conical surface is less than the tapering of outer ring surface, and shrink gradually in the cross section of cone place runner, and diffuser pipe exit is connected with pressure-control valve;
One air deflector; The kuppe of described air deflector and the axis of deflection cone overlap with the axis of degasser, and upper surface is all mutually concordant with the upper surface of outer fluid cylinder; Drain cover adopts variable cross-section rotary structure, and its lower end is higher than the position at soaker pressure-control valve outlet place, and inwall adopts streamlined; Deflection cone adopts thick variable cross-section pyramidal structure between the detail of two ends, the passage that deflection cone and kuppe are used in conjunction with rear guarantee liquid flow is the diminishing annular configuration of cross sectional area, and deflection cone axial section outer contour matches with the outline line of kuppe section.
2. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, it is characterized in that: between the backing plate outer ring surface of described feed liquor cover and partition groove, adopt matched in clearance, the large end disc of cone diameter equals the diameter of backing plate inner ring surface, and its small end disc diameter equals housing external diameter;
The upper and lower of the axial section outline line of the shell inner surface of described feed liquor cover is the straightway parallel with liquid inlet device axis, and middle and upper part is the arc section of up concave type, and middle and lower part is the arc section of upwards-raised.
3. double-cylinder type two-stage axial flow according to claim 1 and 2 down-hole degasser, is characterized in that: the liquid upper that enters of described liquid inlet device is cone, and the outline line of its section is from top to bottom followed successively by the arc section of straightway, upwards-raised and up concave type;
The dividing plate of described liquid inlet device adopts annular plate-like structure, and its inner ring surface upper design has rectangle loopful groove;
The brace rod of described liquid inlet device adopts the list structure that cross section is rhombus, and quantity is four and is evenly arranged in feed liquor cover top.
4. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, it is characterized in that: the cylindrical tube external diameter at described interior fluid cylinder body middle part equals the diameter of feed liquor hood pad plate outer ring surface, and the inverted cone small end disc diameter of bottom equals the external diameter of feed liquor over body case, the middle part of inverted cone is processed with three circular eyelets corresponding with axial flow pipe position simultaneously;
External screw thread on the external anchor ring of pipe lid lower post of described interior fluid cylinder is realized the location of axial flow pipe in interior fluid cylinder after connecting with the blind lid of interior fluid cylinder body;
The fagging surrounding of described interior fluid cylinder is evenly arranged three turbination eyelets corresponding with rectifier position;
Described outer fluid cylinder upper end connects with oil well pump by box cupling, and lower end connects with screen casing by box cupling; Outer fluid cylinder top is processed with three along the circumferential direction evenly distributed circular eyelets, and eyelet axis and horizontal plane are at 45 °.
5. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, it is characterized in that: the axis of described axial flow pipe assembly overlaps with the axis of degasser, axial flow pipe top keeps connecting by overflow gas section and soaker, between the pipe lid of the gas section of overflowing and interior fluid cylinder, adopt matched in clearance, axial flow pipe bottom keeps UNICOM by lower cone section, rectifier and drain pump and outer fluid cylinder simultaneously.
6. double-cylinder type two-stage axial flow down-hole degasser according to claim 1 or 5, it is characterized in that: on described axial flow pipe, the top of straight length is processed with the inlet being along the circumferential direction arranged symmetrically with, the outlet of inlet is along arranged clockwise, and the outer end line of each inlet duct horizontal profile and the circumference of upper straight length position are tangent;
The large end disc diameter of described axial flow pipe upper cone section equals the internal diameter of straight length, and small end disc diameter equals the internal diameter of lower straighttube section;
Described axial flow pipe lower straighttube section realizes the connection between two-stage axial flow gas-liquid separation pipeline section, and the diameter of the large end disc of lower cone section equals the diameter of upper cone section small end disc;
Described axial flow Guan Yiqi section realizes the location between itself and interior fluid cylinder by the upper surface of upper straight length, and the gas section entrance axis that overflows coincides with the axis of axial flow pipe, exports axis at 45 ° with horizontal plane.
7. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, it is characterized in that: the flow regulating barrels outer ring surface of described rectifier matches and realizes location with the eyelet of interior fluid cylinder fagging, and its inner ring surface diameter equals the diameter of axial flow pipe lower cone section small end disc;
The rectification bar top cone of described rectifier is used for liquid to be guided on straightener(stator) blade smoothly, and its underpart cone is used for the liquid after oppositely integrating to cause smoothly rectification wheel;
The rectification wheel wheel shaft of described rectifier adopts thin-wall circular tube, the cutting-edge structure that each employing cross section, top of taking turns sheet is isosceles triangle.
8. according to the double-cylinder type two-stage axial flow down-hole degasser described in claim 1 or 7, it is characterized in that: the tooth trace of described straightener(stator) blade is the helix launching along rectification bar outer ring surface, and the height of helix equals the height of rectification club shaft;
The diameter on the face of cylinder, normal plane end face lateral surface place of described straightener(stator) blade top 1/2nd pitch equals the diameter of flow regulating barrels inner ring surface, and and flow regulating barrels between adopt interference fit and realize the fixing of straightener(stator) blade and rectification bar.
9. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, is characterized in that: the discharging tube entrance of described drain pump adopts elbow, realizes liquid change to 45 ° of directions of drain pump by rectifier; Discharging tube outer ring surface adopts the structure of the conical surface and cylinder combination, and its central column face connects by matched in clearance with the circular eyelet of interior fluid cylinder body bottom;
The uniform position of described three soakers is corresponding with axial flow pipe, the structure that diffuser pipe adopts flange, cone and cylinder to combine successively.
10. double-cylinder type two-stage axial flow according to claim 1 down-hole degasser, is characterized in that: the drain cover outer ring surface diameter of described air deflector equals outer fluid cylinder internal diameter, and and outer fluid cylinder between adopt interference fit to be fixed;
The top of the drain cover axial section outline line of described air deflector is the arc section of upwards-raised, the tangent line at place, arc section exit parallels with air deflector axis, and its underpart is the arc section of up concave type, the tangent line at place, arc section entrance parallels with air deflector axis;
The top of the deflection cone axial section outer contour of described air deflector is the arc section of up concave type, the tangent line at place, arc section exit parallels with air deflector axis, middle part is the arc section of upwards-raised, the normal of junction, arc section two ends all overlaps, bottom is the arc section of up concave type, and the tangent line at place, arc section entrance parallels with air deflector axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480040.0A CN104196516B (en) | 2014-09-17 | 2014-09-17 | Double-cylinder type two-stage axial flow down-hole degasser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480040.0A CN104196516B (en) | 2014-09-17 | 2014-09-17 | Double-cylinder type two-stage axial flow down-hole degasser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104196516A true CN104196516A (en) | 2014-12-10 |
| CN104196516B CN104196516B (en) | 2016-09-14 |
Family
ID=52081864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410480040.0A Active CN104196516B (en) | 2014-09-17 | 2014-09-17 | Double-cylinder type two-stage axial flow down-hole degasser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104196516B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401582A (en) * | 2016-11-30 | 2017-02-15 | 吉林大学 | Integral bionic semipermeable membrane degasifier |
| CN106522902A (en) * | 2016-12-29 | 2017-03-22 | 西安石油大学 | Gas well underground rotational flow atomization water drainage and gas recovery device |
| CN106640031A (en) * | 2016-11-29 | 2017-05-10 | 东北石油大学 | Downhole same-well injection-production gas-liquid separator |
| CN106837291A (en) * | 2017-02-17 | 2017-06-13 | 中国石油大学(华东) | Oil jacket annular space gas-liquid separation device in non-conventional gas well head |
| CN109488277A (en) * | 2018-11-28 | 2019-03-19 | 青岛理工大学 | It is layered cage and sieves integrated cyclone degasser |
| CN110617051A (en) * | 2019-10-31 | 2019-12-27 | 刘曾珍 | Gas discharge device in inverted backflow filling system |
| CN111715018A (en) * | 2019-10-15 | 2020-09-29 | 邵阳中力纺织机械技术有限公司 | Gas-liquid separation device for waste gas dust removal |
| CN113694567A (en) * | 2021-09-15 | 2021-11-26 | 中国石油大学(华东) | Two-stage gas-liquid mixing conical helical field separation device and online control system |
| CN113898319A (en) * | 2020-06-22 | 2022-01-07 | 中国石油化工股份有限公司 | High-gas-content well sucker-rod pump lifting effect-improving device and process pipe column |
| CN115432175A (en) * | 2022-11-08 | 2022-12-06 | 中国空气动力研究与发展中心低速空气动力研究所 | Jet flow rectification structure, jet flow control valve, jet flow control system and flight equipment |
| CN115788420A (en) * | 2022-12-26 | 2023-03-14 | 西南石油大学 | Device and method for simulating blockage of shaft by hydrate in gas production process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1596091A1 (en) * | 1988-10-11 | 1990-09-30 | Инженерный Центр Производственного Объединения "Нижневартовскнефтегаз" | Downhole gas separator |
| CN1688792A (en) * | 2002-09-06 | 2005-10-26 | 詹姆斯·E·莫里森 | Downhole separator and method |
| RU2286449C2 (en) * | 2004-02-03 | 2006-10-27 | "Центр Разработки Нефтедобывающего Оборудования" ("Црно") | Gas separator for submersed centrifugal pump |
| CN101319608A (en) * | 2007-06-08 | 2008-12-10 | 中国石油大学(北京) | Method for down-hole removing hydrogen sulphide in natural gas |
| CN201568039U (en) * | 2009-12-16 | 2010-09-01 | 中国石油集团渤海钻探工程有限公司 | Multi-phase underground liquid-gas separator |
| CN204126627U (en) * | 2014-09-17 | 2015-01-28 | 中国石油大学(华东) | Double-cylinder type two-stage axial flow down-hole degasser |
-
2014
- 2014-09-17 CN CN201410480040.0A patent/CN104196516B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1596091A1 (en) * | 1988-10-11 | 1990-09-30 | Инженерный Центр Производственного Объединения "Нижневартовскнефтегаз" | Downhole gas separator |
| CN1688792A (en) * | 2002-09-06 | 2005-10-26 | 詹姆斯·E·莫里森 | Downhole separator and method |
| RU2286449C2 (en) * | 2004-02-03 | 2006-10-27 | "Центр Разработки Нефтедобывающего Оборудования" ("Црно") | Gas separator for submersed centrifugal pump |
| CN101319608A (en) * | 2007-06-08 | 2008-12-10 | 中国石油大学(北京) | Method for down-hole removing hydrogen sulphide in natural gas |
| CN201568039U (en) * | 2009-12-16 | 2010-09-01 | 中国石油集团渤海钻探工程有限公司 | Multi-phase underground liquid-gas separator |
| CN204126627U (en) * | 2014-09-17 | 2015-01-28 | 中国石油大学(华东) | Double-cylinder type two-stage axial flow down-hole degasser |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640031A (en) * | 2016-11-29 | 2017-05-10 | 东北石油大学 | Downhole same-well injection-production gas-liquid separator |
| CN106640031B (en) * | 2016-11-29 | 2023-02-14 | 东北石油大学 | Gas extraction and injection separator for same underground well |
| CN106401582A (en) * | 2016-11-30 | 2017-02-15 | 吉林大学 | Integral bionic semipermeable membrane degasifier |
| CN106522902A (en) * | 2016-12-29 | 2017-03-22 | 西安石油大学 | Gas well underground rotational flow atomization water drainage and gas recovery device |
| CN106837291A (en) * | 2017-02-17 | 2017-06-13 | 中国石油大学(华东) | Oil jacket annular space gas-liquid separation device in non-conventional gas well head |
| CN109488277A (en) * | 2018-11-28 | 2019-03-19 | 青岛理工大学 | It is layered cage and sieves integrated cyclone degasser |
| CN111715018A (en) * | 2019-10-15 | 2020-09-29 | 邵阳中力纺织机械技术有限公司 | Gas-liquid separation device for waste gas dust removal |
| CN110617051A (en) * | 2019-10-31 | 2019-12-27 | 刘曾珍 | Gas discharge device in inverted backflow filling system |
| CN113898319A (en) * | 2020-06-22 | 2022-01-07 | 中国石油化工股份有限公司 | High-gas-content well sucker-rod pump lifting effect-improving device and process pipe column |
| CN113694567A (en) * | 2021-09-15 | 2021-11-26 | 中国石油大学(华东) | Two-stage gas-liquid mixing conical helical field separation device and online control system |
| CN113694567B (en) * | 2021-09-15 | 2022-10-28 | 中国石油大学(华东) | Two-stage gas-liquid mixing conical spiral field separation device |
| CN115432175A (en) * | 2022-11-08 | 2022-12-06 | 中国空气动力研究与发展中心低速空气动力研究所 | Jet flow rectification structure, jet flow control valve, jet flow control system and flight equipment |
| CN115788420A (en) * | 2022-12-26 | 2023-03-14 | 西南石油大学 | Device and method for simulating blockage of shaft by hydrate in gas production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104196516B (en) | 2016-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104196516A (en) | Double-barrel type two-stage axial flow downhole degassing device | |
| CN104801071B (en) | The online gas-liquid separation device of two-stage axial-flow type submarine pipeline | |
| CN109356562B (en) | Underground sand-filtering type gas-liquid separation device | |
| CN106861296A (en) | A kind of duct type NGL cyclone separator | |
| CN110173254B (en) | Underground double-cylinder single-stage adjustable gas-liquid separator | |
| CN104056472B (en) | Squirrel-cage two-stage eddy flow equipment for separating liquid from solid | |
| CN204126627U (en) | Double-cylinder type two-stage axial flow down-hole degasser | |
| CN106334635A (en) | Online three-stage eddy flow dehydration device of submarine pipeline | |
| CN107413085A (en) | A kind of online desanding device of oil-gas pipeline | |
| CN201196043Y (en) | Internal conduction impeller-type nozzle for coiled tubing | |
| CN102712003A (en) | Cyclone separator for high gas volume fraction fluids | |
| CN201908642U (en) | Vortex desanding device of oil gas wellhead | |
| CN207111067U (en) | Tandem type quantifies shear force separation gas anchor and the combination of multi-stage quantization gas anchor | |
| CN203891849U (en) | Spiral detachable slotted oblique-wire sand filter pipe | |
| CN205965280U (en) | Pipeline formula crude separation ware | |
| CN203886249U (en) | Squirrel cage type two-stage swirl solid-liquid separation device | |
| CN203879480U (en) | Pumping well cylindrical type separator | |
| CN109488277B (en) | Layering cage type screening integrated cyclone degassing device | |
| CN115387760B (en) | Jet swirling device, self-circulation jet swirling drainage gas production system and method | |
| CN108786356B (en) | Mixed material separation and dust fall device and application thereof | |
| CN207470788U (en) | Jet tube high pressure flash valve | |
| CN206045605U (en) | A kind of oil-gas mixed delivery pump auxiliary device | |
| CN105257273B (en) | It is a kind of at sled gs-oil separator | |
| CN216617490U (en) | Multistage overflow gas-liquid cyclone separation device | |
| CN205154133U (en) | It uses oil and gas separator to become sled |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |