CN2237712Y - Suction matching device for hollow rod rotary bolt pump sleeve - Google Patents

Abstract

The utility model relates to a suction matching device for hollow rod rotary bolt pump sleeve with advantages of the removal of the oil conduit of the oil field production well, simplification for the well mouth and the power transmission equipment, and a matching device provided for the economic benefit enhancement of strippers. A hollow stem 14 is directly connected with a subsurface progressing cavity pump sleeve (a stator 16) to make the stator rotate. The dubbing pumping from the cavity of a rotor 17 is transported to the ground through the hollow stem. A connecting rod (20, 51) is connected with an anti-rotation anchor 19 to support the bottom hole through two cardan joints at the lower part of the rotor. The anti-rotation anchor buckles with the casing tube 15 to prevent the rotor from rotation. The surface casing well mouth adopts a cross joint 42 and a sealing member in place of the complicated and heavy Christmas tree. The electrical motor 9 can drive the great belt pulley 7, leaving out the gearbox and the change gear components.

Description

Hollow stem rotary screw pump block pumping corollary apparatus

The utility model relates to the field produces well with hollow stem rotary screw pump block (stator) pumping corollary apparatus, comprises down-hole and ground corollary apparatus.

Along with Oilfield developing, especially oil field development is to the later stage, and strata pressure descends gradually, oil reservoir infiltration also becoming hyposmosis, and most producing well output descend.If still adopt conventional oil pumping machine oil pumping in this situation, certainly will cause low load with strong power, the high investment poor benefit, even loss appears.At the variation of production situation, the well example of field use screw pump is more both at home and abroad, and it is fit to hyposmosis, low-producing oil well, and succeeds; Different size uses the pump of different condition, basically forms series, and supporting technology is perfect substantially.In order to increase the moment of torsion of used sucker rod, hollow rod is used widely, also is applied on the producing well of screw pump, and various performance indications all satisfy the requirement of screw pump oil pumping.Adopt the well of hollow rod drive screw pump oil pumping, wherein screw pump utilizes hollow stem to be lowered in the oil pipe, and fluid gives rise to ground from hollow stem and the formed annular space of oil pipe, and oil pipe is essential here.Because well pattern such as cobweb on the oil field, producing well is thousands of, and all more than a km, every mouthful of well also will be lowered to oil pipe except that setting of casing for every mouthful of well depth, and used tubing also is huge.In addition, there is the production wellhead of oil pipe will adorn production tree down, the heavy cost height of the complex structure of its production tree.Have again, in power drive device, adopt the gearbox speed change, and the cost of gearbox is also higher; Between the hollow stem of the rotation that while gearbox and needs drive the set of gears transmission will be arranged, its structure is also complicated.Comprehensively above-mentioned, for low-producing well (3～50 side/day), adopt above-mentioned supporting technology, also there is very big waste, also can cause receipts not support out, bring loss to the oil field.

The purpose of this utility model is to overcome hyposmosis, the existing in process of production shortcoming of low yield oil well, and provide a kind of hollow rod both transfer torque make the screw pump pumping corollary apparatus of fluid lifting passage, avoid waste greatly, help business accounting.

The purpose of this utility model can reach by the following technical programs: be lowered to screw pump with hollow (oil pumping) bar in the oil well casing on the oil field, centralizer is housed on the hollow stem, packer is housed on the screw pump, is connected with anti-rotation anchor and artificial bottom of a well support bar under the screw pump; Also have ground wellhead assembly, power transmitting apparatus and dosing tank.The utility model is the empty beam hanger in above-mentioned down-hole directly to be connected with stator on the subsurface progressive cavity to drive rotate, and the lower end of pump upper rotor part is connected with connecting rod with snap ring, and this connecting rod segmentation connects with outer sleeve, has respectively slipped into universal joint in each outer sleeve; The lower end of stator is with sleeve again on the pump outside connecting rod, and this sleeve connects the path sleeve by reducer union, and the external diameter of above-mentioned snap ring moves down distance greater than the internal diameter of this path sleeve under external force in order to the restriction snap ring.Above-mentioned each universal joint is the plate body of mutually vertical " cross " shape, and two ends respectively embed the cooperation of formation sphere mutually with joint and are connected in series with on the connecting rod with pivot pin, form the movable body of " cross " shape, can make the pump upper rotor part movable within the specific limits.Above-mentioned connecting rod connects the anti-rotation anchor, props up and the artificial bottom of a well with support bar again; The top formation basin shape face of each centralizer forms the annular gap between hollow stem and the centralizer on the hollow stem.In the wellhead assembly of ground four-way junction of casing is arranged, lower flange is housed on this four-way and uses bolted upper flange plate, be inserted with can on the upper flange plate, inside and outside bulge loop is arranged on the shell, outer bulge loop is stuck on the lower flange; On the hollow stem that passes, be with interior cover between the upper and lower flange, between the two ends of interior cover and the hollow stem sealing mat is housed, and in lower seal pad place, put clip is housed, sealed packing, interior pressure cap and bearing are housed in the formed ring cavity between interior cover and shell and the internal projecting ring thereof, and its bottom bracket is connected on the shell with bolt.With the support frame grease-box is arranged on the above-mentioned upper flange plate, motor and dosing tank in the power transmitting apparatus are housed on this support.The motor upper belt-wheel drives big belt pulley with belt, and the axle of big belt pulley is a sleeve, passes hollow stem in the sleeve, and sleeve passes fuel tank, and between the upper and lower case lid (end) of fuel tank bearing is housed respectively; There is rib body cover the upper end of sleeve, and the rib body puts and fastens slips and fastens, and this slips also is stuck in hollow stem simultaneously, with transfer torque hollow stem is rotated.Be connected with pipeline between the upper and lower part of above-mentioned dosing tank and the well head four-way.The fixing support that forms by upper and lower flange and bolt on the guard shield of above-mentioned big belt pulley, sit on the upper flange plate can is arranged, internal projecting ring is arranged in the shell and sealed packing and bearing are housed by in the formed ring cavity of hollow stem that passes, be pressed with interior pressure cap on the packing and be connected fuel-displaced chewing, fuel-displaced chewing with oil guide pipe links to each other, and oil guide pipe is connected into oil storage tank.

Above-mentioned hollow stem can be left-hand with stator and is threaded, in case in rotation process back-off.With hollow (oil pumping) bar directly with subsurface progressive cavity on stator be connected driven rotary, the pump upper rotor part is connected in the anti-rotation anchor until the artificial bottom of a well with lower link, rotor is not rotated with stator, the fluid of extracting out enters hollow stem from the cavity lifting between the stator and rotor and flows out ground, hollow stem both passed to pump as torque tube, make the oil pipe of oil flow channel again, saved oil pipe and the ground well head production tree in the sleeve pipe, only adorn the effect that four-way can be finished oil transportation, test and dosing; Reach the reduction of speed purpose by the driven by motor big belt pulley on the power, the axle of belt pulley adopts axle sleeve type to be placed on the hollow stem, the pumping of the transmission of torque hollow stem of belt pulley drive subsurface progressive cavity, simplified surface well jaws equipment and dynamic retarding transmission member, thereby can realize its purpose.

The utility model is compared with the hollow stem screw pump pumping corollary apparatus that adopts oil pipe can have following effect: by hollow rod double as fluid rising passway, save oil pipe, not only save tubing, also simplify operation procedure, can increase work efficiency; Ground wellhead assembly and power speed changing drive member all obtain simplifying, and these all help reducing goes into operation and reduction labour intensity, can accomplish few input high benefit economically.

Fig. 1 be the utility model by ground to down-hole corollary apparatus schematic diagram;

Fig. 2 is upper end and fuel-displaced office's sectional drawing of chewing 3 movable sealings of Fig. 1 hollow stem 14;

Fig. 3 is power transmission members on Fig. 1 (7,8,9, a 10) structural representation;

Fig. 4 is the complete section structure chart of wellhead assembly 13 on Fig. 1;

Fig. 5 be on Fig. 1 on hollow rod 14 usefulness reducer unions 49 and the screw pump stator 16 be connected the complete section structure chart;

Fig. 6 is the stator 16 and rotor 17 bottom connector complete section structure charts of screw pump on Fig. 1;

Fig. 7, the 8th, rotor 17 bottoms of screw pump connect two universal joint complete section configuration diagram with connecting rod 51 segmentations on Fig. 1;

Fig. 9 is that screw pump upper rotor part 17 bottoms link anti-rotation anchor 19 until the artificial bottom of a well diagrammatic sketch with connecting rod 51 on Fig. 1;

Figure 10 is the structural representation of centralizer on Fig. 1 hollow rod 14.

Below in conjunction with accompanying drawing will the utility model is described in further detail:

Make subsurface progressive cavity (16,17) torque tube at field produces casing 15 usefulness hollow (oil pumping) bar 14, be with several centralizers 48 on the hollow stem 14, screw pump (16, packer 47 is housed 17), is connected with anti-rotation anchor 19 and artificial bottom of a well support bar 51 on the screw pump (16,17); There is wellhead assembly 13 on ground, power transmitting apparatus and add spray tank 4.In conjunction with shown in Figure 6, the utility model is with hollow stem 14 direct and upward stator 16 connections of screw pump (16,17) of servant down-hole, make hollow stem 14 drive stators 16 rotations, and rotor 17 does not rotate by Fig. 5.The lower end of rotor 17 is connected with connecting rod 20, and the two (17,20) are with snap ring (50) in the junction, as shown in Figure 6.Shown in Fig. 6～8.Connecting rod (20) segmentation is connected with outer sleeve (60,70), and universal joint has respectively been slipped in outer sleeve (60,70) lining; The lower end of stator 16 is with sleeve 18 on connecting rod 20, sleeve 18 is by reducer union 53 branch sleeves 54; The internal diameter of its middle sleeve 54 is less than the internal diameter of sleeve 18, and the external diameter of snap ring 50 should be greater than the internal diameter of sleeve 54; Above-mentioned each universal joint is orthogonal plate body (74,61; 75,67) form " cross " shape, form movable body, can get on the bus out each plate body (74,61 by cylinder, 75,67) week upwards is the part cylinder, the two ends of each universal joint each with connecting rod 20 on sectionalizing joint (56,63,69) embed mutually, promptly at joint (56,63,69) corresponding " U " shape groove of getting on the bus out embeds the back mutually with pivot pin (59,62; 65,68) connection is gone here and there on connecting rod 20, and movable body of each of formation " cross " shape and joint are the sphere fitting face between (56,63,69).Be connected with universal joint on the back link 20 connect anti-rotation anchor 19 again with support bar 51 until propping up (stretching) to the artificial bottom of a well, show as Fig. 9.The top formation basin shape 71 of each centralizer (48) on the hollow stem 14 can stockpile the soup that flows into from ground dosing tank 4, forms annular gap 73 between the two (14,48), and soup can flow down from this gap, shows as Figure 10.By shown in Figure 4, it is the complete section figure of sleeve pipe 15 well head ground installations 13, only adorns a four-way 42 on sleeve pipe 15 well heads, the upper flange plate 43 that dress (seat) has flange (45) and connects with bolt (35,36) on the four-way 42; Be inserted with can 37 on the flange 45, have the outer bulge loop 76 of inside and outside bulge loop (77,76) to be stuck on the flange 45 on the shell 37; Cover 34 was equipped with sealing mat (41 between the two ends of interior cover 34 and the hollow stem 14 in two flange (45,43) were with on the hollow stem 14 that passes, 78), and on the interior cover 34 at lower seal pad 41 places, clip 46 is housed,, well head gas can not be scurried out to realize the sealing at well head place; In the formed annular chamber sealed packing 33, interior pressure cap 44 and bearing (38,39) are housed between interior cover 34 and shell 37 and the internal projecting ring 77 thereof, its bottom bracket 39 usefulness screw rods 40 are connected on the shell 37, and upper flange plate 43 is pressed on the interior pressure cap 44; And between shell 37 and flange 45, sealing mat is housed also, be used to realize the sealing at well head place.With 11 on support grease-box 10 is arranged on above-mentioned flange 43, (in the fuel tank) both sides of support 11 are equipped with the motor 9 in the power transmitting apparatus and are added spray tank 4; Wherein fuel tank can adopt circular cylinder, with under two flange (43,45) on same axial line, and tank wall and upper and lower case lid are all thicker.Motor 9 upper belt-wheels 8 usefulness belts 28 drive big belt pulley 7, and the axle of wheel 7 adopts sleeve 12, and sleeve 12 passes fuel tank 10, and sleeve is passed by hollow stem 14; There is rib body cover 52 upper end of sleeve 12, is interlocked with fastening slips 80 on the rib body cover 52, and slips 80 also is stuck on the hollow stem 14 that passes, and by slips 80 moment of torsion is passed to hollow stem 14, makes its rotation drive subsurface progressive cavity (16,17) work, as shown in Figure 3.Be connected with two pipes (5,6) between above-mentioned upper and lower part that adds spray tank 4 and the four-way 42, pipe 6 is to add drug liquid tube, adds down-holes by four-way 42; Pipe 5 is the top that escape pipe adds spray tank 4 in the well, makes top have gas pressure, sets up the dynamic equilibrium that adds spray tank, helps to add soup in well.Fixing by upper and lower flange (72 on the guard shield of above-mentioned big belt pulley 7,21) support of bolt 22 formation, sit on the upper flange plate 72 can 23 is arranged, 23 li on shell has internal projecting ring and by in the hollow stem 14 formed ring cavities that pass sealed packing 25 and bearing 26 is housed, pressure cap 24 and be connected to and fuel-displacedly chew 3 in being pressed with on the packing 25.Fuel-displacedly chew 3 and link to each other with oil guide pipe 2, oil guide pipe is connected on the oil storage tank 1; As shown in Figure 2, it is the hollow stem 14 upper end hermetically-sealed constructions that the oil pipe effect is arranged, and chews 3 fluid in the pumping and imports oil tanks with fuel-displaced.

Above-mentioned hollow stem 14 directly can be left-hand with stator 16 and is threaded.By shown in Figure 3, the axle head of motor 9 is equipped with gland and connects with screw 27; Between the wheel hub of axle sleeve 12 and wheel 7 taper sheath 30 is housed from lower to upper, between the two (12,30) key 31 is housed, be connected on the wheel hub, clip 29 also is housed at the top bared end that overlaps 30 with bolt 32 grips 30.In conjunction with shown in Figure 6, hollow stem 14 can be connected with stator 16 on the screw pump with deformable joints 49 by Fig. 5, also is with protection nut 55 on the sleeve 54; In conjunction with shown in Figure 8, it is fixing with screw (57,66) that gland (58,64) can be equipped with in the end of pivot pin (59,65) by Fig. 7.By Fig. 7 and shown in Figure 8, there is two outer sleeves (60,70) lining respectively to slip into universal joint, each universal joint can be by the cylinder orthogonal plate body (74,61) of getting on the bus out, and identical plate body (75,67) is also arranged on another universal joint, and each forms " cross " shape; With in the joint that embeds mutually common contact 63 and two end joints (56,69) are arranged, and connect with two pivot pins (59,62) between each universal joint and joint, another also uses pivot pin (65,68) connection.By shown in Figure 4, bolt (35,36) is made of screw rod 35 and nut 36, and bearing (38,39) is made of ball 38, bearing 39 and gland.

From the above, hollow stem 14 directly is connected with subsurface progressive cavity cover (stator 16), and the fluid of pumping exports ground to by hollow stem, has saved oil pipe; Make a shaft bottom support bar with connecting rod (20,51) between pump upper rotor part and the shaft bottom, the rotation that anti-rotation anchor 19 can prevent rotor 17 is housed on the connecting rod, and the connecting rod upper cardan can make rotor that suitable activity is arranged, with anti-jamming.

Play earlier producing well primary tube post during job execution, the down-hole part of this device is connected G.I.H in succession by signal order shown in Figure 1, surface driving part and well head black box are installed then, adjust at last, fastening good each a chain of joint, the production of can starting shooting.Operating process content when being lowered to operation was identical when this device tripped out from well, reversed in order.To note making the torque wrench moment of each connecting link to reach the regulation requirement in the process from oil well, tripping out and be lowered to, in order to avoid come off aborning.

Claims (2)

1. hollow stem rotary screw pump block pumping corollary apparatus that field produces is aboveground, oil well casing (15) lining is lowered to screw pump (16 with hollow (oil pumping) bar (14), 17), centralizer (48) is housed on the hollow stem (14), screw pump (16, packer (47) is housed 17), is connected with anti-rotation anchor (19) and artificial bottom of a well support bar (51) under the screw pump (16,17); Ground wellhead assembly, power transmitting apparatus and dosing tank (4) is characterized in that:

(a) hollow stem (14) is connected with stator (16) on the screw pump, and the lower end of rotor (17) is connected with connecting rod (20) with snap ring (50), and connecting rod (20) segmentation connects with outer sleeve (60,70), and universal joint has respectively been slipped in outer sleeve (60,70) lining; The lower end of stator (16) is with sleeve (18) outside connecting rod (20), sleeve (18) connects path sleeve (54) by reducer union (53), and wherein the external diameter of snap ring (50) is greater than the internal diameter of path sleeve (54);

(b) each universal joint is the plate body (74,61) of mutually vertical " cross " shape, and two ends respectively embed the cooperation of formation sphere mutually with joint (56,63) and go here and there on connecting rod (20) with pivot pin (59,62);

(c) the last anti-rotation anchor (19) that connects of connecting rod (20) uses support bar (51) to prop up and the artificial bottom of a well again;

(d) hollow stem (14) is gone up the top formation basin shape face (71) of each centralizer (48), forms annular gap (73) between the two (14,48);

(e) in the ground wellhead assembly (13) four-way junction of casing (42) is arranged, four-way (42) is equipped with flange (45) and with bolt (35,36) flange connecting dish (43), be inserted with can (37) on the flange (45), inside and outside bulge loop (77 is arranged on the shell (37), 76), outer bulge loop (76) is stuck on the flange (45);

(f) two flange (45,43) are with interior cover (34) on the hollow stem that passes (14), between the two ends of interior cover (34) and the hollow stem (14) sealing mat (41,78) are housed, and on the interior cover (34) that lower seal pad (41) is located clip (46) are housed; In the formed ring cavity sealed packing (33), interior pressure cap (44) and bearing (38 are housed between interior cover (34) and shell (37) and the internal projecting ring (77) thereof, 39), its bottom bracket (39) is connected on the shell (37) with bolt (40), and upper flange plate (43) is pressed on the interior cap (44);

(g) with support (11) frame grease-box (10) is arranged on the above-mentioned flange (43), motor (9) and dosing tank (4) in the power transmitting apparatus are housed on the support (11);

(h) motor (9) upper belt-wheel (8) drives big belt pulley (7) with belt (28), the axle of wheel (7) is sleeve (12), hollow stem (14) is passed in sleeve (12) lining, and sleeve (12) passes fuel tank (10), and between the upper and lower case lid of fuel tank (10) bearing (79) is arranged respectively; There is rib body cover (52) upper end of sleeve (12), and rib body cover (52) is gone up with fastening slips (80) and fastened, and slips (80) is stuck on the hollow stem (14) simultaneously;

(i) be connected with two pipes (5,6) between the upper and lower part of dosing tank (4) and the four-way (42);

(j) fixing by upper and lower flange (72 on the guard shield of above-mentioned big belt pulley, 21) and the support that forms of bolt (22), upper flange plate (72) is gone up to sit can (23), there is internal projecting ring shell (23) lining and is passed is equipped with sealed packing (25) and bearing (26) in the formed ring cavity of hollow stem (14), be pressed with interior pressure cap (24) on the packing (25) and be connected fuel-displaced chewing (3), fuel-displaced chewing (3) links to each other with oil guide pipe (2), and oil guide pipe (2) is connected on the oil storage tank (1).

2. pumping corollary apparatus according to claim 1 is characterized in that: hollow stem (14) can be left-hand with stator (16) and is threaded.

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