CN216197993U - Four-position five-way positive and negative sand washing reversing valve with axial in-line valve core - Google Patents
Four-position five-way positive and negative sand washing reversing valve with axial in-line valve core Download PDFInfo
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- CN216197993U CN216197993U CN202122555168.7U CN202122555168U CN216197993U CN 216197993 U CN216197993 U CN 216197993U CN 202122555168 U CN202122555168 U CN 202122555168U CN 216197993 U CN216197993 U CN 216197993U
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Abstract
The utility model relates to a four-position five-way positive and negative sand washing reversing valve with an axial in-line valve core, which comprises a valve body, a confluence cover plate and a side sealing cover plate, and is technically characterized in that: an upper cylindrical cavity and a lower cylindrical cavity which are distributed at intervals and are parallel to each other are arranged in the valve body, a columnar upper valve core is arranged in the upper cylindrical cavity, a columnar lower valve core is arranged in the lower cylindrical cavity, and rotating shafts supported on the side sealing cover plate of the valve body are respectively arranged at two ends of the upper valve core and the lower valve core. The utility model solves the problems of easy sand blocking and sand burying of the sand washing pipe column during the sand washing operation of the existing oil well, greatly reduces the potential safety hazard and obviously improves the sand washing efficiency.
Description
Technical Field
The utility model relates to the technical field of oil well sand washing operation, in particular to a four-position five-way positive and negative sand washing reversing valve with an axial in-line valve core, which is suitable for continuous positive and negative sand washing operation of an oil well.
Background
During the normal production process of an oil well, due to the scouring of fluid and the change of formation stress, sand grains in a cemented and unconsolidated sandstone formation enter a casing along with the flow of fluid, some sand grains are deposited in the casing along with the fluid flow to the ground, and the sand grains in the casing are accumulated more and more along with the time, so that the normal production of the oil well is influenced. Along with the fact that various large oil fields in China enter the middle and later periods of exploitation in succession, sand production of oil wells becomes an increasingly severe problem, and sand washing operation of the oil wells becomes a necessary means for recovering the production energy of the oil wells.
At present, the sand washing operation of the oil field and the oil well usually adopts a conventional positive sand washing or back sand washing mode. The positive sand flushing mode has strong impact force but weak sand carrying capacity, and has sand blocking and sand burying sand flushing pipe column risk factors; the sand-back flushing mode has strong sand-carrying capacity but weak impact force, and has sand-blocking sand-flushing pipe column danger factors. The single positive flushing or back flushing has the potential safety hazards that the sand flushing pipe column is blocked by sand, blocked by sand and buried by sand.
The conventional sand washing operation of the oil well can not realize the reversing of positive sand washing and reverse sand washing, and meanwhile, the pump needs to be stopped when a single sand washing pipe is replaced in the conventional sand washing operation of the oil well. Therefore, the liquid level in the shaft is lowered, suspended sand is accumulated, and potential safety hazards of sand washing pipe column blockage and sand burying exist.
Disclosure of Invention
The utility model aims to provide a four-position five-way positive and negative sand flushing reversing valve with a simple structure and a reliable axial in-line valve core, which solves the problems of easy sand blockage and sand burying of a sand flushing pipe column during sand flushing operation of the existing oil well, greatly reduces potential safety hazards and obviously improves sand flushing efficiency.
The technical scheme of the utility model is as follows:
the utility model provides a positive and negative sand washing switching-over valve of quadbit five-way of axial in-line case, includes the valve body, locates the positive apron that converges of valve body, locates the side seal apron of valve body side, its technical essential is: an upper cylindrical cavity and a lower cylindrical cavity which are distributed at intervals and are parallel to each other are arranged in the valve body, a columnar upper valve core is arranged in the upper cylindrical cavity, a columnar lower valve core is arranged in the lower cylindrical cavity, and rotating shafts supported on the side sealing cover plate of the valve body are respectively arranged at two ends of the upper valve core and the lower valve core; axial flow channels are respectively arranged in the upper valve core and the lower valve core, a first switching hole site I, a second switching hole site II, a third switching hole site III and a fourth switching hole site IV are respectively and sequentially arranged on the peripheries of the upper valve core and the lower valve core along the axial direction, a radial through hole t1 communicated with the axial flow channels is arranged at the first switching hole site I of the upper valve core, a radial through hole j1 communicated with the axial flow channels is arranged at the second switching hole site II of the upper valve core, a radial through hole f1 communicated with the axial flow channels is arranged at the third switching hole site III of the upper valve core, and radial through holes m1, m2 and m3 communicated with the axial flow channels are arranged at the fourth switching hole site IV of the upper valve core; the first switching hole site I of the lower valve core is provided with radial through holes g1, g2 and g3 communicated with an axial flow channel of the first switching hole site I, the second switching hole site II of the lower valve core is provided with a radial through hole t2 communicated with the axial flow channel of the second switching hole site II, the third switching hole site III of the lower valve core is provided with a radial through hole j2 communicated with the axial flow channel of the third switching hole site III, and the fourth switching hole site IV of the lower valve core is provided with a radial through hole f2 communicated with the axial flow channel of the fourth switching hole site IV of the lower valve core;
the front surface of the valve body is provided with a radial hole flow passage Ta corresponding to a first switching hole position I of the upper valve core, a radial hole flow passage Ja corresponding to a second switching hole position II of the upper valve core, a radial hole flow passage Fa corresponding to a third switching hole position III of the upper valve core, a radial hole flow passage Tb corresponding to a second switching hole position II of the lower valve core, a radial hole flow passage Jb corresponding to a third switching hole position III of the lower valve core and a radial hole flow passage Fb corresponding to a fourth switching hole position IV of the lower valve core, and the front surface of the valve body is provided with a groove-shaped flow passage Tc communicated with the radial hole flow passages Ta and Tb, a groove-shaped flow passage Jc communicated with the radial hole flow passages Ja and Jb and a groove-shaped flow passage Fc communicated with the radial hole flow passages Fa and Fb; a radial hole flow channel M corresponding to the fourth switching hole position IV of the upper valve core and a radial hole flow channel G corresponding to the first switching hole position I of the lower valve core are arranged on the back of the valve body;
the back of the confluence cover plate is provided with a groove-shaped flow channel Td, the groove-shaped flow channel Td is buckled with the groove-shaped flow channel Tc to form a closed flow channel Te, the front of the confluence cover plate is provided with an outer channel T communicated with the groove-shaped flow channel Td, the outer channel T corresponds to the radial hole flow channel Tb, the back of the confluence cover plate is provided with a groove-shaped flow channel Jd, the groove-shaped flow channel Jd is buckled with the groove-shaped flow channel Jc to form a closed flow channel Je, the front of the confluence cover plate is provided with an outer channel J communicated with the groove-shaped flow channel Jd, the outer channel J corresponds to the radial hole flow channel Ja, the back of the confluence cover plate is provided with a groove-shaped flow channel Fd, the groove-shaped flow channel Fd is buckled with the groove-shaped flow channel Fc to form a closed flow channel Fe, the front of the confluence cover plate is provided with an outer channel F communicated with the groove-shaped flow channel Fd, and the outer channel F corresponds to the radial hole flow channel Fb.
In the four-position five-way positive and negative sand washing reversing valve with the axial in-line valve core, the number of the side sealing cover plates is four, every two side sealing cover plates are in a pair, the two pairs of side sealing cover plates are respectively packaged at two ends of the upper cylindrical cavity and the lower cylindrical cavity of the valve body, a bearing mounting hole is formed in the center of each side sealing cover plate, and a bearing used for being connected with a rotating shaft is arranged in each bearing mounting hole.
In the four-position five-way positive and negative sand flushing reversing valve with the axial in-line valve core, one of the rotating shafts at two ends of the upper valve core is a long rotating shaft I extending out of the side sealing cover plate, one of the rotating shafts at two ends of the lower valve core is a long rotating shaft II extending out of the side sealing cover plate, and the upper valve core and the lower valve core are driven to rotate by driving the long rotating shaft I and the long rotating shaft II to rotate.
The four-position five-way positive and negative sand flushing reversing valve with the axial in-line valve core is characterized in that the edges of the two ends of the upper valve core and the lower valve core are respectively provided with an annular sealing groove for nesting rubber rings, an annular sealing groove for nesting rubber rings is respectively arranged between two adjacent switching hole sites in the first switching hole site I, the second switching hole site II, the third switching hole site III and the fourth switching hole site IV, and the rubber rings are in close contact with the inner wall of the upper cylindrical cavity and the inner wall of the lower cylindrical cavity to seal the inner flow channel.
In the four-position five-way positive and negative sand washing reversing valve with the axial in-line valve core, the axial flow channel of the upper valve core is a cylindrical cavity flow channel A, the center lines of the radial through holes M1, M2 and M3 are intersected with the central axis of the cylindrical cavity flow channel A at the same point, in a positive sand washing operation state, the radial through hole M1 corresponds to the radial hole flow channel M on the back of the valve body, and the difference between the radial through hole M2 and the radial through hole M3 and the radial through hole M1 is 100 degrees respectively; the radial through hole f1 of the upper valve core corresponds to the radial hole flow passage Fa of the valve body, the radial through hole j1 of the upper valve core is not communicated with the radial hole flow passage Ja of the valve body, and the radial through hole t1 of the upper valve core is not communicated with the radial hole flow passage Ta of the valve body; when the single piece operation is changed by positive sand washing, the radial through hole M3 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 corresponds to the radial hole runner Ja of the valve body, and the radial through hole t1 is not communicated with the radial hole runner Ta of the valve body; when the sand backwashing operation state is carried out, the radial through hole M2 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 is not communicated with the radial hole runner Ja of the valve body, and the radial through hole t1 corresponds to the radial hole runner Ta of the valve body; when single piece operation is carried out by back flushing, the radial through hole M2 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 is not communicated with the radial hole runner Ja of the valve body, and the radial through hole t1 corresponds to the radial hole runner Ta of the valve body.
In the four-position five-way positive and negative sand flushing reversing valve with the axial in-line valve core, the axial flow channel of the lower valve core is a cylindrical cavity flow channel B, the central lines of the radial through holes G1, G2 and G3 are intersected with the central axis of the cylindrical cavity flow channel B at the same point, in a positive sand flushing operation state, the radial through hole G1 corresponds to the radial hole flow channel G on the back of the valve body, the radial through hole G2 is 100 degrees different from the radial through hole G1, the radial through hole G3 is 100 degrees different from the radial through hole G2, the radial through hole f2 of the lower valve core is not communicated with the radial hole flow channel Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole flow channel Jb of the valve body, and the radial through hole t2 of the lower valve core corresponds to the radial hole flow channel Tb of the valve body; when the single-joint operation of positive sand washing is carried out, the radial through hole G1 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core is not communicated with the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core corresponds to the radial hole runner Tb of the valve body; when the sand backwashing operation is carried out, the radial through hole G2 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core corresponds to the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core is not communicated with the radial hole runner Tb of the valve body; when single piece operation is carried out by back flushing, the radial through hole G3 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core is not communicated with the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core corresponds to the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core is not communicated with the radial hole runner Tb of the valve body.
The utility model has the beneficial effects that:
through setting up upper and lower case and valve body cooperation, make this valve form the five-way structure, under the condition that need not stop the pump, can realize just washing sand and recoil sand alternative work, just wash and trade single operation, the recoil trades the quadbit operating condition of single operation, the problem that the sand washing tubular column was easy sand to be stifled, sand buries when having solved current oil well sand washing operation, the vexed condition of pump can not appear, greatly reduced the potential safety hazard, showing simultaneously and improving sand washing efficiency, sand washing speed can promote the triple of conventional sand washing speed.
The method comprises the following steps:
1. the conventional sand washing needs to stop the pump and continue to connect a single joint, if the time is longer, the liquid level in the shaft drops, the suspended sand is accumulated, and the risk of sand blocking the pipe column exists. In particular, the sand blocking is easily caused by the conventional sand washing of the horizontal well. During the construction of the utility model, the pump does not need to be stopped, the sand washing liquid keeps continuous, the fluid in the well carries sand to continuously return upwards, the sand carrying speed is improved, the time for connecting a single joint and needing to circularly wash the well is saved, and the sand washing operation speed is greatly improved. According to the conservative speed on site, after the sand washing pipe column is put down from the connection of a single joint, the time is less than 10 minutes when the sand washing pipe column is washed once one single joint is washed, the operation is continuous, and the efficiency is high.
2. The positive and negative sand washing mode is selected at will, if the pipe string meets the resistance under the condition of back sand washing, the positive sand washing mode can be converted, the impact force is increased, and after the resistance passes through, the back sand washing mode is converted again, and the construction is continued.
3. For a horizontal well with serious stratum depletion and incapability of establishing sand washing liquid circulation, the difficult problem that the sand washing liquid cannot return can be effectively solved by connecting a reflection flow pen point, adding foam, matching a nitrogen vehicle and the like, sand washing construction of the leaked horizontal well is completed, and the productivity of an oil well is recovered. Meanwhile, the method is also suitable for construction processes of continuous drilling of cement and the like of the screw pump, and can keep the continuous backflow of the well entering fluid with impurities and reduce the pump blocking probability.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a perspective view of the present invention with the cover plate removed;
FIG. 4 is a perspective view of the convergence plate of the present invention;
FIG. 5 is a rear view of FIG. 4;
FIG. 6 is a schematic view in partial cutaway of FIG. 3;
FIG. 7 is a schematic view in partial cutaway of FIG. 2;
FIG. 8 is a perspective view of the valve body of the present invention with the front side cut away;
FIG. 9 is a perspective view of the valve body of the present invention with the back removed;
FIG. 10 is a schematic view of FIG. 8 with the upper and lower spools removed;
FIG. 11 is a schematic view of FIG. 9 with the upper and lower spools removed;
FIG. 12 is a schematic structural view of the upper valve core;
FIG. 13 is a rear view (in partial cutaway) of FIG. 12;
FIG. 14 is a schematic view of the structure of the lower core;
FIG. 15 is a rear view (in partial cutaway) of FIG. 14;
FIG. 16 is a schematic view of the subject convergence plate in partial cutaway;
FIG. 17 is a schematic cross-sectional view of the present invention at the first switching hole site I, the second switching hole site II, the third switching hole site III and the fourth switching hole site IV of FIG. 6;
FIG. 18 is a schematic diagram of the operation of the present invention from a positive sand flush valve position to a back sand flush valve position;
FIG. 19 is a schematic diagram of the operation of the present invention in which the positive sand flushing valve position is changed to a single valve position;
FIG. 20 is a schematic diagram of the operation of the present invention with a single reverse sand valve position to a single reverse sand valve position.
In the figure: 1. valve body, 2, side sealing cover plate, 3, confluence cover plate, 4, rotating shaft, 5, radial hole flow passage G, 6, radial hole flow passage M, 7, radial hole flow passage Ta, 8, radial hole flow passage Ja, 9, radial hole flow passage Fa, 10, groove-shaped flow passage Tc, 11, groove-shaped flow passage Jc, 12, groove-shaped flow passage Fc, 13, radial hole flow passage Tb, 14, radial hole flow passage Jb, 15, radial hole flow passage Fb, 16, outer channel J, 17, outer channel T, 18, outer channel F, 19, groove-shaped flow passage Fd, 20, groove-shaped flow passage Jd, 21, groove-shaped flow passage Td, 22, upper valve core, 23, lower valve core, 24, annular sealing groove, 25, bearing mounting hole, 26, upper cylindrical cavity, 27, lower cylindrical cavity, 28, radial through hole M2, 29, radial through hole M3, 30, radial through hole F1, 31, radial through hole J1, 32, radial through hole T1, 33, radial through hole M1, radial through hole, 34. The flow passage comprises a cylindrical cavity flow passage A, 35, radial through holes g3, 36, radial through holes g2, 37, radial through holes t2, 38, radial through holes f2, 39, radial through holes g1, 40, a cylindrical cavity flow passage B, 41 and a radial through hole j 2.
Detailed Description
The utility model is described in detail below with reference to the accompanying drawings.
As shown in fig. 1-20, the four-position five-way positive and negative sand-flushing reversing valve with an axial in-line valve core comprises a valve body 1, a confluence cover plate 3 arranged on the front surface of the valve body 1, and a side sealing cover plate 2 arranged on the side surface of the valve body 1.
An upper cylindrical cavity 26 and a lower cylindrical cavity 27 which are distributed at intervals and parallel to each other are arranged in the valve body 1, a cylindrical upper valve core 22 is arranged in the upper cylindrical cavity 26, a cylindrical lower valve core 23 is arranged in the lower cylindrical cavity 27, and rotating shafts 4 supported on the valve body side sealing cover plate 2 are respectively arranged at two ends of the upper valve core 22 and the lower valve core 23. Axial flow channels are respectively arranged in the upper valve core 22 and the lower valve core 23, and a first switching hole position I, a second switching hole position II, a third switching hole position III and a fourth switching hole position IV are respectively and sequentially arranged on the peripheries of the upper valve core 22 and the lower valve core 23 along the axial direction. The first switching hole site I of the upper valve core 22 is provided with a radial through hole t 132 communicated with an axial flow channel of the upper valve core 22, the second switching hole site II of the upper valve core 22 is provided with a radial through hole j 131 communicated with the axial flow channel of the upper valve core, the third switching hole site III of the upper valve core 22 is provided with a radial through hole f 130 communicated with the axial flow channel of the upper valve core, and the fourth switching hole site IV of the upper valve core 22 is provided with a radial through hole m 133, a radial through hole m 228 and a radial through hole m 329 communicated with the axial flow channel of the upper valve core 22. The first switching hole site I of the lower valve core 23 is provided with a radial through hole g 139, a radial through hole g 236 and a radial through hole g 335 which are communicated with an axial flow channel of the lower valve core 23, the second switching hole site II of the lower valve core 23 is provided with a radial through hole t 237 which is communicated with the axial flow channel of the lower valve core 23, the third switching hole site III of the lower valve core 23 is provided with a radial through hole j 241 which is communicated with the axial flow channel of the lower valve core 23, and the fourth switching hole site IV of the lower valve core 23 is provided with a radial through hole f 238 which is communicated with the axial flow channel of the lower valve core 23.
The front surface of the valve body 1 is provided with a radial hole flow passage Ta7 corresponding to the first switching hole site I of the upper valve core 22, a radial hole flow passage Ja8 corresponding to the second switching hole site II of the upper valve core 22, a radial hole flow passage Fa9 corresponding to the third switching hole site III of the upper valve core 22, a radial hole flow passage Tb13 corresponding to the second switching hole site II of the lower valve core 23, a radial hole flow passage Jb14 corresponding to the third switching hole site III of the lower valve core 23, and a radial hole flow passage Fb15 corresponding to the fourth switching hole site IV of the lower valve core 23. The front surface of the valve body 1 is provided with a groove-shaped flow channel Tc10 communicated with radial hole flow channels Ta and Tb, a groove-shaped flow channel Jc11 communicated with the radial hole flow channel Ja and the radial hole flow channel Jb, and a groove-shaped flow channel Fc12 communicated with the radial hole flow channel Fa and the radial hole flow channel Fb. And a radial hole flow passage M6 corresponding to the fourth switching hole position IV of the upper valve core 22 and a radial hole flow passage G5 corresponding to the first switching hole position I of the lower valve core 23 are arranged on the back surface of the valve body 1.
The back of the confluence cover plate 3 is provided with a groove-shaped flow channel Td21, the groove-shaped flow channel Td21 is buckled with the groove-shaped flow channel Tc10 to form a closed flow channel Te, the front of the confluence cover plate 3 is provided with an outer channel T17 communicated with the groove-shaped flow channel Td21, and the outer channel T17 corresponds to the radial hole flow channel Tb 13. The back of the confluence cover plate 3 is provided with a groove-shaped flow passage Jd20, the groove-shaped flow passage Jd20 is buckled with the groove-shaped flow passage Jc11 to form a closed flow passage Je, the front of the confluence cover plate 3 is provided with an outer passage J16 communicated with the groove-shaped flow passage Jd20, and the outer passage J16 corresponds to the radial hole flow passage Ja 8. The back of the confluence cover plate 3 is provided with a groove-shaped flow channel Fd19, the groove-shaped flow channel Fd19 is buckled with the groove-shaped flow channel Fc12 to form a closed flow channel Fe, the front of the confluence cover plate 3 is provided with an outer channel F18 communicated with the groove-shaped flow channel Fd19, and the outer channel F18 corresponds to the radial hole flow channel Fb 15.
In this embodiment, the number of the side seal cover plates 2 is four, each two side seal cover plates are a pair, two pairs of side seal cover plates 2 are respectively packaged at two ends of the upper and lower cylindrical cavities of the valve body 1, a bearing mounting hole 25 is formed in the center of each side seal cover plate 2, and a bearing for connecting the rotating shaft 4 is arranged in the bearing mounting hole 25. One of the rotating shafts 4 at two ends of the upper valve core 22 is a long rotating shaft I extending out of the side sealing cover plate 2, one of the rotating shafts 4 at two ends of the lower valve core 23 is a long rotating shaft II extending out of the side sealing cover plate 2, and the upper valve core 22 and the lower valve core 23 are driven to rotate by driving the long rotating shaft I and the long rotating shaft II to rotate. The edge at upper spool 22 and lower spool 23 both ends is equipped with the annular seal groove 24 that is used for nested rubber circle respectively, be equipped with the annular seal groove 24 that is used for nested rubber circle between two adjacent switching hole sites in first switching hole site I, second switching hole site II, third switching hole site III and the fourth switching hole site IV respectively, the rubber circle closely contacts with last cylindricality cavity 26 and lower cylindricality cavity 27 inner wall to play the effect of closed inner flow way.
The axial flow passage of the upper valve core 22 is a cylindrical cavity flow passage a34, the center lines of the radial through holes M1, M2 and M3 intersect with the central axis of the cylindrical cavity flow passage a34 at the same point, in the positive sand washing operation state, the radial through hole M133 corresponds to the radial hole flow passage M6 on the back surface of the valve body 1, and the radial through hole M228 and the radial through hole M329 respectively have a 100-degree difference with the radial through hole M133. The radial through hole f 130 of the upper spool 22 corresponds to the radial hole flow passage Fa9 of the valve body 1, the radial through hole j 131 of the upper spool 22 is not communicated with the radial hole flow passage Ja8 of the valve body 1, and the radial through hole t 132 of the upper spool 22 is not communicated with the radial hole flow passage Ta7 of the valve body 1. When the single-joint operation of positive sand washing is carried out, the radial through hole M329 corresponds to the radial hole flow passage M6 on the back surface of the valve body 1, the radial through hole f 130 is not communicated with the radial hole flow passage Fa9 of the valve body 1, the radial through hole j 131 corresponds to the radial hole flow passage Ja8 of the valve body 1, and the radial through hole t 132 is not communicated with the radial hole flow passage Ta7 of the valve body 1. In the back flushing operation state, the radial through hole M228 corresponds to the radial hole flow passage M6 on the back surface of the valve body 1, the radial through hole f 130 is not communicated with the radial hole flow passage Fa9 of the valve body 1, the radial through hole j 131 is not communicated with the radial hole flow passage Ja8 of the valve body 1, and the radial through hole t 132 corresponds to the radial hole flow passage Ta7 of the valve body 1. When single piece operation is carried out by back flushing, the radial through hole M228 corresponds to the radial hole flow passage M6 on the back surface of the valve body 1, the radial through hole f 130 is not communicated with the radial hole flow passage Fa9 of the valve body 1, the radial through hole j 131 is not communicated with the radial hole flow passage Ja8 of the valve body 1, and the radial through hole t 132 corresponds to the radial hole flow passage Ta7 of the valve body 1.
The axial flow passage of the lower valve core 23 is a cylindrical cavity flow passage B40, the center lines of the radial through hole G139, the radial through hole G236 and the radial through hole G335 are intersected with the central axis of the cylindrical cavity flow passage B40 at the same point, in the positive sand flushing operation state, the radial through hole G139 corresponds to the radial hole flow passage G5 on the back surface of the valve body 1, the radial through hole G236 and the radial through hole G139 are different by 100 degrees, the radial through hole G335 and the radial through hole G236 are different by 100 degrees, the radial through hole f 238 of the lower valve core 23 is not communicated with the radial hole flow passage Fb15 of the valve body 1, the radial through hole 241 j of the lower valve core 23 is not communicated with the radial hole flow passage Jb14 of the valve body 1, and the radial through hole t 237 of the lower valve core 23 corresponds to the radial hole flow passage Tb13 of the valve body 1. When the sand washing operation is carried out, the radial through hole G139 corresponds to the radial hole flow passage G5 on the back surface of the valve body 1, the radial through hole f 238 of the lower valve core 23 is not communicated with the radial hole flow passage Fb15 of the valve body 1, the radial through hole j 241 of the lower valve core 23 is not communicated with the radial hole flow passage Jb14 of the valve body 1, and the radial through hole t 237 of the lower valve core 23 corresponds to the radial hole flow passage Tb13 of the valve body 1. When the sand back flushing operation state is carried out, the radial through hole G236 corresponds to the radial hole flow passage G5 on the back surface of the valve body 1, the radial through hole f 238 of the lower valve core 23 corresponds to the radial hole flow passage Fb15 of the valve body 1, the radial through hole j 241 of the lower valve core 23 is not communicated with the radial hole flow passage Jb14 of the valve body 1, and the radial through hole t 237 of the lower valve core 23 is not communicated with the radial hole flow passage Tb13 of the valve body 1. When single piece operation of back flushing and sand changing is carried out, the radial through hole G335 corresponds to the radial hole flow passage G5 on the back surface of the valve body 1, the radial through hole f 238 of the lower valve core 23 is not communicated with the radial hole flow passage Fb15 of the valve body 1, the radial through hole j 241 of the lower valve core 23 corresponds to the radial hole flow passage Jb14 of the valve body 1, and the radial through hole t 237 of the lower valve core 23 is not communicated with the radial hole flow passage Tb13 of the valve body 1.
During the use, external equipment (pump) is connected to the radial hole runner M6 of valve body 1, and external equipment (pollution tank) is connected to radial hole runner G5, the external equipment (well head sleeve pipe) is connected to the outer passageway T17 of apron 3 that converges, and external equipment (self-sealing well head device) is connected to outer passageway J16, and external equipment (sand washing valve) is connected to outer passageway F18.
Firstly, a working process, namely positive sand washing operation.
Referring to fig. 18, the "positive sand wash valve position" is shown.
As shown in the first switching hole position I, a radial through hole M1 of the upper valve core is communicated with a radial hole flow passage M; as shown in a third switching hole position III, a radial through hole f1 of the upper valve core is communicated with a closed flow passage Fe; referring to fig. 16, the closed flow path Fe communicates with the outer passage F. The internal flow direction is then: the radial hole runner M → the radial through hole M1 → the cylindrical cavity runner A → the radial through hole F1 → the radial hole runner Fa → the closed runner Fe → the outer runner F;
as shown in the second switching hole site II, the radial through hole T2 of the lower valve core is communicated with the radial hole runner Tb, so as to be communicated with the outer channel T; as shown in the first switching hole site I, the radial through hole G1 of the lower valve core is communicated with the outer channel G. The internal flow direction is then: the outer passage T → the radial hole flow passage Tb → the radial through hole T2 → the cylindrical cavity flow passage B → the radial through hole G1 → the radial hole flow passage G.
In conclusion, the water flow direction of the 'positive sand washing' flow is as follows: external equipment (pump) → radial bore flow passage M → radial through hole M1 → cylindrical cavity flow passage a → radial through hole F1 → radial bore flow passage Fa → closed flow passage Fe → external passage F → external equipment (sand washing valve) → oil well pipe → oil well downhole → external equipment (wellhead casing) → external passage T → radial bore flow passage Tb → radial through hole T2 → cylindrical cavity flow passage B → radial through hole G1 → radial bore flow passage G → external equipment (contamination tank).
And secondly, working flow, namely, converting positive sand washing into back sand washing.
The operation is as follows: the positive sand washing valve position is an initial position, the upper valve core rotates 100 degrees anticlockwise, and the lower valve core rotates 100 degrees clockwise.
1. And the initial valve position is the same as the positive sand washing in the process 1. And will not be described in detail.
2. Intermediate transition state valve position. When the spool is rotated to the neutral state, see fig. 18.
The internal flow is abbreviated as follows: m → (M1 + M2) → a;
A→f1→Fa→Fe→F；
A→t1→Ta→Te→T。
T→Tb→t2→B；
F→Fb→f2→B；
B→（g1+g2）→G。
in summary, the flow direction of the intermediate state of the flow of "positive sand washing changes to reverse sand washing" has 3, which are respectively:
water flow direction 1: external equipment (pump) → M → (M1 + M2) → a → F1 → Fa → Fe → F → external equipment (sand washing valve) → oil well tubing → oil well downhole → external equipment (wellhead casing) → T → Tb → T2 → B → (G1 + G2) → G → external equipment (pollution tank), and the path resistance is large and the flow rate is small;
water flow direction 2: external equipment (pump) → M → (M1 + M2) → a → F1 → Fa → Fe → F → Fb → F2 → B → (G1 + G2) → G → external equipment (pollution tank), and this path resistance is small and the flow rate is large;
water flow direction 3: external equipment (pump) → M → (M1 + M2) → a → T1 → Ta → Te → T → Tb → T2 → B → (G1 + G2) → G → external equipment (pollution tank), and this path resistance is small and the flow rate is large.
The intermediate state is only about 1 second long, so that the influence on the downhole flow is negligible, and the main effect is that the pump cannot be suppressed, the pump does not need to be stopped, and the operation is continuous. After the intermediate state is quickly passed, the next sand washing state is immediately entered, and the downhole flow rate is immediately recovered to be large, so that the whole process is continuous and efficient.
3. And back flushing the sand valve position. See "backflush sand valve position" shown in fig. 18.
The internal flow direction is abbreviated as: m → M2 → A → T1 → T;
F→f2→B→g2→G。
in conclusion, the water flow direction of the "back flushing" flow is as follows: external equipment (pump) → M2 → a → T1 → T → external equipment (wellhead casing) → oil well downhole → oil well tubing → external equipment (sand washing valve) → F2 → B → G2 → G → external equipment (contamination tank).
And thirdly, working flow, namely converting back flushing sand into positive flushing sand.
And the operation of the second workflow is reciprocal. The water flow direction of the working process III is consistent with the water flow direction of the corresponding valve position of the working process II.
And fourthly, working flow, and changing single operation by positive sand washing.
The operation is as follows: the positive sand washing valve position is an initial position, the upper valve core rotates clockwise by 100 degrees, and the lower valve core keeps still.
1. And the initial valve position is the same as the positive sand washing in the process 1. And will not be described in detail.
2. Intermediate transition state valve position. When the spool is rotated to the neutral state, as shown in the "transition position" of fig. 19.
The internal flow direction is abbreviated as: m → (M1 + M3) → a;
A→f1→Fa→Fe→F；
A→j1→Ja→J。
T→Tb→t2→B；
B→g1→G。
in summary, the intermediate state of the flow of "changing single piece by positive sand washing" has 2 water flow directions, which are respectively:
water flow direction 1: external equipment (pump) → M → (M1 + M3) → a → F1 → Fa → Fe → F → external equipment (sand washing valve) → oil well tubing → oil well downhole → external equipment (wellhead casing) → T → Tb → T2 → B → G1 → G → external equipment (contamination tank);
water flow direction 2: external equipment (pump) → M → (M1 + M3) → a → J1 → Ja → J → external equipment (self-sealing wellhead) → oil well tubing → oil well downhole → external equipment (wellhead casing) → T → Tb → T2 → B → G1 → G → external equipment (pollution tank);
3. and changing a single valve position by positive sand washing. See fig. 19 for "positive sand wash single change valve position".
The internal flow direction is abbreviated as: m → M3 → A;
A→j1→Ja→J。
T→Tb→t2→B；
B→g1→G。
in summary, the water flow direction of the flow of "changing single by positive sand washing" is abbreviated as:
external equipment (pump) → M3 → a → J1 → Ja → J → external equipment (self-sealing wellhead) → oil well tubing → oil well downhole → external equipment (wellhead casing) → T → Tb → T2 → B → G1 → G → external equipment (contamination tank).
And fifthly, working flow, changing single piece for positive sand washing, and returning to positive sand washing.
The operation of the workflow is reciprocal to that of the workflow four. The water flow direction of the working process five is consistent with the water flow direction of the corresponding valve position of the working process four.
And sixthly, working process, back sand washing and single-joint changing operation.
The operation is as follows: the sand backwashing valve is an initial position, the upper valve core is kept still, and the lower valve core rotates 100 degrees clockwise.
1. And the initial valve position is the same as the back sand flushing valve position of the second working process. And will not be described in detail.
2. Intermediate transition state valve position. When the lower valve core is rotated to the middle state, as shown in the transition valve position of fig. 20.
The internal flow direction is abbreviated as: m → M2 → A;
A→t1→Ta→Te→T；
F→Fb→f2→B；
J→Je→Jb→j2→B；
B→（g2+g3）→G。
in summary, the intermediate state of the flow of "back flushing sand changes single" has 2 water flow directions, which are respectively:
water flow direction 1: external equipment (pump) → M2 → a → T1 → Ta → Te → T → external equipment (wellhead casing) → oil well downhole → oil well tubing → external equipment (sand washing valve) → F → Fb → F2 → B → (G2 + G3) → G → external equipment (pollution tank);
water flow direction 2: external equipment (pump) → M2 → a → T1 → Ta → Te → T → external equipment (well head casing) → oil well downhole → oil well tubing → external equipment (self-sealing wellhead) → J → Je → Jb → J2 → B → (G2 + G3) → G → external equipment (contamination tank).
3. And back flushing sand to change a single valve position. As shown in fig. 20 "back flushing single valve position change".
The internal flow direction is abbreviated as: m → M2 → A;
A→t1→Ta→Te→T；
J→Je→Jb→j2→B；
B→g3→G。
in conclusion, the water flow direction of the flow of 'back flushing sand and single change' is as follows:
external equipment (pump) → M2 → a → T1 → Ta → Te → T → external equipment (wellhead casing) → oil well downhole → oil well tubing → external equipment (self-sealing wellhead) → J → Je → Jb → J2 → B → G3 → G → external equipment (pollution tank).
And seventhly, performing the work flow, namely replacing single sand by back flushing, and returning back to the back flushing.
The operation is reciprocal to that of the work flow six. The water flow direction of the work flow seven is consistent with the water flow direction of the corresponding valve position of the work flow six.
Compared with the prior art, the sand washing safety performance is greatly improved; the sand washing speed is increased to three times of the traditional sand washing speed, the size is small, and the operation is convenient.
The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the utility model are also within the scope of the present patent.
Claims (6)
1. The utility model provides a positive and negative sand washing switching-over valve of quadbit five-way of axial in-line case, includes the valve body, locates the positive apron that converges of valve body, locates the side seal apron of valve body side, its characterized in that: an upper cylindrical cavity and a lower cylindrical cavity which are distributed at intervals and are parallel to each other are arranged in the valve body, a columnar upper valve core is arranged in the upper cylindrical cavity, a columnar lower valve core is arranged in the lower cylindrical cavity, and rotating shafts supported on the side sealing cover plate of the valve body are respectively arranged at two ends of the upper valve core and the lower valve core; axial flow channels are respectively arranged in the upper valve core and the lower valve core, a first switching hole site I, a second switching hole site II, a third switching hole site III and a fourth switching hole site IV are respectively and sequentially arranged on the peripheries of the upper valve core and the lower valve core along the axial direction, a radial through hole t1 communicated with the axial flow channels is arranged at the first switching hole site I of the upper valve core, a radial through hole j1 communicated with the axial flow channels is arranged at the second switching hole site II of the upper valve core, a radial through hole f1 communicated with the axial flow channels is arranged at the third switching hole site III of the upper valve core, and radial through holes m1, m2 and m3 communicated with the axial flow channels are arranged at the fourth switching hole site IV of the upper valve core; the first switching hole site I of the lower valve core is provided with radial through holes g1, g2 and g3 communicated with an axial flow channel of the first switching hole site I, the second switching hole site II of the lower valve core is provided with a radial through hole t2 communicated with the axial flow channel of the second switching hole site II, the third switching hole site III of the lower valve core is provided with a radial through hole j2 communicated with the axial flow channel of the third switching hole site III, and the fourth switching hole site IV of the lower valve core is provided with a radial through hole f2 communicated with the axial flow channel of the fourth switching hole site IV of the lower valve core;
the front surface of the valve body is provided with a radial hole flow passage Ta corresponding to a first switching hole position I of the upper valve core, a radial hole flow passage Ja corresponding to a second switching hole position II of the upper valve core, a radial hole flow passage Fa corresponding to a third switching hole position III of the upper valve core, a radial hole flow passage Tb corresponding to a second switching hole position II of the lower valve core, a radial hole flow passage Jb corresponding to a third switching hole position III of the lower valve core and a radial hole flow passage Fb corresponding to a fourth switching hole position IV of the lower valve core, and the front surface of the valve body is provided with a groove-shaped flow passage Tc communicated with the radial hole flow passages Ta and Tb, a groove-shaped flow passage Jc communicated with the radial hole flow passages Ja and Jb and a groove-shaped flow passage Fc communicated with the radial hole flow passages Fa and Fb; a radial hole flow channel M corresponding to the fourth switching hole position IV of the upper valve core and a radial hole flow channel G corresponding to the first switching hole position I of the lower valve core are arranged on the back of the valve body;
the back of the confluence cover plate is provided with a groove-shaped flow channel Td, the groove-shaped flow channel Td is buckled with the groove-shaped flow channel Tc to form a closed flow channel Te, the front of the confluence cover plate is provided with an outer channel T communicated with the groove-shaped flow channel Td, the outer channel T corresponds to the radial hole flow channel Tb, the back of the confluence cover plate is provided with a groove-shaped flow channel Jd, the groove-shaped flow channel Jd is buckled with the groove-shaped flow channel Jc to form a closed flow channel Je, the front of the confluence cover plate is provided with an outer channel J communicated with the groove-shaped flow channel Jd, the outer channel J corresponds to the radial hole flow channel Ja, the back of the confluence cover plate is provided with a groove-shaped flow channel Fd, the groove-shaped flow channel Fd is buckled with the groove-shaped flow channel Fc to form a closed flow channel Fe, the front of the confluence cover plate is provided with an outer channel F communicated with the groove-shaped flow channel Fd, and the outer channel F corresponds to the radial hole flow channel Fb.
2. The four-position, five-way, positive and negative sand-flushing reversing valve of an axial in-line spool of claim 1, wherein: the side seal cover plate is characterized in that the number of the side seal cover plates is four, every two side seal cover plates are a pair, two pairs of side seal cover plates are respectively packaged at two ends of the upper cylindrical cavity and the lower cylindrical cavity of the valve body, a bearing mounting hole is formed in the center of each side seal cover plate, and a bearing used for being connected with the rotating shaft is arranged in each bearing mounting hole.
3. The four-position, five-way, positive and negative sand-flushing reversing valve of an axial in-line spool of claim 1, wherein: one of the rotating shafts at the two ends of the upper valve core is a long rotating shaft I extending out of the side sealing cover plate, one of the rotating shafts at the two ends of the lower valve core is a long rotating shaft II extending out of the side sealing cover plate, and the upper valve core and the lower valve core are driven to rotate by driving the long rotating shaft I and the long rotating shaft II to rotate.
4. The four-position, five-way, positive and negative sand-flushing reversing valve of an axial in-line spool of claim 1, wherein: the edge at upper valve core and lower valve core both ends is equipped with the annular seal groove that is used for nested rubber circle respectively, be equipped with the annular seal groove that is used for nested rubber circle between two adjacent switching hole sites in first switching hole site I, second switching hole site II, third switching hole site III and the fourth switching hole site IV respectively, the rubber circle closely contacts with upper cylindrical cavity and lower cylindrical cavity inner wall to play the effect of sealing the internal flow way.
5. The four-position, five-way, positive and negative sand-flushing reversing valve of an axial in-line spool of claim 1, wherein: the axial flow passage of the upper valve core is a cylindrical cavity flow passage A, the central lines of the radial through holes M1, M2 and M3 are intersected with the central axis of the cylindrical cavity flow passage A at the same point, in the positive sand flushing operation state, the radial through hole M1 corresponds to the radial hole flow passage M on the back of the valve body, and the radial through hole M2 and the radial through hole M3 respectively have a 100-degree difference with the radial through hole M1; the radial through hole f1 of the upper valve core corresponds to the radial hole flow passage Fa of the valve body, the radial through hole j1 of the upper valve core is not communicated with the radial hole flow passage Ja of the valve body, and the radial through hole t1 of the upper valve core is not communicated with the radial hole flow passage Ta of the valve body; when the single piece operation is changed by positive sand washing, the radial through hole M3 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 corresponds to the radial hole runner Ja of the valve body, and the radial through hole t1 is not communicated with the radial hole runner Ta of the valve body; when the sand backwashing operation state is carried out, the radial through hole M2 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 is not communicated with the radial hole runner Ja of the valve body, and the radial through hole t1 corresponds to the radial hole runner Ta of the valve body; when single piece operation is carried out by back flushing, the radial through hole M2 corresponds to the radial hole runner M on the back of the valve body, the radial through hole f1 is not communicated with the radial hole runner Fa of the valve body, the radial through hole j1 is not communicated with the radial hole runner Ja of the valve body, and the radial through hole t1 corresponds to the radial hole runner Ta of the valve body.
6. The four-position, five-way, positive-negative sand-flushing reversing valve of an axial in-line spool according to claim 1 or 5, characterized in that: the axial flow passage of the lower valve core is a cylindrical cavity flow passage B, the central lines of the radial through holes G1, G2 and G3 are intersected with the central axis of the cylindrical cavity flow passage B at the same point, in the positive sand blasting operation state, the radial through hole G1 corresponds to the radial hole flow passage G on the back surface of the valve body, the radial through hole G2 is 100 degrees different from the radial through hole G1, the radial through hole G3 is 100 degrees different from the radial through hole G2, the radial through hole f2 of the lower valve core is not communicated with the radial hole flow passage Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole flow passage Jb of the valve body, and the radial through hole t2 of the lower valve core corresponds to the radial hole flow passage Tb of the valve body; when the single-joint operation of positive sand washing is carried out, the radial through hole G1 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core is not communicated with the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core corresponds to the radial hole runner Tb of the valve body; when the sand backwashing operation is carried out, the radial through hole G2 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core corresponds to the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core is not communicated with the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core is not communicated with the radial hole runner Tb of the valve body; when single piece operation is carried out by back flushing, the radial through hole G3 corresponds to the radial hole runner G on the back of the valve body, the radial through hole f2 of the lower valve core is not communicated with the radial hole runner Fb of the valve body, the radial through hole j2 of the lower valve core corresponds to the radial hole runner Jb of the valve body, and the radial through hole t2 of the lower valve core is not communicated with the radial hole runner Tb of the valve body.
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| CN202122555168.7U CN216197993U (en) | 2021-10-23 | 2021-10-23 | Four-position five-way positive and negative sand washing reversing valve with axial in-line valve core |
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| CN202122555168.7U CN216197993U (en) | 2021-10-23 | 2021-10-23 | Four-position five-way positive and negative sand washing reversing valve with axial in-line valve core |
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| CN202122555168.7U Active CN216197993U (en) | 2021-10-23 | 2021-10-23 | Four-position five-way positive and negative sand washing reversing valve with axial in-line valve core |
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2021
- 2021-10-23 CN CN202122555168.7U patent/CN216197993U/en active Active
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Denomination of utility model: A four position five way forward and backward sand flushing directional valve with axial inline valve core Effective date of registration: 20230926 Granted publication date: 20220405 Pledgee: Panjin financing guarantee Group Co.,Ltd. Pledgor: Liaoning Jinxing Petroleum Group Co.,Ltd. Registration number: Y2023980059357 |
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