CN108518208B - Layered oil production device with ground program control function - Google Patents
Layered oil production device with ground program control function Download PDFInfo
- Publication number
- CN108518208B CN108518208B CN201810232605.1A CN201810232605A CN108518208B CN 108518208 B CN108518208 B CN 108518208B CN 201810232605 A CN201810232605 A CN 201810232605A CN 108518208 B CN108518208 B CN 108518208B
- Authority
- CN
- China
- Prior art keywords
- oil
- pressure
- hydraulic switch
- joint
- pipe
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0092—Methods relating to program engineering, design or optimisation
Abstract
The invention discloses a program ground-controllable layered oil production device, which comprises a first packer and a second packer, wherein the upper section of the first packer is a liquid production part, the lower section of the first packer is a liquid supply part, the liquid production part comprises an oil well pump and a well flushing valve body, a pump tail pipe is arranged outside the oil well pump, the inner side of the well flushing valve body is sequentially provided with a well flushing valve upper joint, a second check valve, a first check valve, a well flushing liquid inlet hole, a ball seat and an oil drainage sleeve from top to bottom, a sealing steel ball is arranged in the ball seat, and a reset spring is arranged between the ball seat and the well flushing valve lower joint; the liquid supply part comprises a first sub-production pipe column, a sand loosening type safety joint, a second packer, a second sub-production pipe column, a connecting short section, an oil drain, a tail pipe and a blind plug, wherein the first sub-production pipe column is sequentially provided with a first hydraulic switch, a first sand filtering pipe and a first balance valve from top to bottom, and the second sub-production pipe column is sequentially provided with a second hydraulic switch, a second sand filtering pipe and a second balance valve from top to bottom.
Description
Technical Field
The invention relates to an oil exploitation device, in particular to a layered oil exploitation device with a ground-adjustable program.
Background
In oil field production, multiple layers are a common phenomenon, the oil-water content of liquid and the geothermal energy condition of stratum are different in multiple layers, and the layered oil production technology (fine management of oil layers) is an ideal method for improving benefit. Among the various layering techniques, a layered oil production device (patent No. 201310471568.7) is an ideal scheme, which overcomes the short life of electricity (caused by well conditions and large power consumption) and the complexity of hydraulic pipelines, and indeed achieves simple structure, convenient operation and good economic benefit in use, but the process has some problems due to the limitation of conditions.
The first is that when the stratum energy phase difference is too large, the original pipe column has no signal switch to limit the pressure, so that part of wells have the stratum which can not be changed. Secondly, because the pipe column is unidirectional, the original reversing is to press the rail pin to the reversing position, and the actual reversing is naturally generated after the oil well is produced, so that the reversing operation is difficult because continuous pressing and reversing can not be performed once in use. Thirdly, in actual production, the pressing procedure is unclear due to human factors, and therefore, the hydraulic switch is improved, and the purpose that the procedure can be regulated and controlled on the ground is achieved. Fourthly, when the original pipe column is subjected to separate prevention and separate production, the original tool has the phenomenon of overhaul due to overlarge friction resistance of sand, and accordingly, the sand loosening type safety joint is added to avoid overhaul. Fifthly, because the original pipe column is one-way, liquid in the pipe column cannot be leaked out during well repair, which causes difficulty in operation and damage to the environment. And sixthly, because the stratified oil production is unidirectional, the pressing can influence the procedure, namely, the well washing is limited, and therefore, the well washing valve is added to reduce the well washing difficulty.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the layered oil production device with the program capable of being regulated and controlled on the ground, the layered oil production can be completed by one string, and the reversing construction can be carried out for multiple times by one operation, so that the working procedures are greatly saved, the labor intensity and the operation cost are reduced, and the construction period is shortened; when repairing the well, the well can be fished out at one time, and the effect of no adverse effect on the environment and personnel is achieved.
The technical scheme is as follows: a procedure can be regulated and controlled in the floor to separate the oil production device, this separate layer oil production device is put into the oil well casing, including oil well casing, first packer and second packer, the upper section of the first packer is a liquid part, the inferior segment of the first packer is a liquid part, the liquid part includes oil-well pump and well-flushing valve body, there are pump tail pipes outside the oil-well pump, there are upper joints of well-flushing valves, second check valves, first check valves, well-flushing liquid inlet hole, ball seat, oil drain set sequentially from top to bottom in the inboard of the well-flushing valve body, the inboard connection of the oil drain set has lower joints of well-flushing valves, the lower end of the pump tail pipe is connected with upper joint of well-flushing valve, the lower joint of well-flushing valve is connected with oil well casing through the self-sealing device, there are sealed steel balls in the ball seat, there are reset springs between lower joint of ball seat and; the liquid supply part comprises a first sub-production pipe column, a sand loosening type safety joint, a second packer, a second sub-production pipe column, a connecting short section, an oil drainer, a tail pipe and a blind plug, wherein the first sub-production pipe column is sequentially provided with a first hydraulic switch, a first sand filtering pipe and a first balance valve from top to bottom, the second sub-production pipe column is sequentially provided with a second hydraulic switch, a second sand filtering pipe and a second balance valve from top to bottom, wherein the first sub-production pipe column forms a first layer liquid supply system, and the second sub-production pipe column forms a second layer liquid supply system: and a plurality of layer liquid supply systems are arranged according to the number of oil layers, so that the respective exploitation of the layers of the oil layers is realized.
Preferably, the sand loosening type safety joint is sequentially provided with a sand loosening type safety joint upper joint, a safety shear pin, a shear ring, a first sealing piston and a sand loosening type safety joint lower joint from top to bottom, wherein the sand loosening type safety joint lower joint is connected with the second packer, and the sand loosening type safety joint upper joint is connected with an oil pipe below the first sub-production pipe column.
Preferably, the first hydraulic switch and the second hydraulic switch have the same structure, the second hydraulic switch comprises a hydraulic switch upper joint, a locking pin, a second sealing piston, a hydraulic switch central pipe, a reversing assembly, a first pressure recovery spring, a sealing cylinder sleeve and a hydraulic switch lower joint, the upper ends of the hydraulic switch central pipe and the sealing cylinder sleeve are connected with the hydraulic switch upper joint, the hydraulic switch upper joint is connected with an upper pipe column, the lower ends of the hydraulic switch central pipe and the sealing cylinder sleeve are connected with the hydraulic switch lower joint, a liquid passing hole is formed in the hydraulic switch lower joint, the hydraulic switch lower joint is connected with a lower pipe column, a liquid inlet hole is formed in the upper portion of the hydraulic switch central pipe, liquid compresses the reversing assembly between the hydraulic switch central pipe and the sealing cylinder sleeve through the liquid inlet hole of the hydraulic switch central pipe, and the reversing assembly comprises the second sealing piston, the pressure opening spring, the hydraulic switch comprises a one-way valve, a single-flow slideway body, a return-to-zero spring, a spring seat, a single-flow slideway body bearing sleeve, a rail pin, a rotating ring and a rotating ring pressing cap, wherein the rotating ring is arranged in the rotating ring pressing cap, the rail pin is arranged on the rotating ring, a rail with the milling depth of 2-3mm is arranged on the outer wall of a central tube of the hydraulic switch, liquid passes through a second sealing piston and the one-way valve to apply pressure on the single-flow slideway body, the single-flow slideway body bearing sleeve and the rotating ring pressing cap, and the rotation reversing and return-to-zero procedure of the rotating ring is completed by the movement of the rail pin in the.
Preferably, the connection structure of the first sand screen and the second sand screen is the same, and the upper end and the lower end of the second sand screen are connected with the pipe column through pipe threads by the opening baffle ring and the connecting sleeve.
Preferably, the first balance valve and the second balance valve have the same structure, the second balance valve comprises a second balance valve body, the second balance valve body is provided with a second balance valve upper joint, an energy storage piston, a pressure relief piston, a power piston, a pressure relief spring, a power spring, a pressure raising piston, a pressure raising spring, a pressure adjusting bolt, a second balance valve lower joint and a linkage plate, the second balance valve lower joint is connected with the upper part of the connection short section, and the second balance valve upper joint is connected with the connection sleeve and the central oil pipe. A second signal switch is arranged at the position of a liquid discharge hole of the second balance valve, the second signal switch comprises a signal switch body, a welding seam, a pressure limiting piston, a sealing pressure regulating ball seat, a steel ball, a constant pressure spring and a sealing rubber ring are arranged in the signal switch body, and the upper end and the lower end of the signal switch body are provided with thread screw threads which are directly connected with the outside and are respectively connected with an upper pipe column and a lower pipe column through the thread screw threads; the opening pressure of the pressure limiting piston is limited within a design range through potential energy stored in the constant pressure spring, due design pressure is obtained through adjustment of the pressure adjusting bolt, finally, the integrated design of the second signal switch is completed through welding, and the first signal switch and the second signal switch are identical in structure.
Preferably, the oil drainer comprises an oil drainer body, a tail pipe and a blind plug, wherein an oil draining ball seat and a second pressure recovery spring are sequentially arranged on the inner side of the oil drainer body from top to bottom, the upper part of the oil drainer body is connected with the lower part of the connecting short section, the lower part of the oil drainer body is connected with the upper part of the tail pipe, and the blind plug is arranged on the lower part of the tail pipe.
Preferably, the rails include an upper rail, a middle rail, and a lower rail, wherein a top dead center of the upper rail is composed of a shorter opening point and a longer closing point interval; the tail end point of the middle rail is formed by the interval of the reversing points with the same length, the lower rail is only provided with a bottom dead center, the bottom dead center is communicated with all the reversing points through the rails, and the bottom dead center is a program return-to-zero position.
Compared with the prior art, the invention has the following advantages:
(1) the construction of one-time pump stopping and multiple reversing of the layered oil extraction can be completed by one string, so that the operation of the program is greatly facilitated, the working procedures are saved, the labor intensity and the operation cost are reduced, and the construction period is shortened;
(2) due to the zero-setting design, the number of layers can be increased, the procedure is simplified, the adaptability of the process is greatly improved, the loss caused by manual misoperation is reduced, and the universality of the process is enhanced;
(3) because of the use of the signal switch, the 'reversing' and 'zeroing' of the process have a fixed value which is a design value, so the oil production string has simple structure and strong operability and is easy to popularize on site;
(4) the oil drainer is designed, so that the process is safer and more environment-friendly when the well is repaired;
(5) the sand loosening type safety joint is used, so that the process is safer and more reliable;
(6) the use of the well washing valve widens the well washing limit, so that the popularization of the process is greatly expanded;
(7) because the tubular column has a simple structure, namely is simply connected in series and has a public channel, the tubular column has an expanded space, acidification can be directly connected if needed, and meanwhile, a detector can be connected in series or can be put in the tubular column for detection, and then the layered oil recovery can be used for more accurately knowing the current situation of the bottom layer through simple operation, so that a foundation is laid for later 'production allocation'.
Drawings
FIG. 1 is a schematic diagram of the construction of the well-flushing valve of the present invention;
FIG. 2 is a schematic illustration of the construction of a first production string and a loose sand safety joint of the present invention;
FIG. 3 is a schematic diagram of a second hydraulic switch according to the present invention;
FIG. 4 is a schematic of the construction of a second sand screen and second counter balance valve of the present invention;
FIG. 5 is a schematic view of the overall construction of the present invention and the construction of the oil drain;
FIG. 6 is a schematic view of the structure of the track of the present invention;
fig. 7 is a schematic structural diagram of a second signal switch according to the present invention.
Detailed Description
Example 1: with reference to fig. 1-7, the whole set of pipe columns is connected in series from top to bottom in fig. 1-4, and the lower part of the connection nipple 53 in fig. 4 and 5 is connected in series, and the present invention is further described by taking the layer position of an oil layer as an example of two layers:
a procedure can be regulated and controlled in the stratified oil production device on the ground, the apparatus is put into the oil well casing 3, including first packer 1 and second packer 2, the upper section of the first packer 1 is a liquid production part, the lower section of the first packer 1 is a liquid supply part, the liquid production part includes the oil-well pump 5 and washes the valve body 11, there are pump tail pipes 4 outside the oil-well pump 5, wash the valve body 11 inside from last to have wash the valve upper connector 6, second check valve 55, first check valve 8, wash the well liquid inlet hole 14, ball seat 10, drain bush 13 sequentially from top to bottom, discharge the inner side of the bush 13 and connect and have wash the valve lower connector 7, the lower end of the pump tail pipe 4 connects with wash the valve upper connector 6, wash the valve lower connector 7 and connect with the oil well casing 3 through the self-sealing device, there are sealed steel balls 9 in the ball seat 10, there are reset springs 12 between ball seat 10 and wash the valve lower connector 7; the liquid supply part comprises a first sub-production pipe column 16, a sand-loosening type safety joint 54, a second packer 2, a second sub-production pipe column, a connecting short section 53, an oil drainer, a tail pipe 60 and a blind plug 61, wherein the first sub-production pipe column 16 is sequentially provided with a first hydraulic switch, a first sand filtering pipe and a first balance valve from top to bottom, the second sub-production pipe column is sequentially provided with a second hydraulic switch, a second sand filtering pipe 38 and a second balance valve from top to bottom, wherein the first sub-production pipe column 16 forms a first level liquid supply system, and the second sub-production pipe column forms a second level liquid supply system: a plurality of horizon liquid supply systems are arranged according to the number of oil reservoirs, so that the horizons of the oil reservoirs are exploited respectively; when the oil pumping process is carried out, the oil pumping is not influenced because the sealing steel ball 9 is provided with the one-way valve; when a well washing procedure is required, the oil production string and the lower oil supply string are separated by self-sealing, well washing liquid is injected into the annular area of the casing at the well mouth for pressurizing, the well washing liquid enters the space of the tail pipe of the pump through the well washing liquid inlet hole 14 and the first check valve 8, and then the well washing liquid enters the oil well pump 5 for washing out pollutants; when the reversing operation is needed, the ball seat 10 moves downwards due to the large liquid pressure, so that the reversing channel is opened, and the reversing operation is smoothly carried out; when the pump is required to be repaired, the pipe column is rotated to enable the lower connector 7 of the well washing valve to move downwards, so that the oil drainage channel is opened and the environment is not polluted.
The sand loosening type safety joint 54 is sequentially provided with a sand loosening type safety joint upper joint 17, a safety shear pin 19, a shear ring 20, a first sealing piston 21 and a sand loosening type safety joint lower joint 18 from top to bottom, wherein the sand loosening type safety joint lower joint 18 is connected with the second packer 2, and the sand loosening type safety joint upper joint 17 is connected with an oil pipe below the first production string 16; when well repair operation is needed, the upper connecting pipe column of the sand loosening type safety joint 54 can cut off the safety shear pin 19, the whole set of pipe column is designed in a grading mode, therefore, one-time fishing can be achieved in general, when the resistance of a low layer is too large, the pipe column can be impacted up and down to enable sand to flow into the pipe column as much as possible due to the fact that a certain impact distance is designed, therefore, the pipe can be taken out smoothly, when the resistance is larger, the pipe column can be rotated forward, the upper portion of the pipe column can be taken out, and a complete effect is achieved really.
The first hydraulic switch and the second hydraulic switch are identical in structure, the second hydraulic switch comprises a hydraulic switch upper connector 22, a locking pin 23, a second sealing piston 24, a hydraulic switch central pipe 27, a reversing assembly, a first pressure recovery spring 35, a sealing cylinder sleeve 36 and a hydraulic switch lower connector 37, the upper ends of the hydraulic switch central pipe 27 and the sealing cylinder sleeve 36 are connected with the hydraulic switch upper connector 22, the hydraulic switch upper connector 22 is connected with an upper tubular column, the lower ends of the hydraulic switch central pipe 27 and the sealing cylinder sleeve 36 are connected with the hydraulic switch lower connector 37, a liquid passing hole is formed in the hydraulic switch lower connector 37, the hydraulic switch lower connector 37 is connected with a lower tubular column, a liquid inlet hole is formed in the upper portion of the hydraulic switch central pipe 27, liquid compresses the reversing assembly between the hydraulic switch central pipe 27 and the sealing cylinder sleeve 36 through the liquid inlet hole of the hydraulic switch central pipe 27, and the reversing assembly comprises a second sealing piston 24, The hydraulic switch comprises a pressure opening spring 25, a one-way valve 26, a single-flow slideway body 30, a return-to-zero spring 28, a spring seat 29, a single-flow slideway body bearing sleeve 31, a track pin 33, a rotating ring 32 and a rotating ring pressing cap 34, wherein a rotating ring 32 is arranged in the rotating ring pressing cap 34, the track pin 33 is arranged on the rotating ring 32, a track c with the milling depth of 2-3mm is arranged on the outer wall of a central tube 27 of the hydraulic switch, liquid applies pressure to the single-flow slideway body 30, the single-flow slideway body bearing sleeve 31 and the rotating ring pressing cap 34 through a second sealing piston 24 and the one-way valve 26, and the rotary reversing and return-to-zero procedures of the rotating ring 32 are completed through the movement of the track pin 33 in the track c.
The connection structure of the first sand screen and the second sand screen 38 is the same, and the upper end and the lower end of the second sand screen 38 are connected with the pipe column through pipe threads by an opening baffle ring 39 and a connecting sleeve 40; the sand screen pipe is only used in the pipe column needing sand control.
The first balance valve and the second balance valve have the same structure, the second balance valve comprises a second balance valve body 46, a second balance valve upper joint, an energy storage piston 48, a pressure relief piston 50, a power piston 49, a pressure relief spring 47, a power spring 45, a pressure starting piston 44, a pressure starting spring 42, a pressure adjusting bolt 41, a second balance valve lower joint 52 and a linkage sheet 51 are arranged on the second balance valve body 46, the second balance valve lower joint 52 is connected with the upper part of a connecting short section 53, and the second balance valve upper joint is connected with a connecting sleeve 40 and a central oil pipe; the characteristics of balanced valve do not let out the pressure when positive is suppressed, make the pressure of whole tubular column obtain the balance when stopping suppressing, and its theory of operation is: by utilizing the balance principle, the pressure adjusting bolt 41 is used for adjusting, the pressure-generating spring 42 is compressed, the pressure-generating spring 42 acts on the pressure-generating piston 44, so that the pressure-generating piston 44 obtains the initial pressure-generating force of the balance valve, when the forward pressure is generated for reversing (including the return-to-zero process), due to the action of the pressure-generating piston 44 and the combined action of the external pressure and the energy-storing piston 48 and the power piston 49, the linkage sheet 51 drives the energy-storing piston 48 (compressing the pressure-releasing spring 47), the power piston 49 (compressing the power spring 45) and the pressure-releasing piston 50 to move downwards, and the whole design of the pressure-generating piston conforms to the Bernoulli equation, so that the closing effect of the pressure-releasing spring 47 is achieved, and the reversing work; when the pressure is released, the linkage sheet 51 moves upwards under the action of the pressure release spring 47 and the power spring 45, so that the pressure release spring 47 is driven to be opened, after the pressure release spring 47 is opened, the liquid level in the pipe column is lowered under the action of the pressure spring 42 until the pressure is balanced, and at the moment, the hydraulic switch completes the reversing. A second signal switch is arranged at the position of a liquid discharge hole of the second balance valve, the second signal switch comprises a signal switch body 43, a welding seam 62, a pressure limiting piston 15, a sealing pressure regulating ball seat 63, a steel ball 64, a constant pressure spring 65 and a sealing rubber ring 66 are arranged in the second signal switch, and the upper end and the lower end of the signal switch body 43 are provided with thread screw threads which are directly and externally connected and are respectively connected with an upper pipe column and a lower pipe column through the screw threads; the opening pressure of the pressure limiting piston 15 is limited within a design range through potential energy stored by the constant pressure spring 65, due design pressure is obtained through adjustment of the pressure adjusting bolt 41, finally, the integrated design of the second signal switch is completed through welding, the second signal switch can be used for logging in after being qualified through inspection, wherein inspection items comprise the outer diameter and the length of a tool, connecting threads at two ends, directional opening pressure, integral pressure bearing and permeability of a liquid passing hole.
The oil drain comprises an oil drain body 59, a tail pipe 60 and a blind plug 61, wherein an oil drain ball seat 57 and a second pressure recovery spring 58 are sequentially arranged on the inner side of the oil drain body 59 from top to bottom, the upper part of the oil drain body 59 is connected with the lower part of a connecting short section 53, the lower part of the oil drain body 59 is connected with the upper part of the tail pipe 60, and the blind plug 61 is arranged on the lower part of the tail pipe 60. the oil drain is characterized in that when a steel ball is not thrown to the oil drain ball seat 57, the pressure is not released, and even if a safety shear pin connecting the oil drain ball seat 57 and the oil drain body 59 is cut off due to a certain reason, the oil drain ball seat 57 can automatically recover to a working state due to the action of the; when the well repairing operation is carried out, when the layered oil production pipe column is used as a well head, a proper steel ball is thrown into the pipe column, the oil drainage ball seat 57 descends, and the pipe column is decompressed through a liquid passing hole in the oil drainer body 59.
The track c comprises an upper track d, a middle track e and a lower track g, wherein the upper dead point of the upper track d is formed by a shorter opening point b and a longer closing point a at intervals; the tail end point of the middle track e is formed by the interval of the reversing points f with the same length, the lower track g only has one bottom dead center h, the bottom dead center h is communicated with all the reversing points f through the tracks, and the bottom dead center h is the program zero position.
When the whole set of pipe column needs to be reversed or reset to zero, the pipe column is pressed into the outer pipe, and the reversing or resetting operation is completed through the opening and closing of the hydraulic switches at all the layers and the cooperation of the balance valve and the signal switch; the program is designed before the well is lowered, so that the direction is changed once the pressure is pressed once, and the opening and closing of a certain layer are corresponded; when reversing, the pressing pressure is just good, so that the rail pin 33 enters the reversing point f of the middle rail e from the upper rail d, the pressure is released after reversing is completed, and the return-to-zero spring 28 does not deform during reversing operation; when the zero-returning operation is carried out, the pressing pressure is higher than the pressure during reversing, when the pressing pressure reaches a certain value, the zero-returning spring 28 is compressed, so that the rail pin 33 just starts from the upper rail d, passes through the middle rail e and finally reaches the bottom dead center h of the lower rail g, the whole process returns to the initial position, and then the pressure can be relieved; it should be noted that a certain value must be reached at one time during the pressing process, and the pressure cannot be released in the middle process.
In example 1, the oil layer level is taken as two layers, when the oil layer level is higher than the two layers, the technical structure of each layer is the same as that of the first layer, and the operation process is analogized.
Claims (7)
1. A program surface controllable zonal oil production device, which is lowered into an oil well casing (3), comprising a first packer (1) and a second packer (2), characterized in that: the upper section of the first packer (1) is a liquid production part, the lower section of the first packer (1) is a liquid supply part, the liquid production part comprises an oil well pump (5) and a well flushing valve body (11), a pump tail pipe (4) is arranged on the outer side of the oil well pump (5), a well flushing valve upper joint (6), a second check valve (55), a first check valve (8), a well flushing liquid inlet hole (14), a ball seat (10) and an oil drainage sleeve (13) are sequentially arranged on the inner side of the well flushing valve body (11) from top to bottom, a well flushing valve lower joint (7) is connected to the inner side of the oil drainage sleeve (13), the lower end of the pump tail pipe (4) is connected with the well flushing valve upper joint (6), the well flushing valve lower joint (7) is connected with an oil well casing (3) through a self-sealing device, a sealing steel ball (9) is arranged in the ball seat (10), and a reset spring (12) is arranged between the ball seat; the liquid supply part comprises a first sub-production pipe column (16), a sand-loosening type safety joint (54), a second packer (2), a second sub-production pipe column, a connecting short section (53), an oil drainer, a tail pipe (60) and a blind plug (61), wherein the first sub-production pipe column (16) is sequentially provided with a first hydraulic switch, a first sand filtering pipe and a first balance valve from top to bottom, and the second sub-production pipe column is sequentially provided with a second hydraulic switch, a second sand filtering pipe (38) and a second balance valve from top to bottom, wherein the first sub-production pipe column (16) forms a first level liquid supply system, and the second sub-production pipe column forms a second level liquid supply system; and a plurality of layer liquid supply systems are arranged according to the number of oil layers, so that the respective exploitation of the layers of the oil layers is realized.
2. The apparatus of claim 1 wherein the process comprises the steps of: the sand loosening type safety joint (54) is sequentially provided with a sand loosening type safety joint upper joint (17), a safety shear pin (19), a shear ring (20), a first sealing piston (21) and a sand loosening type safety joint lower joint (18) from top to bottom, wherein the sand loosening type safety joint lower joint (18) is connected with a second packer (2), and the sand loosening type safety joint upper joint (17) is connected with an oil pipe below a first branch production pipe column (16).
3. The apparatus of claim 1 wherein the process comprises the steps of: the first hydraulic switch is identical to the second hydraulic switch in structure, the second hydraulic switch comprises a hydraulic switch upper connector (22), a locking pin (23), a second sealing piston (24), a hydraulic switch central tube (27), a reversing assembly, a first pressure recovery spring (35), a sealing cylinder sleeve (36) and a hydraulic switch lower connector (37), the upper ends of the hydraulic switch central tube (27) and the sealing cylinder sleeve (36) are connected with the hydraulic switch upper connector (22), the hydraulic switch upper connector (22) is connected with an upper tubular column, the lower ends of the hydraulic switch central tube (27) and the sealing cylinder sleeve (36) are connected with the hydraulic switch lower connector (37), a liquid passing hole is formed in the hydraulic switch lower connector (37), the hydraulic switch lower connector (37) is connected with the lower tubular column, a liquid inlet hole is formed in the upper portion of the hydraulic switch central tube (27), and liquid between the hydraulic switch central tube (27) and the sealing cylinder sleeve (36) is compressed through the liquid inlet hole of the hydraulic switch central tube (27) The reversing assembly comprises a second sealing piston (24), a pressure opening spring (25), a one-way valve (26), a single-flow slideway body (30), a return-to-zero spring (28), a spring seat (29), a single-flow slideway body bearing sleeve (31), a track pin (33), a rotating ring (32) and a rotating ring pressing cap (34), wherein the rotating ring (32) is arranged in the rotating ring pressing cap (34), the track pin (33) is arranged on the rotating ring (32), a track (c) with the milling depth of 2-3mm is arranged on the outer wall of the hydraulic switch central tube (27), liquid exerts pressure on the single-flow slideway body (30), the single-flow slideway body pressure bearing sleeve (31) and the rotating ring pressure cap (34) through the second sealing piston (24) and the one-way valve (26), the rotation reversing and zeroing procedure of the swivel (32) is realized by the movement of the track pin (33) in the track (c).
4. The apparatus of claim 1 wherein the process comprises the steps of: the connection structure of the first sand screen and the second sand screen (38) is the same, and the upper end and the lower end of the second sand screen (38) are connected with the pipe column through pipe threads by an opening baffle ring (39) and a connecting sleeve (40).
5. The apparatus of claim 1 wherein the process comprises the steps of: the structure of the first balance valve is the same as that of the second balance valve, the second balance valve comprises a second balance valve body (46), an upper joint of the second balance valve, an energy storage piston (48), a pressure relief piston (50), a power piston (49), a pressure relief spring (47), a power spring (45), a pressure rise piston (44), a pressure rise spring (42), a pressure adjusting bolt (41), a lower joint of the second balance valve (52) and a linkage sheet (51) are arranged on the second balance valve body (46), the lower joint of the second balance valve (52) is connected with the upper part of a connecting short section (53), the upper joint of the second balance valve is connected with a central oil pipe of a connecting sleeve (40) and a central oil pipe of a second sand filter pipe, a second signal switch is arranged at a liquid discharge hole of the second balance valve and comprises a signal switch body (43), a welding seam (62), a pressure limiting piston (15), a sealing pressure regulating ball seat (63) is arranged inside the second balance valve body, The upper end and the lower end of the signal switch body (43) are provided with thread screw threads which are directly connected with the outside, and the upper end and the lower end of the signal switch body are respectively connected with an upper pipe column and a lower pipe column through the thread screw threads; the opening pressure of the pressure limiting piston (15) is limited within a design range through potential energy stored by the constant pressure spring (65), due design pressure is obtained through adjustment of the pressure adjusting bolt (41), finally, the integrated design of the second signal switch is completed through welding, and the first signal switch and the second signal switch are identical in structure.
6. The apparatus of claim 1 wherein the process comprises the steps of: the oil drain device comprises an oil drain device body (59), a tail pipe (60) and a blind plug (61), wherein an oil drain ball seat (57) and a second pressure recovery spring (58) are sequentially arranged on the inner side of the oil drain device body (59) from top to bottom, the upper part of the oil drain device body (59) is connected with the lower part of a connecting short section (53), the lower part of the oil drain device body (59) is connected with the upper part of the tail pipe (60), and the blind plug (61) is arranged on the lower part of the tail pipe (60).
7. The apparatus of claim 3 wherein the process comprises the steps of: the track (c) comprises an upper track (d), a middle track (e) and a lower track (g), wherein the top dead center of the upper track (d) is formed by a shorter opening point (b) and a longer closing point (a) at intervals; the tail end point of the middle track (e) is formed by the reversing points (f) with the same length at intervals, the lower track (g) is only provided with a bottom dead center (h), the bottom dead center (h) is communicated with all the reversing points (f) through the tracks, and the bottom dead center (h) is a program zeroing position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810232605.1A CN108518208B (en) | 2018-03-21 | 2018-03-21 | Layered oil production device with ground program control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810232605.1A CN108518208B (en) | 2018-03-21 | 2018-03-21 | Layered oil production device with ground program control function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108518208A CN108518208A (en) | 2018-09-11 |
| CN108518208B true CN108518208B (en) | 2021-01-26 |
Family
ID=63432924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810232605.1A Active CN108518208B (en) | 2018-03-21 | 2018-03-21 | Layered oil production device with ground program control function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518208B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322640B (en) * | 2018-12-11 | 2023-12-22 | 山东博赛特石油技术有限公司 | Hydraulic packing communicating vessel |
| CN109723411B (en) * | 2019-01-07 | 2021-09-24 | 盐城旭东机械有限公司 | Layered oil production device for side drilling |
| CN109458162B (en) * | 2019-01-07 | 2021-03-26 | 王皓 | Hydraulic switch device for stratified oil production for side drilling |
| CN112177575B (en) * | 2019-07-02 | 2023-12-29 | 中国石油化工股份有限公司 | Sand mould-proof hydraulic layer-changing exploitation pipe column and use method thereof |
| CN111206904A (en) * | 2019-11-15 | 2020-05-29 | 王凯 | Hydraulic switch capable of automatically realizing reversing balance of oil sleeve pressure |
| CN114439398B (en) * | 2020-10-19 | 2024-03-22 | 中国石油化工股份有限公司 | Underground hydraulic control pressure distribution device for oil-water well |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2005114603A (en) * | 2005-05-13 | 2006-11-20 | Открытое Акционерное Общество "Татнефть" им. В.Д.Шашина (RU) | PUMPING UNIT FOR SIMULTANEOUS SEPARATE OPERATION OF TWO LAYERS IN A WELL |
| CN201568034U (en) * | 2009-11-11 | 2010-09-01 | 中国石油天然气股份有限公司 | Selective zone commingled oil production pipe string |
| CN103510928A (en) * | 2013-10-11 | 2014-01-15 | 王志强 | Layered oil exploitation device |
| US20140083684A1 (en) * | 2012-09-26 | 2014-03-27 | Halliburton Energy Services, Inc. | Tubing conveyed multiple zone integrated intelligent well completion |
| CN203515527U (en) * | 2013-10-11 | 2014-04-02 | 王志强 | Layering oil extraction device |
| CN104265188A (en) * | 2014-09-04 | 2015-01-07 | 江苏大学 | Intelligent crossover coupling |
| RU2598948C1 (en) * | 2015-09-30 | 2016-10-10 | Акционерное общество "Новомет-Пермь" | Landing for dual production and injection |
| CN107558964A (en) * | 2017-09-27 | 2018-01-09 | 刘玉友 | A kind of continuous reversing arrangement of the unidirectional tubing string of oil production by layer and method |
-
2018
- 2018-03-21 CN CN201810232605.1A patent/CN108518208B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2005114603A (en) * | 2005-05-13 | 2006-11-20 | Открытое Акционерное Общество "Татнефть" им. В.Д.Шашина (RU) | PUMPING UNIT FOR SIMULTANEOUS SEPARATE OPERATION OF TWO LAYERS IN A WELL |
| CN201568034U (en) * | 2009-11-11 | 2010-09-01 | 中国石油天然气股份有限公司 | Selective zone commingled oil production pipe string |
| US20140083684A1 (en) * | 2012-09-26 | 2014-03-27 | Halliburton Energy Services, Inc. | Tubing conveyed multiple zone integrated intelligent well completion |
| CN103510928A (en) * | 2013-10-11 | 2014-01-15 | 王志强 | Layered oil exploitation device |
| CN203515527U (en) * | 2013-10-11 | 2014-04-02 | 王志强 | Layering oil extraction device |
| CN104265188A (en) * | 2014-09-04 | 2015-01-07 | 江苏大学 | Intelligent crossover coupling |
| RU2598948C1 (en) * | 2015-09-30 | 2016-10-10 | Акционерное общество "Новомет-Пермь" | Landing for dual production and injection |
| CN107558964A (en) * | 2017-09-27 | 2018-01-09 | 刘玉友 | A kind of continuous reversing arrangement of the unidirectional tubing string of oil production by layer and method |
Non-Patent Citations (1)
| Title |
|---|
| 华北油田不动管柱换层采油技术研究与应用;谢唯一;《中国优秀硕士学位论文全文数据库工程科技I辑》;20120315(第3期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108518208A (en) | 2018-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108518208B (en) | Layered oil production device with ground program control function | |
| CN107542433B (en) | Pressure sliding sleeve control type gas well continuous drainage gas production plunger | |
| RU2282708C1 (en) | Downhole hydraulic jack for releasing of stuck pipes | |
| CN108625830B (en) | Ball throwing type layering sand prevention process pipe column and method thereof | |
| CN107762444B (en) | Integrated tubular column for well cementation and sand prevention and use method | |
| CN111827327B (en) | Soft soil foundation layered dewatering construction structure and construction method | |
| CN110055988B (en) | Internal curtain type mixing well for foundation pit drainage-depressurization, working method and application | |
| CN109458162B (en) | Hydraulic switch device for stratified oil production for side drilling | |
| CN107630696A (en) | The underground pressure testing device and its pressure-measuring method of a kind of ground blowout hookup | |
| CN110761729B (en) | Sticking construction method | |
| CN110984926B (en) | Intelligent control layered oil extraction well completion pipe string system and control method thereof | |
| CN103790529A (en) | Coalbed methane drainage extraction and backwashing device and method | |
| CN112761595A (en) | Sand prevention tool for layered oil production with electromagnetic switch | |
| CN108019167B (en) | Switch well flushing device for underground and use method thereof | |
| CN113356813B (en) | Pressure drive injector, using pipe column and multi-round sub-layer pressure drive method | |
| CN115434665A (en) | Shaft opening and closing tool free of well-killing tripping operation and process method | |
| CN213450304U (en) | Sand filtering pipe sand control is washed off and is stuck technique tubular column of releasing down suitable for big angle well in beach sea | |
| CN112709556B (en) | Rapid well completion pipe string for offshore oilfield water injection well and construction method | |
| CN110847846B (en) | Packer for oil field exploitation | |
| CN211422611U (en) | Intelligent control separate-layer oil production well completion pipe string system | |
| CN115992674A (en) | Offshore oilfield multilayer real-time layered measurement and control safety production string and use method thereof | |
| CN208777954U (en) | A kind of anti-flushing well sand-settling device | |
| CN112211588A (en) | Multi-layer fracturing setting tool structure with fixed pipe column | |
| CN109252824B (en) | Fishing device and method for underground sand-buried pipe column of oil-water well | |
| CN206668215U (en) | Oil-water well sand filtering pipe column oil jacket communicating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220429 Address after: 257051 east of No. 22, Dongxin oil production plant, east of Xisan Road, Dongying District, Dongying City, Shandong Province Patentee after: Dongying Jinyu Petroleum Machinery Co.,Ltd. Address before: No. 259, Zhaoxi village, Yandian Town, Yanzhou City, Jining City, Shandong Province 272108 Patentee before: Wang Kai |