阅读说明：本技术 一种信息化智能采油系统 (Informationized intelligent oil production system ) 是由 卢秀春 刘旭 刘丰 刘阳 于 2020-06-24 设计创作，主要内容包括：本发明公开了一种信息化智能采油系统,包括采油现场井下装置、采油现场地面端装置、专用工业计算机,采油现场井下装置包括潜油直线电机、长线动力电缆,潜油直线电机包括动力装置、单作用筒式柱塞泵,其中动力装置的上护管上端与所述单作用筒式柱塞泵外壳螺纹相连接,且动力装置的动子的上端与单作用筒式柱塞泵的柱塞杆下端螺纹相连,动力装置的机壳下端与动力装置的下护管上端螺纹联接。本发明将潜油直线电机机组中各部分功能进行合理调控、优化、高效地提升潜油直线电机机组性能。(The invention discloses an information intelligent oil extraction system, which comprises an oil extraction site underground device, an oil extraction site surface end device and a special industrial computer, wherein the oil extraction site underground device comprises an oil-submersible linear motor and a long-line power cable, the oil-submersible linear motor comprises a power device and a single-action cylinder type plunger pump, the upper end of an upper protective pipe of the power device is in threaded connection with a shell of the single-action cylinder type plunger pump, the upper end of a rotor of the power device is in threaded connection with the lower end of a plunger rod of the single-action cylinder type plunger pump, and the lower end of a shell of the power device is in threaded connection with the upper end of a lower protective pipe of the power device. The invention reasonably regulates, optimizes and efficiently improves the performance of the submersible linear motor unit.)

1. An information intelligent oil production system is characterized by comprising an oil production site underground device, an oil production site surface end device and a special industrial computer, wherein the oil production site underground device comprises an oil-submersible linear motor and a long-line power cable, the oil-submersible linear motor comprises a power device and a single-action cylinder type plunger pump, the upper end of an upper protective pipe of the power device is in threaded connection with a shell of the single-action cylinder type plunger pump, the upper end of a rotor of the power device is in threaded connection with the lower end of a plunger rod of the single-action cylinder type plunger pump, and the lower end of a shell of the power device is in threaded connection with the upper end of a lower protective pipe of the power device;

the oil extraction site end device comprises a power distribution system, an inverter, a three-phase voltage and current sensor, a microprocessor system, a driving and protecting system and a GPRS interface, wherein the power distribution system supplies power to the oil-submersible linear motor through a long-line power cable, the three-phase voltage and current sensor is connected with the long-line power cable, the microprocessor system is used for detecting the voltage and the current of each phase of the three-phase long-line power cable in real time and analyzing the voltage and the current by using a special algorithm to obtain the oil well liquid level depth, the underground motor working temperature and the reciprocating working state of a motor, the inverter is subjected to vector control through the driving and protecting system according to the obtained key parameter information, and the underground linear motor is controlled through the power cable to perform oil extraction work; the microprocessor system is in remote communication with the outside through a GPRS interface;

the special industrial computer is used for data service in remote access, and comprises a remote access client and a data center server, the data center server performs fine management on data of all devices in the system, and simultaneously provides data interfaces for remote managers and oil field managers, the remote managers and the oil field managers inquire the data through a special mobile phone APP of the remote access client or directly log in the data center server, and the working parameters of an oil extraction field are remotely configured and managed through the data server after authorization.

2. The intelligent oil recovery control system of claim 1 wherein the submersible linear motor comprises a stator, the upper port of the stator is in threaded connection with the lower port of the upper protective tube of the stator and is connected with the lower port of the single-acting cylinder plunger pump through a connecting sleeve to form a closed cavity, the upper end of the rotor in the inner cavity of the stator is rigidly connected with the lower end of the plunger of the single-acting cylinder plunger pump, and the lower port of the stator is in threaded connection with the upper port of the lower protective tube of the stator to form the closed cavity.

3. The intelligent oil recovery control system of claim 2 wherein the stator comprises a combined core and coils, each coil is sleeved on the corresponding combined core and mounted on a non-magnetic core barrel, two ends of the non-magnetic core barrel are welded with the inner holes of the flanges, the coils are connected in series through wires and are respectively inserted into dovetail grooves of the combined core through dovetail strips and are welded with the notches of the flanges at the two ends.

4. The intelligent production control system of claim 3, wherein the coil is composed of a plurality of combined turns of coil in series, each combined turns of coil is composed of i_nLine j_k+1A column of orthogonal winding structures, wherein j_k+1The columns are odd columns, where n and k are positive integers, wherein the odd turns of the coils of each combination are wound clockwise, and each combination is wound clockwiseThe even-numbered turns of the coil are wound counterclockwise.

5. The intelligent oil recovery control system of claim 1, wherein the rotor comprises a non-magnetic core shaft and a plurality of unit permanent magnetic slip rings, the plurality of unit permanent magnetic slip rings are sequentially arranged back to back on the surface of the non-magnetic core shaft, each unit permanent magnetic slip ring is composed of a left semi-magnetic slip ring, a permanent magnetic iron ring and a right semi-magnetic slip ring, and the plurality of unit permanent magnetic slip rings are arranged according to a certain rule.

Technical Field

The invention belongs to the technical field of motor control and state monitoring of oil extraction machinery, and particularly relates to an information intelligent oil extraction system.

Background

In the prior art, the beam pumping unit has the disadvantages of large size, low efficiency, large power consumption and energy waste. A large amount of idle operation is formed in the working cycle, a large amount of power consumption is wasted, and the system efficiency is only 24%. Because of the domestic reduction of underground energy, the water content of the oil field reaches 85%, the developed oil field wholly enters a stage with extremely high water content, meanwhile, the oil pumping characteristic of a traditional oil pumping machine with a rod pump is limited, the eccentric wear of a rod and a pipe is a stubborn disease of traditional oil extraction equipment, the eccentric wear of the rod and the pipe of a well pipe is not solved well, the single wear of an oil well with a single port reported by a certain oil field in China is considered, the replacement of the rod and the maintenance cost reaches 3 ten thousand yuan. In newly developed reserves, the specific lithology ratio of hypotonic, ultralow-permeability and compact oil reaches 80%, and the longitudinal layout of the push inclined well, the horizontal well and the large well cannot be solved by the beam pumping unit. In addition, the beam pumping unit adopts a rod oil extraction mode, so that 'oil falling to the ground' is easily generated at a packing position, and severe pollution is caused to a well site and the surrounding environment. Because the traditional equipment has inherent defects in structure, good sealing can not be realized at a well mouth, and a large amount of oil falling to the ground is inevitably generated due to flooding of flood areas, so that the ground and the water surface are adversely affected, and particularly, since the 'new two laws' are issued, leakage accidents of the traditional equipment frequently occur and can not meet the requirements of the current laws and regulations.

The prior reciprocating electric submersible pump technology partially solves the problem of low-permeability small-displacement oil extraction, but does not solve the problems of low stroke frequency, large thrust and large displacement. The domestic reciprocating electric submersible pump technology cannot meet the requirements of the current underground working condition, the periodic operation non-working frequency is too high, and the adjustable frequency range of the periodic continuous working load is too narrow. The realization of slow start, slow stop and automatic brake at any position is not solved. The existing reciprocating electric submersible pump cannot realize the detection of underground pressure, temperature and the working fluid level and the position detection intelligence of the rotor. The heating value of the iron core and the magnetic yoke is large, the insulating property can be reduced, the reciprocating electric submersible pump has overlarge magnetic air gap due to the structural characteristics, the thrust and the efficiency are influenced, the insulating oil is filled in the sealing cavity of the stator, and the insulating oil is deteriorated due to long-term work under the conditions of high temperature and high pressure, so that the insulativity is seriously reduced, and the reliability of the electric submersible motor is reduced.

Disclosure of Invention

In view of the above technical problems, an object of the present invention is to provide an intelligent submersible linear motor and a plunger pump assembly, which integrate an intelligent control system and a sensing technology, a submersible linear motor power device, and a single-acting cylinder plunger pump to form an intelligent oil extraction technology.

In order to realize the purpose, the invention is realized according to the following technical scheme:

an information intelligent oil production system is characterized by comprising an oil production site underground device, an oil production site surface end device and a special industrial computer, wherein the oil production site underground device comprises an oil-submersible linear motor and a long-line power cable, the oil-submersible linear motor comprises a power device and a single-action cylinder type plunger pump, the upper end of an upper protective pipe of the power device is in threaded connection with a shell of the single-action cylinder type plunger pump, the upper end of a rotor of the power device is in threaded connection with the lower end of a plunger rod of the single-action cylinder type plunger pump, and the lower end of a shell of the power device is in threaded connection with the upper end of a lower protective pipe of the power device;

the oil extraction site end device comprises a power distribution system, an inverter, a three-phase voltage and current sensor, a microprocessor system, a driving and protecting system and a GPRS interface, wherein the power distribution system supplies power to the oil-submersible linear motor through a long-line power cable, the three-phase voltage and current sensor is connected with the long-line power cable, the microprocessor system is used for detecting the voltage and the current of each phase of the three-phase long-line power cable in real time and analyzing the voltage and the current by using a special algorithm to obtain the oil well liquid level depth, the underground motor working temperature and the reciprocating working state of a motor, the inverter is subjected to vector control through the driving and protecting system according to the obtained key parameter information, and the underground linear motor is controlled through the power cable to perform oil extraction work; the microprocessor system is in remote communication with the outside through a GPRS interface;

the special industrial computer is used for data service in remote access, and comprises a remote access client and a data center server, the data center server performs fine management on data of all devices in the system, and simultaneously provides data interfaces for remote managers and oil field managers, the remote managers and the oil field managers inquire the data through a special mobile phone APP of the remote access client or directly log in the data center server, and the working parameters of an oil extraction field are remotely configured and managed through the data server after authorization.

In the technical scheme, the submersible linear motor comprises a stator, wherein an upper port of the stator is in threaded connection with a lower port of an upper protective pipe of the stator and is connected with a lower port of a single-action cylinder type plunger pump through a connecting sleeve to form a closed cavity, the upper end part of a rotor in an inner cavity of the stator is rigidly connected with the lower end part of a plunger of the single-action cylinder type plunger pump, and the lower port of the stator and the upper port of the lower protective pipe of the stator are in threaded connection to form the closed cavity.

In the technical scheme, the stator comprises combined iron cores and coils, each coil is sleeved on the corresponding combined iron core and is installed on a non-magnetic-conductive core barrel, two ends of the non-magnetic-conductive core barrel are welded with inner holes of the flange plates, the coils are connected in series through conducting wires, are inserted into dovetail grooves of the combined iron cores through dovetail strips respectively, and are welded with notches of the flange plates at two ends.

In the above technical solution, the coil is formed by connecting a plurality of combined turns in series, and each combined turn is formed by i_nLine j_k+1A column of orthogonal winding structures, wherein j_k+1The columns are odd columns, where n and k are positive integers, wherein each combination of odd turn coils is wound clockwise and each combination of even turn coils is wound counter-clockwise.

In the above technical scheme, the mover includes a non-magnetic core shaft and a plurality of unit permanent magnetic slip rings, the plurality of unit permanent magnetic slip rings are sequentially arranged back to back on the surface of the non-magnetic core shaft, each unit permanent magnetic slip ring is composed of a left-end semi-magnetic slip ring, a permanent magnetic iron ring and a right-end semi-magnetic slip ring, and then the plurality of unit permanent magnetic slip rings are arranged according to a certain rule.

Compared with the prior art, the invention has the following advantages:

the invention reasonably regulates, optimizes and efficiently improves the performance of the submersible linear motor unit.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the control system of the present invention;

FIG. 3 is a stator schematic of the stator system of the present invention;

FIG. 4 is a schematic view of a mover system of the present invention;

fig. 5 is a stator coil winding diagram of the submersible linear motor of the present invention.

Wherein: 1-upper protective tube upper end, 2-plunger pump shell lower end, 3-rotor upper end, 4-plunger rod lower end, 5-machine shell lower end, 6-lower protective tube upper end, 7-stator, 8-rotor, 9-plunger pump, 10-lower protective tube 11-upper protective tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "radial," "axial," "upper," "lower," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The invention discloses an information intelligent oil production system, which comprises an oil production site underground device, an oil production site surface end device and a special industrial computer, wherein the oil production site underground device comprises an oil-submersible linear motor and a long-line power cable, the oil-submersible linear motor comprises a power device and a single-acting cylinder type plunger pump, the upper end of an upper protective pipe of the power device is in threaded connection with a shell of the single-acting cylinder type plunger pump, the upper end of a rotor is in threaded connection with the lower end of a plunger rod of the single-acting cylinder type plunger pump, and the lower end of a shell of the power device is in threaded connection with the upper end of a lower protective pipe of the power device;

as shown in fig. 2, the surface end equipment of the oil production field of the present invention is the core part of motor control, motor state monitoring, well condition measurement and remote data communication. The oil extraction site end device comprises a power distribution system, an inverter, a three-phase voltage and current sensor, a microprocessor system, a driving and protecting system and a GPRS interface, wherein the power distribution system supplies power to the oil-submersible linear motor through a long-line power cable, the three-phase voltage and current sensor is connected with the long-line power cable, the microprocessor system is used for detecting the voltage and the current of each phase of the three-phase long-line power cable in real time and analyzing the voltage and the current by using a special algorithm to obtain the oil well liquid level depth, the underground motor working temperature and the reciprocating working state of a motor, the vector control is carried out on the inverter through the driving and protecting system according to the obtained key parameter information by combining with a control strategy, and the underground linear motor is controlled through the power cable to carry out oil extraction work; the microprocessor system is in remote communication with the outside through a GPRS interface;

in the specific embodiment of the invention, the submersible linear motor comprises a stator, as shown in fig. 3, an upper port of the stator is in threaded connection with a lower port of an upper protective pipe of the stator and is connected with a lower port of a single-acting cylinder type plunger pump through a connecting sleeve to form a closed cavity, an upper end part of a rotor in an inner cavity of the stator is rigidly connected with a lower end part of a plunger of the single-acting cylinder type plunger pump, and the lower port of the stator is in threaded connection with the upper port of the lower protective pipe of the stator to form the closed cavity. The stator comprises combined iron cores and coils, wherein each coil is sleeved on the corresponding combined iron core and is arranged on a non-magnetic-conductive core cylinder, two ends of the non-magnetic-conductive core cylinder are welded with inner holes of the flange plates, the coils are connected in series through conducting wires, are inserted into dovetail grooves of the combined iron cores through dovetail strips respectively, and are welded with notches of the flange plates at two ends.

Specifically, the coil is composed of a plurality of combined turns of coils connected in series, and each combined turn of coils is composed of i_nLine j_k+1A column of orthogonal winding structures, wherein j_k+1The columns are odd columns, where n and k are positive integers, wherein each combination of odd turn coils is wound clockwise and each combination of even turn coils is wound counter-clockwise.

In a specific embodiment of the present invention, the submersible linear motor includes a mover, as shown in fig. 4, wherein the mover includes a non-magnetic core shaft and a plurality of unit permanent magnetic slip rings, and the plurality of unit permanent magnetic slip rings are sequentially arranged back to back on the surface of the non-magnetic core shaft, each unit permanent magnetic slip ring is composed of a left-end semi-magnetic slip ring, a permanent magnetic iron ring, and a right-end semi-magnetic slip ring, and then the plurality of unit permanent magnetic slip rings are arranged according to a certain rule.

As shown in fig. 2, the dedicated industrial computer of the present invention is used for remote access of data services, and includes a remote access client and a data center server, where the data center server performs fine management on data of all devices in a system, and provides data interfaces for a remote administrator and an oil field administrator, and the remote administrator and the oil field administrator query data through a dedicated mobile phone APP of the remote access client or directly log in the data center server, and remotely configure and manage working parameters of an oil production site through the data server after authorization.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.