阅读说明：本技术 一种电驱固井设备和调节方法 (electrically driven well cementing equipment and adjusting method ) 是由 侯林 廖明 刘洪李 李斌 杨力沛 雷彪 于海安 王同友 张冉 张贵磊 于 2019-08-12 设计创作，主要内容包括：本发明实施例公开了一种电驱固井设备和调节方法,所述设备包括：配电板和两路电驱支路,配电板为每路所述电驱支路供电,每路所述电驱支路包括依次相连的变频器、变频电机、变速箱、固井泵；两路所述电驱支路的固井泵所泵出的工业液体汇合后排出,所述变频电机的转速根据所获取的变频参数确定。以变频电机为动力源,驱动固井泵,实现固井作业的近程或远程控制。(The embodiment of the invention discloses electrically-driven well cementation equipment and an adjusting method, wherein the equipment comprises the following components: the power distribution board supplies power to each electric driving branch, and each electric driving branch comprises a frequency converter, a variable frequency motor, a gearbox and a well cementation pump which are sequentially connected; and industrial liquid pumped by the well cementation pumps of the two electric driving branches is discharged after being converged, and the rotating speed of the variable frequency motor is determined according to the obtained variable frequency parameters. The variable frequency motor is used as a power source to drive the well cementing pump, so that short-range or remote control of well cementing operation is realized.)

1. An electrically driven cementing apparatus, comprising: the power distribution board supplies power to each electric driving branch, and each electric driving branch comprises a frequency converter, a variable frequency motor, a gearbox and a well cementation pump which are sequentially connected; and industrial liquid pumped by the well cementation pumps of the two electric driving branches is discharged after being converged, and the rotating speed of the variable frequency motor is determined according to the obtained variable frequency parameters.

2. The electric-driven cementing equipment of claim 1, wherein each of the electric-driving branches further comprises a motor cooler disposed outside the inverter motor at a predetermined distance therefrom for cooling the inverter motor.

3. The electric drive cementing apparatus of claim 2, wherein the cooler comprises at least one of: a fan, an air-water heat exchanger and a water-cooling heat exchanger.

4. The electrically driven cementing apparatus of claim 1, wherein the frequency converter comprises: the rectifying unit, the filtering unit and the inversion unit are connected in sequence.

5. The electric-drive well cementation equipment as claimed in claim 1, wherein the variable frequency motor is an explosion-proof motor or an increased safety motor.

6. The electric-driven cementing apparatus of claim 1, wherein each of the electric-driving branches further comprises a frequency converter cooler disposed outside the frequency converter at a predetermined distance therefrom for cooling the frequency converter.

7. the electric-driven cementing apparatus of claim 6, wherein the inverter cooler comprises at least one of: fan, water-cooling heat exchanger.

8. electrically driven cementing equipment according to claim 1, wherein the cementing pump is a cementing plunger pump for pumping industrial liquid from a slurry tank.

9. A method of adjusting an electrically driven cementing device, characterized in that the electrically driven cementing device is an electrically driven cementing device according to any of the claims 1 to 8, comprising:

Acquiring frequency conversion parameters of a frequency converter;

determining the rotating speed of the variable frequency motor according to the variable frequency parameters;

The variable frequency motor drives the well cementation pump to work, and the pumped industrial liquid is discharged after being converged.

10. The adjustment method according to claim 9, wherein obtaining the frequency conversion parameters of the frequency converter comprises one of:

Receiving frequency conversion parameters set by a user;

Detecting the density parameter, the pressure parameter and the discharge capacity parameter of the pumped industrial liquid, and determining the frequency conversion parameter according to the corresponding relation of the density parameter, the pressure parameter, the discharge capacity parameter and the frequency conversion parameter.

Technical Field

the embodiment of the invention relates to a well cementation control technology, in particular to an electrically-driven well cementation device and an adjusting method.

background

The well cementation double-engine double-pump skid used in the offshore oil drilling platform at present uses two diesel engines as power sources, namely the two diesel engines respectively drive two plunger pumps; however, the problems of insufficient installed power, limited installation space, low explosion-proof level, high temperature and noise during working, equipment automation degree, equipment daily maintenance difficulty and the like caused by the well cementing pump prying driven by the diesel engine are more obvious in offshore oil deepwater drilling operation.

Disclosure of Invention

the embodiment of the invention provides electrically-driven well cementation equipment and an adjusting method, wherein a variable frequency motor is used as a power source to drive a well cementation pump, so that short-range or remote control of well cementation operation is realized.

To achieve the object of the embodiments of the present invention, an embodiment of the present invention provides an electrically driven well cementing apparatus, including: the power distribution board supplies power to each electric driving branch, and each electric driving branch comprises a frequency converter, a variable frequency motor, a gearbox and a well cementation pump which are sequentially connected; and industrial liquid pumped by the well cementation pumps of the two electric driving branches is discharged after being converged, and the rotating speed of the variable frequency motor is determined according to the obtained variable frequency parameters.

Preferably, each of the electric driving branches further comprises a motor cooler, and the motor cooler is arranged outside the variable frequency motor and at a preset distance from the variable frequency motor, and is used for cooling the variable frequency motor.

Preferably, the cooler comprises at least one of: a fan, an air-water heat exchanger and a water-cooling heat exchanger.

Preferably, the frequency converter includes: the rectifying unit, the filtering unit and the inversion unit are connected in sequence.

Preferably, the variable frequency motor is an explosion-proof motor or an increased safety motor.

Preferably, each of the electric drive branches further comprises a frequency converter cooler disposed outside the frequency converter at a predetermined distance from the frequency converter for cooling the frequency converter.

Preferably, the frequency converter cooler comprises at least one of: fan, water-cooling heat exchanger.

preferably, the cementing pump is a cementing plunger pump for pumping the industrial liquid from the slurry mixing tank.

The embodiment of the invention also provides an adjusting method of the electrically-driven well cementation equipment, wherein the electrically-driven well cementation equipment is the electrically-driven well cementation equipment and comprises the following steps:

Acquiring frequency conversion parameters of a frequency converter;

Determining the rotating speed of the variable frequency motor according to the variable frequency parameters;

The variable frequency motor drives the well cementation pump to work, and the pumped industrial liquid is discharged after being converged.

Preferably, the obtaining of the frequency conversion parameter of the frequency converter includes one of:

Receiving frequency conversion parameters set by a user;

Detecting the density parameter, the pressure parameter and the discharge capacity parameter of the pumped industrial liquid, and determining the frequency conversion parameter according to the corresponding relation of the density parameter, the pressure parameter, the discharge capacity parameter and the frequency conversion parameter.

the beneficial effects of the embodiment of the invention can include:

1. The embodiment of the invention uses the variable frequency motor to drive the well cementation pump, the installed power of the equipment can be doubled compared with the diesel engine drive in the same installation space, the working capacity is greatly improved, and the explosion-proof grade at least meets the requirements of ZONE II area;

2. The embodiment of the invention uses the variable frequency motor to drive the well cementation pump, so that the noise during working is effectively reduced, the variable frequency motor is generally not required to be maintained, the labor cost is reduced, and the working strength is reduced.

Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.

FIG. 1 is a schematic structural view of an electrically driven cementing apparatus of an embodiment of the present invention;

FIG. 2 is a flow chart of an electric drive cementing apparatus adjustment method of an embodiment of the present invention;

fig. 3 is a flowchart of the inverter control according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

the steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.