CN212396613U

CN212396613U - Well cementation additive preparation system

Info

Publication number: CN212396613U
Application number: CN202020326811.1U
Authority: CN
Inventors: 李海鑫; 刘洪李; 邵振友; 侯林; 张冉; 季威
Original assignee: China Oilfield Services Ltd
Current assignee: China Oilfield Services Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2021-01-26
Anticipated expiration: 2030-03-16

Abstract

The utility model discloses a well cementation additive prepares system relates to oil drilling technical field, including the additive feed mechanism that is used for providing multiple additive, a metering mechanism for metering additive, a mixing mechanism and the control mechanism that is used for the multiple additive with the measurement to mix, metering mechanism is through first pipeline and additive feed mechanism intercommunication, and through second pipeline and mixing mechanism intercommunication, control mechanism includes the controller and is used for detecting the detector of metering mechanism internal additive dosage, the detector sets up on metering mechanism, the controller is used for the additive dosage information according to the detector feedback, control additive feed mechanism's supply flow. The embodiment of the utility model provides a through the additive dosage information according to the detector feedback, control additive feed mechanism's the supply flow, prevented the inaccurate problem of additive control measurement that signal feedback time and mechanism action time delay caused, promoted the preparation precision of additive.

Description

Well cementation additive preparation system

Technical Field

The utility model relates to an oil drilling technical field, more specifically relates to a well cementation additive preparation system.

Background

Well cementation is the last key procedure of petroleum drilling, cement slurry technology is the core technology of well cementation, the adjustment of the performance of cement slurry mainly depends on oil well cement additives, and a part of the cement additives need to be prepared in an on-site water tank.

In the related technology, a simple manual system is adopted for preparing the ocean platform well cementation additive, manual measurement is mainly adopted as a measurement mode, and the risk of poor measurement accuracy and high error rate exists.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a well cementation additive prepares system for solve the poor and high problem of error rate of well cementation additive preparation precision.

The embodiment of the utility model provides a well cementation additive prepares system, including the additive feed mechanism that is used for providing multiple additive, a metering mechanism for the additive of measurement, a mixing mechanism and the control mechanism for mixing the multiple additive of measurement, metering mechanism communicates through first pipeline and additive feed mechanism, and communicate through second pipeline and mixing mechanism, control mechanism includes the controller and is used for detecting the detector of additive dose in the metering mechanism, the detector sets up on metering mechanism, the controller is used for the additive dose information according to the detector feedback, control additive feed mechanism's supply flow.

The embodiment of the utility model provides a through the additive dosage information of controller according to the detector feedback, the supply flow of control additive feed mechanism has prevented the inaccurate problem of additive control measurement that signal feedback time and mechanism action time delay caused, has promoted the preparation precision of additive, has avoided the well cementation quality accident.

Additional features and advantages 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 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 present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention and not to limit the embodiments of the invention.

FIG. 1 is a structural diagram of a system for preparing a cementing additive according to an embodiment of the present invention.

Description of the reference numerals

10-a well cementation additive preparation system; 20-an additive supply mechanism; 21-a liquid storage tank; 22-a supply pump; 23-a first valve; 30-a metering mechanism; 31-a metering tank; 32-a first valve; 40-a mixing mechanism; 41-mixing tank; 42-a third valve; 61-a first conduit; 62-a second conduit; 621-secondary pipe; 622 — common conduit; 623 main conduit.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, 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.

Well cementation is the last key procedure of petroleum drilling, cement slurry technology is the core technology of well cementation, the adjustment of the performance of cement slurry mainly depends on oil well cement additives, and a part of the cement additives need to be prepared in an on-site water tank. If the dissolution of the medicine is not uniform and the content fluctuation is large, the performance of the cement slurry is unstable, thereby causing the quality accident of well cementation. In the related technology, a simple manual system is adopted for preparing the ocean platform well cementation additive, manual measurement is mainly adopted as a measurement mode, and the risk of poor measurement accuracy and high error rate exists.

In order to solve the poor and high problem of error rate of well cementation additive preparation precision, the embodiment of the utility model provides a well cementation additive preparation system, including the additive feed mechanism who is used for providing multiple additive, a metering mechanism for metering additive, a mixing mechanism and the control mechanism that is used for the multiple additive that will measure to mix, metering mechanism communicates through first pipeline and additive feed mechanism, and communicate with mixing mechanism through the second pipeline, control mechanism includes the controller and is used for detecting the detector of metering mechanism internal additive dosage, the detector sets up on metering mechanism, the controller is used for the additive dosage information according to the detector feedback, control additive feed mechanism's supply flow.

The embodiment of the utility model provides a through the additive dosage information of controller according to the detector feedback, control additive feed mechanism's the supply flow, prevented the inaccurate problem of additive control measurement that signal feedback time and mechanism action time delay caused, promoted the preparation precision of additive, avoided well cementation quality accident.

The technical scheme of the embodiment of the invention for preparing the well cementation additive is specifically described below by combining the attached drawings.

FIG. 1 is a structural diagram of a system for preparing a cementing additive according to an embodiment of the present invention. As shown in FIG. 1, a cement additive formulation system 10 includes: the system comprises an additive supply mechanism 20, a metering mechanism 30, a mixing mechanism 40 and a control mechanism 50, wherein the metering mechanism 30 is communicated with the additive supply mechanism 20 through a first pipeline 61, and is communicated with the mixing mechanism 40 through a second pipeline 62, the additive supply mechanism 20 is used for supplying a plurality of additives, the metering mechanism 30 is used for metering the additives, and the mixing mechanism 40 is used for mixing the metered additives to prepare the well cementation additive. The control mechanism 50 is used for controlling the preparation process of the well cementation additive and ensuring the preparation precision of the well cementation additive.

As shown in fig. 1, the additive supply mechanism 20 includes a plurality of reservoir tanks 21 for communicating with the first pipe 61, a supply pump 22 provided on the first pipe 61, and a first valve 23 provided on the first pipe 61 and located on a side of the supply pump 22 away from the reservoir tanks 21. In one example, the number of the liquid storage tanks 21 may be 3, 4, 5 or 7, the number of the liquid storage tanks 21 corresponds to the type of the additive, or may be more than the type of the additive, and the redundant liquid storage tanks 21 may be used as spare liquid storage tanks, and the spare liquid storage tanks may be activated when the liquid storage tanks 21 in normal operation need maintenance or new additive is added. Each reservoir tank 21 is provided with a first pipe 22, and each first pipe 61 is provided with a feed pump 22 and a first valve 23. The diameter of the first pipes 61 may be different or the same, and may be selected according to the nature of the additive and the supply amount of the additive, for example, the first pipes 61 communicating with 7 tanks 21 may include two first pipes 61 having a pipe diameter of 3 inches, two first pipes 61 having a pipe diameter of 2 inches, and three first pipes 61 having a pipe diameter of 1.5 inches. The feed pump 22 may be a diaphragm pump, which is a pump for pumping liquid by supplying power with compressed gas, and the diaphragm pump may include three specifications corresponding to the diameters of the first pipes 61, respectively, and a compressed gas supply system used in cooperation with the diaphragm pump when the diaphragm pump is used. The first valve 23 may be an electrically controlled proportional valve, and the electrically controlled proportional valve may adjust the cross-sectional area of the valve element according to the magnitude of the control signal, so as to adjust the pipe diameter of the first pipeline in stages, thereby realizing the flow adjustment of the additive. The additive supply mechanism 20 further includes a first stirring mechanism disposed on the liquid storage tank 21, the first stirring mechanism is used for stirring the additives to be mixed, and the preparation solvent of the additives can be clear water or seawater. The first stirring mechanism may include a rotation shaft provided in the liquid storage tank, a blade provided on the rotation shaft, and a motor for driving the rotation shaft to rotate. In the preparation process of the well cementation additive, the viscosity difference of the additive is large, the viscosity span is about 0-40000CP, the quantity difference of the additive in each batch is large, and the span is about a few tenths of a percent to a dozen percent.

As shown in fig. 1, the metering mechanism 30 includes a plurality of metering tanks 31 and second valves 32 provided on the second piping 62, and the number of the metering tanks 31 corresponds to the number of the reserve tanks 21. The measuring tanks 31 are communicated with the reservoir tank 21 through the first pipes 61, and the volumes of the measuring tanks 31 may be the same or different according to actual needs. For example, the volumes of 7 metering tanks may be 80gal, 60gal, 40gal, 20ga and 5gal, respectively, without limitation. The second valve 32 is used to drain or close the metering tank and the second valve 32 may be a butterfly valve. The metering mechanism 30 further comprises a second stirring mechanism arranged on the metering tank 31 and used for stirring the additive after metering in the metering tank, so that the additive is uniformly and fully mixed. The second stirring mechanism has the same structure as the first stirring mechanism.

As shown in fig. l, the mixing mechanism 40 includes a plurality of mixing tanks 41, and the mixing tanks 41 communicate with the plurality of metering tanks 31 through second pipes 62. The volumes of the plurality of mixing tanks 41 may be the same or different, and the contents of the respective additives in each mixing tank 41 may be the same or different. The second conduit 62 may be plural, and each mixing tank 41 communicates with plural metering tanks 31 through the second conduit 62. In one example, the second pipeline 62 includes a plurality of sub pipelines 621, a common pipeline 622 communicating with the plurality of sub pipelines 621, and a plurality of main pipelines 623 communicating with the common pipeline 622, each metering tank 31 communicates with at least one sub pipeline 621, each mixing tank 41 communicates with at least one main pipeline 623, a second valve is disposed on the sub pipeline 621, and the mixing mechanism 40 further includes a third valve 42 disposed on the main pipeline 623. The kind of additive to be added to the mixing tank 41 can be controlled by the second valve 32, and the appropriate mixing tank 41 can be selected by the third valve 42. The third valve 42 may be a butterfly valve. The mixing tank may be provided on the cementing pump skid. The mixing mechanism 40 further comprises a third stirring mechanism which is arranged on the mixing tank and used for stirring the well cementation additive, and the third stirring mechanism is the same as the first stirring mechanism in structure.

As shown in fig. 1, the control mechanism 50 includes a detector 51 and a controller 52, the detector 51 is used for detecting the additive dosage in the metering mechanism 30, the detector 51 is disposed on the metering tank 31, the detector 51 can be a liquid level meter, and the additive dosage can be the liquid level in the metering tank. The controller 52 is electrically connected to the first valve 23, the feed pump 22, the second valve 32, the third valve 42, and the like. The controller 52 is used for receiving the dosage information of the additive fed back by the detector 51, controlling the additive supply mechanism 20 to reduce the additive supply flow in advance, and controlling the additive supply mechanism 20 to stop supplying after the additive reaches the set metering, and finally completing the preparation of the cementing additive. In one example, the controller 52 may be a PLC, the level gauge 51 may be a radar level gauge, and the additive dosage information is level information. In some embodiments, the detector 51 may also select a weight scale, the additive dosage information is weight information, and the controller 52 controls the additive supply mechanism and the like to perform related actions according to the weight information of the metering tank 31. The control mechanism 50 is integrated on the cementing master.

The technical scheme of the embodiment of the utility model is further explained by the working principle of the well cementation additive preparation system.

As shown in fig. 1, the dosage of the additive corresponding to each metering tank 31 is converted according to the total required amount of the cementing additive, and then the calculated dosage of the additive is input to the controller 52. The controller 52 controls the first valve 23 and the supply pump 22 to be opened, the additive is pumped into the metering tanks 31, each metering tank 31 corresponds to different additive, the detector 51 detects the dosage of the additive in each metering tank 31 and feeds back additive dosage information in real time, the controller 52 sends a control signal to the first valve 23 before the additive in the metering tanks 31 approaches a target dosage, the first valve 23 is made to reduce the inner diameter of the first pipeline 61 in stages, the flow rate of the additive in the first pipeline 61 is reduced, and when the additive in the metering tanks 31 reaches the target dosage, the controller 52 closes the first valve 23 and the supply pump 22. The controller 52 opens the corresponding second valve 32 and third valve 42 according to the preset information, mixes various additives in the corresponding mixing tank 41, completes the preparation of the well cementation additive, and meets the required amount of each batch of additives. Here too, manual control is possible.

The embodiment of the utility model provides a well cementation additive prepares system, additive dosage information according to the detector feedback through the controller, control additive feeding mechanism supplies with the automation that the additive has realized the additive and has prepared, and the controller controls additive feeding mechanism in advance and reduces the supply flow, and control additive feeding mechanism stop the supply after the additive reaches the settlement measurement, the inaccurate problem of additive control measurement that signal feedback time and mechanism action time delay caused has been prevented, the preparation precision of additive has been promoted, well cementation quality accident has been avoided.

In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "mouth" word structure "and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and thus, is not to be construed as limiting the present invention.

In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "directly connected," "indirectly connected," "fixedly connected," "mounted," and "assembled" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; the terms "mounted," "connected," and "fixedly connected" may be directly connected or indirectly connected through intervening media, or may be connected through two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A system for formulating a cementing additive, comprising: the additive metering device comprises an additive supply mechanism for providing a plurality of additives, a metering mechanism for metering the additives, a mixing mechanism for mixing the metered additives and a control mechanism, wherein the metering mechanism is communicated with the additive supply mechanism through a first pipeline and communicated with the mixing mechanism through a second pipeline, the control mechanism comprises a controller and a detector for detecting the dosage of the additives in the metering mechanism, the detector is arranged on the metering mechanism, and the controller is used for controlling the supply flow of the additive supply mechanism according to the dosage information of the additives fed back by the detector.

2. The cement additive formulation system as claimed in claim 1, wherein: the detector is a liquid level meter, the additive dosage information is liquid level information, or the detector is a weight measuring instrument, and the additive dosage information is weight information.

3. A cement additive formulation system according to claim 1 or 2, wherein: the additive supply mechanism comprises a plurality of liquid storage tanks communicated with a first pipeline, a supply pump arranged on the first pipeline and a first valve arranged on the first pipeline and positioned on one side, far away from the liquid storage tanks, of the supply pump, and the controller is connected with the supply pump and the first valve and used for controlling the supply pump to be opened and closed and controlling the first valve to adjust the pipe diameter of the first pipeline.

4. The cement additive formulation system as claimed in claim 3, wherein: the feed pump comprises a diaphragm pump and the first valve comprises an electrically controlled proportional valve.

5. The cement additive formulation system as claimed in claim 3, wherein: the additive supply mechanism further comprises a first stirring mechanism arranged on the liquid storage tank.

6. A cement additive formulation system according to claim 1 or 2, wherein: the metering mechanism comprises a plurality of metering tanks and a second valve arranged on a second pipeline, and the controller is connected with the second valve and used for controlling the opening and closing of the second valve.

7. The cement additive formulation system as claimed in claim 6, wherein: the mixing mechanism includes a plurality of mixing tanks in communication with the plurality of metering tanks through a second conduit.

8. The cement additive formulation system as claimed in claim 6, wherein: the mixing mechanism includes a plurality of blending tanks, the second pipeline includes a plurality of auxiliary lines, with a plurality of auxiliary line intercommunication sharing pipeline and with a plurality of trunk lines of sharing pipeline intercommunication, every the metering tank communicates with an auxiliary line at least, every the blending tank communicates with a trunk line at least, set up on the auxiliary line the second valve, the mixing mechanism still including set up in third valve on the trunk line, the controller is connected with the third valve, and is used for control opening and closing of third valve.

9. The cement additive formulation system as claimed in claim 8, wherein: the second valve and the third valve are butterfly valves.

10. The cement additive formulation system as claimed in claim 8, wherein: the metering mechanism comprises a second stirring mechanism arranged on the metering tank, and the mixing mechanism comprises a third stirring mechanism arranged on the mixing tank.