CN217400851U - Sand removal device and drilling fluid purification treatment system - Google Patents

Abstract

The utility model provides a sand removal device and drilling fluid purification treatment system, this sand removal device complement in the drilling fluid conical tank, including holding vessel, sewage pump, sewage pipe to and the clear defeated pipe that the slope was arranged. The collecting tank is located beside the drilling fluid conical tank, the sewage pump is located in the collecting tank, one end of the sewage pipe is connected with the sewage pump, the other end of the sewage pipe extends into the upper portion of the drilling fluid conical tank, the high end of the cleaning and conveying pipe is connected with the lower portion of the drilling fluid conical tank, and the low end of the cleaning and conveying pipe is connected with the collecting tank. Adopt the utility model provides a sand removal device can reduce sand removal intensity of labour, keeps the scene clean, also can facilitate for drilling waste innocent treatment on next step simultaneously.

Description

Sand removal device and drilling fluid purification treatment system

Technical Field

The utility model relates to an oil drilling technical field especially relates to a sand removal device and drilling fluid purification treatment system.

Background

In the petroleum drilling industry, drilling fluid is used for carrying drilling cuttings and mud sand at the bottom of a well during drilling, the temperature of a drill bit is reduced, and the formation pressure is balanced. The drilling fluid can be degraded after carrying drill cuttings and silt, and the drill cuttings and the silt are removed through a solid control device after being discharged from a wellhead. The drilling fluid conical tank is a tank body below a vibrating screen of the solid control device and is used for receiving mud screened by the vibrating screen, and the screened mud contains certain fine sand and is deposited at the bottom of the tank and needs to be cleaned in time.

The traditional sand removal mode is that firstly, slurry in a conical tank is pumped out, and then a sand removal door is opened to dig and discharge sand at the bottom of the tank into a soil pit outside the tank. However, the muddy water flows transversely in the discharging process, so that the field is dirty and bad, the environment is polluted, and meanwhile, a considerable part of the mud can be lost along with the mud and sand, and the resource waste is caused. In addition, with the improvement of environmental protection consciousness and the improvement of environmental protection requirements, the tank cleaning mode of directly discharging silt can not meet the environmental protection requirements. Therefore, how to provide a more environment-friendly and convenient sand removing device becomes a technical problem to be solved urgently by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a sand removal device and drilling fluid purification treatment system, this sand removal device can reduce sand removal intensity of labour, keeps on-the-spot clean, also can facilitate for drilling discarded object innocent treatment on next step simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme:

a sand removal device is matched with a drilling fluid conical tank, and comprises:

a collection tank located alongside the drilling fluid conical tank;

a sump pump located within the collection tank;

one end of the sewage pipe is connected with the sewage pump, and the other end of the sewage pipe extends into the upper part of the drilling fluid conical tank; and the high end of the cleaning and conveying pipe is connected with the lower part of the drilling fluid conical tank, and the low end of the cleaning and conveying pipe is connected with the collecting tank.

Optionally, in the sand removing device, the sand removing device further includes a flow guide pipe arranged obliquely, a high end of the flow guide pipe is connected with a slag discharge port of the vibrating screen, and a low end of the flow guide pipe is connected with a slag inlet at the top of the collecting tank.

Optionally, in the sand removing device, a sewage nozzle is disposed at a high-end inlet of the flow guide pipe, and is used for spraying water into the flow guide pipe for flushing.

Optionally, in the sand removing device, a high-pressure spray head is connected to an end of the sewage pipe far away from the sewage pump.

Optionally, in the sand cleaning device, the sewer is a high-pressure hose.

Optionally, in the sand cleaning device, the cleaning and conveying pipe is a metal pipe internally coated with a mirror wear-resistant coating, or a PPR pipe internally coated with a mirror wear-resistant coating.

Optionally, in the sand removing device, a delivery pump connected to the collecting tank through a pipeline is further included, and is used for draining the waste liquid in the collecting tank.

Optionally, in the sand-cleaning device, an agitator is arranged in the collecting tank.

Optionally, in the sand removing device, a prying seat is further included, and the delivery pump and the collection tank are fixed to the prying seat.

A drilling fluid purification treatment system comprising a sand removal device as disclosed in any one of the above.

According to the technical scheme, the utility model provides an among the sand removal device, the holding vessel setting is on one side at the drilling fluid conical tank, and both clear defeated union couplings that arrange through the slope, clear defeated high-end of pipe are connected in the lower part of drilling fluid conical tank, simultaneously, are provided with the sewage pump in the holding vessel to the upper portion of drilling fluid conical tank is delivered to the liquid in the accessible sewage pipe will holding vessel. When the mud sand in the drilling fluid conical tank is accumulated to a certain degree and needs to be cleaned, the solid control circulation process of the drilling fluid is suspended, the pump on the solid control circulation pipeline is used for pumping out the mud in the conical tank, then the corresponding valve is opened to ensure that the cleaning and conveying pipe is unblocked, the sewage pump in the collecting tank is started to pump the upper sewage in the tank body, the mud sand in the conical tank is impacted by the sewage, the mud sand is flushed into the cleaning and conveying pipe, and finally the mud sand flows into the collecting tank. Therefore, the utility model provides a sand removal device can reduce sand removal intensity of labour, keeps the scene clean, moreover, has accomplished the silt particle collection when sand removal, can facilitate for drilling discarded object innocent treatment on next step.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic layout view of a sand removing device provided by an embodiment of the present invention;

fig. 2 is a top view (with parts omitted) of fig. 1.

Labeled as:

1. a drilling fluid conical tank; 2. a sewage pipe; 3. a flow guide pipe; 4. a first valve; 5. a flexible joint; 6. clearing the conveying pipe; 7. a second valve; 8. a sewage pump; 9. a collection tank; 10. and (4) the ground.

Detailed Description

For the sake of understanding, the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1 and 2, the sand cleaning device provided by the embodiment of the present invention is matched with a drilling fluid conical tank 1, which comprises a collecting tank 9, a sewage pipe 2, a sewage pump 8, and a cleaning and conveying pipe 6 arranged in an inclined manner. The collecting tank 9 is positioned beside the drilling fluid conical tank 1, the high end of the cleaning and conveying pipe 6 is connected with the lower part of the drilling fluid conical tank 1, and the low end of the cleaning and conveying pipe is connected with the collecting tank 9. The sewage pump 8 is positioned in the collecting tank 9, one end of the sewage pipe 2 is connected with the sewage pump 8, and the other end of the sewage pipe extends into the upper part of the drilling fluid conical tank 1.

The drilling fluid cone 1 is typically a cone and is placed on a base, which is level with the ground 10. The distance between the collecting tank 9 and the drilling fluid conical tank 1 is set according to the requirement, and is generally about 150 cm. It will be appreciated that the cleanup pipe 6 is in a closed position when there is no need to clean mud in the drilling fluid cone 1. When the mud sand in the drilling fluid conical tank 1 is accumulated to a certain degree and needs to be cleaned, the solid control circulation process of the drilling fluid is suspended, the pump on the solid control circulation pipeline is used for pumping out the mud in the drilling fluid conical tank 1, then the corresponding valve is opened to ensure that the cleaning and conveying pipe 6 is unblocked, the sewage pump 8 is started to pump the upper sewage in the collecting tank 9, the sewage falls down after reaching the upper part of the drilling fluid conical tank 1 along the sewage pipe 2, the mud sand is flushed into the cleaning and conveying pipe 6, and finally the mud sand flows into the collecting tank 9. Therefore, the utility model provides a sand removal device can reduce sand removal intensity of labour, keeps the scene clean, moreover, has accomplished the silt particle collection when sand removal, can facilitate for drilling discarded object innocent treatment on next step.

In order to improve the impact force of sewage on the silt, in this embodiment, the end of the sewage pipe 2 far away from the sewage pump 8 is connected with a high-pressure nozzle. To facilitate the arrangement of the sewage pipe 2, the sewage pipe 2 is typically a high pressure hose, such as a steel wire-wound PVC hose.

In specific practical application, clear defeated pipe 6 can be metal pipe or PPR pipe, in order to reduce the silt particle to the inner wall wearing and tearing, clear defeated pipe 6 is the wear-resisting coating of mirror surface of interior cladding usually. As shown in figure 1, in order to facilitate the installation of the cleaning and conveying pipe 6, a first valve 4 can be arranged on a sand cleaning valve of the drilling fluid conical tank 1, the cleaning and conveying pipe 6 and the first valve 4 are connected through a flexible joint 5, and a second valve 7 is arranged on the side surface of the collecting tank 9 and is connected with the cleaning and conveying pipe 6 through a flange.

In order to intensively treat the drill cuttings screened by the vibrating screen, the sand cleaning device of the embodiment further comprises a guide pipe 3 which is obliquely arranged, the high end of the guide pipe 3 is connected with a slag discharge port of the vibrating screen, and the low end of the guide pipe 3 is connected with a slag inlet at the top of the collecting tank 9. In order to make the drill cuttings pass through the flow guide pipe 3 more smoothly, a sewage nozzle may be provided at a high-end entrance of the flow guide pipe 3, and the sewage nozzle may be used to spray water into the flow guide pipe 3 for flushing.

In order to facilitate the discharge of the waste liquid in the collecting tank 9, the sand cleaning device of the present embodiment further includes a delivery pump (not shown in the figure) connected to the collecting tank 9 through a pipeline, and specifically, the delivery pump may be a screw-type delivery pump. The delivery pump and the collecting tank 9 are usually fixed on the same prying seat, so that the whole transfer can be realized, and the dismounting workload in the transfer process is reduced. In order to facilitate the pumping of the waste liquid from the collecting tank 9 by the transfer pump, a stirrer may be provided in the collecting tank 9, and the waste liquid is stirred by the stirrer before pumping.

The utility model also provides a drilling fluid purification treatment system, this drilling fluid purification treatment system include the sand removal device that above-mentioned embodiment disclosed. Since the sand removal device disclosed in the above embodiment has the above technical effects, the drilling fluid purification treatment system having the sand removal device also has the above technical effects, and details are not described herein again.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a sand removal device, matches in drilling fluid conical tank which characterized in that includes:

a collection tank located alongside the drilling fluid conical tank;

a sump pump located within the collection tank;

one end of the sewage pipe is connected with the sewage pump, and the other end of the sewage pipe extends into the upper part of the drilling fluid conical tank; and the cleaning and conveying pipe is obliquely arranged, the high end of the cleaning and conveying pipe is connected with the lower part of the drilling fluid conical tank, and the low end of the cleaning and conveying pipe is connected with the collecting tank.

2. A sand cleaning device according to claim 1, further comprising a flow guide pipe arranged obliquely, wherein the high end of the flow guide pipe is connected with a slag discharge port of the vibrating screen, and the low end of the flow guide pipe is connected with a slag inlet at the top of the collecting tank.

3. A sand cleaning device as claimed in claim 2, wherein a sewage nozzle is provided at the inlet of the high end of the draft tube for spraying water into the draft tube to wash.

4. A sand removal device as claimed in claim 1, wherein a high pressure jet is connected to the end of the sewer remote from the sewage pump.

5. A sand cleaning device according to claim 4, wherein the sewer pipe is a high pressure hose.

6. A sand cleaning device according to claim 1, wherein the cleaning and conveying pipe is a metal pipe internally coated with a mirror wear-resistant coating or a PPR pipe internally coated with a mirror wear-resistant coating.

7. A sand cleaning device according to any one of claims 1 to 6, further comprising a transfer pump connected to the collection tank via a pipeline for draining waste liquid from the collection tank.

8. A sand removal device as claimed in claim 7, wherein an agitator is provided within the collection tank.

9. A sand removal device as claimed in claim 8, further comprising a pry seat, the delivery pump and the collection tank being secured to the pry seat.

10. A drilling fluid purification treatment system, comprising the sand removal device according to any one of claims 1 to 9.

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