CN210876607U - Shaft simulation cleaning device - Google Patents
Shaft simulation cleaning device Download PDFInfo
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- CN210876607U CN210876607U CN201921764813.2U CN201921764813U CN210876607U CN 210876607 U CN210876607 U CN 210876607U CN 201921764813 U CN201921764813 U CN 201921764813U CN 210876607 U CN210876607 U CN 210876607U
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Abstract
The utility model discloses a pit shaft simulation belt cleaning device belongs to oil gas well analogue means field, and this application includes outer barrel, and outer barrel includes: the end surface of the first end is provided with an interface and an outlet; a second end, the second end being closed; interior body, the equal opening in both ends of interior body, it is internal that the urceolus is located to fixed cover of interior body dismantled and assembled, and interior body includes: the end surface of the first side is attached to the inner end surface of the first end, and the outlet is positioned in the end surface of the first side on the inner end surface of the first end; the second side extends into the outer cylinder body, and a gap is formed between the end face of the second side and the inner end face of the second end of the outer cylinder body; the constant-temperature circulating system is arranged on the outer cylinder and used for keeping the outer cylinder at a first temperature; wherein, an annular chamber is limited between the inner tube body and the outer tube body, and the interface is communicated with the annular chamber. The device adopts the mode that the shaft is static and the cleaning fluid flows, and can accurately simulate the shaft cleaning process.
Description
Technical Field
The utility model belongs to oil gas well analogue means field, concretely relates to pit shaft simulation belt cleaning device.
Background
In the field of existing oil and gas wells, the underground state can not be directly observed generally, and a shaft of the oil and gas well always has a pipe column scaling phenomenon in oil and gas exploitation and needs to be cleaned. In the prior art, a cleaning agent is used for cleaning a shaft, and each newly developed cleaning agent can be put into a well for use after being subjected to an above-ground simulation test. However, the cleaning effect of the existing inspection well cleaning agent is usually a static rotation method, namely a method of standing the cleaning liquid and rotating the cleaning wall. However, the actual downhole cleaning process is a working mode with a static cleaning wall and a circulating cleaning solution, so that the existing testing device cannot provide effective test data support for the actual wellbore cleaning effect. There is a need for a wellbore simulation cleaning device that conforms to downhole practices.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems in the prior art, embodiments of the present application provide a wellbore simulation cleaning device, which can accurately simulate a wellbore cleaning process by using a manner that a wellbore is stationary and a cleaning liquid flows.
In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:
in a first aspect, embodiments of the present application provide a wellbore simulation cleaning device, including:
an outer barrel, the outer barrel includes:
the end surface of the first end is provided with an interface and an outlet;
a second end, the second end being closed;
interior body, the both ends of interior body are all opened, interior body detachably fixed cover locate the urceolus is internal, just interior body includes:
the end surface of the first side is attached to the inner end surface of the first end, the inner end surface of the first end is provided with the outlet, and the outlet is positioned in the end surface of the first side;
the second side extends into the outer cylinder body, and a gap is formed between the end face of the second side and the inner end face of the second end of the outer cylinder body; and
the constant-temperature circulating system is arranged on the outer cylinder and used for keeping the outer cylinder at a first temperature;
wherein the inner tube and the outer tube define an annular chamber therebetween, and the port communicates with the annular chamber.
Optionally, the number of the interfaces is at least two, and at least two of the interfaces are symmetrically arranged.
Optionally, the ports are configured as an annular array, and the axis of the annular array is collinear with the axis of the outer cylinder.
Optionally, the outer cylinder includes:
the device comprises a cylinder body, a first valve and a second valve, wherein one end of the cylinder body is closed, and the other end of the cylinder body is provided with a first opening;
the cover body is detachably fixed in the first opening, and the outlet and the interface are both arranged on the end surface of the cover body;
wherein, the inner pipe body is fixedly arranged on the cover body.
Optionally, the cover body is connected to the barrel body through threads.
Optionally, the constant temperature circulation system includes:
the heat preservation cover, the fixed cover of heat preservation cover is located the radial outside of outer barrel, the heat preservation cover with an airtight cavity is injectd to outer barrel, just the heat preservation cover includes blind end and open end, first heat preservation interface has been seted up to the blind end, first heat preservation interface lets in constant temperature liquid airtight cavity, the heat preservation liquid export has been seted up to the open end, the heat preservation liquid export will constant temperature liquid discharges airtight cavity.
Optionally, the constant temperature circulation system further comprises a constant temperature water bath, and the constant temperature water bath is respectively communicated with the first heat preservation interface and the heat preservation liquid outlet through pipelines.
Optionally, the outer cylinder, the inner cylinder and the thermal insulation sleeve are all made of transparent materials.
Optionally, the washing machine further comprises a pump body, wherein the pump body is communicated with the interface through a second pipeline, and the washing liquid is introduced into the outer cylinder.
Optionally, the pump body is communicated with the outlet through a third pipeline.
Compared with the prior art, the shaft simulation cleaning device provided by the embodiment of the application has the advantages that the inner pipe body is sleeved in the outer pipe body, one end of the inner pipe body is detachably and fixedly connected with the outer pipe body, a channel is formed, and the channel is formed by sequentially communicating an interface, an annular strong cavity, the inner pipe body and an outlet. During testing, the cleaning agent is introduced into the outer cylinder from the connector, then only enters the annular chamber, flows down along the pipe walls of the inner cylinder and the outer cylinder, reaches the inner end face of the second end at the bottom of the outer cylinder, is blocked to flow back to the inner cylinder, then flows back under the push of the subsequent cleaning agent, flows to the outlet along the inner pipe wall of the inner cylinder and flows out along the outlet. The simulation device simulates the actual condition of the underground well in a cleaning process accurately, and can provide more effective data support and test support for the research and development of shaft cleaning agents. And meanwhile, when the outer cylinder body and the inner cylinder body which are made of transparent materials are adopted, the shaft cleaning process can be visually simulated, so that the research and development of cleaning agents are further supported.
In addition, the pit shaft simulation belt cleaning device that this application embodiment provided lets in through a plurality of interfaces and washs the effect that the medicament reaches and makes the even entering of medicament. Furthermore, the interfaces can be symmetrically arranged or even arranged in an annular array, so that the cleaning agent is more uniformly introduced into the annular chamber, and the actual process of cleaning the underground well by the cleaning agent is better fitted.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and the accompanying drawings, which specify the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the present invention are not so limited in scope. The embodiments of the invention include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
It should be emphasized that the term "comprises/comprising" when used herein, is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
in the figure, 1-outer cylinder, 101-connector, 102-outlet, 103-cover, 104-cylinder, 2-inner cylinder, 3-pump, 4-constant temperature circulating system, 401-insulating sleeve, 402-insulating liquid outlet.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The embodiment of the application provides a shaft simulation belt cleaning device, this shaft simulation belt cleaning device establishes a simulation shaft through the mutual cover of both ends open-ended interior body 2 and one end confined outer barrel 1, and the washing medicament that this shaft lets in the annular chamber of injecing between outer barrel 1 and the interior body 2 after getting into from interface 101 indoor, wash the even flow down of pipe wall along interior body 2 of pipe, just get into interior body 2 and then the refluence after 1 bottom of outer barrel, discharge from export 102 at last, thereby relatively actual simulation use the washing process of washing medicament washing shaft in the pit.
The medicament herein is generally referred to as a liquid medicament.
The technical solution of the present application is further described below with reference to some preferred embodiments.
As shown in fig. 1, a wellbore simulation cleaning apparatus includes: outer barrel 1, outer barrel 1 includes: the end face of the first end is provided with a port 101 and an outlet 102. And a second end, the second end being closed.
And the constant-temperature circulating system 4 is arranged on the outer barrel 1 and used for keeping the outer barrel 1 at a first temperature.
Wherein, an annular chamber is defined between the inner tube 2 and the outer tube 1, and the port 101 is communicated with the annular chamber.
In particular, the wellbore simulation device is used in a laboratory for visually simulating a cleaning process of an underground wellbore. The outer cylinder body 1 and the inner cylinder body 2 of the device are both made of transparent materials, and are made of organic glass optionally. In the experiment, the outer cylinder 1 can be vertically arranged for simulating a vertical well. It may also be arranged at an incline for simulating a directional well. That is, the outer cylinder 1 can be supported and adjusted in its direction using the bracket.
Specifically, the outer cylinder 1 is used for simulating a casing pipe, and the inner cylinder 2 sleeved in the outer cylinder 1 is used for simulating an oil pipe. Therefore, the outer cylinder 1 is open at one end and closed at the other end, i.e. the outer cylinder 1 comprises a first end and a second end. Wherein the opening on the first end comprises an interface 101 for accessing the cleaning agent and an outlet 102 for discharging the cleaning agent.
And interior body 2 cover is located in outer barrel 1, and the first side snap-on of interior body 2 is on the terminal surface of first end, and the terminal surface of first side is direct to be laminated with the terminal surface of first end. The inner tube 2 and the outer tube 1 then define an annular chamber between them, the top of which communicates with the mouthpiece 101 and not with the outlet 102. A gap exists between the end surface of the second side of the inner pipe body 2 and the inner end surface of the second end, namely, the inner pipe body 2 is communicated with the annular chamber through the opening of the second side of the inner pipe body.
Meanwhile, the first side of the inner tube 2 is attached to the inner end surface of the first end, and the outlet 102 is located in the inner circle of the first side, that is, the outlet 102 is only directly communicated with the inner tube 2, and the cleaning agent can only flow and be discharged from the circulator cavity, the inner tube 2 and the outlet 102 in sequence.
Alternatively, the inner tube 2 may be screwed onto the first end by means of a thread, or may be fixed directly to the first end by means of welding, or may be fixed to the first end by means of a flange or the like.
The inner tube 2 is detachably fixed in the outer tube 1. The purpose is for before the simulation experiment, scribble filth on the terminal surface of the second side of inner tube body 2 and near lateral wall to the simulation pit shaft dirt adheres to the condition.
Meanwhile, the constant temperature circulation system 4 is used to keep the outer cylinder 1 at a constant working temperature during the test.
Specifically, the simulation device provided by this embodiment firstly coats the dirt on the corresponding position of the inner tube body 2, and then fixedly installs the inner tube body 2 in the outer tube body 1. During testing, the cleaning agent is introduced into the outer cylinder 1 from the connector 101, then only enters the annular chamber, flows down along the pipe walls of the inner cylinder 2 and the outer cylinder 1, reaches the second end face of the bottom of the outer cylinder 1, is blocked to flow back into the inner cylinder 2, then flows back under the push of the subsequently introduced cleaning agent, flows towards the outlet 102 along the inner pipe wall of the inner cylinder 2, and flows out along the outlet 102. The simulation device simulates the actual condition of the underground well in a cleaning process accurately, and can provide more effective data support and test support for the research and development of shaft cleaning agents. When adopting outer barrel 1 and interior body 2 of transparent material simultaneously, can also simulate the pit shaft cleaning process visually to further support the research and development of cleaning agent.
In some embodiments, the interfaces 101 include at least two, in which case the plurality of interfaces 101 are arranged symmetrically.
The mouthpiece 101 is used to pass cleaning agent into the annular chamber. In practical downhole environments, however, because the wellbore is long, the cleaning agent will uniformly reach the bottom of the tubing after flowing down the wellbore wall for a long distance. And analogue means is limited to experimental environment, and the length of outer barrel 1 and interior body 2 is all shorter, and consequently, interface 101 can set up at least two, lets in through a plurality of interfaces 101 and washs the effect that the medicament reached and make the even entering of medicament. Further, the ports 101 may be symmetrically arranged so that the passage of cleaning agent into the annular chamber is more uniform.
In some embodiments, the ports 101 are annularly configured as an annular array, and the axis of the annular array is collinear with the axis of the outer barrel 1. Make the washing medicament let in the annular chamber indoor more even promptly, laminate actual environment in the pit more.
Specifically, as shown in fig. 1, in some embodiments, the outer cylinder 1 includes a cylinder 104, one end of the cylinder 104 is closed, and the other end of the cylinder 104 has a first opening.
A cover 103, wherein the cover 103 is detachably fixed in the first opening, and the outlet 102 and the interface 101 are both opened on an end surface of the cover 103.
Wherein, the inner tube 2 is fixedly arranged on the cover body 103.
In this embodiment, the detachable connection of the inner tube 2 and the outer tube 1 is achieved by disassembling the outer tube 1. To facilitate the disassembly and assembly of the present simulation apparatus, as well as the post-cleaning and maintenance, the outer cylinder 1 is constructed in two parts, a cylinder 104 and a cover 103. One end of the cylinder 104 is closed, and at this time, the closed end of the cylinder 104 is the second end, and the open end thereof is the first end. The first end is removably secured to the cover 103 by threads, snaps, flanges, or the like. The cover body 103 can be constructed in a corresponding gland form, and can also be constructed in a pipe plug structure form. Preferably a threaded connection. At this time, the inner tube 2 may be directly welded to the cylinder 104, thereby achieving the detachable connection of the inner tube 2 and the cylinder 104, and at this time, the inner tube 2 and the cap 103 are structurally integrated. Therefore, when using the present device, the inner tube 2 is inserted into the cylinder 104, and then the cap 103 is tightened.
Optionally, the connecting portion between the cover 103 and the barrel 104 may be sealed by a sealing member such as an O-ring.
In some embodiments, in order to make the temperature environment of the outer cylinder 1 conform to the downhole temperature, a constant temperature circulation system 4 is used to maintain the temperature of the outer cylinder 1 constant. Specifically, the constant temperature circulation system 4 includes:
The heat insulation sleeve 401 is a main functional component of the constant temperature circulation system 4, and realizes heat insulation of the outer cylinder 1 through constant temperature liquid continuously circulating and flowing in the heat insulation sleeve.
Specifically, the thermal insulation sleeve 401 can also be made of organic glass material. The insulating sleeve 401 is also a tubular member with one end open and the other end closed. The fixed connection between the thermal insulation sleeve 401 and the outer cylinder 1 can be realized by a sealing rubber piece 5. As shown in fig. 1, the sealing rubber member 5 is a rubber gasket, which is inserted into the sealed chamber between the thermal insulation sleeve 401 and the outer cylinder 1 and is in a compression deformation state, so that the outer cylinder 1 is fixed relative to the thermal insulation sleeve 401.
In addition, a shoulder may be formed on the outer side wall of the outer cylinder 1, and an external thread may be formed on the side wall of the shoulder in the circumferential direction to connect the thermal insulation sleeve 401 by a thread.
It is also possible to construct a shoulder on the outer sidewall portion of the outer cylinder 1, construct a bolt hole group on the sidewall of the shoulder, and then connect the thermal insulation cover 401 through a flange structure.
The side wall of the opening end of the heat insulation sleeve 401 is provided with a first heat insulation interface for introducing constant temperature liquid. Constant temperature liquid flows to the closed end along the pipe walls of the heat-insulating sleeve 401 and the outer cylinder 1 after being introduced from the first heat-insulating connector, and then flows out from the heat-insulating liquid outlet 402 of the closed end. The insulating liquid outlet 402 may be disposed on an end surface of the second end or may be formed on a side wall of the second end.
In some embodiments, the constant temperature circulation system 4 further includes a constant temperature water bath, and the constant temperature water bath is respectively communicated with the first heat preservation interface and the heat preservation liquid outlet 402 through pipelines. The thermostatic water bath is a mature device in the prior art, and a person skilled in the art knows how to implement the thermostatic water bath, so the thermostatic water bath is not described in detail here. The thermostatic water bath is used for heating and maintaining the thermostatic liquid at a set working temperature, then pumping the thermostatic liquid into the closed cavity through the pipeline and the first heat preservation interface, and then receiving the thermostatic liquid discharged from the heat preservation liquid outlet 402, thereby forming a thermostatic circulation system 4.
In some embodiments, the cleaning device further comprises a pump body 3, wherein the pump body 3 is communicated with the interface 101 through a second pipeline, and the cleaning liquid is introduced into the outer cylinder body 1. The pump body 3 may be a pumped water tank or other device. The pump body 3 pumps cleaning agent from a container, such as a water tank, through the second line, port 101 into the annular chamber.
In addition, optionally, because this device is analogue means, in order to avoid polluting the environment from the garbled flow of export 102 exhaust washing medicament during the simulation experiment, can be through the third pipeline with export 102 and pump body 3 intercommunication to retrieve the washing medicament, avoid polluting the experimental environment. Simultaneously, because the length of analogue means's outer barrel 1 and interior body 2 is limited, the single simulation effect is not good, adopts washing medicament circulation washing, can effectively look over the cleaning performance, practices thrift simultaneously and washs the medicament.
In a specific embodiment, as shown in fig. 1, the operation is as follows:
the thermostatic water bath is opened to keep the device at the desired working temperature, and the cap body 103 and the inner tube body 2 fixed to the cap body 103 are taken out. Dirt is smeared at the bottom of the inner tube body 2, the smearing length can be determined according to test variables, and the cover body 103 is covered back to the tube body after smearing.
The water tank with the pump is connected, liquid cleaning agent is injected according to the required speed, and the cleaning agent flows into the water tank with the pump from the interface 101 and then returns to the water tank with the pump through the annular chamber, the inner pipe body 2, the outlet 102 and the third pipeline in sequence. And circulating and timing to check the cleaning effect.
It is understood that all articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional.
A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A wellbore simulation cleaning device, comprising:
an outer barrel, the outer barrel includes:
the end surface of the first end is provided with an interface and an outlet;
a second end, the second end being closed;
interior body, the both ends of interior body are all opened, interior body detachably fixed cover locate the urceolus is internal, just interior body includes:
the end surface of the first side is attached to the inner end surface of the first end, the inner end surface of the first end is provided with the outlet, and the outlet is positioned in the end surface of the first side;
the second side extends into the outer cylinder body, and a gap is formed between the end face of the second side and the inner end face of the second end of the outer cylinder body; and
the constant-temperature circulating system is arranged on the outer cylinder and used for keeping the outer cylinder at a first temperature;
wherein the inner tube and the outer tube define an annular chamber therebetween, and the port communicates with the annular chamber.
2. The wellbore simulation washing apparatus of claim 1, wherein the at least two ports are symmetrically disposed.
3. The wellbore simulation washing apparatus of claim 2, wherein all of the ports are configured as an annular array, and wherein an axis of the annular array is collinear with an axis of the outer cylinder.
4. The wellbore simulation washing apparatus of claim 1, wherein the outer cylinder comprises:
the device comprises a cylinder body, a first valve and a second valve, wherein one end of the cylinder body is closed, and the other end of the cylinder body is provided with a first opening;
the cover body is detachably fixed in the first opening, and the outlet and the interface are both arranged on the end surface of the cover body;
wherein, the inner pipe body is fixedly arranged on the cover body.
5. The wellbore simulation washing apparatus of claim 4, wherein: the cover body is connected to the barrel body through threads.
6. The wellbore simulation washing apparatus of claim 1, wherein the constant temperature circulation system comprises:
the heat preservation cover, the fixed cover of heat preservation cover is located the radial outside of outer barrel, the heat preservation cover with an airtight cavity is injectd to outer barrel, just the heat preservation cover includes blind end and open end, first heat preservation interface has been seted up to the blind end, first heat preservation interface lets in constant temperature liquid airtight cavity, the heat preservation liquid export has been seted up to the open end, the heat preservation liquid export will constant temperature liquid discharges airtight cavity.
7. The wellbore simulation cleaning device according to claim 6, wherein the constant temperature circulation system further comprises a constant temperature water bath, and the constant temperature water bath is respectively communicated with the first heat preservation interface and the heat preservation liquid outlet through pipelines.
8. The wellbore simulation cleaning device of claim 6, wherein the outer cylinder, the inner cylinder and the thermal insulation sleeve are made of transparent materials.
9. The wellbore simulation cleaning device of claim 1, further comprising a pump body, wherein the pump body is communicated with the interface through a second pipeline, and a cleaning liquid is introduced into the outer cylinder.
10. The wellbore simulation washing apparatus of claim 9, wherein the pump body is in communication with the outlet via a third conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921764813.2U CN210876607U (en) | 2019-10-18 | 2019-10-18 | Shaft simulation cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921764813.2U CN210876607U (en) | 2019-10-18 | 2019-10-18 | Shaft simulation cleaning device |
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| Publication Number | Publication Date |
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| CN210876607U true CN210876607U (en) | 2020-06-30 |
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| CN201921764813.2U Active CN210876607U (en) | 2019-10-18 | 2019-10-18 | Shaft simulation cleaning device |
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| CN (1) | CN210876607U (en) |
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