CN214403495U - Coring unit, coring tool and core coring tool - Google Patents
Coring unit, coring tool and core coring tool Download PDFInfo
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- CN214403495U CN214403495U CN202120052801.8U CN202120052801U CN214403495U CN 214403495 U CN214403495 U CN 214403495U CN 202120052801 U CN202120052801 U CN 202120052801U CN 214403495 U CN214403495 U CN 214403495U
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Abstract
The disclosure relates to a coring unit, a coring tool and a core coring tool, relates to the technical field of machinery, and particularly relates to the technical field of petroleum drilling machinery. Wherein, the coring unit, characterized by including: a coring mechanism; the core-ejecting mechanism is connected with a mechanism where a body to be ejected is located, a propelling mechanism is arranged at one end or the outer side of a core-ejecting rod in the core-ejecting mechanism, and one end of the core-ejecting rod in the core-ejecting mechanism can be in contact with the body to be ejected; the propelling mechanism is used for driving the core discharging rod in the core discharging mechanism to move so as to finish the core discharging operation of the body to be discharged. The embodiment of the disclosure can realize that the body to be centrized is taken out of the mechanism.
Description
Technical Field
The disclosure relates to the technical field of machinery, in particular to the technical field of petroleum drilling machinery, and particularly relates to a coring unit, a coring tool and a core coring tool.
Background
At present, a special coring tool is not available for drilling closed coring, a coring mechanism is fixed on a drill rod bracket in advance during coring, then oil pipes are lifted by a plurality of drillers and inserted into an inner cylinder from the upper part of the tool, and the cores are ejected out in a grading way by resultant force. However, core difficulties and even inner cylinder core blockage sometimes occur due to loose and broken cores, cracks, mud rock expansion and the like. The field adoption method in this case: firstly, the phenomenon that the manual impact on an oil pipe is increased, or a sledge hammer strikes an outer cylinder and a tool is hung on a drill floor to impact the tool so as to loosen a core is usually not obvious in effect, the breaking of the core is possibly aggravated, the core blockage degree is aggravated, even the inner cylinder is finally cut, the coring cost is increased, and a large amount of time is consumed. And secondly, impacting an oil pipe by using equipment such as a field tractor and the like to push the core. The core cannot be protected, but the core is damaged, so that the complete core is crushed, and the loose and fragile core is changed into powder. The complete continuity of geological data is damaged, and the yield and the sealing rate of the rock core are reduced. Brings great difficulty to the coring work of field coring engineers, geological logging and research institutes. And thirdly, the oil pipe is pulled by using the chain block, and the oil pipe and the chain block are not fixed easily, so that the time cannot be saved, and the oil pipe is very clumsy. Encountering such a complex situation greatly reduces the working efficiency.
Disclosure of Invention
The present disclosure provides a coring unit, a coring tool and a core coring tool to solve the problem that a core body to be cored is difficult to take out from a mechanism.
According to an aspect of the present disclosure, there is provided an eccentric unit comprising: a coring mechanism;
the core-ejecting mechanism is connected with a mechanism where a body to be ejected is located, a propelling mechanism is arranged at one end or the outer side of a core-ejecting rod in the core-ejecting mechanism, and one end of the core-ejecting rod in the core-ejecting mechanism can be in contact with the body to be ejected;
the propelling mechanism is used for driving the core discharging rod in the core discharging mechanism to move so as to finish the core discharging operation of the body to be discharged.
Preferably, the propulsion mechanism comprises: a propeller and slip mechanism;
the slip mechanism is arranged between the propeller and the coring mechanism.
Preferably, the pusher is at one end or outside of the mandrel, with the slip mechanism between the pusher and the mandrel.
Preferably, the outer groove of the coring mechanism;
the groove is sleeved with the propeller, the inner wall of the propeller barrel is a conical surface with a shoulder, and the slip mechanism with a groove is sleeved in the conical surface.
Preferably, the propulsion mechanism further comprises: bearings and/or sliding mechanisms;
one side of the propeller is provided with a bearing which is sleeved outside the core-out mechanism, and the other side of the propeller is provided with a sliding mechanism which is sleeved outside the core-out mechanism;
the sliding mechanism moves according to the acting force direction of the bearing or the propeller so as to drive a core outlet rod in the core outlet mechanism to move and complete the core outlet operation of the body to be cored;
and/or the presence of a gas in the interior of the container,
the slip mechanism is a one-way slip.
Preferably, the propulsion mechanism further comprises: protecting the connecting piece;
one end of the connecting piece is connected with the propelling mechanism, the other end of the connecting piece is connected with one end of the core discharging mechanism, and the other end of the core discharging mechanism is connected with the core body to be discharged.
Preferably, one end of the protection connecting piece is provided with a groove, the groove is connected with the propelling mechanism, and the outer side of the other end of the protection connecting piece is connected with the core outlet mechanism.
Preferably, the protective connecting piece is a protective connecting ring.
According to an aspect of the present disclosure, there is provided a coring tool, comprising: according to the above coring unit, one end of the propelling mechanism is connected with the coring mechanism, and the other end of the propelling mechanism is connected with the driving mechanism;
the driving mechanism is used for providing propelling force for the propelling mechanism.
Preferably, one side of the driving mechanism is the propelling mechanism, and the other side of the driving mechanism is provided with a fixing mechanism;
the fixing mechanism is used for fixing the driving mechanism.
Preferably, the fixing mechanism includes: a nut;
the nut is fixed on the outer side of the core rod and is connected with the other side of the driving mechanism in a jacking mode.
Preferably, the fixing mechanism further includes: fixing a sleeve;
one side of the nut is the driving mechanism, and the other side of the nut is the fixing sleeve.
According to an aspect of the present disclosure, there is provided a core coring tool, comprising: a coring unit as described above, or a coring tool as described above;
the core body to be ejected is a core, the mechanism where the core body to be ejected is located is an inner cylinder, the core is located in the inner cylinder, and the ejection rod is an oil pipe.
In the embodiment of the disclosure, a coring unit, a coring tool and a core coring tool are provided to solve the problem that a to-be-cored body is difficult to take out from a mechanism, and particularly to solve the problem that closed coring and coring in a drilling well are difficult.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.
Fig. 1 shows a full-section schematic structure diagram of a coring unit, a coring tool, and a core coring tool according to an embodiment of the disclosure.
Fig. 2 illustrates a schematic view of the drive mechanism of fig. 1 in accordance with an embodiment of the present disclosure.
Detailed Description
Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the term "at least one" herein means any one of a plurality or any combination of at least two of a plurality, for example, including at least one of A, B, C, and may mean including any one or more elements selected from the group consisting of A, B and C.
Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.
Fig. 1 shows a full-section schematic structure diagram of a coring unit, a coring tool, and a core coring tool according to an embodiment of the disclosure. A coring unit, comprising: a coring mechanism 10; the core ejecting mechanism 10 is connected with a mechanism where a body to be ejected is located, a propelling mechanism is arranged at one end or the outer side of a core ejecting rod in the core ejecting mechanism 10, and one end of the core ejecting rod in the core ejecting mechanism 10 can be in contact with the body to be ejected; the propelling mechanism is used for driving the core discharging rod in the core discharging mechanism to move so as to finish the core discharging operation of the body to be discharged.
Specifically, as the core-ejecting mechanism 10 is connected with the mechanism where the body to be ejected is located, the connection mode can be threaded connection or clamping; because the mechanism where the body to be ejected is located is immobile relative to the ejecting mechanism 10, when the pushing mechanism drives the ejecting rod in the ejecting mechanism 10 to move towards the direction of the body to be ejected, the body to be ejected can be taken out from the mechanism where the body to be ejected is located, and ejecting operation of the body to be ejected is completed.
In the present disclosure, a core discharging rod channel is provided in the core discharging mechanism 10, the core discharging rod passes through the core discharging rod channel and can contact with the body to be discharged, a clamping mechanism is provided at one end of the core discharging mechanism 10, the clamping mechanism is used for being connected with the mechanism where the body to be discharged is located, and a pushing connection mechanism is provided at the other end of the core discharging mechanism 10, and the pushing connection mechanism is connected with the pushing mechanism.
In the present disclosure, the propulsion mechanism includes: a propeller 7 and a slip mechanism; the propeller 7 is arranged at one end or the outer side of the ejector pin, and the slip mechanism is arranged between the propeller 7 and the ejector pin.
In the embodiment of the present disclosure, the propeller 7 may be a cylindrical structure, and is sleeved outside the ejector pin.
In the present disclosure, the slip mechanism is sleeved outside the core-out mechanism 10, and the propeller 7 is outside the slip mechanism.
In the present disclosure, the outer grooves of the coring mechanism 10; the groove is sleeved with the propeller 7, the inner wall of the propeller 7 is a conical surface with a shoulder, and the slip mechanism with a groove is sleeved in the conical surface. Wherein, the slip mechanism is a one-way slip 8.
In the present disclosure, the propulsion mechanism further includes: bearings and/or sliding mechanisms; one side of the propeller 7 is provided with a bearing sleeved outside the core-out mechanism 10, and the other side of the propeller 7 is provided with a sliding mechanism sleeved outside the core-out mechanism 10; the sliding mechanism moves according to the direction of the acting force of the bearing or the propeller 7 so as to drive the core-ejecting rod in the core-ejecting mechanism 10 to move, and the core-ejecting operation of the body to be ejected is completed.
In the embodiment of the present disclosure, the bearing may be a power steering bearing 9, and the slide mechanism may be a screw cylinder 3. Specifically, the screw tube 3 is connected to the outside of the spindle by a lead screw, and the propeller 7 and the bearing (steering assist bearing 9) are provided outside the screw tube 3.
In the present disclosure, the 10 propulsion mechanism further comprises: protecting the connecting piece; one end of the connecting piece is connected with the propelling mechanism, the other end of the connecting piece is connected with one end of the core discharging mechanism 10, and the other end of the core discharging mechanism 10 is connected with the core body to be discharged. The protection connecting piece can be a protection connecting ring 2, and the protection connecting ring 2 is sleeved on the outer side of the core rod.
In the present disclosure, one end of the protection connecting piece has a groove, the groove is connected with the propelling mechanism, and the outer side of the other end of the protection connecting piece is connected with the core discharging mechanism 10.
In the embodiment of the present disclosure, the groove at one end of the protection connecting ring 2 is in threaded connection with one end of the screw cylinder 3, the outer side of the other end of the protection connecting ring 2 is connected with the inner side of the coring mechanism 10, one end of the coring mechanism 10 is provided with a clamping mechanism, the clamping mechanism is used for being connected with a mechanism where a body to be cored is located, the other end of the coring mechanism 10 is provided with a propelling connection mechanism, and the propelling connection mechanism is connected with the propelling mechanism through the outer side of the other end of the protection connecting ring 2. Meanwhile, the other end of the screw cylinder 3 (screw) is provided with a one-way slip 8, and the outer side of the one-way slip is provided with a propeller 7.
The present disclosure also provides a coring tool, comprising: as the above-mentioned coring unit, one end of the propelling mechanism is connected with the coring mechanism 10, and the other end of the propelling mechanism is connected with the driving mechanism;
the driving mechanism is used for providing propelling force for the propelling mechanism.
In the present disclosure, one side of the driving mechanism is the propelling mechanism, and the other side of the driving mechanism is provided with a fixing mechanism; the fixing mechanism is used for fixing the driving mechanism. The driving mechanism can be a steering wheel 4, and the specific structure can be shown in detail in fig. 2.
In the embodiment of the present disclosure, the fixing mechanism and the driving mechanism are both mounted on the outer side of the screw cylinder 3 (screw).
In an embodiment of the present disclosure, the fixing mechanism includes: a nut 6; the nut 6 is fixed on the outer side of the core rod and is connected with the other side of the driving mechanism in a jacking mode.
In an embodiment of the present disclosure, the fixing mechanism further includes: a fixed sleeve 5; one side of the nut 6 is the driving mechanism, and the other side of the nut 6 is the fixing sleeve 5.
The present disclosure also provides a rock core coring tool, including: according to the above coring unit or the above coring tool, the body to be cored is the core 11, the body to be cored is the inner cylinder, the core 11 is located in the inner cylinder, and the coring rod is the oil pipe 1.
Fig. 2 illustrates a schematic view of the drive mechanism of fig. 1 in accordance with an embodiment of the present disclosure. The driving mechanism can be a steering wheel 4, a central hole of the steering wheel 4 is sleeved on the outer side of the ejector pin, the steering wheel 4 rotates on the screw cylinder 3, and axial thrust is generated to push the steering power-assisted bearing 9 and the propeller 7 which are connected with the steering power-assisted bearing to slide along a groove on the screw cylinder 3. The propeller 7 is clamped on the oil pipe 1 through a one-way slip 8 arranged in the propeller, and the one-way slip 8 is extruded through the inner conical surface of the propeller 7, so that the propeller and the oil pipe 1 are pushed to move axially in an interference fit mode, penetrate through the center of the coring mechanism 10 (coring mechanism) and are propped against the core 11 of the coring mechanism, and the core 11 is pushed to slide out of the coring mechanism 10.
In the embodiment of the disclosure, the steering wheel 4 (driving mechanism) can increase the moment arm by using an extension rod, and the thrust of the oil pipe 1 for pushing the core 11 is increased. If the core 11 is difficult to eject in the coring mechanism 10, the steering wheel 4 adopts an extension bar, the extension bar is pressed back and forth up and down to drive the propeller 7 to move forward to clamp the oil pipe 1, greater axial thrust is transmitted to the core 11 through the oil pipe 1, or the propeller 7 is driven to retreat to automatically loosen the oil pipe 1, and the propeller 7 can be driven to intermittently push the oil pipe 1 to eject the core 11 by up-and-down repeated movement.
Specifically, a screw rod cylinder 3 with two grooves in the axial direction is sleeved outside the oil pipe 1, the outer body of the screw rod cylinder 3 is a thread, one end of the screw rod cylinder 3 is grooved to the top, the groove of the screw rod barrel 3 is sleeved with a barrel of a propeller 7, the inner wall of the barrel of the propeller 7 is a conical surface with a shoulder, a one-way slip 8 with a slot is sleeved in the conical surface, the one-way slip 8 is sleeved on the oil pipe 1 in a clamping way, one side of the propeller barrel 7 is welded with a steering boosting bearing sleeve 9 sleeved on the groove of the screw rod barrel 3, the other side of the steering boosting bearing sleeve 9 is welded with a steering wheel 4 sleeved on the groove of the screw rod barrel 3, the end part of the screw cylinder 3 is sleeved with a fixed sleeve 5 matched with a groove of the screw cylinder, the outer part of the fixed sleeve 5 is sleeved with a screw cap 6 in threaded connection with the fixed sleeve, the other side of the screw cylinder 3 is in threaded connection with a protective connecting ring 2, the protective connecting ring 2 is in threaded connection with a coring mechanism 10 (coring mechanism), and the end part of the oil pipe 1 is propped against the end part of the rock core 11.
Specifically, the oil pipe 1 penetrates through the center of the tool and pushes against the sealing head, the fixing sleeve 5 is buckled at the tail end of the screw cylinder 3, the screw cap 6 is in threaded connection with the screw cylinder 3 and the tail end fixing sleeve 5 matched with the groove of the screw cylinder, and the steering wheel 4 is in threaded connection with the screw cylinder 3. The steering wheel 4, the boosting bearing sleeve 9 and the propeller 7 are welded together. The one-way slip 8 is arranged in the conical surface of the propeller 7, and the protective connecting ring 2 is in threaded connection with the end part of the coring mechanism 10.
The device is connected with an outer cylinder of a coring mechanism 10 (a coring mechanism) through a screw thread, and a driller pushes an oil pipe to core under normal conditions. When the core is difficult to be ejected, the steering wheel is rotated to generate forward thrust on the screw cylinder, so that the oil pipe is driven, the core is driven, and the core is ejected out of the inner cylinder uniformly. Time and labor are saved, and the rock core is protected.
In conclusion, the automatic core-pulling device is simple and reasonable in structure, convenient to assemble and use, time-saving, labor-saving, and capable of achieving rapid and continuous core pulling. Therefore, the unnecessary economic loss caused by the complex airtight coring and difficult coring is better solved, the working efficiency is improved, the airtight rate and the harvesting rate of the core are improved, the drilling cost is reduced, and the well building period is effectively shortened.
Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. A coring unit, comprising: a coring mechanism (10);
the core ejecting mechanism (10) is connected with a mechanism where a body to be ejected is located, a propelling mechanism is arranged at one end or the outer side of a core ejecting rod in the core ejecting mechanism (10), and one end of the core ejecting rod in the core ejecting mechanism (10) can be in contact with the body to be ejected;
the propelling mechanism is used for driving the core discharging rod in the core discharging mechanism (10) to move so as to finish the core discharging operation of the body to be discharged.
2. The coring unit of claim 1, wherein the advancement mechanism, comprises: a propeller (7) and a slip mechanism;
the propeller (7) is arranged at one end or the outer side of the core rod, and the slip mechanism is arranged between the propeller (7) and the core rod.
3. An eccentric unit according to claim 2, characterized in that the slip mechanism is sleeved outside the eccentric mechanism (10), outside which is the thruster (7).
4. A coring unit according to claim 3, wherein the outer groove of the coring mechanism (10);
the groove is sleeved with the propeller (7), the inner wall of the propeller (7) is a conical surface with a shoulder, and the slip mechanism with a groove is sleeved in the conical surface.
5. The coring unit of any one of claims 2-4, wherein the advancement mechanism, further comprises: bearings and/or sliding mechanisms;
one side of the propeller (7) is provided with a bearing sleeved on the outer side of the core outlet mechanism (10), and the other side of the propeller (7) is provided with a sliding mechanism sleeved on the outer side of the core outlet mechanism (10);
the sliding mechanism moves according to the direction of the acting force of the bearing or the propeller (7) to drive a core-ejecting rod in the core-ejecting mechanism (10) to move so as to finish the core-ejecting operation of the body to be ejected;
and/or the presence of a gas in the interior of the container,
the slip mechanism is a one-way slip (8).
6. The coring unit of any one of claims 1-4, wherein the advancement mechanism, further comprises: protecting the connecting piece;
one end of the connecting piece is connected with the propelling mechanism, the other end of the connecting piece is connected with one end of the core discharging mechanism (10), and the other end of the core discharging mechanism (10) is connected with the body to be discharged;
and/or the presence of a gas in the interior of the container,
the core-ejecting mechanism (10) is internally provided with a core-ejecting rod channel, and the core-ejecting rod can pass through the core-ejecting rod channel and be contacted with the body to be ejected;
one end of the core-ejecting mechanism (10) is provided with a clamping mechanism which is used for being connected with a mechanism where a body to be ejected is located;
the other end of the core outlet mechanism (10) is provided with a propelling connecting mechanism, and the propelling connecting mechanism is connected with the propelling mechanism.
7. The coring unit of claim 6, wherein one end of the protective connector has a groove, the groove is connected with the pushing mechanism, and the other end of the protective connector is connected with the coring mechanism (10) at the outer side.
8. A coring tool, comprising: the coring unit of any one of claims 1-7, wherein one end of the advancing mechanism is connected to the coring mechanism (10) and the other end of the advancing mechanism is connected to a drive mechanism;
the driving mechanism is used for providing propelling force for the propelling mechanism.
9. The coring tool of claim 8, wherein one side of the drive mechanism is the advancement mechanism and the other side of the drive mechanism has a securing mechanism;
the fixing mechanism is used for fixing the driving mechanism.
10. A core coring tool, comprising: the coring unit of any one of claims 1-7, or the coring tool of claim 8 or 9;
the core body to be ejected is a core (11), the mechanism where the core body to be ejected is located is an inner cylinder, the core (11) is located in the inner cylinder, and the ejection rod is an oil pipe (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120052801.8U CN214403495U (en) | 2021-01-08 | 2021-01-08 | Coring unit, coring tool and core coring tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120052801.8U CN214403495U (en) | 2021-01-08 | 2021-01-08 | Coring unit, coring tool and core coring tool |
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| CN214403495U true CN214403495U (en) | 2021-10-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396238A (en) * | 2022-01-26 | 2022-04-26 | 北京探矿工程研究所 | Rock core withdrawing device |
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2021
- 2021-01-08 CN CN202120052801.8U patent/CN214403495U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114396238A (en) * | 2022-01-26 | 2022-04-26 | 北京探矿工程研究所 | Rock core withdrawing device |
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