CN108333012B - Wellhead core holding and cutting device and application method thereof - Google Patents
Wellhead core holding and cutting device and application method thereof Download PDFInfo
- Publication number
- CN108333012B CN108333012B CN201810229090.XA CN201810229090A CN108333012B CN 108333012 B CN108333012 B CN 108333012B CN 201810229090 A CN201810229090 A CN 201810229090A CN 108333012 B CN108333012 B CN 108333012B
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- core
- inner sleeve
- cutter
- rock core
- outer sleeve
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 239000011435 rock Substances 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000002689 soil Substances 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 6
- 210000002615 epidermis Anatomy 0.000 claims description 6
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000004744 fabric Substances 0.000 abstract description 5
- 239000011121 hardwood Substances 0.000 abstract description 4
- 238000011835 investigation Methods 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
Abstract
The application discloses a wellhead core holding and cutting device and a using method thereof, and belongs to the field of geotechnical engineering investigation. The device comprises a main body support device and a core splitting device, wherein the main body support consists of an outer sleeve, an inner sleeve, a front support, a rear baffle, a water baffle and a guide rail, the inner sleeve and the outer sleeve are sleeved to form a U-shaped pipe with the same axis, and the U-shaped pipe is used for Cheng Fangyan cores when cores are taken out; the rock core cutting device is made of a cutter, a sliding block and a fastening bolt, wherein the sliding block is sleeved on the guide rail and can freely slide, and the cutter can be used for cutting a rock core at any position. The method can effectively improve the quality of the rock core and the layering precision of the rock core, reduce the labor intensity for carrying the rock core, reduce the requirements on the flatness and the size of the field, avoid the work of paving waterproof cloth or hard wood boards before operation, and reduce the workload of recovering the original appearance of the field after operation.
Description
Technical Field
The application belongs to the field of geotechnical engineering investigation, and particularly relates to a wellhead core holding and cutting device and a using method thereof.
Background
In geotechnical engineering exploration, in order to obtain the stratum distribution of a field to be surveyed, coring and logging are required to be performed at the arranged exploration points. In the drilling coring process, after a drill bit drills to a specified depth, an operator lifts off a drill rod, lifts a core barrel out of a wellhead, lifts off the core barrel, connects the top of the core barrel with a water pipe, and punches out the core barrel in the core barrel to waterproof cloth or a wood board paved on the ground by using the pressure of water. After the core is completely punched out, an operator uses a shovel to cut off the core, carries the core into a core box, and places the core according to the sequence of punching out the core pipe. And the catalogue personnel name the soil layer and judge the layering condition of the rock and soil according to the rock core, then, according to the arrangement of the rock core in a rock core box, the secondary label and the layering label of the rock and soil are timely attached to the rock core, and recorded to a site drilling record table.
However, this process has been found in practice to have a number of disadvantages:
1. in the process of punching out the rock core, the rock core is rubbed with waterproof cloth or a hard wood plate paved on the ground, so that the rock core is distorted or even bent, and the upper and lower relationship of the bent rock core is difficult to separate sometimes;
2. after the core is punched out, an operator cuts off the core by a shovel and carries the core into a core box, the length of the core box is 1m, in the process, the cut-off position is estimated by the operator, the core is often less than 1m or more than 1m, and the error of stratum layering depth during the cataloging is caused;
3. the rock core after the manual cutting is placed on the ground, an operator is required to bend down to carry the rock core box, the working strength is high, and the problem of rock core breakage possibly occurs in the carrying process.
Disclosure of Invention
In order to solve the problems, the application provides a wellhead core holding and cutting device and a using method thereof, which can effectively ensure the integrity of cores and improve the quality and layering precision of the cores.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the wellhead core holding and cutting device comprises an inner sleeve and an outer sleeve, wherein one end of the inner sleeve is sleeved with one end of the outer sleeve; the inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve at the joint of the inner sleeve and the outer sleeve, so that after the core barrel is lifted, the drill bit part can be clamped at the joint of the inner sleeve and the outer sleeve; the other end of the inner sleeve is provided with a rear baffle;
a water baffle is arranged on the outer sleeve close to the joint of the inner sleeve and the outer sleeve, and is hinged to the outer sleeve and can be opened and closed;
the outer side of the inner sleeve is provided with a guide rail parallel to the axis of the inner sleeve, the guide rail is provided with a sliding block capable of sliding back and forth along the guide rail, the sliding block is provided with a cutter connected with the sliding block, the cutter is a semicircular thin steel sheet with a cutting edge, the diameter of the cutter is slightly smaller than the inner diameter of the inner sleeve, and the cutter can be freely opened and closed relative to the inner sleeve.
Preferably, the inner diameter of the outer sleeve is slightly larger than the diameter of the drill bit on the core barrel.
Preferably, the inner diameter of the inner sleeve is slightly larger than the diameter of the core.
Preferably, the cross sections of the inner sleeve and the outer sleeve are semicircular or fan-shaped.
Preferably, a front bracket is arranged at the bottom of the outer sleeve, and a rear bracket is arranged at the bottom of the inner sleeve.
Preferably, the height of the front bracket and the rear bracket is about 1.2m.
Preferably, the rear baffle is provided with a notch.
Preferably, the guide rail is provided with scales, and the slide block is provided with a fastening bolt for fixing the slide block.
Furthermore, the application also provides a using method of the wellhead core holding and cutting device, which comprises the following steps:
when the rock core pipe is used, the rock core pipe is lifted out of the wellhead, is placed on the outer sleeve and slides forwards along the outer sleeve, is propped against the joint of the outer sleeve and the inner sleeve, and is closed with the water baffle;
removing a drill rod connected with the rock core pipe, connecting a water pipe with the rock core pipe, turning on a switch for controlling the water pipe, flushing out the rock core by water pressure, entering the inner sleeve, and enabling muddy water entering the inner sleeve to flow out through a middle notch of the rear baffle; after the core is completely punched out, the water baffle is opened, the core pipe is taken away, the cutter is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed up, the shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the soil layer is conveniently named and layered, and the core cannot slide backwards at will due to the blocking of the tail end cutter. Then, loosening the fastening bolt to enable the sliding block to slide along the guide rail with the scales, closing the cutter according to the scales on the guide rail with the scales, and cutting the rock core into the rock core with the set length; and taking the cut core out of the inner sleeve and carrying the core into a core box.
Furthermore, the application also provides a using method of the wellhead core holding and cutting device, which comprises the following steps:
when the plastic rock core holding pipe is used, a plastic rock core holding pipe is placed in the inner sleeve in advance, then the rock core pipe is lifted out of a wellhead, the rock core pipe is placed on the outer sleeve and slides forwards along the outer sleeve, and the water baffle is closed through the joint of the outer sleeve and the inner sleeve; removing a drill rod connected with the rock core tube, connecting a water pipe with the rock core tube, opening a water pipe control switch, flushing the rock core into the inner sleeve by water pressure, and enabling muddy water entering the inner sleeve to flow out through a middle notch of the rear baffle; after the core is completely punched out, the core tube is taken away, the cutter is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed down, a shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the soil layer is convenient to name and layer, and the core cannot slide backwards at will due to the blocking of the tail end cutter. Then, loosening the fastening bolt to enable the sliding block to slide along the guide rail with the scales, closing the cutter according to the scales on the guide rail with the scales, and cutting the rock core into the rock core with the length of 1 m; and taking out the cut plastic core containing tube and the core together, placing the plastic core containing tube and the core on the ground in order, attaching a label, and taking a picture.
The beneficial effects of the application are as follows:
1. the application has simple structure and convenient use, and the whole device adopts an integrated structure and can be used at any time.
2. The application has low price and is convenient for popularization.
3. The application reduces the action of bending over once in the carrying process and reduces the labor intensity of operators.
4. The application reduces the requirements on the field leveling degree and the field size, avoids the work of paving waterproof cloth or hard wood board before each start of operation, and is convenient for quick development operation.
5. The application greatly improves the layering precision of the rock core and the quality of the rock core, and effectively prevents the rock core from bending, twisting and breaking.
6. The application effectively prevents the ground from being polluted by the core and the muddy water, reduces the workload of restoring the original appearance of the ground after the final hole
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic view of a three-dimensional overall structure of the present application;
FIG. 2 is an isometric view of the present application;
FIG. 3 is an enlarged schematic view of the cutter and slider fastening means;
in the figure: the novel water heater comprises a front support, an outer sleeve, a water baffle, an inner sleeve, a cutter, a rear support, a rear baffle, a fastening bolt, a sliding block and a guide rail.
Detailed Description
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As described in the background art, in the prior art, during the process of punching out the core, the core rubs with waterproof cloth or a hard wood board paved on the ground, so that the core is distorted or even bent, and the upper and lower relationship of the bent core is sometimes difficult to separate; after the core is punched out, an operator cuts off the core by a shovel and carries the core into a core box, the length of the core box is 1m, in the process, the cut-off position is estimated by the operator, the core is often less than 1m or more than 1m, and the error of stratum layering depth during the cataloging is caused; the core after the manual cutting needs the operating personnel to bend down and carry to the core box, and working strength is great, and the phenomenon of core rupture probably appears in the handling.
In order to solve the technical problems, the application provides a wellhead core holding and cutting device and a using method thereof. The main structure of the application is formed by sleeving an outer sleeve 2 and an inner sleeve 4; forming a U-shaped tube with a coaxial center; the front bracket is welded on the outer sleeve, the rear bracket is welded on the inner sleeve, and the heights of the front bracket and the rear bracket are about 1.2m. The rear baffle is welded at the distal end of the inner sleeve, and is provided with a notch for the muddy water entering the inner sleeve 4 at a later stage to flow out through the middle notch of the rear baffle 7.
The cross sections of the inner sleeve and the outer sleeve are elliptical or semicircular, and the inner diameter of the inner sleeve is slightly larger than the diameter of the rock core, so that the rock core can be taken out conveniently.
The inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve, and one ends of the inner sleeve and the outer sleeve are sleeved together, so that the end part of the rock core pipe can be clamped at the joint of the inner sleeve and the outer sleeve.
The outside of the outer sleeve 2 is provided with a water baffle 3, the water baffle 3 is hinged with the outer sleeve 2, and when the core barrel reaches the connection position of the outer sleeve and the inner sleeve, the water baffle 3 is closed to fix the core barrel and prevent muddy water from splashing.
A guide rail 10 with a scale is arranged on the outer side of the inner sleeve 4, the guide rail 10 is parallel to the axis of the inner sleeve 4, a slide block 9 is arranged on the guide rail, a fastening bolt 8 is arranged on the slide block 9, and the cutter 5 is hinged with the slide block 9; through the movement of the sliding block 9 on the guide rail, the movement of the cutter can be realized, and cores with different lengths can be cut.
The rock core splitting device is composed of a cutter 5, a slide block 9 and a fastening bolt 8, wherein the slide block 9 is sleeved on a guide rail 10 and can slide freely, a hinge seat is welded on the slide block 9, the cutter 5 is hinged on the slide block 9 through the hinge seat, a threaded drilling hole is formed in the middle of the slide block 9, the fastening bolt 8 is coupled with the threaded drilling hole, and when the rock core splitting device is used, the slide block is fixed by rotating the fastening bolt.
And the diameter of the cutter 5 is slightly smaller than the inner diameter of the inner sleeve, and the cutter is closed, so that the cutter edge and the inner wall of the inner sleeve are well coupled.
The guide rail 10 is carved with scales, the sliding block is well coupled with the guide rail, and the sliding block can freely slide on the guide rail.
The specific application method is as follows:
when the rock core pipe is used, the rock core pipe is lifted out of a wellhead, is placed on the outer sleeve 2, slides forwards along the outer sleeve 2, is propped against the joint of the outer sleeve 2 and the inner sleeve 4, and is closed with the water baffle 3; removing a drill rod connected with the core barrel, connecting a water pipe with the core barrel, opening a water pipe control switch, flushing the core barrel into the inner sleeve 4 by water pressure, and enabling muddy water entering the inner sleeve 4 to flow out through a middle notch of the rear baffle 7; after the core is completely punched out, the core pipe is taken away, the cutter 5 is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed down, a shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the soil layer is conveniently named and layered, and the core cannot slide backwards at will due to the blocking of the cutter at the tail end. Then, loosening the fastening bolt to enable the sliding block 9 to slide along the guide rail 10 with the scales, closing the cutter according to the scales on the guide rail 10 with the scales, and cutting the rock core into 1m long rock cores; the cut core is taken out of the inner sleeve 4 and transported to a core box.
Example 2
When the plastic rock core holding pipe is used, a plastic rock core holding pipe is placed in the inner sleeve in advance, then the rock core pipe is lifted out of a wellhead, the rock core pipe is placed on the outer sleeve 2 and slides forwards along the outer sleeve 2, the joint of the outer sleeve 2 and the inner sleeve 4 is propped against, and the water baffle 3 is closed; removing a drill rod connected with the core barrel, connecting a water pipe with the core barrel, opening a water pipe control switch, flushing the core barrel into the inner sleeve 4 by water pressure, and enabling muddy water entering the inner sleeve 4 to flow out through a middle notch of the rear baffle 7; after the core is completely punched out, the core pipe is taken away, the cutter 5 is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed down, a shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the soil layer is conveniently named and layered, and the core cannot slide backwards at will due to the blocking of the cutter at the tail end. Then, loosening the fastening bolt to enable the sliding block 9 to slide along the guide rail 10 with the scales, closing the cutter according to the scales on the guide rail 10 with the scales, and cutting the rock core into 1m long rock cores; and taking out the cut plastic core containing tube and the core together, placing the plastic core containing tube and the core on the ground in order, attaching a label, and taking a picture. The core is taken out with the plastic core holding pipe, so that the breakage of the core in the carrying process can be effectively prevented.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. The wellhead core holding and cutting device is characterized by comprising an inner sleeve and an outer sleeve, wherein one end of the inner sleeve is sleeved with one end of the outer sleeve; the inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve at the joint of the inner sleeve and the outer sleeve, and a rear baffle is arranged at the other end of the inner sleeve;
a water baffle is arranged on the outer sleeve which is positioned near the joint of the inner sleeve and the outer sleeve, and is connected to the outer sleeve through a hinge, and the water baffle can be opened and closed;
the outer side of the inner sleeve is provided with a guide rail parallel to the axis of the inner sleeve, the guide rail is provided with a sliding block capable of sliding back and forth along the guide rail, the sliding block is provided with a cutter connected with the sliding block, the cutter is a semicircular thin steel sheet with a cutting edge, the diameter of the cutter is slightly smaller than the inner diameter of the inner sleeve, when the cutter is closed, the cutter is well coupled with the inner wall of the inner sleeve, and the cutter can be freely opened and closed relative to the inner sleeve;
the inner diameter of the outer sleeve is slightly larger than the diameter of the core tube drill bit;
the inner diameter of the inner sleeve is slightly larger than the diameter of the rock core.
2. A wellhead core holding and splitting device as claimed in claim 1, wherein the cross section of the inner and outer sleeves is semi-circular or fan-shaped.
3. The wellhead core holding and splitting device of claim 1, wherein a front support is provided at the bottom of the outer sleeve and a rear support is provided at the bottom of the inner sleeve.
4. A wellhead core holding and splitting device as claimed in claim 3 wherein the front and rear supports have a height of 1.2m.
5. A wellhead core holding and splitting device as recited in claim 1, wherein said tailgate is provided with a slit.
6. The wellhead core holding and slicing apparatus of claim 1, wherein the guide rail is provided with graduations, and the slider is provided with fastening bolts for fixing the slider.
7. A method of using a wellhead core holding and slicing apparatus as claimed in any of claims 1-6,
when the rock core pipe is used, the rock core pipe is lifted out of the wellhead, is placed on the outer sleeve and slides forwards along the outer sleeve, is propped against the joint of the outer sleeve and the inner sleeve, and is closed with the water baffle;
removing a drill rod connected with the rock core pipe, connecting a water pipe with the rock core pipe, turning on a switch for controlling the water pipe, flushing out the rock core by water pressure, entering the inner sleeve, and enabling muddy water entering the inner sleeve to flow out through a middle notch of the rear baffle; after the core is completely punched out, the core pipe is detached, the cutter is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed, a shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the designation and layering of a soil layer are facilitated, and the core cannot slide backwards at will due to the blocking of the cutter at the tail end; then, loosening the fastening bolt to enable the sliding block to slide along the guide rail with the scales, closing the cutter according to the scales on the guide rail with the scales, and cutting the rock core into the rock core with the set length; and taking the cut core out of the inner sleeve and carrying the core into a core box.
8. A method of using a wellhead core holding and slicing apparatus as claimed in any of claims 1-6,
when the plastic rock core holding pipe is used, a plastic rock core holding pipe is placed in the inner sleeve in advance, then the rock core pipe is lifted out of a wellhead, the rock core pipe is placed on the outer sleeve and slides forwards along the outer sleeve, and the water baffle is closed through the joint of the outer sleeve and the inner sleeve; removing a drill rod connected with the rock core tube, connecting a water pipe with the rock core tube, opening a water pipe control switch, flushing the rock core into the inner sleeve by water pressure, and enabling muddy water entering the inner sleeve to flow out through a middle notch of the rear baffle; after the core is completely punched out, the core pipe is taken away, the cutter is opened, the sliding block slides to the tail end of the core along the guide rail with scales, the cutter is closed, the fastening bolt is screwed, a shovel is used for removing part of the core epidermis from front to back, a fresh surface is exposed, the soil layer is conveniently named and layered, and the core cannot slide backwards at will due to the blocking of the cutter at the tail end; then, loosening the fastening bolt to enable the sliding block to slide along the guide rail with the scales, closing the cutter according to the scales on the guide rail with the scales, and cutting the rock core into the rock core with the length of 1 m; and taking out the cut plastic core containing tube and the core together, placing the plastic core containing tube and the core on the ground in order, attaching a label, and taking a picture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229090.XA CN108333012B (en) | 2018-03-20 | 2018-03-20 | Wellhead core holding and cutting device and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810229090.XA CN108333012B (en) | 2018-03-20 | 2018-03-20 | Wellhead core holding and cutting device and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108333012A CN108333012A (en) | 2018-07-27 |
| CN108333012B true CN108333012B (en) | 2023-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810229090.XA Active CN108333012B (en) | 2018-03-20 | 2018-03-20 | Wellhead core holding and cutting device and application method thereof |
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| CN (1) | CN108333012B (en) |
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| Publication number | Publication date |
|---|---|
| CN108333012A (en) | 2018-07-27 |
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