CN203603813U - Core grabber composite member suitable for sealed coring - Google Patents
Core grabber composite member suitable for sealed coring Download PDFInfo
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- CN203603813U CN203603813U CN201320801600.9U CN201320801600U CN203603813U CN 203603813 U CN203603813 U CN 203603813U CN 201320801600 U CN201320801600 U CN 201320801600U CN 203603813 U CN203603813 U CN 203603813U
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- core
- adapter sleeve
- clip seat
- guiding clip
- composite member
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Abstract
The utility model discloses a core grabber composite member suitable for sealed coring. The core grabber composite member suitable for the sealed coring comprises an inner cylinder, a connecting sleeve, a sealing head set, a drill bit, a guide hoop seat and a guide hoop, wherein the inner cylinder is fixedly connected with one end of the connecting sleeve, the guide hoop seat is fixedly connected with the other end of the connecting sleeve, the connecting sleeve and the guide hoop seat are located in the drill bit, the guide hoop is arranged in the guide hoop seat, one end of the sealing head set is located on the drill bit through locating pins, the other end of the sealing head set is in sealing fit with the inner wall of the connecting sleeve, and the diameter of the sealing head set is smaller than the inner diameter of the inner cylinder. Connecting sleeve pressure relief holes are formed in the connecting sleeve and are located at the rear end of the connecting point of the connecting sleeve and the guide hoop seat, and guide hoop seat pressure relief holes are formed in tail end of the guide hoop seat. The core grabber composite member suitable for the sealed coring enables sealing liquid to flow out smoothly, a rock core can smoothly enter the inner cylinder accordingly, the rock core is protected effectively, and core blocking is prevented.
Description
Technical field
The utility model relates to a kind of core grabber composite member that is applicable to sealing core drilling, for implementing the construction of sealing core drilling, belongs to the technical field of coring tool.
Background technology
Implementing in the process of exploration drilling, in order to understand the situation of oily in subsurface rock, adopt that to drill through the method that rock core analyzes be current Main Means setting layer position; For the complete lithology sample that drills through subterranean strata, adopting combination core grabber is conventional mode and means.For example, a kind of low erosion coring bit is disclosed in China Patent No. " 200720012302.6 ", its open day is 2008.04.23, formed by inner core, urceolus, adapter sleeve, core grabber, core grabber seat, bit body, in urceolus, be provided with inner core, be provided with adapter sleeve therebetween the two is connected, urceolus lower end is connected with bit body with screw thread, inner core lower end is connected with core grabber seat with screw thread, in core grabber seat, is provided with core grabber.
Existing core grabber composite member is, on the guiding clip seat of normal core-extracting tool core grabber composite member, sealing ring is set, play the effect of sealing drilling fluid, make drilling fluid can not flow into inner core, can effectively avoid like this erosion of drilling fluid to rock core, simultaneously, in order to stop drilling fluid to corrode the reason of rock core, in inner core, a certain amount of sealing fluid is housed; In the time that the rock core drilling through enters the inner core of core barrel, rock core will occupy the space of inner core gradually, will replace space with the sealing fluid being contained in inner core like this.
But due to the restriction of drilling tool diameter, cause the minimum diameter gap between rock core and the rock core guiding clip seat in coring tool too small, if sealing fluid can not flow out inner core smoothly, will result in blockage, and form high pressure, cause rock core to enter heart difficulty, the even stifled heart, finally causes coring unsuccessfully.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing core grabber composite member exists, and a kind of core grabber composite member that is applicable to sealing core drilling is provided.The utility model can flow out sealing fluid smoothly, and rock core also just can enter inner core smoothly, has both effectively protected rock core, has prevented again the stifled heart.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of core grabber composite member that is applicable to sealing core drilling, it is characterized in that: comprise inner core, adapter sleeve, seal head group, drill bit, guiding clip seat and guiding clip, adapter sleeve one end is fixedly connected with inner core, the other end is fixedly connected with guiding clip seat, adapter sleeve and guiding clip seat are positioned at drill bit, guiding clip is arranged in guiding clip seat, seal head group one end is positioned on drill bit by alignment pin, the other end coordinates with adapter sleeve inner wall sealing, and the diameter of seal head group is less than the internal diameter of inner core; On adapter sleeve, be provided with adapter sleeve relief hole, and adapter sleeve relief hole is positioned at adapter sleeve and the clip seat tie point rear end of leading, is provided with guiding clip seat relief hole at the tail end of guiding clip seat.
On the circumference of described adapter sleeve, be provided with multiple adapter sleeve relief holes.
On the circumference of described guiding clip seat, be provided with multiple guiding clip seat relief holes.
Described adapter sleeve is arranged on the lower end of inner core by screwed connection.
Described guiding clip seat is arranged on the lower end of adapter sleeve by screwed connection.
Employing the utility model has the advantage of:
One, adopt after the utility model, enter in heart process at hermetic core taking tool, sealing fluid easily forms high pressure in core grabber composite member, because the utility model is provided with multiple adapter sleeve relief holes and guiding clip seat relief hole on the circumference of adapter sleeve and guiding clip seat, therefore, when seal head group enters after inner core with rock core, sealing fluid will flow downward by the adapter sleeve relief hole and the guiding clip seat relief hole that arrange along original catwalk, is the rock core vacating space drilling through.
Two, because the adapter sleeve relief hole arranging and guiding clip seat relief hole are provided with multiplely on the circumference of adapter sleeve and guiding clip seat, therefore, the speed of pressure release is to guarantee the replacement velocity that needs when rock core enters inner core completely; Sealing fluid can flow out smoothly, and rock core also just can enter inner core smoothly, has both effectively protected rock core, has prevented again the stifled heart, has improved durability and the operating efficiency of this hermetic core taking tool.
Three, in the utility model, described adapter sleeve is arranged on the lower end of inner core by screwed connection, and described guiding clip seat is arranged on the lower end of adapter sleeve by screwed connection, adopts the connected mode of screw thread to be not only convenient to install connection and dismounting, and guaranteed the reliability connecting.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model
Fig. 2 is the amplification connection diagram of the utility model adapter sleeve and guiding clip seat
Fig. 3 is the structure for amplifying schematic diagram of the utility model guiding clip seat
Fig. 4 is the structure for amplifying schematic diagram of the utility model adapter sleeve
In figure, be labeled as: 1, inner core; 2, adapter sleeve; 3, seal head group; 4, drill bit; 5, adapter sleeve relief hole; 6, guiding clip seat; 7, guiding clip seat relief hole; 8, guiding clip; 9, alignment pin.
The specific embodiment
Embodiment 1
A kind of core grabber composite member that is applicable to sealing core drilling, comprise inner core 1, adapter sleeve 2, seal head group 3, drill bit 4, guiding clip seat 6 and guiding clip 8, adapter sleeve 2 one end are fixedly connected with inner core 1, the other end is fixedly connected with guiding clip seat 6, adapter sleeve 2 and guiding clip seat 6 are positioned at drill bit 4, guiding clip 8 is arranged in guiding clip seat 6, seal head group 3 one end are positioned on drill bit 4 by alignment pin 9, the other end coordinates with adapter sleeve 2 inner wall sealings, and the diameter of seal head group 3 is less than the internal diameter of inner core 1; On adapter sleeve 2, be provided with adapter sleeve relief hole 5, and adapter sleeve relief hole 5 is positioned at adapter sleeve 2 and the tie point rear end of the clip seat 6 that leads, is provided with guiding clip seat relief hole 7 at the tail end of guiding clip seat 6.
In the present embodiment, on the circumference of described adapter sleeve 2, be provided with multiple adapter sleeve relief holes 5.
In the present embodiment, on the circumference of described guiding clip seat 6, be provided with multiple guiding clip seat relief holes 7.
In the present embodiment, described adapter sleeve 2 is arranged on the lower end of inner core 1 by screwed connection.
In the present embodiment, described guiding clip seat 6 is arranged on the lower end of adapter sleeve 2 by screwed connection.
Adopt after the utility model, when rock core enters inner core 1, be contained in sealing fluid in inner core 1 from the gap between rock core and inner core 1 to dirty, in the time that sealing fluid is flowed through core grabber composite member, flow area reduces, sealing fluid is flowed not smooth, form high pressure, at this moment, sealing fluid just can flow downward by the female connector relief hole 5 and the guiding clip seat relief hole 7 that arrange, sealing fluid is flowed out unimpeded, the rock core drilling through just can have living space and enter inner core, reaches the target of coring smoothly.
Be applicable to a core grabber composite member for sealing core drilling, comprise adapter sleeve 2 and guiding clip seat 6, be provided with adapter sleeve relief hole 5 in adapter sleeve 2 and guiding clip seat 6 tie point rear ends; Be provided with guiding clip seat relief hole 7 at the tail end of guiding clip seat 6.On the circumference of described adapter sleeve 2, be provided with multiple adapter sleeve relief holes 5.On the circumference of described guiding clip seat 6, be provided with multiple guiding clip seat relief holes 7;
Described adapter sleeve 2 is arranged on the lower end of inner core 1 by screw thread.Described guiding clip seat 6 is arranged on the lower end of adapter sleeve 2 by screw thread.Outside at guiding clip seat 6 and adapter sleeve 2 is drill bit 4.
Adopt after the utility model, the effect of sealing fluid: when alignment pin 9 is cut off, seal head group 3 is being pushed away up by rock core, because the diameter of seal head group 3 is less than inner core 1, when seal head group 3 is left after adapter sleeve 2, the sealing fluid being poured in inner core 1 will flow downward, along with the rock core extracting upwards enters inner core 1, the sealing fluid being poured in inner core 1 will flow out, the sealing fluid cementing out can wrap up rock core, protection rock core is not by drilling fluid contamination, a sealing fluid part is evenly attached to core surface, another part flows down along inner core, through adapter sleeve 2, guiding clip seat 6 flows into drill bit endoporus, flowed out by drill bit endoporus.
Adopt after the utility model the storage of sealing fluid and the formation of high pressure:
Storage: sealing fluid is stored in inner core, top seals at top connection group place by sealing ring with dummy piston, and bottom seals by sealing ring by seal head group 3 on adapter sleeve, and sealing fluid sealed storage, in inner core, is prevented to seepage.
The formation of high pressure: in the time that rock core enters guiding clip seat 6, because the spacing of guiding clip seat 6 minimum diameters and rock core is very little, sealing fluid mixes with landwaste, sealing fluid can not be out replaced smoothly herein, the mixture of sealing fluid and landwaste will stop up at the minimum diameter place of guiding clip seat 6, therefore forms high pressure; In addition, also easily form by the same token high pressure at adapter sleeve 2 places, cause into heart difficulty.
Prior art and pressure release approach of the present utility model are carried out comparative illustration by the present embodiment.
The pressure release approach of prior art: lay down high pressure by the minimum diameter place of guiding clip seat and the gap of rock core, due to the restriction of size, prior art is too small in the gap at the minimum diameter place of adapter sleeve or guiding clip seat, sealing fluid can not flow out fast, therefore, in the time that the rock core drilling through enters the inner core of core barrel, rock core will can not flow out fast because of sealing fluid, causes stopping up.
Pressure release approach of the present utility model: the utility model is except retaining original pressure release passage, on the circumference of adapter sleeve 2, be provided with multiple adapter sleeve relief holes 5, equally also on the circumference of guiding clip seat 6, be provided with multiple guiding clip seat relief holes 7, therefore, in the time occurring that at adapter sleeve 2 minimum diameter places sealing fluid stops up, sealing fluid flows in guiding clip seat by the multiple adapter sleeve relief holes 5 that are arranged on adapter sleeve 2 circumference; When guiding clip seat goes out the obstruction of heart sealing fluid at minimum diameter place, sealing fluid can flow to outside guiding clip seat sealing fluid by being arranged on the multiple guiding clip seat relief holes 7 that arrange on guiding clip seat 6 circumference, flowing into drill bit endoporus, then flowing out through drill bit endoporus.
Claims (5)
1. one kind is applicable to the core grabber composite member of sealing core drilling, it is characterized in that: comprise inner core (1), adapter sleeve (2), seal head group (3), drill bit (4), guiding clip seat (6) and guiding clip (8), adapter sleeve (2) one end is fixedly connected with inner core (1), the other end is fixedly connected with guiding clip seat (6), adapter sleeve (2) and guiding clip seat (6) are positioned at drill bit (4), guiding clip (8) is arranged in guiding clip seat (6), seal head group (3) one end is positioned on drill bit (4) by alignment pin (9), the other end coordinates with adapter sleeve (2) inner wall sealing, and the diameter of seal head group (3) is less than the internal diameter of inner core (1), on adapter sleeve (2), be provided with adapter sleeve relief hole (5), and adapter sleeve relief hole (5) is positioned at adapter sleeve (2) and the tie point rear end of the clip seat (6) that leads, and is provided with guiding clip seat relief hole (7) at the tail end of guiding clip seat (6).
2. the core grabber composite member that is applicable to sealing core drilling according to claim 1, is characterized in that: on the circumference of described adapter sleeve (2), be provided with multiple adapter sleeve relief holes (5).
3. the core grabber composite member that is applicable to sealing core drilling according to claim 1 and 2, is characterized in that: on the circumference of described guiding clip seat (6), be provided with multiple guiding clip seat relief holes (7).
4. the core grabber composite member that is applicable to sealing core drilling according to claim 3, is characterized in that: described adapter sleeve (2) is arranged on the lower end of inner core (1) by screwed connection.
5. according to the core grabber composite member that is applicable to sealing core drilling described in claim 1,2 or 4, it is characterized in that: described guiding clip seat (6) is arranged on the lower end of adapter sleeve (2) by screwed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801600.9U CN203603813U (en) | 2013-12-09 | 2013-12-09 | Core grabber composite member suitable for sealed coring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320801600.9U CN203603813U (en) | 2013-12-09 | 2013-12-09 | Core grabber composite member suitable for sealed coring |
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| Publication Number | Publication Date |
|---|---|
| CN203603813U true CN203603813U (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320801600.9U Active CN203603813U (en) | 2013-12-09 | 2013-12-09 | Core grabber composite member suitable for sealed coring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314497A (en) * | 2014-08-27 | 2015-01-28 | 四川川庆石油钻采科技有限公司 | Rock core sealing device for hydraulic pressurized type coring tool |
| CN106223888A (en) * | 2016-09-29 | 2016-12-14 | 安徽省地质矿产勘查局313地质队 | sealing liquid rope coring drill |
-
2013
- 2013-12-09 CN CN201320801600.9U patent/CN203603813U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314497A (en) * | 2014-08-27 | 2015-01-28 | 四川川庆石油钻采科技有限公司 | Rock core sealing device for hydraulic pressurized type coring tool |
| CN106223888A (en) * | 2016-09-29 | 2016-12-14 | 安徽省地质矿产勘查局313地质队 | sealing liquid rope coring drill |
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