CN202362228U - Rock core holder - Google Patents

Rock core holder Download PDF

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Publication number
CN202362228U
CN202362228U CN2011204964510U CN201120496451U CN202362228U CN 202362228 U CN202362228 U CN 202362228U CN 2011204964510 U CN2011204964510 U CN 2011204964510U CN 201120496451 U CN201120496451 U CN 201120496451U CN 202362228 U CN202362228 U CN 202362228U
Authority
CN
China
Prior art keywords
cap
plug
holding unit
cylindrical shell
core holding
Prior art date
Application number
CN2011204964510U
Other languages
Chinese (zh)
Inventor
欧凤平
方帆
舒向伟
彭敏
孙冲
Original Assignee
中国石油化工股份有限公司江汉油田分公司勘探开发研究院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 filed Critical 中国石油化工股份有限公司江汉油田分公司勘探开发研究院
Priority to CN2011204964510U priority Critical patent/CN202362228U/en
Application granted granted Critical
Publication of CN202362228U publication Critical patent/CN202362228U/en

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Abstract

The utility model relates to a rock core holder for oil-gas reservoir stratum protection displacement experiments. The rock core holder is an improvement of an existing rock core holder and mainly comprises a holder barrel body, left and right end covers, left and right end caps and a base, wherein the left and right ends of the holder barrel body are connected with threads of the left and right end covers respectively; both the left end cover and the right end cover are provided with central through holes; rod parts of the left and right end caps pass through the central through holes of the left and right end caps to stretch into an inner cavity of the holder barrel body; and the base is connected with the bottom of the holder barrel body. The rock core holder is characterized in that at least two holding planes are arranged at the place where a handling tool holds the holder barrel body; and the cross section of the place where the handling tool holds on the left end cover and the right end cover takes the shape of a regular hexagon. In addition, an annular slot for installing an O-shaped sealing ring is arranged at the periphery close to the tail end of the rod parts of the left and right end caps; and the base is made of corrosion-resistant materials. Compared with the prior art, the rock core holder has the advantages of easiness in assembly and disassembly, anti-leakage and corrosion resistant.

Description

Core holding unit
Technical field
The utility model relates to core holding unit, is specifically related to be used for the core holding unit of oil and gas reservoir protection displacement test.
Background technology
In the test of oil and gas reservoir rock sensitivity assessment, core holding unit is the key equipment of using always.Existing core holding unit is made up of clamper cylindrical shell, end cap, plug and base.During use, the inner chamber of the clamper cylindrical shell rock core of packing into connects left and right sides end cap, fixing left and right sides plug, and clamper cylindrical shell, left and right sides end cap and left and right sides plug form a sealed hollow, add to encircle hydraulic fluid, can carry out the reservoir protection displacement test.
At present, the outside integral body usually of the clamper cylindrical shell of domestic core holding unit is cylindrical, and end cap adopts eave tile spanner or crowbar to remove and install usually, and in a single day clamper compresses or corrosion just is difficult to the dismounting maintenance.In process of the test, the easy seepage of ring hydraulic fluid in the clamper cylindrical shell.Simultaneously, clamper base material all is a stainless steel usually, and very easily corrosion of environmental impact is put to the test.In addition, the core holding unit structure of using at present is different, and the spare and accessory parts disunity owing to the position and the reason that produce fault in the work are various, just is difficult to the renewal part maintenance in case damage.For above-mentioned reasons, the core holding unit mean lifetime of using at present had a strong impact on manufacturing schedule and test mass less than 1 year.
The utility model content
To the defective of existing core holding unit, the utility model technical matters to be solved provides a kind of easily assembling, antiseep, corrosion resistant core holding unit.
For solving the problems of the technologies described above; The technical scheme of the utility model is: a kind of core holding unit; Mainly comprise clamper cylindrical shell, left end cap, right end cap, left plug, right plug and base; Clamper cylindrical shell right ends is threaded with left end cap and right end cap respectively; Left end cap and right end cap are equipped with central through hole, and the central through hole that the bar portion of left plug and right plug passes left end cap and right end cap respectively extend into the inner chamber of clamper cylindrical shell, and base is connected with clamper cylindrical shell bottom; The position that is used for the handling tool clamping on the said clamper cylindrical shell has two clamping faces at least, and the cross section that is used for the position of handling tool clamping on said left end cap and the right end cap is a regular hexagon.
In addition, the bar portion of said plug is provided with annular groove installation O-ring seals near the periphery of end; Said base adopts resistant material.
The position that is used for the handling tool clamping on the clamper cylindrical shell of the utility model has two clamping faces at least, and the cross section that is used for the position of handling tool clamping on the end cap of the left and right sides is a regular hexagon, and is convenient with assembling of instruments such as pipe wrench or dismounting end cap; The bar portion of left side plug and right plug is provided with annular groove installation O-ring seals near the periphery of end, guarantees that the ring pressure is non-leakage; Base adopts resistant material, prevents salt solution, acid & alkali liquid corrosion base.
Description of drawings
Fig. 1 is the positive sectional structure chart of an embodiment of the utility model.
Embodiment
Be described further below in conjunction with a kind of embodiment of accompanying drawing the utility model:
As shown in Figure 1, the utility model mainly comprises clamper cylindrical shell 1, left end cap 2, right end cap 3, left plug 4, right plug 5, push rod 6, gripping bow 7 and base 9.
Clamper cylindrical shell 1 inside is provided with cavity, places the rock core of required clamping.The periphery at clamper cylindrical shell 1 middle part is the face of cylinder, and the top at middle part is provided with vent port 12, one sides and is provided with ring hydraulic fluid import 13, and the bottom is provided with internal thread hole mounting screw 10.The right and left at clamper cylindrical shell 1 middle part is the position of tool holding such as pipe wrench, and the cross section of this retaining part is the regular hexagon of distortion, and the base is a circular arc, and other five limits are orthohexagonal five limits.The right ends of clamper cylindrical shell 1 is provided with external thread and is connected with the internal thread of left end cap 2 with right end cap 3 respectively.
Left end cap 2 all is provided with central through hole with right end cap 3, and the central through hole part outwardly of left end cap 2 and right end cap 3 is an equal major part taper hole outwardly.The inboard of left end cap 2 right-hand members is provided with internal thread and is connected with the external thread of clamper cylindrical shell 1 left end, and the outside of left end cap 2 left ends is the position of tool holdings such as pipe wrench, and the cross section of this retaining part is a regular hexagon.The left end inboard of right end cap 3 is provided with internal thread and is connected with the external thread of clamper cylindrical shell 1 left end, and the left end of right end cap 3 outside is the position of tool holding such as pipe wrench, and the cross section of this retaining part is a regular hexagon.In addition, the right-hand member outside of right end cap 3 also is provided with a pair of groove opposite, compresses bow 7 grooves through right end cap 3 right-hand members and catches on right end cap 3, and push rod 6 passes the head of screwing that the threaded hole that compresses bow 7 middle parts withstands right plug 5.
The central through hole that left end cap 2 passes in the bar portion of left side plug 4 extend into the inner chamber of clamper cylindrical shell 1, and bar portion middle part is provided with the retaining wing, and its periphery of screwing can also be provided with threaded hole the flexible handle 11 that replaces plug is installed.The center pit that right end cap 3 passes in the bar portion of right plug 5 extend into the inner chamber of clamper cylindrical shell 1, and its periphery of screwing also can be provided with threaded hole the flexible handle 11 that replaces plug is installed.The bar portion of left side plug 4 and right plug 5 is provided with annular groove installation O-ring seals 8 near the periphery of end.
Base 9 adopts resistant material, preferably adopts polytetrafluoroethylmaterial material.Base 9 centers are provided with threaded hole, and screw 10 passes said threaded hole and is connected with the threaded hole of clamper cylindrical shell 1 bottom, and the model of screw 10 is M14-83.
The cross section at the position of handling tool clamping is six positive limit shapes of distortion on the clamper cylindrical shell of the utility model; Orthohexagonal five limits are arranged; The base is a circular arc, and the cross section at the position of handling tool clamping is a regular hexagon on the end cap of the left and right sides, and is convenient with assembling of instruments such as pipe wrench or dismounting end cap; The central through hole of left and right sides end cap is a major part taper hole outwardly towards exterior portions, helps the discharge of the corrosive liquids in the clamper cylindrical shell, slows down the corrosion of clamper inwall; A periphery of screwing of left and right sides plug is provided with threaded hole, is used to install flexible handle, the conveniently assemble and disassemble rock core; The bar portion of left side plug and right plug is provided with annular groove installation O-ring seals near the periphery of end, guarantees that the ring pressure is non-leakage; Base adopts resistant material, prevents salt solution, acid & alkali liquid corrosion base.
In addition, the utility model is not limited to this embodiment and the disclosed content of accompanying drawing, does not everyly break away from various modifications, interpolation and the replacement of making under the spirit disclosed in the utility model on other forms and the details, all falls within the scope of the utility model protection.

Claims (8)

1. core holding unit; Mainly comprise clamper cylindrical shell (1), left end cap (2), right end cap (3), left plug (4), right plug (5) and base (9); Clamper cylindrical shell (1) right ends is threaded with left end cap (2) and right end cap (3) respectively; Left end cap (2) and right end cap (3) are equipped with central through hole; The central through hole that the bar portion of a left side plug (4) and right plug (5) passes left end cap (2) and right end cap (3) respectively extend into the inner chamber of clamper cylindrical shell (1); Base (9) is connected with clamper cylindrical shell bottom, and it is characterized in that: the position that said clamper cylindrical shell (1) is gone up the handling tool clamping has two clamping faces at least, and the cross section that said left end cap (2) and right end cap (3) are gone up the position of handling tool clamping is a regular hexagon.
2. core holding unit as claimed in claim 1 is characterized in that: the cross section that said clamper cylindrical shell (1) is gone up the position of handling tool clamping is the regular hexagon of distortion, and the base is a circular arc, and other five limits are orthohexagonal five limits.
3. core holding unit as claimed in claim 1 is characterized in that: the bar portion of said left plug (4) and right plug (5) is provided with annular groove installation O-ring seals (8) near the periphery of end.
4. core holding unit as claimed in claim 1 is characterized in that: a periphery of screwing of said left plug (4) and right plug (5) is provided with threaded hole flexible handle (11) is installed.
5. core holding unit as claimed in claim 1 is characterized in that: the central through hole part outwardly of said left end cap (2) and right end cap (3) is a major part taper hole outwardly.
6. core holding unit as claimed in claim 1; It is characterized in that: said core holding unit also comprises push rod (6) and compresses bow (7); The right-hand member outside of said right end cap (3) is provided with a pair of groove opposite; The groove that right end cap (3) right-hand member is inserted at the said two ends that compress bow (7) catches on right end cap (3), and push rod (6) passes the head of screwing that the threaded hole that compresses bow (7) middle part withstands right plug (5).
7. core holding unit as claimed in claim 1 is characterized in that: said base (9) adopts resistant material.
8. core holding unit as claimed in claim 7 is characterized in that: described resistant material is a teflon.
CN2011204964510U 2011-12-02 2011-12-02 Rock core holder CN202362228U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204964510U CN202362228U (en) 2011-12-02 2011-12-02 Rock core holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204964510U CN202362228U (en) 2011-12-02 2011-12-02 Rock core holder

Publications (1)

Publication Number Publication Date
CN202362228U true CN202362228U (en) 2012-08-01

Family

ID=46573407

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204964510U CN202362228U (en) 2011-12-02 2011-12-02 Rock core holder

Country Status (1)

Country Link
CN (1) CN202362228U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103278690A (en) * 2013-05-20 2013-09-04 中国石油天然气集团公司 Device and method for applying monitorable axial pressure
CN106226216A (en) * 2016-07-05 2016-12-14 董润华 A kind of core holding unit and measuring method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103278690A (en) * 2013-05-20 2013-09-04 中国石油天然气集团公司 Device and method for applying monitorable axial pressure
CN103278690B (en) * 2013-05-20 2016-01-06 中国石油天然气集团公司 A kind of applying can monitor the device and method of axle pressure
CN106226216A (en) * 2016-07-05 2016-12-14 董润华 A kind of core holding unit and measuring method thereof

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GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120801

Termination date: 20161202

CF01 Termination of patent right due to non-payment of annual fee