CN218726469U

CN218726469U - Rock core holder suitable for tight sandstone is moist to be adjusted

Info

Publication number: CN218726469U
Application number: CN202222915666.2U
Authority: CN
Inventors: 张云钧; 荣笑然; 黄新果; 窦慧学; 史逸凡
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-03-24
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a rock core holder suitable for fine and close sandstone is moist adjusts relates to rock core holder field. The utility model provides a rock core holder suitable for tight sandstone is moistened and is adjusted, includes left barrel, right barrel, left side barrel and right barrel can dismantle the connection, still include: the first connecting disc is fixedly connected to the outer wall of the left cylinder; the connecting disc II is fixedly connected to the outer wall of the right barrel body, and an inserted bar is fixedly connected to the connecting disc II; the groove is embedded in the inserted rod and is internally connected with a clamping block in a sliding mode, and a first spring is arranged between the clamping block and the groove; the utility model discloses, can be convenient for carry out quick dismantlement installation to left barrel and right barrel, and then can be convenient for take out the rock core body after the permeability test of rock core body, and can be convenient for change it when the gum cover wearing and tearing are serious to and can adjust the interval between two sets of chock plugs according to the length of rock core body.

Description

Rock core holder suitable for tight sandstone is moist to be adjusted

Technical Field

The utility model belongs to the technical field of the rock core holder, specifically speaking relates to a rock core holder suitable for fine and close sandstone is moist to be adjusted.

Background

Rock wettability measurement is a basic experiment of petroleum physical property measurement, the measurement methods are many, wherein a self-suction method is a quantitative analysis method, a rock core holder is usually used when rock wettability is measured by the self-suction method at present, however, the plug head in the holder cannot be adjusted according to the length of a rock core in the conventional rock core holder, so that different rock core holders need to be replaced when rock cores with different lengths are measured, the experiment efficiency is reduced, and the experiment cost is increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in overcoming the not enough of prior art, provides one kind and can overcome above-mentioned problem or solve above-mentioned problem at least partially a rock core holder suitable for tight sandstone is moist and is adjusted.

In order to solve the technical problem, the utility model adopts the following basic concept:

the utility model provides a rock core holder suitable for tight sandstone is moistened and is adjusted, includes left barrel, right barrel, left side barrel and right barrel can dismantle the connection, still include: the first connecting disc is fixedly connected to the outer wall of the left cylinder; the connecting disc II is fixedly connected to the outer wall of the right barrel body, and an inserted bar is fixedly connected to the connecting disc II; the groove is embedded in the inserted rod and is internally connected with a clamping block in a sliding manner, and a first spring is arranged between the clamping block and the groove; the left pressing cap is detachably connected to the left barrel body; the right pressing cap is detachably connected to the right barrel, and a rubber sleeve is arranged between the left barrel and the right barrel; the core body is arranged between the two groups of the plug heads, and a second spring is fixedly connected between the two groups of the plug heads and the left pressing cap and the right pressing cap respectively; the screw rods are respectively and rotatably connected to the two groups of plug heads, a driving portion is arranged at one end, penetrating through the left pressing cap and the right pressing cap, of each screw rod, and the two groups of screw rods are respectively in threaded connection with the left pressing cap and the right pressing cap.

Preferably, the driving part comprises two groups of rocking bars, and the two groups of rocking bars are respectively and fixedly installed on one end of the two groups of screw rods penetrating through the left pressing cap and the right pressing cap.

Preferably, an annular cavity is arranged between the outer wall of the rubber sleeve and the inner walls of the left barrel body and the right barrel body, the outer wall of the right barrel body is fixedly connected with a liquid inlet pipe and a liquid discharge pipe which are communicated with the annular cavity, and a control valve is arranged on the liquid discharge pipe.

Further, the control valve comprises a valve switch, and the valve switch is connected to the drain pipe.

Preferably, the surface that left side barrel and right barrel laminated mutually all is equipped with sealed the pad, two sets of sealed pad closely laminates.

Preferably, the two sides of the insertion rod, which are located on the groove, are both provided with limiting chutes, the limiting chutes are connected with limiting plates in a sliding manner, the clamping blocks are fixedly connected to the limiting plates, and the first spring is fixedly connected between the limiting plates and the groove.

Preferably, the left pressure cap is detachably connected with the left barrel through a first mounting bolt, and the right pressure cap is detachably connected with the right barrel through a second mounting bolt.

Furtherly, two sets of equal fixedly connected with is spacing dish on the outer wall of lead screw, the symmetry sliding connection has two sets of sealing rings in the annular chamber, and is two sets of equal fixedly connected with connecting rod on the sealing ring is two sets of the one end that the connecting rod runs through left barrel, right barrel outer wall respectively rotates to be connected on spacing dish.

Furthermore, a guide sliding groove is embedded in the limiting disc and is arranged in a T shape, and the connecting rod is connected to one end of the limiting disc in a sliding mode and is connected to the inside of the guide sliding groove.

Furthermore, a first hollow cavity is formed in the plug head, a second hollow cavity is formed in the screw rod, the first hollow cavities are communicated through a first rotary joint arranged on the plug head, a second rotary joint is arranged at one end of each of the two groups of rocking rods, and a pipeline communicated with the second hollow cavities is connected to the second rotary joints.

After the technical scheme is adopted, compared with the prior art, the utility model following beneficial effect has:

the utility model discloses, can be convenient for carry out quick dismantlement installation to left barrel and right barrel, and then can be convenient for take out the rock core body after the permeability test of rock core body, and can be convenient for change it when the gum cover wearing and tearing are serious to and can adjust the interval between two sets of chock plugs according to the length of rock core body.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

fig. 1 is a schematic structural diagram of a rock core holder suitable for tight sandstone wetting regulation according to the present invention;

fig. 2 is a schematic diagram of the internal structure of a rock core holder suitable for tight sandstone wetting regulation according to the present invention;

fig. 3 is an enlarged view of portion a of fig. 2 of a core holder suitable for tight sandstone wetting regulation in accordance with the present invention;

fig. 4 is an enlarged view of portion B of fig. 2 of a core holder suitable for tight sandstone wetting conditioning of the present invention.

In the figure: 1. a left barrel; 101. a left pressure cap; 102. mounting a first bolt; 103. a first connecting disc; 2. a right cylinder; 201. a right pressure cap; 202. mounting a second bolt; 203. a second connecting disc; 3. a rod is inserted; 301. a groove; 302. a first spring; 303. a clamping block; 304. a limiting chute; 305. a limiting plate; 306. a gasket; 4. a rubber sleeve; 401. a core body; 402. an annular cavity; 403. a liquid inlet pipe; 404. a liquid discharge pipe; 405. opening and closing a valve; 5. a plug head; 501. a screw rod; 502. a second spring; 503. a rocker; 504. a limiting disc; 505. a connecting rod; 506. a seal ring; 507. a guide chute; 6. the hollow cavity I; 601. a first rotary joint; 602. a hollow cavity II; 603. a second rotary joint; 604. a pipeline.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept by those skilled in the art with reference to specific embodiments.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments, and the following embodiments are used for illustrating the present invention, but do not limit the scope of the present invention.

Example 1:

referring to fig. 1-4, a rock core holder suitable for tight sandstone is moistened and is adjusted, includes left barrel 1, right barrel 2, and left barrel 1 and right barrel 2 can dismantle the connection, still includes: the first connecting disc 103 is fixedly connected to the outer wall of the left barrel 1; the second connecting disc 203 is fixedly connected to the outer wall of the right barrel 2, and the second connecting disc 203 is fixedly connected with the inserted rod 3; the groove 301 is embedded in the insert rod 3, a clamping block 303 is connected in the groove 301 in a sliding mode, and a first spring 302 is arranged between the clamping block 303 and the groove 301; the left pressing cap 101 is detachably connected to the left barrel 1; the right pressing cap 201 is detachably connected to the right barrel 2, and a rubber sleeve 4 is arranged between the left barrel 1 and the right barrel 2; two groups of plugs 5 are symmetrically arranged, the two groups of plugs 5 are connected in the rubber sleeve 4 in a sliding manner, a core body 401 is arranged between the two groups of plugs 5, and a second spring 502 is fixedly connected between each group of plugs 5 and the left pressing cap 101 and the right pressing cap 201 respectively; the screw rods 501 are respectively and rotatably connected to the two groups of plug heads 5, one ends of the two groups of screw rods 501 respectively penetrating through the left pressing cap 101 and the right pressing cap 201 are respectively provided with a driving part, and the two groups of screw rods 501 are respectively in threaded connection with the left pressing cap 101 and the right pressing cap 201.

The driving part comprises two groups of rocking bars 503, and the two groups of rocking bars 503 are respectively and fixedly arranged on one end of the two groups of screw rods 501 penetrating through the left pressing cap 101 and the right pressing cap 201.

An annular cavity 402 is arranged between the outer wall of the rubber sleeve 4 and the inner walls of the left barrel 1 and the right barrel 2, the outer wall of the right barrel 2 is fixedly connected with a liquid inlet pipe 403 and a liquid outlet pipe 404 which are communicated with the annular cavity 402 respectively, and a control valve is arranged on the liquid outlet pipe 404.

The control valve includes a valve switch 405, and the valve switch 405 is connected to the drain pipe 404.

The left pressure cap 101 is detachably connected with the left cylinder 1 through a first mounting bolt 102, and the right pressure cap 201 is detachably connected with the right cylinder 2 through a second mounting bolt 202.

The outer walls of the two groups of screw rods 501 are fixedly connected with limit discs 504, the annular cavity 402 is internally and symmetrically connected with two groups of sealing rings 506 in a sliding manner, the two groups of sealing rings 506 are fixedly connected with connecting rods 505, and the two groups of connecting rods 505 respectively penetrate through the outer walls of the left barrel body 1 and the right barrel body 2 and are rotatably connected to the limit discs 504.

The limiting disc 504 is embedded with a guide sliding groove 507, the guide sliding groove 507 is arranged in a T shape, and the connecting rod 505 is rotatably connected to one end of the limiting disc 504 in the guide sliding groove 507.

The plug 5 is provided with a first hollow cavity 6, the screw rod 501 is provided with a second hollow cavity 602, the first hollow cavity 6 is communicated with the first rotary joint 601 arranged on the plug 5, one end of each of the two groups of rocking bars 503 is provided with a second rotary joint 603, and the second rotary joint 603 is connected with a pipeline 604 communicated with the second hollow cavity 602.

When the core body 401 needs to be wetted and the water absorption is judged, firstly, the core body 401 is placed into the rubber sleeve 4, then the connecting disc II 203 on the right barrel 2 and the connecting disc I103 on the left barrel 1 are covered together, the inserting rod 3 penetrates through a mounting hole formed in the connecting disc I103, at the moment, the fixture block 303 is pressed to retract into the groove 301, the spring I302 is compressed until the connecting disc II 203 is attached to the connecting disc I103, the fixture block 303 is moved out of the mounting groove, the compressed spring I302 generates thrust, the fixture block 303 is pushed to slide outwards, the fixture block 303 is clamped on the outer wall of the left side of the connecting disc I103, and therefore the right barrel 2 and the left barrel 1 can be fixedly connected, then a user holds the rocker 503 by hand, the rocker 503 is driven to rotate manually, the rocker 503 drives the two groups of screw rods 501 to rotate, the two groups of screw rods 501 move in the left barrel 1 and the right barrel 2 respectively under the effect of threaded connection with the left pressing cap 101 and the right pressing cap 201 respectively, and push the two groups of plug heads 5 to move oppositely, so that the two groups of plug heads 5 are abutted against the core body 401 in the rubber sleeve 4, and the two groups of screw rods 501 are respectively in threaded connection with the left pressing cap 101 and the right pressing cap 201, so that the two groups of plug heads 5 can be driven to move oppositely or move oppositely, and the distance between the two groups of plug heads 5 can be adjusted according to the length of the core body 401;

meanwhile, two sets of screw rods 501 respectively move synchronously in the left barrel 1 and the right barrel 2 under the effect of threaded connection with the left press cap 101 and the right press cap 201, so that the two sets of sealing rings 506 are pushed by the screw rods 501 through the connecting rods 505 to synchronously move towards each other along with the plug heads 5, further, the length of the annular cavity 402 can be synchronously adjusted according to the length of the core body 401, then, a water pump outside a flange plate arranged on the liquid inlet pipe 403 is used for pumping an external water source to inject water into the annular cavity 402, a one-way valve is arranged on the liquid inlet pipe 403, so that water in the annular cavity 402 is continuously increased, the rubber sleeve 4 is pushed to tightly and closely fit with the outer walls of the core body 401 and the plug heads 5, the sealing performance between the plug heads 5 and the core body 401 is improved, at the moment, the external water pump is pumped by the flange plate connected with the pipeline 604, the water source externally connected with the water pump is pumped into the hollow cavity two 602, then the water source is conveyed into the hollow cavity two cavities 6 through the hollow cavity 602, finally, the water outlet pipe is drained by the outlet end of the water outlet pipe, so that the water outlet pipe 203 is contacted with the water inlet pipe 402, the fixture block 401 and the fixture block can be completely retracted after the fixture is pushed, and the fixture 401 is completely retracted, and the fixture 401 is pushed, and the fixture can be quickly, and the fixture 401 is pushed, and the fixture block can be pushed by a user, and the fixture 401, and the fixture can be quickly pushed by the fixture after the fixture 101, and the fixture can be quickly pushed, and the fixture 401, and the fixture can be quickly pushed by the fixture 401, and the fixture block 301, and the fixture can be quickly pushed, and the fixture can be pulled out of the fixture 401, and the fixture block can be quickly, thereby the user of being convenient for takes out the rock core body 401 after the test from the gum cover 4, and is convenient for change it when gum cover 4 wearing and tearing are serious.

Example 2:

referring to fig. 2, a core holder suitable for the wetting adjustment of tight sandstone is basically the same as that in the embodiment 1, further, sealing gaskets 306 are arranged on the surfaces of the left barrel 1 and the right barrel 2, and the two groups of sealing gaskets 306 are tightly attached; when the left barrel body 1 and the right barrel body 2 are combined and fixedly installed together, the two groups of sealing gaskets 306 are tightly attached, so that the sealing performance between the left barrel body 1 and the right barrel body 2 is improved.

Example 3:

referring to fig. 2 and 4, a core holder suitable for tight sandstone wetting adjustment is substantially the same as that in embodiment 1, further, a limiting sliding chute 304 is formed in each of two sides of the insertion rod 3, which are located in the groove 301, a limiting plate 305 is slidably connected to each limiting sliding chute 304, the fixture block 303 is fixedly connected to each limiting plate 305, and the first spring 302 is fixedly connected between each limiting plate 305 and the groove 301; when the fixture block 303 slides in the groove 301, the limiting plate 305 slides downwards in the limiting sliding groove 304 to limit the fixture block 303, so that the fixture block 303 is prevented from being pushed out of the groove 301 by the thrust generated by the first spring 302 after the fixture block 303 is compressed, and the normal use is prevented from being affected.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and although the present invention has been disclosed with reference to the above preferred embodiment, but not to limit the present invention, any person skilled in the art can make some changes or modifications to equivalent embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments by the technical spirit of the present invention still fall within the scope of the present invention.

Claims

1. The utility model provides a rock core holder suitable for tight sandstone is moistened and is adjusted, includes left barrel (1), right barrel (2), left side barrel (1) and right barrel (2) can be dismantled and connect, its characterized in that still includes:

the first connecting disc (103) is fixedly connected to the outer wall of the left cylinder (1);

the second connecting disc (203) is fixedly connected to the outer wall of the right barrel (2), and the second connecting disc (203) is fixedly connected with an inserted rod (3);

the groove (301) is embedded in the insert rod (3), a clamping block (303) is connected in the groove (301) in a sliding mode, and a first spring (302) is arranged between the clamping block (303) and the groove (301);

the left pressing cap (101) is detachably connected to the left barrel body (1);

a right pressing cap (201) which is detachably connected to the right cylinder body (2),

wherein a rubber sleeve (4) is arranged between the left barrel body (1) and the right barrel body (2);

two groups of plugs (5) are symmetrically arranged, the two groups of plugs (5) are connected in the rubber sleeve (4) in a sliding manner, a core body (401) is arranged between the two groups of plugs (5), and a second spring (502) is fixedly connected between each group of plugs (5) and the left pressing cap (101) and the right pressing cap (201);

the screw rod (501) is respectively and rotatably connected to the two sets of plug heads (5), the screw rod (501) is two sets of one end, which penetrates through the left pressing cap (101) and the right pressing cap (201) respectively, of the screw rod (501) is provided with a driving part, and the screw rod (501) is respectively in threaded connection with the left pressing cap (101) and the right pressing cap (201).

2. The core holder suitable for tight sandstone wetting regulation according to claim 1, wherein the driving part comprises two groups of rocking rods (503), and the two groups of rocking rods (503) are respectively fixedly installed on one end of two groups of screw rods (501) penetrating through the left pressing cap (101) and the right pressing cap (201).

3. The core holder suitable for tight sandstone wetting regulation according to claim 1, wherein an annular cavity (402) is arranged between the outer wall of the rubber sleeve (4) and the inner walls of the left barrel (1) and the right barrel (2), the outer wall of the right barrel (2) is fixedly connected with a liquid inlet pipe (403) and a liquid outlet pipe (404) which are communicated with the annular cavity (402), and a control valve is arranged on the liquid outlet pipe (404).

4. The core holder suitable for tight sandstone wetting regulation according to claim 3, wherein the control valve comprises a valve switch (405), and the valve switch (405) is connected to the drain pipe (404).

5. The core holder suitable for tight sandstone wetting regulation according to claim 1, wherein the surfaces of the left barrel (1) and the right barrel (2) which are jointed are provided with sealing gaskets (306), and the two groups of sealing gaskets (306) are tightly jointed.

6. The core holder suitable for tight sandstone wet adjustment according to claim 1, wherein the insertion rod (3) is provided with limiting sliding grooves (304) on both sides of the groove (301), a limiting plate (305) is connected on each limiting sliding groove (304) in a sliding manner, the clamping block (303) is fixedly connected on each limiting plate (305), and the first spring (302) is fixedly connected between each limiting plate (305) and the groove (301).

7. The core holder suitable for tight sandstone wet conditioning according to claim 1, wherein the left pressure cap (101) is detachably connected with the left barrel (1) through a first mounting bolt (102), and the right pressure cap (201) is detachably connected with the right barrel (2) through a second mounting bolt (202).

8. The core holder suitable for tight sandstone wetting adjustment according to claim 3, wherein a limiting disc (504) is fixedly connected to the outer wall of each of the two groups of screw rods (501), two groups of sealing rings (506) are symmetrically and slidably connected in the annular cavity (402), a connecting rod (505) is fixedly connected to each of the two groups of sealing rings (506), and one end of each of the two groups of connecting rods (505) which respectively penetrate through the outer walls of the left barrel (1) and the right barrel (2) is rotatably connected to the limiting disc (504).

9. The core holder suitable for tight sandstone wetting adjustment according to claim 8, wherein a guide sliding groove (507) is embedded in the limiting disc (504), the guide sliding groove (507) is arranged in a T shape, and the connecting rod (505) is rotatably connected to one end of the limiting disc (504) and is slidably connected in the guide sliding groove (507).

10. The core holder suitable for tight sandstone wetting regulation is characterized in that a first hollow cavity (6) is formed in the plug head (5), a second hollow cavity (602) is formed in the screw rod (501), the first hollow cavities (6) are communicated through a first rotary joint (601) arranged on the plug head (5), a second rotary joint (603) is arranged at one end of each of the two groups of rocking rods (503), and a pipeline (604) communicated with the second hollow cavities (602) is connected to the second rotary joint (603).