CN211292520U

CN211292520U - Cement sheath expansibility testing arrangement

Info

Publication number: CN211292520U
Application number: CN201921185192.2U
Authority: CN
Inventors: 张力伟
Original assignee: Harbin Taihang Xinglong Cement Co ltd
Current assignee: Harbin Taihang Xinglong Cement Co ltd
Priority date: 2019-07-25
Filing date: 2019-07-25
Publication date: 2020-08-18
Anticipated expiration: 2029-07-25

Abstract

The utility model discloses a cement sheath expansibility test device, including base, maintenance box, zone of heating, expansion ring, agitator motor, sample jar and sealing washer, the base is located the bottom of whole device, the base upper end is equipped with the sample jar, divide mud pipe upper end to connect in cement test mould, maintenance box one side is equipped with the zone of heating, kettle cover one side is equipped with the barometer, the kettle cover opposite side is equipped with the thermodetector, the stirring thick liquid outside is equipped with the cooling tube, cooling tube one side is equipped with the expansion ring, expansion ring one side is equipped with the dipperstick, dipperstick one side is equipped with the observation window. The utility model discloses pass through the expansion ring with cement in the curing box to cement test mould and maintain, measure the interval of expansion ring according to the dipperstick, obtain accurate inflation numerical value, through placing a plurality of test mold bottles, can get the calculation such as average value with the data in a plurality of test mold bottles after the test, increase test data's accuracy.

Description

Cement sheath expansibility testing arrangement

Technical Field

The utility model relates to a test equipment technical field particularly, relates to a cement sheath inflation capability test device.

Background

In the underground annular space, after the cement of the ordinary Portland oil well is hardened, the shrinkage rate of the volume of cement stone generated by chemical shrinkage can reach more than 4 percent, so that a small gap (or called as a micro-annular gap) is formed between a cement sheath and a casing or between the cement sheath and a stratum, the cementing quality between the cement and the casing and between the cement sheath and the stratum is influenced, and oil, gas and water channeling can be caused. Some researchers propose that micro-expansion cement slurry is developed by adding a certain amount of expansion materials, the chemical shrinkage of cement stones is reduced, the effect of sealing and channeling prevention is achieved, and therefore the well cementation quality is improved. Therefore, the expansibility of the cement paste has great influence on the interface cementing property of the annular set cement, and plays a crucial role in the quality of well cementation, whether the effective volume expansion can be generated after the cement paste is hardened is a key factor influencing the cementing quality between the set cement and the casing pipe and the stratum, and the expansibility of the cement ring can be measured, sampled and investigated by the device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a cement sheath inflation capability test device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a cement sheath expansion performance testing device comprises a base, a maintenance box, a heating layer, an expansion ring, a barometer, a temperature meter, a stirring motor, a sampling tank and a sealing ring, wherein the base is positioned at the bottom end of the whole device, the sampling tank is arranged at the upper end of the base, a taking port is arranged at the outer side of the sampling tank, a mold bottle is arranged at the inner side of the sampling tank, a mud separating pipe is connected at the upper end of the mold bottle, the upper end of the mud separating pipe is connected with a cement test mold, the maintenance box is arranged at the outer side of the cement test mold, the heating layer is arranged at one side of the maintenance box, an inner kettle body is arranged at one side of the heating layer, an isolation region is arranged between the heating layer and the inner kettle body, an outer kettle body is arranged at one side of the inner kettle body, the sealing ring is arranged between the sampling tank and the outer kettle body, a kettle cover is arranged at the upper end of, the utility model discloses a pressure gauge, including barometer, temperature measurement appearance, stirring pipe, transmission shaft, cooling tube one side are equipped with on the same vertical straight line, the barometer lower extreme is connected with the barometer, the temperature measurement appearance lower extreme is connected with the temperature tube, temperature measurement pipe one side is from last down being equipped with agitator motor, transmission shaft and stirring thick liquid in proper order, agitator motor, transmission shaft and stirring thick liquid are in, the stirring thick liquid outside is equipped with the cooling tube, cooling tube one side is equipped with the expansion ring, expansion ring one side.

Further, an outlet is formed in one side of the mud separating pipe and communicated with the mud separating pipe, and the mud separating pipe is communicated with the mold bottle.

Furthermore, one side of the mud distributing pipe is communicated with a cement test mold, and the measuring scale is fixedly connected with the cement test mold.

Further, the upper end of the kettle cover is provided with an inlet, and the inlet is communicated with the cement test mold through the kettle cover.

Furthermore, one end of the air pressure pipe is connected with the barometer in a threaded mode, and the other end of the air pressure pipe is communicated with the cement test mould.

Further, the thickness of the expansion ring is 0.2cm, the inner diameter of the expansion ring is 0.4cm, and the expansion ring is made of a high-molecular inorganic water-absorbing expansion material.

Furthermore, one end of the temperature measuring pipe is in threaded connection with the temperature measuring meter, and the other end of the temperature measuring pipe is arranged on the inner wall of the cement test mold.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model discloses an entry will need measured cement to add in the cement test mould, lead to a customs agitator motor earlier and drive the cement of transmission shaft operation stirring thick liquid in to the cement test mould and stir, heat treatment to it through the zone of heating, cement test mould one side has set up barometer and thermometer and can be used to real-time measurement atmospheric pressure and temperature, if the high accessible cooling tube of temperature cools down, realize the ring expansion performance of test cement under different temperature and different pressure, set up the expansion ring in the cement test mould, with cement contact expansion ring, maintain through the maintenance box, measure the interval of expansion ring through the dipperstick after a period, find the expanded accurate value.

(2) The utility model discloses can place a plurality of test mold bottles simultaneously in the sample jar, can get the calculation such as average value with the data in a plurality of test mold bottles after the test, increase test data's accuracy.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a cement sheath expansion performance testing device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a cement test mold of a cement sheath expansion performance testing device according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an outer kettle body of a cement sheath expansion performance testing device according to an embodiment of the present invention.

Reference numerals:

1. a base; 2. taking out the mouth; 3. an outer kettle body; 4. an inner kettle body; 5. an isolation region; 6. a curing box; 7. testing a cement mold; 8. a heating layer; 9. a kettle cover; 10. stirring the slurry; 11. an expansion ring; 12. a cooling tube; 13. a pneumatic tube; 14. a barometer; 15. a temperature measuring tube; 16. a temperature detector; 17. an inlet; 18. a transmission shaft 19 and a stirring motor; 20. an outlet; 21. a mud separating pipe; 22. a mold bottle; 23. a sampling tank; 24. an observation window; 25. Measuring a scale; 26. and (5) sealing rings.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a cement sheath expansion performance testing device according to an embodiment of the present invention includes a base 1, a curing box 6, a heating layer 8, an expansion ring 11, a barometer 14, a thermometer 16, a stirring motor 19, a sampling tank 23 and a sealing ring 26, wherein the base 1 is located at the bottom end of the whole device, the sampling tank 23 is arranged at the upper end of the base 1, a sampling opening 2 is arranged at the outer side of the sampling tank 23, a mold bottle 22 is arranged at the inner side of the sampling tank 23, a mud distributing pipe 21 is connected to the upper end of the mold bottle 22, the upper end of the mud distributing pipe 21 is connected to a cement test mold 7, the curing box 6 is arranged at the outer side of the cement test mold 7, the heating layer 8 is arranged at one side of the curing box 6, an inner kettle body 4 is arranged at one side of the heating layer 8, an isolation region 5 is arranged between the heating layer 8 and the inner kettle body 4, an outer kettle, be equipped with between the sample jar 23 and the outer cauldron body 3

sealing washer

26, 3 upper ends of the outer cauldron body are equipped with kettle cover 9, kettle cover 9 one side is equipped with barometer 14, the 9 opposite sides of kettle cover are equipped with

thermodetector

16, 14 lower extremes of barometer are connected with

pneumatic tube

13, 16 lower extremes of thermodetector are connected with temperature tube 15, temperature tube 15 one side is from last down being equipped with in proper order agitator motor 19, transmission shaft 18 and stirring thick liquid 10, agitator motor 19, transmission shaft 18 and stirring thick liquid 10 are in on same vertical straight line, the stirring thick liquid 10 outside is equipped with cooling tube 12, cooling tube 12 one side is equipped with expansion ring 11, expansion ring 11 one side is equipped with dipperstick 25, dipperstick 25 one side is equipped with observation window 24.

Through the above scheme of the utility model, divide mud pipe 21 one side to be equipped with export 20, the main effect of export 20 is with the cement outflow in the cement test mould 7, export 20 with divide mud pipe 21 to communicate, divide mud pipe 21 and mould bottle 22 to communicate, divide mud pipe 21 one side and cement test mould 7 to communicate, dipperstick 25 and cement test mould 7 fixed connection, kettle cover 9 upper end is equipped with entry 17, entry 17 communicates with cement test mould 7 through kettle cover 9, and kettle cover 9's main effect is to guarantee the gas tightness of whole device, 13 a head of pneumatic tube screw thread connection in

barometer

14, 13 another head of pneumatic tube communicates with cement test mould 7, expansion ring 11 thickness is 0.2cm, expansion ring 11 internal diameter is 0.4cm, expansion ring 11 adopts the inorganic expanded material that absorbs water of polymer, 15 a head of temperature measurement pipe and 16 threaded connection, the other end of the temperature measuring pipe 15 is arranged on the inner wall of the cement test mould 7.

When the utility model is used specifically, the cement to be measured is added into the cement test mould 7 through the inlet 17, the stirring motor 19 is firstly switched off to drive the transmission shaft 18 to operate the stirring paddle 10 to stir the cement in the cement test mould, the cement is heated through the heating layer 8, the barometer 14 and the temperature detector 16 are arranged on one side of the cement test mould 7 and can be used for measuring the air pressure and the temperature in real time, if the temperature is too high, the ring expansion performance of the cement under different temperatures and different pressures can be tested through the cooling pipe, the expansion ring 11 is arranged in the cement test mould 7, the cement is contacted with the expansion ring 11 and is maintained through the maintenance box 6, the distance between the expansion rings 11 is measured through the measuring scale after a period of time, and the accurate value of the expansion is calculated, the utility model discloses a plurality of test mould bottles 22 can be placed in the sampling tank 23 at the same time, the data in the plurality of test mould bottles 22 can be calculated such as averaging after the test, the accuracy of the test data is increased.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The cement sheath expansion performance testing device is characterized by comprising a base (1), a curing box (6), a heating layer (8), an expansion ring (11), a barometer (14), a thermometer (16), a stirring motor (19), a sampling tank (23) and a sealing ring (26), wherein the base (1) is positioned at the bottom end of the whole device, the sampling tank (23) is arranged at the upper end of the base (1), a taking opening (2) is formed in the outer side of the sampling tank (23), a mold bottle (22) is arranged on the inner side of the sampling tank (23), a mud distributing pipe (21) is connected at the upper end of the mold bottle (22), the upper end of the mud distributing pipe (21) is connected to a cement test mold (7), the curing box (6) is arranged on the outer side of the cement test mold (7), the heating layer (8) is arranged on one side of the curing box (6), an inner kettle body (4) is arranged on one side of the heating layer, an isolation area (5) is arranged between the heating layer (8) and the inner kettle body (4), an outer kettle body (3) is arranged on one side of the inner kettle body (4), the sealing ring (26) is arranged between the sampling tank (23) and the outer kettle body (3), a kettle cover (9) is arranged at the upper end of the outer kettle body (3), the barometer (14) is arranged on one side of the kettle cover (9), the thermometer (16) is arranged on the other side of the kettle cover (9), the lower end of the barometer (14) is connected with a pneumatic tube (13), the lower end of the thermometer (16) is connected with a temperature measuring tube (15), the stirring motor (19), the transmission shaft (18) and the stirring paddle (10) are sequentially arranged on one side of the temperature measuring tube (15) from top to bottom, the stirring motor (19), the transmission shaft (18) and the stirring paddle (10) are positioned on the same vertical straight line, and a cooling tube (12) is arranged on the, cooling tube (12) one side is equipped with expansion ring (11), expansion ring (11) one side is equipped with dipperstick (25), dipperstick (25) one side is equipped with observation window (24).

2. The cement sheath expansion performance testing device as claimed in claim 1, wherein an outlet (20) is provided at one side of the mud distribution pipe (21), the outlet (20) is communicated with the mud distribution pipe (21), and the mud distribution pipe (21) is communicated with the mold bottle (22).

3. The cement sheath expansion performance testing device as claimed in claim 1, wherein one side of the mud distribution pipe (21) is communicated with the cement test mold (7), and the measuring scale (25) is fixedly connected with the cement test mold (7).

4. The cement sheath expansion performance testing device as claimed in claim 1, wherein an inlet (17) is arranged at the upper end of the kettle cover (9), and the inlet (17) is communicated with the cement test mold (7) through the kettle cover (9).

5. The cement sheath expansion performance testing device as claimed in claim 1, wherein one end of the pneumatic tube (13) is connected to the barometer (14) in a threaded manner, and the other end of the pneumatic tube (13) is communicated with the cement test mold (7).

6. The cement sheath expansion performance testing device according to claim 1, wherein the expansion ring (11) has a thickness of 0.2cm, the expansion ring (11) has an inner diameter of 0.4cm, and the expansion ring (11) is made of a high molecular inorganic water-absorbing expansion material.

7. The cement sheath expansion performance testing device as claimed in claim 1, wherein one end of the temperature measuring pipe (15) is in threaded connection with the temperature measuring meter (16), and the other end of the temperature measuring pipe (15) is arranged on the inner wall of the cement test mold (7).