Suspension type testing device and method for water solubility of salt rock

A test device and a suspended technology, which is applied in the field of suspended salt rock water dissolution test devices, can solve the problem of low requirements, low requirements for salt cavity shape control, and inability to meet the requirements of the cavity building process and cavity design of salt cavern storage, etc. Problems, to achieve the effect of simple processing, simple and convenient operation, and convenient loading and unloading

Active Publication Date: 2017-06-13
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in China, the determination of cavity building parameters for salt cavern storage is mainly carried out according to the "Laboratory Test Methods and Requirements for Water Solubility of Salt Minerals" in the field of salt mining. There are obvious differences between underground salt mining and cavity building for salt cavern storage. The requirements for mining salt are low, and the requirements for the shape control of salt caverns are not high. The current experimental methods cannot meet the requirements of the cavity building process and cavity design of salt cavern storage.

Method used

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  • Suspension type testing device and method for water solubility of salt rock
  • Suspension type testing device and method for water solubility of salt rock
  • Suspension type testing device and method for water solubility of salt rock

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Embodiment 1

[0049] This embodiment provides a suspended salt rock water dissolution test device, the structure diagram of the device is as follows figure 1 and figure 2 shown.

[0050] The device includes a suspension unit and a fixed unit; wherein,

[0051] The suspension unit includes a pull rod 1, a first screw rod 2, a second screw rod 3 and a support rod 4; wherein, the first screw rod 2 and the second screw rod 3 are respectively located on both sides of the pull rod 1, and the top of the first screw rod 2 It is connected to one end of the pull rod 1, and the top of the second screw rod 3 is connected to the other end of the pull rod 1; the first screw rod 2 and the second screw rod 3 are respectively perpendicular to the pull rod 1;

[0052] The bottom of the first screw rod 2 and the bottom of the second screw rod 3 are respectively connected with the fixed unit; the strut 4 is located between the pull rod 1 and the fixed unit, connected with the first screw rod 2 and the secon...

Embodiment 2

[0061] The present embodiment provides a kind of suspended salt rock water dissolution testing method, and this method has used the device that embodiment 1 provides, and it comprises the following steps:

[0062] 1) Top dissolution test:

[0063] Take the tested rock core with a diameter of 10cm, cut the upper and lower sides of the core flat to obtain two opposite cut surfaces; then wrap the outside of the core (excluding these two opposite cut surfaces) with wax to prevent the core sample from The side of the rock was corroded, and the processed core was used as a sample for later use;

[0064] A section of the above-mentioned sample is fixed on the sample fixing ring 5 by a nut, and the fixed section of the sample to be tested can be kept parallel to or in the same plane as the ring surface of the sample fixing ring 5 during the fixing process.

[0065] After the sample is fixed, place the poles 4 on a 5000mL beaker (such as image 3 shown), the inside of the beaker is f...

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Abstract

The invention provides a suspension type testing device and method for the water solubility of a salt rock. The device comprises a suspension unit and a sample fixing unit; the suspension unit comprises a pull rod, a first screw rod, a second screw rod and a supporting rod, wherein the top of the first screw rod is connected with one end of the pull rod; the top of the second screw rod is connected with the other end of the pull rod; the bottom end of the first screw rod and the bottom of the second screw rod are connected with the fixing unit respectively; the supporting rod is located between the pull rod and the fixing unit; the first screw rod is connected with the second screw rod; the supporting rod can move along the rod directions of the first screw rod and the second screw rod. The invention further provides the method which utilizes the device to test the water solubility of the salt rock. According to the suspension type testing device and method provided by the invention, the requirements on cavity construction parameters of a salt cavern storage cavity construction design can be met, and an actual cavity construction condition of a salt cavern underground storage can be more accurately and conveniently simulated.

Description

technical field [0001] The invention relates to a suspended salt rock water-solubility test device and method, belonging to the field of water-solution cavity-making for salt cavern underground storage in petroleum and natural gas. Background technique [0002] Salt cavern underground storage is to use the thicker salt layer or salt dome underground to form a cave storage space through water dissolution in the salt layer or salt dome artificially to store oil and natural gas for peak shaving and strategic reserves. The key technology for the construction of salt cavern storage is salt cavern construction, which is the key to the success of the construction project. The size and shape of the cavity are mainly determined by geological conditions and construction techniques. Therefore, before building salt cavern storage, it is necessary to fully understand the structure, composition, water-soluble characteristics and other conditions of the salt layer, and study and design how...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/36G01N33/24
CPCG01N1/286G01N1/36G01N33/24
Inventor 朱华银张敏武志德丁国生郑得文石磊祁红林完颜祺琪垢艳侠冉莉娜孙春柳李康张刚雄魏欢信朝选刘军风
Owner PETROCHINA CO LTD
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