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Coring device for oil sandy core

A technology for coring device and oil sandstone, which is applied in the direction of extracting undisturbed cores, earthwork drilling, etc., can solve the problems of inability to meet the requirements of batch coring, shortening the coring time, and high labor costs, and achieves high coring efficiency and low cost. , the effect of improving the efficiency of coring

Active Publication Date: 2015-12-30
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the prior art, the present invention provides a coring device for oil sand cores, the purpose of which is to solve the problems of low coring efficiency, high labor cost and Unable to meet the problem of batch coring, it can effectively shorten the coring time and reduce labor costs without affecting the quality of coring, and can meet the requirements of automatic or semi-automatic batch coring

Method used

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  • Coring device for oil sandy core
  • Coring device for oil sandy core
  • Coring device for oil sandy core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Such as figure 1 and figure 2 As shown, according to an embodiment of the coring device 1 of the oil sand core of the present invention, it includes an in-situ rock core 11, a horizontal cutter 12 and a vertical cutter 13, and also includes a coring barrel 14 and a coring column 15 , one end of the core cylinder is in the shape of a blade 16, the core cylinder 14 and the vertical cutter 13 work together to cut the in-situ rock core 11, the diameter of the core cylinder 15 is the same as that of the oil The sandstone cores 17 are of equal diameter.

[0070] The core barrel is made of stainless steel. The overall height of the core barrel is 76mm, the outer diameter is 43.5mm, the inner diameter is 38.5mm, and the wall thickness is 2.5mm. One end of the core barrel is blade-shaped and the height is 15mm. The core column is made of aluminum alloy, the height of the core column is 76mm, and the diameter is 38mm.

[0071] Such as Figure 10 As shown, the coring method o...

Embodiment 2

[0079] According to another embodiment of the coring device for oil sand cores of the present invention, its structure, coring principle and coring method are all the same as in Embodiment 1, the difference is: the core cylinder is made of aluminum alloy material, The overall height of the core barrel is 50mm, the outer diameter is 30.5mm, the inner diameter is 25.5mm, and the wall thickness is 2.5mm. One end of the core barrel is blade-shaped and the height is 10mm. The core column is made of aluminum alloy material, the height of the core column is 50mm, and the diameter is 25mm.

Embodiment 3

[0081] Such as image 3 As shown, according to another embodiment of the coring device for oil sand cores of the present invention, its structure and coring principle are the same as those in Embodiment 1, except that it also includes a support assembly 2, an in-situ core assembly 3, a The core barrel assembly 4 and the weight assembly 5.

[0082] Such as Figure 4 As shown, the support assembly 2 includes a workbench 21 , a support plate 22 , a guide rail 23 and a slip ring 24 , and the support plate 22 is vertically connected to the workbench 21 . In the process of making oil sand core, the workbench can be used to support the in-situ core assembly, core barrel assembly and weight assembly; the slip ring has a certain length, and the slip ring can move freely on the vertical guide rail during normal operation; The guide rail 23 is arranged on the support plate 22, and is vertically connected between the guide rail 23 and the workbench 21; the slip ring 24 is arranged on th...

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Abstract

The invention discloses a coring device for an oil sandy core. The coring device comprises an in-situ core, a horizontal cutter, a vertical cutter, a coring barrel and a coring column, wherein the coring barrel and the vertical cutter act together to cut the in-situ core; the diameter of the coring column is equal to that of the oily sandy core. The coring device further comprises a support, an in-situ core component, a coring barrel component and a weight component, and also comprises a control system and a sensor, wherein the control system is connected with the sensor by virtue of a wire. The coring device is simple in structure, high in coring efficiency and low in cost and can meet the automatic batched coring requirement, and the operation is performed by use of the control system, so that the coring process is relatively accurate, the prepared oil sandy core shape is complete, various physical parameters are favorable and the coring device is applicable to a triaxial experiments.

Description

technical field [0001] The invention belongs to the technical field of petroleum drilling, and in particular relates to a coring device for oil sand cores. Background technique [0002] Oil sand is an unconventional crude oil-bearing sandy deposit composed of sand, bitumen, minerals, clay and water combined with each other. The general term for the mixture formed, the composition of oil sands in different regions is different, among which bitumen is the main component, and its content accounts for 1-20%. Oil sands are also known as tar sands, heavy oil sands, heavy oil sands or tar sands. [0003] Oil sand is loose and soft, and it is easy to scatter when taking cores, and it is not easy to form. So far, there is no good technology for producing oil sand cores. At present, liquid nitrogen coring technology is usually used to obtain core samples from oil sands. During the whole coring process, the oil sands are kept in a hard frozen state by liquid nitrogen to maintain th...

Claims

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Application Information

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IPC IPC(8): E21B25/00
Inventor 林伯韬高彦芳金衍庞惠文
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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