Fracture core holder with adjustable fracture width
A core holder and fracture width technology, applied in the field of oil and gas experiments, can solve the problems of limited application, the fracture parameters cannot be well matched with the actual reservoir, and the fracture width cannot be controlled and adjusted. The effect of uncontrollable parameters and simple device structure
Inactive Publication Date: 2019-02-22
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
None of the above methods can control and adjust the fracture width, resulting in a poor match between the fracture parameters and the actual reservoir, which limits the application of the experimental results
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[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0016] Such as Figure 1~2 As shown, a cracked core holder with adjustable fracture width, including: small pressure cap 1, pressure cap 2, taper sleeve 3, plug 4, cylinder body 5, rubber sleeve 6, support frame 7, rock 8 , crack displacement regulator 9, rock insert 10, PTFE pad 11 and metal pad 12, the cylinder body is located at the outermost side of the core holder, the rubber sleeve is located in the cylinder body, and the cross section at both ends of the rubber sleeve is circular , the cross-section of the middle part is square, and the core is composed of two rectangular rocks placed in the center of the rubber sleeve. The two ends of the core are respectively provided with left and right plugs, and then fixed by the left and right small pr...
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The invention discloses a fracture core holder with an adjustable fracture width. The fracture core holder comprises small pressing caps, a pressing cap, taper sleeves, plugs, a cylinder, a rubber sleeve, a support frame, rock, a fracture displacement adjuster, a rock insert, a tetrafluoromethane pad and a metal pad, wherein the cylinder is positioned on the outermost side of the core holder; therubber sleeve is positioned in the cylinder; the rock is arranged at a central position of the rubber sleeve, and left and right plugs are arranged at two ends, and the rock is further fixedly tightened by the left and right small pressing caps; the two ends of the rubber sleeve are connected with the taper sleeves; the tetrafluoromethane pad and the metal pad are arranged between the taper sleeves and the cylinder; the taper sleeves and the metal pad are pressed and sealed by the pressing cap fixed on the cylinder; the support frame is arranged between the rubber sleeve and the cylinder; measuring holes are formed in symmetrical positions of the upper and lower parts of the rubber sleeve, and the same small holes are formed in the end face of the rock; the rock insert is consolidated in the rock small holes by adopting super glue; and the fracture displacement adjuster is arranged on the cylinder and connected with the rock insert by virtue of the measuring hole and is used for respectively adjusting the positions of the upper and lower rock and further controlling and adjusting the fracture width between the upper and lower rock.
Description
technical field [0001] The invention belongs to the technical field of oil and gas experiments, and relates to a fracture core holder, in particular to a fracture core holder with adjustable fracture width. Background technique [0002] Natural or artificial fractures greatly increase the permeability of the reservoir, expand the controlled reserves of a single well, and make an important contribution to the production of oil and gas wells. Indoor core displacement experiments aimed at fractures are one of the most basic tasks in the development of fractured reservoirs. This type of experiment can reflect the flow law of oil and gas in fractured reservoirs. Potential tapping measures, etc. provide scientific basis. [0003] The displacement experiments for fractured reservoirs need to focus on two factors: firstly, the temperature and pressure of the rock in the ground need to be maintained during the experiment to ensure that the experimental rules are consistent with the ...
Claims
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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 郑军肖易航刘鸿博王可可
Owner CHENGDU UNIVERSITY OF TECHNOLOGY