Core assembly, measurement system and measurement method
A core and component technology, which is applied in the field of measurement system and core component for measuring the core proppant return rate, can solve the problems of complex operation and high measurement cost, and achieve the effect of simple operation and cost reduction
Active Publication Date: 2021-11-23
CHINA UNIV OF PETROLEUM (BEIJING)
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[0005] The invention provides a core component, a measurement system and a measurement method for measuring the core proppant return rate, which are used to solve the problems of high cost and complicated operation of the measurement of the core proppant return rate in the prior art
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[0046] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.
[0047] The core proppant reflux rate experimental measurement system used in the existing laboratory mainly adopts CT scanning method for measurement. During the reflow process, the CT scanning equipment scans the proppant in the core in stages according to the time node, so as to obtain the distribution map of the proppant in the core fracture during reflow, and then obtain the reflow...
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Abstract
The invention provides a core assembly for measuring the backflow rate of a core proppant, comprising: a casing, one end of the casing is provided with an opening and an end head is installed in the opening; a sleeve, two ends of the sleeve are provided with an inlet plug and an outlet Plug, the inlet plug is provided with a displacement medium injection port and a pressure monitoring port, the outlet plug and the end are fixed, and the outlet plug and the end are provided with a coaxial displacement medium discharge port, and the displacement medium injection port and discharge port are provided. The outlet is used to connect to the displacement medium pressurizing unit, and the displacement medium injection pressure monitoring port is used to connect to the pressure acquisition unit; the sleeve is provided with an inlet screen and a plunger in sequence along the direction from the inlet plug to the outlet plug. The plug-shaped core is provided with a simulated fracture, and the proppant-accommodating core is provided with a receiving cavity. The present invention also provides a measurement system and a measurement method. The invention is simple to operate, and the actual reflux rate of the proppant can be measured without CT scanning, thereby reducing the experimental cost.
Description
technical field [0001] The invention relates to the technical field of oil and gas field reservoir fracturing, in particular to a core assembly, a measurement system and a measurement method for measuring the return rate of a core proppant. Background technique [0002] In the development of oil reservoirs, low-permeability and ultra-low-permeability oil and gas resources are very rich, accounting for more than 70% of the total reservoir reserves. However, such oil and gas reservoirs are extremely dense and often require large-scale volume fracturing to form fluid Seepage channels in order to release the oil and gas resources in the reservoir. However, the fractures formed during the fracturing process will quickly close under the effective stress of the reservoir, resulting in a rapid decline in production after an increase, making it difficult to stabilize production. In order to solve this problem, proppant is often mixed into the fracturing fluid in field construction t...
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IPC IPC(8): G01N5/00
CPCG01N5/00
Inventor 陈浩周涛吴天鹏冯江荣樊怀才田亚凯朱怡晖张鉴常程
Owner CHINA UNIV OF PETROLEUM (BEIJING)