Device and method for evaluating tackifying effect of polymer in supercritical carbon dioxide
A carbon dioxide, supercritical technology, used in measurement devices, flow characteristics, instruments, etc.
Active Publication Date: 2017-06-13
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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Problems solved by technology
At present, there is no domestic SC-CO 2 Experimental Study on Viscosity Characteristics of Fracturing Fluid
Method used
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[0044] Such as figure 1 As shown, the device for measuring the viscosity of supercritical carbon dioxide fracturing fluid includes: a kettle body 1, the kettle body 1 is a cuboid shell, and the cuboid shell surrounds a composite cavity, and a pair of observation windows 10 are symmetrically arranged in the middle of both sides of the kettle body 1, and the observation windows 10 are arranged to observe The purpose of window 10 is to allow light to pass through and observe the falling situation of aluminum ball 13 in kettle body 1; The whereabouts in the kettle body 1 is provided with a temperature sensor 6 and a pressure sensor 7, the temperature sensor 6 and the pressure sensor 7 are connected to the inside of the kettle body 1, and are respectively used to measure the temperature and pressure inside the kettle body in the experiment; the piston 9 is located at In the cavity, the piston 9 is driven upward by the hand rocker 8 to compress the space in the kettle body 1 and inc...
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The invention relates to a device for evaluating a tackifying effect of a polymer in supercritical carbon dioxide. The device for evaluating the tackifying effect of the polymer in supercritical carbon dioxide comprises a kettle which is a cuboid housing, wherein a chamber is defined by the cuboid housing, a pair of observation windows is symmetrically arranged in the middles of two sides of the kettle, a temperature sensor and a pressure sensor are arranged on the kettle, a piston is located in the chamber, and a reagent adding port is formed in the middle of the kettle and allows injection of a tackifier into the kettle; a magnetic stirring device and a ball feeding device are arranged at the top of the kettle, the ball feeding device is coaxial with and independent from the magnetic stirring device and communicated with the kettle through a pipe, and a ball is fed through the ball feeding device; a ball feeding device outlet switch is arranged on the ball feeding device. The device for evaluating the tackifying effect of the polymer in supercritical carbon dioxide is used for researching a tackifying mechanism of a supercritical carbon dioxide viscosity fracturing fluid, and technical support is provided for supercritical carbon dioxide fracturing construction.
Description
technical field [0001] The invention belongs to the technical field of unconventional oil and gas production stimulation, and in particular relates to a device and method for evaluating the viscosity-increasing effect of polymers in supercritical carbon dioxide, which are used to study the viscosity characteristics of supercritical carbon dioxide added with polymer viscosity-increasing agents. Background technique [0002] Supercritical carbon dioxide (SC-CO 2 ) fracturing is a new type of unconventional oil and gas reservoir stimulation technology. It has a series of advantages that cannot be compared with conventional hydraulic fracturing technology. means. [0003] However, SC-CO 2 It has the disadvantages of low viscosity and poor sand-carrying ability. To achieve SC-CO 2 For sand fracturing, viscosification measures must be taken to improve its sand-carrying capacity. The effective way to increase viscosity is to add SC-CO 2 Add polymer tackifier to SC-CO 2 Mixed...
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IPC IPC(8): G01N11/10
CPCG01N11/10
Inventor 孙文超孙宝江陈嘉辉刘钰文陈修平邓智铭潘少伟赵天华李庆超
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)