Southwest Petroleum University

Ming Zhou

Xiao Guo

Jingjing Ma

Linkai Li

Yi He

Tao Li

Li Zhou

Bing Kong

Changqing Jia

Pengkun Wang

Li Wei Wang

Jun Luo

Mao Liao

Ziming Shi

Juncheng Bu

Yinhua Gu

Shengyuan Wang

Rongjun Yi

Hongjun Tu

Peng'ao Peng

Yongqiang Shi

Binliang Jiang

Jinfeng Zhang

Hongchang Han

Liangliang Xia

Lan Wang

An X-ray-based test device for a plugging removal effect of a sulfur dissolvent on a sulfur deposition rock sample includes a constant speed and pressure pump, a first intermediate container, a second intermediate container, a first pressure transmitter, a core holder, a second pressure transmitter, a first electric pump, a third intermediate container, a back-pressure valve, a gas flow meter, an HS neutralization tank, a second electric pump, a back-pressure transmitter, a confining pressure transmitter, an X-ray generator, an X-ray detector and a thermotank. A sour gas sample is placed in the first intermediate container, and nitrogen is filled in the second intermediate container. The sulfur dissolvent is placed into the third intermediate container. A confining pressure inlet is formed in the core holder. The test device may be used for evaluating the plugging removal effect of the sulfur dissolvent injected into the sulfur deposition rock sample.

X-ray-based test device and method for plugging removal effect of sulfur dissolvent on sulfur deposition rock sample

The invention discloses a parallel device and method for high-precision determination of sulfur solubility under multiple influencing factors, and the device comprises an elemental sulfur absorption system, an elemental sulfur saturation system and a sulfur content determination system. The elemental sulfur absorption system is used to remove the dissolved elemental sulfur in the sour gas. The elemental sulfur saturation system is arranged in parallel to saturate sour gases at different temperatures and pressures at the same time. The elemental sulfur absorption system and the elemental sulfur saturation system are arranged in parallel. The sulfur content determination system is used to determine the total sulfur content of the parallel elemental sulfur saturation system and the elemental sulfur content in the sour gas after absorbing the elemental sulfur under the same conditions.

Parallel device and method for high-precision determination of sulfur solubility under multiple influencing factors

A high-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test is provided by the present disclosure, the equipment comprises an injection system, a high-temperature and high-pressure visual kettle, a pressure supply system, a data acquisition and analysis system, a fluid recovery system, and an injection branch pipe; the injection system comprises an ISCo micro-injection pump, an intermediate container, a thermostatic heating oven and a pressure meter; the intermediate container is arranged in the thermostatic heating oven, the ISCo micro-injection pump is connected to the intermediate container; the data acquisition and analysis system comprises a microscope, a high-brightness light source and a computer; the pressure supply system comprises an annular pressure tracking pump, a back pressure pump, a back pressure valve and a pressure gauge; the fluid recovery system comprises a wide neck flask with rubber stopper, a balance, a flowmeter and an exhaust gas absorber tank.

High-temperature and high-pressure equipment and method for microscopic visual sulfur deposit seepage test

The present invention disclosed a method for preparing a thickener for tight oil and gas reservoir, which relieves damages. The technical solution includes the following steps: putting a three-flask in ice; adding perfluoroalkyl alcohol, P-toluenesulfonyl chloride and pyridine; reacting for 3 h at 0-20&#xb0; C.; adding filter paper; ultrasonic dispersing for 1 h; removing the filter paper; washing the solution for 3-5 times by adding dilute hydrochloric acid to collect the intermediate product (I); adding 1,3-dihydroxy-propane-2-tert-butyl carbamate and the intermediate product (I) in another three-flask; adding potassium carbonate and N,N-dimethylformamide; reacting for 4 h at 40&#xb0; C. to collect the intermediate product (II); adding trifluoroacetic acid and methylene chloride into the intermediate product (II); reacting at 45&#xb0; C. for 2 h; extracting and vacuum drying; and adding 1,6-hexamethylene diisocyanate; reacting for 2 h to collect the final product (III).

Preparation method of supercritical carbon dioxide thickener for tight oil and gas reservoir

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Sichuan, China

Ming Zhou