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公开(公告)号：US11624022B2
公开(公告)日：2023-04-11
申请号：US17863859
申请日：2022-07-13
发明人： Xiankang Zhong , Haonan Li , Zhi Zhang , Junying Hu , Li Zhou , Xi Yuan , Lingjie Li
IPC分类号： C09K8/54
摘要： The present invention discloses a preparation method for the plant-based nano corrosion inhibition bactericide for oilfield, comprising the following steps: Step 1. Prepare the aloin liquid; Step 2. Stir the carbon nanotube, hydroxyethyl methacrylate and acrylic acid to react for 4 h at a constant temperature of 80° C. to get the carbon nanotube after fiber treatment, namely the modified carbon nanotube; Step 3. Mix the aloin liquid with imidazoline-ammonium-salt, add acetonitrile, and then add modified carbon nanotube, increase the temperature to 95° C. stir and react for 12 hours, and filter after naturally cooling down to room temperature and get the carbon nanotube loaded with bactericide; Step 4. Stir the carbon nanotube loaded with bactericide, diphenylmethane diisocyanate and polycaprolactone to react for 6 hours at a constant temperature of 95° C. and in the reaction process, continuously inject helium to get the target bactericide.
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公开(公告)号：US11378501B2
公开(公告)日：2022-07-05
申请号：US16828981
申请日：2020-03-25
发明人： Zhi Zhang , Yuanjin Zhao , Duo Hou , Nan Cai , Xiankang Zhong , Pengfei Sang , Jian Ding , Jinming Liu , Jiawei Wang
摘要： A rotary fatigue tester with complex loads includes a pump, a first motor, a second motor, a circulatory loop, an experimental kettle body, and a holding device. The experimental kettle body is a cylindrical tank, the circulatory loop is located on the experimental kettle body, a pump is located within the circulatory loop and is connected with a corrosive gas pipeline; the holding device is located within the experimental kettle body for fixing a test piece, a force-bearing pole is located at one side of the experimental kettle body for applying a shear force to the test piece, the holding device and the force-bearing pole are connected with the first motor and the second motor respectively. The rotary fatigue tester is able to simultaneously apply the axial alternating load and tangential alternating load to the test piece, for simulating the force of the test piece under complex loads.
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公开(公告)号：US20210231520A1
公开(公告)日：2021-07-29
申请号：US17229802
申请日：2021-04-13
申请人： Southwest Petroleum University , Engineering Technology Research Institute, Southwest Oil and Gas Field Company of Petro China
发明人： Zhi Zhang , Duo Hou , Huali Zhang , Yufei Li , You Wu , Lin Zhang , Wei Luo , Chuanlei Wang , Xiankang Zhong , Pengfei Sang
摘要： A sealing integrity evaluation device for high-temperature and high-pressure casing-cement ring-formation and a method thereof are provided. the device includes: a high-temperature autoclave, a temperature and pressure control system, and a casing-cement-formation combination; wherein the autoclave realizes alternating temperature and pressure during the experiment; the control system monitors, controls and records the temperature and pressure data; the combination simulates a full size or a compact size casing-cement-formation of a well. Casing-cement-formation combination samples are designed and prepared by simulating working conditions such as alternating temperature, pressure, and casing internal pressure, by testing the channeling and leakage pressure of the first interface and the second interface of combination, analyzing the shape and size of the internal defects, testing the compressive strength, provided a more stable and reliable experimental method and data support for the detection of cementing sheath sealing ability and the evaluation of sealing integrity.
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公开(公告)号：US20200225135A1
公开(公告)日：2020-07-16
申请号：US16828981
申请日：2020-03-25
发明人： Zhi Zhang , Yuanjin Zhao , Duo Hou , Nan Cai , Xiankang Zhong , Pengfei Sang , Jian Ding , Jinming Liu , Jiawei Wang
摘要： A rotary fatigue tester with complex loads includes a pump, a first motor, a second motor, a circulatory loop, an experimental kettle body, and a holding device. The experimental kettle body is a cylindrical tank, the circulatory loop is located on the experimental kettle body, a pump is located within the circulatory loop and is connected with a corrosive gas pipeline; the holding device is located within the experimental kettle body for fixing a test piece, a force-bearing pole is located at one side of the experimental kettle body for applying a shear force to the test piece, the holding device and the force-bearing pole are connected with the first motor and the second motor respectively. The rotary fatigue tester is able to simultaneously apply the axial alternating load and tangential alternating load to the test piece, for simulating the force of the test piece under complex loads.
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