The present disclosure provides an experimental device for simulating the erosion of a tubing string caused by sand production. The experimental device includes an autoclave, a circulating assembly, a power assembly, a monitoring assembly, or a three-phase feeding assembly. The circulating assembly is sealed and arranged in the autoclave, the circulating assembly includes a circulation loop formed by straight pipes and elbows. The power assembly includes a pump arranged on the circulation loop. The monitoring assembly includes a flowmeter and a temperature and pressure sensor for detecting the circulation loop, and the temperature and pressure sensor is communicatively connected with a PC. The three-phase feeding assembly includes a feeding pipe that is in fluid communication with the circulation loop, and the feeding pipe is connected with one or more gas tanks, a sander feeder, and one or more liquid tanks, respectively.

A horizontal jet-mechanical combined rock breaking test device and method. The device includes a horizontal base. One end of the horizontal base is provided with a multi-mode cutter head. A jet-mechanical combined cutter is provided on the multi-mode cutter head. The other end of the horizontal base is provided with a surrounding rock stress simulation bin for loading a rock sample. The multi-mode cutter head is connected to a driving mechanism, and the multi-mode cutter head is configured to advance and rotate horizontally along the horizontal base under the action of the driving mechanism, so that the jet-mechanical combined cutter is capable of acting on the rock sample.

An air pressure-machine vision based system for measuring a rheological property of a viscoelastic material includes a machine body, a lifting experiment table system, an air pressure generation control system, an image collection system, and a controlling and information processing system, where the lifting experiment table system, the air pressure generation control system, the image collection system and the controlling and information processing system are mounted on the machine body; the lifting experiment table system includes a lifting table stepping motor, an L-shaped lifting table and a lifting table motor driver, and the lifting table motor driver is connected to the lifting table stepping motor and configured to drive the lifting table stepping motor; and the lifting table stepping motor is connected to the L-shaped lifting table and configured to control lifting of the L-shaped lifting table.

A horizontal jet-mechanical combined rock breaking test device and method. The device includes a horizontal base. One end of the horizontal base is provided with a multi-mode cutter head. A jet-mechanical combined cutter is provided on the multi-mode cutter head. The other end of the horizontal base is provided with a surrounding rock stress simulation bin for loading a rock sample. The multi-mode cutter head is connected to a driving mechanism, and the multi-mode cutter head is configured to advance and rotate horizontally along the horizontal base under the action of the driving mechanism, so that the jet-mechanical combined cutter is capable of acting on the rock sample.

The present disclosure provides an experimental device for simulating the erosion of a tubing string caused by sand production. The experimental device includes an autoclave, a circulating assembly, a power assembly, a monitoring assembly, or a three-phase feeding assembly. The circulating assembly is sealed and arranged in the autoclave, the circulating assembly includes a circulation loop formed by straight pipes and elbows. The power assembly includes a pump arranged on the circulation loop. The monitoring assembly includes a flowmeter and a temperature and pressure sensor for detecting the circulation loop, and the temperature and pressure sensor is communicatively connected with a PC. The three-phase feeding assembly includes a feeding pipe that is in fluid communication with the circulation loop, and the feeding pipe is connected with one or more gas tanks, a sander feeder, and one or more liquid tanks, respectively.

An air pressure-machine vision based system for measuring a rheological property of a viscoelastic material includes a machine body, a lifting experiment table system, an air pressure generation control system, an image collection system, and a controlling and information processing system, where the lifting experiment table system, the air pressure generation control system, the image collection system and the controlling and information processing system are mounted on the machine body; the lifting experiment table system includes a lifting table stepping motor, an L-shaped lifting table and a lifting table motor driver, and the lifting table motor driver is connected to the lifting table stepping motor and configured to drive the lifting table stepping motor; and the lifting table stepping motor is connected to the L-shaped lifting table and configured to control lifting of the L-shaped lifting table.

The present disclosure provides a continuous launcher including a pressing tube having a first hollow portion therein, a launch unit having a second hollow portion therein, disposed at a front side of the pressing tube in a spaced manner, and launching a launch object using air compression force, a piston supply unit provided at a rear side surface of the pressing tube, including a plurality of pistons therein, and supplying the pistons one by one, a piston loading unit connected to a rear end of the pressing tube, and moving the piston to a load position, and an operating fluid supply unit supplying an operating fluid to press forward the piston, wherein the launch unit includes a launch tube having a launch hollow portion with the launch object therein, and a diaphragm.

A friction and wear testing platform capable of simulating high-pressure, silt-containing and turbid submarine environment, including a tank, a loading device, a partition plate, a partition cylinder, a top sealing sleeve, a bottom sealing sleeve, a rotating shaft, an inner magnetic cylinder, an outer magnetic cylinder and a centering table. The partition plate and the partition cylinder divide an inner chamber of the tank into a test chamber and a pressure compensation chamber. The rotating shaft penetrates the pressure compensation chamber; two ends of the rotating shaft are sealed by the top and bottom sealing sleeves, respectively, as well as sealing bearings and rings therein. The loading device drives the rotating shaft to rotate, and the rotating shaft drives the inner magnetic cylinder to rotate. The centering table is driven through the magnetic coupling between the inner and outer magnetic cylinders to install a test piece.

A portable multifunctional tester for pollutant erosion effect, including a base, the ejection head of jacking device is provided with a container. The upper end and lower end of the sample are provided with an upper porous stone and a lower porous stone respectively. A metal cover plate is disposed on the upper porous stone. An ejector rod with a circular tray is fixed to the support. The stress controlled one-dimensional load test can be performed by putting weights on the circular tray. A pressure gauge is disposed on the ejector rod. A displacement meter is disposed on the top cover plate. The container has a water inlet and a water outlet connected to its inner chamber. The water inlet, circulating pump, accumulator and water outlet are connected by conduits. In addition, a unidimensional consolidation test and washing test method thereof is provided.

A friction and wear testing platform capable of simulating high-pressure, silt-containing and turbid submarine environment, including a tank, a loading device, a partition plate, a partition cylinder, a top sealing sleeve, a bottom sealing sleeve, a rotating shaft, an inner magnetic cylinder, an outer magnetic cylinder and a centering table. The partition plate and the partition cylinder divide an inner chamber of the tank into a test chamber and a pressure compensation chamber. The rotating shaft penetrates the pressure compensation chamber; two ends of the rotating shaft are sealed by the top and bottom sealing sleeves, respectively, as well as sealing bearings and rings therein. The loading device drives the rotating shaft to rotate, and the rotating shaft drives the inner magnetic cylinder to rotate. The centering table is driven through the magnetic coupling between the inner and outer magnetic cylinders to install a test piece.