Methods include: forming a first mud filtercake with a first mud; and determining a relationship between an impinging jet of a fluid at varying pressures against a surface of the first mud filtercake to a first erosion characteristic of the first mud filtercake. In various embodiments, the methods can additionally include: using the first erosion characteristic to design an operation to remove a second mud filtercake formed or to be formed in a wellbore with a second mud.

A type of testing equipment for detecting the failure process of thermal barrier coating in a simulated working environment; it belongs to the field of simulated special working environment equipment. Testing equipment includes testing platform equipped with static or dynamic specimen holding apparatus, simulated module of working environment, real-time detection module, control panel. This invention is capable of simulating a high temperature, erosive, corrosive working environment for thermal barrier coated turbine blade of aero-engines; simulate high speed spinning working environment for thermal coated blade, simulate static working environment for guiding blade; perform real-time testing of temperature field, 3-D displacement field, crack initiation and expansion, surface oxidation, etc. This invention has achieved complete integration of high temperature, erosive, corrosive working environment for thermal barrier coating and complete integration static or dynamic working environment, complete integration of simulated working environment and real-time testing, thus providing a crucial testing platform and reference data to properly understand the failure mechanism of thermal barrier coated blade and to improve relevant designs; strong applicability.

Provided is a device for testing a reaction between supercritical carbon dioxide and a rock. The device includes a carbon dioxide pressurization system, a reaction system, a contact angle test system and an observation system. The carbon dioxide pressurization system is configured to liquefy, heat and vaporize an initial carbon dioxide gas to obtain gaseous carbon dioxide. The reaction system is configured to regulate and control a temperature and pressure to change a state of the gaseous state to obtain supercritical carbon dioxide, and to enable the supercritical carbon dioxide to react with a sample. The contact angle test system is configured to convey a reaction residual water source and receive residual supercritical carbon dioxide, and to carry out a contact reaction of the residual supercritical carbon dioxide, the sample and the reaction residual water source.

Disclosed is a system capable of simultaneously performing a thermal test, an electrical test, and a mechanical test in an environment similar to the installation environment of a dynamic cable. The system includes a seawater tank module configured to form a seawater environment for a test cable, a mechanical test module configured to perform mechanical aging of the test cable according to an actuator operation, an electrical test module configured to perform electrical aging of the test cable by applying a voltage to each of opposite ends of the test cable, a thermal test module configured to perform thermal aging by applying a current to a dummy cable formed independently of the test cable, and a control module configured to perform data input, control processing, monitoring, and storage of the seawater tank module, the mechanical test module, the thermal test module, and the electrical test module.

An environmental testing system for environmental testing with particulate matter, such as sand and dust, is disclosed. The testing system uses a feeder to feed precise amounts of particulate matter into an injector, which injects the particulate matter into the airflow leading to a test chamber with approximately the same velocity as the surrounding airflow. The feeder may be a loss-in-weight gravimetric feeder, and the injector may be a Venturi valve actuated by compressed air. The system also includes operator protection features, such as an exhaust fan that creates negative pressure when the door to the test chamber is opened, and when particulate matter is dumped into the system. A temperature control system heats and cools the airflow during tests, a pneumatic conveying system moves fluidized particulate matter into and out of the system, and a controller provides automatic control over the system.

Erosion test rigs are provided for propelling dust and/or particles at high velocity and providing variable temperature ranges, as well as methods of using and fabricating the same. The erosion test rig can propel dust and/or particles at a velocity of up to 400 meters per second (m/s) and generate wide temperature ranges (e.g., from 196 C. to 200 C.) to simulate the harsh erosive conditions of planetary environments (e.g., Mars and Luna).

A test panel assembly is configured to be used with multiple tests for a single component. The test panel assembly may include a main body, a first test section formed on the main body, and a second test section formed on the main body. The first test section is configured for a first test, and the second test section is configured for a second test that differs from the first test.

An apparatus 300 for simulating a pulsed pressure induced cavitation technique (PPCT) from a pressurized working fluid (F) provides laboratory research and development for enhanced geothermal systems (EGS), oil, and gas wells. A pump 304 is configured to deliver a pressurized working fluid (F) to a control valve 306, which produces a pulsed pressure wave in a test chamber 308. The pulsed pressure wave parameters are defined by the pump 304 pressure and control valve 306 cycle rate. When a working fluid (F) and a rock specimen 312 are included in the apparatus, the pulsed pressure wave causes cavitation to occur at the surface of the specimen 312, thus initiating an extensive network of fracturing surfaces and micro fissures, which are examined by researchers.

A device for testing a low-temperature cavitation of an inducer and a test method are provided. The device includes an inducer cavitation test assembly, a first liquid storage tank configured for storing a liquid medium therein and having an outlet connected with an inlet of the temperature control assembly, and a temperature control assembly having an outlet connected with an inlet of the inducer cavitation test assembly. An outlet of the inducer cavitation test assembly is connected with an inlet of the first liquid storage tank. The temperature control assembly is configured for controlling the temperature of the liquid medium from the first liquid storage tank into the inducer cavitation test assembly. The inlet of the inducer cavitation test assembly is connected with a gas storage tank for conveying gas. The inducer cavitation test assembly is configured for testing an inducer.

A water-rich high-geostress strike-slip fault simulating test chamber includes a first chamber and a second chamber. A flexible chamber is fixedly connected between the first chamber and the second chamber; the flexible chamber includes a plurality of flexible fault connecting units; each of the flexible fault connecting units includes framework flanges, a rubber ring, and a steel plate nested in the rubber ring; the framework flanges are respectively fixed at two axial sides of the rubber ring; and two adjacent flexible fault connecting units are connected through a bolt device fixed on two adjacent framework flanges. According to the present disclosure, the flexible chamber includes a plurality of flexible fault connecting units. The framework flanges are configured to connect the plurality of flexible fault connecting units. The rubber ring is able to realize axial tensile deformation and horizontal shear deformation, as well as a sealing function under pressure.