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The porosity meter is designed based on the Boyle's law two-chamber method. Gas is input into a reference chamber of known volume under a predetermined base pressure. Then, the gas in the reference chamber diffuses into the sample chamber of known volume containing the rock sample. The equilibrium pressure decreases, from which the volume of rock sample particles can be calculated. Then, the porosity is calculated by subtracting the particle volume from the total volume of the rock sample.
The principle of measuring the permeability of low-permeability rocks using the unsteady-state single-pulse decay method is that the pulse pressure signal in the upstream standard chamber acts on the upstream of the rock sample, and the fluid passes through the rock sample into the downstream standard chamber under the drive of this pulse pressure. The permeability is determined by measuring and recording the change of pressure difference between the upstream and downstream ends of the rock sample over time. In order to make the test results closer to the formation conditions, the instrument simulates the high temperature and high pressure conditions of the formation, so that the measured permeability is closer to the actual field conditions, making the permeability measurement more accurate.
This experimental instrument is designed based on Darcy's law for one-dimensional steady-state seepage. By setting a certain confining pressure and displacement pressure, the equipment automatically determines the steady-state seepage and records the upstream and downstream flow rates and pressures to calculate the core permeability. The equipment has a multi-range gas flow meter that automatically selects the appropriate range to improve measurement accuracy.
Experimental device for drilling fluid dynamic pollution and evaluation
Primarily used for dynamic physical simulation of conventional reservoir seepage processes and performance evaluation of in-well fluid reservoirs. It can complete dynamic filtration experiments of in-well fluids and core matrix damage experiments; it can also conduct the optimization of in-well fluids and reservoir protection research.
Automatic vacuum saturation device for core samples
The automatic vacuum saturation device for cores provides a pressurization system to achieve full liquid saturation of the core in the saturation liquid, thus preparing for the measurement of other parameters of the core.
Crack servo control grouting evaluation instrument
The crack width can be simulated from 0.1-10mm through an automatic control system for stepless adjustment, meeting the experimental requirements of simulating different crack widths; A 20T thrust electric cylinder applies a rigid load to achieve servo control of the crack;
High-temperature, high-pressure intelligent expansion tester
During oilfield construction, the water absorption and expansion of rock minerals have an adverse impact on oilfield exploration and development. To better understand the compatibility between working fluids and reservoirs, an expansion rate test is conducted to obtain accurate shale expansion rate parameters, providing a basis for working fluid configuration during oilfield construction and achieving the goal of protecting oil and gas layers.
High-temperature, high-pressure lubrication simulation test rig
The high-temperature, high-pressure lubrication simulation and evaluation system simulates the high-temperature, high-pressure conditions of the formation through simulation, simulates the drilling fluid loss during actual drilling, and analyzes the rotational and sliding friction between the drill string and the formation rock during drilling through experiments to evaluate the effectiveness of drilling fluid lubricants and the overall lubricity of the drilling fluid system.
High-temperature, high-pressure wellbore stability testing device
This device comprehensively considers various factors that cause wellbore instability (geological factors, engineering factors, and physicochemical factors). It can not only evaluate wellbore instability caused by shale expansion but also evaluate wellbore instability caused by drilling fluid erosion of formations, collapse of loose formations, and plastic deformation of salt formations.
High-temperature, high-pressure dynamic water loss tester
Simulates the wellbore fluid loss process in the wellbore annulus during drilling under circulating conditions; simulates the fluid shear process in the formation through the rotation of the inner and outer annulus structure driven by magnetic force. It features high simulation accuracy and accurate experimental data measurement. It is the recommended test instrument in industry standard SY/T6540-2002.
Dynamic shale pore pressure transmission experimental device
The instrument primarily analyzes the migration of drilling fluid and the transmission of pore pressure by studying the membrane efficiency of mud shale. The instrument can simulate mud circulation conditions. Its main functions are as follows: 1. Test the film-forming performance of drilling fluids with different activities and test their membrane efficiency
High-temperature, high-pressure PVT testing device
This device can measure the change in the density of stable foam drilling fluid over time under different temperature and pressure conditions. Based on the measurement results, the formula of the foam drilling fluid can be adjusted to meet the needs of drilling construction. The device can also evaluate the change in density of other drilling fluid systems with temperature and pressure.
High temperature and high pressure dynamic/static leak test instrument
The high-temperature, high-pressure dynamic/static leak plugging test instrument simulates the temperature of the leaking formation and the pressure difference during leak plugging, and establishes a physical module simulating different leaking formations, maximizing the simulation of leak conditions and leak plugging simulation system in drilling engineering.
Inclined well leakage model grouting evaluation instrument
The inclined well leakage model plugging evaluation instrument simulates the temperature, pressure, and fluid flow state of different leakage formations during drilling to the maximum extent, simulating the wellbore conditions of the leakage formation in drilling engineering, and evaluating the plugging effect of various plugging formulations. This is a testing instrument.
Simulated drilling and grouting test instrument
The simulated drilling process leak plugging test instrument is a new type of dynamic and static leak plugging test instrument. By simulating the temperature, pressure, and fluid flow state of different leaking formations during the drilling process, it simulates the wellbore conditions of leaking formations in drilling engineering to the maximum extent, and evaluates the leak plugging effect of various leak plugging formulas.
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Email:clkjxs@cnclkj.com
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Address: No. 8, Weiwu Road, Development Zone, Jingzhou City, Hubei Province
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