Fracture, Bone
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EXAMPLE 8
A protected particle was formed of a base particle having an average diameter of 20 μm. The base particle is a hollow sphere having a shell thickness of 1 μm. The interior pressure in the hollow cavity of the base particle is 14.7 psi. The density of the base particle is 0.38 g/cc and the crush strength of the base particle is 1,500 psi. The outer surface of the base particle was coated with a PLGA by suspension deposition. The coating thickness was 18 μm. The protected particle had a crush strength of about 8000 psi. The protected particles were subjected to well conditions of 30,000 ppm brine solution at a pH of 7.5, a temperature of 90° C., and under 6,000 psi hydrostatic pressure. After about 12 hours and over the period of 2 hours thereafter, the base particles were fractured or crushed. The acoustic sound or emission created by the fractured or crushed base particles had a traceable harmonic resonant frequency peak at 3,000 Hz. As is evident from Examples 7 and 8, the protected particle can be tailored by using different sized base particles to create a certain frequency or range of frequencies when the base particle fractures or crushes.
EXAMPLE 10
A protected particle was formed of a base particle having an average diameter of 40 μm. The base particle is a hollow sphere having a shell thickness of 1 μm. The interior pressure in the hollow cavity of the base particle is 1000 psi. The density of the base particle is 0.39 g/cc. The outer surface of the base particle was coated with a PVA by suspension deposition. The coating thickness was 68 μm. The protected particle had a crush strength of about 8000 psi. The protected particles were subjected to well conditions of 10,000 ppm brine solution at a pH of 8, a temperature of 80° C., and under 6,000 psi hydrostatic pressure. After about 36 hours and over the period of 72 hours thereafter, the base particles were fractured or crushed. The acoustic sound or emission created by the fractured or crushed base particles had a traceable harmonic resonant frequency peak at 600 Hz. As is evident from Examples 9 and 10, the protected particle can be tailored by using certain pressures in the hollow cavity of the base particle to create a certain frequency or range of frequencies when the base particle fractures or crushes.
Example 1
High-Resolution Imaging Using Microseismic Events on DAS Data.
Using the high-frequency data recorded in DAS array to form high-resolution seismic images, which are used to image hydraulic fractures. The embodiment of this example has several advantages or prior systems, including: (a) Sensors are closer to the sources thus can provide much higher frequency comparing to traditional surface seismic data; (b) microseismic data generally carries frequency around 200 Hz while the surface seismic data is usually below 30 Hz. High-frequency data will improve the spatial-resolution of seismic images; (c) microseismic data have much stronger S-wave amplitude comparing to the surface seismic data, which is dominated by P-wave. S-wave is sensitive to the highly compliant fluids. Thus, the seismic attributes derived from the S-wave seismic images can be used to identify the fluid-filled hydraulic fractures; (d) DAS array forms much larger aperture (generally much greater than 2000 feet) comparing to traditional geophones (usually less than 2000 feet), while having much smaller spatial interval between the sensors. Those properties are ideal for producing high-resolution seismic images.
A velocity model is built using known-sources, such as (perforation shots) and microseismic events. Next microseismic events using geophone or DAS arrays are located. From this a reflection traveltime table between sources/sensors to the image voxels is computed. Next events on the DAS data are identified, provided they are located by geophones. The DAS data is then migrated to form a seismic image. Computations are then performed on the seismic attributes for fracture identification.
It is noted that there is no requirement to provide or address the theory underlying the novel and groundbreaking production rates, performance or other beneficial features and properties that are the subject of, or associated with, embodiments of the present inventions. Nevertheless, various theories are provided in this specification to further advance the art in this important area, and in particular in the important area of hydrocarbon exploration and production. These theories put forth in this specification, and unless expressly stated otherwise, in no way limit, restrict or narrow the scope of protection to be afforded the claimed inventions. These theories many not be required or practiced to utilize the present inventions. It is further understood that the present inventions may lead to new, and heretofore unknown theories to explain the conductivities, fractures, drainages, resource production, and function-features of embodiments of the methods, articles, materials, devices and system of the present inventions; and such later developed theories shall not limit the scope of protection afforded the present inventions.
The various embodiments of restimulation operations set forth in this specification may be used for various oil field operations, other mineral and resource recovery fields, as well as other activities and in other fields. Additionally, these embodiments, for example, may be used with: oil field systems, operations or activities that may be developed in the future; and with existing oil field systems, operations or activities which may be modified, in-part, based on the teachings of this specification. Further, the various embodiments set forth in this specification may be used with each other in different and various combinations. Thus, for example, the configurations provided in the various embodiments of this specification may be used with each other; and the scope of protection afforded the present inventions should not be limited to a particular embodiment, configuration or arrangement that is set forth in a particular embodiment, example, or in an embodiment in a particular Figure.
The invention may be embodied in other forms than those specifically disclosed herein without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive.
Example 1
Provided herein is an exemplary embodiment of workflow for tracking and registering a knee joint using markers that are drilled into the in tibia and femur of the knee joint in the patient and protrude out from their placement site. The placement of the marker in order to track and register the bones of the knee joint is an invasive procedure that damages the tissue at and around the knee joint. The marker is used in marker-based tracking to track and register the knee joint and in robot-assisted surgical systems. Such invasive fixation of markers to bones may lead to complications, infections, nerve injury, and bone fracture. The marker fixation may reduce the flexibility during the procedure as the protruding markers may get in the way during the procedure. The surgical procedure may take longer to fix the marker into place than a markerless approach.
EXAMPLE 13
A protected particle was formed of a base particle having an average diameter of 200 μm. The base particle is a hollow sphere having a shell thickness of 48 μm. The base particle was formed of degradable sodium silicate. The interior pressure in the hollow cavity of the base particle is 14.7 psi. The density of the base particle is 2.06 g/cc. The outer surface of the base particle was coated with a polylactic acid (PLA) by fluid bed spray coating. The coating thickness was 0.5 μm. The protected particle had a crush strength of over 12,000 psi. The protected particles were added to a proppant slurry and constituted about 0.5 wt. % of the proppant slurry. The proppant slurry with the protected particles was pumped into the fracturing zones of a well. The outer coating of PLA degraded by hydrolysis in the well and the rate of degradation only increased to an appreciable rate once the PLA encounters the higher temperatures within the deep well's fractures (around 60-100° C.), and thereafter degraded within 24 hours which exposed the readily degradable sodium silicate hollow spheres to the well pressure, thus being hydrostatically crushed.
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More about "Fracture, Bone"
These injuries can range in severity from a small hairline fracture to a complete break in the bone.
Bone fractures are commonly caused by trauma, such as a fall, car accident, or sports injury, but can also occur due to underlying conditions like osteoporosis.
Researchers in the field of bone fracture often utilize various equipment and software to study and analyze these injuries.
Some commonly used tools include: - Universal testing machines (e.g., Instron, MTS) - Used to measure the mechanical properties of bone, such as strength and stiffness. - Scanning electron microscopes (e.g., S-4800) - Provide high-resolution images of the bone structure for detailed analysis. - Texture analyzers (e.g., TA-XT Plus) - Assess the texture and mechanical properties of bone. - Micro-CT scanners (e.g., VivaCT 40) - Generate 3D images of bone structure and enable the study of bone microarchitecture. - Statistical analysis software (e.g., SPSS Statistics, versions 22.0 and 25) - Allows researchers to analyze data and draw insights from their studies.
Researchers in the field of bone fracture can leverage the power of PubCompare.ai, an AI-driven platform that helps locate optimal protocols from literature, preprints, and patents.
This tool ensures reproducibility and accuracy, allowing researchers to compare the latest techniques and products to find the best fit for their studies.
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