146 results about "Measured depth" patented technology

A two-dimensional image is displayed and a grey level image is drawn on said two-dimensional image defining a depth map. A stereo image pair is generated based on the depth map and an anaglyph image of the stereo image pair is displayed. Edits of the depth map are displayed by anaglyph image. A plurality of projection frames are generated based on the depth map, and interlaced and printed for viewing through a micro optical media. Optionally, a layered image is extracted from the two-dimensional image and the plurality of projection frames have an alignment correction shift to center the apparent position of the image. A measured depth map is optionally input, and a stereo pair is optionally input, with a depth map calculated based on the pair. The user selectively modifies the calculated and measured depth map, and the extracted layers, using painted grey levels. A ray trace optionally modifies the interlacing for optimization to a particular media.

An improved solution for generating depth maps using time-of-flight measurements is described, more specifically a time-of-flight imager and a time-of-flight imaging method with an improved accuracy. A depth correction profile is applied to the measured depth maps, which takes into account propagation delays within an array of pixels of a sensor of the time-of-flight imager.

The invention relates to a sensing method and a device for micro inner cavity size and three-dimensional coordinate based on two-dimensional micro-focus collimation, belonging to the technical filed of precise instrument manufacture and measurement, in particular to a sensing method and a device for micro and complex inner cavity size and three-dimensional coordinate in the filed of sub-macroscopy, which is especially suitable for the three-dimensional detection of blind holes with large depth-diameter ratio. The device combines a micro spherical biconvex lens and an optical fiber probe measuring rod, and establishes a point light two-dimensional micro-focus collimation imaging light path by using the micro spherical biconvex lens, thereby realizing the high magnification and the sensing for the three-dimensional displacement of the optical fiber probe measuring rod by utilizing the light path. The invention has the characteristics of small measured force of a single optical fiber probe, easy miniaturization, large measured depth-diameter ratio, simple system structure, good real-time performance, easy practical application, and has obvious advantages for carrying out the quick and ultra-precise measurement and calibration for the inner cavity micro-size and the three-dimensional coordinate. Especially, the top of the resolution capability can reach the deep sub-nanometer magnitude, and an absolute zero position exists in the three-dimensional measurement direction.

A surface processor uses an environmental profile to determine the sub-surface length of tubing disposed in a well bore. Information relating to tubing properties is stored in a memory module of the surface processor. The environmental profile includes data relating to well bore ambient conditions and the operating parameters of well equipment. Surface processor calculates the tubing elongation or length reduction corresponding to the environmental profile. Surface processor may repeat this process to develop a measured depth chart for a well. Logging operations performed in conjunction with the sub-surface length calculations allows formation data to be associated with the measured depth chart.

Methods for installing tubulars (for example, conduits, casing or liners) into a highly deviated wellbore are disclosed. In a first embodiment, the method comprises a) drilling the well to the planned total depth of the interval, b) placing a first fluid into the wellbore below a prescribed measured depth in the high-angle portion of the wellbore, said first fluid having a density that causes the portion of the tubular that extends into the first fluid to become substantially neutrally buoyant, c) placing a second fluid into the wellbore above the prescribed measured depth, said second fluid having a density less than said first fluid, d) plugging the distal portion of the tubular with a lower plug (or check valve) and an upper plug, e) as the tubular is run into the wellbore, placing a lightweight fluid into the plugged section of tubular and a heavy fluid above the plugged section of tubular, and f) running the tubular into the wellbore to the planned total depth.

The invention relates to a sensing method and a device for micro inner cavity and two-dimensional coordinate based on one-dimensional micro-focus collimation, belonging to the technical filed of precise instrument manufacture and measurement, in particular to a sensing method and a device for micro and complex inner cavity structure size and two-dimensional coordinate in the filed of sub-macroscopy, which is especially suitable for the measurement of micro-holes with large depth-diameter ratio. By using the structure characteristics of super large curvature and micro-cylindrical lens of an optical fiber probe measuring rod, a point light source one-dimensional micro-focus collimation imaging light path is established, thereby realizing the high magnification and the sensing of the two-dimensional displacement of the optical fiber probe measuring rod by utilizing the light path. The invention has the characteristics of small measured force of a single optical fiber probe, easy miniaturization, large measured depth-diameter ratio, simple system structure, good real-time performance, easy practical application, and has obvious advantages for carrying out the quick and ultra-precise measurement and calibration for the inner cavity micro-size and the two-dimensional coordinate. Especially, the top of the resolution capability can reach the deep sub-nanometer magnitude, and an absolute zero position exists in the two-dimensional measurement direction.

The present invention is directed to a mechanism and method for providing base end plunge router depth adjustment, such as when a router is utilized with a router table. The apparatus and method of the present invention permits accurate and efficient depth adjustment when utilizing a router with a router table. A router depth adjustment device includes an adjustment knob and indexer, so users are provided with the ability for measured depth adjustment.

The present invention is one kind of pile hole calipers. Each of several pieces of upper test strips is hinged to the lower end of the test tube at its one end and hinged to one end of one corresponding lower test strip, and the outer ends of the lower test strips and hinged to form an umbrella shaped structure. The test rope is passed through the test tube and connected to the movable hinging point of the lower test strips. Some positioning rod is mounted to the upper end of the test tube. After the test tube is descended to the measured depth, test rope is pulled to drive upwards the lower ends of the lower test strips so that the hinged point between the upper and the lower test strips moves horizontally and the test strips expand to contact the hole wall.

A method for determining depth in a wellbore uses inertial navigation in conjunction with a database having one or more measured parameters correlated with depth. The measured parameter may be the lengths of stands forming a drill string, prior survey data relating to a naturally occurring feature such as formation lithology, or data relating to a human made feature such as collars in a casing string. The downhole processor may use accelerometer measurements to calculate a measured depth of a BHA and access the database to retrieve a predicted depth that corresponds with one or more sensor measurements (e.g., motion indicating the addition of a stand to a drill string). Thereafter, if the downhole processor determines that the predicted depth is in agreement with the calculated depth, the processor stores the predicted depth and / or associates the predicted depth with directional surveys taken along the wellbore.

The invention belongs to the field of petroleum engineering and particularly relates to a device for improving the oil and gas well drilling speed. The device for improving the oil and gas well drilling speed comprises a mandrel body, a spline outer barrel, a spring protection barrel, a spring assembly, a spring lower plugging connector, a piston assembly and a pressurization assembly outer barrel, and is characterized in that the mandrel body is connected with the piston assembly in a threaded mode, the spline outer barrel, the spring protection barrel, the spring lower plugging connector and the pressurization assembly outer barrel are connected together through threads, and the spring assembly is arranged in the spring protection barrel. Energy for working of the device is provided by vibration of a drill stem and is increased along with the increase of the depth of a well, and the adverse effect of vibration is reduced by the working process of the device; by adopting the device, both the rock breaking efficiency and the well bottom cutting carrying effect are improved; the device is simple in structure and stable in performance, and other risks will not be caused by drilling operation when the device is used; the structure of the drill stem does not need changing, normal use of the device will not be affected by the types of drills, and therefore the device is wide in application range and convenient to popularize and use.

An apparatus and method for correcting a depth image of an object based on a table, the table being formed according to color identification information of a target color, and a first measurement error in which a difference between a ground truth depth value of a base color and a measured depth value of the target color is reflected.

A method of operating a plurality of sensors of a user device includes detecting input using a user input means, measuring a depth value between the user input means and a screen of the user device, activating a gesture recognition function by selectively driving one or more of the plurality of sensors based on the measured depth value, and recognizing a user gesture based on pieces of information collected by the selectively driven sensors.

A method and apparatus for measuring the bore diameter of a hole as a function of hole depth is disclosed. In one embodiment, the apparatus comprises a diametric probe, for generating first measured bore diameter data along a diametric probe sensitive axis; a foot, for positioning the diametric probe sensitive axis in a plane parallel to the hole; a linear distance probe, coupled to the diametric probe, for generating first measured depth data describing the depth of the diametric probe sensitive axis within the hole; and a data acquisition system, for recording first measured bore diameter data from the diametric probe and first measured depth data from the linear distance probe of an insertion of the diametric probe into the hole.

The invention discloses an underwater fixed-depth and fixed-height towing device which is provided with an underwater carrier, wherein the underwater carrier is connected with a cable winding / unwinding device by a cable, a probe of a depth measuring transducer is arranged on the underwater carrier, an output signal of the probe of the depth measuring transducer is connected with a display and control terminal by a cable, and a control signal output by the display and control terminal is used for controlling the cable winding / unwinding device. The underwater fixed-depth and fixed-height towing device does not need power and is low in cost, the probe of the depth measuring transducer can acquire depth from the towed carrier to the water surface or height from the towed carried to the water bottom in real time, the display and control terminal can control the cable winding / unwinding device according to measured depth from the towed carrier to the water surface or the height from the towed carrier to the water bottom, and the depth or the height of the towed carrier can be compensated and regulated in real time through the winding / unwinding for the cables and control on a navigational speed of the cable winding / unwinding device, so that the depth of immersion and underwater height can be controlled, so as to realize accurate measurement and detection in underwater fixed-depth and fixed-height towing.

A method includes measuring a depth of a shallow trench isolation (STI) region below a surface of a substrate. The STI region is filled with an oxide material. The substrate has a nitride layer above the surface. A thickness of the nitride layer is measured. A first chemical vapor etch (CVE) of the oxide material is performed, to partially form a recess in the STI region. The first CVE removes an amount of the oxide material less than the thickness of the nitride layer. The nitride layer is removed by dry etching. A remaining height of the STI region is measured after removing the nitride. A second CVE of the oxide material in the STI region is performed, based on the measured depth and the remaining height, to form at least one fin having a desired fin height above the oxide in the STI region without an oxide fence.

Methods for installing tubulars into a highly deviated wellbore may include a) drilling the well to the planned total depth of the interval, b) placing a first fluid into the wellbore below a prescribed measured depth in the high-angle portion of the wellbore, c) placing a second fluid into the wellbore above the prescribed measured depth, d) plugging the distal port ion of the tubular with a lower plug and an upper plug, e) as the tubular is run into the wellbore, placing a lightweight fluid into the plugged section of tubular and a heavy fluid above the plugged section of tubular, and f) running the tubular into the wellbore to the planned total depth. The first fluid has a density that causes the portion of the tubular that extends into the first fluid to become substantially neutrally buoyant, and the second fluid has a density less than the first fluid.

There is provided a system and method for providing a visualization of data corresponding to a physical structure, the data relating to a property that varies along a curved path. An exemplary method comprises defining the curved path by successively computing values for a position, a measured depth and an exit vector for a plurality of path points along the curved path. The exemplary method also comprises providing a visual representation corresponding to the data for the property.

This invention relates to a method for better simulating and measuring mud thickness and thickening time. And it solves the problem of discrepancy between the measured mud thickness and thickening time and the real situation. And it employs a supercharged consistometer with variable speed, and plasm cup rotary speed is infinite and its rotary speed ranges from ten to six hundred round per minute. The method is the following: first to determine the shearing circum-space speed according to injecting speed of mud plasm and theological characteristic of the oil well, then to determine the average shearing force and speed when consistometer special paddle rotates; finally to confirm the mud plasm thickening time and paddle stimulating speed. This invention can ensure the safety construction of oil well casing and cementing and the quality of well wall concretion and agglutination.

The present invention discloses a groundwater recirculation method for water source heat pump energy-saving air-conditioning cooling water system, and the pumped groundwater can be fully recirculated to an underground same water bearing bed. The present invention is characterized in that measurements of a recirculation well arranged in influence scope of precipitation of a pumping well, smoothed recirculation channel by the enhanced granular diameter of filling granules 4 provided between pipelines and a well hole, and secondary well cleanout dredging of the recirculation channel are adopted. Cooling water entries into a filtering layer by gaps of filtering pipes, and then smoothly entries into the underground water bearing bed, the problems of the easy taken out of the water and difficult recirculation ordinarily existed in the existing underground water source air heat pump air-conditioning system are thoroughly resolved. Meanwhile, the present invention has the characteristic of easy construction, and can be widely used for the underground water source heat pump energy-saving air-conditioning system currently vigorously promoted by the State and is suitable for the tailings clamped with a gravel layer of water bearing bed of the groundwater heat exchanging system of the ground source heat pump or the deep hole of large diameter with a depth within 100 m and the gravel layer.

The invention provides a pinnate branch well sidetracking and completion integration device and method using a coiled tubing carrying sieve tubes. The technical scheme relates to such devices as a tubing anchor, a diverter, the coiled tubing, a sieve tube separating device and a jet bit. The method comprises the steps of tripping in a tubing provided with the anchor and the diverter after the casing cementing of a main horizontal well section; tripping in the coiled tubing carrying the sieve tubes from the inside of the tubing after setting the direction and anchoring the tubular column; using abrasive jet flow to perform window sidetracking; when the sidetracking reaches the designed well depth of branch well holes, separating the sieve tubes from the separating device and leaving the sieve tubes in the branch well holes through ball throwing and pressure building in the coiled tubing; taking the coiled tubing from the well hole at the same time; performing the window sidetracking and ball throwing separation after adjusting the well depth and the direction of the tubing again. Thus, the drilling and completion integration process using the coiled tubing carrying the sieve tube for sidetracking is completed.

Tracking of measured depth with intervening depositing of one or more layers provides a way of improving the accuracy of surface reconstruction. For example, knowledge of the desired or expected thickness of each layer, in combination with the scan data is combined to yield higher accuracy than is available from scan data of a single scan alone. One application of such an accurate surface reconstruction is in a feedback arrangement in which the desired thickness of one or more subsequent layers to be deposited after scanning is determined from the estimate of the surface depth and a model of the object that is being fabricated, and by increasing accuracy of the surface depth estimate, the precision of the fabrication of the object may be increased.

The invention provides a calculation method of borehole sloughing pressure applicable to the bedding fractured stratum which belongs to the technical field of oil and natural gas exploitation and well drilling. The method comprises the steps of: in the simulated environment in different time after the drilling fluid soaking into the rock core, calculating the strength parameter of the weak side of the core, calculating the borehole collapsing force, setting the experimental liquid pressure based on the design density of the drilling fluid and the well depth, simulating the infiltration status of the rock core caused by the drilling fluid in different time, and measuring the cohesive force and internal friction angle of the core weak side after different moments of drilling fluid infiltration, by calculation obtaining the curve of collapsing force relative to the time under the condition of drilling fluid infiltration, determining the stability of the borehole, thereby optimizing the drilling fluid density of different moments. The method solves the problem of the reliance on experiences to regulate the drilling fluid density, can guarantee the drilling safety and reduces the drilling costs.

The invention discloses a while-drilling multi-parameter analysis-based oil-gas-water identification method. The method comprises the steps that chromatography signals of oil-gas-water in a reservoir stratum are acquired while drilling so that chromatograms are obtained; the cross-correlation function of the oil-gas-water chromatography on a continuous shaft depth and a standard chromatography and water-oil-gas characteristic parameters are obtained according to the chromatograms; and the cross-correlation function is subjected to Fourier inversion to obtain cross-correlation coefficients of any two chromatograms, and reservoir stratums or depths corresponding to the oil-gas-water chromatography signals are identified according to the changing direction of upper-and-lower-layer oil-gas-water features which are reflected by the amplitudes of the cross-correlation coefficients. According to the while-drilling multi-parameter analysis-based oil-gas-water identification method, gasometry chromatography is characterized in that the position of each component is known qualitatively after separation, and the chromatograms are regarded as spectrograms for analogy-analysis and calculation of correlations among the chromatograms and the three characteristic parameters representing the oil-gas-water features; reservoir stratum fluid features can be effectively identified; and the method especially has a very good effect for aquosity.

A method for determining depth in a wellbore uses inertial navigation in conjunction with a database having one or more measured parameters correlated with depth. The measured parameter may be the lengths of stands forming a drill string, prior survey data relating to a naturally occurring feature such as formation lithology, or data relating to a human made feature such as collars in a casing string. The downhole processor may use accelerometer measurements to calculate a measured depth of a BHA and access the database to retrieve a predicted depth that corresponds with one or more sensor measurements (e.g., motion indicating the addition of a stand to a drill string). Thereafter, if the downhole processor determines that the predicted depth is in agreement with the calculated depth, the processor stores the predicted depth and / or associates the predicted depth with directional surveys taken along the wellbore.

The invention relates to a method for correcting the depth trace of self-adapting well drilling, in particular to a new method for correcting the well depth trace of the well drilling, which belongs to the technical field of measurement well drilling. The method comprises the following steps: firstly, obtaining correction coefficients (K1, K2, K3, ... Kn) according to the variations of coded disc counts and the variations of a drilling tool corresponding to each layer of wire ropes of a winch; secondly, training the correction coefficients with observed well depth, and dividing the variance of observed values and measured values into three regions, wherein each region corresponds to zero, big and small fuzzy numbers, and each fuzzy number corresponds to weighting coefficients k1, k2 and k3; and thirdly, counting the variations of the correction coefficients simultaneously to obtain the variation trend Va of the correction coefficients. The trained correction coefficients can make the variations of the correction coefficients automatically trend to influences on the correction coefficients by various factors; and the depth of the well drilling measured by the method trends to the precision gradually, the measuring errors are attenuated quickly, and the errors generated by initial depth correction and error corrections of the correction coefficients caused by introducing error observed values are eliminated effectively.

The invention relates to a flight time sensing system and a ranging method thereof. The flight time ranging method comprises steps of: delaying detection light pulse frame by frame according to sequences of multiple detection frames; receiving reflection light after the detection light pulse is reflected by a to-be-tested object, and acquiring a plurality of initial depth values corresponding to the detection frames respectively; and selecting one of the plurality of initial depth values as an actually measured depth value of an output frame corresponding to the multiple detection frames according to a distance coefficient corresponding to the initial depth value, wherein the actually measured depth value is less than an initial depth value corresponding to a first detection frame, and theinitial depth value and the distance coefficient are in positive correlation. Through adoption of the flight time sensing system, interference of reflection light of multiple times can be weakened, and distance detection is more accurate.