143 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.

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.

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.

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.

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.

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.

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.

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.