Abstract: A chassis with built-in handles which do not add to dimensional clearance required for the chassis to be placed in a cavity includes a side plate, a mounting unit, and a handle. A mounting groove is defined on the side plate. The mounting unit is coupled to the side plate. The handle is partially clamped by the side plate and the mounting unit, and rotatably coupled with the side plate. By rotating the handle, the handle can be stored at least flush in the mounting groove.

Abstract: A locking assembly can lock a workpiece. The workpiece includes a locking hole. The locking assembly includes a housing, a movable component, and an unlocking handle. The movable component includes a sleeve, a pin, and an unlocking cover. The sleeve is mounted on the housing. The pin is accommodated in the sleeve, and a portion of the pin protrudes from the housing and accommodated in the locking hole. The unlocking cover is fixed to the pin. The unlocking handle is disposed between the unlocking cover and the sleeve. The unlocking cover can be pulled from a first direction to move the pin out of the locking hole; or the unlocking handle can be pulled from a second direction intersecting with the first direction, and the unlocking handle can abut against the unlocking cover to drive the pin to move out of the locking hole.

Abstract: A user input in a source language is received. A set of contextual data is received. The user input is encoded into a user input feature vector. The set of contextual data is encoded into a context feature vector. The user input feature vector and the context feature vector are used to generate a fusion vector. An adaptive neural network is trained to identify a second context feature vector, based on the fusion vector. A second user input in the source language is received for translation into a target language. The adaptive neural network is used to determine, based on the second context feature vector, a second user input feature vector. The second user input feature vector is decoded, based on the source language and the target language, into a target language output. A user is notified of the target language output.

Abstract: Disclosed herein are system, method, and computer program product embodiments for database management coordinators operated by a source server and a target server, respectively. The database management coordinator can be in a state selected from an initial state, a ready state, a transmission state, or a pause state. The database management coordinator operated by the source server can extract data in a first format stored in a first storage device and convert the data in the first format into a second format to be transmitted to the target serer. The database management coordinator operated by the target server can convert the data in the second format into a third format to be stored in a third storage device associated with the target server.

Abstract: In view of the problems of complex downhole conditions, low control precision of bottomhole pressure, low one-time success rate of well-killing and the like during a high-temperature and high-pressure deep well-killing operation, a well-killing operation wellbore flowing model is established according to measured data during throttled well-killing. The fluid distribution and flowing states in a wellbore annulus are analyzed in real time, and during a measured standpipe pressure deviation design, a pressure control value is calculated accurately in consideration of the effects of a pressure wave propagation speed and a back pressure application delay, and a throttle valve is automatically adjusted and automatically controlled to actuate.

Abstract: Disclosed herein are system, method, and computer program product embodiments for database management coordinators operated by a source server and a target server, respectively. The database management coordinator can be in a state selected from an initial state, a ready state, a transmission state, or a pause state. The database management coordinator operated by the source server can extract data in a first format stored in a first storage device and convert the data in the first format into a second format to be transmitted to the target serer. The database management coordinator operated by the target server can convert the data in the second format into a third format to be stored in a third storage device associated with the target server.

Abstract: An electrical connector includes an insulative elongated housing with an elongate central slot for receiving a daughter card, a plurality of contacts disposed in the housing by two sides of the central slot, and a mounting section located at one end of the housing with a unitary ejector pivotally mounted therein. The ejector forms a receiving slot for receiving the daughter board, and a pair of engagement arms located by two opposite sides of the receiving slot with corresponding hook at front ends to be engaged within corresponding engagement slots formed in the mounting section. Each deflectable engagement arms includes a metal piece associated therewith not only preventing breaking of the deflectable engagement arm during rotation of the ejector but also enhancing engagement between the ejector and the housing.

Abstract: A card edge connector includes an elongated housing comprising opposite long walls and defining a card slot between the long walls, two rows of contacts retained in the long walls respectively and a ground member including two long plates retained in the long walls respectively. Each row of contacts includes ground contacts and signal contacts, the ground contacts comprises retaining sections retained in the housing, elastic sections extending upward from the retained sections with mating portions exposed to the card slot and leg sections extending downward from the retaining sections. Each of the ground contacts further comprises an engaging portion curved from the elastic section and touching corresponding long plate.

Abstract: A safety drilling system for preventing collapse of water-sensitive formation in the upper part of a high-pressure saltwater layer, which includes a wellhead equipment, a downhole drilling tool, a first injection pipeline, a second injection pipeline, a first return pipeline and a second return pipeline. Upon encountering a high-pressure saltwater layer while drilling, the system injects heavy mud into the annulus of a wellhead through the first injection pipeline to form a heavy mud cap, such that a fluid column pressure in the annulus balances the pressure of the high-pressure saltwater layer. In this case, a fluid column pressure in a drill string is lower than the pressure of the high-pressure saltwater layer.

Abstract: A card edge connector includes a longitudinal insulating housing including two long walls and a bottom wall connecting with the long wall and defining a card slot in a longitudinal direction among the long walls and the bottom wall, two rows of contact arranged in the long walls respectively. Each contact includes a retaining portion, a spring portion extending from the retaining portion and leg portion extending from the retaining portion and out of the insulating housing. The spring portions define contacting portions projecting into the card slot. Each contact is formed by directly punching out from a metal plate, the retaining portions define an outer edge and inner edge interfered with the insulating housing and two opposite plane faces connecting with the outer and inner edge and disposed perpendicular to the longitudinal direction.

Abstract: A card edge connector includes a longitudinal insulative housing, two rows of terminals and an insulative block fixed therein. The insulative housing includes two side walls and a card slot between the side walls and opening upward, the side walls defines grooves for receiving terminals and opening downward. Each terminal includes a retaining portion fixed in the groove, each row of the terminals including a plurality of signal terminals and a plurality of grounding terminals. Each signal groove loaded with the signal terminal is filled with the insulative block, the block fitly abuts against the retaining portion of the signal terminal.

Abstract: The invention introduces a downhole failure analysis and processing method and device based on the partical diameter distribution of drilling cuttings. The device includes body frame, screening component, feeding system, weighing mechanism, driving mechanism and control system, which can realize automatic grading and screening according to the partical diameter of cuttings and weigh the cuttings at all levels; the method adopts the debris sieving device to measure the particle diameter distribution of cuttings, establishes a standard partical diameter distribution database of cuttings, compares with the real-time partical diameter distribution of cuttings to detect the downhole failure, and then selects the corresponding failure solution from the downhole failure data to remove the downhole failure.

Abstract: A safety drilling system for preventing collapse of water-sensitive formation in the upper part of a high-pressure saltwater layer includes a wellhead equipment, a downhole drilling tool, a first injection pipeline, a second injection pipeline, a first return pipeline and a second return pipeline, and further includes a drilling method, wherein after encountering a high-pressure saltwater layer while drilling, heavy mud is injected into the annulus of a wellhead through the first injection pipeline to form a heavy mud cap, such that a fluid column pressure in the annulus balances the pressure of the high-pressure saltwater layer; in this case, a fluid column pressure in a drill string is lower than the pressure of the high-pressure saltwater layer.

Abstract: An electrical connector includes an insulative elongated housing with an elongate central slot for receiving a daughter card, a plurality of contacts disposed in the housing by two sides of the central slot, and a mounting section located at one end of the housing with a unitary ejector pivotally mounted therein. The ejector forms a receiving slot for receiving the daughter board, and a pair of engagement arms located by two opposite sides of the receiving slot with corresponding hook at front ends to be engaged within corresponding engagement slots formed in the mounting section. Each deflectable engagement arms includes a metal piece associated therewith not only preventing breaking of the deflectable engagement arm during rotation of the ejector but also enhancing engagement between the ejector and the housing.

Abstract: The present invention discloses an ultrasonic wellbore anti-collision monitoring system, comprising a downhole ultrasonic monitoring device and a ground control system, wherein the ultrasonic monitoring device includes a cylindrical body, at least three centralizers are fixed on the cylindrical body at an equal interval, the mounting groove 1 is cut into the cylindrical body surface between two adjacent centralizers, one electrically controlled expansion device is installed in the groove 1 and includes electric push rods placed horizontally and a ribbed plate perpendicular to the electric push rods, the bottom ends of the electric push rods are fixedly connected to the bottom surface of the mounting groove, the front ends of the electric push rods are connected with the ribbed plate, the mounting groove 2 is cut into the ribbed plate, and one ultrasonic transducer is installed in the groove 2.

Abstract: The present invention discloses an ultrasonic wellbore anti-collision monitoring system, comprising a downhole ultrasonic monitoring device and a ground control system, wherein the ultrasonic monitoring device includes a cylindrical body, at least three centralizers are fixed on the cylindrical body at an equal interval, the mounting groove 1 is cut into the cylindrical body surface between two adjacent centralizers, one electrically controlled expansion device is installed in the groove 1 and includes electric push rods placed horizontally and a ribbed plate perpendicular to the electric push rods, the bottom ends of the electric push rods are fixedly connected to the bottom surface of the mounting groove, the front ends of the electric push rods are connected with the ribbed plate, the mounting groove 2 is cut into the ribbed plate, and one ultrasonic transducer is installed in the groove 2.

Abstract: A method for establishing a chart for designing mechanical properties of cement stones in a large-scale fracturing oil well is provided, including steps of: establishing a stress distribution model of a cement sheath based on a theory of elasticity and thick-walled cylinder; establishing a cement sheath integrity prediction model based on the cement sheath failure criterion and the stress increment distribution state of the cement sheath; establishing a cement sheath integrity control method based on the cement sheath stress analysis model and the cement sheath integrity prediction model; establishing a functional relationship between cement stone mechanical parameters and strength parameters based on the cement sheath integrity control method; and establishing a cement stone performance index control chart based on the functional relationship between the cement stone mechanical parameters and strength parameters.

Abstract: The invention introduces a downhole failure analysis and processing method and device based on the partical diameter distribution of drilling cuttings. The device includes body frame, screening component, feeding system, weighing mechanism, driving mechanism and control system, which can realize automatic grading and screening according to the partical diameter of cuttings and weigh the cuttings at all levels; the method adopts the debris sieving device to measure the particle diameter distribution of cuttings, establishes a standard partical diameter distribution database of cuttings, compares with the real-time partical diameter distribution of cuttings to detect the downhole failure, and then selects the corresponding failure solution from the downhole failure data to remove the downhole failure.

Abstract: An intelligent throttled well-killing method and device for overflow in high-temperature and high-pressure deep drilling is provided. In view of the problems of complex downhole conditions, low control precision of bottomhole pressure, low one-time success rate of well-killing and the like during the high-temperature and high-pressure deep well-killing operation. A well-killing operation wellbore flowing model is established according to measured data during throttled well-killing. The fluid distribution and flowing states in an wellbore annulus are analyzed in real time, and during a measured standpipe pressure deviation design, a pressure control value is calculated accurately in consideration of the effects of a pressure wave propagation speed and a back pressure application delay, and a throttle valve is automatically adjusted and automatically controlled to actuate.

Abstract: A card edge connector includes a longitudinal insulating housing including two long walls and a bottom wall connecting with the long wall and defining a card slot in a longitudinal direction among the long walls and the bottom wall, two rows of contact arranged in the long walls respectively. Each contact includes a retaining portion, a spring portion extending from the retaining portion and leg portion extending from the retaining portion and out of the insulating housing. The spring portions define contacting portions projecting into the card slot. Each contact is formed by directly punching out from a metal plate, the retaining portions define an outer edge and inner edge interfered with the insulating housing and two opposite plane faces connecting with the outer and inner edge and disposed perpendicular to the longitudinal direction.