Abstract: An apparatus and method for measuring the properties of underground water are disclosed. The device comprises a measuring apparatus with a measuring sensor for measuring the properties of the underground water, a pair of expandable and contractible packers arranged above and below the measuring apparatus, a transmitting means for sending measurement signals from the measuring apparatus, and a receiving means located at the ground surface for receiving the measurement signals from the transmitting apparatus. The method of the present invention comprises the steps of placing a measurement apparatus with a measuring sensor in a bored hole at a desired depth, arranging a pair of packers so that the measuring sensor is interposed therebetween, pumping water to the ground surface from the space between the two packers, and comparing the properties of the water pumped to the surface with the properties of the water measured with the above-mentioned measuring sensor.

Abstract: A flexible cable for carrying an inspection probe along the inside surface of a tube, such as a nuclear steam generator tube, to inspect the tube for anomalies and damage. The cable includes a core member having the inspection probe connected thereto and a plurality of adjacent interconnecting beads surrounding and disposed along the exterior of the core member. Each pair of adjacent beads defines a ball and socket joint for allowing the cable to flex without seizing or doubling-back on itself as the cable is moved in the tube so that the exact location of a tube anomaly can be precisely determined by measuring the length of the cable inserted into the tube.

Abstract: A method for more accurately measuring small changes in flowrate, and measuring low flowrates, of a well fluid in a pipe, adapted to be disposed in a borehole, includes inserting a choke in a constricted section of the pipe and placing a differential pressure gauge across the constricted section so as to measure the pressure of the fluid in the constricted section. The presence of the centerbody in the constricted section of the pipe decreases the pressure of the fluid in an annulus region around the choke and converts an otherwise small well fluid pressure change in the constricted section into a large pressure change in the annulus region, the large pressure change being easily measurable by the differential pressure gauge.

Abstract: A reciprocable piston and cylinder type flowmeter prover is calibrated by providing a liquid conducting manifold for conducting liquid to one chamber formed by the cylinder and piston while displacing fluid from the other chamber to a measuring tank, and vice versa. The prover includes a controller having sensors which sense the movement of the piston between its first and second positions and a controller interface is provided between the prover controller and a solenoid-operated valve to provide selective control over the operation of the valve while measuring prover piston displacement in both directions. Visual and audio indicators are interconnected in a controller circuit which indicates the condition of the prover during the calibration process and receives signals from the controller interface for operating the valve.

Abstract: An apparatus for determining the fluid velocity and direction of flow in a generating bank tube attached to a drum of a boiler provides fluid to a measurement area located within the drum. In one embodiment, static and dynamic pressures of the fluid within the measurement area are determined by a pitot tube assembly located in the measurement area and sent to a pressure measuring device such as a U-tube manometer or a Bourdon gage for a direct pressure reading, or to a pressure transmitter to produce signals for processing by a calculating device. The calculating devices processes the pressure transmitter signals representative of the pressures, uses the energy equation to calculate the fluid velocity based upon these pressures, and transmits same to a display device for reading by an operator. In another embodiment, a flowmeter is used on the measurement area directly and transmits the fluid velocity to a display device.

Abstract: The invention is a wellhead stuffing box leak detector including a split-ring adapter which is installed between the stuffing box and the stuffing box cover. The leak detector functions to contain liquids which leak out of the well through the stuffing box and diverts the leakage via an overflow tube to a clear fluid reservoir. The fluid reservoir is provided with a float that moves upward when the fluid level in the fluid reservoir rises, thus activating a switch which can be used to trigger an alarm or to turn motors or engines on or off.

Abstract: A method and apparatus for determining the vapor flow only, or the vapor and liquid flows into various formations surrounding a thermal injection well. The apparatus utilizes a downhole tool having bristles on its outer surface for impeding the flow of fluid past the tool and an instrument at the surface for measuring the drag force produced on the tool as it is moved downward and upward through the well. The fluid flows at various depths in the well are calculated from the measured drag forces.

Abstract: The lower end of a wellbore tubing string or a change in diameter of a wellbore component may be sensed by an apparatus connectable to the end of an elongated coilable tubing for insertion into the tubing string and responsive to movement of the apparatus into or out of the end of the tubing string to effect a change in flow of fluid being conducted through the coilable tubing. The apparatus includes opposed arms engageable with the bore of the tubing string and engageable with a piston member to effect closure of ports in the apparatus to change the flow of fluid through the tubing in response to movement of the arms into or out of the end of the tubing string. Alternate embodiments include bypass passages for conducting pressure fluid to a packer or wellbore tool.