Abstract: A pumping system (13) for oil wells (1) comprises a pump (20) immersed at the bottom of the well (4) and a flow-meter (32) associated with the pump (20), the immersed pump (20) being supplied by an electric supply source (26). The flow-meter (32) is an electromagnetic flow-meter, also electrically supplied by the supply source (26) of the pump.

Abstract: A bit selection method will generate and record or display a sequence of drill bits chosen from among a plurality of bit candidates adapted for drilling an Earth formation in response to input data representing Earth formation characteristics of the formation to be drilled by: comparing the input data representing the characteristics of the formation to be drilled with a set of historical data including a plurality of sets of Earth formation characteristics and a corresponding plurality of sequences of drill bits to be used in connection with the sets of Earth formation characteristics, and locating a substantial match between the characteristics of the formation to be drilled associated with the input data and at least one of the plurality of sets of Earth formation characteristics associated with the set of historical data; when the substantial match is found, generating one of the plurality of sequences of drill bits in response thereto; and recording or displaying the one of the plurality of sequences of

Abstract: A variable radial flow rate control valve including a body forming a bore along the longitudinal axis thereof for transporting a fluid through the body, a fixed choke member fixedly positioned about the bore, the fixed choke member forming a fixed aperture, a rotational choke member rotationally positioned about the bore, the rotational choke member forming a rotational aperture radially corresponding to the fixed aperture, wherein a fluid passage is formed radially between the bore and the exterior of the body when the corresponding apertures overlap. The rotational choke member is rotatably, but not axially, moveable in relation to the fixed choke member between variable radial flow rate positions.

Abstract: A frac blender mounted on a transport vehicle and adapted for movement along a vertical, linear path between a raised stowed position and a lowered operating position. The frac blender is moved between positions by a drive system that is slip connected to the frac blender for minimizing binding stress. The frac blender is supported by a support member that is slip connected to the transport vehicle via a support frame for minimizing bending stress.

Abstract: The invention concerns a method for determining the resistivity in a formation crossed by a cased well, in which one carries out at least one resistivity log in the cased well and one uses the results of at least one resistivity log in the non-cased well, carried out in the same well previously, in order to, in at least one zone (10) of the formation in which the resistivity has not changed between the cased and non-cased condition, deduce the value of a geometric factor k conditioning the resistivity and for determining, by means of said geometric factor k and the log in the cased well, the resistivity in at least one zone (11) different to the calibration zone, in which the resistivity has varied between the non-cased condition and the cased condition.

Abstract: A wireline logging assembly includes a cable having primary conductors, secondary conductors, and a central conductor. A first power source excites the primary conductors using a first propagation mode. A first telemetry transceiver excites the primary conductors using a second propagation mode orthogonal to the first mode. A second power source excites the secondary conductors and a second telemetry transceiver excites the central conductor. In one embodiment, the diameter of the primary conductors is greater than a diameter of the secondary conductors. The primary conductor includes four primary conductors symmetrically positioned around the center conductor and the secondary conductors include a secondary conductor positioned in the interstice between each pair of adjacent primary conductors.

Abstract: The invention concerns a method for determining the position, in a formation (1) containing at least one electrolytic liquid, of an interface (6) in relation to a bore hole (2). One stimulates at a first instant the interface (6) with an excitation signal, one detects at a second instant (t2) a response signal converted by electro-osmosis or electrokinetic coupling effect and, if appropriate, the exication signal after reflection at a third instant (t3). With the three instants and the propagation velocity of the signals, one calculates the distance between the interface (6) and the bore hole (2).

Abstract: A method and apparatus for actuating a downhole tool is provided. The apparatus of the present invention includes a remotely energized actuator device that facilitates storage of energy needed to actuate a downhole tool after the device is placed downhole. By energizing the tool downhole, surface exposure to potential safety hazards is reduced.

Abstract: A hybrid telemetry system for passing signals between a surface control unit and a downhole tool is provided. The downhole tool is deployed via a drill string into a wellbore penetrating a subterranean formation. The hybrid telemetry system includes an uphole connector, a downhole connector, and a cable operatively connecting the uphole and downhole connectors. The uphole connector is operatively connectable to a drill string telemetry system for communication therewith. The downhole connector is operatively connectable to the downhole tool for communication therewith.

Abstract: Methods and systems for thermal compensation of pressure measurements by a pressure gauge. Errors in pressure values are reduced by utilizing a predetermined correlation between the error in pressure measurements, due to temperature gradient in a pressure gauge, and the temperature gradient caused by temperature at a surface of the pressure gauge and temperature at an inner portion of the pressure gauge. Thermally corrected pressure values are derived based on the correlation between the pressure errors and the temperature gradients in conditions such as due to fast and large pressure variations in oil wells.

Abstract: A tool generates signals indicative a shear wave slowness of the formation surrounding a borehole. The tool comprises a collar portion adapted for mounting in a drill string, a quadrupole sonic transmitter mounted to the collar portion, and a quadrupole sonic receiver array mounted to the collar spaced apart from the transmitter. A method determines shear wave slowness of the formation. The method includes propagating quadrupole wave energy into the formation and detecting quadrupole dispersive waveform received at a second location. Formation shear wave slowness is calculated using dispersive slowness time coherence processing.

Abstract: A technique is provided for pumping fluids in a subterranean wellbore. A submersible pumping system can be deployed in a wellbore for moving desired fluids within the wellbore. The pumping system energizes the desired fluid movement by reciprocating a working fluid between expandable members.

Abstract: Compositions, apparatus incorporating a composition, and methods of use are described, one composition embodiment consisting essentially of one or more reactive metals in major proportion, and one or more alloying elements in minor proportion, with the provisos that the composition is high-strength, controllably reactive, and degradable under defined conditions. Compositions of the invention may exist in a variety of morphologies, including a reactive metal or degradable alloy processed into an alloy of crystalline, amorphous or mixed structure that may constitute the matrix of other composition, for instance a composite. Methods of using apparatus comprising a composition, particularly in oilfield operations are also described (e.g. flow and displacement control, sensors, actuators). This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: To perform diagnosis of a completion system, at least one parameter of the completion system in a wellbore is monitored using a sensor. A profile is generated based on the monitored parameter, and a real-time diagnosis is performed of an operation of the completion system based on a comparison of the generated profile and an expected profile to identify an anomaly.

Abstract: A method for determining a property of a substance in a downhole measurement region includes the following steps: providing a static magnetic field having a static magnetic field gradient in the measurement region; applying, in the measurement region, a pulse sequence that includes a tipping pulse, a re-focusing pulse, and a pulsed field gradient pulse train; wherein the pulsed field gradient pulse train includes a first portion and a second portion; the first portion comprising a first pulse or set of pulses having a first polarity and a second pulse or set of pulses having a second polarity, the second polarity being opposite to the first polarity, and wherein the first portion occurs before the re-focusing pulse; the second portion comprising a third pulse or set of pulses having the first polarity and a fourth pulse or set of pulses having the second polarity, and wherein the second portion occurs after the re-focusing pulse; and receiving one or more spin echoes from the measurement region.

Abstract: The present invention comprises the use of a fiber in a sensing optical fiber system operated in a region of negative chromatic dispersion to minimize modulation instability thereby enabling the identification and measurement of the information-carrying signals. The present invention may be used in a variety of sensing environments.

Abstract: A system and method is provided for facilitating remote real-time surveillance, management, optimization, and control of pumping systems at a wellsite. A variety of sensors are deployed along pumping systems, such as electric submersible pumping systems, positioned in wellbores. Data from the sensors is output in real-time to a remote location via a network. The system analyzes the data to identify problems and potential problems in the pumping systems and suggest possible causes and corrective measures. The network can be used to provide two-way communication such that control signals may then be sent from the remote location to the pumping systems. Alarms may also be triggered when sensor data or data trends fall outside predetermined ranges.

Abstract: Methods and apparatuses for high-temperature and high-pressure measurement of pH and/or alkalinity of a fluid is described.

Abstract: A method for obtaining high-quality well logging data acquired during a drilling operation includes acquiring well logging data during a pump-off period when a mud pump is turned off; and extracting a subset of data from the acquired well logging data, wherein the subset of data corresponds to a quiet period within the pump-off period, wherein the quiet period is substantially free of interference from turning the mud pump on or off.

Abstract: A system and method is provided for communicating with a device disposed in a wellbore. Signals are communicated between a surface location and the device via a hardwired section of wellbore and a wireless section of wellbore. The signal is sent downhole or uphole over a portion of the distance via a communication line and over another portion of the distance via wireless communication.