Schlumberger Technology Corporation

Anton Vladimirovich Parshin

Sergey Sergeevich Safonov

Yury Anatolievich Popov

Evgeny Nikolaevich Dyshlyuk

Irina Olegovna Bayuk

Yury Anatolyevich Popov

Valery Vasilievich Shako

Vyacheslav Pimenov

Marwan Charara

Vladimir Petrovich Stenin

Oleg Mikhailovich Zozulya

Victor Vasilyevich Kostylev

Rashid Kamilevich Yarullin

Rim Abdullovich Valiullin

Evgeny Popov

Valery Vasil'evich Shako

Prior to the measurements a first volume element is specified in a porous material sample in order to record the distribution of pore volume characteristics and matrix thermal conductivity along a surface of the porous material sample. A second volume element is set for the record of a thermal conductivity distribution along the surface of the sample with the dimensions equal or close to the dimensions of the first volume element for the record of the pore volume characteristics' and matrix thermal conductivity. The porous material sample is subsequently saturated with at least two fluids with known different thermal conductivities. After each saturation a sample thermal conductivity is measured in each volume element of the sample equal to the second volume element and pore volume characteristics and the porous material matrix thermal conductivity are determined for each volume element of the sample corresponding to the first volume element. The pore volume characteristics and the matrix thermal conductivity distribution along the surface of the sample are determined.

Method for determining pore volume characteristics and porous materials' matrix thermal conductivity

A porous sample is alternately saturated with at least two saturating fluids with known different thermal conductivities. As at least one saturating fluid a mixture of at least two fluids is used with known and different thermal conductivities. After each saturation thermal conductivity of the saturated sample is measured, and pore space characteristics and matrix thermal conductivity are determined based on the results of thermal conductivity measurements.

Method for determining pore space parameters and a thermal conductivity of a matrix of porous materials

Surface of a sample of a heterogeneous material and of samples with known thermal conductivity and thermal diffusivity is heated by a heating spot created by a heater and moving along the surfaces of all samples to determine thermal conductivity and thermal diffusivity of the heterogeneous material. Temperatures of heated surface of all samples are registered by three temperature sensors. Return of the heater and the sensors to the initial position is used for scanning with additional measurements of the sample thermal conductivity for a layer of the sample with depth and width different from those of a layer where thermal conductivity is measured during the forward direction.

Method and apparatus for determining thermal conductivity and thermal diffusivity of a heterogeneous material

A method for determining properties of a formation comprises disposing at least one acoustic logging tool in a well and moving the logging tool along the well. An acoustic logging is performed during movement of the acoustic logging tool together with simultaneous thermal treatment of the formation. A temperature of a formation zone being thermally treated is measured as well as attenuation and velocity of the Stoneley waves excited by the acoustic logging tool. Based on the obtained dependencies of measured parameters as functions of the formation zone temperature formation relative phase permeabilities, formation fluid viscosity and viscous flow activation energy are determined.

Method for determining properties of a formation

A thermal disturbance of a rock mass is performed by circulating a fluid through a borehole, a temperature of the circulation fluid differs from a temperature of the rock mass. Before, during and after the thermal disturbance, differential electrical signals proportional to a temperature difference between two points along the borehole are registered by at least one pair of differential temperature transducers disposed along an axis of the borehole Differential electrical signals measured before the thermal disturbance are compared with differential electrical signals measured during the thermal disturbance and differential electrical signals of different temperature transducers positioned along the wellbore borehole are compared with one another. Based on the comparison results of different rock mass areas with different properties are identified.

Method of studying rock mass properties and apparatus for the implementation thereof

A complex tool according to the invention comprises a cylindrical housing, a lever centralizer aligning the tool along the well axis and having at least six levers and a fluid flow temperature sensor and inflow temperature indicator located on the tool axis. A fluid phase composition sensors are located on the centralizer levers and distributed along the well bore circumference. An additional fluid phase composition sensor is located on the tool axis. At least one additional fluid flow temperature sensor and at least one additional inflow temperature indicator disposed on each lever and distributed along the well bore circumference and located on the same line with the phase composition sensors parallel to the tool axis. There is an additional upper lever centralizer in the tail part.

Complex tool for well monitoring

A method for determining properties of a formation is described herein. The method includes disposing a well-logging tool in a borehole. The well-logging tool includes a device for varying temperature of the formation and two acoustic logging probes located symmetrically along the well-logging tool length relative to the device for varying temperature of the formation. During the logging tool movement in the borehole, continuous varying of the formation temperature, continuous acoustic logging, and continuous measurement of formation temperature are performed. Dependencies of the measured velocity and attenuation of the Stoneley waves as functions of the measured temperature of the formation are obtained. Based on the obtained dependencies, properties of the formation are determined.

Method for a formation properties determination

The invention relates to the area of thermophysical studies of media and is intended for the determination of thermal properties of solid media by placing a measuring device on the surface of the medium. A heater, which is made in the form of a flexible membrane capable of taking the shape of the solid body surface under the action of the hold-down pressure and which additionally serves as a temperature sensor, is pressed to the solid body surface by using a hold-down element in such a way as to ensure that the heater shape fits the shape and irregularities of the solid body surface. The heater temperature is registered throughout the heater surface during and after the heating. The thermal conductivity and thermal diffusivity of the solid body are determined by processing the heater temperature measurement data both in the time range from the start of the solid body heating to the start of the thermal convention of the ambient medium and after the termination of the solid body heating process.

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Moscow, Russia

Anton Vladimirovich Parshin