Schlumberger Technology Corporation

Other

Services Petroliers Schlumberger

Schlumberger Holdings Limited

Prad Research and Development Limited

Prad Research Development Limited

Tullio Moscato

Elena Borisova

Julian J Pop

Kentaro Indo

Sepand Ossia

Tudor Ioan Palaghita

Maxim Nikolayevich Yushko

Zeynep Alpman

Alexis Petit

Abdur Rahman Adil

Robert Van Kuijk

Francois M Auzerais

Hubertus V Thomeer

Xiaowei Weng

Xu Wu

Patrice Ligneul

Jacques A Jundt

Douglas Pipchuk

Rex Burgos

Frederic Pauchet

Yucun Lou

Bertrand Theuveny

Dan Angelescu

Philippe M J Tardy

Olivier Peyret

Sebastien Prangere

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool While pumping, a saturation pressure of the formation fluid is measured. The pumping rate is adjusted such that the fluid pressure in the flowline remains above a threshold saturation pressure.

Flowline saturation pressure measurements

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool, measuring a saturation pressure of the formation fluid in the flowline while pumping, and adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

Flowline saturation pressure measurement

A measurement device is configured in a shaped charge package to be utilized in a perforating gun section tool string. The measurement device may include for example thermal conductivity detectors (TCD) configured to measure fluid flow velocity and/or thermal characteristics of the flowing fluid. The measurement device may include for example a pair laterally spaced TCDs each having sensor faces positioned co-planar with a surface across which the fluid flows. The measurement device may include a recessed TCD, having a sensor face recessed below an opening in the exterior surface.

Method and apparatus for determining fluid flow characteristics

A method for sampling a downhole formation fluid includes pumping formation fluid into the flowline of a downhole sampling tool. The method can also include measuring a saturation pressure of the formation fluid in the flowline while pumping. The method can also include adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

A method for sampling a downhole formation fluid that includes pumping formation fluid into the flowline of a downhole sampling tool. The method also includes measuring a saturation pressure of the formation fluid in the flowline while pumping, and adjusting the pumping rate such that the fluid pressure in the flowline remains within a predetermined threshold above the measured saturation pressure.

A method for determining a flow distribution in a formation having a wellbore formed therein comprises the steps of positioning a bottomhole assembly in a wellbore, the assembly including an injection port for dispensing a fluid, a first sensor disposed upwell from the injection port, and a second sensor disposed downwell from the injection port, wherein each of the sensors generates a feedback signal representing a flow rate of the fluid in a portion of the wellbore, determining an approximate depth of a portion of the bottomhole assembly in the wellbore, generating a data model based upon an instruction set, the data model representing flow characteristics of the fluid in the wellbore, wherein the data model is derived from the feedback signal and the approximate depth of the injection port, and analyzing the data model based upon an instruction set to extrapolate a characteristic of the formation.

Methods for interpretation of downhole flow measurement during wellbore treatments

Methods and apparatus of adjusting matrix acidizing procedures are disclosed. An example method includes determining parameters of a wellbore fluid during a matrix acidizing procedure using at least a first sensor and a second sensor. The parameters include velocity of the wellbore fluid and a temperature difference between the first sensor and the second sensor. The method also includes, based on the parameters, determining a characteristic relative to an invasion length of a reactive fluid within the formation, the reactive fluid used in association with the matrix acidizing procedure.

Methods and apparatus of adjusting matrix acidizing procedures

Apparatus and methods for determining downhole fluid parameters are disclosed herein. An example method includes disposing a downhole tool in a well. The downhole tool has a sensor including a heater and a temperature sensor. The example method further includes flowing a fluid in the well. The example method also includes determining a first velocity of the fluid at a first depth via the sensor and, based on the first velocity of the fluid, a first parameter of the well at the first depth is determined.

Methods and apparatus for determining downhole parametes

Example methods and apparatus for analyzing operations are disclosed herein. An example method includes disposing a sensor in a fluid flow passageway. The sensor has a heater and a temperature sensor. The example method further includes obtaining a first response of the sensor to a fluid flowing in the fluid flow passageway and transmitting a signal to a tool to operate the tool. Operation of the tool is to affect a fluid parameter of the fluid. The example method also includes obtaining a second response of the sensor to the fluid flowing in the fluid flow passageway and determining if the tool has operated based on the first response and the second response.

Methods and apparatus for analyzing operations

Example methods and apparatus to determine downhole fluid parameters are disclosed herein. An example method includes determining a velocity of a portion of a downhole tool moving in a well and determining a response of a fluid sensor disposed on the portion of the downhole tool. The fluid sensor includes a resistance temperature detector at least partially immersed in a fluid in the well. The example method further includes determining a velocity of the fluid based the velocity of the portion of the downhole tool and the response of the fluid sensor.

Methods and apparatus for determining downhole fluid parameters

Example methods and apparatus for determining fluid parameters are disclosed herein. An example method includes disposing a sensor in a first fluid flow passageway. The sensor has a heater and a temperature sensor. The example method further includes flowing a first fluid into the first fluid flow passageway via a second fluid flow passageway and determining a first fluid property value of the first fluid via the sensor when the first fluid is in the first fluid flow passageway. Based on the first fluid property value, a state of an operation is determined.

Methods and apparatus for determining fluid parameters

Methods for determining downhole fluid parameters include disposing apparatus including a sensor in a fluid in a wellbore. The sensor includes a heater and a temperature sensor, and the fluid is flowing at a velocity of about zero centimeters per second to about ten centimeters per second. The fluid includes particulates, paraffin or asphaltenes. The methods further include obtaining a first measurement via the heater and obtaining a second measurement via the temperature sensor. Based on the first measurement and the second measurement, the velocity of the fluid is determined.

A micro-structured surface for immersing in a multiphase fluid mixture comprises a substrate having pores and a wetting liquid phase trapped in the pores. The wetting liquid phase is immiscible with all the phases of the multiphase fluid mixture. Alternatively, the wetting liquid phase is miscible with one of the phase of the multiphase fluid mixture.

Micro-structured surface having tailored wetting properties

Systems and methods for determining at least one parameter of a fluid in a well are provided. The system has a downhole system deployable into the well, and sensor elements to measure fluid parameter(s) of the fluid in the well. Each of the sensor elements is provided with a base and sensors. The base is positionable on the coiled tubing system about the injection port. The sensors are positionable in the base. Each of the sensors are thermally isolated from each other, and are capable of operating as both a heater to heat the fluid, and as a temperature sensor for measuring a temperature of the fluid. The sensors are operatively interchangeable such that the sensors may selectively heat and measure the temperature of the fluid whereby fluid parameters of the fluid are determined.

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Paris, France

Tullio Moscato