Schlumberger Technology Corporation

Onesubsea LLC

John Allan Nighswander

Oliver Clinton Mullins

Andrew L Kurkjian

Chengli Dong

Anthony Robert Holmes Goodwin

Ahmed Hammami

Soraya Sofia Betancourt

Andrea Sbordone

Bernard E Theron

Keith James Massie

Kai Hsu

Gary John Tustin

Peter S Hegeman

Bhavani Raghuraman

Go Fujisawa

Toru Terabayashi

Jonathan Webster Brown

Shahnawaz Hossain Molla

Paul B Guieze

John Ratulowski

Gale Hyslip Gustavson

Lennox Reid

Thomas Pfeiffer

Malcolm Atkinson

Moin Muhammad

Stephen C Leviness

Farshid Mostowfi

Hideki Kinjo

Adriaan Gerard Gisolf

Erwan Olliero

Igor Igorevitch Diakonov

Henning Groenzin

Gerald Smith

Shunsuke Fukagawa

Tim Jones

Moinuddin Khan

Syriac George Mathews

Rune Lien

Tara Davies

Raymond G Kennedy

Robert Saunders

Satoko Yoshida

Embodiments present a method for fluid type identification from a downhole fluid analysis that uses machine learning techniques that are trained and derived from a computer model using pressure, temperature and downhole optical characteristics of sampled fluid.

Fluid type identification from downhole fluid analysis using machine learning techniques

The disclosure describes a system to segregate, enrich and capture oil, water and gas samples from a multiphase flow. The system can be used in a subsea location, on the surface or in any other condition where it is connected to a flow of different phases of gas and/or liquid. The samples obtained are representative in composition of the phases flowing at well head conditions in terms of both pressure and temperature. Additionally, a relatively small volume of each phase is used in obtaining the samples. The system connects and disconnects to ports installed at the sampling location nearby the wellhead or the production line. The sampling flow is controlled by means of a pump. The collected samples are separated in mono (or nearly mono)&#x2014;phase samples (oil, water and gas) and stored in individual bottles.

Sampling separation module for subsea or surface application

A system and method for sampling fluid from a production wellsite are provided. The system includes an interface operatively connectable to the port and a separation circuit operatively connectable to the interface for establishing fluid communication therebetween. The separation circuit includes a pumping unit and at least one sample chamber. The pumping unit includes pumping chambers having a cylinder with a piston therein defining a fluid cavity and a buffer cavity. The fluid cavities define a separation chamber for receiving the fluid and allowing separation of the fluid therein into phases. The buffer cavities have a buffer fluid selectively movable therebetween whereby the fluid flows through the separation circuit at a controlled rate. The sample chamber is for collecting at least one sample of the phases of the fluid.

Method and system for sampling multi-phase fluid at a production wellsite

Methods and apparatus that change the mobility of formation fluids using thermal and non-thermal stimulation including, an example apparatus to simultaneously provide thermal and non-thermal stimulation to change a mobility of a fluid in a subsurface formation includes one or more containers to hold one or more reactants. Additionally, the example apparatus includes a reactor to initiate a chemical reaction with at least one of the reactants. Further, the example apparatus includes an injector to inject a product of the chemical reaction into a formation. The product of the chemical reaction includes heat and a gaseous diluent to change a mobility of a fluid in a subsurface formation.

Methods and apparatus to change the mobility of formation fluids using thermal and non-thermal stimulation

A method of tracking production from an NG source that includes the steps of providing one or more micro-scale GTL units, feeding NG from the source to the micro-scale GTL units, operating the micro-scale GTL units and adjusting the number of micro-scale GTL units employed to track or match the production from the source is provided. In some aspects of the invention, the micro-scale GTL unit includes both syngas manufacture and liquid product synthesis. The liquid product synthesis step may produce methanol, mixed higher carbon number alcohols, dimethyl ether, Fischer-Tropsch liquids, and/or any combination of these products.

Tracking feedstock production with micro scale gas-to-liquid units

Methods of assuring that a representative formation and/or fluid sample of a subterranean reservoir is obtained are provided. One method of validating a reservoir fluid sample obtained from a wellbore includes the steps of acquiring a reservoir fluid sample in the wellbore; measuring a property of the fluid sample downhole with a technique to obtain a measured downhole fluid property; replicating the measuring technique used to obtain the measured downhole fluid property to obtain at a remote location from the wellbore with a technique to obtain at least one measured remote location fluid property; validating the fluid sample through comparison of the measured downhole fluid property and the at least one measured remote location fluid property.

Reservoir sample chain-of-custody

A method of assuring the collection of reliable and quality fluid sample includes the steps of acquiring a fluid sample at a point of acquisition, analyzing physical and chemical properties of the fluid sample at the point of acquisition; recording the point of acquisition sample properties in an electronic database archive, analyzing physical and chemical properties of the fluid sample at a location remote from the point of acquisition, recording the remote location sample properties in the archive, validating the fluid sample through comparison of the point of acquisition sample properties and the remote location sample properties and recording the validated sample properties in the archive.

Fluids chain-of-custody

A receptacle () for use in collecting samples down a well bore () is provided, the receptacle comprising a plurality of interconnecting modules (). A main chamber () is capable of holding a sample, and sensors () within the chamber detect physical and chemical characteristics of the sample. Valves () in a chamber wall seal the chamber () after a fluid sample has been collected. A communication means is placed in communication with the chamber () so as to provide an externally accessible port which communicates with the inside of the chamber () and allows detection and analysis of sample characteristics without removing the sample from the sealed chamber (). The chamber () includes a piston () which is adjustable to keep pressure constant in the chamber and a heating element () to keep temperature constant. A method for sampling downhole fluids is also provided.

Receptacle for sampling downhole

A method and apparatus detects dew precipitation and determines dew precipitation onset pressure in a sample of formation fluid located downhole in an oilfield reservoir. In a preferred embodiment, the method includes (a) isolating a sample of formation fluid downhole; (b) illuminating the sample downhole with fluorescence excitation light; (c) measuring at least one characteristic of fluorescence short from the sample; (d) reducing pressure on the sample; (e) repeating steps (b) to (d); (f) detecting dew precipitation when a change is detected in a parameter that is a function of the at least one characteristic of fluorescence emission; and (g) setting dew precipitation onset pressure equal to pressure on the sample when the change in the parameter is detected. The parameter preferably is a function of fluorescence intensity and fluorescence red shift, and the change is an increase in fluorescence intensity and detection of fluorescence red shift. Also, the function includes a ratio of a measured intensity at a first wavelength to a reference intensity, and the reference intensity is a function of a measured intensity at a second wavelength.

Determining dew precipitation and onset pressure in oilfield retrograde condensate

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Houston, TX, United States of America

John Allan Nighswander