Schlumberger Technology Corporation

Schlumberger Technology Corpoation

Carlos Abad

Yiyan Chen

Lijun Lin

Leiming Li

Belgin Baser

Bruno Drochon

Erik B Nelson

Philip F Sullivan

Richard Donald Hutchins

Michael D Parris

Andrey Mirakyan

Gregory Kubala

Marie Noelle Dessinges

Trevor Lloyd Hughes

Jesse Lee

Paul R Howard

Kevin W England

Alhad Phatak

Alexander Martin Wilson

Hemant K Ladva

Gary John Tustin

Syed Afaq Ali

Dean Michael Willberg

Balkrishna Gadiyar

Mehmet Parlar

Christopher N Fredd

Anthony R H Goodwin

Mohan K R Panga

Alejandro Pena

Marina Nikolaevna Bulova

Dominic Vincent Perroni

Christopher Daeffler

Marieliz Garcia-Lopez De Victoria

Yenny Christanti

Oscar Bustos

Bipin Jain

Hemant K J Ladva

Laura Schafer

Toan Bui

Ramsey Buoy

Dzanis Menshikau

Gary L Rytlewski

Curtis L Boney

John W Still

William Troy Huey

Jorge E Lopez De Cardenas

Mathew M Samuel

Anatoly Vladimirovich Medvedev

Bernhard Lungwitz

Reda Karoum

John Lassek

Ryan Hartman

Stephen Dyer

Timothy Al Andrzejak

Isabelle Couillet

Anthony Goodwin

Moises Enrique Smart

Brent Busby

Anatoly Medvedev

Shiyi Wang

Richard Marcinew

Baudel William Quintero

Javier Sanchez Reyes

Kay Robinson

Alex Ahrenst

Isaac Aviles

Goke Adeogun

Nihat Gurmen

Zakir Azmi

Donald Hodgson, Iii

Laura Shafer

Amy Simpson

Methods for shortening the waiting-on-cement (WOC) time during primary and remedial cementing operations are disclosed. A fluid pill is injected into the wellbore that comprises reactants. The reaction is exothermic and heat is conducted into the cement sheath, thereby accelerating hydration and shortening the time necessary for the slurry to set and harden.

Methods for shortening waiting-on-cement time in a subterranean well

A method for estimating an elemental composition of a multiphase oilfield fluid includes obtaining a sample of a multiphase oilfield fluid; blending the sample with a viscosity modifying agent to transform the sample into a high viscosity paste; introducing the high viscosity paste into a chamber of an XRF apparatus; using the XRF apparatus to make an XRF measurement of the high viscosity paste; and evaluating the XRF measurement to estimate an elemental composition of the obtained multiphase oilfield fluid.

XRF measurements of multiphase oilfield fluids

Methods for shortening the waiting-on-cement (WOC) time during primary and remedial cementing operations are disclosed. A fluid pill is injected into the wellbore that comprises reactants. The reaction is acclerating hydration and shortening the time necessary for the slurry to set and harden.

A storable composition for oilfield application including a slurry of a carrier fluid and a particulate blend made of proppant; the particulate blend comprising at least a first amount of particulates having a first average particle size between about 100 and 5000 &#x3bc;m and at least a second amount of particulates having a second average particle size between about three and twenty times smaller than the first average particle size; such that a packed volume fraction of the particulate blend exceeds 0.74 and the particulate blend volume is sufficient to substantially avoid settling of the particulate in the carrier fluid.

Methods to deliver fluids on a well site with variable solids concentration from solid slurries

Disclosed are compositions and methods for treating subterranean formations, in particular, oilfield stimulation compositions and methods using polymer viscosified fluid crosslinked with metal complexes with amino and/or phosphonic acids to provide an increased crosslinking temperature and a low pH sensitivity. The metal complexes can be used with borate crosslinkers to provide continuous viscosification as the temperature is increased.

Well treatment with complexed metal crosslinkers

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Acidic internal breakers such as sulfuric acid and nitric acid are used. The break may be accelerated, for example with a free radical propagating species, or retarded, for example with an oxygen scavenger.

Acidic internal breaker for viscoelastic surfactant fluids in brine

An apparatus usable with a well includes an explosive pellet that is adapted to be communicated into the well via a fluid and includes an explosive material that is adapted to be detonated downhole in the well. The apparatus further includes an encapsulant to encapsulate the explosive pellet to inhibit unintended detonation of the explosive material. The encapsulant is adapted to be at least partially removed from the explosive pellet in response to the explosive pellet being communicated into the well.

Encapsulated explosive pellet

A method of treating a subterranean formation penetrated by a wellbore by contacting an energized fluid with the subterranean formation; and reducing a partial pressure of the energized fluid by an amount sufficient to form polymeric foam structure within the subterranean formation.

Downhole polymer foam applications

A method of treating a subterranean formation penetrated by a wellbore is carried out by preparing a treatment fluid at a surface location based upon an initial model of fluid properties for the treatment fluid. The treatment fluid is formed from a first fluid stream and at least one additive fluid stream that are combined to form a treatment fluid stream that is introduced into the wellbore in a substantially continuous process. A fluid property of at least one of the streams is monitored while forming the treatment fluid to provide at least one monitored fluid property of the at least one of the streams. The model is updated based upon the at least one monitored fluid property during the substantially continuous process. Optionally, at least one of the first fluid stream and the at least one additive stream is adjusted as necessary based upon the updated model.

Method of treating a subterranean formation and forming treatment fluids using chemo-mathematical models and process control

The invention provides an oilfield suspending friction reducer treatment composition fluid comprising from about 0.001 weight percent to about 0.5 weight percent of a drag reducing surfactant; at least one drag reducing enhancer selected from the group consisting of polymeric drag reduction enhancers, monomeric drag reduction enhancers, and mixtures thereof.

Friction reduction fluids

A system and method for determining the asphaltene content of a downhole oil sample are provided. In one example, the method includes obtaining a hydrocarbon sample from a hydrocarbon formation of a reservoir at a given depth using a downhole tool. A liquid phase of the hydrocarbon sample is isolated within the downhole tool and the liquid phase is subjected to downhole analysis within the downhole tool to create a chromatography sample. The downhole analysis is based at least partially on size exclusion chromatography. A first property of the chromatography sample is measured to obtain a measured value, and a second property of the chromatography sample is estimated based on the measured value and known calibration curves.

Downhole determination of asphaltene content

A method for treating a subterranean formation, including estimating the solubility parameter of a monomer; selecting a solvent based on the parameter; forming a fluid comprising the monomer and solvent; and introducing the fluid to the formation, wherein the formation is about 350&#xb0; F. or warmer. A method for treating a subterranean formation, including forming a fluid comprising the monomer and solvent, wherein the monomer comprises poly(2-hydroxyethyl methacrylate) and/or poly(2-hydroxyethyl acrylate, and wherein the solvent comprises zinc bromide or calcium bromide or both; and introducing the fluid to the formation, wherein the formation is about 350&#xb0; F. or warmer.

Method of well treatment using synthetic polymers

Compositions and methods are given for delayed breaking of viscoelastic surfactant gels inside formation pores, particularly for use in hydraulic fracturing. Breaking inside formation pores is accomplished without mechanical intervention or use of a second fluid. Bromate oxidizing agents are used along with selected breaking activators for the bromate breaking compounds. Useful bromate breaking activators include acid-generating breaking activators, oxidizing sulfur containing breaking activators, and reducing agent breaking activators.

Oxidative internal breaker system with breaking activators for viscoelastic surfactant fluids

A method of well treatment that includes providing a well treatment composition containing a non-functionalized cellulose material and a halide salt composition containing at least zinc halide, calcium halide or a mixture thereof, and placing the well treatment composition within a wellbore or a subterranean formation, and wherein the halide salt composition dissolves at least a portion of the non-functionalized cellulose material.

Methods of using cellulose in various oilfield applications

A wellbore treatment fluid is formed from an aqueous medium, a gas component, a viscosifying agent, and a surfactant. The surfactant is represented by the chemical formula:[R&#x2014;(OCHCH)&#x2014;O&#x2014;YO]Xwherein R is a linear alkyl, branched alkyl, alkyl cycloaliphatic, or alkyl aryl group; O is an oxygen atom; Y is either a sulfur or phosphorus atom; m is 1 or more; n is a integer ranging from 1 to 3; p is a integer ranging from 1 to 4; q is a integer ranging from 0 to 1; and X is a cation. The fluid may be used in treating a subterranean formation penetrating by a wellbore by introducing the fluid into the wellbore. The fluid may be used in fracturing a subterranean formation penetrated by a wellbore by introducing the fluid into the formation at a pressure equal to or greater than the fracture initiation pressure.

Foaming agent for subterranean formations treatment, and methods of use thereof

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Richmond, TX, United States of America

Carlos Abad