Schlumberger Technology Corporation

Joseph Ayoub

Richard Donald Hutchins

Stuart I Jardine

Terizhandur S Ramakrishnan

Gary L Rytlewski

Syed Afaq Ali

Philip F Sullivan

Lawrence A Behrmann

Simon James

Balkrishna Gadiyar

Iain Michael Cooper

Mehmet Parlar

Benoit Couet

Michael D Parris

Frank F Chang

William John Bailey

Kevin W England

Ian C Walton

Gerald Henry Meeten

Ahmed Hammami

Roger Griffiths

Andrew John Carnegie

Andrey Mirakyan

Raj Banerjee

Bernard Montaron

Jean Desroches

Peter Fitzgerald

Matthew Miller

Scott Jacobs

Paul William Way

Ann M W Hoefer

David J Wilkinson

Jeff Spath

John Peter Crawshaw

Bernadette Craster

Luca Ortenzi

Adinathan Venkitaraman

Stephen D Mason

R K Michael Thambynayagam

Gregory P Grove

Saad Bargach

Philippe Lacour-Gayet

Vincent Dury

Dominique Bourdet

Wenyu Kong

Haiying Huang

A method for completing a wellbore extending through a subterranean formation may include installing a sandface completion assembly in the wellbore; pumping a solids free fluid comprising chemical precursors into an annulus formed between the subterranean formation and the sandface completion assembly; triggering and/or controlling chemical reaction between the chemical precursors to form a plurality of solid particles in the annulus.

Method to gravel pack using a fluid that converts to in-situ proppant

A method of treating a subterranean formation penetrated by a wellbore is accomplished by introducing a fluid into the wellbore containing a combined fluid loss additive and breaker. The combined fluid loss additive and breaker is formed from particles of an organic peroxide provided on a substrate. The particles are sized to facilitate fluid loss control. A treatment operation is carried out wherein a treatment fluid viscosified with a polymer is introduced into the formation through the wellbore.

Method of treating a subterranean formation with combined breaker and fluid loss additive

A method of increasing the recovery of hydrocarbons from a highly fractured reservoir uses the steps of injecting into the reservoir a membrane-forming fluid to form a membrane over the surface of at least part of exposed formation, injecting into the reservoir a fluid to establish a chemical potential gradient across the membrane and letting fluid enter the formation across the membrane to increase the pressure inside the formation and to force additional hydrocarbon from the formation.

Method of improving recovery from hydrocarbon reservoirs

A method is disclosed for modeling a first reservoir while drilling a wellbore into a corresponding second reservoir, the first reservoir having a plurality of stations, comprising: determining a plurality of values of net present value corresponding, respectively, to the plurality of stations of the first reservoir; and drilling the wellbore into the corresponding second reservoir in accordance with the plurality of values of net present value.

Method for determining a set of net present values to influence the drilling of a wellbore and increase production

A method for optimizing fracture treatments includes interpreting a nominal pump schedule corresponding to a nominal value for each fracture control parameter. The method further includes interpreting environmental variables, and interpreting probability distributions for each of the environmental variables that is uncertain. The method further includes defining an objective function such as a net present value of each fracture treatment over a 365 day period following the fracture treatment. The method includes determining an optimal value for each fracture control parameter according to the objective function by determining the fracture control parameter values that yield the best mean net present value given the variability in the environmental variables as described by their probability distributions.

System, method, and apparatus for fracture design optimization

A method of treating a subterranean formation penetrated by a wellbore includes preparing a treatment fluid with shear thinning, non-monotonic rheological properties, injecting the treatment fluid into the subterranean formation, and inducing shear rate softening phase transition in the treatment fluid. The non-monotonic rheology properties can be such that in the relationship between shear stress (&#x3c3;) versus strain rate ({dot over (&#x3b3;)}), where {dot over (&#x3b3;)}&#x3c;{dot over (&#x3b3;)}&#x3c;{dot over (&#x3b3;)}&#x3c;{dot over (&#x3b3;)}, the shear stress values are &#x3c3;&#x3c;&#x3c3;&#x3c3;&#x2266;&#x3c3;, and &#x3c3;&#x3c;&#x3c3;The method can heterogeneously deposit proppant or solid acid in a fracture. A system to fracture a subterranean formation includes the fracturing fluid, a wellbore to inject the fracturing fluid to propagate a fracture in the formation, and a rate controller to inject the fracturing fluid into the subterranean formation at a minimum volumetric rate to provide a shear stress at an inlet to the fracture that exceeds &#x3c3;. The method and system can achieve heterogeneous particle placement with either proppant or solid acid.

Rheology controlled heterogeneous particle placement in hydraulic fracturing

Methods and tools are described to reduce sanding including the steps of fracturing the cement sheath in a localized zone around the casing and having the fractured zone act as sand filter between the formation and openings in the casing, with the openings being best pre-formed but temporarily blocked so as to allow a conventional primary cementing of the casing. The fracturing step can also be used for remedial operation to reopen blocked formation or screens.

Methods and apparatus for completing a well

A hydraulic fracturing method is disclosed that includes designing a fracture treatment including a fluid pumping schedule to fracture a subterranean formation according to a design model that accounts for cumulative filter cake thickness, including polymer concentrated at the fracture surfaces, to provide a propped fracture width effectively greater than the cumulative filter cake thickness, and injecting fluids through a wellbore into the formation essentially according to the fluid pumping schedule of the fracture treatment design. A fracturing method is also disclosed that includes placing a high breaker loading in the filter cake. A composition is disclosed which comprises a fluid viscosified with a polymer and a fluid loss additive comprising a delayed breaker.

Fluid loss additive for enhanced fracture clean-up

A method and apparatus for improving reservoir communication includes, in one arrangement, causing creation of tunnels in surrounding formation of a well interval, and applying treatment fluid to the tunnels. A local transient underbalance condition is created in the well interval after creation of the tunnels in the formation and application of the treatment fluids.

Reservoir communication by creating a local underbalance and using treatment fluid

A method and apparatus for producing gas from a hydrate formation includes the use of at least one wellbore which penetrates the hydrate formation and further extends into an aquifer below the hydrate formation. The aquifer provides relatively warm water which may be produced up and into the hydrate formation thereby causing the release of gas from the hydrate. Suitable flow control and monitoring equipment may be included to control the flow of water produced from the aquifer and gas produced from the hydrate formation.

Method for exploitation of gas hydrates

A method is given of fracturing a subterranean formation including the step of a) pumping at least one device actively transmitting data that provide information on the device position, and further comprising the step of assessing the fracture geometry based on the positions of said at least one device, or b) pumping metallic elements, preferably as proppant agents, and further locating the position of said metallic elements with a tool selected from the group consisting of magnetometers, resistivity tools, electromagnetic devices and ultra-long arrays of electrodes, and further comprising the step of assessing the fracture geometry based on the positions of said metallic elements. The method allows monitoring of the fracture geometry and proppant placement.

Means and method for assessing the geometry of a subterranean fracture during or after a hydraulic fracturing treatment

Self-diverting resin systems for sand consolidation

The invention relates to a well test method for determining the physical characteristics of a system made up of a well and a subsurface formation containing a fluid such as a hydrocarbon. A change in the flow rate of said fluid is produced for a short period (duration t.sub.P of the order of a few minutes) so as to obtain a flow pulse resembling a Dirac pulse; the variations .DELTA.P of the down-hole fluid pressure is measured during said short period and then during the subsequent period of return to the initial state of the well-formation system, and the experimental pressure curve thus obtained is compared with the curves of a double network of type curves representing, as a function of a common parameter, the pressure P.sub.D and its derivative P'.sub.D with respect to time, by matching the branch of the experimental curve corresponding to the short period with a curve P.sub.D and the branch of this curve corresponding to the subsequent period with the curve P'.sub.D of the same parameter.

Hydrocarbon well test method

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Katy, TX, United States of America

Joseph Ayoub