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Method for tracking a treatment fluid in a subterranean formation

a technology of treatment fluid and subterranean formation, which is applied in the field of tracking a treatment fluid in a subterranean formation, can solve the problems that radioactive or chemical substances are sometimes not desirable, and achieve the effect of strong stabilization

Inactive Publication Date: 2013-12-26
SCHLUMBERGER TECH CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a method for creating small bubbles in water-based solutions used in the oil industry. These bubbles, known as nano-bubbles, can be stabilized by adding mineral ions to the solution. The process creates electrically conductive water with a minimum electrical conductivity of 300 μS / cm. Unlike other bubbles, nano-bubbles are very small and do not experience buoyant forces, which can lead to rupture near the surface of the fluid. This technology can be useful in improving the efficiency of oil drilling and production.

Problems solved by technology

The use of radioactive or chemical substances as tracers sometimes is not desirable and is even prohibited by environmental regulations.

Method used

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  • Method for tracking a treatment fluid in a subterranean formation

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Embodiment Construction

[0026]A treatment fluid comprising a plurality of tracer agents, wherein each tracer agent is an object of submicron scale, is injected into the wellbore and the formation. Typical diameter / length dimension of a tracer agent is within the range between 1-1000 nm.

[0027]The injection or flow of objects of submicron scale (so called nano-tracers) that are contained within the treatment fluid serve as markers / tracers because their property of staying in bulk of the transport fluid without gravity segregation and no change in type of distribution function of the markers within time of the duration of the formation treatment and measurement operation. Further the nano-tracers have the main advantage that because of their size will occupy the whole volume that the fluid has created in the formation, including pore space or ultra small fissures where the fluid leaked off. This is in particular important in matrix acidizing where fluid is injected into pore space or in shale gas fracturing w...

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Abstract

A method of tracking a treatment fluid in a subterranean formation penetrated by a wellbore provides for injecting the treatment fluid with the plurality of tracer agents into the well and the formation. Each tracer agent is an object of submicron scale. The location and distribution of the treatment fluid is determined by detecting changes in the physical properties of the formation caused by the arrival of the treatment fluid comprising a plurality of tracer agents.

Description

FIELD OF THE INVENTION[0001]This invention relates generally to the recovery of hydrocarbons from a subterranean formation penetrated by a well bore and more particularly to non-radioactive tracers and methods of utilizing the non-radioactive tracers for tracking treatment and reservoir fluids in the formation in order to evaluate and understand the operations executed in the wellbore and / or in the reservoir, near wellbore and wellbore processes and fluid placements such as gravelling packing, hydraulic fracturing, sand control and cementing and drilling fluids flow and placement.BACKGROUND OF INVENTION[0002]The use of various kinds of markers / tracers in the oil and gas industry is well known. Radioactive and / or chemical tracers which can be readily identified are used for monitoring of treatment fluids injection into the reservoir as a means to monitor hydraulic fracturing, acidizing, water control and other wellbore and reservoir treatments.[0003]Thus, U.S. Pat. No. 5,243,190 prov...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B47/10
CPCE21B47/10E21B43/166E21B43/25E21B47/11E21B43/26E21B28/00E21B43/24
Inventor BELANI, ASHOKPISSARENKO, DIMITRI VLADILENOVICHBUTULA, KRESO KURTSAFONOV, SERGEY SERGEEVICHDINARIEV, OLEG YURIEVICHZOZULYA, OLEG MIKHAILOVICH
Owner SCHLUMBERGER TECH CORP
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