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Controllable Chemical Injection For Multiple Zone Completions

a chemical injection and multiple zone technology, applied in the field of oilfield operations, can solve the problems of production tubing, pipelines, valves and related equipment being exposed to substances that corrode, degrade or otherwise reduce their efficiency or service li

Inactive Publication Date: 2011-06-23
BAKER HUGHES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes an apparatus and method for controlling the amount of an additive injected into multiple production zones in a wellbore. The apparatus includes multiple additive injector assemblies with regulating elements that control the amount of additive injected into each production zone. A controller sends signals to activate the regulating elements, which adjust the amount of additive injected based on the needs of each production zone. The technical effect is the dynamic adjustment of additive injection between different production zones, improving the efficiency and effectiveness of wellbore production.

Problems solved by technology

During hydrocarbon recovery operations, production tubing, pipelines, valves and related equipment may be exposed to substances that corrode, degrade or otherwise reduce their efficiency or service life.

Method used

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  • Controllable Chemical Injection For Multiple Zone Completions
  • Controllable Chemical Injection For Multiple Zone Completions
  • Controllable Chemical Injection For Multiple Zone Completions

Examples

Experimental program
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Embodiment Construction

[0017]Referring initially to FIG. 1, there is schematically shown one embodiment of an apparatus for controlling an amount of additive introduced into production fluid or additive injector assembly 100 (hereinafter “assembly 100”)

[0018]The assembly 100 may be utilized to introduce or inject a variety of chemicals or additives into the production zone 190 to control, among other things, corrosion, scale, paraffin, emulsion, hydrates, hydrogen sulfide, asphaltenes, inorganics and other harmful substances. As used herein, the term “additive” generally refers to an engineered fluid that is formulated to perform a desired task. The additive(s) may be mixed with a base fluid such as water or oil to form what will hereafter be referred to as “injection fluid(s).” Injection fluid(s) may include liquids and / or gases. The assembly 100 may be configured to supply precise amounts of an additive or a mixture of additives to prevent, mitigate or otherwise lessen the harm caused by these substance...

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PUM

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Abstract

This disclosure relates to an apparatus and method for controlling the amount of an additive injected into production fluid in a plurality of production zones. The injection devices may be dynamically controlled such that a central or decentralized control system may instruct a plurality of additive injection assemblies to inject additive, wherein different additive and / or different amounts of additive may be injected in the production fluid in the plurality of production zones. The apparatus includes one or more controllers to send operating commands to downhole regulating elements that may control the amount of additive being injected directly or indirectly.

Description

BACKGROUND OF THE DISCLOSURE[0001]1. Field of the Disclosure[0002]This disclosure relates generally to oilfield operations and more particularly to an additive injection system and methods of employing same.[0003]2. Background of the Art[0004]During hydrocarbon recovery operations, production tubing, pipelines, valves and related equipment may be exposed to substances that corrode, degrade or otherwise reduce their efficiency or service life. Thus, it may be advantageous to treat such equipment with corrosion inhibitors, scale inhibitors, paraffin inhibitors, hydrate inhibitors, demulsifiers, and the like, and mixtures thereof. This disclosure provides, in part, enhanced additive injection systems and methods suitable for such uses.SUMMARY OF THE DISCLOSURE[0005]In aspects, this disclosure is related to an apparatus and method for controlling the amount of an additive injected into a plurality of production zones, whereby the amount of additive may be dynamically adjusted between th...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B43/16E21B43/12
CPCE21B41/02E21B37/06E21B2200/02E21B33/138
Inventor FREEMAN, JAMES J.SCHOONOVER, LARRY G.
Owner BAKER HUGHES INC