Solvent free fluidized polymer suspensions for oilfield servicing fluids

A technology of water-soluble polymers and suspensions, used in drilling compositions, chemical instruments and methods, etc.

Active Publication Date: 2008-12-17
HERCULES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Synthetic polymer can be polyvinyl alcohol

Method used

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  • Solvent free fluidized polymer suspensions for oilfield servicing fluids
  • Solvent free fluidized polymer suspensions for oilfield servicing fluids
  • Solvent free fluidized polymer suspensions for oilfield servicing fluids

Examples

Experimental program
Comparison scheme
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Embodiment

[0022] Typical fluid polymer suspensions and related long-term stability are given in Tables 1 and 2. No polymer sedimentation was observed after 6 weeks of storage at room temperature. In addition, a freeze / thaw stability test (3 cycles) was performed on the fluid polymer suspension. The fluid polymer suspension is still stable and flowable.

[0023] Table 1: Detailed suspension composition

[0024]

[0025] Table 2: Long-term viscosity stability

[0026] Brookfield Viscosity@

Suspension 1

cPs

Suspension 2

cPs

Suspension 3

cPs

Suspension 4

cPs

T 0

1570

1660

2040

805

1-week

1600

1690

2120

-

2-week

1560

1690

2140

-

3-week

1620

1690

2120

-

6-week

1620

1690

2140

-

[0027] The following examples illustrate the typical performance of this type of suspension of the present invention in co...

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Abstract

This invention relates to a composition and use application of aqueous fluidized polymer suspensions of water soluble polysaccharides and / or polyvinyl alcohol (PVA) for use in oil field applications such completion fluids, drilling fluids, fracturing fluids and oil well cement slurries as rheology / viscosity modifier and fluid loss reducer for use where the affect on the marine environment is to be minimized.

Description

[0001] Related application [0002] This application claims the rights and interests of U.S. Provisional Application Serial No. 60 / 748,452 filed on December 8, 2005, the content of which is incorporated herein by reference. Technical field [0003] The present invention relates to solvent-free fluidization of cellulose derivatives and / or polyvinyl alcohol (PVA) as rheology / viscosity modifiers and fluid loss agents in oilfield applications such as completion fluids, drilling fluids and oil well cement slurries Composition and application of polymer suspensions. The slurry composition contains ingredients in the PLONOR (almost no danger to the environment) catalog, and is especially suitable for use in the North Sea area. Background technique [0004] Among various additives, hydroxyethyl cellulose (HEC) is widely used in oil field water-based fluids. Although high-viscosity HEC is usually used in completion fluids due to its rheology and fluid loss reduction properties, low-visco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035C09K8/08C09K8/12C09K8/20C09K8/24
CPCC09K8/035C09K8/08C09K8/10C09K8/12C09K8/206C09K8/24C09K8/5045C09K8/508C09K8/665C09K8/68C09K8/845C09K8/90
Inventor M·麦尔布西
Owner HERCULES INC
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