Use of Calcium Carbonate

as a Drilling Fluid Additive

 

 

Who is Carmeuse?

 

• Largest lime (CaO) producer in North America

 

•  Top 10 largest limestone (CaCO3) producer in U.S.

 

• Eight pulverized/screen-grade limestone production sites in N.A.

 

• Oilfield Products Laboratory in Pittsburgh PA

 

 

Calcium Carbonate  FAB Statement

 

•  Features

    .Limestone, marble

    .Milled or screened

    .Specific gravity (Rel. Density)

    .Particle size distribution…particle packing

    .Acid soluble

    .Readily available

 

 

•  Advantages

    .Densifies drilling fluid

    .Controls circulation loss

    .Prevents formation damage

 

 

•  Benefits

    .Safe

    .Cost effective

    .Versatile

 

 

 

 

 

CaCO3…How it’s Used?

 

• Sold to service cos., then formulated (or blended on-site)

 

• Packaged (50 lb - 3000 lb)

 

• Purchased at corporate level

 

• Small portion of drilling fluid cost

 

 

 

Drilling Fluids

 

•  Drilling fluid, aka “mud,” is added to the wellbore to facilitate drilling:

    .Suspend cuttings

    .Control pressure

    .Stabilize exposed rock

    .Provide casing buoyancy

    .Cool & lubricate

 

•  Types:

    .Water

    .Oil

    .Synthetic oil-based

 

•  Cost:

  ~ 10% of the well drilling

 

 

 

Weighing Agent

 

•  Used to increase density of drilling fluid:

    .finely divided solid

    .high specific gravity

 

•  Fluid density required to:

    .Maintain borehole stability

    .Control formation pressures

    .Prevent penetration of formation fluids

    .Facilitate pulling dry pipe

 

•  Calcium Carbonate:

    .Can be removed during well completion, minimizing formation damage

 

 

 

 

 

 

 

 

Drill-in Fluids

 

Reservoir drilling fluid aka “drill-in fluid”…

    .Minimize formation damage when drilling into the “payzone”

    .Calcium Carbonate added to:

        -Form a “bridge” or “filter cake” over formation pores

        -Prevent migration of particles into the reservoir

 

  Then remove with acid or chelant at a later stage

 

 

Optimum Bridging Agent  Blend

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lost Circulation Material (LCM)

 

•  Added to drilling fluid to prevent loss of fluid due to fractures in the formation

 

•  OR as a “pill” treatment to seal fractures where significant losses have already occurred

 

 

•  Forms:

    .Flake (mica)

    .Granular (DE, Calcium Carbonate)

    .Other (Gilsonite®)

    .Chemical (polymer thickening agents)

 

 

•  Calcium Carbonate builds a filter cake at the entrance of the fracture to seal it up

 

Lost Circulation Material (LCM)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Oil Well Cement

 

•  Cementing a well- pumping cement into place in a wellbore

    .Used to prepare for further drilling, production or abandonment

 

•  Lost circulation addressed via Calcium Carbonate

   .Placement of a “pill” to seal the loss zones before cementing OR

    .Bridging/plugging agent into the cement slurry itself

 

 

•  Acid Soluble Cement (Shale Gas)

 

   .Calcium Carbonate …component of cement

 

    .After frac’ing, broken cement pieces plug casing holes

 

    .Pump acid into casing to dissolve the cement (CaCO3) pieces

 

 

 

 

 

 

About

Parsian Mineral Processing Company, with more than two decades of successful experience and having a complete set of knowledge, ability, experience, expertise and benefiting from experts and experienced personnel, while providing all the professional export services, will help you to receive our quality products anywhere in the world. Long-term and successful presence in international markets of the world has provided the company with a variety of services to organizations, institutions, cooperatives, companies, factories, and other applicants.

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contact

6th Floor, No.38, 13th St., Velenjak St., Tehran, Iran

 

Phone : +9821 2778

Fax : +9821 2218 5009

 

Email : info@parsian-mineral.com

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