Bentonite pellets used to control lost circulation on surface hole. When losses are substantial on surface hole, Enviroplug is added directly down the hole after pulling out the drill pipe. Fresh water is also added in order for the bentonite to hydrate and swell. The hole is then normally top filled with conventional LCM and allowed to stand for the sealing effects to take place.

An asphaltene product which can be added to both water and oil base mud systems. In inverts Gilsonite is added to provide seepage loss control and reduce the HTHP fluid loss. In water base mud systems, Gilsonite is insoluble and is added for seepage loss control into fractures. By mechanically reducing losses to fractures, this product can also aid in well bore stability.

Solids glass spheres made of high-grade glass. The beads are chemically inert, free of impurities and environmentally friendly as per Directive 50. Glass Beads Medium will pass through a 60 mesh screen; Glass Beads Fine will pass through a 100 mesh screen.

Graphite can be used to help seal microfractures and stabilize troublesome shale formations. Unlike other shale stabilization additives; Graphite is deemed to be environmentally friendly as per Directive 50 and will not affect the fluids disposal.

This is another source of calcium for floc water drilling. Gypsum CaS04.2H20 is not as soluble as Envirofloc but also does not pose the same disposal concerns as per Directive 50.

Hydroxy ethyl cellulose is used to provide viscosity in both fresh water and brines. It is generally used on horizontal wells where an enzyme will be used at the wells completion to break down the filter cake and any polymer fluid in the near well bore region. HEC being a cellulosic linear polymer is easily oxidized by enzymes such as ChemBreak ECA. This polymer is also susceptible to bacterial degradation.

This is a coal like substance very similar to lignite used in drilling fluids as both a thinner and for secondary fluid loss control. Unlike Desco CF and Alcomer 74, Humalite requires the presence of hydroxyl ions from Caustic Soda to be most effective as a thinner.

Calcium hydroxide (Ca(OH)2) is a source of both hydroxyl ions and calcium. Most often used in the treatment of carbon dioxide. The hydroxyl ions convert carbon dioxide to carbonates and the calcium will precipitate out the carbonates as calcium carbonate. CO2 + 2OH- –> CO32- + H20 CO32- + Ca2+ –> CaCO3

Generally used as a flocculating polymer when floc water drilling. After solids are coagulated with the addition of calcium, this high molecular weight anionic polymer attaches itself to the solids and increases their sedimentation rate. Hyperdrill 204RD can also be used for inhibition (shale encapsulation), however; due to it being a larger molecular weight polymer as compared to Hyperdrill 247RD, it is more difficult to properly hydrate (takes longer to hydrate). If this polymer is not properly hydrated prior to its addition into a mud system it can “blind” the shaker screens and cause the drilling fluid to run over the shale shaker. Hyperdrill 204RD is anionic (negatively charged) and similar to Alkapam 1103D, a high molecular weight flocculating polymer.

A PHPA polymer (partially hydrolyzed polyacrylamide) designed to provide shale encapsulation and thereby help prevent the hydration of water sensitive shale. As compared to other PHPA polymers, Hyperdrill 247RD has a lower molecular weight and as a result is able to disperse and hydrate easier in water base drilling fluids. This polymer is not effective for floc water drilling due to it having a lower molecular weight.

A liquid suspension of PHPA (partially hydrolyzed polyacrylamide) in mineral oil. This product is packaged in 20 L pails. Given that the PHPA is already dispersed in the mineral oil, the product will mix more easily into the mud system. Commonly used when the mixing equipment available on the rigs is limited and the product is less likely to blind the shaker screens. There is not as much product in a pail as compared to the PHPA packaged in sacks (approx. 35% active ingredient). This PHPA has a high molecular weight and can be used for flocculating drilled solids while floc water drilling and for shale stabilization (encapsulation).

A high molecular weight cationic PHPA polymer. Sometimes used when “stripping” solids from a drilling fluid (area/fluid specific).

A high molecular weight non-ionic (equal amount of positive and negative charges) PHPA polymer. Sometimes used when “stripping” solids from a drilling fluid (area / fluid specific).

Xanthan Gum biopolymer is used for viscosity. Being a high molecular weight branched polymer, small concentrations will provide exceptional suspension properties. This product can be used in combination with gel or on its own for rheology. Xanthan Gum is a natural polymer and is susceptible to bacteria degradation. On longer duration wells when relying on Xanthan Gum for rheology, it will be necessary to monitor for bacteria and treat with biocide as required.

This is a naturally oxidized coal known as Leornardite, used in drilling fluids as both a thinner and for secondary fluid loss control. Unlike Desco CF and Alcomer 74, lignite requires the presence of hydroxyl ions from Caustic Soda to be most effective as a thinner.

Magma fiber is a spun mineral fiber which is 97.3% soluble in 7.5% HCl, thus making this product ideal for lost circulation when damage to the producing formation may be a concern. Magma Fiber is effective for healing losses when used in conjunction with sized calcium carbonate (also acid soluble).

Mgo is used to buffer the pH of a drilling fluid at 10. At a pH below 10 this product will dissolve and bring the pH back up to 10. The additive must be mixed in excess for the buffering to take place.

This is a derivatized starch which is added to provide fluid loss control. Derivatized starches such as Matrix FL also impart extra lubricity to a drilling fluid. The Microtox threshold for this product is 7 kg/m3, which is greater than some of the other starches; allowing for the product to be more easily land-spread.

An Oil Mud Emulsifier used in formulating the Matrix Invert emulsion drilling fluid system. This emulsifier is a blend of surfactants providing both primary and secondary emulsion stability and oil wetting properties.

Matrix PAC is the same chemically as Staflo and Drispac. Used for fluid loss control, this is a linear polyanionic cellulose polymer. This polymer will be easily broken with enzymes such as Chem-Break ECA. The polymer does not impart suspension properties (gel strengths / low end rheology).

Matrix’s amine used to provide inhibition for water sensitive shale’s / clay minerals through the process of cation exchange. This tiny polymeric molecule has amine groups at each end capable of exchanging with sodium ions on clays. Unlike salts such as potassium chloride, this product can be land-spread at concentrations up to 57 L/m3.

A blend of surfactants designed for use with Matrix Mul in formulating Matrix’s Invert fluid system. Matrix Wet effectively coats all the solids and improves the fluids rheology.