9 Uses of Ven-Fyber as a Multi Use Mud-Additive

9 Uses for Ven-Fyber 201™ A Multi-Purpose Mud Additive

1) Tool for Placement of Liquid Lubricant

Presentation Title 2

In the presence of oil and water VEN-‐FYBER 201 preferen=ally oil wets. Where oil based liquid lubricants are used in water base fluids, they are aFracted to the oil weFable VEN-‐FYBER 201 surface. The VEN-‐FYBER 201/oil lubricant is filtered into the wall cake. This ac=on tends to concentrate the lubricant in the wall cake where it is most effec=ve.

2) Matting and Sealing Agent – Conventional LCM Pills


Tradi=onal loss circula=on materials such as mica and nut hulls are generally good bridging agents; however, the resul=ng bridge is oQen permeable. Consequently, a slow constant seepage of whole mud may con=nue. The micronized size of VEN-‐FYBER 201 is too small to be considered an effec=ve LCM (except in high concentra=on). But it has proven to be a highly effec=ve component of conven=onal LCM pills. VEN-‐FYBER 201 provides the maYng and sealing proper=es to prevent whole mud losses (in conven=onal LCM pills).

3) High Liquid Loss – High Solids LCM Slurry


A rela=vely old technique for overcoming lost circula=on problems in fractured, vugular or cavernous forma=ons is the use of high water loss-‐ high solids LCM slurries. VEN-‐FYBER 201, when used in no-‐solids liquids (oil, water or brines) will act as a filter aid and deposit high concentra=ons of solids very rapidly. Data that illustrates this technique is shown in the Tables on the next two slides. VEN-‐FYBER 201 acts as a sealant in most medium to high solids fluids. HLL-‐HS slurries should not be prepared in a drilling fluid base because it will seal. This type of slurry should only be prepared in 100% water or oil in order to use this technique.

Ven-Fyber 201 in High Oil Loss/High Solids Slurries


Ven-‐Fyber 201™ (lb) 50 50 50

Compe5tor, (lb) 50 50 50

Fresh Water (bbl) 1 1

Saturate NaCl Water (bbl) 1 1

Saturated CaCl2 (bbl) 1 1

Blend (W.B.) min 5 5 5 5 5 5

Time to Deposit, second 15 21.4 40 30 58.5 73.5

Height of Filter Cake, cm 2.1 3 2.9 2.5 2.2 2.7

Ven-Fyber 201 as High Oil Loss/High Solids (HOL-HS) Plug


Ven-‐Fyber 201™ (lb) 50

Compe5tor, (lb) 50

Oil (bbl) 1 1

Blend (W.B.) min 5 5

Time to Deposit, second 43 43

Height of Filter Cake, cm 2.5 (*)

(*) Creates a “slushy” non rigid filter cake unsuitable for measurement or use.

4) Sweep for Hole Cleaning


VEN-‐FYBER 201 is a small fibrous product. High concentra=ons of 10-‐ 50 lb/bbl can be used in sweeps for hole cleaning purposes. VEN-‐ FYBER 201 is readily dispersible without specialized equipment. At high concentra=ons and because of its fibrous maYng nature, VEN-‐ FYBER 201 can provided “hindered seFling” during cuYngs removal opera=ons. Although VEN-‐FYBER does not provide suspension under sta=c condi=ons, where seFling does occur under sta=c condi=ons, it will tend to make the deposit fluffy, less dense and easier to remove or suspend.

5) Components for Spacers or Wiper Pills


Spacers or wiper pills are used to clean and separate various types of fluids. Use of highly concentrated slugs of VEN-‐FYBER 201 in such pills will prevent some loss of these fluids during circula=on. In addi=on, VEN-‐FYBER 201 will tend to keep the debris in suspension during dynamic condi=ons and will assist in producing a soQ seFlement suitable for easy removal under sta=c condi=ons.

6) Oil Absorbent


VEN-‐FYBER 201 readily oil wets. For safety and environmental purposes, it can be used for oil spills on rig floors and around mud pits as an oil-‐absorbent floor sweep.

7) Oil Removal Agent for Water Base Fluids


Oil base spoYng fluids are frequently used in water base mud systems. Environmental regula=ons prevent the discharge of these fluids if concentra=ons are above specified levels. Some recent work indicates that VEN-‐FYBER 201 can be added to such systems, mixed well and screened out. The VEN-‐FYBER 201 absorbs the oil and the materials are removed on screening. This allows the oil to be concentrated and removed. The resul=ng oil-‐containing fiber can then be disposed of separately at less cost. This technique is s=ll being developed.

7) Oil Removal Agent for Water Base Fluids


VEN-‐FYBER 201 has also been used in air flota=on cells where ppm oil removal is required for water discharge. In these systems, the VEN-‐ FYBER is added as a water slurry at or near the air injec=on point of the cell. The preferen=al oil weYng characteris=cs of the fiber causes it to absorb the trace amounts of oil. The oil/fiber is carried to the top of the flota=on cell by the air bubbles. A skimmer removes the solids. The oil/ fiber is then collected and treated as a concentrated waste. The water can then be discharged.

8) Sealing Component of Spotting Fluids


VEN-‐FYBER 201 can be used as a component in spoYng fluids used to free stuck drill pipe. When mixed with aqueous or non-‐aqueous spoYng fluids, VEN-‐FYBER 201 will assist in crea=ng a quick seal once the filter cake is destroyed and the pipe is unstuck. This will assist in preven=ng the re-‐s=cking of the pipe.

9) Cement Spearhead Additive


VEN-‐FYBER 201 can be used at high concentra=ons in a light cement slurry ahead of a regular cement job in order to provide some sealing.

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9 Uses of Ven-Fyber as a Multi Use Mud-Additive