9 uses of ven-fyber as a multi-use mud additive
TRANSCRIPT
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
Presentation Title 3
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
Presentation Title 4
A rela=vely old technique for overcoming lost circula=on problems in fractured, vugular or cavernous forma=ons is the use of high liquid loss -‐ high solids (HLL-‐HS) 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
Presentation Title 5
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
Presentation Title 6
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
Presentation Title 7
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
Presentation Title 8
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
Presentation Title 9
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
Presentation Title 10
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
Presentation Title 11
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
Presentation Title 12
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
Presentation Title 13
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.