LCM GT-N
GT-N is a LCM to be directly added into drilling or completion fluids for fluid loss control. It is produced from specialized flake, granular, and fibrous materials at controlled lengths and a proper size distribution, which makes it considerably more effective to stop a loss than using only single type of LCM.
GT-N is functional in both water-based and invert emulsion drilling fluids with minimal impact on base fluid properties. It can be mixed directly to a mud system or used in conjunction with other LCM materials.
GT-N has three kinds of specifications:
GT-N LCM Fine | GT-N LCM Medium | GT-N LCM Coarse |
GT-N (F) | GT-N (M) | GT-N (C) |
Properties
Appearance | Blend of flake, fibrous and granular particles |
Specific Gravity | 1.3~1.5 |
Bulk Density | 37~50 pcf |
pH(1% solution) | 7~9 |
Solubility in water | Insoluble |
Thermostability | 302°F (150℃) |
Features & Benefits
▲ Optimized materials at a range of particle sizes and certain shapes for more effective fluid loss control
▲ Effective single LCM with no supplemental LCM needed
▲ Simple addition on rig site with no support from any equipment
▲ Chemically inert with no impact on base fluid properties
▲ No special equipment is needed
Applications
Usage Recommendation
Size of void spaces or channels (microns) | Degree of loss | Dosage (lbs LCM/bbl base fluid) |
<1000 | Seepage loss or partial loss | 2~12 |
1000~3000 | Partial loss or severe loss | 30~60 |
3000~5000 | Severe loss or total loss | 40~80 |
LCM GT-S
GT-S is another LCM to be added into drilling or completion fluids for luid loss control. It is produced from specialized flake, granular, and fibrous materials at controlled lengths and a proper size distribution, which makes it pretty more effective to cure a loss than using only single type of LCM. High acid solubility (92%) of this product makes it very suitable for temporarily plugging reservoir sections where a later acid treatments may be required to restore the permeability.
GT-S is functional in both water and invert emulsion drilling fluids systems with minimal effects on fluid properties. It can be mixed directly to a mud system or used in conjunction with other LCM materials.
GT-S has three kinds of specifications:
GT-S Fine | GT-S Medium | GT-S Coarse |
GT-S (F) | GT-S (M) | GT-S (C) |
Properties
Appearance | Blend of flake, fibrous and granular particles |
Specific Gravity | 1.9-2.4 |
Bulk Density | 56-75 pcf |
Solubility in 15% HCL | 92% |
pH (1% solution) | 7-9 |
Solubility in water | Insoluble |
Thermostability | 392 °F (200 °C) |
Features
▲ Optimized materials at a range of particle sizes and different shapes for more effective fluid loss control
▲ Effective single LCM without any supplemental LCM
▲ Simple mixing operations on rig site without support from any equipment
▲ Chemically inert with no impact on base fluid properties
▲ High soluble in strong acid
Applications
Usage Recommendation
Size of void spaces or channels (microns) | Degree of loss | Dosage (LBS LCM/bbl base fluid) |
<1000 | Seep loss or partial | 2-12 |
1000-3000 | Partial loss or severe loss | 30-60 |
3000-5000 | Severe loss or total loss | 40-80 |
Neotor® High Pressure Resistant LCM —— NTS-M
NTS-M is a LCM mixture with unique properties and is dominated with flake shaped particles of high temperature and pressure resistant materials. When lost to formation, the grain shaped particles in this LCM enter fractures deeply to establish bridges and increase the pressure resistance of near-wellbore zones, especially when a high pressure is applied. This also provides opportunities for different shaped particles to fill and compact under pressure and to form a tight layer.
Properties
Physical Status | Hard |
Specific Gravity Chemical Properties | 1.3 - 1.56 Inert for weak acid and alkaline |
Appearance and Odor | Flake particles with no odor |
Thermostability | 500 ℉ (260 °C) |
Pressure Resistance | 2030 psi |
Solubility | Insoluble to OBM, WBM, and brine. Max. acid solubility 21.5% |
Advantages ▲ High success rate to stop a lost circulation for natural fractures, induced fractures, and irregular small caves, especially under HTHP ▲ High pressure resistance ▲ No influence on properties of drilling fluids |
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Applications ▲ Small and medium size fractures ▲ Induced fractures ▲ Cracks and micro fractures |
Neotor® Acid-Soluble LCM —— NTS-S
NTS-S is produced with special technique which has a acid-solubility of above 98%, and therefore it is more beneficial to be used for curing loss in pay zones.
Properties
Type | Size Distribution (Microns) | Fracture Width (Microns) | |
Coarse | NTS-S (C) | 3000~8000 | <8000 |
Medium | NTS-S (M) | 1000~5000 | <5000 |
Fine | NTS-S (F) | <1000 | <1000 |
Physical Status | Flake Shaped | ||
Solubility in acids | Above 98% | ||
Odor | None | ||
pH | 7-9 in water | ||
Specific Gravity | 2.7-2.9 | ||
Water Solubility | Insoluble | ||
Advantages ▲ More than 98% acid-solubility ▲ No impact on the properties of drilling fluids ▲ Water insoluble and compatible with all type of drilling fluids ▲ Ideal for temporarily plugging of payzones with natural & induced fractures ▲ Tight layer with high pressure resistance |
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Applications
▲ Temporary plugging LCM for pay zones due to 98%+ acid-solubility
▲ Fluid losses in fractures and micro fractures formations
Neotor® NT-DS LCM
NT-DS is composed of optimized micro particles of various types to control fluid losses into micro fractures and/or fractures. Bigger particles can establish bridges within fractures; smaller particles will fill the voids to further control the losses. It can be employed to stop seepage losses before drilling into a permeable or micro fractures formation.
Properties
Physical Status | Powder |
Chemical Property | Inert |
Color | Brown |
Odor | None |
Thermostability | 450 ℉ (230 °C) |
Advantages ▲ Thermostability: Up to 450 °F (230 °C) ▲ Chemically Inert: it is compatible with both oil-based and water-based muds ▲ Environment Friendly: no odor/toxic ▲ No effect on downhole tools ▲ Low dosage (1-3% of NT-DS) ▲ No special equipment needed for mixing or addition |  |
Applications
▲ For increasing pressure resistance of formations with either high permeability or closed natural fractures
▲ For plugging off micro fractures and small cracks (<1mm)
▲ For plugging off fractures to inhibit gas invasion
Neotor® NT-T LCM
NT-T LCM has the property of high solid content and high water loss. This unique property makes it ideal for being a plug that can be compressed by a differential pressure (ΔP). It can be used for fractured formation to stop fluid loss.
Properties
Physical Status | Shape and Color | Gray Power |
Specific Gravity | 1.68-1.76 | |
pH of 2% Solution | Slightly | |
Water Solubility | None | |
Odor | 10-11 | |
Water Loss Property | Standard Time for 200ml Water Loss | 43s |
Mud Cake Thickness | 14mm | |
Note | Concentration at 50 ppb and stir for 5 minutes | |
Compatibility | Compatibility with Drilling Fluids | Good |
Contamination to Drilling Fluids | None | |
Field Applications | Through hopper or add in directly | |
Advantages ▲ Ideal for hydrocarbon zone isolation due to Rapid dehydration under differential pressure ▲ Compatible with both OBM and WBM. ▲ Environmental friendly and no contamination to drilling fluids ▲ Thermostability up to 450°F (230°C) Applications ▲ Wells with severe lost circulation ▲ Open hole remedial squeeze for lost circulation ▲ Cased hole squeeze to seal perforations or casing leaks ▲ Used to temperately plug fractures to inhibit gas invasion |
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MudPlug LCM
MudPlug is a water-soluble, temperature-responsive and high molecular polymer product. When added to water-based drilling fluid, it would produce a rubber-like gel in ring structures after 120 to 240 minutes. The strength of gel can be controlled by adding different treatment agents. This product can quickly transform a water-based drilling fluid into a LCM system to stop a lost circulation.
Properties
Characteristics | Granular |
ρ, g/cm3 | 1.05 - 1.60 |
Apparent viscosity, mPa · s | 20 - 150 |
Gelation time, min | 120 - 240 |
Applicable temperature, ℃ | 30 - 100 |
Breakthrough pressure, MPa | ≥ 8 |
Advantages ▲ Solid-free and environmental friendly water-based gel ▲ Easy to be injected into micro-fractures and porous formations ▲ Stable mudplug gel that can't be easily broken under different drilling conditions ▲ Easy to be drilled and circulated out of wellbore |
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Applications
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Phone: +86-28-83973858
Tel: +86-28-83973858
Email: sales@grandoiltech.com