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AllSeal

Water and gas conformance service

AllSeal service integrates chemistry, geology, operations, economics, and logistics to reduce or eliminate water and gas production for a particular well or field.

Manage water and gas production with flexibility to match your goals and strategies

Water production characteristics and causes vary significantly from well to well, and water strategies vary among operators and locations. To accommodate this variety, the AllSeal water and gas conformance service integrates a wide portfolio of shutoff technologies from relative permeability modifiers (RPMs) and temporary chemical blocks to permanent cements.

We select the right solution based on your field and operational requirements, reservoir characteristics, economic constraints, logistics, and best practices gathered over decades of work around the world. The result is a fit-for-purpose solution matched to your particular well or situation.

The wide portfolio of shutoff technologies enables engineers to match reservoir properties, customer economics, and logistics to ensure successful operations.
The wide portfolio of shutoff technologies enables engineers to match reservoir properties, customer economics, and logistics to ensure successful operations.

Reduce or eliminate the costs of lifting, handling, hauling, and disposing of water. Extend your well's producing lifetime, improve environmental stewardship, and increase hydrocarbon recovery.

AllSeal water and gas conformance service.

Improve oil recovery with engineered gas control 

Gas breakthrough is common in naturally fractured oil reservoirs or through leaks in cement or casing. Increasing gas production reduces crude oil production. Eventually the well becomes uneconomic, leading to shutting in the well despite its potentially recoverable reserves.

AllSeal service provides engineered alternatives to continue or restore production to these wells and recover otherwise lost reserves, which can significantly improve the economics of operating the field.

Conformance Technology System Description Water Control Application Gas Control Application Wellbore and Perforations Treatment Penetration Matrix Treatment Penetration Fracture Networks Treatment Penetration Acid Resistant Chemical Resistance H2S Resistant Chemical Resistance  C02 Resistant Chemical Resistance Injector Max. Application Temperature, degF [degC] Viscosity Range, cP
MARA-SEAL† system Rigid crosslinked polyacrylamide gel √ √   √   √ <100 ppm √ √ 250 [121] 100
OrganoSEAL R rigid organic crosslinked gel system Rigid organic crosslinked polyacrylamide gel √ √   √   √; Yes, after gelation  √ √ 325 [163] 100
H2S-tolerant gel system Rigid organic crosslinked specialty polymer gel √ √   √   √ √ √ √ 250 [121] 20–80
FoamSEAL stable crosslinked foaming gel Crosslinked foamed polyacrylamide gel √ √   √ √ √ <100 ppm √ √ 325 [163] 100
MARCIT† system Flowing crosslinked polyacrylamide gel √ √     √ √ <100 ppm
 √ √ 200 [93] 50–300
OrganoSEAL F flowing organic crosslinked gel system Flowing organic crosslinked polyacrylamide gel  √ √     √ √ Yes, after gelation √ √ 325 [163] 50–300
ZONELOCK permanent zone sealing fluid system Rigid inorganic gel √ √   √   √     √ 180 [82] 1–2
Delayed gelation system (DGS) Rigid delayed gelation inorganic gel √ √   √         √ 200 [93] 1–2
Particulate gel system Physical plugging gel √ √ √
  √ √ √   350 [177] 10
ZONETROL XT zonal water conformance system Relative permeability modifier √     √           250 [121] 10
FracCON water-conformance fracturing fluid Water-conformance fracturing fluid √     Matrix near fracture faces           250 [121] 100–300
OilMAX matrix acidizing diverter Matrix acidizing diverter for high-water-cut wells √     √           250 [121] 10
Annular cement packer (ACP) Annular cement packer  √ √ √     √ √ √ √ 195 [91]  
WaterSEEKER Gel water-reactive polymer system Water-reactive polymer √     √ √ √ Yes, after gelation √   325 [163]  
WATERSEEKER Cement water-reactive cement system Water-reactive cement √       √ √ √ √   325 [163]  
SqueezeCRETE remedial cementing solution Microcement system √ √ √     √ √ √ √ 320 [160] 60

†Service marks of Marathon Oil Corporation

FoamSEAL

Stable crosslinked foaming gel

Effectively seal natural fissures and fractures, and stop the unwanted flow of gas and water.

FracCON

Water-conformance fracturing fluid

Stimulate oil production while limiting water and gas production in high-water-cut wells.

OilMax

Matrix acidizing diverter

Direct treatments away from intervals with high water cut, improving stimulation and minimizing produced water volume.

OilSEEKER

High-water-cut acidizing diverter

Selectively plug sandstone and carbonate zones with high water saturation, improving oil zone stimulation and production.

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Product Sheet AllSeal Water and Gas Conformance Service

AllSeal water and gas conformance service is an engineered approach to stopping unwanted water or gas production.

Product Sheet ZONETROL XT Zonal Water Conformance System

Treat oil/water reservoirs with multiple zones in which water is produced from distinct intervals.

Case Study CoilFLATE and Water-Shutoff Systems Restore 75 m3/d Oil Production in Wells

CT-conveyed inflatable packers and chemical barriers isolate water production zones, enabling oil production in two wells after 10-year shut-in, West Africa.

Case Study AllSeal Service with Particulate Gel Simplifies Water Shutoff for Kuwait Oil Company

Single-additive water-based fluid shuts off high-permeability water zone without detrimental effects on oil production in the Ahmadi field, South Kuwait.

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