Fluid Loss Reducer 

1) Introduction

This product is a kind of polyacrylamide multi-copolymer, which can effectively prevent drilling fluid and filtrate from invading the formation, thereby causing the expansion and collapse of shale, resulting in instability of the wellbore. This series of polymers has the properties of resistance to different formation temperatures and high salt. In the temperature range of 100-220 °C, it shows good filtration performance in both clean water and salt water.

2) Technical parameters

3) What it replaces

Ordinary mud thickener is not applicable in high temperature and high salt concentration conditions.

4) Advantages

• Resistance to different formation temperatures and high salt.

• Can be used in range of 100-220 °C  

good filtration performance in both clean water and salt water.

Water-based filtration reduction agent

SURS is a high quality pre-gummed starch product that can be used in most water-based drilling fluid systems, including fresh water, sea water and saturated saltwater mud, with temperature resistance up to 120°C. SURS itself is non-viscosifying and acts as a cuttings trap to inhibit the dispersion and expansion of active shale. In order to avoid bacterial degradation caused by fermentation, it is usually necessary to use with fungicides to ensure its lasting effectiveness.

SURS-HT is a special high temperature resistant modified starch derivative that can be used in most water-based drilling fluids, including fresh water, seawater and saturated salt water mud, with temperature resistance of up to 150°C. The common starch SURS is used when the bottom hole temperature is below 120°C, and the SURS-HT resistant starch is used to replace the common starch when the bottom hole temperature is above 120°C. SURS-HT also acts as a coating for drilling cuttings and inhibits the dispersion and expansion of active shale. In order to avoid bacterial degradation resulting in fermentation, SURS-HT is usually used in conjunction with fungicides to ensure its lasting effectiveness.

ANLOS Sodium polyacrylate copolymer is a medium molecular weight white polymer fluid loss reducer product with a temperature resistance of more than 200 ° C and is not susceptible to bacterial attack. It is ideal for high temperature and deep Wells. However, ANLOS is sensitive to calcium and magnesium ions, and its resistance to bivalent ion pollution can only reach 300ppm. ANLOS is commonly used in fresh water, seawater and monovalent salt water systems, and can be used in low solid phase, non-dispersive and dispersive weighting systems.

AAES-190 is a white polymer product specially designed for high temperature and high pressure water base drilling fluid system. Its main function is to effectively reduce high temperature and high pressure water loss under high temperature drilling conditions. It can be applied to any salt water drilling system. The temperature resistance in fresh water, seawater and monovalent salt water system can reach 190℃, and in formate system can reach 200℃. At the same time, AAES-190 also plays a role in auxiliary viscosification and shale inhibition.

MAXTROL is a white polymer designed for use in extreme high-temperature drilling conditions. Its structure features strong chemical structural links and cross-chains to provide ultra-high temperature stability. The primary function of MAXTROL is to reduce water loss at high temperature and pressure under high temperature drilling conditions. The temperature resistance in fresh water, seawater and one-valence and two-valence salt water can reach 240℃. When the general bottomhole temperature is less than 180℃, AAES is recommended. When the temperature exceeds 180℃, MAXTROL is used. The maximum downhole temperature can be applied to 260℃.

CONSIMP-PLUS is a concentrated type of cation exchange phenolic resin, used in ultra-high temperature Wells and salt paste layer, suitable for sodium chloride content of more than 25% saturated salt water system, the highest resistance to calcium ion pollution, up to 28,900ppm calcium ion concentration, equivalent to 8% anhydrous calcium chloride content. CONSIMP-PLUS unique molecular structure and high degree of sulfonation make its product characteristics show extremely high temperature resistance and strong hydrophilicity, CONSIMP-PLUS in saturated brine system temperature resistance of up to 200℃.

Oil-based Fluid Loss Reducer

ORLIOL lignite resin can be used in all water-based drilling fluids. Its main function is to reduce water loss and maintain good rheological properties of the system, with salt tolerance to 70,000ppm and calcium resistance to 3,000ppm. ORLITROL needs to be used in an alkaline environment with a pH greater than 10 to ensure adequate dissolution. ORLITROL does not increase viscosity, but it is highly resistant to high temperature and high pressure filtration. In addition, ORLITROL also plays a role in stabilizing the well wall and reducing wall erosion.

NASF-1H natural bitumen is a fluid loss control agent for high temperature and high pressure oil-based or synthetic drilling fluid systems, with temperature resistance of more than 180℃. It can be squeezed into the formation micro-cracks to form a plug, which plays a role in stabilizing shale and preventing collapse by using the plugging mechanism. NASF-1H has viscosification effect at low temperature due to partial dissolution.

NASF-2H Natural asphalt is a fluid loss control agent for high temperature and high pressure oil base or synthetic base drilling fluid systems, and its temperature resistance exceeds 200℃. It can be squeezed into micro-fractures in the formation to form a plug, which uses the sealing mechanism to stabilize shale and prevent collapse. NASF-2H has a viscosification effect at low temperatures due to partial dissolution.

QUITROL fluid loss control Agent is a high-end polymer product for oil based drilling fluids such as diesel, mineral oil or synthetic base systems with temperature resistance up to 150 ° C. QUITROL comes in white powder form and is compatible with other conventional oil-based mud products.

QUITROL-HT fluid loss reducer is a polymer-based product suitable for use in oil based drilling fluids such as diesel, mineral oil or synthetic bases, with temperature resistance of up to 230 ° C. QUITROL-HT is the core fluid loss reducer in soil-free high performance oil-based drilling fluids. QUITROL-HT is a white powder that is compatible with other conventional oil-based mud products.

NANOPLUG is a multi-functional drilling fluid additive based on a nanotechnology engineering platform for water - or oil-based mud systems. Its main functions include: effectively reducing high temperature fluid loss, improving fluid lubricity, reducing tool friction and torque, strengthening borehole walls, and increasing fracture pressure in sandstone and shale. The highly dispersed characteristics of NANOPLUG greatly improve the suspension capacity of drilling fluid. The average particle size of NANOPLUG is only 200 nanometers. Some of its unique performance characteristics are unmatched by ordinary drilling fluid additives.

Risfl-ht fluid loss reducer is a liquid polymer product, the main cost is Malay rosin polymer and fatty acid ester, specially designed to reduce the fluid loss of oil-based or synthetic based drilling fluids system, especially suitable for soil free phase high-performance oil-based drilling fluids system, temperature resistance up to 200℃. It can also assist in viscosification, and can be used in conjunction with RISFL-HT high performance emulsifier products to improve the emulsification stability of the entire system.