Wednesday, 22 May 2019

Performance Study of Nano Additive for Lubrication & Friction Reducing of Drilling Operation & Pilot Scale Productionin Proposed Wells Condation

Title

Mechanical friction during drilling operations is a problem in long narrow, highly inclined boreholes. Some of the cures include application of oil or pseudo oil based mud and lubricants. Use of oil and pseudo oil based muds is highly restricted because of environmental concerns. Even adding small amounts of oil-based lubricants to water based muds raise questions. Consequently, the value of finding an improved environmentally friendly friction reducer applicable in water based mud is high. In this study, we have tried to design water-based drilling fluids with the high lubricant characteristics by using the nano lubricant additives.

Description

  • · Drilling Industry, Synthesis of additives

  • · Enhanced oil recovery from reservoirs

  • · Control of formation damage

  • · Reducing drilling costs

  • · Development and applications of Nanostructures in upstream oil industry

Application

  1. Access to technology of preparation of desired nano additives used in drilling fluids considering the conditions of field

  2. Designing of water based nanofluids with high tribological performance

  3. Access to drilling fluid containing optimized and nano-sized additives considering the conditions of field

  4. Access to methods for preparation of desired nanoparticles

  5. Avoiding costs from friction and erosion of drilling equipments

  6. Methods for synthesis of other nano additives required in drilling fluids.

Achievements

 

Performance Study of Nano Additives forReducing Formation / Drilling Fluid Interactions and Clay Swilling &Pilot Scale Production of Nano Additives

Title

Drilling fluid/formation interaction (water adsorption, osmotic swelling and cation exchange) in hydrocarbon reservoirs caused major problems, such as well bore instability, bit balling, sticking drill strings, waste of time and over costs during drilling. In this project, performance of nano additive for reducing fluid/formation interaction, clay swilling in drilling operation will be investigated; also pilot scale of nano additive in wells condition will be produced.

Description

  • · Drilling industry, EOR, Nano Additives Manufacturing

  • · Formation Damage Reducing, Prevent Pipe Sticking and Wellbore Instability

  • · Nano Additive Development in Drilling Fluid

Application

  1. Nano additive investigation and economic survey

  2. Nano additives pilot manufacturing and performance study

  3. Nano additives performance for wellbore stability and prevention of water invasion in sensitive shale layer

  4. Technical knowledge development of novel environmental friendly nano drilling fluid for decreasing formation damage and increasing lubricity.

  5. Proposed nano additives manufacturing technical knowledge achievement

  6. Decreasing waste of time and over costs during drilling

  7. Infrastructure feasibility of related nano additives manufacturing for drilling fluids

Achievements

 

Design, construction and use of Colloidal Gas Aphron Based Drilling Fluids

Title

Due to their higher pore pressures, formations above and below these producing zones need to be stabilized by fluids with higher density. However, an exposure of a depleted zone to the required high-density fluid can cause a significant loss of the whole fluid and differential sticking. Furthermore, uncontrollable drilling fluid losses are at times unavoidable in the large fractures of these formations. So it is difficult to drill such zones economically and safely by means of conventional rig equipments. Underbalanced drilling may be an alternative, but the extra time and equipments can greatly increase the cost of the operation. Recently, a new drilling fluid technology has been developed in an attempt to eliminate just these discussed problems. This novel technology is based on aphrons uniquely structured micro-bubbles of air. The air used to generate aphrons is usually incorporated into the fluid with conventional fluid-mixing equipment at ambient pressure, thereby reducing costs and safety concerns associated with conventional air and foam drilling operations. In this project, it is presented the design and properties of aphron drilling fluids, and discuss how the fluid characteristics work together to provide superior performance in drilling operations that have a high risk of lost circulation.

Description

  • · Drilling low-pressure/low-fracture-gradient sections

  • · Drilling fractured and highly permeable sections

  • · Reservoir drill-in applications

  • · Drilling normal and low-pressure sections (high density applications)

Application

  1. Designing of aphron-based drilling fluid formulations containing surfactants, polymers and nano-additives

  2. Reducing mud loss circulation into formation in low-pressure reservoirs

  3. Improving of the aphron-based drilling fluid stability by using the nano-additives

  4. Reduce the possibility of damage to the formation and simultaneous removal of H2S in the well using this type of fluid

Achievements

 

Potential reduction of precipitation due to acidizing operation of Iranian hydrocarbon reservoirs

Title

Acidizing is the oldest method of oil and gas wells stimulation that’s widely used in modern processes. Using and designing of surfactant and polymer provide possibility of formation damage reduction while acidizing operation. By the passage of time heavy organic compound in the iranian’s crude oil precipitation increasing, especially during well stimulation operation by acidizing. The organic material contains asphaltenes, paraffins and naphthenes acids. Study on the oil colloidal asphaltenes in the condition of well acid stimulation, stability and potential reduction of precipitation by using surfactants, was the challenge of this project.

Description

  • · Investigation on compatibility of acidizing’s additives with each other and increasing their performance in the well condition

  • · Knowing the mechanism of acid diffusion and effect of increasing viscosity on the rate of diffusion

  • · Investigation on effect of  mutual solvent in the new acidizing system and compeletion fluid.

  • · Knowing mechanism of acidizing organic precipitation and performance of iron ion controller using in novel acidizing method

Application

  1. Access to the technical knowledge of producing native additive and formation damage reduction and increasing rate of production

  2. Achieve necessary parameters for upscaling production of additive including: acid emulsion retarder, anti asphaltenes sludge, anti emulsion, surface tension reducer and corrosion inhibitor

  3. Quantitative investigation and rate of acid diffusion in the carbonate reservoir,  quantitative investigation of additive compatibility

Achievements

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