Description of drilling starch
Starch is a natural polymer derived from various plant sources, such as corn, wheat, and potatoes. Starch is widely used in the oil and gas industry as a drilling fluid additive due to its unique properties.
What is the meaning of HT LT HV LV starch?
HV, HT, LV, and LT starch are different types of modified starches that are commonly used in various industrial applications, including food, pharmaceuticals, and the oil and gas industry.
HV starch, also known as high viscosity starch, is a type of starch that has been modified to have a higher molecular weight and greater viscosity than regular starch. HV starch is often used as a thickener, stabilizer, and binder in food and pharmaceutical applications.
HT starch, also known as high-temperature starch, is a type of starch that has been modified to withstand high temperatures. HT starch is commonly used in industrial applications, such as paper manufacturing, textiles, and the oil and gas industry, where it is used as a thickener, binder, and fluid loss control agent in drilling fluids.
LV starch, also known as low viscosity starch, is a type of starch that has been modified to have a lower viscosity than regular starch. LV starch is often used as a coating agent, binder, and emulsifier in food and pharmaceutical applications.
LT starch, also known as low-temperature starch, is a type of starch that has been modified to withstand low temperatures. LT starch is commonly used in industrial applications, such as paper manufacturing, textiles, and the oil and gas industry, where it is used as a thickener, binder, and fluid loss control agent in drilling fluids.
Overall, the different types of modified starches are used for specific applications based on their unique properties and characteristics. In the oil and gas industry, the use of HV, HT, LV, and LT starches as drilling fluid additives can help improve the performance and efficiency of drilling operations.
Starch in drilling fluid
Starch drilling fluids are used to control the viscosity and fluid loss of the drilling fluid during the drilling process. The addition of starch to the drilling fluid helps to increase its viscosity, which helps to suspend cuttings and prevent them from settling at the bottom of the well. Starch also helps to reduce fluid loss by forming a thin, impermeable filter cake on the walls of the wellbore.
Some of the benefits of using starch drilling fluids include:
- Biodegradability: Starch is a natural, biodegradable material that is safe for the environment.
- Cost-effective: Starch is a relatively inexpensive material compared to other drilling fluid additives, which helps to reduce the overall cost of drilling.
- Non-toxic: Starch is non-toxic and does not pose a risk to human health.
- High temperature stability: Starch can withstand high temperatures, making it suitable for use in deep and high-temperature wells.
Oil and gas
Starch in drilling is a common practice in the oil and gas industry due to its effectiveness and cost-efficiency. However, it is important to note that the performance of starch-based drilling fluids can vary depending on the source of starch and the conditions of the wellbore. As such, it is essential to use high-quality starch-based drilling fluids and to conduct proper testing to ensure optimal performance.
Drilling starch could be a material effectively using in drilling industry in pipe to stop heating due to having lubricating properties. It additionally a filtration reducer preventing fluid loss throughout the method. Many derivatives of starch are suggested as filtration control agents in clay free compositions. Among these it’s natural polymer however most polymer utilized in mud are artificial.
Starch decrease filtration
Drilling Starch is principally used as effective colloids, that decreases the filtration of every kind of water dispersing drilling fluids and increasing the viscosity. The starch action is caused by its swelling capability and increasing of its volume thanks to free water absorption.
Drilling Starch Applications
Drilling starch refers to it purity uses in wide fields like food industries or even in gas and oil drilling wells which all of them are supplying by us and exporting all over the world with the best price and highest quality. The most common starch for drilling and mining is pregelatinized starch which usually comes from corn or potato and also has a lot of other usages. Drilling starch is compatible with some minerals like KCl, NaCl, MgCl2, CaCl2 and also has no effect on PH of the fluid and has proper activity in the salty water which all of these lead to this matter become a useful element in variable industries like paper making, stickers, textiles, cooking and bakery, drilling wells and mines and lots of other fields.
Drilling Starch Usages
The use of drilling starch in well lubricant is well known. It’s additionally well known that typical ones tend to break down at elevated temperatures for extended periods of your time. Specifically, typical ones tends to break down or spend at temperatures of 225 F. or higher. once subject to it temperature for extended than four hours. High temperatures for extended periods of your time are usually encountered in deeper wells through. The breakdown of this product conventional leads to an increase within the consumption of the standard types required in the mud.
Important items in analysis and data sheet of Starch drilling.
Viscosity: Viscosity is an important parameter that determines the ability of the starch to suspend cuttings and maintain wellbore stability. Viscosity testing is typically conducted using a viscometer, such as a Brookfield viscometer, and the results are reported in centipoise (cP).
Particle size: The particle size of the starch can affect its performance as a drilling fluid additive. Particle size analysis is typically conducted using a laser diffraction particle size analyzer, and the results are reported in microns.
Fluid loss: Fluid loss is a critical parameter that determines the ability of the drilling fluid to maintain wellbore stability and prevent formation damage. Fluid loss testing is typically conducted using a filter press, and the results are reported in milliliters.
Solubility: Solubility is an important parameter that determines the ability of the starch to dissolve in water and form a stable solution. Solubility testing is typically conducted using a hot plate and the results are reported as a percentage.
Purity: Purity testing is important to ensure that the starch does not contain any impurities or contaminants that could affect its performance as a drilling fluid additive. Purity testing typically involves analyzing the starch for heavy metals, ash content, and other impurities.
- APPEARANCE White to light tan powder SPECIFIC GRAVITY 1.5 pH (1% Solution) 6 +/- 1 Bulk density 600 – 700 kg/m3 API Filtration properties <10 cc/30min (in 40 gr/l salt water) <10 cc/30min (in saturated salt water) API Viscosity properties (viscometer dial reading in 600r/min) <18 (in 40 gr/l salt water) <20 (in saturated salt water) Solubility in water Soluble
Sample | ||
| 350 | S.S.W, cc |
| 14 | STARCH, gr |
122.8 | 911 | BARITE, gr |
41 | 70.5 | HEMATITE, gr |
| 150 | M.W, pcf |
15% by mud volume | FORMATION WATER | |
After Addition of Formation Water | Before Addition of Formation Water | Rheological Properties | ||||
AHR | BHR | Req | AHR | BHR | Req | |
59 |
| 65±2 | 70 |
| 72±2 | AV |
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| RPM 600 |
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| RPM 300 PV |
52 |
| 58±2 | 57 |
| 65±5 | PV |
14 |
| 15±2 | 17 |
| 18±2 | YP |
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| RPM 200 |
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| RPM100 |
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| RPM 6 |
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| RPM 3 |
4 |
| 4±1 | 6 |
| 5±1 | GEL 10s |
5 |
| 6±1 | 7 |
| 7±1 | GEL 10min |
7 |
| 7±0.5 | 7 |
| 7±0.5 | pH |
1 |
| 1 | 0.3 |
| 1 | API FL,cc |
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