Polymer consumption for stabilization at hb. Bentonite for horizontal directional drilling

In modern urban conditions, the replacement of underground utilities in the traditional way (open laying) is increasingly becoming difficult and even impossible due to dense buildings, the impossibility of blocking highways and other man-made and natural obstacles. Therefore, today trenchless technologies are becoming more and more in demand, among which the horizontal directional drilling (HDD) method occupies a leading position.

Horizontal directional drilling is a unique technology for trenchless construction and repair of gas pipelines, oil pipelines, pressure, gravity, storm sewers, cases for electrical cables, telephone and fiber optic cable communication lines, multiservice networks and cable television lines under rivers, lakes, forests, agricultural facilities, in security zones of high-voltage overhead power lines, main gas, oil, product pipelines, in dense housing developments, under highways, squares, parks, existing railways and roads, airport runways, etc. The essence of the method is the use of special mobile drilling rigs with an appropriate drilling carriage, which carry out preliminary drilling along a pre-calculated trajectory, followed by expansion of the well and dragging pipelines into the formed cavity, with continuous monitoring of the drilling process and appropriate adjustment of the route during its construction.

When using the horizontal directional drilling method, bentonite is used to prepare drilling fluids. These fluids at a flow rate of 50-60 kg per m3 of water form a stable suspension with good viscosity and water-retaining properties, which provide good cuttings removal, high lubricity properties and wellbore stability.

The rapid development of HDD technology demanded bento powder, which provides a lower solution consumption. These products are already a mixture of bentonite with a high polymer content and other additives that improve the properties of the solution and reduce its consumption. Our partners have already mastered mass production of benthic polymer mixtures, the consumption of which is 30 kg per m3 of water ".

Technical characteristics of these brands are presented below.

Technical specifications GNB-1

Value

Moisture content

No more than 11

At least 30

Water yield

No more than 15

At least 60

No more than 2.0

Concentration of bentopowder in solution - 5% Technical characteristics of HDD-2

Quality indicators of benthop powder brand GNB-1

Value

Moisture content

No more than 11

Fann viscometer reading (at 600 rpm)

At least 30

Water yield

No more than 15

Nominal viscosity (Marsh funnel)

At least 45

Wet residue on sieve with mesh No. 0071

No more than 3.0

Concentration of bentopowder in solution - 6% Technical characteristics of GNB-30

Quality indicators of benthop powder brand GNB-1

Value

Moisture content

No more than 11

Fann viscometer reading (at 600 rpm)

At least 30

Water yield

No more than 16

Nominal viscosity (Marsh funnel)

At least 45

Wet residue on sieve with mesh No. 0071

No more than 2.0

Concentration of bentopowder in solution - 3%

HDD technologies

Modern horizontal directional drilling - HDD - is a trenchless way of laying underground utilities. In this case, special drilling technologies and equipment are used.

In construction and during repair work such a method as HDD drilling is spreading quite quickly, as it allows to reduce labor costs, save time and financial resources. Most often, HDD drilling is used in the process of laying gas pipelines, pipelines and sewerage systems, as well as when pulling communication cables. HDD technologies are used where the weather can seriously interfere with the progress of work or where urgent intervention is needed in an “unsuitable” for construction works season.

In some cases, when there are geographical obstacles on the way of laying communications - ravines, parks, rivers, buildings, etc., only horizontal drilling is possible, running parallel to the obstacle, more precisely, directly under it.

High-tech HDD - horizontal directional drilling - allows you to accurately puncture the soil and not harm environment and landscape. Horizontal drilling is safe and environmentally friendly, and the laying of communications and trenchless pipe installation does not disrupt the operation of urban infrastructure and does not take much time.

Bentonite in HDD

Drilling should often be accompanied by the production of bentonite, because it is on the basis of this material that the highest quality drilling fluids are made. Bentonite is an excellent absorbent and ideal for demanding jobs such as horizontal directional drilling.

The Profit company has been successfully providing drilling companies with necessary material, high quality and at the same time inexpensive. Concrete-based mortars produced by our company are offered in an assortment sufficient for a detailed selection at each stage of drilling. It is no secret that it is the quality of the material used in drilling that is of great importance for achieving success in a drilling operation. Properly selected drilling fluid can greatly facilitate this task. And the bentonite powders offered by our company are not only highly effective, but also economical. Call the Profit company, and we will select the best drilling fluid for you.

After piloting, the well is expanded with drilling rigs by a puncture, the term is also known road punctures or HDD installations and tighten the pipeline to ensure the supply of water, gas, for sewerage, communications. Drilling rigs puncture or auger rigs have very powerful torque and pulling force, which is superior to any traditional installation HDD. If performed horizontal directional drilling with piercing installations, the following must be observed:

  • Bentonite must not come out of the inlet and outlet openings of the initial and final pit. It must be ensured that the pipe to be placed floats in the bentonite. This can easily be done with partitions or earth dams.
  • The auger rig must be equipped with a rod crusher and the bentonite must go through the flushing head, just like HDD rigs
  • HDD operator must necessarily be informed about the nature of the soil through which he will expand the hole

After pilot drilling has been completed, a reaming drill head and a pull head must be attached to the pilot rod in the final excavation. So that when pipeline laying the pipe being pulled does not rotate, it is necessary that a support is installed between the traction and drilling head.

Bentonite - lubricant or polymer

  • Bentonite cannot be applied to all possible types of soil. It is necessary to determine what kind of soil is supposed to be drilled.
  • Any soil related to sand, gravel or without groundwater generally allows the use of bentonite.
  • If the mixture of bentonite and water or just water is not completely used up, it is impossible to use a new mixture for flushing holes using the puncture or HDD method.
  • It should be taken into account that the polymer prevents the bentonite from swelling.
  • Before drilling in a well in which bentonite must support the walls of the well, it is necessary to carry out tests in a bucket with rock or drilling material.

The supply of bentonite is calculated using the following formula:

The volume of the retracted pipe multiplied by a factor of 1.2 of the retraction speed, this is especially true for the auger rigs Perforator PBA 85 or Perforator PBA 95, for which this parameter is 0.39 m/min.

Another example: If the diameter of the retractable pipe is 200 mm and the retraction speed is 460 mm/min, then the flow bentonite or bentonite mixture will be 17.3333 l / min. Learn more from the company's specialists ES+.

Approximate consumption values ​​of bentonite

Any values ​​can only be indicative for horizontal drilling, as the structure of the soil is of paramount importance, especially in terms of consumption or use of mixtures based on bentonite.

The required amount of bentonite supply at horizontal drilling

Required volume of bentonite supply, l/min

Pipe retraction speed, cm/min

The maximum diameter of the retracted pipe, cm

Required volume of bentonite supply, in l/min from

Required volume of bentonite supply, in l/min up to

The table of how bentonite is consumed is also approximate and compiled on the basis of statistical data during a large amount of work on trenchless laying, but the variance in data scatter is not very large as for HDD as well as for methods "road puncture"(characteristic name implying auger rigs), so this table can be safely used if there is an unexplored place of passage.

By sending a request, we will provide you with a list of equipment suppliers, any industrial pumps and hydraulic systems for pumping bentonite slurry.

Albrecht's company is the only official distributor of bentonite under its own brand Albrecht-MV and Albrecht-LV. It's bentonite for hb top quality, which is used in all types of HDD drilling. Bentonite in bags of 20kg and 25kg from the factory in Krasnodar, always in stock in Moscow. Anyone who is going to engage in horizontal directional drilling needs bentonite. The use of bentonite during horizontal directional drilling. In addition to the main functions of improving the quality of the puncture, it also ensures the safety of the drilling tool. Bentonite can be used as a filler and for the treatment of wells and boreholes. If you plan to carry out drilling work, you need to buy hb bentonite. In this case, the well solution will help remove the existing fragments, as well as “remove” various rocks. When wondering where to buy bentonite, you also need to think about buying additional drilling fluid components that will improve the quality of the puncture. If you decide to buy bentonite for drilling, pay attention to its quality, because thanks to it you will not only get an excellent puncture, but also save your HDD equipment. With proper use of bentonite, the well will not be clogged with clay or earth, and debris and limestone will not subsequently interfere with its normal use. On our website you can see a photo of bentonite, in the photo bentonite is packed in 20kg and 25kg bags. Our company is engaged in the sale of bentonite both wholesale and retail. We supply bentonite to such cities as Chelyabinsk, Samara, Yekaterinburg, Novosibirsk, Kazan, Krasnodar, Voronezh, Tyumen, Perm, Bryansk, Serpukhov, Ryazan, Kirov, Irkutsk, Ufa, Astrakhan, Penza, Rostov and many others. If you need high quality bentonite, please contact Albrecht.

Bentonite for drilling

Bentonite for drilling is best purchased from the Albrecht company. It is Albrecht's company that is the official representative of the bentonite plant under its own brand - Albrecht MV and Albrecht LV. If we talk about the quality of bentonite, it directly depends on the physical and chemical properties. If we talk about bentonite for drilling, then it can quickly change its properties during the puncture of a horizontal well, thanks to which the efficiency of the process will be better, and the quality of the wellbore itself will noticeably improve. It is important to learn that the hydraulics of the bit will also depend on the quality of the bentonite. Play the role of him Chemical properties, density, solution yield. You can Buy Bentonite in Moscow for drilling wells from us. Choosing bentonite for drilling with us means choosing the highest quality product. Our bentonite will be able to significantly increase the density of the solution, thereby improving its lifting force, and the yield strength and viscosity of this material will help to quickly clean the wellbore, give it maximum stability and strength. If you are interested in the price of betonite, you can always check it on our website or with our managers. It is better to buy high quality bentonite than to regret the short service life of the material and drilling equipment. In order to purchase betonite, it is necessary to take into account its modification and mineral composition. It is extremely important to consider all factors before buying bentonite, and choose the right composition of bentonite, choosing the right bentonite for your object. You can also look at the characteristics of bentonite, as well as find out the cost of bentonite on our website, the price is for a bag of bentonite 20 kg.

Bentonite for hb

Bentonite for gnb in Moscow is best bought from Albrecht's company. Bentonite is delivered directly from the factory in Krasnodar. I would like to note that most often during drilling, bentonite is used for HDD of foreign production. Bentonite is a clay, a clay powder that is high in sodium. The main feature of bentonite for gnb is obtaining high density and excellent swelling. Bentonite can be called a good sealant for laying pipelines. It is necessary to think about how much bentonite costs? where to get bentonite? where is bentonite for gnb sold? You can find and buy bentonite both on order in stores and on the website. We recommend to buy bentonite for gnb wholesale or retail from us. We sell bentonite in bags of 20 kg, the small weight of the bag facilitates its transportation and use in the process of HDD drilling. During the purchase, it is best to inquire about the properties of bentonite from our salespeople, they will advise you, for the most right choice the right bentonite for you. The consumption of bentonite depends on the type of soil, the length of the puncture, the expansion diameter and the quality of the bentonite used. The composition of bentonite is also different, our managers will select you bentonite for HDD, depending on the drilling object, thereby ensuring a successful puncture.

Bentonite for wells

Albrecht's company offers you to buy high quality bentonite for wells from the manufacturer's plant in Krasnodar. When bentonite is used for drilling wells, a clay crust will appear on the well wall, which will have excellent density. It is she who will act as a stabilizer of the existing wellbore. Thanks to such a crust, the destruction of the walls will not occur. Given the characteristics of the bentonite solution, it is possible to create a barrier for formation groundwater. This will help reduce the chance of water or oil blowouts while horizontal directional drilling is in progress. You can buy bentonite for wells at any time by placing an order on our website or by phone. Practice shows that the use of bentonite solution allows several times to speed up the drilling process, and the time for it will be minimal. The main component of the material is clay powder, which is created using a special technology. HDB bentonite is in fact the same material as bentonite for wells. The composition of the bentonite mixture itself will simply differ slightly. But you should not think about where to buy bentonite, if all the work is done by hired workers - they will decide this issue themselves. Highly popular among professionals in this issue Albrecht MV bentonite is also used. It distinguishes not only profitable price but also good quality.

drilling bentonite

When choosing drilling bentonite, our company recommends using high quality Albrecht MV bentonite. During HDD drilling, an important role is played not only by the units used, but also by the drilling fluid. Its quality directly affects the stability and integrity of the well being drilled, as well as the integrity and durability of the drilling tool. Albrecht's company recommends buying drilling bentonite from us. It is our company that is engaged in the official sale of high quality betonite from the Albrecht MV bentonite plant. Our customers who use HDD bentonite purchased from us are confident that during the drilling process, bentonite will not only facilitate puncture, but also save the tool. If you have already used bentonite for HDD drilling, you know the importance of choosing the right drilling fluid for the right well. The bentonite of the drilling company Albrecht also has its own characteristics, considering which you choose the bentonite that is suitable for you. Our company can advise you on the choice of the type of bentonite plant in Krasnodar, thereby choosing the right bentonite for your facility. Our specialists have extensive experience in working with bentonite, not only in Russia, but also abroad.

Bentonite buy in Moscow

Now you can buy bentonite in Moscow from the Albrecht company from the best bentonite manufacturer - the Albrecht MV bentonite plant, by placing an order on the website or by phone through managers. The manufacturer of Albrecht bentonite guarantees a high quality product, backed by years of testing and successful punctures. The production of bentonite is a high-tech process, which results in a high-quality product that meets all standards, which is why our company chose the plant in Krasnodar as a supplier of bentonite. The price per ton of bentonite differs depending on the brand, quality and volume of delivery. Therefore, today bentonite manufacturers are trying in every possible way to reduce the cost of bentonite, worsening its quality. Beware of fakes! Many companies are engaged in the sale of low-quality bentonite under well-known world brands. Only Albrecht's company has all the official documents and rights to sell bentonite in Albrecht MV Russia! Our company sells bentonite not only in Moscow, but throughout Russia.

Plant for the production of bentonite

The plant for the production of bentonite is located in Krasnodar. Previously, this plant has already produced a drilling fluid of a grade close to PBMA (which did not contain or contained a minimum amount of polymers). However, now it is a completely different product. The product was developed by the best specialists in drilling fluids, chemists and engineers. Several clay deposits were considered, production and testing were established. At the moment, we have received several high quality products produced in Russia at a plant in Krasnodar. You can buy bentonite directly at the factory through ALBREKHTA LLC, which is the owner of this brand.

Comparison of bentonites HDD

ALBRECHTA bentonite has been presented at various exhibitions and seminars since 2016. I would like to list the most significant points:

Exhibition No Dig 2018 before the exhibition, bentonite was slightly modified for more difficult soils, especially black clay, recommendations were calculated for the use of additional polymers for difficult soils. As a result, a more perfect bentonite showed even higher performance than at the last exhibition. The exhibition also featured a report entitled "Modern Polymer-Bentonite for HDD" by V.V. Elizarov, a leading engineer for drilling fluids. Demonstration of the characteristics in the video below.

The next success of Albrecht Drilling Fluids is the successful performance at the IAS HDD 2019 training seminar in Kazan. At this Seminar, a "Battle of drilling fluids" was held, in other words, a comparison of drilling fluids of 3 manufacturers was carried out. The results of this event once again showed that Albrecht-MV bentonite is not only a competitive product, but also one of the best on the market today. Below is the full video from the Battle of Drilling Fluids:

For more information about the Seminar and the battle of solutions, follow the link -

At the same time, the manufacture and testing of a new drilling fluid Bentonite Albrecht-LV was actively carried out. Sales of which started in June 2019. The product is a lighter version of the Albrecht-MV for finer drilling fluid control. Concrete is great for big (maxi) drilling. It has excellent takeaway, SNS, etc.

Drilling fluid preparation

The preparation of bentonite is a special process that requires the experience and skills of the NSU operator. However, ALBREKHTA LLC has simplified this process as much as possible by creating its own MV and LV betonite. Each of the bags has recommendations on the use of bentonite, in 70% of cases the success of the puncture is guaranteed by these recommendations, in some cases we recommend that you contact us for additional advice. A telephone consultation is often enough to advise on the successful preparation of the desired drilling fluid. Additionally, I would like to draw attention to the process of water treatment. After all, water for preparing the solution is taken from different objects in terms of parameters (properties). For the success of the puncture and effective use bentonite solution, the rules of water treatment should be observed. To begin with, you should analyze the water for two main factors: Acidity and Electrical Conductivity. For this, a PH-meter and a Conductometer are used. And after receiving the results of water analysis - to make a decision on water treatment. Our engineers regularly provide assistance and online advice to customers who purchase our products.

Bentonite for HDD is a powdery clay substance that swells when mixed with water and forms a dense waterproof shell. It is this feature that is in demand and is widely used in numerous construction technologies. In addition to horizontal directional drilling, bentonite solutions are used in the construction of underground structures, such as tunnels.

Bentonites are potassium, sodium and calcium, it all depends on the natural composition and the predominance of minerals. Calcium and sodium bentonites are used for horizontal directional drilling technology. The qualitative composition of bentonite determines its technical and operational characteristics; accordingly, different bentonite mixtures are selected for different soil options.

Before starting work, it is necessary to combine the soil and drilling fluid in a separate container for the sample.

Popular bentonite mixes

Typically, horizontal directional drilling bentonite is sold in the form of ready-made mixtures consisting of polymers and clay powder. On the market building materials in a wide range ready-made bentonite scenarios for any type of ground rocks are presented. These can be bentonites, both for light sandy soils and up to massive rocky ones.

Domestic and foreign manufacturers offer the following types drilling compositions:

  1. Ultra-Gel - suitable for the preparation of drilling slurry based on fresh water. The drilling fluid is used for laying pipelines, and a significant reduction in friction in a horizontal well can be considered a particular advantage.
  2. Super Gel is a fresh water based drilling fluid widely used in all kinds of drilling operations.
  3. Hydraul EZ is used in both standard and difficult conditions drilling. The drilling fluid is made on the basis of fresh water and is used for HDD equipment. Hydraul EZ helps to significantly reduce the friction force when pulling pipes, as well as installing pipelines.
  4. Premium Gel is made on the basis of a specialized polymer dry additive and bentonite. This solution has increased productivity. Ideal for wellbore stabilization various ways drilling. It is suitable for all drilling methods and various types soil.

Price range

Buy bentonite for HDD possible in large construction stores, as well as order on the Internet sites of various companies. Bentonite is sold in paper or plastic packages, as well as in pallets. The package contains from 20 to 25 kg, the pallet, in turn, consists of 40 bags. Both wholesale and retail are possible.

For example, a 22-kilogram bag of GNB-30 sodium bentonite will cost 1,400 rubles; if purchased at retail, the price will drop to 1,200 rubles. One ton of Bentolux Horizont TN PREMIUM bentonite clay powder in 25-kilogram packages will cost you 33,100 rubles. bentonite price for hb depends on the brand, quantity and component of the drilling fluid.

The hardware knowledge base is presented in detail. For successful and quality work it does not hurt to familiarize yourself with the regulatory documentation, more details in this article.

Consumption of bentonite

An important point when choosing a drilling fluid is the consumption of bentonite during HDD. Manufacturers took this fact into account and launched the production of ready-made bentonite mixtures consisting of natural bentonite with 2% sand content. These are bentonite solutions GNB-1 and GNB-2 for horizontal directional drilling rigs. These solutions form a stable mixture with good viscosity and water-retaining properties, with a consumption of 50 to 60 kg per cubic meter water.

But the rapid development of the horizontal directional drilling method requires a much lower consumption of the drilling slurry. Similar bentonite scenarios include bentonite mixtures containing in large numbers polymer and other additives that largely improve the properties of the suspension. Serial production of the latest series of bentopolymer mixtures - GNB-30 has already been mastered, the consumption of which is 30 kg per m3 of water.

Natural sodium bentonite from the Dash-Salakhlinskoye deposit is actively used to install water barriers. It is used both in pure form and mixed with sand or soil. Consumption of bentonite during horizontal directional drilling is determined by the primary water permeability of the soil and ranges from 5 to 50 kg/m2.

Bentonite is a special compound that has become an integral part of the horizontal directional drilling process. Thanks to bentonite mixtures, drilling of wells and laying of pipelines is facilitated, friction is reduced, and, accordingly, the service life of the equipment is increased. And innovative engineering developments have reduced the consumption of the solution.

Bentonite clay, more commonly referred to as "bentonite" in everyday life, is a special type of clay that contains more than 70 percent of the mineral belonging to the montmorillonite group. Montmorillonite, in turn, is included in the group of highly dispersed layered aluminosilicates, the level of which determines the most valuable property of bentonite clay - its high hydrophilicity, which determines the variety of areas of application of the material.

When water gets between the layers of montmorillonite, the mineral begins to absorb moisture and swell. Further addition of water leads to the formation of a viscous suspension, which is a clay solution. This composition, along with the inherent cation-exchange and adsorption properties of montmorillonite, also acquires pronounced thixotropic properties (the ability of a substance to reduce viscosity (thinn) from mechanical action and increase viscosity (thicken) at rest). It is these qualities of bentonite powder that allowed it to be successfully used as a filtration reducer and a visco-gelling agent for drilling fluids used to prepare drilling fluids when drilling wells and crossings.

When drilling wells for water with collapsible drilling rigs, bentonite of the PBMA brand is used. Bentonite is used for hydro-drilling in loose and floating rocks. Strengthens the walls of the well. Prevents shedding and washing of rocks on the tool. For 1 m3 of water, 50 kg of bentonite is required. The solution must be thoroughly mixed and kept for 20-30 minutes. 300 liters of solution is enough to strengthen a 100m well.

Technical characteristics of "Bentonite" for vertical drilling:

Horizontal Directional Drilling (HDD)

Trenchless laying of communications is an integral part of construction work in urban areas. Horizontal directional drilling (HDD), which is one of the most common types of trenchless laying of communications, allows you to quickly carry out engineering communications without time and quality losses. HDD is widely used in the construction of large-scale trunk lines, where horizontal drilling effectively overcomes natural obstacles such as rivers, ravines, lakes when laying all types of pressure networks, cable cases, etc. With the introduction of HDD in construction, the laying of utilities becomes more efficient and technological .

GNB-30

"Bentonite GNB-30" is intended for the preparation of water-based drilling fluids with a low solids content (high tipsotropic and lubricating properties are imparted to the solution) during the construction of crossings by horizontal directional drilling and provides at low consumption:

  • good cuttings removal
  • high lubricating properties
  • wellbore stability

When drilling horizontal microtunnels, the time spent on preparing, chemically treating drilling fluids and flushing the hole is one fifth of the time of all auxiliary work. The use of "Bentonite GNB-30" provides a significant reduction in these costs. And when laying communications using the HDD method, this makes it possible to overcome the problems associated with the characteristics of the soil (coarse-grained sand, sticky clay, scree and landslides, mud absorption in loosely bound sands and permafrost zones, cavern formation, thawing), as well as with the features of the driving method itself.

"Bentonite GNB-30" is made from bentonite raw materials with low sand content - no more than 1%. It contains the optimal amount of polymer, which makes it possible to prepare drilling fluids at a bentonite consumption from 25 kg/m3 to 45 kg/m3, depending on the type of rock to be drilled and the hardness of the mixing water. The recommended consumption of "GNB-30 bentonite" when drilling in clayey soils is 20–30 kg, when drilling in loamy soils 25–35 kg/m3, in sandy soils 40–45 kg/m3.

In terms of technological properties, "GNB-30" is an analogue of imported bentonite. The properties of drilling fluid based on bentonite grade "GNB-30" are well regulated by polymers and reagents commonly used in horizontal directional drilling technology.