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DIRECTED HORIZONTAL DRILLING

adminQuimacer — Wed, 14 Dec 2022 14:55:12 +0000

During horizontal directional drilling, the survey team found itself drilling loosely consolidated granular layers interspersed with highly plastic and expansive clays. He contacted Quimacer to offer them a solution that would allow them to drill the ground horizontally.

Initially, they used a bentonite mud to stabilize the borehole walls due to its binding effect.

When using this type of mud, they faced two problems:

èAbove the water table:

Collapse of the walls. The clays were not consolidated and collapsed easily. The bentonite sludge was loaded with solids.

è Under the water table:

They had high granular (sand and gravel) and clay levels. Granular levels crumbled. The mud became loaded with solids and the pumps could not move the fluid from drilling.

Team’s proposal from QUIMACER: using our polymer QUIMAGEL AS-575

It is a PHPA type polymer, whose main mission in this case is to encapsulate clays and form cake.

Due to the molecular structure of the polymer, it stuck to the walls forming a cake, which guaranteed the stability of the probe, making a succesful drilling.

By encapsulating the clays, they were prevented fro hydrating us, thus allowing the detritus to come out more easily, also leaving the borehole clean.

The problem of clay expansivity was eliminated and the collapse of the material was also avoided, with the consequent loading of solid in th fluid.

The entry DIRECTED HORIZONTAL DRILLING was first published in QUIMACER SL.

FLUID LOSS

adminQuimacer — Wed, 14 Dec 2022 13:22:11 +0000

During a drilling with core recovery at a depth of 320m with circulation Conversely, the probing team realized that a loss of fluid was taking place.

They were drilling consolidated ground with rocks and fissures.

Solution proposed by the QUIMACER team: use QUIMASEAL FIBRAS as an additive capable of sealing cracks.

The sealing action of the QUIMASEAL is due to a granulometric and morphological control of its components, allowing the sealing of small perforation cavities.

They are fibers of natural origin (nut shell type, wood,…) that are mixed with the polymeric mud and introduced through the cracks, covering them.

There is no dose of the product. A mixture of polymeric mud with 10% fibers was prepared in a separate bucket and introduced into the borehole.

The entry FLUID LOSS was first published in QUIMACER SL.

WHY SHOULD WE USE ADDITIVES WITH DRILLING FLUIDS?

adminQuimacer — Wed, 14 Dec 2022 11:50:46 +0000

Our goal is to improve drilling performance

Drilling tasks are more demanding every day. To face these tasks, the drilling machinery as well as the processes are increasingly efficient.

In order to complete the survey successfully and with the highest profitability, it is essential to use ADDITIVES for the formulation of specific muds.

In drilling and drilling terms, a drilling mud consists of a wide variety of mixtures of fluids, liquids, solids or gases used in drilling or drilling operations on land.

There is a wide variety of drilling fluids, which are divided into 1) oil-based, 2) water-based or 3) gas-based (pneumatic) fluids.

The main functions performed by mud during drilling are the following:

· To facilitate the drilling of granular levels due to its “lubricant” effect.

· To favor the cooling of the drill bit or drilling crown.

· To facilitate the extraction of detritus from inside the borehole, favoring the cleaning of the bottom of the well.

· To provide stability of the drilling walls, provides the necessary cohesion to bind unconsolidated sand and gravel, and thus allow them to be drilled while maintaining the stability of the drilling.

· To avoid siphoning (soil instability) when drilling confined low-pressure groundwater tables.

· To avoid damage to productive areas and minimize lost circulation.

· To protect the drill pipe against corrosion as none of our drilling fluids are corrosive.

· To respect the enviroment. Once the work is finished, the elimination and management of the sludge is simple and economical, since many processes are based on chemical degradation with sodium hypochlorite. Additionally, some of our drilling fluids are biodegradable.

Since drilling mud is an important component in the drilling process, it is important to control its physical and chemical properties so that the fluid provides efficient work during the drilling phase.

At QUIMACER we offer our collaborators technical advice and high-quality additives for the formulation of high-performance sludge. Thus, we intend to guarantee a successful drilling.

The entry WHY SHOULD WE USE ADDITIVES WITH DRILLING FLUIDS? was first published in QUIMACER SL.

EXCAVATION SCREEN WALL WITH ADJOINING PILES

adminQuimacer — Mon, 22 Jun 2020 14:54:39 +0000

During the construction of a screen wall with adjoining piles, sticky, expansive clays limited the speed of execution and compromised the stability of the drilling walls.

Solution proposed by the QUIMACER team: use QUIMAFLUX ST

0.8% of QUIMAFLUX ST was incorporated into the drilling fluid. It was increased by 16% in the speed of execution per pile keeping the walls of the pile stable.

QUIMAFLUX ST is a polymer of organic origin, which due to its high deflocculant power is used in aqueous solution to fluidize clays of high plasticity / or expansive, guaranteeing a higher performance of the drilling equipment and allowing greater maneuverability.

The entry EXCAVATION SCREEN WALL WITH ADJOINING PILES was first published in QUIMACER SL.