Tag Archives: Directional Drilling

Ameridrill Takes a Look at a Few Really Deep Drills

For over 15 years, Ameridrill has been a local industry leader in horizontal, vertical, and geothermal drilling. In fact, Ameridrill has become known as one of the most experienced and versatile drilling companies in NJ. The highly trained staff and cutting edge equipment at Ameridrill allow them to take on some major projects. Whether it is a geo-probe at 200 feet below surface or pipe ramming for a major industrial project, Ameridrill can do it all. That being said, from time to time, the folks at Ameridrill like to take a monet and admire the engineering and drilling feats that take place around the world.

At Ameridrill, hollow stem augering and core drilling abilities are second to none. In fact, Ameridrill has the capability of drilling to 600 feet and deeper. Impressive, yes, but there have been drilling ventures around the world that make 600 feet sound shallow. For the longest time, the drilled hole that toppled all drilling projects was known as the Kola Superdeep Borehole. As the name would indicate, this hole is extremely deep. The Kola Superdeep Borehole was started as a result of a Russian scientific drilling project in 1970. The deepest point of the Kola Superdeep Borehole reached an astounding 40,230 feet.

Prior to the Kola Superdeep Borehole, the deepest drilled point was the Bertha Rogers hole in Oklahoma. In recent years, there have been holes drilled to depths of 40,318 feet and 40,502 feet. However, both of those holes were primarily horizontal drilling projects and the Kola Superdeep Borehole still remains the deepest vertical hole inside of the earth. Ameridrill is one of the leading drilling companies in New Jersey, Pennsylvania, New York, Delaware, and Maryland. Unless the task is to drill deeper than the Kola Superdeep Borehole, Ameridrill can handle almost every drilling project.

 

Auger Boring

Auger boring is used as a safe method for installing pipes and cable ducts in soft stable ground conditions such as clay and soils with contained cobbles while supporting the ground. It is a popular option used for installing utilities under railroads, highways, and levies, because the process retains the soils within the casing reducing the chances of obtaining ground settlement from excavation.

The auger boring process involves the use of an auger boring machine to rotate an auger chain or a flight positioned within a casing pipe that is fitted to a cutter head at the front of the casing. The rotating cutter head, is somewhat larger in diameter compared to the casing pipe, which digs the soil in front of the casing. The soil obtained is then transported back to the machine through the helical auger chain where it is removed by hand or by machine.

The auger boring machine progresses along a track, that is lined up to drive the casing pipe on the designed installation line. Once the auger machine reaches the end of the track arrangement, the auger chain is disconnected from the machine and the machine is moved back to the original starting point on the track where a new casing segment is welded to the existing casing pipe, and a new auger chain connected to the machine and to the existing chain/cutter head.

The excavation process is repeated until the intended project is completed. Once completed the auger chain is withdrawn from the casing pipe and cleaned of all the remaining soil so it is ready to use for the next project.

There are several advantages to using the auger boring process. For example,

-The auger machine can operate from a shaft as small as 2.40mØ

-The process uses a dry method of installation that does not generate slurry

-The procedure does not disrupt the surface, buildings, road, river, rail or traffic

-Boring underground allows for the working area to be confined to points of entry and exit only

-It is not disrupted by surface obstacles

-Can be used to install pipes in changeable ground conditions

-The process is quick and has lower overall costs

 

Pennsylvanians May Benefit From Drilling and the Marcellus Shale

 The United States economy has been suffering for several years and the unemployment rate has remained alarmingly high. However, Pennsylvania has consistently had a higher unemployment rate than the national average and job creation in Pennsylvania has been at a minimum. Thankfully, the unemployment rate in Pennsylvania has been decreasing and as of March was at 7.9 percent. The national unemployment average in March was at 7.6 percent; therefore Pennsylvanians continue to have fewer jobs than the rest of the country. Pennsylvania, especially the western part of the state, has historically thrived in the industrial production of steel and coal. Now, Pennsylvania may be able to benefit from a new resource, natural gas.

Natural gas has been increasing in popularity over the last several decades. The United States has seen a sharp increase in both supply and demand for natural gas. Particularly, shale gas has represented a rapidly increasing source of natural energy. A combination of improved horizontal drilling capabilities and discovery of new sources of shale gas, has led to the creation of thousands of new jobs. Pennsylvania may benefit more than any other state from shale gas and job production. The Marcellus Shale is a 600 mile area that is largely full of shale gas. The Marcellus Shale, including Pennsylvania, actually spans across seven different states.

Many large corporations have already begun to invest billions of dollars into drilling the Marcellus Shale. Royal Dutch Shell has invested close to $5 billion. In 2011, Chevron invested $3.8 billion into the Marcellus Shale by purchasing over 600,000 acres. The overall production of shale gas has increased by close to 70% in 2012 and gas exploration jobs have actually increased by upwards of 80%.

What is a Geoprobe?

The Geoprobe is a hydraulically  powered direct push soil probing machine that utilizes static force and  percussion to drive steel boring rods into the sub-surface. There are several  types of Geoprobes of different dimensions that can be used to probe beneath  the soil. Geoprobes are useful for working in areas not easily accessible by  other drill rigs. By attaching and or assembling a variety of sampling tools to  the steel bore rods, the Geoprobe can be used to collect soil, soil-gas, and  groundwater samples.

The steel bore rods can also be  equipped with a variety of electronic probes that provide continuous in-situ  measurements of subsurface properties such as geotechnical characteristics and  contaminant distribution. The direct push technology is a useful tool for  environmental investigations and has several other advantages compared to other  conventional drilling machines in the market. Some of the other advantages of  using a Geoprobe are:

-Obtaining accurate soil samples in undisturbed soil cores allows  for a better vertical profiling ability for generating three-dimensional
profiles of a site.

-Gaining  an accurate groundwater profiling  by direct push drilling allows for gathering of in depth-discrete groundwater  samples to detect contaminated layers.

-Obtaining  a quality sample of the soil. Meaning the soil samples retrieved in plastic liners are not exposed to the atmosphere prior to
being sent to the laboratory for testing.

-No water or drilling muds are introduced during direct push boring, maintaining cleanliness throughout the process. -A faster
rate of work is completed at a reasonable time. Direct  push boring can provide data at a faster rate than conventional drilling when a
greater data density is required.

-Dual-tube sampling produces a significantly smaller volume of drill spoil requiring safe disposal of the material obtained. However,
additional  project costs may take place.

-Increased  mobility and accessibility to  confined areas.

 

The Chemistry Of Geothermal Drilling

During exploration chemistry is used to predict underground temperature and the origin of water. The chemistry of geothermal water plays an important role in geothermal exploration, drilling and monitoring of resources. It also defines the environmental effect of disposal of the water, and is the key to distinguishing and solving problems occurring during utilization.

During the exploration phase geochemistry is used to evaluate the origin of the water, to estimate underground temperature, characterize the reservoir chemistry in respect to use, map the extent of the geothermal system, establish changes in total well discharge composition, provide chemical data for construction design, and identify scaling and corrosion problems. The process of exploring, developing, and utilization of resources can by divided into three main phases, including surface exploration, exploratory and production drilling and utilization.

The water chemistry is relevant for all the phases and the geochemist participates in all the phases involved in research and utilization. The geochemist together with other geothermal specialists always revise the previous data when new data is collected. The geochemical methods used for interpreting the water chemistry through all the phases are the same. This information is essential for evaluation of reservoir simulation models.

A geochemical study of geothermal fluids data involves three main steps. They include the collection of samples, chemical analyses, and interpretation of the data. Collection of samples requires a decent understanding of chemical analysis and interpretation, including an understanding of measurements on-site and proper treatment of the sample. During storage the analysis in the laboratory, no matter how well the analysis is done it will not give correct information on the chemical composition of the water at the sampling site if collection and sample treatment is not inadequate. In addition, interpretation of the analytical data suffers if the collection of sample or analysis is unsatisfactory.